/* ==========================================================================
   草莓短剧 · 全站样式表
   文化场馆风 · 米白底 / 深墨绿主色 / 朱砂红点缀
   ========================================================================== */

/* --------------------------------------------------------------------------
   Base · 基础变量与重置
   -------------------------------------------------------------------------- */
:root {
  --color-bg: #faf8f5;
  --color-surface: #ffffff;
  --color-ink: #2e3a33;
  --color-accent: #c4552f;
  --color-gray: #7c7f7a;
  --color-line: #e8e3db;
  --color-line-strong: #d8d2c8;
  --color-bg-soft: #f1eee8;

  --font-title: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
  --font-body: "Georgia", "Times New Roman", "Songti SC", "SimSun", serif;

  --container-width: 1200px;
  --text-max: 680px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  --header-h: 72px;
  --space-section: 72px;
}

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

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

body {
  background-color: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-ink);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

ul,
ol {
  list-style: none;
}

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

table {
  border-collapse: collapse;
  width: 100%;
}

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

/* 屏幕阅读器专用文本 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   Layout · 全局骨架
   -------------------------------------------------------------------------- */

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

.site-home .site-body,
.site-inner .site-body,
.site-error .site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

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

.brand-logo {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  flex-shrink: 0;
}

.brand-logo::before {
  content: "";
  display: block;
  width: 6px;
  height: 28px;
  background: var(--color-accent);
  border-radius: 2px;
  align-self: center;
}

.brand-name {
  font-family: var(--font-title);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-ink);
  letter-spacing: 0.02em;
}

/* 主导航 */
.site-nav {
  display: block;
}

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

.nav-item {
  position: relative;
}

.nav-item a {
  display: block;
  padding: 8px 16px;
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-ink);
  border-bottom: 2px solid transparent;
  line-height: 1.4;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.nav-item a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.nav-item.is-current a {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
  font-weight: 600;
}

/* 移动端菜单按钮（默认隐藏） */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.nav-toggle-icon {
  position: relative;
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-ink);
  transition: background 0.2s ease;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: var(--color-ink);
  transition: transform 0.2s ease, top 0.2s ease;
}

.nav-toggle-icon::before {
  top: -6px;
}

.nav-toggle-icon::after {
  top: 6px;
}

/* 页脚 */
.site-footer {
  margin-top: auto;
  background: var(--color-bg);
  border-top: 1px solid var(--color-line);
}

.footer-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
}

.footer-brand-name {
  font-family: var(--font-title);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.footer-tagline {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

.footer-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--color-gray);
  line-height: 1.6;
}

.footer-bottom {
  border-top: 1px solid var(--color-line);
  padding: 20px 24px;
  text-align: center;
}

.footer-bottom p {
  max-width: var(--container-width);
  margin: 0 auto;
  font-size: 13px;
  color: var(--color-gray);
}

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

.home-main {
  overflow: visible;
}

/* 内页通用容器 */
.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 72px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 24px 0 16px;
  font-size: 14px;
  color: var(--color-gray);
}

.breadcrumb a {
  color: var(--color-gray);
  transition: color 0.2s ease;
}

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

.breadcrumb-sep {
  color: var(--color-line-strong);
}

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

/* 页面标题区（内页统一） */
.page-header {
  padding: 24px 0 32px;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 40px;
}

.page-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.3;
  margin-bottom: 12px;
}

.page-description {
  max-width: var(--text-max);
  font-size: 16px;
  color: var(--color-gray);
  line-height: 1.8;
}

/* 区块标题 */
.section-heading {
  margin-bottom: 32px;
}

.section-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.4;
  margin-bottom: 12px;
  position: relative;
  padding-left: 16px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.15em;
  width: 4px;
  height: 1.1em;
  background: var(--color-accent);
  border-radius: 2px;
}

.section-intro,
.section-note,
.section-description {
  max-width: var(--text-max);
  font-size: 15px;
  color: var(--color-gray);
  line-height: 1.8;
}

.section-kicker {
  display: inline-block;
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
  text-transform: uppercase;
}

/* 图片容器统一 */
figure {
  margin: 0;
}

figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 相关链接条（首页与频道页底部） */
.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links-label {
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  margin-right: 8px;
}

.related-links-item {
  font-size: 14px;
  color: var(--color-accent);
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  transition: background 0.2s ease, color 0.2s ease;
}

.related-links-item:hover {
  background: var(--color-surface);
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Components · 通用组件
   -------------------------------------------------------------------------- */

/* 图文说明浮层标签（图注） */
.figure-caption {
  font-size: 13px;
  color: var(--color-gray);
  line-height: 1.6;
  margin-top: 12px;
  padding-top: 8px;
  border-top: 1px solid var(--color-line);
}

/* 文本链接 */
.text-link {
  display: inline-block;
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.text-link:hover {
  border-bottom-color: var(--color-accent);
}

/* 交叉导航（频道页 / 题材页） */
.cross-links {
  margin-top: 16px;
}

.cross-links-shell {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.cross-link-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.cross-link-card:hover {
  border-color: var(--color-accent);
}

.cross-link-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: var(--color-bg-soft);
  color: var(--color-accent);
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 700;
}

.cross-link-content strong {
  display: block;
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.cross-link-content span {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
}

/* 折叠面板 */
.faq-item {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  cursor: pointer;
  list-style: none;
  transition: color 0.2s ease;
}

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

.faq-question::after {
  content: "+";
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-line-strong);
  border-radius: 50%;
  font-size: 16px;
  color: var(--color-accent);
  transition: transform 0.2s ease;
}

.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
}

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

.faq-answer {
  padding: 0 20px 18px;
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.8;
  border-top: 1px solid var(--color-line);
  padding-top: 14px;
}

/* 表格容器 */
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

/* ==========================================================================
   Components · 首页专用
   ========================================================================== */

/* 首屏主视觉 */
.hero-section {
  background: var(--color-bg);
  padding: 56px 0 0;
}

.hero-layout {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero-copy {
  padding: 24px 0;
}

.hero-title {
  font-size: 40px;
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1.3;
  margin-bottom: 20px;
}

.hero-lead {
  font-size: 17px;
  color: var(--color-gray);
  line-height: 1.9;
  margin-bottom: 28px;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background 0.2s ease, color 0.2s ease;
}

.hero-link:first-child {
  background: var(--color-ink);
  color: var(--color-bg);
}

.hero-link:first-child:hover {
  background: var(--color-accent);
  color: var(--color-surface);
}

.hero-link:last-child {
  border: 1px solid var(--color-line-strong);
  color: var(--color-ink);
}

.hero-link:last-child:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.hero-figure {
  position: relative;
}

.hero-figure img {
  border-radius: var(--radius-lg);
  aspect-ratio: 4 / 3;
}

.hero-figure .figure-caption {
  font-size: 13px;
  color: var(--color-gray);
  padding: 10px 4px 0;
  border-top: none;
  margin-top: 8px;
}

/* 频道时间线小字条 */
.hero-timeline {
  max-width: var(--container-width);
  margin: 48px auto 0;
  padding: 16px 24px;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 32px;
}

.timeline-item {
  font-family: var(--font-title);
  font-size: 13px;
  color: var(--color-gray);
  letter-spacing: 0.04em;
  position: relative;
  padding-left: 14px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  transform: translateY(-50%);
}

/* 月度方向与近期动态 */
.monthly-direction-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 72px 24px 0;
}

.direction-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.direction-card {
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  border-top: 3px solid var(--color-accent);
  transition: border-color 0.2s ease;
}

.direction-card:hover {
  border-color: var(--color-ink);
}

.direction-date {
  display: inline-block;
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 12px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--color-accent);
}

.direction-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
  line-height: 1.5;
}

.direction-desc {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

.section-figure {
  margin-top: 24px;
}

.section-figure img {
  border-radius: var(--radius-lg);
  aspect-ratio: 21 / 8;
}

.section-figure .figure-caption {
  font-size: 13px;
  color: var(--color-gray);
  padding-top: 8px;
}

/* 频道分类速览 */
.channel-overview-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 72px 24px 0;
}

.channel-list {
  border-top: 1px solid var(--color-line);
}

.channel-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 22px 8px;
  border-bottom: 1px solid var(--color-line);
  transition: background 0.2s ease;
}

.channel-item:hover {
  background: var(--color-bg-soft);
}

.channel-index {
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  width: 48px;
  flex-shrink: 0;
  letter-spacing: 0.06em;
}

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

.channel-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.channel-desc {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
}

.channel-entry {
  flex-shrink: 0;
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  padding: 8px 16px;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  transition: background 0.2s ease, color 0.2s ease;
}

.channel-entry:hover {
  background: var(--color-accent);
  color: var(--color-surface);
  border-color: var(--color-accent);
}

/* 片单横向轨道 */
.playlist-preview-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 72px 24px 0;
}

.playlist-track {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}

.playlist-card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s ease;
}

.playlist-card:hover {
  border-color: var(--color-ink);
}

.playlist-figure {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.playlist-figure img {
  transition: transform 0.3s ease;
}

.playlist-card:hover .playlist-figure img {
  transform: scale(1.03);
}

.playlist-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  padding: 16px 20px 4px;
  line-height: 1.5;
}

.playlist-meta {
  padding: 0 20px 8px;
  font-size: 13px;
  color: var(--color-accent);
  font-family: var(--font-title);
}

.playlist-desc {
  padding: 0 20px 12px;
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
  flex: 1;
}

.playlist-card .playlist-link {
  display: block;
  padding: 12px 20px;
  border-top: 1px solid var(--color-line);
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  transition: color 0.2s ease, background 0.2s ease;
}

.playlist-card .playlist-link:hover {
  background: var(--color-bg-soft);
  color: var(--color-accent);
}

/* 轨道控制按钮 */
.track-controls {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.track-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-ink);
  font-size: 18px;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.track-btn:hover {
  background: var(--color-ink);
  color: var(--color-bg);
  border-color: var(--color-ink);
}

/* 观看路径三步骤 */
.watch-path-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 72px 24px 0;
}

.path-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.path-step {
  position: relative;
  padding: 32px 24px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  counter-increment: step;
}

.path-step .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-ink);
  color: var(--color-bg);
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

.step-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.step-desc {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
  margin-bottom: 12px;
}

.step-link {
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s ease;
}

.step-link:hover {
  gap: 8px;
}

/* ==========================================================================
   Components · 内页通用（频道页 / 题材页 / 片单页 / 观看指南 / 说明页）
   ========================================================================== */

/* 页头主图区（频道页 / 片单页） */
.page-lead-media {
  margin-bottom: 56px;
}

.lead-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}

.lead-figure img {
  aspect-ratio: 21 / 9;
  width: 100%;
}

.lead-figure figcaption {
  font-size: 13px;
  color: var(--color-gray);
  padding: 12px 4px 0;
  border-top: none;
}

/* --- 频道页 --- */

/* 频道划分依据 */
.channel-criteria {
  margin-bottom: 56px;
}

.channel-criteria h2 {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 24px;
  padding-left: 16px;
  position: relative;
}

.channel-criteria h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.15em;
  width: 4px;
  height: 1.1em;
  background: var(--color-accent);
  border-radius: 2px;
}

.criteria-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.criteria-card {
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
}

.criteria-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.criteria-card p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.8;
  margin-bottom: 8px;
}

.criteria-card p:last-child {
  margin-bottom: 0;
}

/* 频道分布表 */
.channel-overview-table {
  margin-bottom: 56px;
}

.channel-overview-table h2 {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 24px;
  padding-left: 16px;
  position: relative;
}

.channel-overview-table h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.15em;
  width: 4px;
  height: 1.1em;
  background: var(--color-accent);
  border-radius: 2px;
}

.channel-overview-table table {
  min-width: 720px;
}

.channel-overview-table th {
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  text-align: left;
  padding: 14px 16px;
  border-bottom: 2px solid var(--color-line-strong);
  background: var(--color-bg-soft);
  white-space: nowrap;
}

.channel-overview-table td {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-line);
  vertical-align: top;
}

.channel-overview-table tbody tr:last-child td {
  border-bottom: none;
}

.channel-overview-table tbody tr:hover {
  background: var(--color-bg-soft);
}

/* 频道热点时间线 */
.channel-trends {
  margin-bottom: 56px;
}

.channel-trends h2 {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 24px;
  padding-left: 16px;
  position: relative;
}

.channel-trends h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.15em;
  width: 4px;
  height: 1.1em;
  background: var(--color-accent);
  border-radius: 2px;
}

.trend-list {
  border-left: 2px solid var(--color-line);
  padding-left: 24px;
}

.trend-item {
  position: relative;
  padding: 0 0 32px 24px;
}

.trend-item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-accent);
}

.trend-item time {
  display: inline-block;
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.trend-item h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 6px;
}

.trend-item p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
  max-width: 620px;
}

/* --- 题材页 --- */

/* 题材索引示意图 */
.topic-visual {
  margin-bottom: 48px;
}

.topic-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.topic-figure img {
  aspect-ratio: 21 / 8;
  width: 100%;
}

.topic-figure figcaption {
  font-size: 13px;
  color: var(--color-gray);
  padding: 12px 4px 0;
}

/* 使用法说明 */
.topic-guide {
  margin-bottom: 48px;
}

.guide-content p {
  font-size: 15px;
  color: var(--color-gray);
  line-height: 1.9;
  margin-bottom: 12px;
  max-width: 720px;
}

/* 题材索引分组 */
.topic-index {
  margin-bottom: 56px;
}

.topic-group {
  margin-bottom: 40px;
}

.topic-group-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-ink);
  margin-bottom: 16px;
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.topic-group-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--color-line);
}

.topic-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.topic-item {
  padding: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease;
}

.topic-item:hover {
  border-color: var(--color-accent);
}

.topic-item-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.topic-name {
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
}

.topic-tags {
  font-size: 12px;
  color: var(--color-accent);
  font-family: var(--font-title);
}

.topic-desc {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
  margin-bottom: 12px;
}

.topic-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 10px;
  border-top: 1px solid var(--color-line);
}

.topic-channel {
  font-size: 13px;
  color: var(--color-gray);
}

.topic-link {
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-accent);
}

.topic-link:hover {
  text-decoration: underline;
}

/* 近期题材走向 */
.topic-trends {
  margin-bottom: 56px;
}

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

.trend-card {
  padding: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  border-top: 3px solid var(--color-accent);
}

.trend-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.trend-desc {
  font-size: 13px;
  color: var(--color-gray);
  line-height: 1.7;
  margin-bottom: 12px;
}

.trend-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--color-accent);
  background: var(--color-bg-soft);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-family: var(--font-title);
}

/* 人群匹配指南 */
.audience-guide {
  margin-bottom: 48px;
}

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

.audience-item {
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
}

.audience-type {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.audience-desc {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
  margin-bottom: 12px;
}

/* 内页交叉导航（题材页） */
.inner-cross-nav {
  padding: 32px 0;
  border-top: 1px solid var(--color-line);
}

.cross-intro {
  font-size: 15px;
  color: var(--color-gray);
  margin-bottom: 20px;
  max-width: 720px;
}

.cross-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.cross-link {
  display: inline-block;
  padding: 10px 20px;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.cross-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-surface);
}

/* --- 片单页 --- */

/* 内容区块通用 */
.content-section {
  margin-bottom: 56px;
}

/* 步骤网格（片单编排三步） */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.step-card {
  padding: 28px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  position: relative;
  counter-increment: step-card;
}

.step-card .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-ink);
  color: var(--color-bg);
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 14px;
}

.step-card .step-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.step-card p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

/* 三种用途 */
.usage-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.usage-item {
  padding: 24px;
  background: var(--color-bg-soft);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--color-accent);
}

.usage-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.usage-item p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

/* 片单列表 */
.playlist-list {
  margin-top: 24px;
  border-top: 1px solid var(--color-line);
}

.playlist-item {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 20px 8px;
  border-bottom: 1px solid var(--color-line);
  transition: background 0.2s ease;
}

.playlist-item:hover {
  background: var(--color-bg-soft);
}

.playlist-main {
  flex: 1;
  min-width: 0;
}

.playlist-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.playlist-desc {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.6;
}

.playlist-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  flex-shrink: 0;
}

.playlist-meta li {
  font-size: 13px;
  color: var(--color-gray);
  font-family: var(--font-title);
  position: relative;
  padding-left: 12px;
}

.playlist-meta li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-accent);
  transform: translateY(-50%);
}

.playlist-item .playlist-link {
  flex-shrink: 0;
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  padding: 8px 16px;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  transition: background 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

.playlist-item .playlist-link:hover {
  background: var(--color-accent);
  color: var(--color-surface);
  border-color: var(--color-accent);
}

/* 内容配图 */
.media-section .content-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.media-section .content-figure img {
  aspect-ratio: 21 / 8;
  width: 100%;
}

.media-section .content-figure figcaption {
  font-size: 13px;
  color: var(--color-gray);
  padding: 12px 4px 0;
}

/* 原则列表 */
.principle-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.principle-item {
  padding: 20px;
  border-left: 2px solid var(--color-line-strong);
}

.principle-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.principle-item p {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

/* 交叉链接（片单页） */
.cross-link-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.cross-link-list .cross-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 24px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  transition: border-color 0.2s ease;
}

.cross-link-list .cross-link:hover {
  border-color: var(--color-accent);
}

.cross-link-title {
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
}

.cross-link-desc {
  font-size: 13px;
  color: var(--color-gray);
  line-height: 1.6;
}

/* --- 观看指南页 --- */

/* 开篇 */
.guide-opening {
  margin-bottom: 40px;
}

.opening-content {
  max-width: 720px;
}

.opening-text {
  font-size: 16px;
  color: var(--color-gray);
  line-height: 1.9;
  margin-bottom: 16px;
}

.opening-text:last-child {
  margin-bottom: 0;
}

/* 路径主图 */
.guide-figure {
  margin-bottom: 48px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.guide-hero-image {
  aspect-ratio: 21 / 8;
  width: 100%;
}

.guide-figure .figure-caption {
  font-size: 13px;
  color: var(--color-gray);
  padding: 12px 4px 0;
}

/* 四步纵向路径 */
.guide-steps {
  margin-bottom: 56px;
}

.guide-steps .section-title {
  margin-bottom: 8px;
}

.guide-steps .section-description {
  margin-bottom: 24px;
}

.steps-list {
  counter-reset: guide-step;
}

.step-item {
  position: relative;
  padding: 0 0 32px 56px;
  border-left: 2px solid var(--color-line);
  margin-left: 20px;
}

.step-item::before {
  counter-increment: guide-step;
  content: counter(guide-step);
  position: absolute;
  left: -19px;
  top: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-ink);
  color: var(--color-bg);
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.step-text {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.8;
  margin-bottom: 6px;
  max-width: 680px;
}

.step-text a {
  color: var(--color-accent);
  font-weight: 500;
}

.step-text a:hover {
  text-decoration: underline;
}

.step-example {
  font-size: 13px;
  color: var(--color-accent);
  background: var(--color-bg-soft);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  max-width: 680px;
  font-family: var(--font-title);
  line-height: 1.6;
}

/* 入口核验清单 */
.checklist-section {
  margin-bottom: 56px;
}

.checklist-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  margin-top: 24px;
}

.checklist-table {
  min-width: 640px;
}

.checklist-table th {
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
  text-align: left;
  padding: 14px 16px;
  border-bottom: 2px solid var(--color-line-strong);
  background: var(--color-bg-soft);
  white-space: nowrap;
}

.checklist-table td {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
  padding: 14px 16px;
  border-bottom: 1px solid var(--color-line);
  vertical-align: top;
}

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

.checklist-table tbody tr:hover {
  background: var(--color-bg-soft);
}

/* 观看备注 */
.viewing-notes {
  margin-bottom: 56px;
}

.note-block {
  margin-bottom: 16px;
  padding: 20px 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-ink);
}

.note-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 6px;
}

.note-text {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

/* FAQ 折叠 */
.faq-section {
  margin-bottom: 56px;
}

/* 内页链接卡片 */
.inner-links-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.inner-link-card {
  padding: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease;
}

.inner-link-card:hover {
  border-color: var(--color-accent);
}

.link-card-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 6px;
}

.link-card-text {
  font-size: 13px;
  color: var(--color-gray);
  line-height: 1.6;
}

/* --- 说明与反馈页 --- */

/* 页头图文组合 */
.page-lead {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 56px;
}

.lead-media .lead-figure img {
  aspect-ratio: 4 / 3;
}

.lead-text p {
  font-size: 16px;
  color: var(--color-gray);
  line-height: 1.9;
  margin-bottom: 16px;
}

.lead-text p:last-child {
  margin-bottom: 0;
}

/* 边界清单 */
.boundary-section,
.principle-section,
.feedback-section,
.confirm-section {
  margin-bottom: 56px;
}

.boundary-list {
  margin-top: 24px;
  counter-reset: boundary;
}

.boundary-item {
  position: relative;
  padding: 0 0 24px 48px;
  counter-increment: boundary;
}

.boundary-item::before {
  content: counter(boundary, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent);
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
}

.boundary-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.boundary-text {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
  max-width: 680px;
}

/* 调整原则卡 */
.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.principle-card {
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-line);
}

.card-text {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

/* 反馈处理流程 */
.process-list {
  margin-top: 32px;
  position: relative;
}

.process-item {
  display: flex;
  gap: 20px;
  padding: 0 0 32px;
  position: relative;
}

.process-item::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 40px;
  bottom: 0;
  width: 2px;
  background: var(--color-line);
}

.process-item:last-child::before {
  display: none;
}

.process-step {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-ink);
  color: var(--color-bg);
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.process-body {
  padding-top: 4px;
}

.process-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.process-text {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
  max-width: 560px;
}

/* 反馈前确认 */
.confirm-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.confirm-item {
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  position: relative;
}

.confirm-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-surface);
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
}

.confirm-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 6px;
}

.confirm-text {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.7;
}

.confirm-note {
  margin-top: 20px;
  font-size: 13px;
  color: var(--color-gray);
  background: var(--color-bg-soft);
  padding: 14px 20px;
  border-radius: var(--radius-sm);
  line-height: 1.7;
}

/* 页脚导航链接（说明页） */
.page-links {
  padding: 32px 0;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 0;
}

.page-links-title {
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.page-links-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-links-list a {
  display: inline-block;
  padding: 8px 18px;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-ink);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-links-list a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ==========================================================================
   Pages · 404 页
   ========================================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  flex: 1;
}

.error-section {
  text-align: center;
  max-width: 560px;
}

.error-code {
  font-family: var(--font-title);
  font-size: 72px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-section h1 {
  font-size: 28px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.error-desc {
  font-size: 16px;
  color: var(--color-gray);
  line-height: 1.8;
  margin-bottom: 32px;
}

.error-home-link {
  display: inline-block;
  padding: 14px 32px;
  background: var(--color-ink);
  color: var(--color-bg);
  border-radius: var(--radius-sm);
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 500;
  transition: background 0.2s ease;
}

.error-home-link:hover {
  background: var(--color-accent);
  color: var(--color-surface);
}

/* ==========================================================================
   Responsive · 响应式断点
   ========================================================================== */

/* 平板及以下 */
@media (max-width: 1024px) {
  :root {
    --space-section: 56px;
  }

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

  .hero-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-title {
    font-size: 32px;
  }

  .hero-figure img {
    aspect-ratio: 16 / 9;
  }

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

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

  .footer-shell {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

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

  .page-lead {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* 移动端 */
@media (max-width: 768px) {
  :root {
    --header-h: 60px;
    --space-section: 48px;
  }

  /* 页头 */
  .header-shell {
    padding: 0 16px;
    gap: 12px;
  }

  .brand-name {
    font-size: 20px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
  }

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

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

  .nav-item a {
    padding: 14px 8px;
    border-bottom: 1px solid var(--color-line);
    font-size: 16px;
  }

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

  .nav-item.is-current a {
    border-bottom-color: var(--color-line);
    color: var(--color-accent);
    font-weight: 600;
  }

  /* 面包屑 */
  .breadcrumb {
    padding: 16px 0 12px;
  }

  /* 页面标题 */
  .page-header {
    padding: 16px 0 24px;
    margin-bottom: 24px;
  }

  .page-title {
    font-size: 26px;
  }

  .page-description {
    font-size: 15px;
  }

  /* 首页区块 */
  .hero-section {
    padding: 32px 0 0;
  }

  .hero-layout {
    padding: 0 16px;
  }

  .hero-copy {
    padding: 8px 0;
  }

  .hero-title {
    font-size: 28px;
    line-height: 1.35;
  }

  .hero-lead {
    font-size: 15px;
    margin-bottom: 20px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .hero-link {
    justify-content: center;
  }

  .hero-timeline {
    margin-top: 32px;
    padding: 14px 16px;
    gap: 6px 20px;
  }

  .timeline-item {
    font-size: 12px;
  }

  .monthly-direction-section,
  .channel-overview-section,
  .playlist-preview-section,
  .watch-path-section {
    padding: 48px 16px 0;
  }

  .section-title {
    font-size: 20px;
  }

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

  .direction-card {
    padding: 20px;
  }

  .section-figure img {
    aspect-ratio: 4 / 3;
  }

  .channel-item {
    flex-wrap: wrap;
    gap: 8px 16px;
    padding: 16px 4px;
  }

  .channel-index {
    width: auto;
  }

  .channel-info {
    flex-basis: 100%;
    order: 3;
  }

  .channel-entry {
    margin-left: auto;
  }

  .playlist-track {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .path-steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .path-step {
    padding: 24px 20px;
  }

  .track-controls {
    display: none;
  }

  .related-links {
    padding: 32px 16px 0;
  }

  /* 内页通用 */
  .inner-main {
    padding: 0 16px 48px;
  }

  .page-lead-media {
    margin-bottom: 32px;
  }

  .lead-figure img {
    aspect-ratio: 4 / 3;
  }

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

  .cross-links-shell {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* 频道页表格 */
  .channel-overview-table {
    margin-bottom: 32px;
  }

  .channel-overview-table h2 {
    font-size: 20px;
  }

  .trend-list {
    padding-left: 16px;
  }

  .trend-item {
    padding-left: 16px;
  }

  .trend-item::before {
    left: -25px;
  }

  /* 题材页 */
  .topic-visual {
    margin-bottom: 32px;
  }

  .topic-figure img {
    aspect-ratio: 4 / 3;
  }

  .topic-guide {
    margin-bottom: 32px;
  }

  .topic-index {
    margin-bottom: 40px;
  }

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

  .topic-group-title {
    font-size: 16px;
  }

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

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

  .audience-item {
    padding: 20px;
  }

  /* 片单页 */
  .content-section {
    margin-bottom: 40px;
  }

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

  .usage-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .playlist-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 20px 4px;
  }

  .playlist-meta {
    flex-wrap: wrap;
  }

  .playlist-item .playlist-link {
    align-self: flex-start;
  }

  .principle-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .cross-link-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .media-section .content-figure img {
    aspect-ratio: 4 / 3;
  }

  /* 观看指南页 */
  .guide-figure {
    margin-bottom: 32px;
  }

  .guide-hero-image {
    aspect-ratio: 4 / 3;
  }

  .guide-steps {
    margin-bottom: 40px;
  }

  .step-item {
    padding-left: 48px;
    margin-left: 12px;
  }

  .step-item::before {
    left: -17px;
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .checklist-section,
  .viewing-notes,
  .faq-section {
    margin-bottom: 40px;
  }

  .checklist-table-wrap {
    margin-top: 16px;
  }

  .note-block {
    padding: 16px 20px;
  }

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

  .faq-question {
    padding: 14px 16px;
    font-size: 14px;
  }

  .faq-answer {
    padding: 12px 16px;
    font-size: 14px;
  }

  /* 说明页 */
  .page-lead {
    margin-bottom: 40px;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .lead-media .lead-figure img {
    aspect-ratio: 4 / 3;
  }

  .boundary-section,
  .principle-section,
  .feedback-section,
  .confirm-section {
    margin-bottom: 40px;
  }

  .boundary-item {
    padding-left: 44px;
  }

  .boundary-item::before {
    width: 30px;
    height: 30px;
    font-size: 13px;
  }

  .boundary-title {
    font-size: 15px;
  }

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

  .principle-card {
    padding: 20px;
  }

  .process-item {
    gap: 16px;
  }

  .process-step {
    width: 36px;
    height: 36px;
    font-size: 14px;
  }

  .confirm-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .confirm-item {
    padding: 20px;
  }

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

  .footer-brand {
    grid-column: auto;
  }

  .footer-bottom {
    padding: 16px;
  }

  .footer-bottom p {
    font-size: 12px;
  }
}

/* 超小屏（≤ 420px） */
@media (max-width: 420px) {
  .brand-logo::before {
    width: 4px;
    height: 22px;
  }

  .brand-name {
    font-size: 18px;
  }

  .hero-title {
    font-size: 24px;
  }

  .hero-lead {
    font-size: 14px;
  }

  .hero-link {
    padding: 12px 16px;
    font-size: 14px;
  }

  .timeline-item {
    font-size: 11px;
    padding-left: 10px;
  }

  .page-title {
    font-size: 24px;
  }

  .step-item {
    padding-left: 40px;
  }

  .step-item::before {
    left: -15px;
    width: 28px;
    height: 28px;
    font-size: 13px;
  }

  .channel-name {
    font-size: 16px;
  }

  .channel-entry {
    font-size: 13px;
    padding: 6px 12px;
  }

  .playlist-card h3 {
    font-size: 15px;
  }
}

/* 程序验收反馈：移动端防溢出 */
@media (max-width: 768px) {
  .site-main,
  .site-main * {
    min-width: 0;
    max-width: 100%;
  }

  .site-main :is(h1, h2, h3, h4, p, a, span) {
    overflow-wrap: anywhere;
  }
}