/* ============================================
   财搭子投研文章 - Swiss Modernism 2.0 + Luxury Editorial
   设计方向: Swiss网格系统 + 奢华编辑风格 + A股文化
   ============================================ */

/* === Google Fonts引入 - Luxury Minimalist字体组合 === */
@import url('https://fonts.googleapis.com/css2?family=Bodoni+Moda:ital,wght@0,400;0,500;0,600;0,700;0,900;1,400;1,500&family=Jost:wght@300;400;500;600;700&display=swap');

/* === CSS变量 - Swiss色彩系统 === */
:root {
  /* A股色彩主题 - 鲜明专业 */
  --color-red: #B91C1C;
  --color-red-light: #FEF2F2;
  --color-red-dark: #991B1B;
  --color-green: #15803D;
  --color-green-light: #F0FDF4;
  --color-blue: #0369A1;
  --color-blue-light: #F0F9FF;
  --color-purple: #7C3AED;
  --color-purple-light: #F5F3FF;

  /* 渐变色 - Swiss极简 */
  --gradient-red: linear-gradient(135deg, #DC2626 0%, #B91C1C 100%);
  --gradient-hero: linear-gradient(180deg, #FEF2F2 0%, #FFFFFF 50%, #FAFAFA 100%);
  --gradient-blue: linear-gradient(135deg, #0284C7 0%, #0369A1 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.85) 100%);

  /* Swiss中性色 - 高对比度 */
  --bg-dark: #0A0A0A;
  --bg-card: #FFFFFF;
  --bg-light: #FAFAFA;
  --bg-subtle: #F5F5F5;
  --text-primary: #0A0A0A;
  --text-secondary: #1F2937;
  --text-tertiary: #4B5563;
  --text-muted: #6B7280;
  --border-color: #E5E7EB;
  --border-light: #F3F4F6;

  /* 阴影系统 - Swiss极简 */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.10);
  --shadow-xl: 0 16px 40px rgba(0, 0, 0, 0.12);

  /* Swiss间距系统 - 数学比例 */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;
  --space-3xl: 96px;
  --space-4xl: 128px;

  /* 圆角 - Swiss极简 */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --radius-xl: 12px;

  /* 字体 - Luxury Minimalist */
  --font-display: 'Bodoni Moda', 'Times New Roman', serif;
  --font-heading: 'Bodoni Moda', 'Times New Roman', serif;
  --font-body: 'Jost', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-number: 'Bodoni Moda', serif;

  /* 过渡 - Swiss精确 */
  --transition-fast: 0.15s ease-out;
  --transition-base: 0.25s ease-out;
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === 全局重置 - Swiss极简 === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--text-secondary);
  background: var(--bg-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* === 背景纹理 - Swiss网格 === */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.015) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
  z-index: -1;
}

/* === 排版系统 - Swiss精确 === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.15;
  color: var(--text-primary);
  letter-spacing: -0.025em;
}

h1 {
  font-size: clamp(40px, 7vw, 64px);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

h2 {
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 600;
  letter-spacing: -0.03em;
}

h3 {
  font-size: clamp(22px, 4vw, 28px);
  font-weight: 500;
}

h4 {
  font-size: 19px;
  font-weight: 500;
}

p {
  margin-bottom: 1.5em;
  color: var(--text-secondary);
}

a {
  color: var(--color-blue);
  text-decoration: none;
  transition: color var(--transition-base);
  cursor: pointer;
}

a:hover {
  color: var(--color-purple);
}

/* === 数字样式 - Bodoni优雅 === */
.number {
  font-family: var(--font-number);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.number-large {
  font-family: var(--font-number);
  font-size: 1.15em;
  font-weight: 600;
}

/* === 布局容器 - Swiss网格 === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* === 文章Hero区 - Swiss极简大气 === */
.article-hero {
  position: relative;
  min-height: 75vh;
  background: var(--gradient-hero);
  padding: var(--space-4xl) 0 var(--space-3xl);
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
}

/* Hero区装饰 - Swiss几何 */
.article-hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-red);
}

/* 面包屑导航 */
.breadcrumb {
  position: relative;
  z-index: 1;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.breadcrumb a {
  color: var(--text-tertiary);
  transition: color var(--transition-base);
}

.breadcrumb a:hover {
  color: var(--color-red);
}

/* 文章标题 - Bodoni优雅 */
.article-title {
  position: relative;
  z-index: 1;
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 600;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  letter-spacing: -0.04em;
  color: var(--text-primary);
}

/* 文章元信息 */
.article-meta {
  position: relative;
  z-index: 1;
  display: flex;
  gap: var(--space-xl);
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.article-meta span {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.article-meta span::before {
  content: '';
  width: 5px;
  height: 5px;
  background: var(--color-red);
  border-radius: 50%;
}

/* === 主布局 - Swiss网格 === */
.main-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-3xl);
  max-width: 1200px;
  margin: var(--space-3xl) auto 0;
  padding: 0 var(--space-lg);
}

/* === 文章内容区 === */
.article-content {
  min-width: 0;
}

/* === 卡片基础样式 - Swiss极简 === */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: box-shadow var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

/* === AI摘要卡片 - Swiss编辑风格 === */
.ai-summary {
  background: linear-gradient(135deg, var(--color-red-light) 0%, rgba(255, 255, 255, 0.95) 100%);
  border-left: 3px solid var(--color-red);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow-sm);
}

.ai-summary h2 {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-red);
  margin-bottom: var(--space-md);
}

.ai-summary p {
  font-size: 19px;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* === 核心观点表格 - Swiss极简 === */
.key-points {
  margin-bottom: var(--space-xl);
}

.key-points h2 {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: var(--space-md);
  color: var(--color-blue);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.key-points table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.key-points thead tr {
  background: var(--gradient-red);
}

.key-points th {
  color: white;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: var(--space-md) var(--space-lg);
  text-align: left;
}

.key-points th:first-child {
  border-radius: var(--radius-lg) 0 0 0;
}

.key-points th:last-child {
  border-radius: 0 var(--radius-lg) 0 0;
}

.key-points td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border-light);
  font-size: 15px;
  background: white;
  transition: background-color var(--transition-base);
}

.key-points tr:last-child td {
  border-bottom: none;
}

.key-points tr:last-child td:first-child {
  border-radius: 0 0 0 var(--radius-lg);
}

.key-points tr:last-child td:last-child {
  border-radius: 0 0 var(--radius-lg) 0;
}

.key-points tr:hover td {
  background-color: var(--color-red-light);
}

/* === 章节卡片 - Swiss极简 === */
.section-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: box-shadow var(--transition-base);
}

.section-card:hover {
  box-shadow: var(--shadow-md);
}

.section-card h2 {
  font-size: 32px;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-red);
}

.section-card h3 {
  font-size: 22px;
  color: var(--color-blue);
  margin: var(--space-xl) 0 var(--space-md);
}

.section-card h4 {
  font-size: 18px;
  color: var(--color-purple);
  margin: var(--space-lg) 0 var(--space-sm);
}

/* === 摘录块 - Swiss编辑风格 === */
blockquote {
  border-left: 3px solid var(--color-red);
  background: var(--bg-subtle);
  padding: var(--space-lg);
  margin: var(--space-lg) 0;
  font-style: normal;
  color: var(--text-secondary);
}

blockquote strong {
  color: var(--color-red);
}

/* === 智能体卡片网格 - Swiss极简 === */
.agent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.agent-card {
  background: linear-gradient(135deg, var(--bg-subtle) 0%, white 100%);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  border-left: 3px solid var(--color-blue);
  transition: all var(--transition-base);
  cursor: default;
}

.agent-card:hover {
  box-shadow: var(--shadow-md);
  border-left-color: var(--color-red);
}

.agent-name {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 17px;
  color: var(--color-red);
  margin-bottom: var(--space-sm);
}

.agent-desc {
  font-size: 14px;
  color: var(--text-tertiary);
  line-height: 1.6;
}

/* === 流程图样式 === */
.flow-diagram {
  text-align: center;
  padding: var(--space-xl);
  background: var(--bg-subtle);
  border-radius: var(--radius-lg);
  margin: var(--space-lg) 0;
  border: 1px solid var(--border-light);
}

.flow-step {
  display: inline-block;
  background: white;
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-xs);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
}

.flow-step:hover {
  background-color: var(--color-blue-light);
  border-color: var(--color-blue);
}

/* === 团队表格 === */
.team-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: var(--space-lg) 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.team-table th {
  background: var(--gradient-blue);
  color: white;
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.team-table td {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-light);
  font-size: 15px;
  background: white;
}

.team-table tr:last-child td {
  border-bottom: none;
}

.team-table tr:hover td {
  background: var(--bg-subtle);
}

.role-highlight {
  color: var(--color-red);
  font-weight: 600;
}

/* === FAQ手风琴 - Swiss精确动画 === */
.faq-section {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.faq-section h2 {
  font-size: 26px;
  margin-bottom: var(--space-lg);
  color: var(--color-blue);
}

.faq-item {
  border-bottom: 1px solid var(--border-light);
  padding: var(--space-lg) 0;
  transition: all var(--transition-base);
}

.faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--color-blue);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 16px;
  transition: color var(--transition-base);
}

.faq-question:hover {
  color: var(--color-red);
}

.faq-question::after {
  content: '+';
  font-size: 24px;
  color: var(--color-red);
  font-weight: 400;
  transition: transform var(--transition-smooth);
  flex-shrink: 0;
  margin-left: var(--space-md);
}

.faq-item.active .faq-question::after {
  content: '−';
}

.faq-item.active {
  padding-left: var(--space-md);
  border-left: 2px solid var(--color-red);
}

.faq-answer {
  margin-top: 0;
  max-height: 0;
  overflow: hidden;
  color: var(--text-tertiary);
  transition: all var(--transition-smooth);
  opacity: 0;
}

.faq-item.active .faq-answer {
  margin-top: var(--space-md);
  max-height: 500px;
  opacity: 1;
}

/* === 文章导航 === */
.article-nav {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-3xl);
  padding: var(--space-lg);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.article-nav a {
  flex: 1;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-subtle);
  border-radius: var(--radius-md);
  text-align: center;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  transition: all var(--transition-base);
  border: 1px solid transparent;
  cursor: pointer;
}

.article-nav a:hover {
  background: var(--color-red);
  color: white;
  border-color: var(--color-red);
}

.article-nav .home {
  flex: 0 0 auto;
  min-width: 140px;
}

/* === 目录侧边栏 - Swiss极简 === */
.toc-sidebar {
  position: sticky;
  top: var(--space-xl);
  height: fit-content;
  background: var(--gradient-glass);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  max-height: calc(100vh - var(--space-2xl));
  overflow-y: auto;
}

.toc-sidebar h3 {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-purple);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.toc-sidebar ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.toc-sidebar li {
  margin: 0;
}

.toc-sidebar a {
  display: block;
  padding: 8px 12px;
  color: var(--text-tertiary);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  position: relative;
  cursor: pointer;
}

.toc-sidebar a::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 0;
  background: var(--color-red);
  transition: height var(--transition-base);
}

.toc-sidebar a:hover,
.toc-sidebar a.active {
  background: rgba(185, 28, 28, 0.08);
  color: var(--color-red);
}

.toc-sidebar a:hover::before,
.toc-sidebar a.active::before {
  height: 18px;
}

.toc-sidebar .toc-level-2 {
  padding-left: var(--space-md);
}

/* === 页脚 === */
.article-footer {
  background: var(--bg-subtle);
  padding: var(--space-3xl) var(--space-lg);
  text-align: center;
  border-top: 1px solid var(--border-color);
  margin-top: var(--space-4xl);
}

.article-footer p {
  font-size: 14px;
  color: var(--text-muted);
  max-width: 700px;
  margin: var(--space-sm) auto;
}

/* === 专题文章：编辑型投研索引 === */
.category-anchor-page,
.category-index-page {
  background: #f7f5ef;
  color: #25221d;
}

.category-anchor-page::before,
.category-index-page::before {
  background-size: 64px 64px;
  opacity: .65;
}

.category-hero {
  border-top: 3px solid #8c2f20;
  border-bottom: 1px solid #d8ccba;
  background: linear-gradient(180deg, #faf6ed 0%, #f7f5ef 100%);
  padding: clamp(40px, 7vw, 76px) 0 clamp(30px, 5vw, 52px);
}

.category-hero .container {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: clamp(28px, 6vw, 72px);
  align-items: end;
}

.category-kicker {
  display: inline-flex;
  color: #8c2f20;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.category-title {
  font-size: clamp(34px, 5.7vw, 68px);
  line-height: 1.05;
  letter-spacing: 0;
  max-width: 920px;
  margin-bottom: 18px;
}

.category-lede {
  color: #3c3730;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.72;
  max-width: 880px;
  margin: 0;
}

.category-facts {
  border-left: 1px solid #cdbfae;
  padding-left: 24px;
  display: grid;
  gap: 14px;
  color: #5c534a;
  font-size: 14px;
}

.category-facts strong {
  color: #1f1b16;
  font-size: 15px;
}

.category-layout {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: clamp(32px, 6vw, 72px);
  padding: clamp(42px, 7vw, 78px) 0;
}

.category-main {
  display: grid;
  gap: clamp(40px, 5vw, 64px);
}

.category-section {
  border-top: 1px solid #cdbfae;
  padding-top: 26px;
}

.category-section h2 {
  font-size: clamp(26px, 4vw, 42px);
  letter-spacing: 0;
  margin-bottom: 18px;
}

.category-section > p {
  max-width: 820px;
  line-height: 1.9;
  font-size: 17px;
  color: #2b2823;
}

.category-flow {
  counter-reset: category-step;
  display: grid;
  gap: 0;
  list-style: none;
  margin-top: 18px;
}

.category-flow li {
  counter-increment: category-step;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 18px;
  padding: 18px 0;
  border-top: 1px solid #e1d7c8;
  line-height: 1.72;
}

.category-flow li::before {
  content: counter(category-step, decimal-leading-zero);
  color: #8c2f20;
  font-family: var(--font-number);
  font-size: 24px;
  line-height: 1;
}

.category-flow strong {
  display: block;
  color: #1f1b16;
  margin-bottom: 4px;
}

.category-table {
  width: 100%;
  border-collapse: collapse;
  background: #fffdfa;
  border-top: 1px solid #cdbfae;
  border-bottom: 1px solid #cdbfae;
}

.category-table th,
.category-table td {
  padding: 18px 16px;
  border-bottom: 1px solid #e1d7c8;
  text-align: left;
  vertical-align: top;
  line-height: 1.65;
  font-size: 15px;
}

.category-table th {
  color: #8c2f20;
  width: 22%;
  font-weight: 800;
}

.category-table tr:last-child th,
.category-table tr:last-child td {
  border-bottom: 0;
}

.category-example-table {
  margin-top: 18px;
}

.category-question-list {
  list-style: none;
  margin: 18px 0 0;
  border-top: 1px solid #d8ccba;
}

.category-question-list li {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  padding: 16px 0;
  margin: 0;
  border-bottom: 1px solid #d8ccba;
  color: #2b2823;
  line-height: 1.76;
}

.category-question-list li::before {
  content: "问";
  color: #8c2f20;
  font-weight: 900;
  line-height: 1.76;
}

.category-link-list {
  display: grid;
  gap: 0;
  border-top: 1px solid #d8ccba;
}

.category-link-list a {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid #d8ccba;
  color: inherit;
}

.category-link-list span {
  color: #8c2f20;
  font-weight: 800;
  font-size: 13px;
}

.category-link-list strong {
  display: block;
  color: #1f1b16;
  margin-bottom: 4px;
}

.category-link-list p {
  margin: 0;
  color: #62584d;
  line-height: 1.65;
  font-size: 15px;
}

.category-side {
  position: sticky;
  top: 28px;
  height: fit-content;
  display: grid;
  gap: 18px;
}

.category-side-block {
  background: #1f1b16;
  color: #fff8ee;
  padding: 22px;
}

.category-side-block h2,
.category-side-block h3 {
  color: #fff8ee;
  font-family: var(--font-body);
  letter-spacing: 0;
  font-size: 18px;
  margin-bottom: 10px;
}

.category-side-block p {
  color: #d9cdbc;
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 14px;
}

.category-actions {
  display: grid;
  gap: 10px;
}

.category-actions a {
  background: #fff8ee;
  color: #1f1b16;
  display: block;
  font-size: 14px;
  font-weight: 800;
  padding: 11px 12px;
  text-align: center;
}

.category-qr {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 12px;
}

.category-qr span {
  display: grid;
  gap: 6px;
  justify-items: center;
  color: #d9cdbc;
  font-size: 12px;
}

.category-qr img {
  width: 82px;
  height: 82px;
  background: #fff;
  padding: 4px;
}

.category-note {
  border: 1px solid #d8ccba;
  padding: 18px;
  color: #5c534a;
  font-size: 14px;
  line-height: 1.7;
  background: #fffdfa;
}

.category-index-hero {
  padding: clamp(42px, 7vw, 78px) 0 34px;
  border-top: 3px solid #8c2f20;
  border-bottom: 1px solid #d8ccba;
  background: #faf6ed;
}

.category-index-hero .container {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 30px;
  align-items: end;
}

.category-index-hero h1 {
  font-size: clamp(38px, 5.8vw, 72px);
  letter-spacing: 0;
  margin-bottom: 14px;
}

.category-index-hero p {
  max-width: 760px;
  color: #3c3730;
  font-size: 19px;
  line-height: 1.75;
  margin: 0;
}

.index-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.index-actions a {
  border: 1px solid #8c2f20;
  color: #8c2f20;
  font-weight: 800;
  padding: 10px 14px;
}

.index-actions a:first-child {
  background: #8c2f20;
  color: #fff8ee;
}

.index-content {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 42px 0 72px;
  display: grid;
  gap: 58px;
}

.index-section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 22px;
  align-items: end;
  border-bottom: 1px solid #cdbfae;
  padding-bottom: 16px;
  margin-bottom: 8px;
}

.index-section-head h2 {
  letter-spacing: 0;
  font-size: clamp(28px, 4vw, 46px);
}

.index-section-head p {
  margin: 0;
  color: #62584d;
  max-width: 560px;
}

.index-pathway-section {
  padding-bottom: 10px;
}

.index-pathway-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.index-pathway {
  background: #fffdfa;
  border: 1px solid #d8ccba;
  border-radius: 6px;
  padding: 20px;
  display: grid;
  gap: 12px;
  align-content: start;
}

.index-pathway > span {
  color: #8c2f20;
  font-family: var(--font-number);
  font-size: 22px;
  line-height: 1;
}

.index-pathway h3 {
  font-size: clamp(22px, 2.4vw, 30px);
  letter-spacing: 0;
}

.index-pathway p {
  color: #62584d;
  font-size: 15px;
  line-height: 1.7;
  margin: 0 0 4px;
}

.index-pathway .content-matrix-links {
  border-top-color: #cdbfae;
}

.index-pathway .content-matrix-links a {
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 12px;
  padding: 10px 0;
}

.content-matrix {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 34px;
  margin-top: 22px;
}

.content-matrix-group {
  border-top: 1px solid #cdbfae;
  padding-top: 18px;
}

.content-matrix-group header {
  min-height: 126px;
}

.content-matrix-group h3 {
  font-size: clamp(22px, 2.5vw, 32px);
  letter-spacing: 0;
  margin-bottom: 10px;
}

.content-matrix-group p {
  color: #62584d;
  font-size: 15px;
  line-height: 1.68;
  margin: 0;
}

.content-matrix-links {
  display: grid;
  gap: 0;
  border-top: 1px solid #d8ccba;
}

.content-matrix-links a {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid #e1d7c8;
  color: inherit;
}

.content-matrix-links span {
  color: #8c2f20;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.55;
}

.content-matrix-links strong {
  color: #1f1b16;
  font-size: 15px;
  line-height: 1.55;
  font-weight: 800;
}

.index-topic-list {
  display: grid;
  gap: 0;
}

.index-topic-list a {
  display: grid;
  grid-template-columns: 104px minmax(0, 1.1fr) minmax(220px, .9fr) 96px;
  gap: 18px;
  align-items: baseline;
  padding: 20px 0;
  border-bottom: 1px solid #d8ccba;
  color: inherit;
}

.index-topic-list em {
  color: #8c2f20;
  font-family: var(--font-number);
  font-style: normal;
  font-size: clamp(16px, 1.6vw, 22px);
  white-space: nowrap;
}

.index-topic-list strong {
  color: #1f1b16;
  font-size: clamp(19px, 2vw, 26px);
  line-height: 1.25;
}

.index-topic-list p {
  margin: 0;
  color: #62584d;
  font-size: 15px;
  line-height: 1.65;
}

.index-topic-list span {
  color: #8c2f20;
  font-weight: 800;
  font-size: 13px;
  text-align: right;
}

@media (max-width: 900px) {
  .category-hero .container,
  .category-layout,
  .category-index-hero .container {
    grid-template-columns: 1fr;
  }

  .category-side {
    position: static;
  }

  .index-actions {
    justify-content: flex-start;
  }

  .content-matrix {
    grid-template-columns: 1fr;
  }

  .index-pathway-grid {
    grid-template-columns: 1fr 1fr;
  }

  .content-matrix-group header {
    min-height: 0;
    margin-bottom: 12px;
  }

  .index-topic-list a {
    grid-template-columns: 54px minmax(0, 1fr);
  }

  .index-topic-list p,
  .index-topic-list span {
    grid-column: 2;
    text-align: left;
  }
}

@media (max-width: 620px) {
  .category-link-list a,
  .category-table th,
  .category-table td {
    display: block;
    width: 100%;
  }

  .category-link-list a {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .content-matrix-links a {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .index-pathway-grid {
    grid-template-columns: 1fr;
  }

  .index-pathway {
    padding: 18px;
  }

  .category-flow li {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 12px;
  }
}

/* === 移动端目录按钮 === */
.mobile-toc-toggle {
  display: none;
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-lg);
  width: 56px;
  height: 56px;
  background: var(--color-purple);
  color: white;
  border: none;
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  z-index: 1000;
  font-size: 24px;
  transition: all var(--transition-base);
}

.mobile-toc-toggle:hover {
  background: var(--color-blue);
}

/* === 动画关键帧 === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* === 实用类 === */
.up {
  color: var(--color-red);
  font-weight: 600;
}

.down {
  color: var(--color-green);
  font-weight: 600;
}

mark {
  background: linear-gradient(180deg, transparent 60%, var(--color-red-light) 60%);
  padding: 0 3px;
}

/* === 列表样式 === */
ul, ol {
  margin-left: var(--space-lg);
  margin-bottom: var(--space-md);
}

li {
  margin-bottom: 0.4em;
}

/* === 代码块 === */
code {
  font-family: var(--font-mono);
  background: var(--bg-subtle);
  padding: 3px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.9em;
  color: var(--color-purple);
}

pre {
  background: var(--bg-subtle);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--space-lg) 0;
}

pre code {
  background: none;
  padding: 0;
  color: var(--text-primary);
}

/* === 响应式设计 === */
@media (max-width: 1024px) {
  .main-layout {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .toc-sidebar {
    display: none;
  }

  .mobile-toc-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .toc-sidebar.mobile-active {
    display: block;
    position: fixed;
    top: 50%;
    right: var(--space-lg);
    transform: translateY(-50%);
    max-height: 70vh;
    overflow-y: auto;
    z-index: 999;
    box-shadow: var(--shadow-xl);
  }
}

@media (max-width: 768px) {
  h1 { font-size: 32px; }
  h2 { font-size: 26px; }
  h3 { font-size: 22px; }

  .article-hero {
    padding: var(--space-2xl) 0 var(--space-xl);
    min-height: 50vh;
  }

  .section-card,
  .faq-section {
    padding: var(--space-lg);
  }

  .agent-grid {
    grid-template-columns: 1fr;
  }

  .article-nav {
    flex-direction: column;
  }

  .key-points table {
    display: block;
    overflow-x: auto;
  }

  .key-points th,
  .key-points td {
    padding: var(--space-sm);
    white-space: nowrap;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 16px;
  }

  .main-layout {
    padding: 0 var(--space-md);
  }

  .card,
  .section-card {
    padding: var(--space-md);
  }

  .ai-summary {
    padding: var(--space-lg);
  }

  .ai-summary p {
    font-size: 17px;
  }
}

/* === 打印样式 === */
@media print {
  .toc-sidebar,
  .article-nav,
  .mobile-toc-toggle {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .card,
  .section-card,
  .faq-section {
    box-shadow: none;
    border: 1px solid #ddd;
    page-break-inside: avoid;
  }
}

/* === 无障碍 - 高对比度模式 === */
@media (prefers-contrast: high) {
  :root {
    --border-color: #000;
    --text-tertiary: #000;
  }
}


/* === 主题导航 === */
.topic-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm) var(--space-md);
}

.topic-nav strong {
  color: var(--text-primary);
  margin-right: var(--space-xs);
}

.topic-nav a {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  color: var(--color-blue);
  font-size: 14px;
  font-weight: 600;
}

.topic-nav a:hover {
  background: var(--color-red-light);
  color: var(--color-red);
}