/* ==========================================================================
   事业单位D类 · 卡片杂志风样式 · v5
   白底 + 强色块 + 卡片化 + 树形结构
   设计原则：信息密度 · 视觉锚点 · 层级清晰
   ========================================================================== */

/* ---------- 设计变量 ---------- */
:root {
  /* 主背景（白底系） */
  --paper:        #ffffff;
  --paper-warm:   #fafbfc;
  --paper-edge:   #e5e7eb;
  --paper-shade:  #f3f4f6;

  /* 横线（保留兼容） */
  --line:         #e5e7eb;
  --line-strong:  #d1d5db;

  /* 文字（灰度系） */
  --ink:          #111827;
  --ink-soft:     #374151;
  --ink-light:    #6b7280;
  --ink-faint:    #9ca3af;

  /* 强调色（鲜亮现代） */
  --pen-blue:     #3b82f6;
  --pen-blue-dk:  #1d4ed8;
  --pen-blue-bg:  #eff6ff;
  --pen-red:      #ef4444;
  --pen-red-dk:   #b91c1c;
  --pen-red-bg:   #fef2f2;
  --pen-green:    #10b981;
  --pen-green-dk: #047857;
  --pen-green-bg: #ecfdf5;
  --pen-orange:   #f59e0b;
  --pen-orange-dk:#b45309;
  --pen-orange-bg:#fffbeb;
  --pen-purple:   #8b5cf6;
  --pen-purple-dk:#6d28d9;
  --pen-purple-bg:#f5f3ff;
  --pen-tea:      #6b7280;

  /* 荧光笔（保留兼容 · 现代淡色） */
  --hl-yellow:    #fef08a;
  --hl-pink:      #fbcfe8;
  --hl-green:     #bbf7d0;
  --hl-orange:    #fed7aa;
  --hl-blue:      #bfdbfe;
  --hl-purple:    #ddd6fe;

  /* 胶带（保留兼容） */
  --tape:         #fde68a;
  --tape-red:     #fecaca;
  --tape-green:   #bbf7d0;
  --tape-blue:    #bfdbfe;

  --note-width:   920px;

  /* ---------- 间距尺度 ---------- */
  --space-xs:  6px;
  --space-sm:  12px;
  --space-md:  20px;
  --space-lg:  32px;
  --space-xl:  48px;

  /* ---------- 圆角 ---------- */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;

  /* ---------- 阴影 ---------- */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 2px 8px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 4px 16px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(15, 23, 42, 0.04);

  /* 兼容旧变量 */
  --paper-soft:  #fafbfc;
  --paper-mid:   #f3f4f6;
}

/* ---------- 重置 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI",
               Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  line-height: 1.75;
  font-size: 15.5px;
  background-color: var(--paper-warm);
  background-image: none;
  background-attachment: fixed;
  word-wrap: break-word;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- 主容器 ---------- */
.page {
  max-width: var(--note-width);
  margin: 0 auto;
  padding: 40px 36px 120px;
  position: relative;
  background: var(--paper);
  box-shadow: var(--shadow-md);
  border-radius: 0;
  min-height: calc(100vh - 40px);
}
/* 删除装订孔和横线纸效果 */
.page::before { content: none; }
.page::after  { content: none; }

/* ---------- 页眉 ---------- */
.page-header {
  margin-bottom: 32px;
  padding: 0 0 16px;
  border-bottom: 1px solid var(--line);
  position: relative;
}
.page-header::after { content: none; }
.page-header::before { content: none; }

.breadcrumb {
  font-size: 13px;
  color: var(--ink-light);
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}
.breadcrumb a {
  color: var(--pen-blue);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
  transition: border-color 0.2s;
}
.breadcrumb a:hover { border-color: var(--pen-blue); }
.breadcrumb .sep { margin: 0 6px; opacity: 0.5; }

h1.note-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--ink);
  margin: 6px 0 0;
  letter-spacing: 0.5px;
  position: relative;
}
h1.note-title::before { content: none; }

.note-meta {
  font-size: 12.5px;
  color: var(--ink-light);
  margin-top: 6px;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   标题层级 · 卡片杂志风
   ========================================================================== */
h2.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--ink);
  margin: 48px 0 22px;
  padding: 14px 18px;
  background: linear-gradient(135deg, var(--pen-blue-bg), #ffffff 60%);
  border-left: 4px solid var(--pen-blue);
  border-radius: var(--radius-sm);
  letter-spacing: 1px;
  position: relative;
}
/* 删除旧的双线装饰 */
h2.section-title::after { content: none; }
/* h2 左侧装饰花朵 */
h2.section-title::before {
  content: "❀";
  color: var(--pen-red);
  margin-right: 10px;
  font-size: 24px;
  vertical-align: -2px;
}

h3.subsection-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  margin: 36px 0 14px;
  letter-spacing: 0.5px;
  padding: 10px 14px;
  background: var(--paper-shade);
  border-left: 3px solid var(--pen-blue);
  border-radius: var(--radius-sm);
  position: relative;
}
h3.subsection-title::before { content: none; }
h3.subsection-title::after  { content: none; }

h4.minor-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin: 22px 0 10px;
  padding: 6px 10px;
  display: inline-block;
  position: relative;
  background: var(--pen-blue-bg);
  border-radius: var(--radius-sm);
}
h4.minor-title::before {
  content: "▸";
  color: var(--pen-blue);
  margin-right: 6px;
  background: none;
}

/* ==========================================================================
   正文元素
   ========================================================================== */
p { margin: 10px 0; }
strong { color: var(--ink); font-weight: 700; }
em { font-style: normal; border-bottom: 1px dashed var(--ink-light); padding-bottom: 1px; }
code {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: var(--paper-shade);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--pen-red-dk);
}
ul, ol { margin: 8px 0 12px; padding-left: 24px; }
li { margin: 4px 0; }
a { color: var(--pen-blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- 高亮（现代色块） ---------- */
.mark-y { background: var(--hl-yellow); color: var(--ink); padding: 1px 4px; border-radius: 3px; }
.mark-p { background: var(--hl-pink);   color: var(--ink); padding: 1px 4px; border-radius: 3px; }
.mark-g { background: var(--hl-green);  color: var(--ink); padding: 1px 4px; border-radius: 3px; }
.mark-o { background: var(--hl-orange); color: var(--ink); padding: 1px 4px; border-radius: 3px; }
.mark-b { background: var(--hl-blue);   color: var(--ink); padding: 1px 4px; border-radius: 3px; }
.mark-u { background: var(--hl-purple); color: var(--ink); padding: 1px 4px; border-radius: 3px; }

/* 整句高亮 */
.mark-line-y { display: block; background: var(--hl-yellow); padding: 6px 12px; margin: 8px 0; border-radius: var(--radius-sm); color: var(--ink); }
.mark-line-p { display: block; background: var(--hl-pink);   padding: 6px 12px; margin: 8px 0; border-radius: var(--radius-sm); color: var(--ink); }
.mark-line-g { display: block; background: var(--hl-green);  padding: 3px 8px; margin: 6px 0; border-radius: 2px; }

/* ==========================================================================
   行内批注（红字）
   ========================================================================== */
.annotate {
  color: var(--pen-red);
  font-weight: 500;
  font-size: 0.95em;
  margin-left: 4px;
}
.annotate::before { content: "  ※ "; color: var(--pen-red); }

.annotate-block {
  background: var(--pen-red-bg);
  border-left: 3px solid var(--pen-red);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 12px 16px;
  margin: 14px 0;
  position: relative;
  color: var(--ink-soft);
  font-size: 0.95em;
}
.annotate-block::before {
  content: "批注";
  display: inline-block;
  background: var(--pen-red);
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  margin-right: 8px;
  letter-spacing: 1px;
  font-weight: 500;
  vertical-align: 1px;
}

/* ==========================================================================
   核心知识卡片 · key-box（绿色系）
   ========================================================================== */
.key-box {
  background: var(--paper);
  border: 1px solid var(--paper-edge);
  border-left: 4px solid var(--pen-green);
  border-radius: var(--radius-sm);
  padding: 16px 20px 14px;
  margin: 18px 0;
  position: relative;
  box-shadow: var(--shadow-sm);
}
.key-box .box-label {
  display: inline-block;
  background: var(--pen-green);
  color: #fff;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  letter-spacing: 1px;
  font-weight: 500;
  margin: 0 0 8px;
}
.key-box::after { content: none; }

/* ==========================================================================
   高频考点卡片 · exam-box（红色系）
   ========================================================================== */
.exam-box {
  background: var(--paper);
  border: 1px solid var(--paper-edge);
  border-left: 4px solid var(--pen-red);
  border-radius: var(--radius-sm);
  padding: 16px 20px 14px;
  margin: 18px 0;
  position: relative;
  box-shadow: var(--shadow-sm);
}
.exam-box .box-label {
  display: inline-block;
  background: var(--pen-red);
  color: #fff;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  letter-spacing: 1px;
  font-weight: 500;
  margin: 0 0 8px;
}
.exam-box::after { content: none; }

/* ==========================================================================
   记忆口诀 · mnemonic-box（蓝紫色）
   ========================================================================== */
.mnemonic-box {
  background: linear-gradient(135deg, var(--pen-purple-bg), var(--pen-blue-bg));
  border: 1px solid var(--pen-purple);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin: 18px 0;
  position: relative;
  text-align: center;
}
.mnemonic-box::before {
  content: "🔑 口诀";
  position: absolute;
  top: -10px; left: 16px;
  background: var(--paper);
  color: var(--pen-purple-dk);
  font-size: 11px;
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 1px;
  border: 1px solid var(--pen-purple);
  font-weight: 500;
}
.mnemonic-text {
  font-size: 15.5px;
  color: var(--ink);
  letter-spacing: 1px;
  line-height: 1.85;
  font-weight: 500;
}
.mnemonic-tip {
  display: block;
  font-size: 12px;
  color: var(--ink-light);
  margin-top: 8px;
  letter-spacing: 0;
}

/* ==========================================================================
   易错提示 · warn-box（橙色系）
   ========================================================================== */
.warn-box {
  background: var(--pen-orange-bg);
  border: 1px solid var(--pen-orange);
  border-left: 4px solid var(--pen-orange);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin: 14px 0;
  position: relative;
}
.warn-box::before {
  content: "⚠ 易错";
  display: inline-block;
  background: var(--pen-orange);
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  margin-right: 8px;
  letter-spacing: 1px;
  font-weight: 500;
  vertical-align: 1px;
}
.warn-box::after { content: none; }

/* ==========================================================================
   提示框 · tip-box（蓝色系）
   ========================================================================== */
.tip-box {
  background: var(--pen-blue-bg);
  border: 1px solid var(--pen-blue);
  border-left: 4px solid var(--pen-blue);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin: 14px 0;
  font-size: 0.96em;
  color: var(--ink-soft);
}
.tip-box::before {
  content: "💡 提示｜";
  color: var(--pen-blue-dk);
  font-weight: 600;
}

/* ---------- 引用 ---------- */
blockquote {
  margin: 14px 0;
  padding: 10px 16px;
  border-left: 3px solid var(--paper-edge);
  color: var(--ink-soft);
  background: var(--paper-shade);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.95em;
}

/* ==========================================================================
   表格 · 升级 · 更清晰的层级
   ========================================================================== */
.table-wrapper {
  margin: 18px 0;
  overflow-x: auto;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}
.table-wrapper table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95em;
  background: var(--paper);
}
.table-wrapper th {
  background: var(--ink);
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.5px;
  padding: 10px 14px;
  text-align: left;
  font-size: 0.92em;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.table-wrapper td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--paper-edge);
  vertical-align: top;
  color: var(--ink-soft);
}
.table-wrapper tr:nth-child(even) td {
  background: var(--paper-warm);
}
.table-wrapper tr:hover td {
  background: var(--pen-blue-bg);
}

/* ==========================================================================
   便签卡片网格 · v2 · 取消随机配色，统一米白底
   ========================================================================== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin: 18px 0;
}

/* 基础卡片：白底 + 左色条 + 圆角 + 微阴影 */
.knowledge-card {
  background: var(--paper);
  padding: 16px 16px 14px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  position: relative;
  min-height: 100px;
  border: 1px solid var(--paper-edge);
  border-left: 4px solid var(--pen-blue);
  transition: box-shadow 0.2s, transform 0.2s;
}
.knowledge-card:nth-child(even) { transform: none; }
.knowledge-card:nth-child(3n)   { transform: none; }
.knowledge-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
/* 删除胶带和折角 */
.knowledge-card::before { content: none; }
.knowledge-card::after  { content: none; }

/* 卡片标题 */
.knowledge-card h5 {
  margin: 4px 0 8px;
  color: var(--ink);
  font-weight: 700;
  font-size: 17px;
  font-weight: normal;
  border-bottom: 1px dashed var(--pen-blue);
  padding-bottom: 5px;
  letter-spacing: 0.5px;
}
/* 卡片内列表紧凑 */
.knowledge-card ul, .knowledge-card ol {
  margin: 4px 0;
  padding-left: 22px;
}
.knowledge-card li { margin: 2px 0; }

/* ==========================================================================
   目录 · 真实笔记本目录感
   ========================================================================== */
.toc {
  background:
    linear-gradient(180deg, rgba(255, 250, 230, 0.85), rgba(255, 248, 220, 0.6));
  border: 1.5px solid var(--line-strong);
  border-radius: 4px;
  padding: 24px 28px 18px 24px;
  margin: 28px 0 36px;
  position: relative;
  box-shadow: 2px 3px 0 rgba(180, 160, 120, 0.10);
}
.toc::before {
  content: "目录";
  position: absolute;
  top: -14px; left: 22px;
  background: var(--ink);
  color: var(--paper);
  padding: 4px 16px;
  font-size: 12.5px;
  font-family: "Baoli SC", sans-serif;
  letter-spacing: 4px;
  border-radius: 2px;
  transform: rotate(-1deg);
  box-shadow: 1px 2px 3px rgba(0,0,0,0.1);
}
.toc::after {
  content: "· Contents ·";
  position: absolute;
  top: -10px; right: 22px;
  background: var(--paper);
  padding: 0 8px;
  font-size: 11px;
  color: var(--ink-light);
  font-family: "Hannotate SC", sans-serif;
  letter-spacing: 2px;
}
.toc > ol { padding-left: 26px; margin: 6px 0; counter-reset: toc; }
.toc > ol > li {
  margin: 8px 0;
  font-size: 16px;
  font-family: "Baoli SC", serif;
  color: var(--pen-blue-dk);
  letter-spacing: 1px;
}
.toc > ol > li::marker { color: var(--pen-red); font-weight: bold; }
.toc li { margin: 4px 0; }
.toc a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px dotted transparent;
  transition: border-color 0.2s;
}
.toc a:hover { color: var(--pen-red); border-color: var(--pen-red); }
.toc ol ol {
  font-family: "Kaiti SC", serif;
  font-size: 14px;
  color: var(--ink-soft);
  margin: 4px 0 6px;
  list-style-type: '› ';
}
.toc ol ol li { margin: 2px 0; letter-spacing: 0; }

/* ==========================================================================
   章节末尾分隔
   ========================================================================== */
.section-divider {
  text-align: center;
  margin: 48px 0 24px;
  color: var(--line-strong);
  letter-spacing: 14px;
  font-size: 14px;
  position: relative;
}
.section-divider::before,
.section-divider::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 25%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}
.section-divider::before { left: 5%; }
.section-divider::after { right: 5%; }

/* ==========================================================================
   首页专用（旧版）
   ========================================================================== */
.home-hero {
  text-align: center;
  padding: 60px 20px 40px;
}
.home-hero h1 {
  font-family: "Baoli SC", "Kaiti SC", serif;
  font-size: 42px;
  color: var(--pen-blue-dk);
  letter-spacing: 6px;
  margin: 0 0 12px;
  text-shadow: 2px 2px 0 rgba(192, 57, 43, 0.1);
}
.home-hero p {
  color: var(--ink-soft);
  font-size: 16px;
  font-family: "Hannotate SC", sans-serif;
  letter-spacing: 2px;
}

.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin: 30px 0;
}
.module-card {
  background: rgba(255, 252, 240, 0.7);
  border: 2px solid var(--pen-blue);
  border-radius: 10px;
  padding: 22px 24px;
  text-decoration: none;
  color: var(--ink);
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}
.module-card:hover {
  transform: translateY(-4px) rotate(-0.5deg);
  box-shadow: 4px 6px 12px rgba(0,0,0,0.1);
}
.module-card h3 {
  margin: 0 0 8px;
  color: var(--pen-blue-dk);
  font-family: "Baoli SC", sans-serif;
  font-size: 22px;
  font-weight: normal;
  letter-spacing: 2px;
}
.module-card .desc {
  color: var(--ink-soft);
  font-size: 14px;
  font-family: "Hannotate SC", sans-serif;
  margin: 0 0 10px;
}
.module-card .chapters {
  font-size: 13px;
  color: var(--ink-light);
  line-height: 1.7;
}
.module-card .chapters a {
  display: block;
  color: var(--pen-blue);
  text-decoration: none;
  padding: 2px 0;
  border-bottom: 1px dotted transparent;
}
.module-card .chapters a:hover { border-color: var(--pen-blue); }
.module-card.coming-soon { opacity: 0.55; }
.module-card.coming-soon::after {
  content: "敬请期待";
  position: absolute;
  top: 10px; right: 12px;
  background: var(--ink-light);
  color: var(--paper);
  padding: 2px 8px;
  font-size: 11px;
  border-radius: 3px;
  font-family: "PingFang SC", sans-serif;
  letter-spacing: 1px;
}

/* ==========================================================================
   升级版组件 · 首页 Hero / 科目卡片 / 统计栏 / 导航
   ========================================================================== */
.home-hero-v2 {
  text-align: center;
  padding: 56px 20px 32px;
  position: relative;
}
.home-hero-v2::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 4px;
  background:
    radial-gradient(circle at 20% 50%, var(--pen-red) 0, var(--pen-red) 3px, transparent 3px) 0 0/40px 4px,
    radial-gradient(circle at 60% 50%, var(--pen-blue) 0, var(--pen-blue) 3px, transparent 3px) 0 0/40px 4px;
  opacity: 0.4;
}
.home-hero-v2 .hero-deco-top {
  font-size: 28px;
  letter-spacing: 16px;
  color: var(--pen-red);
  margin-bottom: 12px;
  opacity: 0.85;
}
.home-hero-v2 h1 {
  font-family: "Baoli SC", serif;
  font-size: 48px;
  color: var(--pen-blue-dk);
  letter-spacing: 8px;
  margin: 0 0 14px;
  text-shadow: 2px 2px 0 rgba(192, 57, 43, 0.08);
}
.home-hero-v2 .hero-subtitle {
  color: var(--ink-soft);
  font-size: 16px;
  font-family: "Hannotate SC", sans-serif;
  letter-spacing: 3px;
  margin-bottom: 10px;
}
.home-hero-v2 .hero-date {
  color: var(--ink-light);
  font-size: 13px;
  font-family: "Hannotate SC", sans-serif;
  letter-spacing: 1px;
}

/* ---------- 升级版科目卡片 ---------- */
.subject-card {
  position: relative;
  display: block;
  background:
    linear-gradient(135deg, rgba(255, 252, 240, 0.95), rgba(252, 246, 230, 0.75));
  border: 2px solid var(--pen-blue);
  border-radius: 12px;
  padding: 28px 30px 26px;
  text-decoration: none;
  color: var(--ink);
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
  box-shadow: 3px 4px 0 rgba(26, 77, 143, 0.08);
}
.subject-card::before {
  content: "";
  position: absolute;
  top: -40px; right: -40px;
  width: 160px; height: 160px;
  background: radial-gradient(circle, rgba(26,77,143,0.10) 0%, transparent 65%);
  border-radius: 50%;
  pointer-events: none;
}
.subject-card::after {
  content: "";
  position: absolute;
  top: 12px; left: 12px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--pen-red);
  box-shadow: 12px 0 0 var(--hl-yellow), 24px 0 0 var(--hl-green);
  opacity: 0.7;
}
.subject-card:hover {
  transform: translateY(-6px) rotate(-0.3deg);
  box-shadow: 6px 12px 28px rgba(26,77,143,0.15);
  border-color: var(--pen-red);
}
.subject-card .subject-icon {
  font-size: 38px;
  display: block;
  margin-bottom: 8px;
  margin-left: 50px;
}
.subject-card h3 {
  font-family: "Baoli SC", serif;
  font-size: 24px;
  color: var(--pen-blue-dk);
  margin: 0 0 10px;
  letter-spacing: 2.5px;
  position: relative;
  z-index: 1;
}
.subject-card .desc {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.85;
  margin: 0 0 14px;
  font-family: "Hannotate SC", sans-serif;
  position: relative;
  z-index: 1;
}
.subject-card .progress-bar {
  height: 6px;
  background: rgba(180, 160, 120, 0.18);
  border-radius: 3px;
  overflow: hidden;
  margin: 12px 0 6px;
  position: relative;
  z-index: 1;
}
.subject-card .progress-bar > div {
  height: 100%;
  background: linear-gradient(90deg, var(--pen-blue), #4a8b4a);
  border-radius: 3px;
  transition: width 0.6s;
  box-shadow: 0 0 4px rgba(26, 77, 143, 0.3);
}
.subject-card .progress-text {
  font-size: 12px;
  color: var(--ink-light);
  font-family: "Hannotate SC", sans-serif;
  position: relative;
  z-index: 1;
  letter-spacing: 0.5px;
}
.subject-card .chapter-links {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line-strong);
  position: relative;
  z-index: 1;
}
.subject-card .chapter-links a {
  display: block;
  color: var(--pen-blue);
  text-decoration: none;
  font-size: 13px;
  padding: 4px 0;
  border-bottom: 1px dotted transparent;
  transition: color 0.2s, border-color 0.2s, padding-left 0.2s;
}
.subject-card .chapter-links a:hover {
  border-color: var(--pen-blue);
  color: var(--pen-red);
  padding-left: 6px;
}
.subject-card.coming-soon { opacity: 0.7; }
.subject-card.coming-soon::after {
  content: "待整理";
  position: absolute;
  top: 16px; right: 18px;
  background: var(--ink-light);
  color: var(--paper);
  padding: 3px 10px;
  font-size: 11px;
  border-radius: 2px;
  font-family: "PingFang SC", sans-serif;
  letter-spacing: 1px;
  z-index: 2;
  display: none;
}

/* ---------- 统计栏（胶带便签）---------- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 16px;
  margin: 32px 0;
}
.stats-item {
  text-align: center;
  padding: 18px 10px 14px;
  background: linear-gradient(180deg, rgba(255, 250, 230, 0.85), rgba(255, 246, 218, 0.6));
  border: 1px solid var(--line);
  border-radius: 4px;
  position: relative;
  box-shadow: 1px 2px 4px rgba(180, 160, 120, 0.10);
}
.stats-item::before {
  content: "";
  position: absolute;
  top: -7px; left: 50%;
  transform: translateX(-50%) rotate(-2deg);
  width: 36px; height: 14px;
  background: var(--tape);
  opacity: 0.8;
  background-image: repeating-linear-gradient(
    90deg,
    transparent 0,
    transparent 6px,
    rgba(255,255,255,0.3) 6px,
    rgba(255,255,255,0.3) 10px
  );
}
.stats-item:nth-child(2)::before { background: var(--tape-red); }
.stats-item:nth-child(3)::before { background: var(--tape-green); }
.stats-item:nth-child(4)::before { background: var(--tape-blue); }

.stats-num {
  font-family: "Baoli SC", serif;
  font-size: 34px;
  color: var(--pen-red-dk);
  display: block;
  line-height: 1;
  text-shadow: 1px 1px 0 rgba(192, 57, 43, 0.08);
}
.stats-label {
  font-size: 12px;
  color: var(--ink-light);
  margin-top: 8px;
  font-family: "Hannotate SC", sans-serif;
  letter-spacing: 1.5px;
}

/* ---------- 笔记页底部章节导航 ---------- */
.note-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 48px 0 24px;
}
.note-nav > a,
.note-nav > .placeholder {
  display: block;
  padding: 16px 20px;
  border: 1.5px dashed var(--line-strong);
  border-radius: 6px;
  text-decoration: none;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(255, 252, 240, 0.75), rgba(255, 248, 220, 0.5));
  transition: all 0.25s;
  position: relative;
}
.note-nav > a:hover {
  border-color: var(--pen-blue);
  border-style: solid;
  background: linear-gradient(180deg, rgba(220, 240, 255, 0.6), rgba(230, 245, 255, 0.4));
  transform: translateY(-2px);
  box-shadow: 2px 4px 10px rgba(26, 77, 143, 0.10);
}
.note-nav .nav-label {
  font-size: 12px;
  color: var(--ink-light);
  font-family: "Hannotate SC", sans-serif;
  letter-spacing: 1px;
}
.note-nav .nav-title {
  font-family: "Baoli SC", serif;
  font-size: 17px;
  color: var(--pen-blue-dk);
  margin-top: 4px;
  letter-spacing: 1px;
}
.note-nav > .placeholder {
  text-align: center;
  color: var(--ink-light);
  font-family: "Hannotate SC", sans-serif;
  font-size: 13px;
  background: rgba(180, 160, 120, 0.05);
}

/* ---------- 浮动返回顶部按钮 ---------- */
.back-to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--pen-blue);
  color: #fff;
  border: 2px solid #fff;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 2px 4px 14px rgba(26,77,143,0.35);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s, transform 0.25s, background 0.25s;
  z-index: 100;
  font-family: sans-serif;
  padding: 0;
  line-height: 1;
}
.back-to-top:hover {
  transform: translateY(-4px);
  background: var(--pen-red);
  box-shadow: 3px 6px 18px rgba(192,57,43,0.40);
}
.back-to-top.visible {
  opacity: 0.95;
  visibility: visible;
}

/* ---------- 页脚信息 ---------- */
.page-footer {
  margin-top: 48px;
  padding: 22px 0 0;
  border-top: 1px dashed var(--line-strong);
  text-align: center;
  color: var(--ink-light);
  font-size: 12px;
  font-family: "Hannotate SC", sans-serif;
  letter-spacing: 1px;
  position: relative;
}
.page-footer::before {
  content: "· ·";
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--paper);
  padding: 0 12px;
  color: var(--line-strong);
  letter-spacing: 4px;
}
.page-footer a {
  color: var(--pen-blue);
  text-decoration: none;
  border-bottom: 1px dotted var(--pen-blue);
}

/* ==========================================================================
   v3 可视化组件 · 章节徽章 / 概念树 / 流程图 / 年龄轴 / 关系图
   ========================================================================== */

/* ---------- 章节大徽章（h3 标题增强） ---------- */
h3.subsection-title {
  display: flex;
  align-items: center;
  padding-left: 22px;
}
h3.subsection-title::before {
  content: "";
  position: absolute;
  left: 0; top: 4px; bottom: 4px;
  width: 5px;
  background: linear-gradient(180deg, var(--pen-red), var(--pen-red-dk));
  border-radius: 3px;
}

/* ---------- 通用 · 居中徽章（可放章节序号） ---------- */
.chapter-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Baoli SC", serif;
  font-size: 22px;
  color: #fff;
  background: linear-gradient(135deg, var(--pen-red), var(--pen-red-dk));
  width: 42px; height: 42px;
  border-radius: 50%;
  margin-right: 14px;
  vertical-align: middle;
  box-shadow: 2px 3px 0 rgba(192, 57, 43, 0.20), 3px 4px 8px rgba(192, 57, 43, 0.15);
  border: 2px solid #fff;
  flex-shrink: 0;
}

/* ==========================================================================
   概念树 · concept-tree · 中心节点 + 分支
   ========================================================================== */
.concept-tree {
  background:
    radial-gradient(circle at 50% 0%, rgba(220, 240, 255, 0.5), transparent 60%),
    rgba(255, 252, 240, 0.6);
  border: 1.5px dashed var(--pen-blue);
  border-radius: 8px;
  padding: 26px 18px 18px;
  margin: 22px 0;
  position: relative;
}
.concept-tree::before {
  content: "概念图";
  position: absolute;
  top: -12px; left: 18px;
  background: var(--pen-blue);
  color: #fff;
  padding: 3px 12px;
  font-size: 12px;
  font-family: "Baoli SC", sans-serif;
  letter-spacing: 2px;
  border-radius: 2px;
  transform: rotate(-1deg);
}
.tree-root {
  text-align: center;
  margin-bottom: 18px;
}
.tree-root > div {
  display: inline-block;
  background: linear-gradient(135deg, var(--pen-blue), var(--pen-blue-dk));
  color: #fff;
  font-family: "Baoli SC", serif;
  font-size: 19px;
  padding: 8px 24px;
  border-radius: 6px;
  letter-spacing: 2px;
  box-shadow: 2px 3px 0 rgba(26, 77, 143, 0.20);
}
.tree-branches {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  position: relative;
}
/* 连接线（顶部） */
.tree-branches::before {
  content: "";
  position: absolute;
  top: -18px;
  left: 10%; right: 10%;
  height: 18px;
  border-top: 1.5px dashed var(--pen-blue);
  border-left: 1.5px dashed var(--pen-blue);
  border-right: 1.5px dashed var(--pen-blue);
  border-bottom: none;
  border-radius: 6px 6px 0 0;
}
.tree-branch {
  display: flex;
  flex-direction: column;
  align-items: stretch;
}
.branch-node {
  background: linear-gradient(135deg, #fff5e0, #ffe8c2);
  border: 1.5px solid #c8702c;
  color: #8b4a14;
  font-family: "Baoli SC", serif;
  font-size: 16px;
  padding: 8px 12px;
  text-align: center;
  border-radius: 4px;
  margin-bottom: 8px;
  box-shadow: 1px 2px 0 rgba(200, 112, 44, 0.15);
  letter-spacing: 1px;
}
.branch-children {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.branch-leaf {
  background: rgba(230, 246, 230, 0.7);
  border: 1px dashed #4a8b4a;
  color: var(--ink-soft);
  font-size: 13px;
  padding: 5px 9px;
  border-radius: 3px;
  text-align: center;
  font-family: "Kaiti SC", serif;
}

/* ==========================================================================
   流程图 · flow-steps · 步骤 + 箭头
   ========================================================================== */
.flow-steps {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 6px;
  margin: 18px 0;
  padding: 14px;
  background: rgba(255, 252, 240, 0.4);
  border-left: 3px solid var(--pen-blue);
}
.flow-step {
  flex: 1;
  min-width: 80px;
  background: rgba(255, 252, 240, 0.6);
  border: 1px solid rgba(176, 152, 110, 0.35);
  border-top: 2px solid var(--pen-blue);
  color: var(--ink);
  font-family: "Baoli SC", serif;
  font-size: 14.5px;
  padding: 10px 8px;
  text-align: center;
  letter-spacing: 1px;
  position: relative;
}
.flow-step strong {
  display: block;
  font-size: 13px;
  color: var(--ink-light);
  font-family: "Hannotate SC", sans-serif;
  letter-spacing: 0;
  margin-top: 4px;
  font-weight: normal;
}
.flow-step.highlight {
  background: rgba(255, 248, 230, 0.8);
  border-color: var(--pen-red);
  border-top-color: var(--pen-red);
  color: var(--pen-red-dk);
}
.flow-arrow {
  display: flex;
  align-items: center;
  font-size: 22px;
  color: var(--pen-blue);
  font-weight: bold;
  padding: 0 2px;
}

/* ==========================================================================
   年龄轴 · age-axis · 横向刻度
   ========================================================================== */
.age-axis {
  margin: 26px 0;
  padding: 30px 16px 14px;
  background:
    linear-gradient(180deg, rgba(255, 252, 240, 0.7), rgba(255, 248, 220, 0.4));
  border: 1.5px dashed var(--ink-light);
  border-radius: 8px;
  position: relative;
}
.age-axis::before {
  content: "年龄轴";
  position: absolute;
  top: -12px; left: 18px;
  background: var(--pen-tea);
  color: #fff;
  padding: 3px 12px;
  font-size: 12px;
  font-family: "Baoli SC", sans-serif;
  letter-spacing: 2px;
  border-radius: 2px;
  transform: rotate(-1deg);
}
.axis-track {
  position: relative;
  height: 4px;
  background: linear-gradient(90deg, #d4d4d4 0%, #4a8b4a 30%, #d4a017 60%, var(--pen-red) 90%);
  border-radius: 2px;
  margin: 8px 8px 50px;
}
.axis-point {
  position: absolute;
  top: -6px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.axis-point::before {
  content: "";
  width: 16px; height: 16px;
  background: #fff;
  border: 3px solid var(--ink);
  border-radius: 50%;
}
.axis-point.p-red::before    { border-color: var(--pen-red); background: rgba(255, 200, 195, 0.5); }
.axis-point.p-yellow::before { border-color: #d4a017; background: rgba(255, 240, 180, 0.5); }
.axis-point.p-green::before  { border-color: #4a8b4a; background: rgba(200, 230, 200, 0.5); }
.axis-num {
  margin-top: 8px;
  font-family: "Baoli SC", serif;
  font-size: 17px;
  color: var(--ink);
  background: var(--paper);
  padding: 2px 8px;
  border-radius: 3px;
  border: 1px dashed var(--ink-light);
}
.axis-label {
  position: absolute;
  top: 40px;
  white-space: nowrap;
  font-size: 12.5px;
  font-family: "Hannotate SC", sans-serif;
  padding: 3px 8px;
  border-radius: 3px;
}
.axis-point.p-red    .axis-label { background: rgba(255, 200, 195, 0.5); color: var(--pen-red-dk); }
.axis-point.p-yellow .axis-label { background: rgba(255, 240, 180, 0.6); color: #8b4a14; }
.axis-point.p-green  .axis-label { background: rgba(200, 230, 200, 0.6); color: #2a5a2a; }

/* ==========================================================================
   关系图 · relation-map · 节点 + 箭头连接
   ========================================================================== */
.relation-map {
  background: rgba(255, 252, 240, 0.45);
  border: 1px dashed rgba(176, 152, 110, 0.4);
  border-left: 3px solid var(--pen-blue);
  padding: 14px 16px 12px;
  margin: var(--space-md) 0;
  position: relative;
}
.relation-map::before {
  content: "关系图";
  position: absolute;
  top: -10px; left: 14px;
  background: var(--paper-mid);
  color: var(--pen-blue-dk);
  padding: 0 8px;
  font-size: 12px;
  font-family: "Baoli SC", sans-serif;
  letter-spacing: 2px;
}
.relation-row {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin: 8px 0;
  flex-wrap: wrap;
}
.relation-node {
  background: rgba(255, 252, 240, 0.7);
  border: 1px solid rgba(176, 152, 110, 0.5);
  border-left: 3px solid #c8702c;
  color: var(--ink);
  font-family: "Baoli SC", serif;
  font-size: 15px;
  padding: 8px 14px;
  text-align: center;
  min-width: 90px;
}
.relation-node.n-blue {
  border-left-color: var(--pen-blue);
  color: var(--pen-blue-dk);
}
.relation-node.n-red {
  border-left-color: var(--pen-red);
  color: var(--pen-red-dk);
}
.relation-node.n-green {
  border-left-color: #4a8b4a;
  color: #2a5a2a;
}
.relation-node.n-orange {
  border-left-color: #d97a2c;
  color: #8a4a14;
}
.relation-node.n-purple {
  border-left-color: #6a4a8b;
  color: #3a205a;
}
.relation-arrow {
  font-size: 18px;
  color: var(--pen-blue);
  font-weight: bold;
  font-family: sans-serif;
}
.relation-arrow.r-vertical {
  display: block;
  text-align: center;
  transform: rotate(90deg);
  margin: -4px 0;
}
.relation-label {
  font-size: 11.5px;
  color: var(--ink-light);
  font-family: "Hannotate SC", sans-serif;
  background: rgba(255, 252, 240, 0.7);
  padding: 1px 6px;
  border-radius: 2px;
  margin: 0 2px;
}

/* ==========================================================================
   所有权四权能 · ownership-powers · 四宫格节点（核心高亮）
   ========================================================================== */
.ownership-powers {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 14px;
}
.power-node {
  background: rgba(255, 252, 240, 0.5);
  border: 1px solid rgba(176, 152, 110, 0.35);
  border-top: 3px solid var(--pen-blue);
  padding: 12px 10px 10px;
  text-align: center;
  position: relative;
}
.power-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--pen-blue);
  color: #fff;
  font-family: 'Baoli SC', serif;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 6px;
}
.power-name {
  font-family: 'Baoli SC', serif;
  font-size: 17px;
  color: var(--ink);
  letter-spacing: 1px;
  margin-bottom: 4px;
}
.power-desc {
  font-size: 12px;
  color: var(--ink-light);
  line-height: 1.55;
}
.power-node.power-core {
  background: rgba(255, 248, 230, 0.7);
  border-top-color: var(--pen-red);
  border-color: var(--pen-red);
}
.power-node.power-core .power-icon {
  background: var(--pen-red);
}
.power-node.power-core .power-name {
  color: var(--pen-red-dk);
}
.core-flag {
  display: inline-block;
  font-family: 'Hannotate SC', sans-serif;
  font-size: 10px;
  color: var(--pen-red);
  background: rgba(255, 255, 255, 0.7);
  padding: 1px 5px;
  border-radius: 3px;
  margin-left: 4px;
  vertical-align: middle;
  letter-spacing: 0;
}

/* ==========================================================================
   v4 美化增强 · 子小节标题 / 紧凑要点 / 重点卡片 / 图标徽章
   ========================================================================== */

/* ---------- 5级小节标题 · note-callout（朴素笔记风） ---------- */
.note-callout {
  font-family: "Baoli SC", "Kaiti SC", serif;
  font-size: 16px;
  font-weight: normal;
  margin: var(--space-lg) 0 var(--space-sm);
  padding: 4px 0 4px 12px;
  position: relative;
  letter-spacing: 1px;
  color: var(--ink);
}
.note-callout::before {
  content: "";
  position: absolute;
  left: 0; top: 6px; bottom: 6px;
  width: 3px;
  background: var(--pen-blue);
}
.note-callout.nc-red::before { background: var(--pen-red); }
.note-callout.nc-red    { color: var(--pen-red-dk); }
.note-callout.nc-blue   { color: var(--pen-blue-dk); }
.note-callout.nc-green  { color: #2a5a2a; }
.note-callout.nc-green::before { background: #4a8b4a; }
.note-callout.nc-orange { color: #8a4a14; }
.note-callout.nc-orange::before { background: #d97a2c; }
.note-callout.nc-purple { color: #3a205a; }
.note-callout.nc-purple::before { background: #6a4a8b; }
.note-callout .nc-sub {
  font-family: "Hannotate SC", sans-serif;
  font-size: 12px;
  color: var(--ink-light);
  font-weight: normal;
  margin-left: 8px;
  letter-spacing: 0;
}

/* ---------- 紧凑要点列表（朴素笔记本色） ---------- */
.compact-points {
  background: rgba(255, 252, 240, 0.5);
  border: 1px dashed rgba(176, 152, 110, 0.4);
  border-left: 3px solid var(--pen-blue);
  padding: 10px 14px;
  margin: var(--space-sm) 0;
  font-size: 14px;
  line-height: 1.85;
}
.compact-points .cp-label {
  display: block;
  font-family: "Baoli SC", serif;
  font-size: 14px;
  color: var(--pen-blue-dk);
  margin-bottom: 4px;
  letter-spacing: 1px;
}
.compact-points ul, .compact-points ol {
  margin: 4px 0 0;
  padding-left: 20px;
}
.compact-points.cp-red    { border-left-color: var(--pen-red); }
.compact-points.cp-red .cp-label    { color: var(--pen-red-dk); }
.compact-points.cp-green  { border-left-color: #4a8b4a; }
.compact-points.cp-green .cp-label  { color: #2a5a2a; }
.compact-points.cp-orange { border-left-color: #d97a2c; }
.compact-points.cp-orange .cp-label { color: #8a4a14; }

/* ---------- 核心规则框（朴素红框大字） ---------- */
.big-rule {
  text-align: center;
  margin: var(--space-md) 0;
  padding: 14px 20px;
  background: rgba(255, 252, 240, 0.6);
  border: 1.5px solid var(--pen-red);
  position: relative;
}
.big-rule .br-text {
  font-family: "Baoli SC", "Kaiti SC", serif;
  font-size: 20px;
  color: var(--pen-red-dk);
  letter-spacing: 2px;
  line-height: 1.5;
  margin: 0;
}
.big-rule .br-sub {
  margin-top: 6px;
  font-family: "Hannotate SC", sans-serif;
  font-size: 12px;
  color: var(--ink-light);
  letter-spacing: 0;
}
.big-rule.br-blue { border-color: var(--pen-blue); }
.big-rule.br-blue .br-text { color: var(--pen-blue-dk); }

/* ---------- 双栏对比框（朴素笔记双栏） ---------- */
.vs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: var(--space-md) 0;
}
.vs-col {
  padding: 10px 14px;
  border: 1px dashed rgba(176, 152, 110, 0.45);
  border-top: 2px solid;
  background: rgba(255, 252, 240, 0.4);
}
.vs-col .vs-label {
  font-family: "Baoli SC", serif;
  font-size: 15px;
  letter-spacing: 1px;
  margin-bottom: 6px;
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.vs-col .vs-tag {
  display: inline-block;
  font-family: "Hannotate SC", sans-serif;
  font-size: 11px;
  color: var(--ink-light);
  letter-spacing: 0;
}
.vs-col.vs-a { border-top-color: #4a8b4a; }
.vs-col.vs-a .vs-label { color: #2a5a2a; }
.vs-col.vs-b { border-top-color: #d97a2c; }
.vs-col.vs-b .vs-label { color: #8a4a14; }
.vs-col p { margin: 3px 0; font-size: 14px; line-height: 1.75; }

/* ==========================================================================
   卡片标签变体 · 卡片色彩强调（保留单色，但可指定）
   ========================================================================== */
.knowledge-card.k-red    { border-left: 4px solid var(--pen-red); }
.knowledge-card.k-blue   { border-left: 4px solid var(--pen-blue); }
.knowledge-card.k-green  { border-left: 4px solid #4a8b4a; }
.knowledge-card.k-orange { border-left: 4px solid #c8702c; }
.knowledge-card.k-purple { border-left: 4px solid #8a4a8b; }
.knowledge-card.k-red::before    { background: var(--tape-red); }
.knowledge-card.k-blue::before   { background: var(--tape-blue); }
.knowledge-card.k-green::before  { background: var(--tape-green); }

/* ==========================================================================
   小图标 inline · 用 emoji 强化视觉
   ========================================================================== */
.icon-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 252, 240, 0.7);
  border: 1px dashed var(--ink-light);
  border-radius: 12px;
  padding: 2px 8px;
  font-size: 12px;
  font-family: "Hannotate SC", sans-serif;
  color: var(--ink-soft);
  margin: 0 3px;
}

/* ==========================================================================
   响应式 · 平板 / 手机
   ========================================================================== */
@media (max-width: 768px) {
  body { font-size: 16px; line-height: 1.9; background-size: 100% 30px, 100% 100%, 100% 100%, 200px 200px; }
  .page { padding: 24px 24px 80px 36px; }
  .page::before { left: 14px; }
  .page::after { left: 10px; }
  .page-header::before { left: -36px; right: -24px; }

  h1.note-title { font-size: 26px; letter-spacing: 1.5px; }
  h2.section-title { font-size: 23px; margin: 36px 0 18px; }
  h3.subsection-title { font-size: 19px; margin: 26px 0 12px; }
  h4.minor-title { font-size: 17px; }

  .home-hero { padding: 40px 16px 24px; }
  .home-hero h1 { font-size: 32px; letter-spacing: 3px; }

  ul, ol { padding-left: 22px; }
  .toc { padding: 20px 20px 16px; }
  .toc > ol { padding-left: 22px; }
  .toc > ol > li { font-size: 15px; }

  .mnemonic-text { font-size: 19px; letter-spacing: 2px; }

  .table-wrapper { font-size: 0.92em; }
  .table-wrapper th, .table-wrapper td { padding: 7px 10px; }

  /* 可视化组件响应式 */
  .chapter-mark { width: 36px; height: 36px; font-size: 18px; margin-right: 10px; }
  .flow-steps { padding: 14px 12px; gap: 4px; }
  .flow-step { min-width: 70px; font-size: 13px; padding: 8px 6px; }
  .flow-arrow { font-size: 18px; }
  .age-axis { padding: 28px 8px 14px; }
  .axis-track { margin: 8px 4px 50px; }
  .relation-node { font-size: 13px; padding: 6px 10px; min-width: 70px; }
  .tree-branches { grid-template-columns: 1fr; gap: 10px; }
  .branch-node { font-size: 15px; }
  .ownership-powers { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .vs-grid { grid-template-columns: 1fr; gap: 10px; }
  .big-rule { padding: 14px 16px; }
  .big-rule .br-text { font-size: 19px; letter-spacing: 1px; }

  /* 升级组件响应式 */
  .subject-card { padding: 24px 24px; }
  .subject-card h3 { font-size: 21px; }
  .subject-card .subject-icon { margin-left: 0; }
  .home-hero-v2 { padding: 40px 16px 24px; }
  .home-hero-v2 h1 { font-size: 34px; letter-spacing: 4px; }
  .home-hero-v2 .hero-deco-top { font-size: 22px; letter-spacing: 10px; }
  .stats-num { font-size: 28px; }
  .note-nav { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
    line-height: 1.85;
    background-size: 100% 28px, 100% 100%, 100% 100%, 200px 200px;
    background-position: 0 10px, 0 0, 0 0, 0 0;
  }
  .page { padding: 20px 16px 60px 28px; }
  .page::before { left: 8px; }
  .page::after { left: 4px; display: none; }

  h1.note-title { font-size: 22px; }
  h2.section-title { font-size: 20px; letter-spacing: 1px; }
  h3.subsection-title { font-size: 18px; padding-left: 12px; }
  h3.subsection-title::before { width: 3px; }
  h4.minor-title { font-size: 16px; }

  .home-hero h1 { font-size: 26px; letter-spacing: 2px; }
  .home-hero p { font-size: 14px; }

  .module-grid { gap: 16px; }
  .module-card { padding: 18px 18px; }

  .key-box, .exam-box, .warn-box, .tip-box, .annotate-block {
    padding: 14px 16px 14px 18px;
    margin: 16px 0;
  }
  .annotate-block { padding-left: 32px; }

  .card-grid { grid-template-columns: 1fr; gap: 14px; }
  .knowledge-card { padding: 16px 14px 12px; }

  .mnemonic-text { font-size: 17px; letter-spacing: 1px; }
  blockquote { padding: 8px 14px; margin: 10px 0; }

  /* 长表格横向滚动 */
  .table-wrapper { margin: 14px -16px; }
  .table-wrapper table { font-size: 0.88em; }

  /* 可视化组件响应式 */
  .chapter-mark { width: 32px; height: 32px; font-size: 16px; margin-right: 8px; }
  .flow-steps { flex-direction: column; padding: 12px 10px; }
  .flow-step { min-width: 0; width: 100%; }
  .flow-arrow { transform: rotate(90deg); padding: 4px 0; }
  .age-axis { padding: 24px 4px 14px; overflow-x: auto; }
  .relation-node { font-size: 12px; padding: 5px 8px; min-width: 60px; }
  .ownership-powers { grid-template-columns: 1fr 1fr; gap: 8px; }
  .power-name { font-size: 17px; }
  .power-desc { font-size: 11px; }
  .note-callout { font-size: 15px; padding: 5px 10px 5px 12px; }
  .big-rule .br-text { font-size: 17px; }
  .vs-col { padding: 12px 12px; }

  /* 升级组件响应式 */
  .home-hero-v2 h1 { font-size: 26px; letter-spacing: 2px; }
  .subject-card { padding: 20px 20px; }
  .subject-card h3 { font-size: 19px; }
  .back-to-top { width: 40px; height: 40px; right: 16px; bottom: 16px; font-size: 18px; }
}

/* 大屏 */
@media (min-width: 1200px) {
  body { font-size: 16px; }
  .page { max-width: 940px; }
}

/* 打印 */
@media print {
  body { background: #fff; font-size: 12pt; }
  .page::before, .page::after { display: none; }
  .page-header, .annotate-block::before { color: #000; }
  .key-box, .exam-box, .tip-box, .warn-box { break-inside: avoid; }
}

/* ==========================================================================
   v5 卡片杂志风 · 新增核心组件
   ========================================================================== */

/* ---------- 树形结构 · tree ---------- */
/* 解决短句堆砌，用缩进 + 色条 + emoji 锚点形成逻辑骨架 */
.tree {
  margin: 14px 0;
  padding: 14px 18px;
  background: var(--paper);
  border: 1px solid var(--paper-edge);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.tree > ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.tree li {
  position: relative;
  margin: 6px 0;
  padding-left: 22px;
  line-height: 1.7;
}
/* 一级（▸ 主项） */
.tree > ul > li {
  font-weight: 600;
  color: var(--ink);
  padding-left: 24px;
}
.tree > ul > li::before {
  content: "▸";
  position: absolute;
  left: 0; top: 0;
  color: var(--pen-blue);
  font-weight: bold;
}
/* 二级及以下 */
.tree ul ul {
  list-style: none;
  margin: 4px 0 4px;
  padding-left: 0;
}
.tree ul ul li {
  font-weight: normal;
  color: var(--ink-soft);
}
.tree ul ul li::before {
  content: "└─";
  position: absolute;
  left: 0; top: 0;
  color: var(--ink-faint);
  font-family: monospace;
  font-size: 0.95em;
}
.tree ul ul ul li::before {
  content: "·";
  color: var(--ink-light);
}
/* 强调色变体 */
.tree.t-red    > ul > li::before { color: var(--pen-red); }
.tree.t-green  > ul > li::before { color: var(--pen-green); }
.tree.t-orange > ul > li::before { color: var(--pen-orange); }
.tree.t-purple > ul > li::before { color: var(--pen-purple); }

/* ---------- 卡片标题 · card-head（带 emoji + 标签） ---------- */
.card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--paper-edge);
}
.card-head .ch-icon {
  font-size: 22px;
  line-height: 1;
}
.card-head .ch-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  flex: 1;
  letter-spacing: 0.5px;
}
.card-head .ch-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  font-weight: 500;
  letter-spacing: 0.5px;
  background: var(--paper-shade);
  color: var(--ink-light);
}
.card-head .ch-tag.t-red    { background: var(--pen-red-bg);    color: var(--pen-red-dk); }
.card-head .ch-tag.t-blue   { background: var(--pen-blue-bg);   color: var(--pen-blue-dk); }
.card-head .ch-tag.t-green  { background: var(--pen-green-bg);  color: var(--pen-green-dk); }
.card-head .ch-tag.t-orange { background: var(--pen-orange-bg); color: var(--pen-orange-dk); }
.card-head .ch-tag.t-purple { background: var(--pen-purple-bg); color: var(--pen-purple-dk); }

/* ---------- 紧凑卡片网格 · mini-cards ---------- */
.mini-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin: 14px 0;
}
.mini-card {
  background: var(--paper);
  border: 1px solid var(--paper-edge);
  border-top: 3px solid var(--pen-blue);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  text-align: center;
  transition: box-shadow 0.2s, transform 0.2s;
}
.mini-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}
.mini-card .mc-icon {
  font-size: 24px;
  margin-bottom: 4px;
  display: block;
}
.mini-card .mc-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
  letter-spacing: 0.5px;
}
.mini-card .mc-desc {
  font-size: 12px;
  color: var(--ink-light);
  line-height: 1.6;
}
.mini-card.mc-red    { border-top-color: var(--pen-red); }
.mini-card.mc-red .mc-title    { color: var(--pen-red-dk); }
.mini-card.mc-green  { border-top-color: var(--pen-green); }
.mini-card.mc-green .mc-title  { color: var(--pen-green-dk); }
.mini-card.mc-orange { border-top-color: var(--pen-orange); }
.mini-card.mc-orange .mc-title { color: var(--pen-orange-dk); }
.mini-card.mc-purple { border-top-color: var(--pen-purple); }
.mini-card.mc-purple .mc-title { color: var(--pen-purple-dk); }
.mini-card.mc-core {
  border-color: var(--pen-red);
  border-width: 2px;
  background: var(--pen-red-bg);
}
.mini-card.mc-core .mc-title { color: var(--pen-red-dk); }

/* ---------- 标签胶囊 · badge ---------- */
.badge {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--paper-shade);
  color: var(--ink-soft);
  font-weight: 500;
  letter-spacing: 0.3px;
  vertical-align: 1px;
}
.badge.b-red    { background: var(--pen-red-bg);    color: var(--pen-red-dk); }
.badge.b-blue   { background: var(--pen-blue-bg);   color: var(--pen-blue-dk); }
.badge.b-green  { background: var(--pen-green-bg);  color: var(--pen-green-dk); }
.badge.b-orange { background: var(--pen-orange-bg); color: var(--pen-orange-dk); }
.badge.b-purple { background: var(--pen-purple-bg); color: var(--pen-purple-dk); }

/* ---------- 大段引文/法条原文 · quote-block ---------- */
.quote-block {
  margin: 14px 0;
  padding: 12px 16px 12px 20px;
  background: var(--paper-shade);
  border-left: 3px solid var(--ink-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--ink-soft);
  font-size: 0.94em;
  line-height: 1.7;
  position: relative;
}
.quote-block::before {
  content: "📖 原文";
  display: block;
  font-size: 11px;
  color: var(--ink-light);
  letter-spacing: 1px;
  margin-bottom: 4px;
  font-weight: 500;
}

/* ---------- 树形响应式 ---------- */
@media (max-width: 768px) {
  .mini-cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .mini-cards { grid-template-columns: 1fr; }
  .card-head { flex-wrap: wrap; gap: 6px; }
}

/* ==========================================================================
   Editorial Override · 杂志风覆盖层
   优先级最高（!important），用于 v5 重构后的页面
   ========================================================================== */

/* === Editorial 杂志风 · 关键组件内联 === */
    :root {
      --ed-paper:   #faf9f7;
      --ed-pure:    #ffffff;
      --ed-ink:     #0a0a0a;
      --ed-ink2:    #1f2937;
      --ed-gray:    #6b7280;
      --ed-faint:   #e5e7eb;
      --ed-accent:  #dc2626;
      --ed-accent2: #fee2e2;
      --ed-gold:    #b45309;
      --ed-gold2:   #fef3c7;
      --ed-teal:    #0f766e;
      --ed-teal2:   #ccfbf1;
      --ed-indigo:  #1e40af;
      --ed-indigo2: #dbeafe;
    }
    body {
      background: var(--ed-paper) !important;
      color: var(--ed-ink) !important;
      font-family: -apple-system, "PingFang SC", "Noto Sans SC", sans-serif !important;
      line-height: 1.75 !important;
    }
    .page {
      background: var(--ed-paper) !important;
      box-shadow: 0 1px 0 var(--ed-faint) !important;
    }

    /* === 章节大标题 - 杂志刊头风 === */
    h2.section-title {
      font-family: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", serif !important;
      font-size: 34px !important;
      font-weight: 900 !important;
      letter-spacing: -0.5px !important;
      color: var(--ed-ink) !important;
      margin: 60px 0 24px !important;
      padding: 0 0 16px !important;
      background: none !important;
      border-left: none !important;
      border-bottom: 4px solid var(--ed-ink) !important;
      border-radius: 0 !important;
      position: relative !important;
    }
    h2.section-title::before {
      content: "VOL." !important;
      font-family: "Songti SC", serif !important;
      font-size: 12px !important;
      color: var(--ed-accent) !important;
      letter-spacing: 4px !important;
      margin-right: 0 !important;
      display: block !important;
      font-weight: 400 !important;
      margin-bottom: 6px !important;
    }
    h2.section-title::after { content: none !important; }

    /* === 子章节标题 === */
    h3.subsection-title {
      font-family: "Songti SC", "Noto Serif SC", serif !important;
      font-size: 24px !important;
      font-weight: 700 !important;
      color: var(--ed-ink) !important;
      margin: 44px 0 16px !important;
      padding: 0 !important;
      background: none !important;
      border: none !important;
      border-left: none !important;
      display: flex !important;
      align-items: center !important;
      gap: 14px !important;
      letter-spacing: 0 !important;
    }
    h3.subsection-title::before { content: none !important; }
    h3.subsection-title .chapter-mark {
      background: var(--ed-ink) !important;
      color: white !important;
      font-family: "Songti SC", serif !important;
      font-size: 20px !important;
      width: auto !important;
      height: auto !important;
      min-width: 38px !important;
      padding: 4px 12px !important;
      border-radius: 0 !important;
      font-weight: 700 !important;
      display: inline-flex !important;
      align-items: center !important;
      justify-content: center !important;
    }

    /* === Card Head - 黑底白字刊头条 === */
    .card-head {
      background: var(--ed-ink) !important;
      color: white !important;
      padding: 14px 18px 14px 22px !important;
      margin: 28px 0 14px !important;
      display: flex !important;
      align-items: center !important;
      gap: 14px !important;
      border: none !important;
      border-radius: 0 !important;
      position: relative !important;
      border-bottom: none !important;
    }
    .card-head::before {
      content: "" !important;
      position: absolute !important;
      left: 0 !important; top: 0 !important; bottom: 0 !important;
      width: 6px !important;
      background: var(--ed-accent) !important;
    }
    .card-head .ch-icon {
      font-size: 22px !important;
      filter: grayscale(0) !important;
    }
    .card-head .ch-title {
      font-family: "Songti SC", "Noto Serif SC", serif !important;
      font-size: 18px !important;
      font-weight: 700 !important;
      color: white !important;
      flex: 1 !important;
      letter-spacing: 1px !important;
    }
    .card-head .ch-tag {
      background: var(--ed-accent) !important;
      color: white !important;
      padding: 4px 10px !important;
      font-size: 11px !important;
      font-weight: 600 !important;
      letter-spacing: 1.5px !important;
      border-radius: 0 !important;
      text-transform: uppercase !important;
    }
    .card-head .ch-tag.t-blue   { background: var(--ed-indigo) !important; }
    .card-head .ch-tag.t-green  { background: var(--ed-teal) !important; }
    .card-head .ch-tag.t-orange { background: var(--ed-gold) !important; }
    .card-head .ch-tag.t-purple { background: #6d28d9 !important; }

    /* === Mini Cards - 不对称网格 + Hero Card === */
    .mini-cards {
      display: grid !important;
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)) !important;
      gap: 14px !important;
      margin: 20px 0 !important;
    }
    .mini-card {
      background: var(--ed-pure) !important;
      border: 1px solid var(--ed-faint) !important;
      border-top: none !important;
      border-radius: 0 !important;
      padding: 18px 20px !important;
      text-align: left !important;
      box-shadow: 0 1px 0 var(--ed-faint) !important;
      transition: transform 0.2s, box-shadow 0.2s !important;
      position: relative !important;
    }
    .mini-card::before {
      content: "" !important;
      position: absolute !important;
      left: -1px !important; right: -1px !important; top: 0 !important;
      height: 3px !important;
      background: var(--ed-ink) !important;
    }
    .mini-card:hover {
      transform: translateY(-2px) !important;
      box-shadow: 0 6px 20px rgba(15, 23, 42, 0.08) !important;
    }
    .mini-card.mc-red::before    { background: var(--ed-accent) !important; }
    .mini-card.mc-green::before  { background: var(--ed-teal) !important; }
    .mini-card.mc-orange::before { background: var(--ed-gold) !important; }
    .mini-card.mc-blue::before   { background: var(--ed-indigo) !important; }

    /* Hero Card - 黑底白字 */
    .mini-card.mc-core {
      background: var(--ed-ink) !important;
      color: white !important;
      border: none !important;
      grid-column: span 1 !important;
    }
    .mini-card.mc-core::before { background: var(--ed-accent) !important; height: 5px !important; }
    .mini-card.mc-core .mc-title { color: white !important; }
    .mini-card.mc-core .mc-desc { color: #d1d5db !important; }

    /* 数字/emoji 超大显示 */
    .mini-card .mc-icon {
      font-family: "Songti SC", "Noto Serif SC", serif !important;
      font-size: 32px !important;
      font-weight: 900 !important;
      color: var(--ed-accent) !important;
      display: block !important;
      margin-bottom: 8px !important;
      line-height: 1 !important;
      letter-spacing: -1px !important;
    }
    .mini-card.mc-core .mc-icon { color: white !important; font-size: 36px !important; }
    .mini-card .mc-title {
      font-family: "Songti SC", "Noto Serif SC", serif !important;
      font-size: 16px !important;
      font-weight: 700 !important;
      color: var(--ed-ink) !important;
      margin-bottom: 6px !important;
      letter-spacing: 0.5px !important;
    }
    .mini-card .mc-desc {
      font-size: 12.5px !important;
      color: var(--ed-gray) !important;
      line-height: 1.65 !important;
    }

    /* === Tree - 编辑风版式 === */
    .tree {
      background: var(--ed-pure) !important;
      border: 1px solid var(--ed-faint) !important;
      border-left: 4px solid var(--ed-ink) !important;
      border-radius: 0 !important;
      padding: 18px 22px !important;
      margin: 14px 0 20px !important;
      box-shadow: none !important;
    }
    .tree > ul > li {
      font-family: "Songti SC", "Noto Serif SC", serif !important;
      font-size: 16px !important;
      font-weight: 700 !important;
      color: var(--ed-ink) !important;
      padding-left: 26px !important;
      margin: 14px 0 8px !important;
    }
    .tree > ul > li::before {
      content: "▸" !important;
      color: var(--ed-accent) !important;
      left: 6px !important;
      top: 0 !important;
      font-size: 14px !important;
    }
    .tree ul ul li {
      font-family: -apple-system, "PingFang SC", sans-serif !important;
      font-size: 14px !important;
      font-weight: normal !important;
      color: var(--ed-ink2) !important;
      padding-left: 22px !important;
      margin: 6px 0 !important;
    }
    .tree ul ul li::before {
      content: "—" !important;
      color: var(--ed-gray) !important;
      font-family: serif !important;
    }
    .tree ul ul ul li::before {
      content: "·" !important;
      color: var(--ed-gray) !important;
    }
    .tree.t-red    > ul > li::before { color: var(--ed-accent) !important; }
    .tree.t-green  > ul > li::before { color: var(--ed-teal) !important; }
    .tree.t-orange > ul > li::before { color: var(--ed-gold) !important; }
    .tree.t-purple > ul > li::before { color: #6d28d9 !important; }
    .tree.t-red    { border-left-color: var(--ed-accent) !important; }
    .tree.t-green  { border-left-color: var(--ed-teal) !important; }
    .tree.t-orange { border-left-color: var(--ed-gold) !important; }
    .tree.t-purple { border-left-color: #6d28d9 !important; }

    /* === Badge - 直角胶囊 === */
    .badge {
      display: inline-block !important;
      font-size: 11px !important;
      padding: 3px 10px !important;
      background: var(--ed-ink) !important;
      color: white !important;
      font-weight: 600 !important;
      letter-spacing: 1px !important;
      border-radius: 0 !important;
      vertical-align: middle !important;
    }
    .badge.b-red    { background: var(--ed-accent) !important; }
    .badge.b-blue   { background: var(--ed-indigo) !important; }
    .badge.b-green  { background: var(--ed-teal) !important; }
    .badge.b-orange { background: var(--ed-gold) !important; }
    .badge.b-purple { background: #6d28d9 !important; }

    /* === Key Box - 引文风 === */
    .key-box {
      background: var(--ed-pure) !important;
      border: 1px solid var(--ed-faint) !important;
      border-left: 4px solid var(--ed-accent) !important;
      padding: 16px 20px !important;
      margin: 16px 0 !important;
      border-radius: 0 !important;
      position: relative !important;
    }
    .key-box .box-label {
      background: var(--ed-accent) !important;
      color: white !important;
      padding: 3px 10px !important;
      font-size: 11px !important;
      font-weight: 600 !important;
      letter-spacing: 1.5px !important;
      border-radius: 0 !important;
      display: inline-block !important;
      margin-bottom: 8px !important;
      position: static !important;
    }

    /* === Exam Box - 朱红考试框 === */
    .exam-box {
      background: var(--ed-accent2) !important;
      border: 1px solid #fca5a5 !important;
      border-left: 4px solid var(--ed-accent) !important;
      padding: 14px 18px !important;
      border-radius: 0 !important;
    }
    .exam-box .box-label {
      background: var(--ed-accent) !important;
      color: white !important;
      padding: 3px 10px !important;
      font-size: 11px !important;
      font-weight: 600 !important;
      letter-spacing: 1.5px !important;
      border-radius: 0 !important;
      display: inline-block !important;
      margin-bottom: 8px !important;
    }

    /* === Warn Box - 金黄警示 === */
    .warn-box {
      background: var(--ed-gold2) !important;
      border: 1px solid #fbbf24 !important;
      border-left: 4px solid var(--ed-gold) !important;
      padding: 14px 18px !important;
      border-radius: 0 !important;
    }
    .warn-box .box-label {
      background: var(--ed-gold) !important;
      color: white !important;
      padding: 3px 10px !important;
      font-size: 11px !important;
      font-weight: 600 !important;
      letter-spacing: 1.5px !important;
      border-radius: 0 !important;
      display: inline-block !important;
      margin-bottom: 8px !important;
    }

    /* === Mnemonic - 黑底大字口诀 === */
    .mnemonic-box {
      background: var(--ed-ink) !important;
      color: white !important;
      padding: 22px 26px !important;
      border-radius: 0 !important;
      margin: 20px 0 !important;
      position: relative !important;
      border: none !important;
    }
    .mnemonic-box::after {
      content: "★" !important;
      position: absolute !important;
      top: 14px !important;
      right: 20px !important;
      font-size: 22px !important;
      color: var(--ed-accent) !important;
    }
    .mnemonic-box .box-label {
      background: var(--ed-accent) !important;
      color: white !important;
      padding: 3px 10px !important;
      font-size: 11px !important;
      font-weight: 600 !important;
      letter-spacing: 1.5px !important;
      border-radius: 0 !important;
      display: inline-block !important;
      margin-bottom: 10px !important;
    }
    .mnemonic-box .mnemonic-text {
      font-family: "Songti SC", "Noto Serif SC", serif !important;
      font-size: 19px !important;
      color: white !important;
      text-align: center !important;
      line-height: 2 !important;
      font-weight: 600 !important;
    }

    /* === Tip Box === */
    .tip-box {
      background: var(--ed-pure) !important;
      border: 1px solid var(--ed-faint) !important;
      border-left: 4px solid var(--ed-ink) !important;
      padding: 14px 18px !important;
      border-radius: 0 !important;
    }

    /* === 强调色 === */
    strong { color: var(--ed-ink) !important; font-weight: 700 !important; }
    .mark-y, .mark-p, .mark-g, .mark-o, .mark-b {
      padding: 1px 6px !important;
      border-radius: 0 !important;
      font-weight: 600 !important;
    }
    .mark-y { background: #fef3c7 !important; color: var(--ed-ink) !important; }
    .mark-p { background: #fce7f3 !important; color: var(--ed-ink) !important; }
    .mark-g { background: #d1fae5 !important; color: var(--ed-ink) !important; }
    .mark-o { background: #fed7aa !important; color: var(--ed-ink) !important; }
    .mark-b { background: #dbeafe !important; color: var(--ed-ink) !important; }

    /* === Section Divider === */
    .section-divider {
      text-align: center !important;
      color: var(--ed-gray) !important;
      letter-spacing: 8px !important;
      margin: 40px 0 !important;
      font-size: 14px !important;
    }

    /* ==========================================================================
       Chapter Masthead · 章节杂志刊头 v6
       ========================================================================== */
    .ch-mast {
      background: #0a0a0a;
      color: #fff;
      margin: -16px -16px 0;
      position: relative;
      overflow: hidden;
    }
    .ch-mast .mast-strip-top {
      border-bottom: 1px solid #2a2a2a;
      padding: 10px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 11px;
      letter-spacing: 2px;
      color: #888;
      font-family: 'Songti SC', serif;
      flex-wrap: wrap;
      gap: 8px;
    }
    .ch-mast .mast-strip-top a { color: #dc2626; text-decoration: none; }
    .ch-mast .mast-strip-top a:hover { text-decoration: underline; }
    .ch-mast .mast-strip-top .sep { margin: 0 6px; color: #444; }
    .ch-mast .mast-strip-top .vol { color: #dc2626; letter-spacing: 3px; }
    .ch-mast .mast-main {
      padding: 56px 24px 40px;
      text-align: center;
      position: relative;
    }
    .ch-mast .mast-bg {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      font-family: 'Songti SC', serif;
      font-size: 280px;
      font-weight: 900;
      color: #1a1a1a;
      line-height: 1;
      z-index: 0;
      letter-spacing: -10px;
      user-select: none;
    }
    .ch-mast .mast-content { position: relative; z-index: 1; }
    .ch-mast .vol-label {
      font-family: 'Songti SC', serif;
      font-size: 12px;
      letter-spacing: 6px;
      color: #dc2626;
      margin-bottom: 16px;
    }
    .ch-mast h1 {
      font-family: 'Songti SC', serif;
      font-size: 56px;
      font-weight: 900;
      letter-spacing: 8px;
      margin: 0 0 18px;
      line-height: 1.1;
    }
    .ch-mast .red-tag {
      display: inline-block;
      background: #dc2626;
      color: #fff;
      padding: 6px 18px;
      font-family: 'Songti SC', serif;
      font-size: 13px;
      letter-spacing: 3px;
      margin-bottom: 14px;
    }
    .ch-mast .meta {
      margin: 0;
      font-size: 13px;
      color: #ccc;
      letter-spacing: 1px;
    }
    .ch-mast .meta strong { color: #ffd966; }
    .ch-mast .mast-strip-bot {
      border-top: 1px solid #2a2a2a;
      padding: 12px 24px;
      display: flex;
      justify-content: space-around;
      font-family: 'Songti SC', serif;
      font-size: 12px;
      color: #ccc;
      letter-spacing: 2px;
      flex-wrap: wrap;
      gap: 8px;
    }
    .ch-mast .mast-strip-bot span strong { color: #ffd966; font-size: 14px; }

    /* ==========================================================================
       Magazine TOC · 杂志目录 v6
       ========================================================================== */
    .ch-toc-mag {
      margin: 32px 0;
      border: 1px solid #0a0a0a;
      background: #fff;
    }
    .ch-toc-mag .toc-head {
      background: #0a0a0a;
      color: #fff;
      padding: 12px 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 8px;
    }
    .ch-toc-mag .toc-head .label {
      font-family: 'Songti SC', serif;
      font-size: 14px;
      letter-spacing: 3px;
      color: #ffd966;
    }
    .ch-toc-mag .toc-head .meta {
      font-family: 'Songti SC', serif;
      font-size: 12px;
      color: #ccc;
      letter-spacing: 2px;
    }
    .ch-toc-mag .toc-body { padding: 0; }
    .ch-toc-mag .toc-sec {
      display: grid;
      grid-template-columns: 84px 1fr;
      padding: 16px 18px;
      border-bottom: 1px dashed #e0d8cc;
      transition: background 0.2s;
    }
    .ch-toc-mag .toc-sec:last-child { border-bottom: none; }
    .ch-toc-mag .toc-sec:hover { background: #faf9f7; }
    .ch-toc-mag .toc-num-block {
      text-align: center;
      padding-right: 12px;
      border-right: 2px solid #0a0a0a;
    }
    .ch-toc-mag .toc-num {
      font-family: 'Songti SC', serif;
      font-size: 32px;
      font-weight: 900;
      color: #dc2626;
      line-height: 1;
    }
    .ch-toc-mag .toc-num-label {
      font-size: 10px;
      color: #6b6358;
      letter-spacing: 2px;
      margin-top: 6px;
      font-family: 'Songti SC', serif;
    }
    .ch-toc-mag .toc-content { padding-left: 16px; }
    .ch-toc-mag .toc-sec-title {
      font-family: 'Songti SC', serif;
      font-size: 18px;
      font-weight: bold;
      margin: 0 0 8px;
      line-height: 1.3;
    }
    .ch-toc-mag .toc-sec-title a {
      color: #0a0a0a;
      text-decoration: none;
    }
    .ch-toc-mag .toc-sec-title a:hover { color: #dc2626; }
    .ch-toc-mag .toc-sub {
      font-size: 13px;
      color: #6b6358;
      line-height: 1.9;
    }
    .ch-toc-mag .toc-sub strong {
      color: #dc2626;
      font-weight: normal;
    }
    .ch-toc-mag .toc-sub em {
      color: #b0a89c;
      font-style: normal;
      font-size: 12px;
    }
    .ch-toc-mag .toc-status {
      display: inline-block;
      font-size: 10px;
      font-family: 'Songti SC', serif;
      letter-spacing: 1px;
      padding: 2px 6px;
      margin-left: 6px;
      vertical-align: middle;
    }
    .ch-toc-mag .toc-status.done { background: #0a0a0a; color: #ffd966; }
    .ch-toc-mag .toc-status.doing { background: #dc2626; color: #fff; }
    .ch-toc-mag .toc-status.todo { background: #f5f5f0; color: #6b6358; border: 1px solid #c4b9a8; }

    @media (max-width: 720px) {
      .ch-mast h1 { font-size: 36px !important; letter-spacing: 4px !important; }
      .ch-mast .mast-bg { font-size: 180px !important; }
      .ch-mast .mast-main { padding: 40px 16px 28px !important; }
      .ch-toc-mag .toc-sec { grid-template-columns: 60px 1fr; padding: 12px; }
      .ch-toc-mag .toc-num { font-size: 24px; }
      .ch-toc-mag .toc-sec-title { font-size: 16px; }
      .ch-toc-mag .toc-content { padding-left: 10px; }
    }