/* ============================================================
   组件专用样式 - 复杂的页面区块
   ============================================================ */

/* Hero 区段 */
.hero {
  position: relative;
  padding: 120px 0 80px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(124, 92, 255, 0.25) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
  filter: blur(80px);
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  font-size: 0.88rem;
  color: var(--text-2);
  margin-bottom: 28px;
  animation: fadeInUp 0.6s both;
}
.hero-eyebrow .pulse-dot {
  width: 8px; height: 8px;
  background: var(--brand-4);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--brand-4);
  animation: glow 2s infinite;
}
.hero h1 {
  margin-bottom: 28px;
  animation: fadeInUp 0.7s 0.1s both;
}
.hero-subtitle {
  max-width: 720px;
  margin: 0 auto 48px;
  font-size: 1.2rem;
  color: var(--text-2);
  line-height: 1.8;
  animation: fadeInUp 0.7s 0.2s both;
}
.hero-actions {
  display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
  animation: fadeInUp 0.7s 0.3s both;
  margin-bottom: 70px;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
  animation: fadeInUp 0.7s 0.4s both;
}
.hero-stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 16px;
  text-align: center;
}
.hero-stat-num {
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--grad-1);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
  margin-bottom: 4px;
}
.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-3);
}

/* 特性卡片网格 */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: all var(--tx-base);
  position: relative;
  overflow: hidden;
}
.feature-card::after {
  content: '';
  position: absolute;
  top: -50%; right: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle, rgba(124, 92, 255, 0.1), transparent 40%);
  opacity: 0;
  transition: opacity var(--tx-base);
  pointer-events: none;
}
.feature-card:hover { transform: translateY(-6px); border-color: var(--border-strong); }
.feature-card:hover::after { opacity: 1; }
.feature-icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--grad-1);
  display: grid; place-items: center;
  font-size: 1.6rem;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}
.feature-icon.icon-2 { background: var(--grad-2); }
.feature-icon.icon-3 { background: var(--grad-3); }
.feature-icon.icon-4 { background: var(--grad-4); }
.feature-card h3 { font-size: 1.3rem; margin-bottom: 12px; }
.feature-card p { color: var(--text-2); font-size: 0.96rem; line-height: 1.7; }

/* 时间线 - 学习路径 */
.timeline { position: relative; max-width: 1000px; margin: 0 auto; padding: 20px 0; }
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, transparent, var(--border-strong) 10%, var(--border-strong) 90%, transparent);
  transform: translateX(-50%);
}
.timeline-item {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 60px;
  position: relative;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-marker {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--bg-0);
  border: 3px solid var(--brand-1);
  box-shadow: 0 0 0 6px var(--bg-0), 0 0 20px rgba(124, 92, 255, 0.5);
  position: relative;
  z-index: 2;
}
.timeline-marker::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  background: var(--brand-1);
  opacity: 0.2;
  animation: glow 2s infinite;
}
.timeline-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--tx-base);
}
.timeline-content:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.timeline-content.right-side { grid-column: 3; }
.timeline-content.left-side { grid-column: 1; text-align: right; }
.timeline-phase {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brand-2);
  margin-bottom: 8px;
}
.timeline-content h3 { margin-bottom: 12px; font-size: 1.4rem; }
.timeline-content p { color: var(--text-2); font-size: 0.96rem; line-height: 1.7; }
.timeline-meta {
  margin-top: 16px;
  display: flex;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-3);
  flex-wrap: wrap;
}
.timeline-content.left-side .timeline-meta { justify-content: flex-end; }

/* 项目卡片 (开源项目库) */
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--tx-base);
  display: flex;
  flex-direction: column;
  height: 100%;
}
.project-card:hover {
  border-color: var(--brand-1);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.project-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
}
.project-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: grid; place-items: center;
  font-weight: 800;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.project-name { font-size: 1.15rem; font-weight: 700; color: var(--text-0); margin-bottom: 4px; line-height: 1.3; }
.project-desc {
  color: var(--text-2);
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}
.project-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.82rem;
  color: var(--text-3);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.project-meta span { display: inline-flex; align-items: center; gap: 4px; }
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.project-links { display: flex; gap: 10px; padding-top: 16px; border-top: 1px solid var(--border); }
.project-link {
  font-size: 0.85rem;
  color: var(--brand-2);
  display: inline-flex; align-items: center; gap: 4px;
}
.project-link:hover { color: var(--brand-1); }

/* Tab 切换 */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
  justify-content: center;
}
.tab {
  padding: 10px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  cursor: pointer;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-2);
  transition: all var(--tx-fast);
}
.tab:hover { background: var(--surface-strong); color: var(--text-0); }
.tab.active {
  background: var(--grad-1);
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 12px rgba(124, 92, 255, 0.3);
}
.tab-panel { display: none; animation: fadeInUp 0.4s both; }
.tab-panel.active { display: block; }

/* 过滤搜索 */
.filter-bar {
  display: flex;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-bottom: 32px;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.search-input {
  flex: 1;
  min-width: 200px;
  padding: 12px 18px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.95rem;
  color: var(--text-0);
  transition: border var(--tx-fast);
}
.search-input:focus { border-color: var(--brand-1); }
.filter-pills { display: flex; gap: 6px; flex-wrap: wrap; }
.filter-pill {
  padding: 6px 14px;
  font-size: 0.82rem;
  border-radius: 100px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  cursor: pointer;
  color: var(--text-2);
  transition: all var(--tx-fast);
}
.filter-pill:hover { color: var(--text-0); }
.filter-pill.active {
  background: var(--brand-1);
  color: white;
  border-color: var(--brand-1);
}

/* 代码块 */
.code-block {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: var(--bg-3);
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-3);
}
.code-dots { display: flex; gap: 6px; }
.code-dots span { width: 10px; height: 10px; border-radius: 50%; }
.code-dots span:nth-child(1) { background: #ff5f57; }
.code-dots span:nth-child(2) { background: #febc2e; }
.code-dots span:nth-child(3) { background: #28c840; }
.code-block pre {
  margin: 0;
  border-radius: 0;
  border: none;
  background: var(--bg-2);
  padding: 18px;
}
.code-comment { color: var(--text-3); font-style: italic; }
.code-keyword { color: var(--brand-3); }
.code-string { color: var(--brand-4); }
.code-function { color: var(--brand-2); }

/* 步骤列表 */
.steps { counter-reset: step; }
.step {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}
.step:last-child { border-bottom: none; }
.step-num {
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--brand-1);
  display: grid; place-items: center;
  font-weight: 800;
  color: var(--brand-2);
  position: relative;
  counter-increment: step;
}
.step-num::before { content: counter(step); }
.step-content { flex: 1; }
.step-content h4 { font-size: 1.15rem; margin-bottom: 8px; color: var(--text-0); }
.step-content p { color: var(--text-2); margin-bottom: 12px; font-size: 0.96rem; }

/* 知识卡片 */
.knowledge-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--tx-base);
}
.knowledge-card:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.knowledge-card .badge { margin-bottom: 14px; }
.knowledge-card h3 { margin-bottom: 14px; }
.knowledge-card p { color: var(--text-2); font-size: 0.94rem; line-height: 1.7; }
.knowledge-keypoints {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed var(--border);
}
.knowledge-keypoints li {
  list-style: none;
  padding-left: 22px;
  position: relative;
  font-size: 0.88rem;
  color: var(--text-2);
  margin-bottom: 8px;
}
.knowledge-keypoints li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--brand-2);
  font-weight: 700;
}

/* 大型架构图容器 */
.architecture-showcase {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  padding: 50px 40px;
  position: relative;
  overflow: hidden;
}
.architecture-showcase::before {
  content: '';
  position: absolute;
  top: -100px; left: 50%; transform: translateX(-50%);
  width: 600px; height: 200px;
  background: radial-gradient(ellipse, rgba(124, 92, 255, 0.3), transparent 70%);
  filter: blur(40px);
}
.architecture-showcase h3 {
  font-size: 1.6rem;
  margin-bottom: 16px;
  text-align: center;
}
.architecture-showcase .description {
  text-align: center;
  color: var(--text-2);
  max-width: 660px;
  margin: 0 auto 40px;
  font-size: 1rem;
}

/* 概念卡 (架构组件) */
.component-stack {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 30px 0;
}
.component {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
  text-align: center;
}
.component-name { font-weight: 700; color: var(--brand-2); font-size: 0.95rem; margin-bottom: 6px; }
.component-desc { font-size: 0.82rem; color: var(--text-3); }

/* 标签云 */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.tag-cloud .tag {
  font-size: 0.92rem;
  padding: 8px 16px;
}

/* CTA Banner */
.cta-banner {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xl);
  padding: 70px 50px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top, rgba(124, 92, 255, 0.2), transparent 60%);
  pointer-events: none;
}
.cta-banner > * { position: relative; }
.cta-banner h2 { margin-bottom: 20px; font-size: 2.4rem; }
.cta-banner p {
  max-width: 600px;
  margin: 0 auto 36px;
  color: var(--text-2);
  font-size: 1.08rem;
}

/* 比较表 */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.compare-table th {
  text-align: left;
  padding: 16px 20px;
  background: var(--bg-3);
  font-weight: 600;
  color: var(--text-0);
  font-size: 0.92rem;
  border-bottom: 1px solid var(--border);
}
.compare-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
  color: var(--text-2);
  vertical-align: top;
}
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tr:hover td { background: var(--surface-strong); }
.compare-table .center { text-align: center; }

/* 警告/成功/提示区块 */
.notice {
  padding: 18px 22px;
  border-radius: var(--radius-md);
  margin: 20px 0;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  border-left: 4px solid;
}
.notice-info { background: rgba(0, 212, 255, 0.08); border-color: var(--brand-2); }
.notice-warning { background: rgba(255, 184, 77, 0.08); border-color: var(--brand-5); }
.notice-success { background: rgba(0, 255, 163, 0.08); border-color: var(--brand-4); }
.notice-tip { background: rgba(124, 92, 255, 0.08); border-color: var(--brand-1); }
.notice-icon {
  width: 24px; height: 24px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-weight: 800;
  flex-shrink: 0;
  font-size: 0.9rem;
}
.notice-info .notice-icon { background: var(--brand-2); color: black; }
.notice-warning .notice-icon { background: var(--brand-5); color: black; }
.notice-success .notice-icon { background: var(--brand-4); color: black; }
.notice-tip .notice-icon { background: var(--brand-1); color: white; }
.notice strong { color: var(--text-0); display: block; margin-bottom: 4px; }
.notice p { font-size: 0.92rem; color: var(--text-2); }

/* 引用 */
blockquote {
  background: var(--surface);
  border-left: 4px solid var(--brand-1);
  padding: 20px 24px;
  margin: 20px 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--text-2);
}
blockquote cite {
  display: block;
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--text-3);
  font-style: normal;
}

/* 路径可视化 */
.path-diagram {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  text-align: center;
  overflow-x: auto;
}
.path-diagram pre { margin: 0; background: transparent; border: none; padding: 0; text-align: left; }

/* Mermaid 容器 */
.mermaid {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  text-align: center;
  margin: 24px 0;
  overflow-x: auto;
}

/* 文章正文 */
.article {
  max-width: 820px;
  margin: 0 auto;
}
.article h2 {
  margin: 60px 0 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}
.article h3 {
  margin: 40px 0 16px;
}
.article p {
  margin-bottom: 18px;
  color: var(--text-2);
  font-size: 1.02rem;
  line-height: 1.8;
}
.article ul, .article ol {
  margin: 18px 0;
  padding-left: 24px;
  color: var(--text-2);
}
.article li { margin-bottom: 10px; line-height: 1.7; }
.article strong { color: var(--text-0); }

/* 子页面 Hero 变体 */
.page-hero {
  padding: 100px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  top: -100px; left: 50%; transform: translateX(-50%);
  width: 800px; height: 400px;
  background: radial-gradient(ellipse, rgba(124, 92, 255, 0.2), transparent 70%);
  filter: blur(60px);
  z-index: -1;
}

/* 列表分页 */
.pagination {
  display: flex; justify-content: center; gap: 8px;
  margin-top: 40px;
}
.page-btn {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: grid; place-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  cursor: pointer;
  color: var(--text-2);
  transition: all var(--tx-fast);
}
.page-btn:hover { background: var(--surface-strong); color: var(--text-0); }
.page-btn.active { background: var(--brand-1); color: white; border-color: var(--brand-1); }

/* 资源卡片 */
.resource-card {
  display: flex; gap: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: all var(--tx-base);
}
.resource-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.resource-thumb {
  flex-shrink: 0;
  width: 64px; height: 80px;
  border-radius: 10px;
  background: var(--bg-3);
  display: grid; place-items: center;
  font-size: 1.6rem;
  border: 1px solid var(--border);
}
.resource-body h4 { font-size: 1.08rem; margin-bottom: 6px; }
.resource-body p { color: var(--text-3); font-size: 0.88rem; margin-bottom: 8px; }
.resource-body .meta { font-size: 0.78rem; color: var(--text-4); }

/* 学习清单 */
.checklist {
  list-style: none;
  padding: 0;
}
.checklist li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.checklist li:last-child { border-bottom: none; }
.checklist-icon {
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 6px;
  background: var(--surface);
  border: 2px solid var(--border-strong);
  display: grid; place-items: center;
  font-size: 0.7rem;
  font-weight: 800;
  margin-top: 2px;
}
.checklist li.done .checklist-icon { background: var(--brand-4); color: black; border-color: var(--brand-4); }
.checklist li.done .item-title { text-decoration: line-through; color: var(--text-3); }
.item-title { font-weight: 600; color: var(--text-0); margin-bottom: 4px; }
.item-desc { font-size: 0.88rem; color: var(--text-3); }

/* 知识图谱画布 */
.knowledge-graph {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 50px 30px;
  overflow-x: auto;
}

/* 拼图式组件 */
.puzzle-pieces {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  counter-reset: piece;
}
.puzzle-piece {
  counter-increment: piece;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: relative;
}
.puzzle-piece::before {
  content: counter(piece, decimal-leading-zero);
  position: absolute;
  top: 18px; right: 22px;
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--brand-1);
  opacity: 0.4;
}
.puzzle-piece h4 { margin-bottom: 10px; }
.puzzle-piece p { font-size: 0.9rem; color: var(--text-2); }

/* 响应式 */
@media (max-width: 900px) {
  .feature-grid { grid-template-columns: 1fr; }
  .component-stack { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .puzzle-pieces { grid-template-columns: 1fr; }
  .cta-banner { padding: 50px 30px; }
  .cta-banner h2 { font-size: 1.8rem; }
}
@media (max-width: 768px) {
  .hero { padding: 80px 0 50px; }
  .timeline::before { left: 28px; }
  .timeline-item { grid-template-columns: auto 1fr; gap: 16px; }
  .timeline-item .timeline-marker { grid-column: 1; }
  .timeline-content, .timeline-content.right-side, .timeline-content.left-side {
    grid-column: 2;
    text-align: left;
  }
  .timeline-content.left-side .timeline-meta { justify-content: flex-start; }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .tabs { justify-content: flex-start; overflow-x: auto; padding-bottom: 8px; }
  .resource-card { flex-direction: column; }
  .resource-thumb { width: 100%; height: 120px; }
}


/* ===== 语言切换按钮 ===== */
.lang-switcher {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 14px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: all var(--tx-fast);
  white-space: nowrap;
  margin-left: 10px;
  position: relative;
}
.lang-switcher:hover {
  border-color: var(--brand-1);
  color: var(--text-0);
  background: rgba(124, 92, 255, 0.08);
  transform: translateY(-1px);
}
.lang-switcher::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand-2), var(--brand-4));
  flex-shrink: 0;
}

/* 移动端：lang-switcher 与 nav-links 一起显示 */
@media (max-width: 768px) {
  .lang-switcher {
    margin-left: 0;
    margin-top: 8px;
    align-self: flex-start;
  }
}

/* ===== 左侧目录导航 TOC ===== */

.page-with-toc {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  align-items: start;
}

.page-content { min-width: 0; }

/* TOC 容器 */
.toc-container {
  position: sticky;
  top: 100px;
  align-self: flex-start;
  max-height: calc(100vh - 130px);
  overflow: hidden;
  padding: 0;
  font-size: 0.88rem;
}

/* TOC 内容包装 */
.toc-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 14px 18px;
  overflow: hidden;
  max-height: 100%;
  display: flex;
  flex-direction: column;
}

/* TOC 头部 */
.toc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}

.toc-header-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.toc-progress {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.74rem;
  color: var(--brand-2);
  background: rgba(0, 212, 255, 0.1);
  padding: 2px 8px;
  border-radius: 100px;
  border: 1px solid rgba(0, 212, 255, 0.2);
  font-weight: 600;
}

/* 进度条 */
.toc-progress-bar {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand-1), var(--brand-2));
  transition: width 0.1s linear;
  border-radius: 1px;
}

.toc-wrap { position: relative; }

/* 滚动容器 */
.toc-nav {
  overflow-y: auto;
  margin: 0 -8px;
  padding: 0 8px 0 0;
  scrollbar-width: thin;
  scrollbar-color: var(--bg-3) transparent;
}

.toc-nav::-webkit-scrollbar { width: 4px; }
.toc-nav::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 2px; }

/* 列表 */
.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  border-left: 1px solid var(--border);
}

.toc-item {
  margin: 0;
  padding: 0;
  position: relative;
}

.toc-item a {
  display: block;
  padding: 7px 10px 7px 14px;
  color: var(--text-3);
  font-size: 0.83rem;
  line-height: 1.4;
  text-decoration: none;
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: all 0.15s;
  border-radius: 0 6px 6px 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.toc-item a:hover {
  color: var(--text-0);
  background: var(--surface-strong);
}

.toc-item a.active {
  color: var(--brand-2);
  border-left-color: var(--brand-1);
  background: rgba(124, 92, 255, 0.08);
  font-weight: 600;
}

/* H3 缩进 */
.toc-h3 a {
  padding-left: 24px;
  font-size: 0.78rem;
  color: var(--text-4);
}
.toc-h3 a.active {
  color: var(--brand-4);
  border-left-color: var(--brand-2);
  background: rgba(0, 212, 255, 0.05);
}

/* H4 进一步缩进 */
.toc-h4 a {
  padding-left: 34px;
  font-size: 0.74rem;
  color: var(--text-4);
}

/* 响应式:移动端隐藏 */
@media (max-width: 1024px) {
  .page-with-toc {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .toc-container {
    display: none;
  }
}

/* 桌面布局保持自然 (让 .container 自己管 padding) */