/* ==========================================================================
   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: #E2DFD4;      /* 极细纸张纤维分隔线 */
  --border-card: #E5E1D6;
  --border-focus: #3F523E;

  --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);
}

/* 深色主题令牌 (炭黑书封与柔和纸页) */
[data-theme="dark"] {
  --bg-page: #171815;
  --bg-surface: #20211D;
  --bg-subtle: #292B25;
  --bg-hover: #32352E;
  
  --text-main: #EDEAE1;
  --text-muted: #A3A49C;
  --text-faint: #6E7067;
  
  --color-accent: #8FA887;         /* 柔和鼠尾草灰绿 */
  --color-accent-soft: #242E22;
  --color-accent-hover: #A6C09E;
  --color-bookmark: #D9883E;
  --color-bookmark-soft: #2E251B;

  --border-hairline: #2B2D26;
  --border-card: #30332B;
  --border-focus: #8FA887;

  --shadow-subtle: 0 1px 2px rgba(0, 0, 0, 0.25);
  --shadow-lift: 0 12px 28px -4px rgba(0, 0, 0, 0.55), 0 3px 8px -1px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 0 3px rgba(143, 168, 135, 0.22), 0 4px 20px rgba(0, 0, 0, 0.45);
}

/* 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;

  --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);
}

/* --------------------------------------------------------------------------
   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;
  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,
.bookshelf-stage,
.book-spine,
.book-cover,
.bookshelf-plank {
  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;
}

/* 炭黑夜读室沉浸暗房台灯光晕 (Reading Room Night Lampglow Vignette) */
[data-theme="dark"] body {
  background-color: var(--bg-page);
  background-image:
    radial-gradient(ellipse 85% 55% at 50% 0%, rgba(143, 168, 135, 0.06) 0%, transparent 65%),
    radial-gradient(ellipse 100% 100% at 50% 50%, transparent 50%, rgba(10, 11, 9, 0.45) 100%);
  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%);
}

/* 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;
}

/* 容器布局 (内容置于粒子层之上) */
.archive-wrapper {
  max-width: 1160px;
  width: 100%;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
  position: relative;
  z-index: 1;
}

/* --------------------------------------------------------------------------
   3. 顶部细导航条 (Colophon Bar)
   -------------------------------------------------------------------------- */
.top-colophon-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  border-bottom: 1px solid var(--border-hairline);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.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: 0.12em;
}

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

.colophon-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* 主题切换开关 */
.theme-switch-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  padding: 4px 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: var(--bg-subtle);
  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 {
  padding: 42px 0 28px;
  border-bottom: 2px solid var(--text-main);
  margin-bottom: 24px;
}

.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: 12px;
}

.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: 2.375rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-main);
  line-height: 1.2;
  margin-bottom: 10px;
}

.masthead-epigraph {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--text-muted);
  font-style: italic;
  max-width: 680px;
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   5. 核心搜索区域 (Search Indexing)
   -------------------------------------------------------------------------- */
.archive-search-section {
  margin-bottom: 28px;
}

.search-box-frame {
  display: flex;
  align-items: center;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
  padding: 10px 16px;
  box-shadow: var(--shadow-subtle);
  transition: border-color var(--transition-fast), box-shadow var(--transition-normal);
}

/* 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: 10px 0 12px;
  border-bottom: 1px solid var(--border-hairline);
  margin-bottom: 28px;
}

.index-tabs-rail {
  display: flex;
  align-items: center;
  gap: 6px;
  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: 1px solid transparent;
  padding: 6px 14px;
  border-radius: var(--radius-xs);
  font-family: var(--font-sans);
  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: var(--bg-subtle);
}

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

.index-tab-item.active {
  color: var(--text-main);
  background-color: var(--bg-surface);
  border-color: var(--border-card);
  font-weight: 600;
  box-shadow: var(--shadow-subtle);
}

.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: 10px 14px;
  background-color: var(--bg-surface);
  border-left: 3px solid var(--color-accent);
  border-top: 1px solid var(--border-hairline);
  border-right: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  border-radius: 0 var(--radius-xs) var(--radius-xs) 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: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  padding: 1px 7px;
  border-radius: var(--radius-xs);
  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 {
  background-color: var(--color-accent-soft);
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
}

.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 {
  margin-bottom: 40px;
}

.section-masthead-rule {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-hairline);
  margin-bottom: 18px;
}

.section-heading-group {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.section-code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  font-weight: 700;
}

.section-title-text {
  font-family: var(--font-serif);
  font-size: 1.1875rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-main);
}

.section-desc-text {
  font-size: 0.8125rem;
  color: var(--text-faint);
  margin-left: 4px;
}

.section-count-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.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(auto-fill, minmax(270px, 1fr));
  gap: 16px;
}

/* 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;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
  padding: 16px 18px;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-subtle);
  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);
  will-change: transform, box-shadow;
}

/* 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(-3px);
  border-color: var(--border-focus);
  box-shadow: var(--shadow-lift);
}

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

/* 卡片顶部印记与书签 */
.card-masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.card-identity {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.card-emblem {
  position: relative;
  width: 28px;
  height: 28px;
  border: 1px solid var(--border-hairline);
  background-color: var(--bg-subtle);
  border-radius: var(--radius-xs);
  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: 20px;
  height: 20px;
  object-fit: contain;
  display: block;
  border-radius: 2px;
}

/* 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: #F6F4EE;
  border-color: #E2DFD4;
}

[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: 1rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.25;
  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;
}

.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: 0.6875rem;
  color: var(--text-faint);
  letter-spacing: 0.03em;
  margin-top: 2px;
  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: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-faint);
  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: 16px;
  height: 16px;
  fill: currentColor;
}

/* 卡片简述摘要 */
.card-synopsis {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 14px;
  min-height: 2.45em;
}

/* 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: 10px;
  border-top: 1px dotted var(--border-hairline);
  font-size: 0.6875rem;
  gap: 8px;
}

.card-tag-pill {
  font-family: var(--font-sans);
  color: var(--text-faint);
  background-color: var(--bg-subtle);
  padding: 1px 6px;
  border-radius: var(--radius-xs);
  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: 8px;
  position: relative;
  z-index: 2;
}

/* 藏书票印记按钮 */
.btn-bookplate {
  position: relative;
  z-index: 2;
  background: none;
  border: 1px solid var(--border-hairline);
  background-color: var(--bg-subtle);
  color: var(--text-faint);
  padding: 1px 7px;
  font-size: 0.6875rem;
  font-family: var(--font-serif);
  letter-spacing: 0.02em;
  border-radius: var(--radius-xs);
  cursor: pointer;
  line-height: 1.4;
  transition: all var(--transition-fast);
}

.btn-bookplate:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background-color: var(--bg-surface);
  transform: translateY(-1px);
}

.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(--text-faint);
  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 {
  color: var(--color-accent);
  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: 36px 0 48px;
  border-top: 1px solid var(--border-hairline);
  font-size: 0.75rem;
  color: var(--text-faint);
  line-height: 1.8;
}

.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;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
}

/* --------------------------------------------------------------------------
   12. 响应式适配与媒体查询 (Responsive & A11y)
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .archive-wrapper {
    padding: 0 18px;
  }

  .editorial-masthead {
    padding: 28px 0 20px;
  }

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

  .masthead-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .entries-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

  .search-box-frame {
    padding: 8px 12px;
  }

  .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;
  }

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

/* --------------------------------------------------------------------------
   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;
  }
}

/* ==========================================================================
   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;
  }
}

/* ==========================================================================
   15. 3D 藏书馆书架视图 (Editorial 3D Bookshelf)
   ========================================================================== */

/* 书架总容器 */
.bookshelf-container {
  display: flex;
  flex-direction: column;
  gap: 36px;
  margin-top: 10px;
  margin-bottom: 40px;
}

/* 单层书架单元 */
.bookshelf-tier {
  position: relative;
  display: flex;
  flex-direction: column;
}

/* 黄铜铭牌栏 (Brass Plaque Header) */
.bookshelf-plaque-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding: 0 4px;
}

.bookshelf-plaque {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(180deg, #F5E8D0 0%, #E8D7B8 100%);
  color: #4A351D;
  border: 1px solid #C4A575;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.7);
  padding: 4px 12px;
  border-radius: 2px;
  position: relative;
}

[data-theme="dark"] .bookshelf-plaque {
  background: linear-gradient(180deg, #383023 0%, #292318 100%);
  color: #E8D6B7;
  border-color: #5E4E35;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.plaque-rivet {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #9E7D4E;
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.4);
  flex-shrink: 0;
}

.plaque-code {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  opacity: 0.9;
}

.plaque-title-text {
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.plaque-desc-text {
  font-size: 0.75rem;
  opacity: 0.85;
  margin-left: 4px;
}

.bookshelf-plaque-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.bookshelf-count-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* 书架陈列箱体 (3D Chamber) */
.bookshelf-chamber {
  position: relative;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: 3px;
  box-shadow: var(--shadow-subtle);
  overflow: visible;
}

/* 内部纵深背墙 */
.bookshelf-backwall {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.05) 0%, transparent 45%);
  pointer-events: none;
  border-radius: 3px;
}

[data-theme="dark"] .bookshelf-backwall {
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.45) 0%, transparent 50%);
}

/* 3D 透视视口 (Perspective Stage) */
.bookshelf-stage {
  perspective: 1200px;
  perspective-origin: 50% 30%;
  overflow-x: auto;
  overflow-y: visible;
  padding: 34px 28px 12px 28px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-hairline) transparent;
  scroll-behavior: smooth;
}

.bookshelf-books-row {
  display: flex;
  align-items: flex-end;
  gap: 5px;
  min-height: 248px;
}

/* 底部实体层板梁 (Shelf Wood/Paper Beam) */
.bookshelf-wood-beam {
  position: relative;
  width: 100%;
}

.beam-top-ledge {
  height: 8px;
  background: linear-gradient(90deg, #E6DFD1, #DDD4C3, #E6DFD1);
  border-top: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.08);
}

.beam-face {
  height: 16px;
  background: linear-gradient(180deg, #CFC5B2 0%, #B8AC98 100%);
  border-top: 1px solid #A89B85;
  border-bottom: 1px solid #8F826E;
}

.beam-under-shadow {
  height: 8px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.12) 0%, transparent 100%);
}

[data-theme="dark"] .beam-top-ledge {
  background: linear-gradient(90deg, #24261F, #2A2D24, #24261F);
  border-top-color: rgba(255, 255, 255, 0.08);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .beam-face {
  background: linear-gradient(180deg, #1C1D18 0%, #151612 100%);
  border-top-color: #2F3229;
  border-bottom-color: #0E0F0C;
}

[data-theme="dark"] .beam-under-shadow {
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.4) 0%, transparent 100%);
}

/* --------------------------------------------------------------------------
   单本书目立体单元 (3D Book Item)
   -------------------------------------------------------------------------- */
.book-item {
  position: relative;
  flex-shrink: 0;
  width: var(--spine-width, 32px);
  height: var(--book-height, 220px);
  perspective: 800px;
  transition: transform 0.28s cubic-bezier(0.2, 0.8, 0.2, 1);
  cursor: pointer;
  user-select: none;
  will-change: transform;
  z-index: 1;
}

.book-3d-wrap {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transition: transform 0.28s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* 书顶面（纸页顶缘） */
.book-top-edge {
  position: absolute;
  top: 0;
  left: 0;
  width: var(--spine-width, 32px);
  height: 16px;
  background: var(--spine-edge, #EDE8DC);
  transform-origin: top;
  transform: rotateX(-90deg);
  border-radius: 2px 2px 0 0;
  box-shadow: inset 0 0 3px rgba(0, 0, 0, 0.2);
}

/* 书侧面露出部分（纸页侧缘） */
.book-side-edge {
  position: absolute;
  top: 0;
  right: 0;
  width: 16px;
  height: 100%;
  background: var(--spine-edge, #EDE8DC);
  transform-origin: right;
  transform: rotateY(90deg);
  box-shadow: inset -1px 0 3px rgba(0, 0, 0, 0.2);
}

/* 书脊正面 (Spine Face) */
.book-spine-face {
  position: absolute;
  inset: 0;
  background: var(--spine-bg);
  border: 1px solid var(--spine-border);
  border-radius: 2px 2px 0 0;
  color: var(--spine-text);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 10px 4px;
  box-sizing: border-box;
  box-shadow: -2px 0 5px rgba(0, 0, 0, 0.22), inset 1px 0 2px rgba(255, 255, 255, 0.18), inset -2px 0 4px rgba(0, 0, 0, 0.35);
  outline: none;
  transition: box-shadow 0.25s ease;
}

.book-spine-face:focus-visible {
  outline: 2px solid var(--spine-foil);
  outline-offset: 2px;
}

/* 书脊顶部印记 */
.spine-head-band {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

.spine-rule-gold {
  display: block;
  width: 75%;
  height: 1px;
  background-color: var(--spine-foil);
  opacity: 0.75;
}

.spine-monogram {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--spine-foil);
  line-height: 1;
  letter-spacing: 0.05em;
  text-align: center;
  padding: 1px 0;
}

/* 书脊中部题名竖排 */
.spine-title-rail {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin: 6px 0;
}

.spine-title-text {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.2;
  max-height: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--spine-text);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.45);
}

/* 书脊底端卷标与星标 */
.spine-tail-band {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

.spine-bookmark-glyph {
  font-size: 0.625rem;
  color: var(--spine-foil);
  opacity: 0;
  transition: opacity 0.2s ease;
  line-height: 1;
}

.spine-bookmark-glyph.active {
  opacity: 1;
}

.spine-volume-tag {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  color: var(--spine-foil);
  opacity: 0.85;
  line-height: 1;
}

/* 抽书悬停与聚焦动效 (3D Pull-out) */
.book-item:hover,
.book-item:focus-within,
.book-item.is-open {
  transform: translateY(-14px);
  z-index: 500;
}

.book-item:hover .book-3d-wrap,
.book-item:focus-within .book-3d-wrap,
.book-item.is-open .book-3d-wrap {
  transform: translateZ(36px) rotateY(-8deg);
}

.book-item:hover .book-spine-face,
.book-item:focus-within .book-spine-face,
.book-item.is-open .book-spine-face {
  box-shadow: -8px 8px 18px rgba(0, 0, 0, 0.42), inset 1px 0 2px rgba(255, 255, 255, 0.28);
}

/* --------------------------------------------------------------------------
   抽书侧向便签卷卡 (Flyout Card)
   -------------------------------------------------------------------------- */
.book-flyout-card {
  position: absolute;
  left: calc(100% + 14px);
  top: 50%;
  transform: translateY(-50%) scale(0.92);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  width: 228px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xs);
  box-shadow: 0 16px 36px -4px rgba(0, 0, 0, 0.32), 0 0 0 1px var(--border-hairline);
  padding: 12px 14px;
  z-index: 600;
  cursor: default;
}

.book-item:hover .book-flyout-card,
.book-item:focus-within .book-flyout-card,
.book-item.is-open .book-flyout-card {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(-50%) scale(1);
}

/* 右边缘智能向左翻转 */
.book-item.flyout-flip-left .book-flyout-card {
  left: auto;
  right: calc(100% + 14px);
}

/* 古典雕花书立 (Brass Bookend) */
.shelf-bookend {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  margin-left: 6px;
  height: 160px;
  user-select: none;
  pointer-events: none;
  flex-shrink: 0;
}

.bookend-body {
  width: 18px;
  height: 120px;
  background: linear-gradient(135deg, #DEBA57 0%, #B88E28 50%, #876112 100%);
  border-radius: 4px 8px 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: -2px 0 6px rgba(0, 0, 0, 0.2), inset 1px 1px 2px rgba(255, 255, 255, 0.4);
  border: 1px solid #A88022;
  transform: skewX(-3deg);
  transform-origin: bottom;
}

.bookend-ornament {
  font-size: 0.8125rem;
  color: #4A3206;
  opacity: 0.85;
  transform: skewX(3deg);
}

.bookend-base {
  width: 28px;
  height: 8px;
  background: linear-gradient(180deg, #B88E28 0%, #7B550F 100%);
  border-radius: 0 3px 2px 0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.25);
  border: 1px solid #6E4907;
}

[data-theme="dark"] .bookend-body {
  background: linear-gradient(135deg, #8A7238 0%, #615024 50%, #3B3012 100%);
  border-color: #54441B;
}

[data-theme="dark"] .bookend-ornament {
  color: #E2CA94;
}

[data-theme="dark"] .bookend-base {
  background: linear-gradient(180deg, #615024 0%, #2A2109 100%);
  border-color: #3B3012;
}

.flyout-card-masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  gap: 8px;
}

.flyout-card-identity {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.flyout-card-emblem {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-xs);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--text-main);
}

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

.flyout-card-name {
  font-family: var(--font-serif);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.flyout-card-domain {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--text-faint);
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.btn-flyout-bookmark {
  background: none;
  border: none;
  color: var(--text-faint);
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-xs);
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-flyout-bookmark:hover {
  color: var(--color-bookmark);
  transform: scale(1.15);
}

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

.flyout-card-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0 0 10px 0;
  min-height: 2.1em;
}

.flyout-card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  padding-top: 8px;
  border-top: 1px dotted var(--border-hairline);
}

.btn-flyout-bookplate {
  font-family: var(--font-serif);
  font-size: 0.6875rem;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-hairline);
  color: var(--text-faint);
  padding: 2px 7px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-flyout-bookplate:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background-color: var(--bg-surface);
}

.btn-flyout-visit {
  font-family: var(--font-serif);
  font-size: 0.6875rem;
  font-weight: 600;
  background-color: var(--color-accent);
  color: #FFFFFF;
  padding: 2px 9px;
  border-radius: var(--radius-xs);
  text-decoration: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  display: inline-block;
}

.btn-flyout-visit:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   响应式与无障碍微调
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .bookshelf-stage {
    padding: 24px 16px 8px 16px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }

  .book-item {
    scroll-snap-align: start;
  }

  /* 移动端关闭高频 3D 旋转，改用纯 2D 位移以保 60 FPS 流畅 */
  .book-item:hover,
  .book-item:focus-within,
  .book-item.is-open {
    transform: translateY(-10px) !important;
  }

  .book-flyout-card {
    width: 200px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .book-item {
    transition: none !important;
  }

  .book-item:hover,
  .book-item:focus-within,
  .book-item.is-open {
    transform: none !important;
  }

  .book-flyout-card {
    transition: none !important;
    transform: translateY(-50%) !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,
.book-flyout-card {
  position: relative;
}

/* 纸面微光感与墨色融合提升 */
[data-theme="light"] .entry-card {
  box-shadow: 0 1px 3px rgba(36, 37, 31, 0.04), 0 0 0 1px rgba(226, 223, 212, 0.6);
}

[data-theme="dark"] .entry-card {
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(43, 45, 38, 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);
}

/* 自动时序状态标签微提示 */
.circadian-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: var(--text-faint);
}

/* ==========================================================================
   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;
}

.book-item.keyboard-focused {
  transform: translateY(-14px) !important;
  z-index: 40 !important;
}

.book-item.keyboard-focused .book-spine-face {
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.4), 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;
}

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

.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);
}