/* ==========================================================================
   个人数字收藏馆 · 独立杂志排印设计系统 (styles.css)
   设计方向：Editorial × Private Archive × Digital Library
   特征：克制、雅致、排印驱动、无过度阴影、双色主题平滑渐变、高级微动效
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计令牌 (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* 基础排印字体栈 */
  --font-serif: "Songti SC", "Source Han Serif SC", "Noto Serif SC", "STSong", "SimSun", Georgia, "Baskerville", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "Roboto Mono", Menlo, Monaco, Consolas, monospace;

  /* 尺度与圆角（克制的小圆角与锐利网格） */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-full: 9999px;

  /* 动效节奏 */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.24s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.32s cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* 浅色主题令牌 (暖象牙白纸张与墨黑印染) */
  --bg-page: #F6F4EE;
  --bg-surface: #FCFBF8;
  --bg-subtle: #EFECE3;
  --bg-hover: #E8E5DC;
  
  --text-main: #24251F;
  --text-muted: #66685F;
  --text-faint: #989A90;
  
  --color-accent: #3F523E;         /* 沉静橄榄墨绿 */
  --color-accent-soft: #EBF0E9;
  --color-accent-hover: #2E3E2D;
  --color-bookmark: #B8621B;       /* 典藏书签赭石金 */
  --color-bookmark-soft: #FBF3EB;

  --border-hairline: rgba(42, 36, 30, 0.13);      /* 极细纸张纤维分隔线 */
  --border-card: #E5E1D6;
  --border-focus: #3F523E;
  --accent-brass: #8C5A32;
  --accent-stamp: #A64030;

  --shadow-subtle: 0 1px 2px rgba(36, 37, 31, 0.03);
  --shadow-lift: 0 10px 24px -4px rgba(36, 37, 31, 0.08), 0 2px 6px -1px rgba(36, 37, 31, 0.04);
  --shadow-glow: 0 0 0 3px rgba(63, 82, 62, 0.12), 0 4px 16px rgba(36, 37, 31, 0.05);

  /* 观象台昼夜视觉令牌：白昼日晷，夜观星台 */
  --observatory-grid: rgba(84, 77, 59, 0.045);
  --observatory-shadow: rgba(84, 77, 59, 0.055);
  --observatory-shadow-soft: rgba(84, 77, 59, 0.028);
  --observatory-accent-line: rgba(75, 91, 68, 0.20);
  --observatory-starlight: rgba(177, 142, 82, 0.34);
  --card-paper-edge: rgba(255, 255, 255, 0.86);
  --card-inner-light: rgba(255, 255, 255, 0.5);
  --bg-card: #FCFBF8;
  --border-subtle: #E8E4D9;
  --border-medium: #D8D3C5;
  --shadow-modal: 0 28px 64px -24px rgba(36, 37, 31, 0.28);

  /* 日晷版式：纸面测绘线、墨色刻度与投影 */
  --layout-rule: rgba(84, 77, 59, 0.15);
  --layout-rule-strong: rgba(84, 77, 59, 0.32);
  --layout-glow: rgba(63, 82, 62, 0.08);
  --card-index-ink: #9C6A2E;
}

/* 深色主题令牌 (观星台：深空蓝黑、冷银星图与香槟微光) */
[data-theme="dark"] {
  --bg-page: #0E1520;
  --bg-surface: #131C2A;
  --bg-subtle: #1A2433;
  --bg-hover: #202C3D;
  --bg-card: #131C2A;
  --border-subtle: #263244;
  --border-medium: #303D4F;
  --shadow-modal: 0 28px 72px -20px rgba(0, 0, 0, 0.82);
  
  --text-main: #F1EEE6;
  --text-muted: #B7BDC8;
  --text-faint: #929DAF;
  
  --color-accent: #A9BBB2;         /* 星光下的鼠尾草灰绿 */
  --color-accent-soft: #1B2930;
  --color-accent-hover: #C0D0C7;
  --color-bookmark: #D8AD6A;
  --color-bookmark-soft: #2A241C;

  --border-hairline: rgba(200, 169, 126, 0.16);
  --border-card: #303D4F;
  --border-focus: #A9BBB2;
  --accent-brass: #C8A97E;
  --accent-stamp: #A64030;

  --shadow-subtle: 0 1px 2px rgba(0, 0, 0, 0.32);
  --shadow-lift: 0 14px 32px -5px rgba(0, 0, 0, 0.62), 0 3px 10px -1px rgba(0, 0, 0, 0.36);
  --shadow-glow: 0 0 0 3px rgba(169, 187, 178, 0.2), 0 4px 22px rgba(0, 0, 0, 0.5);

  --observatory-grid: rgba(168, 191, 225, 0.05);
  --observatory-shadow: rgba(0, 0, 0, 0.26);
  --observatory-shadow-soft: rgba(0, 0, 0, 0.14);
  --observatory-accent-line: rgba(201, 220, 241, 0.17);
  --observatory-starlight: rgba(244, 224, 184, 0.9);
  --card-paper-edge: rgba(195, 213, 234, 0.10);
  --card-inner-light: rgba(190, 214, 242, 0.055);

  /* 观星台版式：观测坐标、星座线与黄道刻度 */
  --layout-rule: rgba(201, 220, 241, 0.16);
  --layout-rule-strong: rgba(201, 220, 241, 0.34);
  --layout-glow: rgba(169, 187, 178, 0.14);
  --card-index-ink: #D8AD6A;
}

/* 可选尼尔工程纸张底色方案 (NieR Automata Paper Base #CFCAB5 - 仅浅色生效) */
[data-nier-bg="true"][data-theme="light"],
[data-nier-bg="true"]:not([data-theme="dark"]) {
  --bg-page: #CFCAB5;
  --bg-surface: #DDD8C4;
  --bg-subtle: #C3BDA9;
  --bg-hover: #CBC5B1;

  --text-main: #24221E;        /* 对比度 9.5:1, 远超 WCAG AA 4.5:1 */
  --text-muted: #534F47;       /* 对比度 5.1:1, 超越 WCAG AA */
  --text-faint: #787469;

  --color-accent: #374433;      /* 沉静橄榄青墨 */
  --color-accent-soft: #C5BFAC;
  --color-accent-hover: #263023;
  --color-bookmark: #AC5814;
  --color-bookmark-soft: #D7D1BD;

  --border-hairline: #B5B09B;
  --border-card: #BAB49F;
  --border-focus: #374433;
  --accent-brass: #74471F;
  --accent-stamp: #943829;

  --shadow-subtle: 0 1px 2px rgba(36, 34, 30, 0.05);
  --shadow-lift: 0 10px 24px -4px rgba(36, 34, 30, 0.12), 0 2px 6px -1px rgba(36, 34, 30, 0.05);
  --shadow-glow: 0 0 0 3px rgba(55, 68, 51, 0.15), 0 4px 16px rgba(36, 34, 30, 0.08);

  --observatory-grid: rgba(66, 59, 44, 0.06);
  --observatory-shadow: rgba(66, 59, 44, 0.08);
  --observatory-shadow-soft: rgba(66, 59, 44, 0.04);
  --observatory-accent-line: rgba(55, 68, 51, 0.24);
  --card-paper-edge: rgba(255, 253, 245, 0.58);
  --card-inner-light: rgba(255, 253, 245, 0.35);
  --bg-card: #DDD8C4;
  --border-subtle: #C1BBA7;
  --border-medium: #B5AF9A;
  --shadow-modal: 0 28px 64px -24px rgba(36, 34, 30, 0.32);
  --layout-rule: rgba(66, 59, 44, 0.17);
  --layout-rule-strong: rgba(66, 59, 44, 0.34);
  --layout-glow: rgba(55, 68, 51, 0.1);
  --card-index-ink: #8A531F;
}

/* Phase 2 state tokens: shadow moon and focus lock. */
[data-sanctum="shadow"] {
  --bg-page: #07060E;
  --bg-surface: #100D19;
  --bg-subtle: #16111F;
  --bg-hover: #21182A;
  --text-main: #EEE8E4;
  --text-muted: #B9B0B8;
  --text-faint: #8D818D;
  --border-hairline: rgba(184, 164, 185, 0.18);
  --border-card: #30263B;
  --border-focus: #9E3B42;
  --accent-brass: #C7B7C7;
  --accent-stamp: #9E3B42;
  --color-accent: #B9C6D2;
  --color-accent-hover: #D4DDE5;
  --observatory-grid: rgba(174, 188, 213, 0.055);
  --layout-rule: rgba(190, 177, 199, 0.17);
  --layout-rule-strong: rgba(190, 177, 199, 0.34);
}

[data-sanctum="shadow"] body {
  background-color: #07060E;
  background-image:
    radial-gradient(circle at 18% 8%, rgba(126, 70, 110, 0.16), transparent 34%),
    radial-gradient(circle at 82% 34%, rgba(158, 59, 66, 0.08), transparent 28%),
    linear-gradient(120deg, transparent 0 49.7%, rgba(190, 177, 199, 0.045) 49.7% 49.85%, transparent 49.85%);
}

html[data-sanctum="shadow"],
html[data-sanctum="shadow"] body {
  background-color: #07060E;
}

html[data-sanctum="shadow"] body {
  background-image:
    radial-gradient(circle at 18% 8%, rgba(126, 70, 110, 0.16), transparent 34%),
    radial-gradient(circle at 82% 34%, rgba(158, 59, 66, 0.08), transparent 28%),
    linear-gradient(120deg, transparent 0 49.7%, rgba(190, 177, 199, 0.045) 49.7% 49.85%, transparent 49.85%);
}

[data-sanctum="shadow"] .top-colophon-bar,
[data-sanctum="shadow"] .folio-search-bar,
[data-sanctum="shadow"] .category-index-nav {
  background-color: #07060E;
}

[data-sanctum="shadow"] .search-box-frame,
[data-sanctum="shadow"] .search-engine-picker,
[data-sanctum="shadow"] .search-engine-picker.is-external {
  background-color: transparent;
  background-image: none;
  border-color: var(--border-hairline);
}

[data-sanctum="shadow"] .archive-search-input,
[data-sanctum="shadow"] .search-engine-select {
  color: var(--text-main);
}

[data-sanctum="shadow"] .archive-search-input::placeholder {
  color: var(--text-faint);
}

[data-focus-lock="true"] .entry-card.card--sealed {
  cursor: not-allowed;
}

[data-focus-lock="true"] .entry-card.card--sealed .card-title-link::after {
  z-index: 7;
  cursor: not-allowed;
}

[data-focus-lock="true"] .entry-card.card--sealed .card-seal-mark {
  z-index: 9;
}

.card-seal-mark {
  position: absolute;
  inset: 50% auto auto 50%;
  z-index: 8;
  min-width: 72%;
  padding: 10px 12px;
  transform: translate(-50%, -50%) rotate(-2deg);
  border: 2px solid color-mix(in srgb, var(--accent-stamp) 76%, transparent);
  background: color-mix(in srgb, var(--bg-surface) 85%, transparent);
  color: var(--accent-stamp);
  font-family: var(--font-serif);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-align: center;
  pointer-events: auto;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--bg-surface) 60%, transparent);
  cursor: pointer;
}

.focus-timer {
  position: sticky;
  bottom: 8px;
  z-index: 12;
  margin: 8px 0 4px;
  padding: 10px 12px;
  border: 1px dashed var(--border-hairline);
  background: color-mix(in srgb, var(--bg-page) 94%, transparent);
  box-shadow: 0 -10px 22px -18px var(--text-main);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3px 8px;
  align-items: center;
}

.focus-timer[hidden] {
  display: none;
}

.focus-timer-kicker {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.12em;
  color: var(--text-faint);
}

.focus-timer strong {
  grid-row: span 2;
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
}

.focus-timer button {
  justify-self: start;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.625rem;
  text-decoration: underline;
  cursor: pointer;
}

/* A3 marginalia card reverse. The front stays a normal stretched-link card;
   the panel is only revealed by an explicit bookplate/Alt action. */
.card-marginalia {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px 18px 14px;
  overflow: auto;
  background: var(--bg-surface);
  background-image:
    linear-gradient(180deg, color-mix(in srgb, var(--bg-subtle) 58%, transparent), transparent 54%),
    repeating-linear-gradient(0deg, transparent 0 23px, var(--border-hairline) 23px 24px);
  border: 1px solid var(--accent-brass);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--bg-surface) 72%, transparent);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px) scale(0.985);
  transform-origin: center bottom;
  transition: opacity 0.2s ease, transform 0.24s var(--transition-normal), visibility 0.2s;
  pointer-events: none;
}

.entry-card.is-flipped .card-marginalia {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.entry-card.is-flipped {
  z-index: 12;
  border-color: var(--accent-brass);
  box-shadow: var(--shadow-lift);
}

.marginalia-head,
.marginalia-title-row,
.marginalia-stamp {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.marginalia-kicker {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.12em;
}

.marginalia-close,
.marginalia-edit,
.marginalia-add-sublink {
  border: 0;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-mono);
}

.marginalia-close {
  width: 24px;
  height: 24px;
  font-size: 0.75rem;
}

.marginalia-title-row h3 {
  overflow: hidden;
  font-family: var(--font-serif);
  font-size: 1rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.marginalia-title-row > span {
  flex-shrink: 0;
  color: var(--card-index-ink);
  font-family: var(--font-mono);
  font-size: 0.625rem;
}

.marginalia-section-label {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 5px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.08em;
}

.marginalia-edit {
  padding: 0;
  font-size: 0.6875rem;
}

.marginalia-note-text {
  min-height: 2.5em;
  color: var(--text-main);
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  font-style: italic;
  line-height: 1.6;
  white-space: pre-wrap;
}

.marginalia-placeholder {
  color: var(--text-faint);
  font-style: italic;
}

.marginalia-note-editor textarea {
  width: 100%;
  min-height: 58px;
  resize: vertical;
  padding: 7px 8px;
  border: 1px solid var(--border-hairline);
  background: var(--bg-page);
  color: var(--text-main);
  font: 0.75rem/1.55 var(--font-serif);
}

.marginalia-editor-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 5px;
}

.marginalia-editor-actions button {
  padding: 3px 8px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-size: 0.625rem;
  cursor: pointer;
}

.marginalia-editor-actions button:last-child {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

.marginalia-sublinks {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.marginalia-sublink {
  max-width: 100%;
  overflow: hidden;
  padding: 3px 7px;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
}

.marginalia-sublink:hover {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

.marginalia-add-sublink {
  margin-top: 6px;
  padding: 0;
  font-size: 0.5625rem;
}

.marginalia-stamp {
  margin-top: auto;
  padding-top: 7px;
  border-top: 1px dashed var(--border-hairline);
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
}

.card-shadow-mark {
  position: absolute;
  top: 12px;
  right: 50px;
  z-index: 4;
  color: #A96A93;
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.06em;
}

[data-sanctum="shadow"] .card--shadow {
  border-color: rgba(169, 106, 147, 0.62);
  box-shadow: 0 0 26px -12px rgba(158, 59, 66, 0.5);
}

.constellation-rail {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 7px 0 4px;
  border-bottom: 1px solid var(--border-hairline);
}

.constellation-chip {
  padding: 3px 9px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.constellation-chip:hover {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

[data-sanctum="shadow"] .folio-shell {
  transform: rotate(-0.18deg);
  transition: transform 0.8s var(--transition-smooth);
}

/* A 0.18deg tilt on a full-bleed sheet widens its bounding box by ~8px and
   creates horizontal overflow at exactly 1440. Contain the tilt instead of
   letting it push the document. */
@media (min-width: 901px) {
  .archive-wrapper:has(.folio-shell) {
    overflow-x: clip;
  }
}

[data-sanctum="shadow"] .folio-main::before {
  transform: rotate(180deg) scale(1.08);
  transition: transform 0.9s var(--transition-smooth);
}

[data-sanctum="shadow"] .folio-main::after {
  transform: rotate(-180deg) scale(1.08);
  transition: transform 0.9s var(--transition-smooth);
}

.entry-card.constellation-highlight {
  border-color: var(--accent-brass) !important;
  box-shadow: 0 0 0 1px var(--accent-brass), 0 0 26px -8px color-mix(in srgb, var(--accent-brass) 58%, transparent) !important;
}

/* Top toolbar additions need to stay compact on small screens. */
.snippets-switch-btn,
.shadow-switch-btn,
.focus-switch-btn {
  gap: 4px;
}

[data-sanctum="shadow"] .shadow-switch-btn,
[data-focus-lock="true"] .focus-switch-btn {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

/* The top toolbar gains three Phase 2 controls. On narrow screens the labels
   collapse instead of forcing a second row or horizontal scroll. */
@media (max-width: 520px) {
  .snippets-switch-btn .snippets-label,
  .shadow-switch-btn .shadow-label,
  .focus-switch-btn .focus-label {
    display: none;
  }
}

@media (max-width: 900px) {
  .focus-timer {
    margin: 8px 0 0;
  }

  .constellation-rail {
    padding-top: 5px;
  }
}

/* --------------------------------------------------------------------------
   Phase 2 · 待编目匣 / 暗星带
   -------------------------------------------------------------------------- */
.uncatalogued-backdrop {
  position: fixed;
  inset: 0;
  z-index: 260;
  background: rgba(9, 8, 12, 0.54);
  backdrop-filter: blur(2px);
}

.uncatalogued-backdrop[hidden],
.uncatalogued-drawer[hidden] {
  display: none;
}

.uncatalogued-drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 270;
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: min(420px, 100vw);
  height: 100dvh;
  padding: 22px 22px max(18px, env(safe-area-inset-bottom));
  overflow: hidden;
  background: color-mix(in srgb, var(--bg-page) 96%, transparent);
  border-left: 1px solid var(--accent-brass);
  box-shadow: -24px 0 60px -28px rgba(0, 0, 0, 0.5);
  animation: uncataloguedSlideIn 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes uncataloguedSlideIn {
  from {
    opacity: 0;
    transform: translateX(32px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.uncatalogued-drawer-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-hairline);
}

.uncatalogued-kicker {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.12em;
}

.uncatalogued-drawer-header h2 {
  margin-top: 5px;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 600;
}

.uncatalogued-drawer-header h2 span {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 400;
}

.uncatalogued-close,
.snippets-close {
  width: 30px;
  height: 30px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
}

.uncatalogued-form {
  display: grid;
  gap: 7px;
  padding: 12px;
  border: 1px dashed var(--border-hairline);
  background: color-mix(in srgb, var(--bg-subtle) 42%, transparent);
}

.uncatalogued-form label {
  display: grid;
  gap: 3px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.06em;
}

.uncatalogued-form label em {
  color: var(--accent-stamp);
  font-style: italic;
}

.uncatalogued-form input,
.uncatalogued-form textarea,
.uncatalogued-form select {
  width: 100%;
  border: 1px solid var(--border-card);
  background: var(--bg-surface);
  color: var(--text-main);
  padding: 6px 7px;
  font: 0.75rem/1.45 var(--font-sans);
}

.uncatalogued-form textarea {
  resize: vertical;
}

.uncatalogued-form input:focus,
.uncatalogued-form textarea:focus,
.uncatalogued-form select:focus {
  outline: 0;
  border-color: var(--accent-brass);
}

.uncatalogued-submit {
  justify-self: start;
  margin-top: 2px;
  padding: 5px 10px;
  border: 1px solid var(--accent-brass);
  background: transparent;
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 0.6875rem;
  cursor: pointer;
}

.uncatalogued-list {
  display: grid;
  gap: 9px;
  overflow-y: auto;
  padding: 2px 2px 8px;
}

.uncatalogued-card {
  position: relative;
  padding: 11px 12px 12px;
  border: 1px dashed var(--border-hairline);
  background: color-mix(in srgb, var(--bg-surface) 72%, transparent);
}

.uncatalogued-card-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.uncatalogued-tmp {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.08em;
}

.uncatalogued-status-stamp {
  padding: 1px 5px;
  border: 1px solid color-mix(in srgb, var(--accent-stamp) 48%, transparent);
  color: color-mix(in srgb, var(--accent-stamp) 74%, var(--text-main));
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.05em;
}

.uncatalogued-hourglass {
  margin-left: auto;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
}

.uncatalogued-card-title {
  margin-top: 8px;
  font-family: var(--font-serif);
  font-size: 0.95rem;
}

.uncatalogued-card-title a {
  color: var(--text-main);
  text-decoration: none;
}

.uncatalogued-card-title a:hover {
  color: var(--accent-brass);
}

.uncatalogued-card-meta {
  margin-top: 2px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
}

.uncatalogued-why {
  margin: 9px 0;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.75rem;
  font-style: italic;
  line-height: 1.55;
}

.uncatalogued-why span {
  display: block;
  margin-bottom: 2px;
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  font-style: normal;
  letter-spacing: 0.08em;
}

.uncatalogued-card-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.uncatalogued-card-actions button {
  padding: 2px 0;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  cursor: pointer;
}

.uncatalogued-card-actions .uncatalogued-crown {
  color: var(--accent-brass);
}

.uncatalogued-card-actions button:hover {
  color: var(--accent-stamp);
}

.uncatalogued-empty {
  padding: 46px 16px;
  border: 1px dashed var(--border-hairline);
  text-align: center;
}

.uncatalogued-empty span {
  display: block;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 1.7rem;
}

.uncatalogued-empty p {
  margin-top: 9px;
  color: var(--text-muted);
  font-family: var(--font-serif);
}

.uncatalogued-empty small {
  display: block;
  margin-top: 5px;
  color: var(--text-faint);
  font-size: 0.625rem;
}

.uncatalogued-potential {
  margin-top: 22px;
  border-top: 1px dashed var(--border-hairline);
  padding-top: 14px;
}

.uncatalogued-potential > header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.06em;
}

.uncatalogued-potential-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 7px;
}

.potential-card {
  position: relative;
  display: grid;
  gap: 3px;
  padding: 9px 10px;
  border: 1px dashed var(--border-hairline);
  background: transparent;
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
}

.potential-card:hover {
  border-color: var(--accent-brass);
  background: color-mix(in srgb, var(--bg-subtle) 38%, transparent);
}

.potential-tmp {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
}

.potential-card strong {
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  font-weight: 600;
}

.potential-card small {
  overflow: hidden;
  color: var(--text-faint);
  font-size: 0.625rem;
  line-height: 1.4;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.potential-arrow {
  position: absolute;
  top: 8px;
  right: 9px;
  color: var(--accent-brass);
  font-family: var(--font-mono);
}

body.drawer-open {
  overflow: hidden;
}

@media (max-width: 640px) {
  .uncatalogued-drawer {
    width: 100vw;
    padding: 16px 14px max(14px, env(safe-area-inset-bottom));
  }
}

/* --------------------------------------------------------------------------
   Phase 2 · C1 活字秘卷匣
   -------------------------------------------------------------------------- */
.snippets-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 280;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(8, 7, 11, 0.58);
  backdrop-filter: blur(3px);
}

.snippets-modal-card {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(680px, 100%);
  max-height: min(82dvh, 720px);
  overflow: hidden;
  border: 1px solid var(--border-card);
  background: var(--bg-surface);
  box-shadow: var(--shadow-modal);
  animation: modalScaleUp 0.24s cubic-bezier(0.16, 1, 0.3, 1);
}

.snippets-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px 13px;
  border-bottom: 1px solid var(--border-hairline);
}

.snippets-kicker {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.12em;
}

.snippets-modal-header h2 {
  margin-top: 5px;
  font-family: var(--font-serif);
  font-size: 1.35rem;
}

.snippets-modal-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 20px;
  border-bottom: 1px dashed var(--border-hairline);
  color: var(--text-faint);
  font-size: 0.6875rem;
}

.snippets-modal-toolbar button,
.snippet-copy,
.snippet-actions button {
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.5625rem;
}

.snippets-modal-toolbar button {
  padding: 3px 8px;
  color: var(--accent-brass);
}

.snippets-list {
  display: grid;
  gap: 8px;
  padding: 14px 20px 18px;
  overflow-y: auto;
}

.snippet-card {
  padding: 10px 12px;
  border: 1px solid var(--border-hairline);
  background: color-mix(in srgb, var(--bg-subtle) 38%, transparent);
}

.snippet-card header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.snippet-card h3 {
  font-family: var(--font-serif);
  font-size: 0.875rem;
}

.snippet-actions {
  display: flex;
  gap: 3px;
}

.snippet-actions button {
  width: 22px;
  height: 22px;
  padding: 0;
}

.snippet-preview {
  display: -webkit-box;
  overflow: hidden;
  margin: 7px 0;
  color: var(--text-muted);
  font: 0.75rem/1.55 var(--font-mono);
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.snippet-copy {
  padding: 3px 8px;
  color: var(--accent-brass);
}

.snippets-copy-menu {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 10px 20px 14px;
  border-top: 1px dashed var(--border-hairline);
  background: color-mix(in srgb, var(--bg-subtle) 46%, transparent);
}

.snippets-copy-menu[hidden] {
  display: none;
}

.snippets-copy-label {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
}

.snippet-ai-link {
  padding: 3px 7px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  cursor: pointer;
}

.snippet-ai-link:hover {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

@media (max-width: 520px) {
  .snippets-modal-backdrop {
    align-items: flex-end;
    padding: 8px;
  }

  .snippets-modal-card {
    max-height: 90dvh;
  }

  .snippets-modal-header,
  .snippets-modal-toolbar,
  .snippets-list,
  .snippets-copy-menu {
    padding-left: 14px;
    padding-right: 14px;
  }
}

/* --------------------------------------------------------------------------
   2. 基础重置、主题渐变与排印排版 (Base & Typography)
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 68px;
  text-rendering: optimizeLegibility;
}

/* 昼夜模式平滑色彩渐变适配 */
body,
.archive-wrapper,
.top-colophon-bar,
.category-index-nav,
.entry-card,
.search-box-frame,
.index-tab-item,
.quiet-empty-state,
.colophon-footer,
.card-emblem,
.tab-badge-num {
  transition: background-color var(--transition-smooth),
              border-color var(--transition-smooth),
              color var(--transition-smooth),
              box-shadow var(--transition-smooth);
}

/* 页面主体与自然阅读室光照氛围 (Reading Room Daylight Vignette) */
body {
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  position: relative;
  /* 暖象牙白微光漫反射晕影 */
  background-image:
    radial-gradient(ellipse 90% 55% at 50% 0%, rgba(255, 253, 246, 0.8) 0%, rgba(246, 244, 238, 0) 70%),
    radial-gradient(ellipse 100% 100% at 50% 50%, transparent 60%, rgba(216, 211, 198, 0.22) 100%);
  background-attachment: fixed;
}

/* 日晷：象牙纸上极淡的晷针投影与经纬测绘线 */
[data-theme="light"] body {
  background-image:
    linear-gradient(var(--sundial-angle, 118deg), transparent 0 47.85%, var(--observatory-shadow) 47.85% 47.98%, transparent 47.98%),
    linear-gradient(var(--sundial-angle, 118deg), transparent 0 53.8%, var(--observatory-shadow-soft) 53.8% 53.9%, transparent 53.9%),
    linear-gradient(90deg, var(--observatory-grid) 1px, transparent 1px),
    linear-gradient(0deg, var(--observatory-grid) 1px, transparent 1px),
    radial-gradient(ellipse 90% 55% at 50% 0%, rgba(255, 253, 246, 0.8) 0%, rgba(246, 244, 238, 0) 70%),
    radial-gradient(ellipse 100% 100% at 50% 50%, transparent 60%, rgba(216, 211, 198, 0.22) 100%);
  background-size:
    auto,
    auto,
    80px 80px,
    80px 80px,
    auto,
    auto;
  background-attachment: fixed;
}

/* 观星台：深空底、极淡黄道圈与细碎星尘 */
[data-theme="dark"] body {
  background-color: var(--bg-page);
  background-image:
    radial-gradient(circle at 14% 9%, var(--observatory-starlight) 0 1px, transparent 1.8px),
    radial-gradient(circle at 79% 16%, rgba(209, 228, 255, 0.72) 0 1px, transparent 2px),
    radial-gradient(circle at 63% 41%, rgba(244, 224, 184, 0.64) 0 0.9px, transparent 1.7px),
    radial-gradient(circle at 31% 72%, rgba(209, 228, 255, 0.68) 0 1px, transparent 1.9px),
    radial-gradient(ellipse 48% 45% at 82% 74%, transparent 48%, var(--observatory-accent-line) 48.2% 48.45%, transparent 48.65%),
    radial-gradient(ellipse 48% 45% at 82% 74%, transparent 54.5%, rgba(183, 204, 229, 0.08) 54.7% 54.82%, transparent 55%),
    radial-gradient(ellipse 85% 55% at 50% 0%, rgba(106, 146, 186, 0.11) 0%, transparent 65%),
    radial-gradient(ellipse 100% 100% at 50% 50%, transparent 48%, rgba(3, 8, 16, 0.5) 100%);
  background-size:
    auto,
    auto,
    auto,
    auto,
    auto,
    auto,
    auto,
    auto;
  background-position:
    0 0,
    0 0,
    0 0,
    0 0,
    right 8% top 24%,
    right 8% top 24%,
    0 0,
    0 0;
  background-attachment: fixed;
}

/* 纸张纤维噪点底纹 (Archival Paper Fiber Texture Grain - 纯内联 SVG，零外部网络请求) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 10;
  opacity: 0.038;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='paperNoise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23paperNoise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 160px 160px;
}

/* 深色模式下呈现古籍炭黑桑皮纸手工肌理 */
[data-theme="dark"] body::before {
  opacity: 0.052;
  filter: contrast(125%) brightness(85%);
}

/* 深色模式的观星台星图刻线：星座折线、黄道刻度与几颗克制亮星 */
[data-theme="dark"] .archive-wrapper::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.62;
  background-image:
    linear-gradient(32deg, transparent 0 49.82%, var(--observatory-accent-line) 49.82% 49.94%, transparent 49.94%),
    linear-gradient(147deg, transparent 0 49.84%, rgba(183, 204, 229, 0.1) 49.84% 49.95%, transparent 49.95%),
    radial-gradient(circle at 18% 24%, rgba(255, 244, 214, 0.9) 0 1.25px, rgba(255, 244, 214, 0.14) 1.5px 4px, transparent 5px),
    radial-gradient(circle at 72% 12%, rgba(218, 235, 255, 0.85) 0 1px, rgba(218, 235, 255, 0.11) 1.25px 3px, transparent 4px),
    radial-gradient(circle at 85% 38%, rgba(255, 233, 196, 0.8) 0 1px, transparent 2px),
    radial-gradient(circle at 42% 53%, rgba(218, 235, 255, 0.7) 0 0.9px, transparent 1.8px),
    radial-gradient(circle at 24% 82%, rgba(255, 244, 214, 0.72) 0 1px, transparent 2px),
    radial-gradient(circle at 91% 78%, rgba(218, 235, 255, 0.68) 0 0.9px, transparent 1.7px);
  background-size:
    420px 320px,
    420px 320px,
    auto,
    auto,
    auto,
    auto,
    auto,
    auto;
  background-position:
    0 0,
    0 0,
    0 0,
    0 0,
    0 0,
    0 0,
    0 0,
    0 0;
}

/* 浅色模式的日晷底纹：不压文字，只在留白处露出极细的晷针投影 */
[data-theme="light"] .archive-wrapper::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.9;
  background-image:
    linear-gradient(var(--sundial-angle, 118deg), transparent 0 49.92%, var(--observatory-shadow) 49.92% 50.02%, transparent 50.02%),
    linear-gradient(var(--sundial-angle, 118deg), transparent 0 62.1%, var(--observatory-shadow-soft) 62.1% 62.2%, transparent 62.2%);
  background-size: 100% 100%, 100% 100%;
}

/* 焦点无障碍支持 */
:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   2.1 尼尔机械纪元方块蛛网背景容器 (NieR Square Particles Web Canvas)
   -------------------------------------------------------------------------- */
#particles-bg {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

#particles-bg canvas {
  display: block;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

html {
  overflow-x: clip;
}

/* 容器布局 (内容置于粒子层之上) */
.archive-wrapper {
  max-width: 1240px;
  width: 100%;
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  flex-direction: column;
  flex: 1;
  position: relative;
  z-index: 1;
}

/* 观象台的时代标记：VOL. 前的圆点，夜间像一颗低悬的星 */
[data-theme="dark"] .issue-dot {
  background-color: var(--observatory-starlight);
  box-shadow: 0 0 8px rgba(244, 224, 184, 0.38);
}

/* 刊头右侧的星晷环：只在留白处出现，不参与排版、不承接点击 */
.editorial-masthead {
  position: relative;
  overflow: visible;
}

.editorial-masthead::after {
  content: "";
  position: absolute;
  top: 54px;
  right: -18px;
  width: 208px;
  height: 208px;
  border: 1px solid var(--observatory-accent-line);
  border-radius: 50%;
  pointer-events: none;
  opacity: 0.72;
  background:
    linear-gradient(90deg, transparent calc(50% - 0.5px), var(--observatory-accent-line) calc(50% - 0.5px) calc(50% + 0.5px), transparent calc(50% + 0.5px)),
    linear-gradient(0deg, transparent calc(50% - 0.5px), var(--observatory-accent-line) calc(50% - 0.5px) calc(50% + 0.5px), transparent calc(50% + 0.5px)),
    radial-gradient(circle, transparent 0 21px, var(--observatory-accent-line) 21px 21.8px, transparent 22px);
  transform: rotate(-12deg);
}

.editorial-masthead::before {
  content: "";
  position: absolute;
  top: 54px;
  right: -18px;
  width: 208px;
  height: 208px;
  border-radius: 50%;
  pointer-events: none;
  opacity: 0.8;
  background:
    linear-gradient(29deg, transparent 0 49.78%, var(--observatory-shadow) 49.78% 49.9%, transparent 49.9%),
    conic-gradient(from 205deg, transparent 0 5deg, var(--observatory-accent-line) 5deg 5.6deg, transparent 5.6deg 17deg, var(--observatory-accent-line) 17deg 17.6deg, transparent 17.6deg 29deg, var(--observatory-accent-line) 29deg 29.6deg, transparent 29.6deg);
  -webkit-mask-image: radial-gradient(circle, transparent 0 78px, #000 78px 79px, transparent 79px);
  mask-image: radial-gradient(circle, transparent 0 78px, #000 78px 79px, transparent 79px);
}

/* 浅色下星晷环像淡墨印痕，深色下只留极轻的星尘辉光 */
[data-theme="light"] .editorial-masthead::after {
  opacity: 0.28;
}

[data-theme="light"] .editorial-masthead::before {
  opacity: 0.26;
}

[data-theme="dark"] .editorial-masthead::after {
  box-shadow: 0 0 34px rgba(183, 204, 229, 0.06), inset 0 0 24px rgba(183, 204, 229, 0.025);
}

[data-theme="dark"] .editorial-masthead::before {
  opacity: 0.7;
}

/* --------------------------------------------------------------------------
   3. 顶部细导航条 (Colophon Bar)
   -------------------------------------------------------------------------- */
.top-colophon-bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 14px 0;
  border-top: 1px solid var(--layout-rule);
  border-bottom: 1px solid var(--border-hairline);
  margin-bottom: 3px;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.top-colophon-bar::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 106px;
  height: 1px;
  background: var(--layout-rule-strong);
  opacity: 0.75;
}

.colophon-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.colophon-mark {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.18em;
}

.colophon-divider {
  color: var(--border-hairline);
}

.colophon-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 主题切换开关 */
.theme-switch-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--border-hairline);
  padding: 5px 10px;
  border-radius: var(--radius-xs);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  will-change: transform;
}

.theme-switch-btn:hover {
  color: var(--text-main);
  border-color: var(--border-focus);
  background-color: color-mix(in srgb, var(--bg-subtle) 74%, transparent);
  transform: translateY(-1px);
}

.theme-switch-btn:active {
  transform: translateY(0) scale(0.97);
}

.theme-icon {
  font-size: 0.8125rem;
  transition: transform var(--transition-fast);
}

#btn-theme-toggle:hover .theme-icon {
  transform: rotate(25deg) scale(1.15);
}

/* 处于自然时序 AUTO 模式时的专属高质感指示 */
[data-theme-mode="auto"] #btn-theme-toggle {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
}

/* --------------------------------------------------------------------------
   4. 编辑式刊头 (Masthead Header)
   -------------------------------------------------------------------------- */
.editorial-masthead {
  min-height: 310px;
  padding: 66px 330px 50px 0;
  border-bottom: 1px solid var(--layout-rule-strong);
  margin-bottom: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.masthead-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  font-family: var(--font-serif);
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.masthead-issue {
  display: flex;
  align-items: center;
  gap: 8px;
}

.issue-dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  background-color: var(--color-accent);
  border-radius: 50%;
  animation: pulseGentle 3s ease-in-out infinite;
}

@keyframes pulseGentle {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.45;
    transform: scale(0.85);
  }
}

.masthead-headline {
  font-family: var(--font-serif);
  font-size: clamp(3.2rem, 5.2vw, 5.4rem);
  font-weight: 600;
  letter-spacing: -0.055em;
  color: var(--text-main);
  line-height: 0.96;
  margin-bottom: 18px;
  text-wrap: balance;
}

.masthead-epigraph {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  color: var(--text-muted);
  font-style: italic;
  max-width: 610px;
  line-height: 1.75;
}

.masthead-epigraph::before {
  content: "——";
  margin-right: 8px;
  color: var(--observatory-accent-line);
  font-style: normal;
}

/* 深色下用细银线代替纯黑粗线，像夜空中的子午线 */
[data-theme="dark"] .editorial-masthead {
  border-bottom-color: var(--layout-rule-strong);
}

/* --------------------------------------------------------------------------
   5. 核心搜索区域 (Search Indexing)
   -------------------------------------------------------------------------- */
.archive-search-section {
  position: relative;
  z-index: 2;
  margin: -27px 0 16px;
  padding: 0 76px;
}

.search-box-frame {
  position: relative;
  display: flex;
  align-items: center;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
  min-height: 54px;
  padding: 11px 16px;
  box-shadow: 0 8px 24px -18px var(--layout-rule-strong);
  transition: border-color var(--transition-fast), box-shadow var(--transition-normal);
}

.search-box-frame::before,
.search-box-frame::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 34px;
  height: 1px;
  background: var(--layout-rule);
  pointer-events: none;
}

.search-box-frame::before {
  right: calc(100% + 12px);
}

.search-box-frame::after {
  left: calc(100% + 12px);
}

/* 检索框是一张摊开在观象台上的星图/日影纸 */
[data-theme="dark"] .search-box-frame {
  background-image: linear-gradient(180deg, rgba(190, 214, 242, 0.035), transparent 64%);
  box-shadow: inset 0 1px 0 rgba(201, 220, 241, 0.06), var(--shadow-subtle);
}

[data-theme="light"] .search-box-frame {
  box-shadow: inset 0 1px 0 var(--card-inner-light), 0 1px 2px rgba(36, 37, 31, 0.035);
}

/* 搜索框聚焦低饱和柔光外轮廓 */
.search-box-frame:focus-within {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-glow);
}

.search-glyph {
  font-size: 0.875rem;
  color: var(--text-faint);
  margin-right: 12px;
  user-select: none;
  transition: color var(--transition-fast);
}

.search-box-frame:focus-within .search-glyph {
  color: var(--color-accent);
}

/* 搜索引擎选择下拉 (Search Engine Picker) */
.search-engine-picker {
  position: relative;
  display: inline-flex;
  align-items: center;
  margin-right: 10px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
  flex-shrink: 0;
  user-select: none;
}

.search-engine-picker:hover {
  border-color: var(--border-focus);
}

.search-engine-select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background: transparent;
  border: none;
  padding: 3px 22px 3px 8px;
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  outline: none;
  line-height: 1.4;
  border-radius: var(--radius-xs);
  transition: color var(--transition-fast);
}

.search-engine-select option {
  background-color: var(--bg-surface);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
}

.search-engine-picker .engine-caret {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.625rem;
  color: var(--text-faint);
  pointer-events: none;
  line-height: 1;
  transition: color var(--transition-fast);
}

.search-engine-picker:hover .engine-caret {
  color: var(--text-main);
}

/* 选中外部搜索引擎时，微高亮 */
.search-engine-picker.is-external {
  border-color: var(--color-accent);
  background-color: var(--color-accent-soft);
}

.search-engine-picker.is-external .search-engine-select {
  color: var(--color-accent);
}

.search-engine-picker.is-external .engine-caret {
  color: var(--color-accent);
}

.search-engine-picker:focus-within {
  border-color: var(--border-focus);
}

.archive-search-input {
  flex: 1;
  background: transparent;
  border: none;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--text-main);
  outline: none;
}

.archive-search-input::placeholder {
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-style: italic;
}

.search-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 12px;
}

.btn-clear-search {
  background: none;
  border: none;
  font-size: 0.875rem;
  color: var(--text-faint);
  cursor: pointer;
  padding: 2px 6px;
  line-height: 1;
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
}

.btn-clear-search:hover {
  color: var(--text-main);
  background-color: var(--bg-subtle);
}

.kbd-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  user-select: none;
}

/* --------------------------------------------------------------------------
   6. 分类与藏目导航 (Index Tabs)
   -------------------------------------------------------------------------- */
.category-index-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background-color: var(--bg-page);
  padding: 14px 0 12px;
  border-top: 1px solid var(--layout-rule);
  border-bottom: 1px solid var(--layout-rule);
  margin-bottom: 0;
}

[data-theme="dark"] .category-index-nav {
  background-color: rgba(14, 21, 32, 0.96);
  -webkit-backdrop-filter: blur(16px) saturate(120%);
  backdrop-filter: blur(16px) saturate(120%);
}

[data-theme="light"] .category-index-nav {
  background-color: rgba(246, 244, 238, 0.96);
  -webkit-backdrop-filter: blur(16px) saturate(105%);
  backdrop-filter: blur(16px) saturate(105%);
}

.index-tabs-rail {
  display: flex;
  align-items: center;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

.index-tabs-rail::-webkit-scrollbar {
  display: none;
}

.index-tab-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: transparent;
  border: 0;
  border-bottom: 1px solid transparent;
  padding: 7px 13px 8px;
  border-radius: 0;
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  transition: all var(--transition-fast);
  will-change: transform;
}

.index-tab-item:hover {
  color: var(--text-main);
  background-color: color-mix(in srgb, var(--bg-subtle) 58%, transparent);
}

.index-tab-item:active {
  transform: scale(0.97);
}

.index-tab-item.active {
  color: var(--text-main);
  background-color: transparent;
  border-bottom-color: var(--text-main);
  font-weight: 600;
  box-shadow: none;
}

.tab-badge-num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-faint);
  background-color: var(--bg-subtle);
  padding: 1px 5px;
  border-radius: var(--radius-xs);
  transition: color var(--transition-fast);
}

.index-tab-item.active .tab-badge-num {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   7. 搜索状态提示 (Status Banner)
   -------------------------------------------------------------------------- */
.search-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 16px;
  background-color: transparent;
  border-left: 0;
  border-top: 1px solid var(--layout-rule);
  border-right: 0;
  border-bottom: 1px solid var(--layout-rule);
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0 0 8px;
  border-radius: 0;
  animation: barSlideIn 0.28s var(--transition-normal);
}

@keyframes barSlideIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.search-status-bar strong {
  color: var(--text-main);
}

.search-status-content {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

/* 检索分类分布小胶囊 (Category Distribution Pills) */
.search-dist-pills {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-left: 6px;
}

.search-cat-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background-color: transparent;
  border: 1px solid var(--layout-rule);
  padding: 2px 8px;
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.search-cat-pill:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: transparent;
}

.search-cat-pill .pill-count {
  font-weight: 700;
  color: var(--color-accent);
}

/* 出版物划线批注高亮 (Editorial Mark Highlighting) */
.editorial-highlight {
  background-color: rgba(229, 169, 98, 0.28);
  color: inherit;
  padding: 0 2px;
  border-radius: var(--radius-xs);
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  text-decoration: underline;
  text-decoration-color: rgba(184, 98, 27, 0.45);
  text-underline-offset: 2px;
}

[data-theme="dark"] .editorial-highlight {
  background-color: rgba(212, 176, 123, 0.24);
  color: inherit;
  text-decoration-color: rgba(212, 176, 123, 0.5);
}

.btn-reset-filter {
  background: none;
  border: none;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--color-accent);
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}

.btn-reset-filter:hover {
  color: var(--color-accent-hover);
}

/* --------------------------------------------------------------------------
   8. 典藏专栏板块 (Archive Sections)
   -------------------------------------------------------------------------- */
.archive-section {
  position: relative;
  margin-bottom: 0;
  padding: 48px 0 56px;
  border-bottom: 1px solid var(--layout-rule);
}

.archive-section::before {
  content: attr(data-section-category);
  position: absolute;
  top: 34px;
  right: 0;
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  opacity: 0.6;
  pointer-events: none;
}

.archive-section:last-child {
  border-bottom: 0;
}

.section-masthead-rule {
  display: flex;
  align-items: end;
  justify-content: space-between;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--layout-rule);
  margin-bottom: 26px;
  gap: 20px;
}

.section-masthead-rule {
  position: relative;
}

/* 栏目序号落在留白中，形成一个不占布局的页边注 */
.archive-section .section-masthead-rule::before {
  content: "◌";
  position: absolute;
  top: -32px;
  right: 0;
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--layout-rule-strong);
  pointer-events: none;
}

[data-theme="light"] .archive-section .section-masthead-rule::before {
  content: "☼";
  font-size: 0.85rem;
  color: var(--observatory-accent-line);
}

/* 栏目线的右端保留一枚细小的天文刻度，避免分区看起来像普通列表 */
[data-theme="dark"] .section-masthead-rule::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 96px;
  height: 5px;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, var(--observatory-accent-line) 0 1px, transparent 1px 11px);
  opacity: 0.9;
}

[data-theme="light"] .section-masthead-rule::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 96px;
  height: 3px;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, var(--observatory-accent-line) 0 1px, transparent 1px 11px);
  opacity: 0.5;
}

.section-heading-group {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.section-code {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--color-accent);
  font-weight: 700;
}

.section-title-text {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 1.8vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--text-main);
}

.section-desc-text {
  font-size: 0.8125rem;
  color: var(--text-faint);
  margin-left: 6px;
}

.section-count-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  white-space: nowrap;
}

.btn-clear-visits {
  background: none;
  border: 1px solid var(--border-hairline);
  padding: 3px 8px;
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  color: var(--text-faint);
  cursor: pointer;
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
}

.btn-clear-visits:hover {
  color: #DC2626;
  border-color: #FCA5A5;
  background-color: var(--bg-surface);
}

/* --------------------------------------------------------------------------
   9. 网站网格与书目卡片 (Editorial Grid & Cards)
   -------------------------------------------------------------------------- */
.entries-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 14px;
  align-items: stretch;
}

/* 卡片按顺序错峰渐入动画 */
@keyframes cardStaggerFadeIn {
  0% {
    opacity: 0;
    transform: translateY(10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.entry-card {
  position: relative;
  display: flex;
  flex-direction: column;
  grid-column: span 4;
  min-height: 204px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
  padding: 22px 22px 18px;
  text-decoration: none;
  color: inherit;
  box-shadow: none;
  overflow: hidden;

  /* 初始错峰进场动画 */
  animation: cardStaggerFadeIn 0.36s var(--transition-normal) both;
  animation-delay: calc(var(--stagger-idx, 0) * 32ms);

  /* 悬停微位移与平滑弥散阴影 */
  transition: transform 0.24s cubic-bezier(0.2, 0.8, 0.2, 1),
              border-color 0.2s ease,
              box-shadow 0.24s cubic-bezier(0.2, 0.8, 0.2, 1),
              background-color 0.32s ease;
  will-change: transform, box-shadow;
}

/* 十二栏书目：首件略宽，其余保持三栏，像一页有主次的馆藏目录 */
.entries-grid > .entry-card:nth-child(12n + 1) {
  grid-column: span 6;
}

.entries-grid > .entry-card:nth-child(12n + 2),
.entries-grid > .entry-card:nth-child(12n + 3) {
  grid-column: span 3;
}

.entries-grid > .entry-card:nth-child(12n + 1) .card-title-text {
  font-size: 1.25rem;
}

.entries-grid > .entry-card:nth-child(12n + 1) .card-synopsis {
  max-width: 42ch;
  font-size: 0.875rem;
}

/* 卡片材质：白昼是压在日影中的纸页，夜晚是薄薄一层星图硫酸纸 */
[data-theme="light"] .entry-card {
  background-color: var(--bg-surface);
  background-image:
    linear-gradient(180deg, var(--card-paper-edge), transparent 36%),
    linear-gradient(var(--sundial-angle, 118deg), transparent 0 72%, rgba(84, 77, 59, 0.018) 72% 72.4%, transparent 72.4%);
  box-shadow:
    var(--sundial-shadow-x, 0px) var(--sundial-shadow-y, 8px) var(--sundial-length, 18px) -12px var(--observatory-shadow),
    0 0 0 1px rgba(226, 223, 212, 0.6);
}

[data-theme="dark"] .entry-card {
  background-color: var(--bg-surface);
  background-image:
    linear-gradient(180deg, var(--card-inner-light), transparent 42%),
    radial-gradient(circle at 92% 12%, rgba(244, 224, 184, 0.09) 0 1px, transparent 2px);
}

/* 鼠标微光泽纸张质感层 */
.entry-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  background: radial-gradient(360px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255, 255, 255, 0.45), transparent 75%);
}

[data-theme="dark"] .entry-card::after {
  background: radial-gradient(360px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255, 255, 255, 0.06), transparent 75%);
}

/* 悬停卡片纸张微抬升与弥散阴影 */
.entry-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-focus);
  box-shadow: var(--shadow-lift);
  background-color: var(--bg-surface);
}

.entry-card:hover::after {
  opacity: 1;
}

/* 卡片顶部印记与书签 */
.card-masthead {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 26px;
}

.card-identity {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-width: 0;
}

.card-emblem {
  position: relative;
  width: 34px;
  height: 34px;
  border: 1px solid var(--border-hairline);
  background-color: transparent;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  user-select: none;
  overflow: hidden;
  transition: transform var(--transition-fast), background-color var(--transition-smooth), border-color var(--transition-smooth);
}

.emblem-img {
  width: 22px;
  height: 22px;
  object-fit: contain;
  display: block;
  border-radius: 50%;
}

/* 有图片时隐藏文本字母徽标 */
.emblem-img + .emblem-fallback-text {
  display: none;
}

.emblem-fallback-text {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* 深色主题下给图标底色用浅色（#F6F4EE），避免 GitHub、Vercel、Hark 等暗黑图标无法辨识 */
[data-theme="dark"] .card-emblem {
  background-color: #E9E7DF;
  border-color: rgba(201, 220, 241, 0.72);
  box-shadow: 0 0 0 3px rgba(201, 220, 241, 0.045);
}

/* 深色星图下，卡片底栏的小字也要保持可读 */
[data-theme="dark"] .card-domain-slug,
[data-theme="dark"] .card-tag-pill,
[data-theme="dark"] .btn-bookplate,
[data-theme="dark"] .card-jump-mark {
  color: #B0BAC7;
}

[data-theme="dark"] .card-tag-pill,
[data-theme="dark"] .btn-bookplate {
  background-color: transparent;
  border-color: transparent;
}

[data-theme="dark"] .btn-bookplate {
  color: #BEC8D4;
}

[data-theme="dark"] .btn-bookplate:hover {
  color: var(--color-accent-hover);
}

[data-theme="dark"] .card-jump-mark {
  color: var(--card-index-ink);
}

[data-theme="dark"] .entry-card:hover .card-tag-pill {
  color: #C7CED7;
}

[data-theme="dark"] .card-emblem .emblem-fallback-text {
  color: #24251F;
}

.entry-card:hover .card-emblem {
  transform: scale(1.04);
}

.card-titles {
  min-width: 0;
}

.card-title-text {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--transition-fast);
}

/* Stretched Link 规范：整卡可点击且标题具备完整无障碍链接 */
.card-title-link {
  color: inherit;
  text-decoration: none;
  outline: none;
}

.card-title-link::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
}

/* 每张书目卡片右上角的短横，像馆藏页角的铅字索引线 */
.entry-card::before {
  content: "";
  position: absolute;
  top: 18px;
  right: 18px;
  width: 22px;
  height: 1px;
  background: var(--layout-rule-strong);
  pointer-events: none;
  opacity: 0.7;
}

/* 第一张卡以更大的题名建立主次，但不改变信息与点击行为 */
.entries-grid > .entry-card:nth-child(12n + 1) .card-emblem {
  width: 40px;
  height: 40px;
}

.entries-grid > .entry-card:nth-child(12n + 1) .emblem-img {
  width: 26px;
  height: 26px;
}

.card-title-link:focus-visible::after {
  outline: 2px solid var(--border-focus);
  outline-offset: -2px;
}

.entry-card:hover .card-title-text {
  color: var(--color-accent);
}

.card-domain-slug {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-top: 6px;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 收藏书签微弹性动效 */
@keyframes bookmarkSpring {
  0% {
    transform: scale(1);
  }
  25% {
    transform: scale(0.8);
  }
  50% {
    transform: scale(1.24);
  }
  75% {
    transform: scale(0.95);
  }
  100% {
    transform: scale(1);
  }
}

.btn-bookmark {
  position: relative;
  z-index: 3;
  background: none;
  border: none;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-xs);
  transition: color 0.18s ease, background-color 0.18s ease, transform 0.18s ease;
  flex-shrink: 0;
  will-change: transform;
}

.btn-bookmark:hover {
  color: var(--color-bookmark);
  background-color: var(--color-bookmark-soft);
  transform: scale(1.08);
}

.btn-bookmark:active {
  transform: scale(0.85);
}

.btn-bookmark.anim-spring {
  animation: bookmarkSpring 0.42s var(--ease-spring) both;
}

.btn-bookmark.bookmarked {
  color: var(--color-bookmark);
}

.btn-bookmark svg {
  width: 15px;
  height: 15px;
  fill: currentColor;
}

/* 卡片简述摘要 */
.card-synopsis {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.72;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 22px;
  min-height: 3.3em;
}

/* 卡片底部底栏与外链微冲刺 */
.card-bottom-rail {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  border-top: 1px solid var(--layout-rule);
  font-size: 0.6875rem;
  gap: 8px;
}

.card-tag-pill {
  font-family: var(--font-mono);
  color: var(--text-faint);
  background-color: transparent;
  padding: 0;
  letter-spacing: 0.04em;
  border-radius: 0;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.entry-card:hover .card-tag-pill {
  color: var(--text-muted);
}

.card-bottom-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  z-index: 2;
}

.card-slip-marginalia-trigger {
  position: relative;
  z-index: 3;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  white-space: nowrap;
  cursor: pointer;
}

.card-slip-marginalia-trigger:hover {
  color: var(--accent-stamp);
}

/* 藏书票印记按钮 */
.btn-bookplate {
  position: relative;
  z-index: 2;
  background: none;
  border: 0;
  background-color: transparent;
  color: var(--text-faint);
  padding: 2px 0;
  font-size: 0.6875rem;
  font-family: var(--font-serif);
  letter-spacing: 0.02em;
  border-radius: 0;
  cursor: pointer;
  line-height: 1.4;
  transition: all var(--transition-fast);
}

.btn-bookplate:hover {
  color: var(--color-accent);
  border-color: transparent;
  background-color: transparent;
  transform: translateX(2px);
}

.btn-bookplate:active {
  transform: translateY(0);
}

/* 外链箭头右上微冲刺动效 */
.card-jump-mark {
  position: relative;
  z-index: 2;
  font-family: var(--font-mono);
  color: var(--card-index-ink);
  text-decoration: none;
  display: inline-block;
  transition: transform 0.22s var(--ease-spring), color 0.2s ease;
  will-change: transform;
}

.entry-card:hover .card-jump-mark {
  transform: translate(3px, -3px);
}

/* --------------------------------------------------------------------------
   10. 典雅空状态 (Quiet Empty State)
   -------------------------------------------------------------------------- */
.quiet-empty-state {
  text-align: center;
  padding: 64px 24px;
  background-color: var(--bg-surface);
  border: 1px dashed var(--border-hairline);
  border-radius: var(--radius-xs);
  margin: 20px 0;
  animation: emptyFadeIn 0.3s var(--transition-normal);
}

@keyframes emptyFadeIn {
  from {
    opacity: 0;
    transform: scale(0.98);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.empty-state-symbol {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--text-faint);
  margin-bottom: 12px;
}

.empty-state-headline {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}

.empty-state-text {
  font-size: 0.875rem;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 20px;
}

.btn-empty-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--text-main);
  color: var(--bg-page);
  border: none;
  padding: 7px 18px;
  border-radius: var(--radius-xs);
  font-size: 0.8125rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.btn-empty-action:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

.btn-empty-action:active {
  transform: translateY(0);
}

/* 图书馆式空状态精选推荐 (Curated Library Recommendations) */
.empty-recommendation-box {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-hairline);
  width: 100%;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.empty-recommendation-title {
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 16px;
  text-transform: uppercase;
  font-weight: 700;
}

.empty-recommendation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.empty-rec-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
  text-decoration: none;
  color: var(--text-main);
  transition: all var(--transition-fast);
  text-align: left;
}

.empty-rec-card:hover {
  border-color: var(--color-accent);
  background-color: var(--bg-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}

.empty-rec-icon {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.8125rem;
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xs);
  flex-shrink: 0;
}

.empty-rec-meta {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.empty-rec-name {
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.empty-rec-desc {
  font-size: 0.6875rem;
  color: var(--text-faint);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 推荐检索词/标签胶囊 */
.empty-suggest-tags {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
}

.empty-suggest-label {
  font-size: 0.75rem;
  color: var(--text-faint);
  font-family: var(--font-serif);
}

.empty-tag-pill {
  background: none;
  border: 1px dashed var(--border-hairline);
  padding: 3px 10px;
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.empty-tag-pill:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: var(--bg-subtle);
  transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   11. 刊末页脚 (Colophon Footer)
   -------------------------------------------------------------------------- */
.colophon-footer {
  margin-top: auto;
  padding: 44px 0 52px;
  border-top: 1px solid var(--layout-rule-strong);
  font-size: 0.75rem;
  color: var(--text-faint);
  line-height: 1.8;
}

.footer-inner-rail::before {
  content: "FINIS";
  order: -1;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.32em;
  color: var(--text-faint);
  margin-bottom: 4px;
}

.footer-inner-rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
}

.footer-quote {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--text-muted);
}

.footer-shortcuts-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px 12px;
  max-width: 100%;
  box-sizing: border-box;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
}

.footer-shortcuts-line > span,
.footer-shortcuts-line > button {
  min-width: 0;
  max-width: 100%;
  white-space: normal;
}

/* --------------------------------------------------------------------------
   12. 响应式适配与媒体查询 (Responsive & A11y)
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .folio-main .entries-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr)) !important;
  }

  .folio-main .entries-grid > .entry-card {
    grid-column: span 12 !important;
    width: 100%;
    min-width: 0;
  }

  .search-box-frame::before,
  .search-box-frame::after {
    display: none;
  }

  .archive-wrapper {
    padding: 0 20px;
    overflow-x: clip;
  }

  [data-theme="light"] body {
    background-size:
      auto,
      auto,
      64px 64px,
      64px 64px,
      auto,
      auto;
  }

  .editorial-masthead {
    min-height: 0;
    padding: 42px 0 30px;
  }

  .editorial-masthead::before,
  .editorial-masthead::after {
    width: 112px;
    height: 112px;
    top: 18px;
    right: -22px;
    opacity: 0.26;
  }

  .editorial-masthead::before {
    -webkit-mask-image: radial-gradient(circle, transparent 0 39px, #000 39px 40px, transparent 40px);
    mask-image: radial-gradient(circle, transparent 0 39px, #000 39px 40px, transparent 40px);
  }

  /* 顶部细栏移动端优化：防止多余文字挤压导致竖排变形 */
  .top-colophon-bar {
    min-height: 56px;
    padding: 9px 0;
    gap: 8px;
  }

  .top-colophon-bar::after {
    width: 72px;
  }

  .colophon-left {
    gap: 6px;
    min-width: 0;
    flex-shrink: 0;
  }

  .colophon-right {
    gap: 6px;
    justify-content: flex-end;
  }

  .theme-switch-btn {
    padding: 5px 8px;
    min-height: 38px;
    min-width: 38px;
    justify-content: center;
    gap: 4px;
    white-space: nowrap;
  }

  .editorial-masthead {
    padding: 34px 0 26px;
  }

  .masthead-headline {
    font-size: clamp(2.125rem, 9vw, 3rem);
    line-height: 1;
    margin-bottom: 14px;
  }

  .masthead-epigraph {
    font-size: 0.9375rem;
    line-height: 1.7;
  }

  .archive-search-section {
    margin-top: 18px;
    margin-bottom: 12px;
    padding: 0;
  }

  .masthead-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 7px;
    margin-bottom: 22px;
    font-size: 0.75rem;
  }

  .entries-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .entry-card {
    grid-column: span 1 !important;
    min-height: 0;
    padding: 18px;
  }

  .entries-grid > .entry-card:nth-child(12n + 1) {
    grid-column: span 2 !important;
  }

  .entries-grid > .entry-card:nth-child(12n + 1) .card-title-text {
    font-size: 1.125rem;
  }

  .card-masthead {
    margin-bottom: 20px;
  }

  .card-synopsis {
    margin-bottom: 18px;
  }

  /* 扩充书签收藏热区，满足 WCAG 2.5.8 44x44px 触控标准 */
  .btn-bookmark {
    width: 38px;
    height: 38px;
  }

  .btn-bookmark::before {
    content: "";
    position: absolute;
    inset: -4px;
  }

  .btn-bookmark svg {
    width: 18px;
    height: 18px;
  }

  /* 底栏操作热区提升，防止与外链及整卡跳转冲突 */
  .card-bottom-actions {
    gap: 10px;
  }

  .btn-bookplate {
    min-height: 36px;
    padding: 6px 10px;
    font-size: 0.75rem;
    display: inline-flex;
    align-items: center;
  }

  .card-jump-mark {
    min-height: 36px;
    padding: 6px 10px;
    font-size: 0.75rem;
    display: inline-flex;
    align-items: center;
  }

  .section-desc-text {
    display: none;
  }

  .archive-section {
    padding: 34px 0 42px;
  }

  .section-masthead-rule {
    margin-bottom: 16px;
    padding-bottom: 12px;
  }

  /* 搜索框移动端视口与触控优化 */
  .search-box-frame {
    padding: 8px 12px;
    min-height: 44px;
    scroll-margin-top: 16px;
  }

  .search-glyph {
    margin-right: 8px;
  }

  .search-engine-picker {
    margin-right: 6px;
  }

  .search-engine-select {
    font-size: 0.75rem;
    padding: 2px 18px 2px 6px;
  }

  .search-engine-picker .engine-caret {
    right: 4px;
    font-size: 0.5625rem;
  }

  .archive-search-input {
    min-width: 0;
    font-size: 0.875rem;
  }

  .archive-search-input::placeholder {
    font-size: 0.8125rem;
    letter-spacing: -0.01em;
  }

  .archive-search-input[placeholder^="用 Google"]::placeholder {
    font-size: 0.75rem;
  }

  .search-tools .kbd-tag {
    display: none;
  }

  .search-status-bar {
    align-items: flex-start;
    gap: 10px;
    padding: 10px 2px;
    margin-bottom: 4px;
  }

  .btn-reset-filter {
    flex-shrink: 0;
    white-space: nowrap;
    font-size: 0.75rem;
  }

  .btn-clear-search {
    min-width: 36px;
    min-height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    padding: 4px;
  }

  /* 分类导览栏移动端横向平滑滚动与窥探指示 */
  .category-index-nav {
    position: relative;
    padding: 8px 0 10px;
    margin-bottom: 0;
    overflow: hidden;
  }

  .category-index-nav::after {
    content: "";
    position: absolute;
    top: 8px;
    bottom: 10px;
    right: 0;
    width: 24px;
    background: linear-gradient(to right, transparent, var(--bg-page));
    pointer-events: none;
    z-index: 21;
  }

  .index-tabs-rail {
    gap: 8px;
    padding-right: 24px;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
    max-width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
  }

  .index-tab-item {
    min-height: 38px;
    padding: 8px 11px;
    scroll-snap-align: start;
    font-size: 0.8125rem;
  }

  .archive-section::before {
    top: 30px;
    font-size: 0.5rem;
  }

  .footer-shortcuts-line {
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 12px;
    max-width: 100%;
    box-sizing: border-box;
    font-size: 0.625rem;
    line-height: 1.6;
  }
}

/* 窄屏手机专属精炼断点 (<= 540px) */
@media (max-width: 540px) {
  .entries-grid {
    grid-template-columns: 1fr;
  }

  .entry-card,
  .entries-grid > .entry-card:nth-child(12n + 1) {
    grid-column: 1 / -1 !important;
  }

  .colophon-divider,
  .colophon-sub-title {
    display: none;
  }
}

/* 顶栏收缩为主题图标 (<= 440px)；页尾馆务索引仍保留文字。 */
@media (max-width: 440px) {
  .top-colophon-bar .theme-switch-btn .theme-label {
    display: none;
  }

  .top-colophon-bar .theme-switch-btn {
    padding: 6px 8px;
  }

  .top-colophon-bar .theme-switch-btn .theme-icon {
    font-size: 1rem;
    margin: 0;
  }
}

/* 极窄屏把版记与工具条分成两行，保证五个入口都完整可点 */
@media (max-width: 370px) {
  .top-colophon-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 0 10px;
  }

  .colophon-left {
    width: 100%;
  }

  .colophon-right {
    width: 100%;
    justify-content: space-between;
    gap: 4px;
    margin-top: 9px;
    padding-top: 9px;
    border-top: 1px solid var(--layout-rule);
  }
}

/* 移动端长按上下文菜单与模态弹窗窄屏适配 (<= 640px) */
@media (max-width: 640px) {
  .nav-context-menu {
    position: fixed !important;
    left: 12px !important;
    right: 12px !important;
    bottom: 12px !important;
    top: auto !important;
    width: auto !important;
    min-width: 0 !important;
    max-height: 75vh;
    overflow-y: auto;
    border-radius: var(--radius-sm);
    padding: 8px 0 max(8px, env(safe-area-inset-bottom));
    box-shadow: var(--shadow-lift);
    transform: none !important;
    animation: ctxSlideUp 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  }

  @keyframes ctxSlideUp {
    from {
      transform: translateY(100%);
      opacity: 0;
    }
    to {
      transform: translateY(0);
      opacity: 1;
    }
  }

  .ctx-item {
    padding: 12px 18px;
    font-size: 0.9375rem;
    min-height: 44px;
  }

  .ctx-icon {
    font-size: 1.1rem;
    width: 24px;
  }

  .ctx-submenu {
    position: static !important;
    display: none;
    box-shadow: none !important;
    border: none !important;
    border-left: 2px solid var(--color-accent) !important;
    margin: 4px 0 4px 20px !important;
    background-color: var(--bg-subtle) !important;
  }

  .has-submenu.is-expanded .ctx-submenu {
    display: block;
  }

  .bookplate-modal-card,
  .shortcuts-modal-card,
  .colophon-modal-card,
  .editorial-modal-window {
    max-height: 88vh;
    padding: 18px 16px;
    margin: auto 8px;
    border-radius: var(--radius-sm);
  }

  .bookplate-modal-footer,
  .shortcuts-modal-footer,
  .colophon-modal-footer {
    padding-bottom: max(12px, env(safe-area-inset-bottom));
  }
}


/* --------------------------------------------------------------------------
   13. 书架整理与拖动排序专属设计 (Arrange Shelf & Drag-and-Drop)
   -------------------------------------------------------------------------- */

/* 顶部栏整理开关激活态 */
.arrange-switch-btn.active {
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}

[data-theme="dark"] .arrange-switch-btn.active {
  background-color: var(--color-accent);
  color: #171815;
  border-color: var(--color-accent);
}

.arrange-switch-btn.active:hover {
  background-color: var(--color-accent-hover);
  color: #FFFFFF;
}

/* 整理操作横条 (Arrange Mode Toolbar) */
.arrange-toolbar {
  margin-bottom: 24px;
  background-color: var(--bg-surface);
  border: 1px dashed var(--color-accent);
  border-radius: var(--radius-xs);
  padding: 12px 18px;
  animation: barSlideIn 0.25s var(--transition-normal);
}

.arrange-toolbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.arrange-tip {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.arrange-badge {
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.arrange-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-arrange-action {
  background: var(--bg-page);
  border: 1px solid var(--border-hairline);
  padding: 5px 12px;
  border-radius: var(--radius-xs);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-main);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-arrange-action:hover {
  background-color: var(--bg-subtle);
  border-color: var(--border-focus);
}

.btn-arrange-action.btn-arrange-primary {
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
  font-weight: 600;
}

[data-theme="dark"] .btn-arrange-action.btn-arrange-primary {
  color: #171815;
}

.btn-arrange-action.btn-arrange-primary:hover {
  background-color: var(--color-accent-hover);
}

/* 整理模式卡片外观与轻微抖动动效 */
@keyframes cardJiggle {
  0% {
    transform: rotate(-0.35deg) translateY(0);
  }
  100% {
    transform: rotate(0.35deg) translateY(-1px);
  }
}

.arrange-mode .entry-card {
  cursor: grab;
  cursor: -webkit-grab;
  border: 1px dashed var(--color-accent);
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
  -webkit-touch-callout: none;
  -webkit-user-drag: none;
  animation: cardJiggle 0.3s ease-in-out infinite alternate !important;
}

.arrange-mode .entry-card:nth-child(even) {
  animation-direction: alternate-reverse !important;
  animation-duration: 0.34s !important;
}

/* 整理模式下彻底关闭悬停光泽、全卡点击链接覆盖层与悬停位移 */
.arrange-mode .entry-card::after,
.arrange-mode .card-title-link::after {
  display: none !important;
  opacity: 0 !important;
}

.arrange-mode .entry-card:hover {
  transform: none !important;
  box-shadow: var(--shadow-subtle) !important;
  border-color: var(--color-accent) !important;
}

.arrange-mode .entry-card:hover .card-jump-mark,
.arrange-mode .entry-card:hover .btn-bookplate,
.arrange-mode .entry-card:hover .card-emblem {
  transform: none !important;
}

.arrange-mode .btn-bookplate,
.arrange-mode .card-jump-mark {
  pointer-events: none;
  opacity: 0.45;
}

/* 拖拽中的卡片：跟手、纸质微放大、浓重弥散阴影 */
.entry-card.is-dragging {
  cursor: grabbing !important;
  cursor: -webkit-grabbing !important;
  animation: none !important;
  transform: scale(1.03) !important;
  box-shadow: 0 16px 36px -4px rgba(36, 37, 31, 0.2), 0 6px 14px -2px rgba(36, 37, 31, 0.12) !important;
  border-color: var(--color-accent) !important;
  opacity: 0.96;
  z-index: 9999 !important;
}

[data-theme="dark"] .entry-card.is-dragging {
  box-shadow: 0 18px 40px -4px rgba(0, 0, 0, 0.7), 0 8px 16px -2px rgba(0, 0, 0, 0.4) !important;
}

/* 原位置纸张色占位符 */
.entry-placeholder {
  background-color: var(--bg-subtle);
  border: 2px dashed var(--color-accent);
  border-radius: var(--radius-xs);
  box-sizing: border-box;
  opacity: 0.75;
  min-height: 120px;
  transition: transform 0.22s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* 键盘操作选中的卡片高亮标识 */
.entry-card.is-keyboard-picked {
  outline: 2px solid var(--color-accent) !important;
  outline-offset: 3px !important;
  border-color: var(--color-accent) !important;
  box-shadow: var(--shadow-lift) !important;
  transform: scale(1.02) !important;
  animation: none !important;
}

/* 严格尊重减弱动效用户偏好 (Accessibility First) */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .entry-card:hover {
    transform: none !important;
  }

  .card-jump-mark,
  .btn-bookplate,
  .btn-bookmark {
    transform: none !important;
  }

  .arrange-mode .entry-card {
    animation: none !important;
  }

  .entry-placeholder,
  .entry-card {
    transition: none !important;
  }

  .issue-dot {
    animation: none !important;
  }

  .entry-card::after {
    display: none !important;
  }
}

/* ==========================================================================
   14. 数字藏书票印画模态展示层 (Ex Libris Modal)
   ========================================================================== */

/* 模态背景遮罩 */
.bookplate-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background-color: rgba(30, 31, 26, 0.68);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  box-sizing: border-box;
  animation: modalBackdropFadeIn 0.22s ease-out;
}

@keyframes modalBackdropFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* 模态卡片容器 */
.bookplate-modal-card {
  position: relative;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-sm);
  box-shadow: 0 24px 50px -12px rgba(0, 0, 0, 0.38), 0 0 0 1px var(--border-hairline);
  max-width: 440px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalScaleIn 0.26s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalScaleIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(8px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

/* 模态顶栏 */
.bookplate-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-bottom: 1px solid var(--border-hairline);
  background-color: var(--bg-subtle);
}

.bookplate-modal-titles {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.bookplate-modal-badge {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.18em;
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
}

.bookplate-modal-title {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
  line-height: 1.3;
}

.btn-close-bookplate {
  background: none;
  border: 1px solid transparent;
  color: var(--text-faint);
  width: 30px;
  height: 30px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.btn-close-bookplate:hover {
  background-color: var(--bg-surface);
  border-color: var(--border-hairline);
  color: var(--text-main);
}

/* 藏书票印画预览区域 */
.bookplate-preview-area {
  padding: 24px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-page);
  overflow-y: auto;
  min-height: 360px;
}

/* 矢量藏书票本体 */
.exlibris-svg {
  width: 100%;
  max-width: 320px;
  height: auto;
  aspect-ratio: 2 / 3;
  border-radius: 4px;
  box-shadow: 0 12px 32px -4px rgba(36, 37, 31, 0.22), 0 3px 10px -2px rgba(36, 37, 31, 0.12);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.exlibris-svg:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px -4px rgba(36, 37, 31, 0.28), 0 4px 12px -2px rgba(36, 37, 31, 0.16);
}

[data-theme="dark"] .exlibris-svg {
  box-shadow: 0 16px 44px -4px rgba(0, 0, 0, 0.65), 0 4px 14px -2px rgba(0, 0, 0, 0.4);
}

/* 模态底栏与操作按钮 */
.bookplate-modal-footer {
  padding: 12px 18px;
  border-top: 1px solid var(--border-hairline);
  background-color: var(--bg-surface);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bookplate-modal-tip {
  font-size: 0.6875rem;
  color: var(--text-faint);
  text-align: center;
  letter-spacing: 0.02em;
}

.bookplate-modal-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.btn-bookplate-action {
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  padding: 6px 14px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-hairline);
  background-color: var(--bg-surface);
  color: var(--text-main);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn-bookplate-action:hover {
  background-color: var(--bg-subtle);
  border-color: var(--border-focus);
}

.btn-bookplate-primary {
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
  font-weight: 600;
}

.btn-bookplate-primary:hover {
  opacity: 0.92;
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  box-shadow: 0 2px 8px rgba(184, 98, 27, 0.35);
}

.btn-bookplate-action:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* 弹窗打开时背景锁滚动 */
body.modal-open {
  overflow: hidden;
}

/* 移动端视口适配 */
@media (max-width: 640px) {
  .bookplate-modal-card {
    max-height: 94vh;
  }
  .bookplate-preview-area {
    padding: 16px 12px;
  }
  .exlibris-svg {
    max-width: 270px;
  }
}

/* --------------------------------------------------------------------------
   古籍对开卷 · 经纬档案台 (Editorial Folio & Vernier Archive)
   -------------------------------------------------------------------------- */
:root {
  --active-cat-index: 0;
  --header-height: 56px;
  --folio-spine-width: 290px;
}

.archive-wrapper {
  max-width: 1440px;
  min-height: 100vh;
  padding: 0;
}

.top-colophon-bar {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-height);
  min-height: var(--header-height);
  padding: 0 28px;
  margin: 0;
  border-top: 0;
  border-bottom: 1px solid var(--border-hairline);
  background: color-mix(in srgb, var(--bg-page) 92%, transparent);
  -webkit-backdrop-filter: blur(10px) saturate(112%);
  backdrop-filter: blur(10px) saturate(112%);
}

.top-colophon-bar::after {
  display: none;
}

.colophon-right {
  gap: 0;
}

.colophon-right .theme-switch-btn {
  position: relative;
  min-height: 34px;
  padding: 5px 11px;
  border: 0;
  border-radius: 0;
  background: transparent;
  font-family: var(--font-serif);
  letter-spacing: 0.08em;
}

.colophon-right .theme-switch-btn::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: 3px;
  height: 1px;
  background: var(--accent-brass);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--transition-normal);
}

.colophon-right .theme-switch-btn:hover {
  color: var(--text-main);
  border: 0;
  background: transparent;
  transform: none;
}

.colophon-right .theme-switch-btn:hover::after,
.colophon-right .theme-switch-btn:focus-visible::after {
  transform: scaleX(1);
}

.colophon-right .theme-switch-btn + .theme-switch-btn::before {
  content: "✦";
  position: absolute;
  left: -4px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--layout-rule-strong);
  font-size: 0.5rem;
  pointer-events: none;
}

[data-theme-mode="auto"] #btn-theme-toggle {
  border: 0;
  background: transparent;
  color: var(--accent-brass);
}

.folio-shell {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: var(--folio-spine-width) minmax(0, 1fr);
  width: 100%;
  max-width: 1440px;
  min-height: calc(100vh - var(--header-height));
  margin: 0 auto;
}

.folio-shell::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--folio-spine-width);
  z-index: 4;
  width: 1px;
  background: var(--border-hairline);
  pointer-events: none;
}

.folio-shell::after {
  content: "+";
  position: absolute;
  top: 18px;
  left: calc(var(--folio-spine-width) - 5px);
  z-index: 5;
  width: 11px;
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  line-height: 1;
  text-align: center;
  pointer-events: none;
}

.folio-spine {
  position: sticky;
  top: var(--header-height);
  height: calc(100vh - var(--header-height));
  min-width: 0;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-hairline) transparent;
}

.folio-spine-inner {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 30px 24px 22px;
}

.folio-spine-inner::after {
  content: "+";
  position: absolute;
  right: 23px;
  bottom: 8px;
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  opacity: 0.7;
}

.ex-libris-plate.editorial-masthead {
  position: relative;
  display: block;
  min-height: 0;
  padding: 0;
  border: 1px solid var(--border-hairline);
  margin: 0 0 30px;
}

.ex-libris-plate.editorial-masthead::before,
.ex-libris-plate.editorial-masthead::after {
  display: none;
}

.plate-frame {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 330px;
  padding: 12px;
  border: 1px solid var(--border-hairline);
  margin: 3px;
  overflow: hidden;
}

.plate-frame::before,
.plate-frame::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  pointer-events: none;
}

.plate-frame::before {
  top: 7px;
  left: 7px;
  border-top: 1px solid var(--accent-brass);
  border-left: 1px solid var(--accent-brass);
}

.plate-frame::after {
  right: 7px;
  bottom: 7px;
  border-right: 1px solid var(--accent-brass);
  border-bottom: 1px solid var(--accent-brass);
}

.ex-libris-plate .masthead-meta {
  display: block;
  margin: 2px 0 30px;
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.1em;
  line-height: 1.55;
}

.ex-libris-plate .masthead-issue {
  gap: 5px;
  align-items: flex-start;
  line-height: 1.55;
}

.plate-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  margin-top: 8px;
  color: var(--text-faint);
}

.plate-orbit {
  position: absolute;
  top: 66px;
  right: -22px;
  width: 112px;
  height: 112px;
  pointer-events: none;
  opacity: 0.72;
}

.plate-orbit-ring {
  position: absolute;
  inset: 0;
  border: 1px solid var(--border-hairline);
  border-radius: 50%;
}

.plate-orbit-ring::before,
.plate-orbit-ring::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--accent-brass);
  opacity: 0.55;
}

.plate-orbit-ring::before {
  width: 1px;
  height: 100%;
  transform: translate(-50%, -50%);
}

.plate-orbit-ring::after {
  width: 100%;
  height: 1px;
  transform: translate(-50%, -50%);
}

.plate-orbit-rule {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 54px;
  height: 1px;
  background: var(--accent-brass);
  opacity: 0.4;
  transform-origin: left center;
  transform: rotate(-34deg);
}

.ex-libris-plate .masthead-headline {
  position: relative;
  z-index: 1;
  width: min-content;
  max-width: 100%;
  margin: auto 0 16px;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.055em;
  white-space: nowrap;
}

.ex-libris-plate .masthead-epigraph {
  position: relative;
  z-index: 1;
  max-width: 210px;
  margin: 0;
  font-size: 0.75rem;
  line-height: 1.75;
}

.ex-libris-plate .masthead-epigraph::before {
  margin-right: 3px;
}

.plate-imprint {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 8px;
  border-top: 1px solid var(--border-hairline);
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.13em;
}

.spine-nav.category-index-nav {
  position: static;
  z-index: auto;
  padding: 0;
  border: 0;
  margin: 0;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.spine-nav .index-tabs-rail {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 3px;
  overflow: visible;
}

.spine-nav .index-tab-item {
  position: relative;
  display: grid;
  grid-template-columns: 30px minmax(0, auto) minmax(8px, 1fr) 22px;
  gap: 5px;
  align-items: baseline;
  width: 100%;
  min-height: 35px;
  padding: 6px 0 6px 12px;
  border: 0;
  border-bottom: 0;
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  text-align: left;
  white-space: normal;
  transition: color var(--transition-fast), padding-left var(--transition-normal), background-color var(--transition-fast);
}

.spine-nav .index-tab-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 1.5px;
  background: var(--accent-brass);
  transform: translateY(-50%);
  transition: width var(--transition-normal);
}

.spine-nav .index-tab-item:hover {
  padding-left: 18px;
  color: var(--text-main);
  background-color: color-mix(in srgb, var(--bg-subtle) 42%, transparent);
}

.spine-nav .index-tab-item.active {
  padding-left: 18px;
  color: var(--accent-brass);
  font-weight: 600;
  background: transparent;
  border: 0;
}

.spine-nav .index-tab-item.active::before {
  width: 14px;
}

.tab-coordinate {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.02em;
}

.spine-nav .index-tab-item.active .tab-coordinate {
  color: var(--accent-brass);
}

.tab-spine-line {
  align-self: end;
  margin-bottom: 0.35em;
  border-bottom: 1px dotted var(--border-hairline);
}

.spine-nav .tab-badge-num {
  justify-self: end;
  color: var(--text-faint);
  background: transparent;
  padding: 0;
  font-size: 0.625rem;
}

.spine-nav .index-tab-item.active .tab-badge-num {
  color: var(--accent-brass);
}

.spine-nav .spine-aux-item {
  grid-template-columns: 30px minmax(0, auto) 22px;
}

.spine-nav .spine-aux-item .tab-spine-line {
  display: none;
}

.spine-nav .spine-aux-item .tab-badge-num {
  grid-column: 3;
}

.spine-nav .spine-aux-item + .index-tab-item:not(.spine-aux-item) {
  margin-top: 12px;
}

.spine-nav .spine-aux-item + .index-tab-item:not(.spine-aux-item)::after {
  content: "ARCHIVE SECTIONS";
  position: absolute;
  top: -14px;
  left: 12px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.4375rem;
  letter-spacing: 0.12em;
  pointer-events: none;
}

.spine-colophon {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: auto;
  padding: 22px 0 6px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.04em;
  line-height: 1.55;
}

.spine-colophon-rule {
  width: 32px;
  height: 1px;
  margin-bottom: 3px;
  background: var(--accent-brass);
  opacity: 0.7;
}

.folio-main {
  position: relative;
  min-width: 0;
  padding: 0 32px;
  background-image:
    linear-gradient(90deg, transparent 0 calc(100% - 1px), var(--layout-rule) calc(100% - 1px)),
    linear-gradient(0deg, transparent 0 calc(100% - 1px), var(--layout-rule) calc(100% - 1px));
  background-size: 96px 96px;
  background-position: 0 0;
}

.folio-main::before {
  content: "";
  position: absolute;
  top: 56px;
  right: 36px;
  width: min(26vw, 390px);
  aspect-ratio: 1;
  border: 1px solid var(--border-hairline);
  border-radius: 50%;
  opacity: 0.38;
  pointer-events: none;
  transform: rotate(calc(var(--active-cat-index) * 18deg));
  transition: transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
  background:
    linear-gradient(28deg, transparent 49.86%, var(--border-hairline) 49.86% 50.02%, transparent 50.02%),
    linear-gradient(152deg, transparent 49.88%, var(--border-hairline) 49.88% 50%, transparent 50%),
    radial-gradient(circle, transparent 0 47%, var(--border-hairline) 47% 51%, transparent 51% 70%, var(--border-hairline) 70% 70.3%, transparent 70.3%);
}

.folio-main::after {
  content: "";
  position: absolute;
  top: 56px;
  right: 5%;
  width: min(20vw, 290px);
  aspect-ratio: 1;
  border: 1px dotted var(--border-hairline);
  border-radius: 50%;
  opacity: 0.45;
  pointer-events: none;
  transform: rotate(calc(var(--active-cat-index) * -11deg));
  transition: transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}

.folio-search-bar {
  position: sticky;
  top: calc(var(--header-height) + 1px);
  z-index: 35;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  min-height: 56px;
  padding: 0;
  border-bottom: 1px solid var(--border-hairline);
  background: color-mix(in srgb, var(--bg-page) 91%, transparent);
  -webkit-backdrop-filter: blur(8px) saturate(112%);
  backdrop-filter: blur(8px) saturate(112%);
}

.folio-search-bar .archive-search-section {
  z-index: auto;
  flex: 1;
  min-width: 0;
  margin: 0;
  padding: 0;
}

.folio-search-bar .search-box-frame {
  min-height: 39px;
  padding: 4px 10px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.folio-search-bar .search-box-frame::before,
.folio-search-bar .search-box-frame::after {
  display: none;
}

.folio-search-bar .search-box-frame:focus-within {
  box-shadow: none;
}

.folio-search-bar .search-glyph {
  margin-right: 8px;
  color: var(--accent-brass);
}

.folio-search-bar .search-engine-picker {
  margin-right: 7px;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.folio-search-bar .search-engine-picker.is-external {
  background: transparent;
}

.folio-search-bar .search-engine-select {
  padding: 2px 17px 2px 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.06em;
}

.folio-search-bar .search-engine-picker .engine-caret {
  right: 2px;
}

.folio-search-bar .archive-search-input {
  font-family: var(--font-serif);
  font-size: 0.875rem;
}

.folio-search-bar .archive-search-input::placeholder {
  font-family: var(--font-serif);
  font-size: 0.75rem;
}

.folio-search-bar .search-tools {
  gap: 7px;
  margin-left: 8px;
}

.folio-search-bar .kbd-tag {
  border: 1px solid var(--border-hairline);
  background: transparent;
}

.folio-search-meta {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  gap: 2px;
  min-width: 82px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  line-height: 1.35;
  letter-spacing: 0.1em;
  text-align: right;
}

.folio-search-meta span:first-child {
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
}

.folio-main > .footer-utility-rack {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 15px;
  margin-top: 44px;
  padding: 26px 0 8px;
  border-top: 1px solid var(--layout-rule-strong);
}

.footer-utility-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 24px;
  align-items: baseline;
}

.footer-utility-kicker {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.16em;
}

.footer-utility-heading p {
  max-width: 58ch;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.75rem;
  line-height: 1.75;
}

.footer-view-switcher {
  grid-area: auto;
  grid-column: 1 / -1;
  order: initial;
  width: auto;
  justify-self: start;
  margin: 0;
  padding: 0;
  border-right: 0;
}

.folio-main > .footer-utility-rack > * {
  min-width: 0;
  grid-column: 1 / -1;
}

.folio-main > .footer-utility-rack .mobile-phase3-actions,
.folio-main > .footer-utility-rack .mobile-phase4b-actions {
  grid-area: auto;
  order: initial;
  width: 100%;
  justify-content: flex-start;
}

.footer-utility-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 10px 0;
  border-top: 1px dashed var(--border-hairline);
  border-bottom: 1px dashed var(--border-hairline);
}

.footer-utility-actions .theme-switch-btn {
  min-height: 31px;
  padding: 4px 9px;
  border-color: transparent;
  font-family: var(--font-serif);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
}

.footer-utility-actions .ephemeris-switch-btn,
.footer-utility-actions .courier-switch-btn,
.footer-utility-actions .federation-switch-btn,
.footer-utility-actions .shortcuts-switch-btn,
.footer-utility-actions .cloud-sync-btn {
  min-width: 0;
  padding-inline: 9px;
}

.footer-utility-actions .ephemeris-label,
.footer-utility-actions .courier-label,
.footer-utility-actions .federation-label,
.footer-utility-actions .shortcuts-label,
.footer-utility-actions .cloud-label {
  display: inline;
}

.footer-utility-actions .theme-switch-btn:hover,
.footer-utility-actions .theme-switch-btn:focus-visible {
  border-color: var(--border-hairline);
  background: color-mix(in srgb, var(--bg-subtle) 40%, transparent);
}

.footer-utility-actions .footer-utility-btn {
  display: inline-flex;
  width: auto;
  margin: 0;
  padding: 4px 9px;
  border-style: solid;
  font-family: var(--font-serif);
  font-size: 0.6875rem;
  line-height: 1.4;
}

.footer-utility-actions .footer-utility-btn .uncatalogued-meta {
  margin-left: 4px;
}

.footer-utility-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px 14px;
  color: var(--text-faint);
}

.footer-utility-filters > span {
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
}

.footer-utility-filters .search-quick-hooks,
.footer-utility-filters .almanac-status-switch {
  justify-content: flex-start;
  margin: 0;
}

.footer-utility-filters .search-hook-btn {
  font-size: 0.6875rem;
}

.footer-utility-filters .almanac-window-btn {
  font-size: 0.625rem;
}

.footer-observatory {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 10px 18px;
  align-items: center;
}

.footer-observatory-label {
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
}

.footer-observatory .constellation-rail {
  padding: 0;
  border-bottom: 0;
}

@media (max-width: 900px) {
  .folio-main > .footer-utility-rack {
    margin-top: 32px;
    padding-top: 20px;
  }

  .footer-utility-heading {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .footer-observatory {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

@media (max-width: 640px) {
  .folio-main > .footer-utility-rack {
    gap: 12px;
    margin-top: 26px;
    padding-top: 16px;
  }

  .footer-utility-actions {
    gap: 4px;
    padding: 7px 0;
  }

  .footer-utility-actions .theme-switch-btn,
  .footer-utility-actions .footer-utility-btn {
    min-height: 32px;
    padding: 4px 7px;
    font-size: 0.625rem;
  }

  .footer-utility-filters {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .mobile-phase3-actions,
  .mobile-phase4b-actions {
    order: initial;
    width: 100%;
    margin-left: 0;
    padding: 3px 0;
    justify-content: flex-start;
  }
}

.folio-main > .archive-main-area,
.folio-main > .search-status-bar,
.folio-main > .arrange-toolbar {
  position: relative;
  z-index: 2;
}

.folio-main > .search-status-bar {
  margin: 0;
  border-top: 0;
}

.folio-main .archive-section {
  position: relative;
  padding: 38px 0 52px;
  border-bottom: 1px solid var(--layout-rule);
}

.folio-main .archive-section::before {
  top: 28px;
  right: 0;
  font-size: 0.5rem;
}

.folio-main .section-masthead-rule {
  align-items: flex-start;
  margin-bottom: 24px;
  padding-bottom: 12px;
}

.folio-main .section-heading-group {
  flex-wrap: wrap;
  gap: 5px 12px;
}

.folio-main .section-title-text {
  font-size: clamp(1.35rem, 1.9vw, 1.75rem);
}

.folio-main .section-desc-text {
  display: block;
  width: 100%;
  padding-left: 0;
  font-size: 0.6875rem;
}

.folio-main .entries-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-auto-flow: dense;
  align-items: stretch;
  gap: 16px;
  width: 100%;
}

.folio-main .entries-grid > .entry-card.card--monograph {
  grid-column: span 8;
}

.folio-main .entries-grid > .entry-card.card--archive:nth-child(2),
.folio-main .entries-grid > .entry-card.card--archive:only-child {
  grid-column: span 4;
}

.folio-main .entries-grid > .entry-card.card--archive:nth-child(3),
.folio-main .entries-grid > .entry-card.card--archive:nth-child(4) {
  grid-column: span 6;
}

.folio-main .entries-grid > .entry-card.card--slip {
  grid-column: span 4;
  align-self: start;
}

.folio-main .entries-grid > .entry-card.card--full {
  grid-column: span 12;
}

@keyframes folioCardDrawIn {
  from {
    opacity: 0;
    transform: translateX(12px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.folio-main .entry-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--border-card);
  border-radius: 0;
  background: color-mix(in srgb, var(--bg-surface) 86%, transparent);
  box-shadow: none;
  animation: folioCardDrawIn 0.42s cubic-bezier(0.22, 1, 0.36, 1) both;
  animation-delay: min(calc(var(--stagger-idx, 0) * 20ms), 200ms);
  transition:
    border-color 0.25s ease,
    background-color 0.25s ease,
    box-shadow 0.25s ease,
    transform 0.25s ease;
}

.folio-main .entry-card::before {
  display: none;
}

.folio-main .entry-card::after {
  position: absolute;
  top: 9px;
  right: 9px;
  bottom: 9px;
  left: 9px;
  width: auto;
  height: auto;
  border: 0;
  background:
    linear-gradient(var(--border-hairline), var(--border-hairline)) left top / 7px 1px no-repeat,
    linear-gradient(var(--border-hairline), var(--border-hairline)) left top / 1px 7px no-repeat,
    linear-gradient(var(--border-hairline), var(--border-hairline)) right top / 7px 1px no-repeat,
    linear-gradient(var(--border-hairline), var(--border-hairline)) right top / 1px 7px no-repeat,
    linear-gradient(var(--border-hairline), var(--border-hairline)) left bottom / 7px 1px no-repeat,
    linear-gradient(var(--border-hairline), var(--border-hairline)) left bottom / 1px 7px no-repeat,
    linear-gradient(var(--border-hairline), var(--border-hairline)) right bottom / 7px 1px no-repeat,
    linear-gradient(var(--border-hairline), var(--border-hairline)) right bottom / 1px 7px no-repeat;
  opacity: 0.8;
  pointer-events: none;
  transform: none;
}

.folio-main .entry-card:hover {
  border-color: var(--accent-brass);
  background-color: color-mix(in srgb, var(--bg-surface) 95%, var(--accent-brass) 5%);
  box-shadow: 0 5px 16px -14px color-mix(in srgb, var(--accent-brass) 42%, transparent);
  transform: none;
}

.folio-main .card-emblem {
  border-radius: 50%;
}

.folio-main .card-title-text {
  letter-spacing: -0.025em;
}

.folio-main .card-masthead {
  margin-bottom: 16px;
}

.folio-main .card-synopsis {
  margin-bottom: 16px;
  font-size: 0.8125rem;
  line-height: 1.65;
}

.folio-main .card-bottom-rail {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--border-hairline);
}

.folio-main .card-tag-pill {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  background: transparent;
  padding: 0;
  border: 0;
}

.folio-main .btn-bookplate,
.folio-main .card-jump-mark {
  font-size: 0.6875rem;
}

.folio-main .card--monograph {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 130px;
  grid-template-rows: auto auto 1fr;
  padding: 24px 0 18px 24px;
}

.folio-main .card--monograph .card-masthead,
.folio-main .card--monograph .card-synopsis,
.folio-main .card--monograph .card-bottom-rail {
  grid-column: 1;
}

.folio-main .card--monograph .card-masthead {
  padding-right: 15px;
  margin-bottom: 20px;
}

.folio-main .card--monograph .card-synopsis {
  max-width: 43ch;
  margin: 0 15px 20px 0;
  font-size: 0.875rem;
}

.folio-main .card--monograph .card-bottom-rail {
  align-self: end;
  margin-right: 15px;
}

.folio-main .card--monograph .card-title-text {
  font-size: 1.5rem;
}

.folio-main .card--monograph .card-emblem {
  width: 42px;
  height: 42px;
}

.folio-main .card-monograph-plate {
  position: relative;
  display: none;
  flex-direction: column;
  grid-column: 2;
  grid-row: 1 / -1;
  align-items: center;
  justify-content: space-between;
  min-width: 0;
  padding: 16px 8px 2px;
  border-left: 1px dashed var(--border-hairline);
  text-align: center;
}

.folio-main .card--monograph > .card-monograph-plate {
  display: flex;
}

.card-monograph-orbit {
  position: absolute;
  top: 34px;
  left: 50%;
  width: 78px;
  height: 78px;
  border: 1px solid var(--border-hairline);
  border-radius: 50%;
  transform: translateX(-50%);
  opacity: 0.8;
}

.card-monograph-orbit::before,
.card-monograph-orbit::after {
  content: "";
  position: absolute;
  background: var(--border-hairline);
}

.card-monograph-orbit::before {
  top: 50%;
  left: 8px;
  right: 8px;
  height: 1px;
}

.card-monograph-orbit::after {
  top: 8px;
  bottom: 8px;
  left: 50%;
  width: 1px;
}

.card-monograph-number {
  position: relative;
  z-index: 1;
  margin-top: 31px;
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 2rem;
  font-style: italic;
  line-height: 1;
  opacity: 0.34;
  white-space: nowrap;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.btn-monograph-plate {
  position: relative;
  z-index: 1;
  padding: 5px 6px;
  border: 1px solid color-mix(in srgb, var(--accent-stamp) 46%, transparent);
  background: color-mix(in srgb, var(--accent-stamp) 6%, transparent);
  font-family: var(--font-serif);
  font-size: 0.625rem;
  white-space: nowrap;
}

.btn-monograph-plate:hover {
  border-color: var(--accent-stamp);
  background: color-mix(in srgb, var(--accent-stamp) 14%, transparent);
}

.card--monograph > .card-bottom-rail .btn-bookplate {
  display: none;
}

.folio-main .card--archive {
  padding: 20px;
}

.folio-main .card--archive .card-title-text {
  font-size: 1.125rem;
}

.folio-main .card--full {
  padding: 24px;
}

.folio-main .card--full .card-masthead {
  margin-bottom: 18px;
}

.folio-main .card--full .card-title-text {
  font-size: 1.35rem;
}

.folio-main .card--full .card-synopsis {
  max-width: 72ch;
  font-size: 0.875rem;
}

.folio-main .card--full > .card-monograph-plate {
  display: none;
}

.folio-main .card--slip {
  position: relative;
  display: flex;
  flex-direction: row;
  align-items: center;
  min-height: 68px;
  padding: 0;
  background-image:
    linear-gradient(90deg, transparent 0 40px, var(--border-hairline) 40px 41px, transparent 41px),
    radial-gradient(circle at 20px 18px, var(--accent-brass) 0 1px, transparent 1.8px);
  background-repeat: no-repeat;
}

.folio-main .card--slip .card-masthead,
.folio-main .card--slip > .card-synopsis,
.folio-main .card--slip > .card-bottom-rail {
  display: none;
}

.card-slip-compact {
  display: none;
}

.card-slip-link,
.folio-main .card--slip .card-slip-bookmark {
  display: none;
}

.folio-main .card--slip .card-slip-compact {
  display: flex;
  flex: 1;
  align-items: center;
  align-self: stretch;
  min-width: 0;
  gap: 10px;
  padding: 9px 7px 9px 13px;
}

.folio-main .card--slip .card-slip-link {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  gap: 2px;
  padding: 7px 6px 7px 8px;
  color: inherit;
  line-height: normal;
  text-decoration: none;
}

.folio-main .card--slip .card-slip-title,
.folio-main .card--slip .card-slip-summary {
  display: block;
  width: 100%;
}

.folio-main .card--slip .card-slip-bookmark {
  display: flex;
  flex-shrink: 0;
  align-self: center;
  margin-right: 7px;
}

.folio-main .card--slip .card-slip-emblem {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.folio-main .card--slip .card-slip-emblem .emblem-img {
  width: 18px;
  height: 18px;
}

.card-slip-index {
  order: -1;
  margin-right: 1px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 0.625rem;
  font-style: italic;
  line-height: 1;
  opacity: 0.8;
  white-space: nowrap;
  cursor: pointer;
}

.card-slip-title {
  overflow: hidden;
  color: var(--text-main);
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-slip-summary {
  overflow: hidden;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.625rem;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-slip-domain {
  overflow: hidden;
  max-width: 64px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.04em;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.card-slip-arrow {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  opacity: 0.72;
  transition: transform var(--transition-fast);
}

.folio-main .card--slip:hover .card-slip-arrow {
  transform: translate(2px, -2px);
}

.folio-main .card--slip .card-slip-link:focus-visible {
  outline: 0;
  box-shadow: inset 0 -1px 0 var(--accent-brass);
}

.folio-main .card--slip .card-slip-link:focus-visible::after {
  content: "开卷";
  margin-top: 2px;
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.08em;
}

.folio-main .card--slip:focus-within {
  border-color: var(--accent-brass);
}

[data-theme="dark"] .folio-main .entry-card {
  background: color-mix(in srgb, var(--bg-surface) 72%, transparent);
}

[data-theme="dark"] .folio-main .entry-card:hover {
  background: color-mix(in srgb, var(--bg-surface) 88%, var(--accent-brass) 4%);
}

@media (max-width: 1050px) {
  :root {
    --folio-spine-width: 255px;
  }

  .folio-main {
    padding: 0 24px;
  }

  .ex-libris-plate .masthead-headline {
    font-size: 1.75rem;
  }

  .folio-main .entries-grid > .entry-card.card--monograph {
    grid-column: span 12;
  }

  .folio-main .entries-grid > .entry-card.card--archive:nth-child(2),
  .folio-main .entries-grid > .entry-card.card--archive:nth-child(3),
  .folio-main .entries-grid > .entry-card.card--archive:nth-child(4) {
    grid-column: span 6;
  }

  .folio-main .entries-grid > .entry-card.card--slip {
    grid-column: span 6;
  }
}

@media (max-width: 900px) {
  .folio-shell {
    display: block !important;
    width: 100%;
    max-width: 100%;
    overflow-x: clip;
    min-height: 0;
  }

  .folio-shell::before,
  .folio-shell::after {
    display: none;
  }

  .folio-spine {
    position: relative;
    top: auto;
    height: auto;
    overflow: visible;
    border-bottom: 1px solid var(--border-hairline);
  }

  .folio-spine-inner {
    display: block;
    min-height: 0;
    padding: 20px 20px 0;
  }

  .ex-libris-plate.editorial-masthead {
    margin-bottom: 18px;
  }

  .plate-frame {
    min-height: 0;
    padding: 10px;
  }

  .ex-libris-plate .masthead-meta {
    margin-bottom: 18px;
  }

  .ex-libris-plate .masthead-headline {
    max-width: none;
    margin: 8px 0;
    font-size: clamp(1.75rem, 5vw, 2.25rem);
  }

  .ex-libris-plate .masthead-epigraph {
    max-width: 500px;
  }

  .plate-imprint {
    margin-top: 12px;
  }

  .spine-nav.category-index-nav {
    margin: 0 -20px;
    padding: 0 20px;
    overflow: hidden;
  }

  .spine-nav .index-tabs-rail {
    flex-direction: row;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 11px;
    scrollbar-width: none;
  }

  .spine-nav .index-tabs-rail::-webkit-scrollbar {
    display: none;
  }

  .spine-nav .index-tab-item {
    display: inline-flex;
    flex: 0 0 auto;
    width: auto;
    min-height: 32px;
    padding: 6px 8px;
    border-bottom: 1px solid transparent;
    font-size: 0.75rem;
    white-space: nowrap;
  }

  .spine-nav .index-tab-item::before {
    display: none;
  }

  .spine-nav .index-tab-item:hover,
  .spine-nav .index-tab-item.active {
    padding-left: 8px;
    border-bottom-color: var(--accent-brass);
    background: transparent;
  }

  .tab-coordinate {
    font-size: 0.5rem;
  }

  .tab-spine-line {
    display: none;
  }

  .spine-colophon {
    display: none;
  }

  .folio-main {
    padding: 0 20px;
    background-size: 80px 80px;
  }

  .folio-search-bar {
    top: calc(var(--header-height) + 1px);
    height: 52px;
    margin: 0 -20px;
    padding: 0 20px;
  }

  .folio-search-meta {
    display: none;
  }

  .folio-search-bar .archive-search-section {
    padding-right: 0;
  }

  .folio-main::before,
  .folio-main::after {
    display: none;
  }

  .folio-main .archive-section {
    scroll-margin-top: 116px;
    padding: 30px 0 38px;
  }

  .folio-main .archive-section::before {
    display: none;
  }

  .folio-main .entries-grid > .entry-card.card--monograph,
  .folio-main .entries-grid > .entry-card.card--full,
  .folio-main .entries-grid > .entry-card.card--archive:nth-child(2),
  .folio-main .entries-grid > .entry-card.card--archive:nth-child(3),
  .folio-main .entries-grid > .entry-card.card--archive:nth-child(4) {
    grid-column: span 12;
  }

  .folio-main .entries-grid > .entry-card.card--slip {
    grid-column: span 6;
  }

  .folio-main .card--monograph {
    padding: 20px 0 18px 20px;
  }

  .folio-main .card--monograph .card-title-text {
    font-size: 1.35rem;
  }
}

@media (max-width: 640px) {
  .top-colophon-bar {
    padding: 0 16px;
  }

  .colophon-right .theme-switch-btn {
    padding: 5px 7px;
    font-size: 0.6875rem;
  }

  .colophon-right .theme-switch-btn::after {
    left: 7px;
    right: 7px;
  }

  .colophon-right .theme-switch-btn + .theme-switch-btn::before {
    left: -2px;
  }

  .folio-spine-inner {
    padding: 15px 16px 0;
  }

  .spine-nav.category-index-nav {
    margin: 0 -16px;
    padding: 0 16px;
  }

  .ex-libris-plate .masthead-issue > span:nth-child(2) {
    max-width: 190px;
  }

  .plate-orbit {
    top: 44px;
    right: -24px;
    width: 92px;
    height: 92px;
  }

  .ex-libris-plate .masthead-headline {
    font-size: 1.72rem;
  }

  .folio-main {
    padding: 0 16px;
    background-size: 64px 64px;
  }

  .folio-search-bar {
    margin: 0 -16px;
    padding: 0 16px;
  }

  .folio-search-bar .search-box-frame {
    padding: 4px 2px;
  }

  .folio-search-bar .archive-search-input::placeholder {
    font-size: 0.6875rem;
  }

  .folio-main .entries-grid {
    gap: 10px;
  }

  .folio-main .card--monograph {
    display: block;
    padding: 18px;
    width: 100%;
  }

  .folio-main .card-monograph-plate {
    display: none;
  }

  /* The tier rule above is more specific than the phone-width rule. */
  .folio-main .card--monograph > .card-monograph-plate {
    display: none;
  }

  .folio-main .card--monograph .card-bottom-rail .btn-bookplate {
    display: inline-flex;
  }

  .folio-main .entries-grid > .entry-card.card--archive,
  .folio-main .entries-grid > .entry-card.card--archive:nth-child(2),
  .folio-main .entries-grid > .entry-card.card--archive:nth-child(3),
  .folio-main .entries-grid > .entry-card.card--archive:nth-child(4) {
    grid-column: span 12;
    padding: 18px;
  }

  .folio-main .entries-grid > .entry-card.card--slip {
    grid-column: span 12;
    min-height: 64px;
  }

  .folio-main .card--slip .card-slip-domain {
    display: none;
  }

  .folio-main .section-heading-group {
    gap: 4px 8px;
  }

  .folio-main .section-desc-text {
    font-size: 0.625rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .folio-main::before,
  .folio-main::after {
    transition: none;
  }

  .colophon-right .theme-switch-btn::after,
  .spine-nav .index-tab-item,
  .spine-nav .index-tab-item::before {
    transition: none;
  }

  .folio-main .entry-card {
    animation: none;
  }

  [data-theme="light"] body,
  [data-theme="light"] .archive-wrapper::before,
  [data-theme="light"] .entry-card {
    transition: none !important;
  }
}

@media (max-width: 768px) {
  /* 抵消旧版响应式规则中的单列 !important 冲突。 */
  .folio-main .entries-grid > .entry-card {
    grid-column: span 12 !important;
    width: 100%;
    min-width: 0;
  }
}

/* --------------------------------------------------------------------------
   Phase 0/1 · EX LIBRIS 索书指令、借阅热度与今日开卷
   -------------------------------------------------------------------------- */

.colophon-right {
  min-width: 0;
}

.top-colophon-bar .colophon-right {
  margin-left: auto;
}

.top-colophon-bar .colophon-right .theme-switch-btn {
  min-width: 76px;
  justify-content: center;
}

.header-key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 16px;
  height: 16px;
  padding: 0 3px;
  border: 1px solid var(--border-hairline);
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  line-height: 1;
}

.random-switch-btn .random-icon {
  color: var(--accent-brass);
  transition: transform var(--transition-normal);
}

.random-switch-btn:hover .random-icon {
  transform: rotate(90deg) scale(1.12);
}

.spine-uncatalogued-entry {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr) auto;
  gap: 6px;
  align-items: center;
  width: 100%;
  margin-top: 20px;
  padding: 10px 4px 10px 12px;
  border: 1px dashed var(--border-hairline);
  background: transparent;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.75rem;
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.spine-uncatalogued-entry:hover {
  border-color: var(--accent-brass);
  background: color-mix(in srgb, var(--bg-subtle) 38%, transparent);
  color: var(--accent-brass);
}

.spine-snippets-entry {
  margin-top: 8px;
  margin-bottom: 8px;
}

.spine-snippets-entry .uncatalogued-glyph {
  font-family: var(--font-serif);
  font-size: 0.75rem;
}

.uncatalogued-glyph {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

.uncatalogued-meta {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.folio-search-bar {
  overflow: visible;
}

.folio-search-bar .archive-search-section {
  position: relative;
}

.folio-command-panel {
  position: absolute;
  top: calc(100% + 5px);
  right: 16px;
  left: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  padding: 5px 0;
  border: 1px solid var(--border-medium);
  border-top: 2px solid var(--accent-brass);
  background: color-mix(in srgb, var(--bg-surface) 98%, transparent);
  box-shadow: var(--shadow-lift);
}

.folio-command-panel[hidden] {
  display: none;
}

.folio-command-item {
  display: grid;
  grid-template-columns: 16px 88px minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  width: 100%;
  min-height: 42px;
  padding: 7px 13px;
  border: 0;
  border-bottom: 1px dotted var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.75rem;
  text-align: left;
  cursor: pointer;
}

.folio-command-item:last-child {
  border-bottom: 0;
}

.folio-command-item.is-active,
.folio-command-item:hover {
  background: color-mix(in srgb, var(--accent-brass) 9%, transparent);
  color: var(--text-main);
}

.command-sigil,
.command-hint {
  color: var(--accent-brass);
  font-family: var(--font-mono);
}

.command-name {
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.02em;
}

.command-hint {
  color: var(--text-faint);
  font-size: 0.5rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.folio-command-empty {
  padding: 14px;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.75rem;
  font-style: italic;
}

.search-quick-hooks {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 2px 8px;
  margin-top: 2px;
}

.search-hook-btn {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.5625rem;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.search-hook-btn:hover,
.search-hook-btn:focus-visible {
  color: var(--accent-brass);
}

.card-ledger-rail {
  display: flex;
  flex-direction: column;
  min-width: 0;
  gap: 2px;
}

.card-ledger-stamp {
  overflow: hidden;
  max-width: 22ch;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.01em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-call-number {
  color: var(--accent-brass);
  font-family: var(--font-mono);
}

.card-dust-mark {
  position: absolute;
  top: 9px;
  right: 10px;
  z-index: 2;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.5rem;
  letter-spacing: 0.08em;
  opacity: 0.54;
  pointer-events: none;
}

.folio-main .entry-card.card--dusty {
  opacity: 0.78;
}

.folio-main .entry-card.card--dusty:hover,
.folio-main .entry-card.card--dusty:focus-within {
  opacity: 1;
}

.folio-chord-stamp {
  position: fixed;
  top: calc(var(--header-height) + 14px);
  right: 22px;
  z-index: 10020;
  display: flex;
  flex-direction: column;
  min-width: 210px;
  max-width: min(360px, calc(100vw - 32px));
  padding: 13px 17px 12px;
  border: 1px solid var(--accent-brass);
  background: color-mix(in srgb, var(--bg-surface) 96%, transparent);
  box-shadow: 0 10px 34px -18px rgba(0, 0, 0, 0.5);
  color: var(--text-main);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity var(--transition-fast), transform var(--transition-normal);
}

.folio-chord-stamp::before,
.folio-chord-stamp::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  border-color: var(--accent-brass);
  border-style: solid;
}

.folio-chord-stamp::before {
  top: 3px;
  left: 3px;
  border-width: 1px 0 0 1px;
}

.folio-chord-stamp::after {
  right: 3px;
  bottom: 3px;
  border-width: 0 1px 1px 0;
}

.folio-chord-stamp.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.folio-chord-stamp.is-error {
  border-color: var(--accent-stamp);
}

.chord-stamp-kicker {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.46875rem;
  letter-spacing: 0.13em;
}

.chord-stamp-title {
  margin-top: 2px;
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 0.875rem;
  font-weight: 600;
}

.chord-stamp-sub {
  overflow: hidden;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.today-open-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 10010;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 22px;
  background: rgba(18, 21, 18, 0.7);
  -webkit-backdrop-filter: blur(7px);
  backdrop-filter: blur(7px);
  animation: modalBackdropFadeIn 0.22s ease-out;
}

.today-open-card {
  position: relative;
  width: min(760px, 100%);
  max-height: 92vh;
  overflow: auto;
  border: 1px solid var(--accent-brass);
  background: var(--bg-surface);
  box-shadow: var(--shadow-modal);
  animation: todayCardArrive 0.36s cubic-bezier(0.22, 1, 0.36, 1);
}

.today-open-card::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid var(--border-hairline);
  pointer-events: none;
}

.today-open-card.is-turning {
  animation: todayCardTurn 0.46s cubic-bezier(0.22, 1, 0.36, 1);
}

.today-open-orbit {
  position: absolute;
  top: 36px;
  right: 38px;
  width: 180px;
  height: 180px;
  border: 1px solid var(--border-hairline);
  border-radius: 50%;
  opacity: 0.4;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent calc(50% - 0.5px), var(--border-hairline) calc(50% - 0.5px) calc(50% + 0.5px), transparent calc(50% + 0.5px)),
    linear-gradient(0deg, transparent calc(50% - 0.5px), var(--border-hairline) calc(50% - 0.5px) calc(50% + 0.5px), transparent calc(50% + 0.5px));
}

.today-open-header {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  padding: 25px 28px 17px;
  border-bottom: 1px solid var(--border-hairline);
}

.today-open-kicker {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.13em;
}

.today-open-title {
  margin: 4px 0 0;
  color: var(--text-main);
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: 600;
  letter-spacing: -0.03em;
}

.btn-close-today-open {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
}

.btn-close-today-open:hover {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

.today-open-body {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  min-height: 300px;
}

.today-open-number-rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 34px 16px 26px;
  border-right: 1px dashed var(--border-hairline);
}

.today-open-number {
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 2.1rem;
  font-style: italic;
  line-height: 1;
}

.today-open-rule {
  width: 1px;
  flex: 1;
  background: linear-gradient(var(--border-hairline), transparent);
}

.today-open-seal {
  padding: 7px;
  border: 1px solid color-mix(in srgb, var(--accent-stamp) 55%, transparent);
  color: var(--accent-stamp);
  font-family: var(--font-serif);
  font-size: 0.5625rem;
  letter-spacing: 0.12em;
  line-height: 1.2;
  text-align: center;
}

.today-open-editorial {
  padding: 33px 42px 30px 34px;
}

.today-open-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.today-open-site-title {
  margin: 14px 0 14px;
  color: var(--text-main);
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 4vw, 2.75rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.today-open-desc {
  max-width: 48ch;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.9375rem;
  line-height: 1.9;
}

.today-open-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 10px;
  margin-top: 22px;
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
}

.today-open-footer {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 15px 28px;
  border-top: 1px solid var(--border-hairline);
  background: var(--bg-subtle);
}

.btn-today-open-secondary,
.btn-today-open-primary {
  min-height: 38px;
  padding: 7px 17px;
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.btn-today-open-secondary {
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
}

.btn-today-open-primary {
  border: 1px solid var(--accent-brass);
  background: var(--accent-brass);
  color: var(--bg-surface);
}

.btn-today-open-secondary:hover {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

.btn-today-open-primary:hover {
  filter: brightness(1.1);
}

.folio-main.is-serendipity-spinning::before {
  transform: rotate(calc(var(--active-cat-index) * 18deg + 180deg)) scale(1.05);
  transition-duration: 0.45s;
}

.folio-main.is-serendipity-spinning::after {
  transform: rotate(calc(var(--active-cat-index) * -11deg - 180deg));
  transition-duration: 0.45s;
}

@keyframes todayCardArrive {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes todayCardTurn {
  0% {
    opacity: 0;
    transform: rotateY(-9deg) translateY(12px);
  }
  100% {
    opacity: 1;
    transform: rotateY(0) translateY(0);
  }
}

@media (max-width: 900px) {
  .folio-shell {
    display: block !important;
  }

  .folio-main .entries-grid > .entry-card {
    grid-column: span 12 !important;
    width: 100%;
    min-width: 0;
  }

  .folio-spine {
    position: sticky;
    top: var(--header-height);
    z-index: 45;
    isolation: isolate;
    height: auto;
    overflow: visible;
    border-bottom: 1px solid var(--border-hairline);
    background: color-mix(in srgb, var(--bg-page) 96%, transparent);
    -webkit-backdrop-filter: blur(8px) saturate(112%);
    backdrop-filter: blur(8px) saturate(112%);
  }

  .ex-libris-plate.editorial-masthead {
    display: none;
  }

  .folio-spine-inner {
    padding: 9px 20px 0;
  }

  .spine-nav.category-index-nav {
    position: relative;
    z-index: 46;
    padding-top: 0;
  }

  .folio-spine {
    --mobile-spine-height: 62px;
    box-shadow: 0 1px 0 var(--bg-page), 0 8px 18px -18px var(--text-main);
  }

  /* The search bar must disappear behind the horizontal spine while scrolling. */
  .folio-spine,
  .folio-spine-inner,
  .spine-nav.category-index-nav {
    background: color-mix(in srgb, var(--bg-page) 98%, transparent);
  }

  .spine-nav .index-tabs-rail {
    display: flex;
    flex-direction: row;
    align-items: center;
    flex-wrap: nowrap;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 9px;
    scroll-snap-type: x proximity;
  }

  .spine-nav .index-tab-item,
  .spine-nav .spine-aux-item {
    display: inline-flex;
    flex: 0 0 auto;
    width: auto;
    min-height: 32px;
    padding: 6px 8px;
    border-bottom: 1px solid transparent;
    font-size: 0.75rem;
    white-space: nowrap;
    scroll-snap-align: start;
  }

  .spine-nav .index-tab-item::before,
  .spine-nav .spine-aux-item + .index-tab-item::after,
  .tab-spine-line {
    display: none;
  }

  .spine-nav .index-tab-item:hover,
  .spine-nav .index-tab-item.active {
    padding-left: 8px;
    border-bottom-color: var(--accent-brass);
    background: transparent;
  }

  .spine-uncatalogued-entry {
    display: none;
  }

  .uncatalogued-meta {
    display: none;
  }

  .folio-search-bar {
    top: calc(var(--header-height) + 63px);
    z-index: 60;
    box-shadow: 0 1px 0 var(--border-hairline);
  }

  .folio-command-panel {
    right: 0;
  }
}

@media (max-width: 640px) {
  .colophon-sub-title,
  .random-switch-btn .random-label,
  .random-switch-btn .header-key {
    display: none;
  }

  .random-switch-btn {
    min-width: 32px;
    justify-content: center;
  }

  .spine-nav.category-index-nav {
    margin: 0 -16px;
    padding: 0 16px;
  }

  .folio-main .entries-grid {
    gap: 10px;
  }

  .today-open-modal-backdrop {
    align-items: flex-end;
    padding: 10px;
  }

  .today-open-card {
    width: 100%;
    max-height: calc(100vh - 20px);
  }

  .today-open-orbit {
    display: none;
  }

  .today-open-header {
    padding: 19px 18px 14px;
  }

  .today-open-title {
    font-size: 1.35rem;
  }

  .today-open-body {
    grid-template-columns: 1fr;
  }

  .today-open-number-rail {
    flex-direction: row;
    justify-content: space-between;
    padding: 16px 18px;
    border-right: 0;
    border-bottom: 1px dashed var(--border-hairline);
  }

  .today-open-rule {
    width: auto;
    height: 1px;
    flex: 1;
    background: linear-gradient(90deg, var(--border-hairline), transparent);
  }

  .today-open-number {
    font-size: 1.55rem;
  }

  .today-open-editorial {
    padding: 20px 18px 22px;
  }

  .today-open-site-title {
    margin-top: 10px;
    font-size: 2rem;
  }

  .today-open-desc {
    font-size: 0.875rem;
    line-height: 1.75;
  }

  .today-open-footer {
    padding: 12px 18px;
  }

  .btn-today-open-secondary,
  .btn-today-open-primary {
    flex: 1;
  }

  .folio-command-item {
    grid-template-columns: 14px 76px minmax(0, 1fr);
  }

  .command-hint {
    display: none;
  }

  .folio-chord-stamp {
    top: 64px;
    right: 12px;
    left: 12px;
    min-width: 0;
  }

  .search-quick-hooks {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .folio-chord-stamp,
  .today-open-card,
  .folio-main.is-serendipity-spinning::before,
  .folio-main.is-serendipity-spinning::after {
    animation: none !important;
    transition: none !important;
    transform: none !important;
  }
}

/* ==========================================================================
   16. 昼夜时序与阅读室氛围系统 (Phase 4: Day/Night Circadian & Reading Room Ambiance)
   ========================================================================== */

/* 纸张质感强化：为主要卡片容器补充纯正出版物纸面边缘微投影与触感 */
.entry-card,
.bookplate-modal-card {
  position: relative;
}

/* 纸面微光感与墨色融合提升 */
[data-theme="light"] .entry-card {
  box-shadow:
    0 1px 2px rgba(36, 37, 31, 0.035),
    0 7px 18px -12px var(--observatory-shadow),
    0 0 0 1px rgba(226, 223, 212, 0.6);
}

[data-theme="dark"] .entry-card {
  box-shadow:
    0 1px 4px rgba(0, 0, 0, 0.4),
    0 12px 28px -20px rgba(0, 0, 0, 0.9),
    inset 0 1px 0 rgba(201, 220, 241, 0.035),
    0 0 0 1px rgba(48, 61, 79, 0.8);
}

/* 阅读室台灯焦点晕染：突出当前活跃/悬停卡片的聚光灯质感 */
.entry-card:hover {
  box-shadow: var(--shadow-lift), 0 0 0 1px var(--color-accent);
}

/* ==========================================================================
   17. 键盘无障碍漫游与微动效打磨 (Phase 6: Keyboard Accessibility & Micro-interactions)
   ========================================================================== */

/* 全站焦点环重塑：剔除浏览器默认生硬蓝框，代之以独立杂志暖调微光 */
:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  box-shadow: 0 0 0 1px rgba(78, 93, 75, 0.2), 0 2px 8px rgba(36, 37, 31, 0.08);
  border-radius: var(--radius-sm);
}

[data-theme="dark"] :focus-visible {
  outline-color: var(--color-accent);
  box-shadow: 0 0 0 1px rgba(184, 150, 90, 0.35), 0 2px 10px rgba(0, 0, 0, 0.5);
}

/* 顶部栏快捷键指南按钮 */
.shortcuts-switch-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.shortcuts-icon {
  font-size: 0.95rem;
}

/* 键盘漫游选中状态 (Keyboard Focused Items) */
.entry-card.keyboard-focused {
  border-color: var(--color-accent) !important;
  transform: translateY(-4px) !important;
  box-shadow: var(--shadow-lift), 0 0 0 2px var(--color-accent) !important;
  background-color: var(--card-bg) !important;
  z-index: 10 !important;
}

[data-theme="dark"] .entry-card.keyboard-focused {
  border-color: var(--color-accent) !important;
  box-shadow: 0 14px 32px -4px rgba(0, 0, 0, 0.7), 0 0 0 2px var(--color-accent) !important;
}

/* 快捷键指南模态背景遮罩 */
.shortcuts-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background-color: rgba(28, 29, 25, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* 快捷键指南卡片 */
.shortcuts-modal-card {
  width: 100%;
  max-width: 680px;
  max-height: 90vh;
  background-color: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-modal);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  animation: modalScaleUp 0.24s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.shortcuts-modal-card::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid var(--border-subtle);
  border-radius: calc(var(--radius-md) - 3px);
  pointer-events: none;
  opacity: 0.75;
}

/* 模态刊头 */
.shortcuts-modal-header {
  padding: 20px 24px 16px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-subtle);
}

.shortcuts-modal-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.shortcuts-modal-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.btn-close-shortcuts {
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.btn-close-shortcuts:hover {
  color: var(--text-main);
  border-color: var(--border-focus);
  background-color: var(--bg-card);
}

/* 模态正文与网格排版 */
.shortcuts-modal-body {
  padding: 20px 24px;
  overflow-y: auto;
  flex: 1;
}

.shortcut-columns-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (max-width: 600px) {
  .shortcut-columns-grid {
    grid-template-columns: 1fr;
  }
}

.shortcut-group-card {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}

.shortcut-group-title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  border-bottom: 1px dashed var(--border-subtle);
  padding-bottom: 6px;
}

.shortcut-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.shortcut-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.8125rem;
}

.shortcut-keys {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.kbd-badge {
  display: inline-block;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-main);
  background-color: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-bottom: 2px solid var(--border-focus);
  border-radius: 4px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
  line-height: 1.2;
}

.shortcut-desc {
  color: var(--text-muted);
  text-align: right;
  font-size: 0.8125rem;
}

/* 模态底部 */
.shortcuts-modal-footer {
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-subtle);
  gap: 16px;
}

.shortcuts-modal-tip {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-faint);
}

.btn-shortcuts-action {
  padding: 7px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-medium);
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
}

[data-theme="dark"] .btn-shortcuts-action {
  color: #171815;
}

.btn-shortcuts-action:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

/* ==========================================================================
   微印记 Toast 提示浮层 (Editorial Micro-Toasts)
   ========================================================================== */
.editorial-toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
  max-width: 360px;
}

.editorial-toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 28px rgba(36, 37, 31, 0.16), 0 1px 3px rgba(0, 0, 0, 0.06);
  animation: toastSlideIn 0.28s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  transition: opacity 0.24s ease, transform 0.24s ease;
}

[data-theme="dark"] .editorial-toast {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05);
}

.editorial-toast.toast-leaving {
  opacity: 0;
  transform: translateY(12px) scale(0.96);
}

.toast-emblem {
  font-size: 1.15rem;
  color: var(--color-accent);
  line-height: 1;
}

.toast-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.toast-title {
  font-family: var(--font-serif);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.toast-sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

@keyframes toastSlideIn {
  0% {
    opacity: 0;
    transform: translateY(16px) scale(0.94);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ==========================================================================
   18. 细节、纪念与文化彩蛋 (Phase 8: Archive Lore & Easter Eggs)
   ========================================================================== */

/* 顶部刊印徽章按钮 */
.btn-colophon-badge {
  background: transparent;
  border: none;
  padding: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  color: inherit;
  transition: opacity var(--transition-fast);
}

.btn-colophon-badge:hover {
  opacity: 0.8;
}

/* 刊头金石印章微勋章 (Stone Seal Milestone Badge) */
.masthead-milestone-slot {
  display: inline-flex;
  align-items: center;
  margin-left: 8px;
}

.milestone-seal-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 1px 7px 1px 5px;
  border-radius: 3px;
  font-family: var(--font-serif);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid currentColor;
  background: transparent;
  transition: all var(--transition-fast);
  line-height: 1.3;
}

.milestone-seal-badge .seal-glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-size: 0.5625rem;
  line-height: 1;
}

/* 朱砂金石印 */
.seal-cinnabar {
  color: #B23A22 !important;
  border-color: #B23A22 !important;
  background-color: rgba(178, 58, 34, 0.08) !important;
}

.seal-cinnabar:hover {
  background-color: rgba(178, 58, 34, 0.16) !important;
  box-shadow: 0 0 8px rgba(178, 58, 34, 0.3);
}

/* 青玉古印 */
.seal-jade {
  color: #2F6153 !important;
  border-color: #2F6153 !important;
  background-color: rgba(47, 97, 83, 0.08) !important;
}

.seal-jade:hover {
  background-color: rgba(47, 97, 83, 0.16) !important;
  box-shadow: 0 0 8px rgba(47, 97, 83, 0.3);
}

/* 铜墨印 */
.seal-bronze {
  color: #8C6239 !important;
  border-color: #8C6239 !important;
  background-color: rgba(140, 98, 57, 0.08) !important;
}

.seal-bronze:hover {
  background-color: rgba(140, 98, 57, 0.16) !important;
  box-shadow: 0 0 8px rgba(140, 98, 57, 0.3);
}

/* 馆长手记模态窗 */
.colophon-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background-color: rgba(28, 29, 25, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  animation: fadeIn 0.22s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.colophon-modal-card {
  width: 100%;
  max-width: 740px;
  max-height: 90vh;
  background-color: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-modal);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  animation: modalScaleUp 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.colophon-modal-card::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid var(--border-subtle);
  border-radius: calc(var(--radius-md) - 4px);
  pointer-events: none;
  opacity: 0.8;
}

.colophon-modal-header {
  padding: 22px 28px 18px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-subtle);
}

.colophon-modal-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.colophon-modal-title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.btn-close-colophon {
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.btn-close-colophon:hover {
  color: var(--text-main);
  border-color: var(--border-focus);
  background-color: var(--bg-card);
}

.colophon-modal-body {
  padding: 24px 28px;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

/* 里程碑荣誉卡片 */
.colophon-milestone-card {
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-subtle);
}

.milestone-badge-display {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 8px;
}

.milestone-big-glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 2px solid currentColor;
  border-radius: 4px;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 900;
  line-height: 1;
}

.milestone-stage-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.milestone-title-text {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
}

.milestone-motto {
  margin: 6px 0;
  font-family: var(--font-serif);
  font-size: 0.875rem;
  font-style: italic;
  color: var(--color-accent);
}

.milestone-desc-text {
  margin: 6px 0 10px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.milestone-stats-rail {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-faint);
  border-top: 1px dashed var(--border-subtle);
  padding-top: 8px;
}

.milestone-stats-rail strong {
  color: var(--text-main);
}

/* 馆长序言文章 */
.colophon-letter-section {
  border-left: 3px solid var(--color-accent);
  padding-left: 18px;
}

.colophon-section-title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.colophon-paragraph {
  margin: 0 0 8px;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--text-main);
}

/* 三大核心原则卡片 */
.colophon-pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

@media (max-width: 640px) {
  .colophon-pillars-grid {
    grid-template-columns: 1fr;
  }
}

.colophon-pillar-card {
  padding: 14px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.colophon-pillar-card h4 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 0.875rem;
  color: var(--text-main);
}

.colophon-pillar-card p {
  margin: 0;
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 出版规格参数表格 */
.colophon-specs-table {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}

.specs-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78125rem;
  padding: 4px 0;
  border-bottom: 1px dotted var(--border-subtle);
}

.specs-row:last-child {
  border-bottom: none;
}

.specs-row span:first-child {
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.specs-row span:last-child {
  font-family: var(--font-serif);
  color: var(--text-main);
  font-weight: 500;
}

/* 馆长朱砂钤印区 */
.colophon-seal-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding-top: 10px;
}

.cinnabar-seal-svg {
  color: #B23A22;
  transition: transform 0.3s ease;
}

.cinnabar-seal-svg:hover {
  transform: rotate(2deg) scale(1.05);
}

.colophon-seal-caption {
  font-family: var(--font-serif);
  font-size: 0.75rem;
  color: var(--text-faint);
  letter-spacing: 0.12em;
}

/* 模态底部 */
.colophon-modal-footer {
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-subtle);
  gap: 16px;
}

.colophon-modal-tip {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.btn-colophon-action {
  padding: 7px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-medium);
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
}

[data-theme="dark"] .btn-colophon-action {
  color: #171815;
}

.btn-colophon-action:hover {
  background-color: var(--color-accent-hover);
}

/* ==========================================================================
   404 散佚书卷页面排版 (404 Lost Folio Page)
   ========================================================================== */
.page-404-body {
  min-height: 100vh;
}

.page-404-main {
  padding: 60px 24px 80px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.editorial-404-card {
  max-width: 580px;
  width: 100%;
  text-align: center;
  background-color: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 48px 36px;
  box-shadow: var(--shadow-modal);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.editorial-404-card::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid var(--border-subtle);
  border-radius: calc(var(--radius-md) - 4px);
  pointer-events: none;
  opacity: 0.75;
}

.lost-folio-meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 24px;
}

.lost-folio-crest {
  margin-bottom: 16px;
  color: var(--color-accent);
}

.lost-folio-code {
  font-family: var(--font-serif);
  font-size: 4rem;
  font-weight: 900;
  line-height: 1;
  margin: 0 0 10px;
  letter-spacing: -0.04em;
  color: var(--text-main);
  opacity: 0.9;
}

.lost-folio-headline {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.lost-folio-epigraph {
  margin: 0 0 28px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 440px;
}

.lost-folio-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

.btn-lost-action {
  display: inline-flex;
  align-items: center;
  padding: 9px 22px;
  border-radius: var(--radius-sm);
  font-family: var(--font-serif);
  font-size: 0.875rem;
  text-decoration: none;
  transition: all var(--transition-fast);
  border: 1px solid var(--border-medium);
  background-color: var(--bg-card);
  color: var(--text-main);
}

.btn-lost-action:hover {
  background-color: var(--bg-subtle);
  border-color: var(--border-focus);
}

.btn-lost-action.btn-lost-primary {
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}

[data-theme="dark"] .btn-lost-action.btn-lost-primary {
  color: #171815;
}

.btn-lost-action.btn-lost-primary:hover {
  background-color: var(--color-accent-hover);
}

/* ==========================================================================
   14. 卡片右键菜单与数据导出导入系统 (Context Menu & Overrides System)
   ========================================================================== */

/* 自定义上下文菜单浮层 */
.nav-context-menu {
  position: fixed;
  z-index: 10000;
  min-width: 176px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
  box-shadow: var(--shadow-lift);
  padding: 5px 0;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--text-main);
  user-select: none;
  animation: ctxFadeIn 0.14s ease-out;
}

@keyframes ctxFadeIn {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.ctx-item {
  position: relative;
  display: flex;
  align-items: center;
  padding: 7px 14px;
  color: var(--text-main);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  outline: none;
}

.ctx-item:hover,
.ctx-item.ctx-focused {
  background-color: var(--bg-subtle);
  color: var(--color-accent);
}

.ctx-icon {
  width: 18px;
  margin-right: 8px;
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.ctx-item:hover .ctx-icon,
.ctx-item.ctx-focused .ctx-icon {
  color: var(--color-accent);
}

.ctx-label {
  flex: 1;
  white-space: nowrap;
}

.ctx-arrow {
  margin-left: 12px;
  font-size: 0.6875rem;
  color: var(--text-faint);
}

.ctx-check {
  margin-left: 8px;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-accent);
}

.ctx-divider {
  height: 1px;
  background-color: var(--border-hairline);
  margin: 4px 0;
}

.ctx-danger {
  color: #C0392B !important;
}

.ctx-danger .ctx-icon {
  color: #C0392B !important;
}

.ctx-danger:hover,
.ctx-danger.ctx-focused {
  background-color: rgba(192, 57, 43, 0.08) !important;
  color: #E74C3C !important;
}

[data-theme="dark"] .ctx-danger {
  color: #E74C3C !important;
}

/* 二级菜单 */
.has-submenu {
  position: relative;
}

.ctx-submenu {
  position: absolute;
  left: 100%;
  top: -5px;
  min-width: 160px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
  box-shadow: var(--shadow-lift);
  padding: 4px 0;
  display: none;
}

.has-submenu:hover .ctx-submenu,
.has-submenu:focus-within .ctx-submenu {
  display: block;
}

.nav-context-menu.flip-x .ctx-submenu {
  left: auto;
  right: 100%;
}

/* 模态弹窗基础 */
.editorial-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background-color: rgba(23, 24, 21, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: modalBackdropFadeIn 0.2s ease-out;
}

.editorial-modal-window {
  width: 100%;
  max-width: 520px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
  box-shadow: var(--shadow-lift);
  padding: 24px 28px;
  max-height: 90vh;
  overflow-y: auto;
  animation: modalWindowSlideUp 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

@keyframes modalWindowSlideUp {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.card-edit-modal-window {
  max-width: 520px;
}

.hidden-cards-modal-window {
  max-width: 620px;
}

.editorial-modal-header {
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-hairline);
  padding-bottom: 14px;
}

.modal-badge-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.modal-folio-badge {
  font-family: var(--font-serif);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--color-accent);
}

.modal-folio-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
}

.modal-headline {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  color: var(--text-main);
  margin: 0 0 4px;
  font-weight: 700;
}

.modal-subtitle {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.5;
}

/* 编辑表单 */
.card-edit-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-label {
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  color: var(--text-main);
  font-weight: 600;
  margin-bottom: 5px;
}

.required-star {
  color: #C0392B;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  box-sizing: border-box;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  padding: 8px 10px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--text-main);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 1px var(--border-focus);
  background-color: var(--bg-surface);
}

.form-textarea {
  resize: vertical;
  min-height: 60px;
  line-height: 1.5;
}

.form-row-2col {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 14px;
}

.form-error-tip {
  color: #C0392B;
  font-size: 0.75rem;
  margin-top: 5px;
  font-family: var(--font-sans);
}

.form-actions-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 10px;
  padding-top: 14px;
  border-top: 1px solid var(--border-hairline);
}

.btn-modal-cancel {
  background: transparent;
  border: 1px solid var(--border-hairline);
  padding: 7px 16px;
  border-radius: var(--radius-xs);
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-modal-cancel:hover {
  background-color: var(--bg-subtle);
  color: var(--text-main);
  border-color: var(--border-focus);
}

.btn-modal-primary {
  background-color: var(--color-accent);
  color: #FFFFFF;
  border: 1px solid var(--color-accent);
  padding: 7px 18px;
  border-radius: var(--radius-xs);
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

[data-theme="dark"] .btn-modal-primary {
  color: #171815;
}

.btn-modal-primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

.btn-modal-subtle {
  background: transparent;
  border: 1px dashed var(--border-hairline);
  padding: 6px 14px;
  border-radius: var(--radius-xs);
  color: var(--text-muted);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-modal-subtle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: var(--bg-subtle);
}

/* 隐藏卡片管理列表 */
.hidden-cards-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 360px;
  overflow-y: auto;
  padding-right: 4px;
  margin-bottom: 16px;
}

.hidden-card-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  gap: 12px;
}

.hidden-card-info {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
  flex: 1;
}

.hidden-emblem {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  flex-shrink: 0;
}

.hidden-texts {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.hidden-name {
  font-size: 0.875rem;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hidden-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.6875rem;
  color: var(--text-faint);
}

.hidden-cat-badge {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  padding: 1px 4px;
  border-radius: var(--radius-xs);
}

.hidden-url {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 220px;
}

.btn-unhide-action {
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  font-size: 0.75rem;
  color: var(--color-accent);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.btn-unhide-action:hover {
  background-color: var(--color-accent-soft);
  border-color: var(--color-accent);
}

.hidden-cards-empty {
  text-align: center;
  padding: 36px 16px;
  color: var(--text-muted);
  font-family: var(--font-serif);
}

.empty-leaf-icon {
  font-size: 1.75rem;
  margin-bottom: 8px;
  display: block;
  opacity: 0.7;
}

.hidden-modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-hairline);
}

/* 页脚导出与修改小提示 */
.footer-export-action-btn {
  background: transparent;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  padding: 2px 8px;
  cursor: pointer;
  margin-left: 6px;
  transition: all var(--transition-fast);
}

.footer-export-action-btn:hover {
  background-color: var(--bg-subtle);
  border-color: var(--border-focus);
  color: var(--text-main);
}

.footer-overrides-note {
  margin-top: 6px;
  font-family: var(--font-serif);
  font-size: 0.75rem;
  color: var(--color-accent);
  animation: fadeIn 0.3s ease;
}

.footer-overrides-note strong {
  font-family: var(--font-mono);
  font-weight: 700;
}

.btn-text-link {
  background: none;
  border: none;
  color: var(--color-accent);
  text-decoration: underline;
  cursor: pointer;
  padding: 0 4px;
  font-family: inherit;
  font-weight: 600;
  font-size: inherit;
}

.btn-text-link:hover {
  color: var(--color-accent-hover);
}

/* ==========================================================================
   Phase 3A · A7 astronomy, D6 soundscape, D3 brass instruments
   ========================================================================== */

.mobile-phase3-actions {
  display: none;
}

.soundscape-switch-btn {
  position: relative;
}

.soundscape-switch-btn .soundscape-icon {
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  line-height: 1;
}

.soundscape-switch-btn[data-state="active"],
.soundscape-switch-btn[data-state="pending"] {
  color: var(--accent-brass);
}

.soundscape-switch-btn[data-state="active"] .soundscape-icon {
  animation: soundscapeBrassBreath 3.2s ease-in-out infinite;
}

.soundscape-switch-btn[data-state="pending"] {
  opacity: 0.78;
}

.soundscape-switch-btn[data-state="active"]::before {
  content: "";
  position: absolute;
  inset: 3px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 30%, transparent);
  opacity: 0.6;
  pointer-events: none;
  animation: soundscapeBrassRing 3.2s ease-in-out infinite;
}

@keyframes soundscapeBrassBreath {
  0%, 100% { opacity: 0.62; text-shadow: 0 0 0 transparent; }
  50% { opacity: 1; text-shadow: 0 0 9px color-mix(in srgb, var(--accent-brass) 48%, transparent); }
}

@keyframes soundscapeBrassRing {
  0%, 100% { opacity: 0.25; transform: scale(0.94); }
  50% { opacity: 0.68; transform: scale(1); }
}

.spine-brass-entry {
  margin-top: 8px;
  margin-bottom: 8px;
}

.spine-astronomy-line {
  color: var(--accent-brass);
  font-size: 0.5625rem;
  letter-spacing: 0.015em;
  white-space: nowrap;
}

.spine-moon-phase {
  font-size: 0.5625rem;
  color: var(--text-muted);
  white-space: nowrap;
}

[data-theme="dark"] .spine-astronomy-line {
  color: var(--accent-brass);
  text-shadow: 0 0 10px color-mix(in srgb, var(--accent-brass) 26%, transparent);
}

.brass-tools-backdrop {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(10, 9, 7, 0.52);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
}

.brass-tools-backdrop[hidden],
.brass-workbench[hidden] {
  display: none;
}

.brass-workbench {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 310;
  display: flex;
  flex-direction: column;
  width: min(600px, 100vw);
  height: 100dvh;
  border-left: 1px solid var(--accent-brass);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--bg-page) 96%, transparent), color-mix(in srgb, var(--bg-subtle) 94%, transparent)),
    repeating-linear-gradient(90deg, transparent 0 47px, color-mix(in srgb, var(--accent-brass) 8%, transparent) 47px 48px);
  box-shadow: -28px 0 70px -28px rgba(0, 0, 0, 0.72);
  animation: brassDrawerIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.brass-workbench::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 26%, transparent);
  pointer-events: none;
}

@keyframes brassDrawerIn {
  from { opacity: 0; transform: translateX(42px); }
  to { opacity: 1; transform: translateX(0); }
}

.brass-workbench-header {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 25px 26px 17px;
  border-bottom: 1px solid var(--border-hairline);
}

.brass-workbench-kicker {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.12em;
}

.brass-workbench-header h2 {
  margin-top: 5px;
  color: var(--text-main);
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 600;
}

.brass-workbench-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
}

.brass-workbench-close:hover {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

.brass-workbench-tabs {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-bottom: 1px solid var(--border-hairline);
}

.brass-workbench-tabs button {
  min-height: 46px;
  border: 0;
  border-right: 1px solid var(--border-hairline);
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  cursor: pointer;
}

.brass-workbench-tabs button:last-child {
  border-right: 0;
}

.brass-workbench-tabs button.is-active {
  border-bottom-color: var(--accent-brass);
  color: var(--accent-brass);
  background: color-mix(in srgb, var(--accent-brass) 7%, transparent);
}

.brass-workbench-body {
  position: relative;
  z-index: 1;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 20px 26px 26px;
}

.brass-panel[hidden] {
  display: none;
}

.brass-panel-intro {
  margin-bottom: 17px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--border-hairline);
}

.brass-panel-code {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.12em;
}

.brass-panel-intro p {
  margin-top: 6px;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.75rem;
  line-height: 1.65;
}

.brass-dial-grid {
  display: grid;
  gap: 9px;
}

.brass-dial {
  position: relative;
  display: grid;
  gap: 6px;
  min-height: 92px;
  padding: 15px 16px;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 44%, var(--border-hairline));
  border-radius: 50% / 18%;
  background:
    radial-gradient(circle at 92% 18%, color-mix(in srgb, var(--accent-brass) 13%, transparent), transparent 34%),
    color-mix(in srgb, var(--bg-surface) 72%, transparent);
}

.brass-dial::after {
  content: "";
  position: absolute;
  right: 13px;
  bottom: 8px;
  width: 56px;
  height: 18px;
  opacity: 0.42;
  background: repeating-linear-gradient(90deg, var(--accent-brass) 0 1px, transparent 1px 6px);
}

.brass-dial-label {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.08em;
}

.brass-dial strong {
  align-self: end;
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 400;
  line-height: 1.55;
  word-break: break-word;
}

.brass-panel-actions,
.brass-cipher-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  margin-top: 12px;
}

.brass-action {
  min-height: 30px;
  padding: 4px 10px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  cursor: pointer;
}

.brass-action:hover,
.brass-action-primary {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

.brass-action-primary {
  background: color-mix(in srgb, var(--accent-brass) 7%, transparent);
}

.brass-status {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  line-height: 1.55;
}

.brass-status.is-error {
  color: var(--accent-stamp);
}

.brass-mode-row {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 12px;
}

.brass-mode-row button {
  min-height: 28px;
  padding: 3px 9px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  cursor: pointer;
}

.brass-mode-row button.is-active {
  border-color: var(--accent-brass);
  background: color-mix(in srgb, var(--accent-brass) 8%, transparent);
  color: var(--accent-brass);
}

.brass-field {
  display: grid;
  gap: 5px;
  margin-bottom: 10px;
}

.brass-field > span {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.07em;
}

.brass-field textarea,
.brass-field input {
  width: 100%;
  border: 1px solid var(--border-card);
  border-radius: 0;
  background: color-mix(in srgb, var(--bg-surface) 78%, transparent);
  color: var(--text-main);
  padding: 9px 10px;
  font: 0.6875rem/1.6 var(--font-mono);
  resize: vertical;
}

.brass-field textarea:focus,
.brass-field input:focus {
  outline: 0;
  border-color: var(--accent-brass);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-brass) 12%, transparent);
}

.brass-cipher-actions {
  margin-top: 0;
  margin-bottom: 11px;
}

.brass-clock-now {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 40%, var(--border-hairline));
  background: color-mix(in srgb, var(--bg-surface) 62%, transparent);
}

.brass-clock-now strong {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
}

.brass-conversion-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0 8px;
  margin-top: 12px;
}

.brass-conversion-grid .brass-action {
  align-self: end;
  margin-bottom: 10px;
}

.brass-hash-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 5px;
}

.brass-workbench-footer {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 26px;
  border-top: 1px solid var(--border-hairline);
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.05em;
}

[data-theme="dark"] .brass-workbench {
  background:
    linear-gradient(135deg, color-mix(in srgb, #111925 96%, transparent), color-mix(in srgb, #0d141e 95%, transparent)),
    repeating-linear-gradient(90deg, transparent 0 47px, color-mix(in srgb, var(--accent-brass) 5%, transparent) 47px 48px);
}

@media (max-width: 900px) {
  .mobile-phase3-actions {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 4px;
    margin-left: 0;
  }

  .mobile-phase3-btn {
    min-height: 32px;
    padding: 4px 6px;
    border: 1px solid var(--border-hairline);
    background: transparent;
    color: var(--accent-brass);
    font-family: var(--font-serif);
    font-size: 0.625rem;
    line-height: 1;
    white-space: nowrap;
    cursor: pointer;
  }

  .mobile-phase3-btn span {
    margin-right: 2px;
    font-family: var(--font-mono);
  }

  .spine-brass-entry {
    display: none;
  }

  .spine-colophon {
    display: none;
  }

  .spine-colophon > span:last-child {
    display: none;
  }

  .spine-astronomy-line {
    font-size: 0.5rem;
  }
}

@media (max-width: 640px) {
  .folio-search-bar {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "search";
    row-gap: 3px;
    height: auto;
    min-height: 52px;
    flex-wrap: nowrap;
    align-items: center;
    overflow-x: visible;
  }

  .folio-search-bar .archive-search-section {
    flex: 1 1 auto;
    min-width: 0;
    padding-right: 0;
  }

  .mobile-phase3-actions {
    width: 100%;
    flex: 0 0 auto;
    justify-content: flex-start;
    padding: 3px 0;
    border-top: 0;
  }

  .soundscape-switch-btn .soundscape-label {
    display: none;
  }

  .brass-workbench {
    width: 100vw;
  }

  .brass-workbench-header,
  .brass-workbench-body,
  .brass-workbench-footer {
    padding-left: 16px;
    padding-right: 16px;
  }

  .brass-workbench-tabs button {
    padding: 4px;
    font-size: 0.6875rem;
  }

  .brass-conversion-grid {
    grid-template-columns: 1fr;
  }

  .brass-conversion-grid .brass-action {
    justify-self: start;
    margin-top: 0;
  }

  .brass-hash-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 390px) {
  .top-colophon-bar {
    height: var(--header-height);
    min-height: var(--header-height);
    padding: 0 10px;
    gap: 4px;
  }

  .colophon-right {
    min-width: 0;
    flex-wrap: nowrap;
    justify-content: flex-end;
    gap: 0;
    margin-left: auto;
  }

  .colophon-right .theme-switch-btn {
    min-width: 28px;
    min-height: 32px;
    padding: 4px 3px;
  }

  .top-colophon-bar .colophon-right .theme-switch-btn {
    min-width: 34px;
  }

  .colophon-right .theme-switch-btn + .theme-switch-btn::before {
    display: none;
  }
}

@media (max-width: 440px) {
  .mobile-phase3-actions {
    justify-content: flex-end;
  }

  .mobile-phase3-btn {
    flex: 0 0 auto;
    justify-content: center;
    min-width: 0;
    padding: 4px 5px;
  }

  .spine-colophon {
    display: none;
  }

  .spine-colophon-rule {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .soundscape-switch-btn[data-state="active"] .soundscape-icon,
  .soundscape-switch-btn[data-state="active"]::before {
    animation: none;
  }

  .brass-workbench {
    animation: none;
  }
}

/* --------------------------------------------------------------------------
   Phase 3B · D4 星轨编年史 / C6 穹顶星图
   -------------------------------------------------------------------------- */

.folio-view-switcher {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 2px;
  margin-right: 12px;
  padding-right: 12px;
  border-right: 1px solid var(--border-hairline);
  font-family: var(--font-serif);
}

.folio-view-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 34px;
  padding: 5px 7px;
  border: 0;
  background: transparent;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.625rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.folio-view-btn:hover,
.folio-view-btn:focus-visible,
.folio-view-btn.is-active {
  color: var(--accent-brass);
  background: color-mix(in srgb, var(--bg-subtle) 46%, transparent);
}

.folio-view-btn.is-active {
  box-shadow: inset 0 -1px var(--accent-brass);
}

.folio-view-divider {
  color: var(--border-hairline);
  font-family: var(--font-mono);
  font-size: 0.625rem;
}

.almanac-status-switch {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1px 7px;
  margin-top: 2px;
}

.almanac-window-btn {
  padding: 1px 0;
  border: 0;
  background: transparent;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.5625rem;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.almanac-window-btn:hover,
.almanac-window-btn:focus-visible,
.almanac-window-btn.is-active {
  color: var(--accent-brass);
}

.almanac-window-btn.is-active {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.search-hook-btn--almanac {
  color: var(--accent-brass);
}

.entry-card {
  transition:
    opacity 0.28s ease,
    border-color 0.25s ease,
    background-color 0.25s ease,
    box-shadow 0.25s ease,
    transform 0.25s ease;
}

.entry-card.is-time-dimmed {
  opacity: 0.25 !important;
}

.entry-card.almanac-day-highlight {
  border-color: var(--accent-brass) !important;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent-brass) 42%, transparent);
}

.almanac-chronicle {
  position: relative;
  z-index: 2;
  margin: 0;
  padding: 18px 0 64px;
  scroll-margin-top: calc(var(--header-height) + 72px);
}

.almanac-chronicle.is-star-map {
  display: none;
}

.almanac-chronicle-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-hairline);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--bg-surface) 94%, transparent), color-mix(in srgb, var(--bg-subtle) 72%, transparent)),
    repeating-linear-gradient(90deg, transparent 0 47px, color-mix(in srgb, var(--accent-brass) 5%, transparent) 47px 48px);
}

.almanac-chronicle-frame::before,
.almanac-chronicle-frame::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.almanac-chronicle-frame::before {
  inset: 7px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 22%, transparent);
}

.almanac-chronicle-frame::after {
  top: -120px;
  right: -90px;
  width: 300px;
  height: 300px;
  border: 1px dotted var(--border-hairline);
  border-radius: 50%;
  opacity: 0.6;
}

.almanac-chronicle-header,
.almanac-chronicle-body {
  position: relative;
  z-index: 1;
}

.almanac-chronicle-header {
  display: flex;
  justify-content: space-between;
  gap: 25px;
  align-items: flex-end;
  padding: 28px 30px 20px;
  border-bottom: 1px solid var(--border-hairline);
}

.almanac-heading {
  max-width: 610px;
}

.almanac-kicker,
.almanac-block-label,
.almanac-note-kicker,
.almanac-grid-head {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.14em;
  line-height: 1.5;
}

.almanac-title {
  margin: 5px 0 4px;
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2vw, 1.85rem);
  font-weight: 600;
  letter-spacing: -0.035em;
}

.almanac-subtitle {
  max-width: 600px;
  margin: 0;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.6875rem;
  line-height: 1.8;
}

.almanac-stats {
  display: flex;
  gap: 22px;
  flex: 0 0 auto;
  padding-bottom: 2px;
}

.almanac-stats div {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 58px;
}

.almanac-stats strong {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 400;
}

.almanac-stats span {
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.5625rem;
}

.almanac-chronicle-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(180px, 228px);
  gap: 24px;
  padding: 22px 30px 28px;
}

.almanac-grid-wrap {
  min-width: 0;
}

.almanac-grid-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  color: var(--text-faint);
}

.almanac-lunar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 5px;
}

.almanac-day {
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-width: 0;
  min-height: 72px;
  padding: 6px 4px 5px;
  overflow: hidden;
  border: 1px solid var(--border-hairline);
  border-radius: 0;
  background: color-mix(in srgb, var(--bg-surface) 56%, transparent);
  color: var(--text-faint);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast);
}

.almanac-day:hover,
.almanac-day:focus-visible {
  z-index: 1;
  border-color: var(--accent-brass);
  background: color-mix(in srgb, var(--accent-brass) 8%, var(--bg-surface));
  transform: translateY(-2px);
  outline: 0;
}

.almanac-day.is-today {
  border-color: color-mix(in srgb, var(--accent-brass) 60%, var(--border-hairline));
}

.almanac-day.is-selected {
  border-color: var(--accent-brass);
  box-shadow: inset 0 0 0 1px var(--accent-brass);
}

.almanac-day-label,
.almanac-day-week,
.almanac-day-count {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 0.4375rem;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.almanac-day-label {
  color: var(--text-muted);
}

.almanac-day-week {
  align-self: end;
  color: var(--text-faint);
  font-family: var(--font-serif);
}

.almanac-day-count {
  position: absolute;
  right: 5px;
  bottom: 5px;
  color: var(--accent-brass);
  font-size: 0.5rem;
}

.almanac-moon-svg {
  align-self: center;
  justify-self: center;
  width: 37px;
  height: 37px;
  overflow: visible;
}

.almanac-moon-svg--dark {
  opacity: 0.25;
}

.moon-dark-dot {
  fill: var(--accent-brass);
}

.moon-dark-cross {
  fill: none;
  stroke: var(--accent-brass);
  stroke-width: 0.7;
}

.moon-orbit {
  fill: color-mix(in srgb, var(--accent-brass) 5%, transparent);
  stroke: var(--accent-brass);
  stroke-width: 0.8;
  opacity: 0.48;
}

.moon-crescent {
  fill: var(--accent-brass);
  opacity: 0.82;
}

.moon-half {
  fill: var(--accent-brass);
  opacity: 0.72;
}

.moon-rim {
  fill: color-mix(in srgb, var(--accent-brass) 9%, transparent);
  stroke: var(--accent-brass);
  stroke-width: 0.8;
}

.moon-halo {
  fill: color-mix(in srgb, var(--accent-brass) 13%, transparent);
  stroke: var(--accent-brass);
  stroke-width: 0.55;
  stroke-dasharray: 1 3;
}

.moon-disc {
  fill: var(--accent-brass);
}

.moon-ray {
  fill: none;
  stroke: var(--accent-brass);
  stroke-width: 0.8;
  opacity: 0.72;
}

.moon-tick {
  fill: var(--accent-brass);
}

.almanac-side-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  padding-left: 18px;
  border-left: 1px solid var(--border-hairline);
}

.almanac-window-block {
  display: grid;
  gap: 6px;
}

.almanac-window-list {
  display: grid;
  gap: 3px;
  justify-items: start;
}

.almanac-window-list .almanac-window-btn {
  font-size: 0.625rem;
}

.almanac-note {
  display: grid;
  gap: 7px;
  min-height: 112px;
  padding: 12px 12px 11px;
  border: 1px dashed var(--border-hairline);
  background:
    repeating-linear-gradient(0deg, transparent 0 20px, color-mix(in srgb, var(--border-hairline) 35%, transparent) 20px 21px);
}

.almanac-note-text {
  margin: 0;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.6875rem;
  line-height: 1.75;
}

.almanac-note-text strong {
  color: var(--text-main);
  font-weight: 600;
}

.almanac-note-text em {
  color: var(--accent-brass);
  font-style: normal;
}

.almanac-note-meta {
  align-self: end;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
}

.almanac-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
}

.almanac-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.legend-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-brass);
}

.legend-dot--0 {
  opacity: 0.25;
}

.star-map-container {
  position: relative;
  z-index: 2;
  min-height: 640px;
  margin: 0;
  padding: 0 0 48px;
}

.star-map-shell {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-hairline);
  background:
    radial-gradient(circle at 50% 42%, color-mix(in srgb, var(--accent-brass) 7%, transparent), transparent 37%),
    linear-gradient(135deg, var(--bg-surface), var(--bg-page));
}

.star-map-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  padding: 25px 28px 18px;
  border-bottom: 1px solid var(--border-hairline);
}

.star-map-heading {
  max-width: 650px;
}

.star-map-kicker {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.12em;
}

.star-map-title {
  margin: 5px 0 4px;
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 2vw, 1.85rem);
  font-weight: 600;
  letter-spacing: -0.035em;
}

.star-map-subtitle {
  margin: 0;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.6875rem;
  line-height: 1.75;
}

.star-map-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 0 0 auto;
}

.star-map-legend {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.star-map-reset {
  padding: 4px 7px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 0.625rem;
  white-space: nowrap;
  cursor: pointer;
}

.star-map-reset:hover,
.star-map-reset:focus-visible {
  border-color: var(--accent-brass);
  outline: 0;
}

.star-map-filter-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 3px 8px;
  padding: 8px 28px;
  border-bottom: 1px solid var(--border-hairline);
}

.star-filter-btn {
  padding: 2px 0;
  border: 0;
  background: transparent;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.03em;
  cursor: pointer;
}

.star-filter-btn:hover,
.star-filter-btn:focus-visible,
.star-filter-btn.is-active {
  color: var(--accent-brass);
  outline: 0;
}

.star-filter-btn.is-active {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.star-map-drag-hint {
  margin-left: auto;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.5625rem;
}

.star-map-canvas-wrap {
  position: relative;
  min-height: 560px;
  background:
    linear-gradient(90deg, transparent 49.95%, var(--border-hairline) 49.95% 50.05%, transparent 50.05%),
    linear-gradient(0deg, transparent 49.95%, var(--border-hairline) 49.95% 50.05%, transparent 50.05%);
  background-size: 100% 100%;
}

.star-map-canvas {
  display: block;
  width: 100%;
  min-height: 560px;
  touch-action: none;
}

.star-map-legend-rail {
  position: absolute;
  left: 17px;
  bottom: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px 12px;
  max-width: calc(100% - 35px);
  padding: 6px 8px;
  border: 1px solid var(--border-hairline);
  background: color-mix(in srgb, var(--bg-surface) 86%, transparent);
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  pointer-events: none;
}

.star-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.star-legend-line {
  width: 19px;
  height: 0;
  border-top: 1px solid var(--accent-brass);
}

.star-legend-line--resonance {
  border-top-style: dashed;
  border-color: color-mix(in srgb, var(--accent-stamp) 68%, var(--accent-brass));
}

.star-legend-line--constellation {
  border-top-style: dotted;
  border-color: var(--accent-brass);
}

.star-map-preview {
  position: absolute;
  top: 16px;
  right: 16px;
  width: min(238px, calc(100% - 32px));
  min-height: 160px;
  padding: 13px 15px 14px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 62%, var(--border-hairline));
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--bg-surface) 96%, transparent), color-mix(in srgb, var(--bg-subtle) 86%, transparent));
  box-shadow: 0 12px 30px -20px rgba(0, 0, 0, 0.6);
  pointer-events: none;
}

.star-map-preview:not(.is-populated) {
  opacity: 0;
  visibility: hidden;
}

.star-map-preview.is-populated {
  pointer-events: auto;
}

.star-map-preview::before {
  content: "EX LIBRIS";
  position: absolute;
  top: 8px;
  right: 12px;
  color: color-mix(in srgb, var(--accent-brass) 50%, transparent);
  font-family: var(--font-mono);
  font-size: 0.4375rem;
  letter-spacing: 0.12em;
}

.star-preview-kicker {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.4375rem;
  letter-spacing: 0.1em;
}

.star-preview-call {
  display: block;
  margin: 12px 0 4px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
}

.star-preview h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.4;
}

.star-preview-domain {
  margin: 2px 0 8px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.4375rem;
  letter-spacing: 0.04em;
}

.star-preview-desc {
  display: -webkit-box;
  overflow: hidden;
  margin: 0 0 8px;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.625rem;
  line-height: 1.7;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.star-preview-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 3px 5px;
  margin-bottom: 10px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.4375rem;
}

.star-preview-visit {
  padding: 4px 0;
  border: 0;
  border-bottom: 1px solid var(--accent-brass);
  background: transparent;
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 0.625rem;
  cursor: pointer;
}

.star-preview-empty {
  display: grid;
  place-items: center;
  min-height: 134px;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.625rem;
  line-height: 1.8;
  text-align: center;
}

.star-preview-empty span {
  color: var(--accent-brass);
  font-size: 1.2rem;
}

.star-preview-empty p {
  max-width: 170px;
  margin: 5px 0 0;
}

.star-map-coordinate {
  position: absolute;
  top: 12px;
  left: 17px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.4375rem;
  letter-spacing: 0.09em;
  pointer-events: none;
}

@media (max-width: 1050px) {
  .folio-view-btn {
    padding-inline: 4px;
    font-size: 0.5625rem;
  }

  .almanac-chronicle-header,
  .almanac-chronicle-body {
    padding-left: 22px;
    padding-right: 22px;
  }

  .almanac-chronicle-body {
    grid-template-columns: minmax(0, 1fr) 190px;
    gap: 16px;
  }
}

@media (max-width: 900px) {
  .folio-search-bar {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "search";
    align-items: center;
    flex-wrap: nowrap;
    height: auto;
    min-height: 52px;
    padding-top: 3px;
    padding-bottom: 3px;
  }

  .folio-view-switcher {
    grid-area: views;
    order: -1;
    width: 100%;
    justify-content: flex-start;
    margin: 0 0 2px;
    padding: 0 0 3px;
    border-right: 0;
    border-bottom: 1px solid var(--border-hairline);
  }

  .folio-view-btn {
    min-height: 31px;
  }

  .folio-search-bar .archive-search-section {
    grid-area: search;
    width: 100%;
    min-width: 0;
    padding-right: 0;
  }

  .mobile-phase3-actions {
    order: 2;
    width: 100%;
    min-width: 0;
    justify-content: flex-start;
    padding: 3px 0;
    border-top: 0;
  }

  .folio-search-meta {
    display: none;
  }

  .almanac-chronicle {
    padding-bottom: 44px;
  }

  .almanac-chronicle-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 13px;
    padding: 22px 20px 16px;
  }

  .almanac-stats {
    gap: 18px;
  }

  .almanac-chronicle-body {
    display: block;
    padding: 18px 20px 22px;
  }

  .almanac-side-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
    gap: 12px;
    margin-top: 16px;
    padding: 14px 0 0;
    border-top: 1px solid var(--border-hairline);
    border-left: 0;
  }

  .almanac-legend {
    grid-column: 1 / -1;
  }

  .almanac-day {
    min-height: 64px;
  }

  .almanac-moon-svg {
    width: 31px;
    height: 31px;
  }

  .star-map-container {
    min-height: 480px;
  }

  .star-map-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding: 22px 20px 15px;
  }

  .star-map-actions {
    width: 100%;
    justify-content: space-between;
  }

  .star-map-filter-row {
    padding: 8px 20px;
  }

  .star-map-canvas-wrap,
  .star-map-canvas {
    min-height: 480px;
  }

  .star-map-canvas {
    min-height: 0 !important;
  }

  .star-map-preview {
    top: 10px;
    right: 10px;
  }
}

@media (max-width: 640px) {
  .folio-view-switcher {
    gap: 0;
  }

  .folio-view-btn span:last-child {
    font-size: 0.5625rem;
  }

  .almanac-status-switch {
    display: none;
  }

  .almanac-lunar-grid {
    gap: 3px;
  }

  .almanac-day {
    min-height: 56px;
    padding: 4px 2px;
  }

  .almanac-day-label,
  .almanac-day-week {
    font-size: 0.375rem;
  }

  .almanac-day-count {
    right: 3px;
    bottom: 3px;
    font-size: 0.4375rem;
  }

  .almanac-moon-svg {
    width: 27px;
    height: 27px;
  }

  .almanac-side-panel {
    grid-template-columns: 1fr;
  }

  .almanac-note {
    min-height: 0;
  }

  .almanac-legend {
    grid-column: auto;
  }

  .star-map-header {
    padding-left: 16px;
    padding-right: 16px;
  }

  .star-map-legend {
    white-space: normal;
  }

  .star-map-filter-row {
    padding-left: 16px;
    padding-right: 16px;
  }

  .star-map-drag-hint {
    width: 100%;
    margin-left: 0;
  }

  .star-map-preview {
    top: auto;
    right: 10px;
    bottom: 45px;
    width: min(220px, calc(100% - 20px));
  }

  .star-map-preview.is-populated {
    max-height: 186px;
    overflow-y: auto;
  }

  .star-map-canvas-wrap,
  .star-map-canvas {
    min-height: 480px;
  }

  .star-map-canvas {
    min-height: 0 !important;
  }

  .star-map-legend-rail {
    left: 10px;
    bottom: 10px;
    max-width: calc(100% - 20px);
    font-size: 0.4375rem;
  }
}

@media (max-width: 390px) {
  .folio-search-bar .folio-view-switcher {
    margin-bottom: 1px;
  }

  .almanac-chronicle-header {
    padding-left: 14px;
    padding-right: 14px;
  }

  .almanac-chronicle-body {
    padding-left: 14px;
    padding-right: 14px;
  }

  .almanac-day {
    min-height: 52px;
  }

  .almanac-moon-svg {
    width: 24px;
    height: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .almanac-day,
  .star-map-reset,
  .star-filter-btn,
  .folio-view-btn {
    transition: none;
  }
}

/* ==========================================================================
   Phase 4A · D1 守馆人 AI（司天监终端）· A5 星轨探针 · C4 遥测机关台
   ========================================================================== */

/* --------------------------------------------------------------------------
   Phase 4A · D1 司天监羊皮纸批注浮层（双线边框古典批注纸）
   -------------------------------------------------------------------------- */
.librarian-parchment-folio {
  position: absolute;
  top: calc(100% + 5px);
  right: 16px;
  left: 0;
  z-index: 95;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  width: auto;
  max-width: 100%;
  max-height: min(62vh, 560px);
  overflow-x: hidden;
  overflow-y: auto;
  border: 1px solid var(--border-medium);
  border-top: 2px solid var(--accent-brass);
  /* The sheet overlays live cards, so the paper base must be fully opaque;
     only the wash and ruling layers carry transparency. */
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--bg-subtle) 56%, transparent), transparent 42%),
    repeating-linear-gradient(0deg, transparent 0 25px, color-mix(in srgb, var(--border-hairline) 62%, transparent) 25px 26px),
    var(--bg-surface);
  box-shadow: 0 22px 48px -20px rgba(0, 0, 0, 0.62), var(--shadow-lift);
  animation: librarianFolioUnfurl 0.26s var(--transition-normal);
}

/* When the search bar sits low in the viewport (or the sheet is tall), flip the
   sheet above the bar so the badge and the action rail stay reachable. */
.librarian-parchment-folio.is-flip-up {
  top: auto;
  bottom: calc(100% + 5px);
  border-top: 1px solid var(--border-medium);
  border-bottom: 2px solid var(--accent-brass);
}

.librarian-parchment-folio[hidden] {
  display: none;
}

/* 内层双线：古籍批注纸的实心细线内框 */
.librarian-parchment-folio::before {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 22%, transparent);
  pointer-events: none;
}

@keyframes librarianFolioUnfurl {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.librarian-folio-head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  flex-shrink: 0;
  gap: 8px;
  padding: 11px 13px 9px;
  border-bottom: 1px dashed var(--border-hairline);
}

.librarian-mode-badge {
  flex-shrink: 0;
  padding: 2px 8px;
  border: 1px solid var(--accent-brass);
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.08em;
}

.librarian-mode-badge[data-librarian-mode="!"] {
  border-color: var(--accent-stamp);
  color: var(--accent-stamp);
}

.librarian-folio-kicker {
  min-width: 0;
  overflow: hidden;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.1em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.librarian-folio-head-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.librarian-head-btn {
  flex-shrink: 0;
  padding: 3px 8px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.librarian-head-btn:hover {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

.librarian-head-btn--close {
  width: 24px;
  padding: 3px 0;
  text-align: center;
}

.librarian-folio-output {
  position: relative;
  z-index: 1;
  /* min-height: 0 lets the scroll area give way inside the flex column so the
     max-height cap actually binds and the action rail stays visible. */
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
  padding: 12px 14px 4px;
  color: var(--text-main);
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  line-height: 1.72;
  overflow-wrap: anywhere;
  word-break: break-word;
  /* The annotation scrolls on its own instead of being squeezed under the
     recommendation strip: long answers stay readable, the rail stays reachable. */
  overflow-y: auto;
  overscroll-behavior: contain;
}

.librarian-para {
  margin-bottom: 9px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.librarian-para:last-child {
  margin-bottom: 0;
}

.librarian-para--hint {
  color: var(--text-faint);
  font-style: italic;
}

/* 代码块：内部可横向滚动，但绝不撑开浮层与页面 */
.librarian-code {
  box-sizing: border-box;
  max-width: 100%;
  margin: 8px 0;
  padding: 9px 11px;
  overflow-x: auto;
  border: 1px solid var(--border-hairline);
  border-left: 2px solid var(--accent-brass);
  background: color-mix(in srgb, var(--bg-page) 88%, transparent);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  line-height: 1.6;
  white-space: pre;
  -webkit-overflow-scrolling: touch;
}

.librarian-code code {
  font-family: inherit;
}

/* 微缩藏书票推荐条 */
.librarian-folio-cards {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  flex-shrink: 0;
  gap: 7px;
  box-sizing: border-box;
  max-width: 100%;
  padding: 10px 14px 4px;
  border-top: 1px dashed var(--border-hairline);
  margin-top: 8px;
}

.librarian-folio-cards[hidden] {
  display: none;
}

/* The folio is a flex column capped by max-height, so the recommendation strip
   must yield space to the annotation above it. Without this the grid keeps its
   intrinsic row height and the (scrollable) output box gets squeezed until the
   annotation appears to overlap the slips. */
.librarian-folio-cards {
  flex: 0 1 auto;
  min-height: 0;
  max-height: 46%;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.librarian-card-slip {
  position: relative;
  display: grid;
  gap: 4px;
  min-width: 0;
  padding: 9px 10px 10px;
  border: 1px solid var(--border-hairline);
  background: color-mix(in srgb, var(--bg-subtle) 34%, transparent);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.librarian-card-slip:hover {
  border-color: var(--accent-brass);
  background: color-mix(in srgb, var(--bg-subtle) 52%, transparent);
}

.librarian-card-stamp {
  justify-self: start;
  padding: 1px 5px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 42%, transparent);
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.06em;
}

.librarian-card-slip[data-librarian-status="uncatalogued"] .librarian-card-stamp {
  border-style: dashed;
  border-color: color-mix(in srgb, var(--accent-stamp) 52%, transparent);
  color: var(--accent-stamp);
}

.librarian-card-open {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 6px;
  align-items: baseline;
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--text-main);
  text-align: left;
  cursor: pointer;
}

.librarian-card-number {
  color: var(--card-index-ink);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
}

.librarian-card-title {
  overflow: hidden;
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.librarian-card-open:hover .librarian-card-title {
  color: var(--accent-brass);
}

.librarian-card-host {
  grid-column: 2 / 3;
  overflow: hidden;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.04em;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.librarian-card-arrow {
  grid-row: 1 / 3;
  grid-column: 3 / 4;
  align-self: center;
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  opacity: 0.72;
}

.librarian-card-reason {
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.6875rem;
  font-style: italic;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.librarian-card-crown {
  justify-self: start;
  padding: 2px 7px;
  border: 1px dashed color-mix(in srgb, var(--accent-stamp) 52%, transparent);
  background: transparent;
  color: var(--accent-stamp);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  cursor: pointer;
}

.librarian-card-crown:hover {
  border-style: solid;
  color: var(--text-main);
}

.librarian-folio-foot {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  flex-shrink: 0;
  gap: 8px;
  padding: 9px 13px 11px;
  border-top: 1px dashed var(--border-hairline);
  margin-top: 6px;
}

.librarian-folio-status {
  min-width: 0;
  flex: 1 1 120px;
  overflow: hidden;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.05em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.librarian-folio-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-left: auto;
}

.librarian-action-btn {
  padding: 4px 9px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.librarian-action-btn:hover {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

.librarian-action-btn--codex {
  border-color: color-mix(in srgb, var(--accent-brass) 46%, transparent);
  color: var(--accent-brass);
}

.librarian-action-btn--ghost {
  border-color: transparent;
  color: var(--text-faint);
}

/* 司天监密钥浮层开启时，检索框聚焦态改为黄铜色，明确模式切换 */
html[data-librarian="open"] .search-box-frame {
  border-color: var(--accent-brass);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-brass) 14%, transparent);
}

html[data-librarian="open"] .search-glyph {
  color: var(--accent-brass);
}

/* --------------------------------------------------------------------------
   Phase 4A · D1「司天监密钥」本地安全配置弹窗
   -------------------------------------------------------------------------- */
.librarian-config-backdrop {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  padding: 20px;
  background: rgba(8, 7, 11, 0.58);
  backdrop-filter: blur(3px);
}

.librarian-config-card {
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  width: min(560px, 100%);
  max-width: 100%;
  max-height: min(84dvh, 680px);
  overflow-x: hidden;
  overflow-y: auto;
  border: 1px solid var(--border-card);
  border-top: 2px solid var(--accent-brass);
  background: var(--bg-surface);
  box-shadow: var(--shadow-modal);
  animation: modalScaleUp 0.24s cubic-bezier(0.16, 1, 0.3, 1);
}

.librarian-config-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px 13px;
  border-bottom: 1px solid var(--border-hairline);
}

.librarian-config-kicker {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.12em;
}

.librarian-config-head h2 {
  margin-top: 5px;
  font-family: var(--font-serif);
  font-size: 1.35rem;
}

.librarian-config-close {
  width: 30px;
  height: 30px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
}

.librarian-config-body {
  display: grid;
  gap: 10px;
  padding: 15px 20px 6px;
}

.librarian-config-note {
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.75rem;
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.librarian-config-note code {
  padding: 1px 4px;
  background: color-mix(in srgb, var(--bg-subtle) 68%, transparent);
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
}

.librarian-config-field {
  display: grid;
  gap: 4px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.06em;
}

.librarian-config-field em {
  color: var(--accent-stamp);
  font-style: italic;
}

.librarian-config-field input {
  box-sizing: border-box;
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--border-card);
  background: var(--bg-page);
  color: var(--text-main);
  font: 0.75rem/1.45 var(--font-mono);
}

.librarian-config-field input:focus {
  outline: 0;
  border-color: var(--accent-brass);
}

.librarian-config-status {
  min-height: 1.2em;
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.04em;
  overflow-wrap: anywhere;
}

.librarian-config-foot {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 20px 16px;
}

.librarian-config-btn {
  padding: 6px 13px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.75rem;
  cursor: pointer;
}

.librarian-config-btn--primary {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

/* --------------------------------------------------------------------------
   Phase 4A · A5 卡片微光星轨联通探针（.card-star-probe）
   -------------------------------------------------------------------------- */

/* 域名改为内联级元素，让 5px 星点与其同处一行而非另起一行 */
.card-titles .card-domain-slug {
  display: inline-block;
  max-width: 100%;
  vertical-align: middle;
}

.card-star-probe {
  display: inline-block;
  flex-shrink: 0;
  box-sizing: border-box;
  width: 5px;
  height: 5px;
  margin-left: 7px;
  border-radius: 50%;
  vertical-align: middle;
  transition: background-color var(--transition-smooth),
              box-shadow var(--transition-smooth),
              opacity var(--transition-smooth);
}

/* 未巡检：静默黄铜微点 */
.card-star-probe.is-idle {
  background-color: var(--accent-brass);
  opacity: 0.35;
  box-shadow: none;
}

/* 巡检中：微弱抖动待定 */
.card-star-probe.is-probing {
  background-color: var(--accent-brass);
  opacity: 0.62;
  animation: starProbeScan 1.1s ease-in-out infinite;
}

/* 在线：恒星暖白微光呼吸灯（#F4E7C5） */
.card-star-probe.is-online {
  background-color: #F4E7C5;
  opacity: 1;
  box-shadow: 0 0 5px rgba(244, 231, 197, 0.92), 0 0 11px rgba(244, 231, 197, 0.42);
  animation: starProbeBreath 2.8s ease-in-out infinite;
}

/* 离线 / 受阻：暗红残星（#A64030） */
.card-star-probe.is-offline {
  background-color: #A64030;
  opacity: 0.78;
  box-shadow: 0 0 4px rgba(166, 64, 48, 0.5);
  animation: none;
}

@keyframes starProbeBreath {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 5px rgba(244, 231, 197, 0.92), 0 0 11px rgba(244, 231, 197, 0.42);
  }
  50% {
    opacity: 0.55;
    box-shadow: 0 0 3px rgba(244, 231, 197, 0.55), 0 0 6px rgba(244, 231, 197, 0.2);
  }
}

@keyframes starProbeScan {
  0%, 100% { opacity: 0.32; }
  50% { opacity: 0.78; }
}

/* 浅色日晷模式下暖白星点对比不足，改用青铜暖金以保可读性 */
[data-theme="light"] .card-star-probe.is-online {
  background-color: #B98A3C;
  box-shadow: 0 0 4px rgba(185, 138, 60, 0.6), 0 0 9px rgba(185, 138, 60, 0.26);
}

[data-theme="light"] .card-star-probe.is-offline {
  background-color: #A64030;
  box-shadow: none;
}

/* 窄幅索书签（.card--slip）：星点作为 flex 项排在域名之后 */
.folio-main .card--slip .card-star-probe {
  margin-left: 5px;
  align-self: center;
}

/* --------------------------------------------------------------------------
   Phase 4A · C4 司天监遥测机关台（.telemetry-deck）
   -------------------------------------------------------------------------- */
.telemetry-deck {
  box-sizing: border-box;
  width: 100%;
  max-width: 100%;
  margin: 2px 0 10px;
  border: 1px solid var(--border-hairline);
  border-left: 2px solid var(--accent-brass);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--bg-subtle) 44%, transparent), transparent 68%),
    var(--bg-page);
  overflow-x: hidden;
}

.telemetry-deck:has(.telemetry-deck-body[hidden]) {
  border-left-color: var(--border-hairline);
  background: transparent;
}

.telemetry-deck:has(.telemetry-deck-body[hidden]) .telemetry-deck-kicker {
  color: var(--text-faint);
  opacity: 0.82;
}

.telemetry-deck-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 7px 11px;
}

.telemetry-deck-kicker {
  min-width: 0;
  flex: 1 1 auto;
  overflow: hidden;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.1em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.telemetry-deck-bar-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
}

.telemetry-bar-btn {
  flex-shrink: 0;
  padding: 3px 9px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.telemetry-bar-btn:hover {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

.telemetry-bar-btn--toggle[aria-expanded="true"] {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

.telemetry-deck-body {
  box-sizing: border-box;
  width: 100%;
  max-width: 100%;
  padding: 0 11px 11px;
  border-top: 1px dashed var(--border-hairline);
  overflow-x: hidden;
}

.telemetry-deck-body[hidden] {
  display: none;
}

.telemetry-deck-instruments {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 8px;
  box-sizing: border-box;
  width: 100%;
  max-width: 100%;
  padding-top: 10px;
}

/* 古典仪器表盘：外圈细线 + 内嵌刻度 */
.telemetry-instrument {
  position: relative;
  display: grid;
  gap: 3px;
  box-sizing: border-box;
  min-width: 0;
  padding: 10px 11px 11px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 28%, var(--border-hairline));
  background:
    radial-gradient(circle at 90% 14%, color-mix(in srgb, var(--accent-brass) 9%, transparent), transparent 42%),
    color-mix(in srgb, var(--bg-page) 74%, transparent);
}

.telemetry-instrument::after {
  content: "";
  position: absolute;
  inset: 4px;
  border: 1px dotted color-mix(in srgb, var(--accent-brass) 26%, transparent);
  pointer-events: none;
}

.telemetry-instrument-label {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.08em;
}

.telemetry-instrument-value {
  color: var(--text-main);
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.telemetry-instrument-note {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.telemetry-instrument-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 3px;
}

.telemetry-instrument-btn {
  padding: 2px 7px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  cursor: pointer;
}

.telemetry-instrument-btn:hover {
  border-color: var(--accent-brass);
  color: var(--accent-brass);
}

/* 「黄铜扳手」机关拨片：机械拨动动画 */
.telemetry-brass-lever {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border: 1px solid var(--accent-brass);
  background: color-mix(in srgb, var(--accent-brass) 8%, transparent);
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  cursor: pointer;
  transform-origin: 18% 50%;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.telemetry-brass-lever:hover {
  background: color-mix(in srgb, var(--accent-brass) 16%, transparent);
}

.telemetry-lever-glyph {
  display: inline-block;
  font-size: 0.6875rem;
  transform-origin: 50% 60%;
}

/* 拨动中：快速左右扳动 */
.telemetry-brass-lever.is-pulling .telemetry-lever-glyph {
  animation: brassLeverPull 0.32s cubic-bezier(0.36, 0.07, 0.19, 0.97);
}

/* 已触发：落位并留一枚黄铜压痕 */
.telemetry-brass-lever.is-pulled {
  background: color-mix(in srgb, var(--accent-brass) 20%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent-brass) 44%, transparent);
}

@keyframes brassLeverPull {
  0% { transform: rotate(0deg); }
  28% { transform: rotate(-38deg); }
  62% { transform: rotate(22deg); }
  100% { transform: rotate(0deg); }
}

.telemetry-deck-summary {
  margin-top: 8px;
  padding-top: 7px;
  border-top: 1px dotted var(--border-hairline);
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.05em;
  overflow-wrap: anywhere;
}

/* --------------------------------------------------------------------------
   Phase 4A 响应式：390px / 375px 铁律 —— 零横向溢出
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  /* Below 900px the search section shares its grid row with the mobile action
     buttons and collapses to ~221px at 390px. Promote the sticky search bar to
     the positioning anchor so the sheet spans the full viewport width. */
  .folio-search-bar .archive-search-section {
    position: static;
  }

  .librarian-parchment-folio {
    top: calc(100% + 4px);
    right: 0;
    left: 0;
    max-height: min(62vh, 460px);
  }

  .librarian-folio-cards {
    grid-template-columns: 1fr;
    max-height: 52%;
  }

  /* Slips stack from the top and scroll inside a capped strip, so the
     annotation above keeps a usable height on short phones. */
  .librarian-folio-cards {
    align-content: start;
    flex: 0 1 auto;
    max-height: 118px;
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  /* Keep the annotation the dominant pane; the slip strip scrolls beneath it. */
  .librarian-folio-output {
    flex: 1 1 auto;
    min-height: 96px;
  }

  /* Keep the inline metadata on one line so three slips need one row. */
  .librarian-card-slip {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    column-gap: 7px;
    padding: 7px 9px;
  }

  .librarian-card-stamp {
    grid-column: 1 / 2;
    grid-row: 1 / 2;
  }

  .librarian-card-open {
    grid-column: 2 / 3;
    grid-row: 1 / 2;
  }

  .librarian-card-reason {
    grid-column: 1 / -1;
  }

  .librarian-card-crown {
    grid-column: 1 / -1;
  }

  .telemetry-deck {
    margin: 2px 0 8px;
  }

  .telemetry-deck-instruments {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  /* The sheet hangs below the sticky search bar, so its cap is the room left
     *under* that bar (roughly 200px down at 390px), not the whole viewport.
     --librarian-folio-top is published by js/librarian.js positionFolio(). */
  .librarian-parchment-folio {
    max-height: max(240px, calc(100vh - var(--librarian-folio-top, 210px) - 16px));
  }

  .librarian-parchment-folio.is-flip-up {
    max-height: max(240px, calc(var(--librarian-folio-top, 210px) - 16px));
  }

  .librarian-folio-head,
  .librarian-folio-output,
  .librarian-folio-cards,
  .librarian-folio-foot {
    padding-left: 11px;
    padding-right: 11px;
  }

  .librarian-config-backdrop {
    align-items: flex-end;
    padding: 8px;
  }

  .librarian-config-card {
    width: 100%;
    max-height: 90dvh;
  }

  .librarian-config-head,
  .librarian-config-body,
  .librarian-config-foot {
    padding-left: 14px;
    padding-right: 14px;
  }

  .telemetry-deck-bar,
  .telemetry-deck-body {
    padding-left: 9px;
    padding-right: 9px;
  }

  .telemetry-deck-kicker {
    flex: 1 1 100%;
    white-space: normal;
  }
}

@media (max-width: 390px) {
  .librarian-folio-head-actions {
    width: 100%;
    margin-left: 0;
  }

  .librarian-folio-status {
    flex: 1 1 100%;
  }

  .librarian-folio-actions {
    width: 100%;
    margin-left: 0;
  }

  .librarian-action-btn {
    flex: 1 1 auto;
    text-align: center;
  }

  .telemetry-deck-bar-actions {
    width: 100%;
    margin-left: 0;
  }

  .telemetry-bar-btn {
    flex: 1 1 auto;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .card-star-probe,
  .card-star-probe.is-online,
  .card-star-probe.is-probing,
  .librarian-parchment-folio,
  .telemetry-brass-lever.is-pulling .telemetry-lever-glyph {
    animation: none;
  }
}







/* ==========================================================================
   Phase 4B · C2 观星台晨报 / D5 网页琥珀 / A6·C5 飞鸽传书 / D7 联邦寻星镜
   全部新增选择器均带 ephemeris- / amber- / courier- / federation- 前缀，
   与 Phase 0–4A 既有样式零冲突；仅复用设计令牌，不覆盖任何旧规则。
   ========================================================================== */

/* --------------------------------------------------------------------------
   4B.1 顶栏入口与移动端入口
   -------------------------------------------------------------------------- */
.ephemeris-switch-btn .ephemeris-icon,
.courier-switch-btn .courier-icon,
.federation-switch-btn .federation-icon {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  line-height: 1;
}

.mobile-phase4b-actions {
  display: none;
}

@media (max-width: 900px) {
  .mobile-phase4b-actions {
    display: flex;
    flex: 0 0 auto;
    align-items: center;
    justify-content: flex-start;
    gap: 4px;
    width: 100%;
    margin-left: 0;
  }
}

/* 待编目匣内的飞鸽入口 */
.uncatalogued-courier-rail {
  display: flex;
  flex: 0 0 auto;
}

.uncatalogued-courier-btn {
  width: 100%;
  min-height: 34px;
  padding: 6px 10px;
  border: 1px dashed color-mix(in srgb, var(--accent-brass) 46%, transparent);
  background: transparent;
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-align: left;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.uncatalogued-courier-btn:hover {
  border-color: var(--accent-brass);
  background: color-mix(in srgb, var(--accent-brass) 8%, transparent);
}

body.ephemeris-open,
body.amber-open,
body.courier-open,
body.federation-open {
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   4B.2 C2 · 观星台晨报（古典双栏铅字）
   -------------------------------------------------------------------------- */
.ephemeris-backdrop {
  position: fixed;
  inset: 0;
  z-index: 320;
  background: rgba(10, 9, 7, 0.6);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
}

.ephemeris-backdrop[hidden],
.ephemeris-modal[hidden] {
  display: none;
}

.ephemeris-modal {
  position: fixed;
  inset: 0;
  z-index: 330;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 22px;
}

.ephemeris-sheet {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(1100px, 100%);
  max-height: min(90dvh, 900px);
  overflow: hidden;
  border: 1px solid var(--border-card);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--bg-subtle) 30%, transparent), transparent 220px),
    var(--bg-page);
  box-shadow: var(--shadow-modal);
  animation: modalScaleUp 0.26s cubic-bezier(0.16, 1, 0.3, 1);
}

.ephemeris-sheet::before {
  content: "";
  position: absolute;
  inset: 9px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 20%, transparent);
  pointer-events: none;
}

.ephemeris-masthead {
  flex: 0 0 auto;
  padding: 20px 26px 12px;
  text-align: center;
}

.ephemeris-masthead-rule {
  height: 3px;
  border-top: 1px solid var(--text-main);
  border-bottom: 1px solid var(--text-main);
  opacity: 0.55;
}

.ephemeris-masthead-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0 4px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.ephemeris-flag {
  flex: 1 1 auto;
  text-align: center;
  color: var(--accent-brass);
}

.ephemeris-title {
  margin: 4px 0 2px;
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  font-weight: 700;
  letter-spacing: 0.28em;
  text-indent: 0.28em;
  color: var(--text-main);
}

.ephemeris-subtitle {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 8px;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
}

.ephemeris-divider {
  color: var(--accent-brass);
  opacity: 0.7;
}

.ephemeris-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 0 2px;
}

.ephemeris-column-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.ephemeris-column-switch button {
  min-height: 28px;
  padding: 3px 10px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.ephemeris-column-switch button:hover {
  color: var(--text-main);
  border-color: var(--accent-brass);
}

.ephemeris-column-switch button.is-active {
  color: var(--bg-page);
  border-color: var(--accent-brass);
  background: var(--accent-brass);
}

.ephemeris-toolbar-end {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.ephemeris-source-status {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.05em;
}

.ephemeris-close {
  width: 30px;
  height: 30px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.ephemeris-close:hover {
  color: var(--text-main);
  border-color: var(--accent-brass);
}

.ephemeris-body {
  flex: 1 1 auto;
  min-height: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  border-top: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
}

.ephemeris-column {
  min-width: 0;
  padding: 16px 22px 20px;
  border-right: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
}

.ephemeris-column:nth-child(2n) {
  border-right: 0;
}

.ephemeris-column:last-child:nth-child(odd) {
  grid-column: 1 / -1;
  border-right: 0;
}

.ephemeris-column-head {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 2px 10px;
  margin-bottom: 8px;
}

.ephemeris-column-code {
  grid-column: 1 / -1;
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.16em;
}

.ephemeris-column-head h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  letter-spacing: 0.12em;
}

.ephemeris-column-count {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.55rem;
}

.ephemeris-column-rule {
  height: 2px;
  margin-bottom: 12px;
  border-top: 1px solid var(--text-main);
  border-bottom: 1px solid var(--text-main);
  opacity: 0.32;
}

.ephemeris-bulletin {
  padding: 0 0 12px;
  margin-bottom: 12px;
  border-bottom: 1px dotted var(--border-hairline);
}

.ephemeris-bulletin:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.ephemeris-bulletin-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 3px;
}

.ephemeris-kicker {
  color: var(--accent-stamp);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.ephemeris-source {
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.58rem;
  font-style: italic;
  white-space: nowrap;
}

.ephemeris-bulletin-title {
  margin: 0 0 4px;
  font-family: var(--font-serif);
  font-size: 0.92rem;
  line-height: 1.45;
  color: var(--text-main);
}

.ephemeris-bulletin-summary {
  margin: 0 0 6px;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.76rem;
  line-height: 1.72;
  text-align: justify;
}

.ephemeris-bulletin-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 7px;
}

.ephemeris-bulletin-tags span {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.04em;
}

.ephemeris-bulletin-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.ephemeris-source-link {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.ephemeris-source-link:hover {
  border-bottom-color: var(--accent-brass);
}

.ephemeris-source-link.is-muted {
  color: var(--text-faint);
}

.ephemeris-capture {
  min-height: 26px;
  padding: 2px 9px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 52%, transparent);
  background: transparent;
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 0.62rem;
  letter-spacing: 0.03em;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.ephemeris-capture:hover:not(:disabled) {
  background: color-mix(in srgb, var(--accent-brass) 12%, transparent);
  border-color: var(--accent-brass);
}

.ephemeris-capture.is-captured,
.ephemeris-capture:disabled {
  border-color: var(--border-hairline);
  color: var(--text-faint);
  cursor: default;
  opacity: 0.85;
}

.ephemeris-bulletin.is-captured .ephemeris-bulletin-title {
  color: var(--text-muted);
}

.ephemeris-column-empty {
  margin: 0;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.72rem;
  font-style: italic;
}

.ephemeris-foot {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 26px 14px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.08em;
}

.ephemeris-action-btn {
  min-height: 30px;
  padding: 4px 12px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.68rem;
  cursor: pointer;
}

.ephemeris-action-btn:hover {
  border-color: var(--accent-brass);
  color: var(--text-main);
}

/* --------------------------------------------------------------------------
   4B.3 D5 · 卡片琥珀徽章与碑拓阅览室
   -------------------------------------------------------------------------- */
.card-amber-badge {
  /* 徽章以「底部封条」形式占满卡片下缘：绝对定位的浮动角标会压住
     .card-bottom-actions 的 № 号与 ↗ 跳转符（实测重叠 16px）。 */
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 6;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 4px 7px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 70%, transparent);
  background: color-mix(in srgb, var(--bg-surface) 94%, var(--accent-brass));
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 0.58rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
  cursor: pointer;
  opacity: 0;
  transform: translateY(4px);
  pointer-events: none;
  box-shadow: 0 2px 10px -4px rgba(0, 0, 0, 0.45);
  transition: opacity var(--transition-normal), transform var(--transition-normal), background-color var(--transition-fast);
}

.card-amber-badge.is-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  animation: amberBadgePulse 3.4s ease-in-out infinite;
}

.card-amber-badge.is-visible.is-sealed {
  animation: none;
  border-color: var(--accent-brass);
  background: color-mix(in srgb, var(--accent-brass) 18%, var(--bg-surface));
}

.card-amber-badge:hover {
  background: var(--accent-brass);
  color: var(--bg-page);
}

/* 离线卡为封条预留高度，动作栏自然上移，绝不发生碰撞。 */
.entry-card.card--amber-offline {
  padding-bottom: 34px;
}

.folio-main .card--slip.card--amber-offline {
  padding-bottom: 0;
  min-height: 92px;
}

.folio-main .card--slip .card-amber-badge {
  padding: 3px 5px;
  font-size: 0.54rem;
}

@keyframes amberBadgePulse {
  0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent-brass) 34%, transparent); }
  50% { box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-brass) 0%, transparent); }
}

.marginalia-amber-block {
  padding-top: 10px;
  margin-top: 10px;
  border-top: 1px dotted var(--border-hairline);
}

.marginalia-amber-btn {
  margin-top: 5px;
  padding: 3px 9px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 50%, transparent);
  background: transparent;
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 0.64rem;
  cursor: pointer;
}

.marginalia-amber-btn:hover {
  background: color-mix(in srgb, var(--accent-brass) 12%, transparent);
}

.amber-backdrop {
  position: fixed;
  inset: 0;
  z-index: 340;
  background: rgba(12, 10, 8, 0.66);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

.amber-backdrop[hidden],
.amber-modal[hidden] {
  display: none;
}

.amber-modal {
  position: fixed;
  inset: 0;
  z-index: 350;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.amber-stone {
  position: relative;
  display: flex;
  flex-direction: column;
  width: min(680px, 100%);
  max-height: min(88dvh, 820px);
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 62%, transparent);
  background:
    radial-gradient(120% 80% at 50% 0%, color-mix(in srgb, var(--accent-brass) 12%, transparent), transparent 70%),
    repeating-linear-gradient(96deg, color-mix(in srgb, var(--text-main) 4%, transparent) 0 2px, transparent 2px 7px),
    var(--bg-page);
  box-shadow: var(--shadow-modal);
  animation: modalScaleUp 0.26s cubic-bezier(0.16, 1, 0.3, 1);
}

.amber-stone::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 34%, transparent);
  pointer-events: none;
}

.amber-head {
  display: flex;
  flex: 0 0 auto;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 20px 24px 12px;
  border-bottom: 1px solid var(--border-hairline);
}

.amber-kicker {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.16em;
}

.amber-head h2 {
  margin: 5px 0 3px;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: 0.08em;
}

.amber-meta {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.04em;
}

.amber-close {
  width: 30px;
  height: 30px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  cursor: pointer;
}

.amber-close:hover {
  border-color: var(--accent-brass);
  color: var(--text-main);
}

.amber-body {
  /* 碑拓正文自行滚动，批注与时光机入口始终可见：
     整块滚动会把 Wayback 按钮推到折线以下（实测 900px 视口不可见）。 */
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
  padding: 16px 24px;
  overflow: hidden;
}

.amber-note-block {
  flex: 0 0 auto;
  padding: 10px 12px;
  margin-bottom: 0;
  border-left: 2px solid var(--accent-brass);
  background: color-mix(in srgb, var(--accent-brass) 7%, transparent);
}

.amber-note-label {
  display: block;
  margin-bottom: 4px;
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.14em;
}

.amber-note {
  margin: 0;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.78rem;
  font-style: italic;
  line-height: 1.7;
}

.amber-snapshot {
  flex: 1 1 auto;
  min-height: 120px;
  margin: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 14px 16px;
  border: 1px solid var(--border-hairline);
  background: color-mix(in srgb, var(--bg-subtle) 40%, transparent);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.85;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.amber-wayback {
  display: inline-block;
  flex: 0 0 auto;
  align-self: flex-start;
  margin-top: 0;
  padding: 6px 12px;
  border: 1px solid var(--accent-brass);
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.amber-wayback:hover {
  background: color-mix(in srgb, var(--accent-brass) 14%, transparent);
}

.amber-foot {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 24px max(14px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--border-hairline);
}

.amber-status {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.55rem;
}

.amber-foot-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-left: auto;
}

.amber-action-btn {
  min-height: 30px;
  padding: 4px 10px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.66rem;
  cursor: pointer;
}

.amber-action-btn:hover {
  border-color: var(--accent-brass);
  color: var(--text-main);
}

.amber-action-btn--ghost {
  border-style: dashed;
}

/* --------------------------------------------------------------------------
   4B.4 A6·C5 · 飞鸽传书与 Notion 同步桥
   -------------------------------------------------------------------------- */
.courier-backdrop {
  position: fixed;
  inset: 0;
  z-index: 360;
  background: rgba(10, 9, 7, 0.58);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
}

.courier-backdrop[hidden],
.courier-modal[hidden] {
  display: none;
}

.courier-modal {
  position: fixed;
  inset: 0;
  z-index: 370;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.courier-sheet {
  display: flex;
  flex-direction: column;
  width: min(760px, 100%);
  max-height: min(90dvh, 880px);
  overflow: hidden;
  border: 1px solid var(--border-card);
  background: var(--bg-page);
  box-shadow: var(--shadow-modal);
  animation: modalScaleUp 0.24s cubic-bezier(0.16, 1, 0.3, 1);
}

.courier-head {
  display: flex;
  flex: 0 0 auto;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 20px 24px 14px;
  border-bottom: 1px solid var(--border-hairline);
}

.courier-kicker {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.16em;
}

.courier-head h2 {
  margin: 5px 0 6px;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  letter-spacing: 0.08em;
}

.courier-lede {
  max-width: 54ch;
  margin: 0;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.74rem;
  line-height: 1.72;
}

.courier-lede code {
  padding: 1px 4px;
  background: var(--bg-subtle);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.courier-close {
  width: 30px;
  height: 30px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  cursor: pointer;
}

.courier-close:hover {
  border-color: var(--accent-brass);
  color: var(--text-main);
}

.courier-body {
  flex: 1 1 auto;
  min-height: 0;
  padding: 16px 24px 20px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.courier-section {
  padding-bottom: 16px;
  margin-bottom: 16px;
  border-bottom: 1px dotted var(--border-hairline);
}

.courier-section:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.courier-section-title {
  margin: 0 0 10px;
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.courier-bookmarklet-rail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.courier-bookmarklet-slot {
  display: flex;
}

.courier-bookmarklet {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border: 1px solid var(--accent-brass);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--accent-brass) 16%, transparent), transparent),
    var(--bg-surface);
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  cursor: grab;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent-brass) 16%, transparent);
}

.courier-bookmarklet:active {
  cursor: grabbing;
  transform: translateY(1px);
}

.courier-hint {
  margin: 8px 0 0;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.68rem;
  line-height: 1.7;
}

.courier-btn {
  min-height: 32px;
  padding: 5px 11px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.72rem;
  cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast);
}

.courier-btn:hover {
  border-color: var(--accent-brass);
  color: var(--text-main);
}

.courier-btn--primary {
  border-color: var(--accent-brass);
  background: var(--accent-brass);
  color: var(--bg-page);
}

.courier-btn--ghost {
  border-style: dashed;
}

.courier-confirm {
  min-height: 40px;
}

.courier-empty {
  margin: 0;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.72rem;
  font-style: italic;
}

.courier-letter {
  padding: 12px 14px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 34%, transparent);
  background: color-mix(in srgb, var(--accent-brass) 5%, transparent);
}

.courier-letter-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
}

.courier-letter-time {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.52rem;
}

.courier-letter-title {
  margin: 0 0 3px;
  font-family: var(--font-serif);
  font-size: 0.95rem;
}

.courier-letter-url {
  margin: 0 0 6px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  word-break: break-all;
}

.courier-letter-why {
  margin: 0 0 6px;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.72rem;
  line-height: 1.7;
}

.courier-letter-why span {
  margin-right: 6px;
  color: var(--accent-stamp);
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.08em;
}

.courier-letter-quote {
  margin: 0 0 8px;
  padding: 6px 10px;
  border-left: 2px solid var(--accent-brass);
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.7rem;
  font-style: italic;
  line-height: 1.7;
}

.courier-letter-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.courier-stats {
  margin: 0 0 8px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.05em;
}

.courier-sync-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.courier-endpoint-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 8px;
  margin-bottom: 10px;
}

.courier-field {
  display: flex;
  flex: 1 1 240px;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.courier-field span {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.08em;
}

.courier-field input,
.courier-field textarea {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--border-hairline);
  background: var(--bg-surface);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.courier-field textarea {
  resize: vertical;
  line-height: 1.6;
}

.courier-field input:focus-visible,
.courier-field textarea:focus-visible {
  outline: 2px solid var(--accent-brass);
  outline-offset: 1px;
}

.courier-import {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.courier-status {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px dotted var(--border-hairline);
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.52rem;
}

.courier-status-item strong {
  color: var(--accent-brass);
  font-weight: 500;
}

.courier-foot {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 24px max(14px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--border-hairline);
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.08em;
}

/* --------------------------------------------------------------------------
   4B.5 D7 · 邻近星系寻星镜
   -------------------------------------------------------------------------- */
.federation-backdrop {
  position: fixed;
  inset: 0;
  z-index: 380;
  background: rgba(8, 10, 14, 0.62);
  -webkit-backdrop-filter: blur(3px);
  backdrop-filter: blur(3px);
}

.federation-backdrop[hidden],
.federation-modal[hidden] {
  display: none;
}

.federation-modal {
  position: fixed;
  inset: 0;
  z-index: 390;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.federation-sheet {
  display: flex;
  flex-direction: column;
  width: min(900px, 100%);
  max-height: min(90dvh, 900px);
  overflow: hidden;
  border: 1px solid var(--border-card);
  background: var(--bg-page);
  box-shadow: var(--shadow-modal);
  animation: modalScaleUp 0.24s cubic-bezier(0.16, 1, 0.3, 1);
}

.federation-head {
  display: flex;
  flex: 0 0 auto;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 20px 24px 14px;
  border-bottom: 1px solid var(--border-hairline);
}

.federation-kicker {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.16em;
}

.federation-head h2 {
  margin: 5px 0 6px;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  letter-spacing: 0.08em;
}

.federation-lede {
  max-width: 58ch;
  margin: 0;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.74rem;
  line-height: 1.72;
}

.federation-close {
  width: 30px;
  height: 30px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-mono);
  cursor: pointer;
}

.federation-close:hover {
  border-color: var(--accent-brass);
  color: var(--text-main);
}

.federation-rail {
  display: flex;
  flex: 0 0 auto;
  gap: 6px;
  padding: 10px 24px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  border-bottom: 1px solid var(--border-hairline);
  scrollbar-width: thin;
}

.federation-node-btn {
  display: flex;
  flex: 0 0 auto;
  flex-direction: column;
  gap: 2px;
  min-width: 168px;
  padding: 8px 11px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  text-align: left;
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
}

.federation-node-btn:hover {
  border-color: var(--accent-brass);
  color: var(--text-main);
}

.federation-node-btn.is-active {
  border-color: var(--accent-brass);
  border-left-width: 3px;
  background: color-mix(in srgb, var(--accent-brass) 9%, transparent);
  color: var(--text-main);
}

.federation-node-code {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.46rem;
  letter-spacing: 0.12em;
}

.federation-node-name {
  font-family: var(--font-serif);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
}

.federation-node-count {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
}

.federation-body {
  flex: 1 1 auto;
  min-height: 0;
  padding: 14px 24px 18px;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.federation-node-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--border-hairline);
}

.federation-head-main h3 {
  margin: 3px 0 2px;
  font-family: var(--font-serif);
  font-size: 1.05rem;
  letter-spacing: 0.05em;
}

.federation-motto {
  margin: 0;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.64rem;
  font-style: italic;
  letter-spacing: 0.06em;
}

.federation-head-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  text-align: right;
}

.federation-endpoint-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 8px;
  margin-bottom: 14px;
}

.federation-field {
  display: flex;
  flex: 1 1 260px;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.federation-field span {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.08em;
}

.federation-field input {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--border-hairline);
  background: var(--bg-surface);
  color: var(--text-main);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.federation-field input:focus-visible {
  outline: 2px solid var(--accent-brass);
  outline-offset: 1px;
}

.federation-btn {
  min-height: 32px;
  padding: 5px 11px;
  border: 1px solid var(--border-hairline);
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.72rem;
  white-space: nowrap;
  cursor: pointer;
}

.federation-btn:hover {
  border-color: var(--accent-brass);
  color: var(--text-main);
}

.federation-btn--ghost {
  border-style: dashed;
}

.federation-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
}

.federation-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 12px 13px;
  border: 1px solid var(--border-card);
  background: var(--bg-surface);
  transition: border-color var(--transition-fast), transform var(--transition-normal);
}

.federation-card:hover {
  border-color: var(--accent-brass);
  transform: translateY(-1px);
}

.federation-card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 4px;
}

.federation-callsign {
  color: var(--accent-brass);
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.1em;
}

.federation-category {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.48rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.federation-card-title {
  margin: 0 0 5px;
  font-family: var(--font-serif);
  font-size: 0.86rem;
  line-height: 1.4;
}

.federation-card-title a {
  color: var(--text-main);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.federation-card-title a:hover {
  color: var(--accent-brass);
  border-bottom-color: var(--accent-brass);
}

.federation-card-desc {
  flex: 1 1 auto;
  margin: 0 0 8px;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.7rem;
  line-height: 1.66;
}

.federation-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 9px;
}

.federation-card-tags span {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.48rem;
}

.federation-card-foot {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-top: auto;
}

.federation-borrow {
  min-height: 28px;
  padding: 3px 10px;
  border: 1px solid color-mix(in srgb, var(--accent-brass) 55%, transparent);
  background: transparent;
  color: var(--accent-brass);
  font-family: var(--font-serif);
  font-size: 0.64rem;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.federation-borrow:hover {
  background: var(--accent-brass);
  color: var(--bg-page);
}

.federation-borrow.is-borrowed {
  border-color: var(--border-hairline);
  color: var(--text-faint);
  cursor: default;
}

.federation-local-mark {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.06em;
}

.federation-empty {
  margin: 0;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.74rem;
  font-style: italic;
}

.federation-foot {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 24px max(14px, env(safe-area-inset-bottom));
  border-top: 1px solid var(--border-hairline);
}

.federation-status {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.5rem;
}

.federation-stat strong {
  color: var(--accent-brass);
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   4B.6 窄屏适配（<= 900 / <= 640 / <= 420）
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .ephemeris-modal,
  .amber-modal,
  .courier-modal,
  .federation-modal {
    padding: 10px;
    align-items: flex-end;
  }

  .ephemeris-sheet,
  .amber-stone,
  .courier-sheet,
  .federation-sheet {
    width: 100%;
    max-height: calc(100dvh - 20px);
  }

  .ephemeris-masthead {
    padding: 16px 16px 10px;
  }

  .ephemeris-title {
    font-size: 1.55rem;
    letter-spacing: 0.16em;
    text-indent: 0.16em;
  }

  .ephemeris-body {
    grid-template-columns: minmax(0, 1fr);
  }

  .ephemeris-column,
  .ephemeris-column:nth-child(2n) {
    border-right: 0;
  }

  .ephemeris-column {
    padding: 14px 16px 16px;
  }

  .ephemeris-foot,
  .amber-foot,
  .courier-foot,
  .federation-foot {
    padding-left: 16px;
    padding-right: 16px;
  }

  .amber-head,
  .amber-body,
  .amber-foot,
  .courier-head,
  .courier-body,
  .courier-foot,
  .federation-head,
  .federation-rail,
  .federation-body,
  .federation-foot {
    padding-left: 16px;
    padding-right: 16px;
  }

  .amber-foot-actions,
  .courier-foot,
  .federation-foot {
    justify-content: flex-start;
  }

  .amber-status {
    flex: 1 1 100%;
  }

  .federation-head-meta {
    flex-direction: row;
    gap: 10px;
    text-align: left;
  }
}

@media (max-width: 640px) {
  .ephemeris-masthead-meta {
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px 10px;
  }

  .ephemeris-flag {
    order: -1;
    flex: 1 1 100%;
    text-align: center;
  }

  .ephemeris-toolbar {
    justify-content: flex-start;
  }

  .ephemeris-toolbar-end {
    width: 100%;
    margin-left: 0;
    justify-content: space-between;
  }

  .ephemeris-column-switch {
    gap: 3px;
  }

  .ephemeris-column-switch button {
    padding: 3px 7px;
    font-size: 0.64rem;
  }

  .federation-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .courier-bookmarklet-rail {
    flex-direction: column;
    align-items: stretch;
  }

  .courier-bookmarklet {
    justify-content: center;
    text-align: center;
  }

  .courier-sync-actions .courier-btn,
  .federation-endpoint-row .federation-btn {
    flex: 1 1 auto;
    text-align: center;
  }

  .amber-foot-actions {
    width: 100%;
  }

  .amber-action-btn {
    flex: 1 1 auto;
    text-align: center;
  }
}

@media (max-width: 420px) {
  .ephemeris-sheet::before,
  .amber-stone::before {
    inset: 6px;
  }

  .ephemeris-subtitle {
    font-size: 0.64rem;
  }

  .ephemeris-body {
    padding-bottom: env(safe-area-inset-bottom);
  }
}

@media (prefers-reduced-motion: reduce) {
  .card-amber-badge.is-visible {
    animation: none;
  }

  .ephemeris-sheet,
  .amber-stone,
  .courier-sheet,
  .federation-sheet {
    animation: none;
  }
}

/* ==========================================================================
   Icon system · one optical scale across every archive surface
   ========================================================================== */
.archive-icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  padding: 5px;
  box-sizing: border-box;
  overflow: hidden;
  border: 1px solid rgba(140, 90, 50, 0.18);
  border-radius: 6px;
  background: rgba(28, 29, 25, 0.035);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.archive-icon-box .archive-icon-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 3px;
}

.folio-main .card-emblem {
  width: 34px;
  height: 34px;
  padding: 5px;
  box-sizing: border-box;
  border: 1px solid rgba(140, 90, 50, 0.18);
  border-radius: 6px;
  background: rgba(28, 29, 25, 0.035);
}

.folio-main .card-emblem .emblem-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 3px;
}

.folio-main .card--monograph .card-emblem {
  width: 40px;
  height: 40px;
  padding: 6px;
}

.folio-main .card--slip .card-slip-emblem {
  display: inline-flex;
  width: 24px;
  height: 24px;
  padding: 3px;
  border-radius: 5px;
}

.folio-main .card--slip .card-slip-emblem .emblem-img {
  width: 100%;
  height: 100%;
}

[data-theme="dark"] .archive-icon-box,
[data-theme="dark"] .card-emblem {
  border-color: rgba(200, 169, 126, 0.24);
  background: rgba(244, 231, 197, 0.08);
  box-shadow: none;
}

[data-theme="dark"] .archive-icon-box .archive-icon-img,
[data-theme="dark"] .card-emblem .emblem-img {
  filter: drop-shadow(0 0 1px rgba(255, 255, 255, 0.35));
}

[data-theme="dark"] .card-emblem .emblem-fallback-text {
  color: var(--text-main);
}

[data-sanctum="shadow"] .archive-icon-box,
[data-sanctum="shadow"] .card-emblem {
  border-color: rgba(158, 59, 66, 0.28);
  background: rgba(158, 59, 66, 0.1);
}

.uncatalogued-card-icon {
  width: 24px;
  height: 24px;
  padding: 3px;
  border-radius: 5px;
}

.federation-card-head {
  align-items: center;
}

.federation-card-icon {
  width: 24px;
  height: 24px;
  padding: 3px;
  border-radius: 5px;
  margin-right: auto;
}

.librarian-card-open {
  grid-template-columns: auto auto minmax(0, 1fr) auto;
}

.librarian-card-icon {
  width: 24px;
  height: 24px;
  padding: 3px;
  border-radius: 5px;
  align-self: center;
}

.star-preview-title-row,
.today-open-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.star-preview-icon,
.today-open-icon {
  width: 30px;
  height: 30px;
  padding: 4px;
  border-radius: 6px;
}

.star-preview-title-row h3,
.today-open-title-row .today-open-site-title {
  min-width: 0;
}

.today-open-title-row .today-open-site-title {
  margin: 10px 0;
}

@media (max-width: 900px) {
  .folio-main .card--monograph .card-emblem {
    width: 40px;
    height: 40px;
  }
}

@media (max-width: 640px) {
  .star-preview-icon,
  .today-open-icon {
    width: 28px;
    height: 28px;
    padding: 4px;
  }
}

/* Batch 2：首屏加载期间禁用颜色过渡，避免主题预置后仍出现渐变闪烁 */
html.theme-booting *,
html.theme-booting *::before,
html.theme-booting *::after { transition: none !important; }
html[data-theme="dark"] { color-scheme: dark; }
html[data-theme="light"] { color-scheme: light; }