/* ============================================================
   香蕉漫画 · 全站样式
   站点根：/assets/css/style.css
   分组：base / layout / components / pages / responsive
   ============================================================ */

/* ============================================================
   Base — 全局基础
   ============================================================ */
:root {
  --primary: #0F766E;
  --primary-dark: #0B5D57;
  --primary-light: #E6F2F1;
  --accent: #F59E0B;
  --accent-light: #FEF3E2;
  --bg: #F9FAFB;
  --card: #FFFFFF;
  --text: #1F2937;
  --text-light: #6B7280;
  --text-muted: #9CA3AF;
  --danger: #DC2626;
  --border: #E5E7EB;
  --radius: 8px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 3px 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, 0.1);
  --font-stack: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --mono-stack: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  --container: 1280px;
  --gutter: 32px;
  --sidebar-w: 220px;
  --transition: 0.2s ease;
  --header-h: 64px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
}

h1 {
  font-size: clamp(28px, 3vw, 40px);
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 1em;
}

/* ============================================================
   Layout — 全站骨架
   ============================================================ */

/* 站点容器 */
.site-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.site-home {
  background: var(--bg);
}

/* 页头 */
.site-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-name {
  font-size: 22px;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.02em;
}

/* 汉堡按钮 — 桌面隐藏 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.nav-toggle:hover {
  background: var(--bg);
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 主导航 */
.site-nav {
  flex-shrink: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-list li a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-list li a:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.nav-list li a.is-current {
  color: var(--card);
  background: var(--primary);
}

/* 主内容区 */
.site-main {
  flex: 1 0 auto;
  width: 100%;
}

.home-main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* 内页布局容器 */
.layout-shell,
.page-layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  gap: 32px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  align-items: start;
}

/* 侧栏 */
.side-nav,
.site-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 12px;
  box-shadow: var(--shadow-sm);
}

.side-nav ul li a,
.sidebar-nav ul li a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}

.side-nav ul li a:hover,
.sidebar-nav ul li a:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.side-nav ul li a.is-current,
.sidebar-nav ul li a.is-current {
  background: var(--primary);
  color: var(--card);
}

/* 内页主区 */
.inner-main {
  min-width: 0;
  min-height: 60vh;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-light);
  padding: 16px 0 8px;
}

.breadcrumb a {
  color: var(--primary);
  transition: color var(--transition);
}

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

.breadcrumb-sep {
  color: var(--text-muted);
}

.breadcrumb-current {
  color: var(--text);
  font-weight: 500;
}

/* 页面标题区 */
.page-header {
  padding: 24px 0 32px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
}

.page-title {
  margin-bottom: 8px;
}

.page-description {
  font-size: 16px;
  color: var(--text-light);
  max-width: 720px;
  margin-bottom: 0;
}

/* 页脚 */
.site-footer {
  background: var(--card);
  border-top: 1px solid var(--border);
  margin-top: 64px;
}

.footer-columns {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1.2fr;
  gap: 40px;
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px var(--gutter) 32px;
}

.footer-col h3 {
  font-size: 16px;
  margin-bottom: 16px;
  color: var(--text);
}

.footer-col p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-light);
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 16px var(--gutter);
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* ============================================================
   Components — 通用组件
   ============================================================ */

/* 区块标题 */
.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.section-heading h2 {
  margin-bottom: 0;
}

.section-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  transition: color var(--transition);
}

.section-link:hover {
  color: var(--primary-dark);
}

.section-title {
  margin-bottom: 24px;
}

/* 通用区块 */
.section-block {
  margin-bottom: 56px;
}

/* 文本链接 */
.text-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  margin-top: 12px;
  transition: color var(--transition);
}

.text-link:hover {
  color: var(--primary-dark);
}

/* 封面卡 */
.category-card {
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.category-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.category-card h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.category-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 0;
}

.category-card-body {
  padding: 16px;
}

/* 卡片 hover 通用 */
.rank-row:hover,
.highlight-card:hover,
.step-card:hover,
.note-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.rank-row,
.highlight-card,
.step-card,
.note-card {
  transition: transform var(--transition), box-shadow var(--transition);
}

/* 相关链接 */
.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 0;
  margin-top: 32px;
  border-top: 1px solid var(--border);
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-right: 4px;
}

.related-links-item {
  display: inline-block;
  font-size: 14px;
  color: var(--primary);
  padding: 6px 14px;
  background: var(--primary-light);
  border-radius: 20px;
  transition: background var(--transition), color var(--transition);
}

.related-links-item:hover {
  background: var(--primary);
  color: var(--card);
}

/* 步骤序号 */
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--card);
  font-size: 15px;
  font-weight: 600;
  flex-shrink: 0;
}

/* ============================================================
   Pages — 首页
   ============================================================ */

/* 首屏场景选择 */
.hero-scene {
  padding: 48px 0 40px;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-copy h1 {
  margin-bottom: 16px;
  color: var(--text);
}

.hero-lead {
  font-size: 17px;
  color: var(--text-light);
  margin-bottom: 24px;
  max-width: 480px;
}

.hero-cta {
  display: inline-block;
  padding: 12px 28px;
  background: var(--primary);
  color: var(--card);
  font-size: 16px;
  font-weight: 500;
  border-radius: var(--radius);
  transition: background var(--transition);
}

.hero-cta:hover {
  background: var(--primary-dark);
}

.hero-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
}

/* 场景入口 */
.scene-entries {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 8px;
}

.scene-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.scene-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.scene-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--accent-light);
  color: var(--accent);
  font-size: 20px;
  flex-shrink: 0;
}

.scene-text {
  flex: 1;
  min-width: 0;
}

.scene-text strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.scene-text span {
  display: block;
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.5;
}

.scene-arrow {
  font-size: 16px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform var(--transition), color var(--transition);
}

.scene-card:hover .scene-arrow {
  transform: translateX(4px);
  color: var(--primary);
}

/* 最近更新摘要 */
.update-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: start;
}

.update-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.update-item {
  display: flex;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.update-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.update-item img {
  width: 120px;
  height: 84px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

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

.update-content h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.update-meta {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.update-content p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 0;
}

.update-summary {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.update-summary h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

.update-summary p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 0;
}

/* 分类速览 */
.category-overview .category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* 排行榜预览 */
.hot-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: start;
}

.hot-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hot-list li {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.hot-list li:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.hot-rank {
  font-family: var(--mono-stack);
  font-size: 22px;
  font-weight: 600;
  color: var(--text-muted);
  width: 36px;
  text-align: center;
  flex-shrink: 0;
}

.hot-list li:first-child .hot-rank {
  color: var(--danger);
}

.hot-list li:nth-child(2) .hot-rank {
  color: var(--accent);
}

.hot-list li:nth-child(3) .hot-rank {
  color: var(--primary);
}

.hot-list img {
  width: 64px;
  height: 48px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.hot-info {
  min-width: 0;
  flex: 1;
}

.hot-info h3 {
  font-size: 15px;
  margin-bottom: 2px;
}

.hot-info p {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hot-note {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.hot-note h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

.hot-note p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 0;
}

/* 阅读路径 */
.reading-path {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.path-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.path-step {
  text-align: left;
  padding: 20px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.path-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.path-step .step-num {
  background: var(--accent);
  margin-bottom: 12px;
}

.path-step h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.path-step p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 0;
}

.path-cta {
  text-align: center;
}

.cta-button {
  display: inline-block;
  padding: 12px 32px;
  background: var(--accent);
  color: var(--card);
  font-size: 16px;
  font-weight: 500;
  border-radius: var(--radius);
  transition: background var(--transition);
}

.cta-button:hover {
  background: #D97706;
}

/* ============================================================
   Pages — 题材分类
   ============================================================ */

.category-grid-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.category-grid-inner .category-card img {
  height: 220px;
}

/* 详情预览 */
.detail-preview-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 32px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.detail-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: var(--radius);
}

.detail-content h3 {
  font-size: 20px;
  margin-bottom: 12px;
}

.detail-content p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
}

.detail-content ul {
  margin: 12px 0;
  padding-left: 20px;
}

.detail-content ul li {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  list-style: disc;
  margin-bottom: 4px;
}

/* 分类建议 */
.classification-note {
  margin-top: 40px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.note-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.note-list li {
  padding: 16px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.note-list h3 {
  font-size: 15px;
  margin-bottom: 6px;
  color: var(--primary);
}

.note-list p {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 0;
}

/* ============================================================
   Pages — 最近更新
   ============================================================ */

.update-timeline {
  margin-bottom: 40px;
}

.timeline-list {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.timeline-list::before {
  content: '';
  position: absolute;
  left: 60px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  display: flex;
  gap: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.timeline-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.timeline-media {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline-media::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid var(--card);
  box-shadow: 0 0 0 2px var(--primary);
  z-index: 2;
}

.timeline-media img {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.timeline-content {
  min-width: 0;
  flex: 1;
}

.timeline-content h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.timeline-content time {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.timeline-content p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 0;
}

/* 本周重点 */
.highlight-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.highlight-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.highlight-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--primary);
}

.highlight-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.highlight-card a {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  transition: color var(--transition);
}

.highlight-card a:hover {
  color: var(--primary-dark);
}

/* 右侧详情摘要 */
.update-details {
  margin-top: 40px;
}

.aside-title {
  margin-bottom: 16px;
}

.details-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.details-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.details-card h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.details-card p {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 12px;
}

.details-card a {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  transition: color var(--transition);
}

.details-card a:hover {
  color: var(--primary-dark);
}

/* ============================================================
   Pages — 排行榜
   ============================================================ */

.rank-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  border-bottom: 2px solid var(--border);
  padding-bottom: 0;
}

.rank-tab {
  padding: 10px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-light);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition), border-color var(--transition);
}

.rank-tab:hover {
  color: var(--primary);
}

.rank-tab.is-active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.rank-list {
  margin-bottom: 40px;
}

.rank-list.is-hidden {
  display: none;
}

.module-title {
  margin-bottom: 4px;
}

.module-desc {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 20px;
}

.rank-row {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
}

.rank-number {
  font-family: var(--mono-stack);
  font-size: 24px;
  font-weight: 600;
  width: 44px;
  text-align: center;
  flex-shrink: 0;
}

.rank-1 {
  color: var(--danger);
}

.rank-2 {
  color: var(--accent);
}

.rank-3 {
  color: var(--primary);
}

.rank-4,
.rank-5 {
  color: var(--text-muted);
}

.rank-cover {
  width: 72px;
  height: 54px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.rank-info {
  flex: 1;
  min-width: 0;
}

.rank-name {
  font-size: 16px;
  margin-bottom: 2px;
}

.rank-reason {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.5;
  margin-bottom: 0;
}

.rank-bar {
  width: 120px;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  flex-shrink: 0;
}

.bar-fill {
  display: block;
  height: 100%;
  border-radius: 3px;
}

.bar-fill-high {
  width: 90%;
  background: var(--primary);
}

.bar-fill-mid {
  width: 65%;
  background: var(--accent);
}

.bar-fill-low {
  width: 40%;
  background: var(--text-muted);
}

/* 榜单说明 */
.rank-note {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.note-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.note-title {
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--primary);
}

.note-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 0;
}

/* 榜单提示 */
.rank-tip {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.rank-tip .module-title {
  margin-bottom: 8px;
}

.rank-tip p {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 12px;
}

.rank-tip p a {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  margin-right: 16px;
  transition: color var(--transition);
}

.rank-tip p a:hover {
  color: var(--primary-dark);
}

/* ============================================================
   Pages — 阅读指南
   ============================================================ */

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.step-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.step-card .step-num {
  margin: 0 auto 12px;
}

.step-name {
  font-size: 16px;
  margin-bottom: 8px;
}

.step-desc {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 0;
}

/* 步骤详情 */
.step-block {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 24px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.step-media figure img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius);
}

.step-media figcaption {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 8px;
}

.step-content h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.step-content p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

.step-points {
  margin-top: 12px;
  padding-left: 0;
}

.step-points li {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  padding-left: 20px;
  position: relative;
  margin-bottom: 4px;
}

.step-points li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}

/* 方法网格 */
.method-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.method-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.method-card h3 {
  font-size: 17px;
  margin-bottom: 10px;
  color: var(--primary);
}

.method-card p {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 12px;
}

.method-list {
  padding-left: 0;
}

.method-list li {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  padding-left: 20px;
  position: relative;
  margin-bottom: 6px;
}

.method-list li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* 相关阅读 */
.related {
  margin-top: 40px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.related-title {
  font-size: 18px;
  margin-bottom: 16px;
}

.related-list li {
  margin-bottom: 8px;
}

.related-list li a {
  font-size: 14px;
  color: var(--primary);
  transition: color var(--transition);
}

.related-list li a:hover {
  color: var(--primary-dark);
}

/* ============================================================
   Pages — 常见问题
   ============================================================ */

.faq-list {
  margin-bottom: 40px;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: background var(--transition);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 22px;
  font-weight: 400;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: transform 0.2s ease, color 0.2s ease;
}

.faq-item summary:hover {
  background: var(--bg);
}

.faq-item[open] summary {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-answer {
  padding: 16px 20px;
}

.faq-answer p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 0;
}

.faq-answer a {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  margin-top: 8px;
}

.faq-answer a:hover {
  color: var(--primary-dark);
}

/* 反馈说明 */
.faq-note {
  margin-top: 40px;
}

.faq-note-figure img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.faq-note .note-card {
  margin-bottom: 16px;
}

/* ============================================================
   Pages — 关于本站
   ============================================================ */

.content-media-inline {
  margin: 16px 0 20px;
}

.content-media-inline img {
  width: 100%;
  max-height: 320px;
  object-fit: cover;
  border-radius: var(--radius);
}

.content-media-inline figcaption {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 8px;
}

/* 站点定位 */
.about-intro {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 32px;
  align-items: start;
  margin-bottom: 40px;
}

.intro-text h2 {
  margin-bottom: 16px;
}

.intro-text p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

.intro-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.intro-card-head {
  margin-bottom: 16px;
}

.intro-card-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: 20px;
}

.intro-card-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.intro-card-item {
  display: flex;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.intro-card-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.intro-card-item dt {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  flex-shrink: 0;
  min-width: 72px;
}

.intro-card-item dd {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  margin: 0;
}

/* 内容组织 */
.about-org {
  margin-bottom: 40px;
}

.org-lead {
  font-size: 15px;
  color: var(--text-light);
  margin-bottom: 20px;
}

.org-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.org-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.org-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.org-card h3 {
  font-size: 17px;
  margin-bottom: 10px;
  color: var(--primary);
}

.org-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.org-card a {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  transition: color var(--transition);
}

.org-card a:hover {
  color: var(--primary-dark);
}

/* 内容边界 */
.about-boundary {
  margin-bottom: 40px;
}

.boundary-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.boundary-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.boundary-item h3 {
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--text);
}

.boundary-item p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 0;
}

/* 结构示意图 */
.org-chart {
  margin-top: 40px;
}

.org-chart-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.org-chart-card h2 {
  font-size: 18px;
  margin-bottom: 8px;
}

.chart-lead {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 16px;
}

.chart-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chart-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.chart-list li a {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  flex-shrink: 0;
}

.chart-list li a:hover {
  color: var(--primary-dark);
}

.chart-list li span {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.5;
}

/* ============================================================
   Pages — 404
   ============================================================ */

.error-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px var(--gutter);
}

.error-content {
  text-align: center;
  max-width: 480px;
}

.error-code {
  font-family: var(--mono-stack);
  font-size: 72px;
  font-weight: 600;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 16px;
}

.error-content h1 {
  font-size: 24px;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: var(--text-light);
  margin-bottom: 24px;
}

.btn-back-home {
  display: inline-block;
  padding: 12px 32px;
  background: var(--primary);
  color: var(--card);
  font-size: 16px;
  font-weight: 500;
  border-radius: var(--radius);
  transition: background var(--transition);
}

.btn-back-home:hover {
  background: var(--primary-dark);
}

/* ============================================================
   Responsive — 响应式
   ============================================================ */

/* 平板 */
@media (max-width: 1024px) {
  :root {
    --gutter: 24px;
  }

  .layout-shell,
  .page-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .side-nav,
  .site-sidebar {
    position: static;
    order: 2;
  }

  .inner-main {
    order: 1;
  }

  .hero-scene {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-media img {
    height: 280px;
  }

  .scene-entries {
    grid-template-columns: repeat(2, 1fr);
  }

  .category-overview .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .update-layout,
  .hot-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .path-steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .category-grid-inner {
    grid-template-columns: repeat(2, 1fr);
  }

  .highlight-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .rank-note {
    grid-template-columns: 1fr;
  }

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .step-block {
    grid-template-columns: 1fr;
  }

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

  .about-intro {
    grid-template-columns: 1fr;
  }

  .org-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .boundary-list {
    grid-template-columns: 1fr;
  }

  .footer-columns {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

/* 手机 */
@media (max-width: 768px) {
  :root {
    --gutter: 16px;
    --header-h: 56px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 16px;
  }

  .nav-list.is-open {
    display: flex;
  }

  .nav-list li a {
    display: block;
    padding: 14px 16px;
    font-size: 16px;
    border-radius: var(--radius-sm);
  }

  .hero-scene {
    padding: 32px 0 24px;
    gap: 24px;
  }

  .hero-media img {
    height: 220px;
  }

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

  .scene-card {
    padding: 14px;
  }

  .category-overview .category-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .category-card img {
    height: 180px;
  }

  .update-item {
    flex-direction: column;
  }

  .update-item img {
    width: 100%;
    height: 160px;
  }

  .hot-list li {
    flex-wrap: wrap;
  }

  .hot-info {
    flex: 1 1 calc(100% - 120px);
  }

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

  .category-grid-inner {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .detail-preview-inner {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 16px;
  }

  .detail-figure img {
    height: 200px;
  }

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

  .rank-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .rank-tab {
    white-space: nowrap;
    padding: 10px 16px;
  }

  .rank-row {
    flex-wrap: wrap;
    gap: 12px;
  }

  .rank-cover {
    width: 64px;
    height: 48px;
  }

  .rank-info {
    flex: 1 1 calc(100% - 120px);
  }

  .rank-bar {
    width: 100%;
    margin-left: 60px;
  }

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

  .step-block {
    padding: 16px;
    gap: 16px;
  }

  .step-media figure img {
    height: 160px;
  }

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

  .boundary-list {
    gap: 12px;
  }

  .footer-columns {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 16px 24px;
  }

  .site-footer {
    margin-top: 40px;
  }

  .timeline-list::before {
    left: 24px;
  }

  .timeline-item {
    gap: 12px;
    padding: 12px;
  }

  .timeline-media {
    width: 48px;
    height: 48px;
  }

  .timeline-media::before {
    width: 10px;
    height: 10px;
  }

  .timeline-media img {
    width: 40px;
    height: 40px;
  }

  .error-code {
    font-size: 48px;
  }

  .about-intro,
  .detail-preview-inner,
  .step-block {
    grid-template-columns: 1fr;
  }
}

/* 小屏手机 */
@media (max-width: 480px) {
  .hero-media img {
    height: 180px;
  }

  .hot-list img {
    width: 56px;
    height: 42px;
  }

  .rank-cover {
    width: 56px;
    height: 42px;
  }

  .rank-number {
    font-size: 20px;
    width: 32px;
  }

  .rank-bar {
    margin-left: 44px;
  }

  .timeline-content h3 {
    font-size: 15px;
  }

  .timeline-content p {
    font-size: 13px;
  }

  .page-header {
    padding: 16px 0 24px;
    margin-bottom: 24px;
  }
}

/* ============================================================
   动效 — 尊重系统减弱动效
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}