/* ============================================================
   糖心视频 · 全站样式表
   版本：1.0
   说明：文化场馆风格，米白底色，展签式文字
   ============================================================ */

/* ------------------------------------------------------------
   Base · 基础变量与重置
   ------------------------------------------------------------ */
:root {
  --color-bg: #f5f0e6;
  --color-surface: #fffdf8;
  --color-text: #2d2925;
  --color-accent: #9c4932;
  --color-secondary: #6d7a6c;
  --color-border: #d8cfbc;
  --color-focus: #5a6b8a;
  --color-muted: #7a7268;
  --color-white: #ffffff;

  --font-serif: Georgia, 'Times New Roman', 'Songti SC', 'SimSun', serif;
  --font-sans: Arial, 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  --container-width: 1200px;
  --container-padding: 24px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --space-2xl: 88px;

  --header-height: 72px;
  --transition-base: 0.2s ease;
  --shadow-card: 0 2px 8px rgba(45, 41, 37, 0.06);
  --shadow-hover: 0 6px 20px rgba(45, 41, 37, 0.1);
}

/* ------------------------------------------------------------
   Base · 全局重置
   ------------------------------------------------------------ */
*,
*::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-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

a:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

ul,
ol {
  list-style: none;
}

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

/* ------------------------------------------------------------
   Layout · 全站骨架
   ------------------------------------------------------------ */
.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: 100%;
}

.site-main {
  flex: 1 0 auto;
  width: 100%;
}

/* 内页主容器 */
.inner-main {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding) var(--space-xl);
}

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

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

.site-brand {
  flex-shrink: 0;
}

.site-brand a {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.02em;
  line-height: 1.2;
  text-decoration: none;
}

.site-brand a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* 主导航 */
.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-list li {
  position: relative;
}

.nav-list a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  line-height: 1.4;
  text-decoration: none;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.nav-list a:hover {
  background-color: rgba(156, 73, 50, 0.08);
  color: var(--color-accent);
  text-decoration: none;
}

.nav-list a.is-current {
  color: var(--color-accent);
  font-weight: 600;
  background-color: rgba(156, 73, 50, 0.06);
}

.nav-list a.is-current::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 14px;
  right: 14px;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 1px;
}

/* 汉堡按钮（默认隐藏） */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  position: relative;
}

.nav-toggle:hover {
  background-color: rgba(156, 73, 50, 0.06);
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 1px;
  position: relative;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

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

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

.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
  background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
  transform: rotate(45deg);
  top: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
  transform: rotate(-45deg);
  top: 0;
}

/* ------------------------------------------------------------
   Layout · 页脚
   ------------------------------------------------------------ */
.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
  width: 100%;
}

.footer-columns {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--container-padding) var(--space-lg);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-lg);
}

.footer-col h2 {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

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

.footer-brand {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  line-height: 1.3;
}

.footer-nav ul,
.footer-info ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-nav a,
.footer-info a {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  text-decoration: none;
}

.footer-nav a:hover,
.footer-info a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: var(--space-sm) var(--container-padding);
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.6;
  max-width: var(--container-width);
  margin: 0 auto;
}

/* ------------------------------------------------------------
   Layout · 面包屑
   ------------------------------------------------------------ */
.breadcrumb {
  padding: var(--space-sm) 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 14px;
  color: var(--color-muted);
}

.breadcrumb a {
  color: var(--color-muted);
  text-decoration: none;
  line-height: 1.5;
}

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

.breadcrumb-sep {
  color: var(--color-border);
  font-size: 13px;
}

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

/* ------------------------------------------------------------
   Layout · 页面标题区
   ------------------------------------------------------------ */
.page-header {
  padding: var(--space-md) 0 var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-lg);
}

.page-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.page-description {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-muted);
  max-width: 720px;
}

/* ------------------------------------------------------------
   Components · 按钮
   ------------------------------------------------------------ */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  line-height: 1.5;
  text-decoration: none;
  transition: background-color var(--transition-base), color var(--transition-base), box-shadow var(--transition-base);
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  border: 1px solid var(--color-accent);
}

.btn-primary:hover {
  background-color: #843d2a;
  color: var(--color-white);
  text-decoration: none;
  box-shadow: var(--shadow-hover);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.btn-secondary:hover {
  background-color: rgba(156, 73, 50, 0.08);
  color: var(--color-accent);
  text-decoration: none;
}

/* ------------------------------------------------------------
   Components · 区块标题
   ------------------------------------------------------------ */
.section-heading {
  margin-bottom: var(--space-md);
}

.section-heading h2,
.section-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.section-heading p,
.section-desc,
.section-note {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-muted);
  max-width: 680px;
}

/* ------------------------------------------------------------
   Components · 频道卡片（展签式）
   ------------------------------------------------------------ */
.channel-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.channel-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.channel-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  object-position: center;
}

.channel-card h3,
.channel-card h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.4;
}

.channel-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-muted);
  margin-bottom: var(--space-xs);
}

.channel-card a {
  display: inline-block;
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  padding-top: 6px;
}

.channel-card a:hover {
  text-decoration: underline;
}

/* 首页频道阵列 */
.channel-array {
  padding: var(--space-2xl) var(--container-padding);
  max-width: var(--container-width);
  margin: 0 auto;
  width: 100%;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.channel-card h3 {
  padding: 0 16px;
  margin-top: 14px;
}

.channel-card .channel-card-desc {
  padding: 0 16px;
}

.channel-card .channel-card-link {
  padding: 0 16px 16px;
}

.channel-array-more {
  text-align: center;
  margin-top: var(--space-lg);
}

.channel-array-more a {
  font-size: 15px;
  font-weight: 600;
}

/* 内页频道卡片 */
.card-media {
  background-color: var(--color-surface);
  overflow: hidden;
}

.card-media img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  object-position: center;
}

.card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.4;
}

.card-tag {
  display: inline-block;
  font-size: 13px;
  color: var(--color-accent);
  background-color: rgba(156, 73, 50, 0.08);
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 8px;
  line-height: 1.5;
  align-self: flex-start;
}

.card-desc {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 8px;
}

.card-audience {
  font-size: 13px;
  color: var(--color-secondary);
  line-height: 1.6;
  margin-top: auto;
  padding-top: 6px;
  border-top: 1px solid var(--color-border);
}

/* ------------------------------------------------------------
   Components · 时间线
   ------------------------------------------------------------ */
.timeline-item {
  position: relative;
  padding-left: 24px;
  padding-bottom: var(--space-md);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-accent);
  border: 2px solid var(--color-surface);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-item:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 22px;
  bottom: 0;
  width: 2px;
  background-color: var(--color-border);
}

.timeline-tag {
  display: inline-block;
  font-size: 13px;
  color: var(--color-accent);
  background-color: rgba(156, 73, 50, 0.08);
  padding: 2px 10px;
  border-radius: 999px;
  margin-bottom: 6px;
  font-weight: 600;
}

.timeline-item p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
}

.timeline-item strong {
  font-weight: 600;
  color: var(--color-text);
}

.timeline-date {
  font-size: 14px;
  color: var(--color-muted);
  font-weight: 500;
  margin-bottom: 4px;
}

.timeline-body h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
  line-height: 1.4;
}

.timeline-body p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

/* ------------------------------------------------------------
   Components · 节目单时间线（首页与内页共用）
   ------------------------------------------------------------ */
.timeline-preview {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.timeline-preview .timeline-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 16px 14px 40px;
  margin-bottom: var(--space-xs);
}

.timeline-preview .timeline-item::before {
  left: 16px;
  top: 18px;
}

.timeline-preview .timeline-item:not(:last-child)::after {
  left: 20px;
  top: 34px;
  bottom: -8px;
}

/* 内页时间线列表 */
.timeline-list {
  position: relative;
  padding-left: 0;
}

.timeline-list .timeline-item {
  padding-left: 28px;
}

.timeline-list .timeline-item::before {
  left: 4px;
}

.timeline-list .timeline-item:not(:last-child)::after {
  left: 8px;
}

/* ------------------------------------------------------------
   Components · 节目单页面
   ------------------------------------------------------------ */
.current-updates,
.upcoming-previews,
.past-schedule {
  margin-bottom: var(--space-2xl);
}

.current-updates h2,
.upcoming-previews h2,
.past-schedule h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.update-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.update-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  transition: box-shadow var(--transition-base);
}

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

.update-item h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
  line-height: 1.4;
}

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

.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.preview-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.preview-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.preview-card h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.4;
}

.preview-time {
  font-size: 14px;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 6px;
}

.preview-card p:last-child {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

/* 相关栏目 */
.related-links {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-xl) 0;
}

.related-links h2 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.related-links ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.related-links a {
  font-size: 15px;
  color: var(--color-accent);
  text-decoration: none;
  padding: 4px 12px;
  background-color: rgba(156, 73, 50, 0.06);
  border-radius: 999px;
  line-height: 1.5;
  display: inline-block;
}

.related-links a:hover {
  background-color: rgba(156, 73, 50, 0.12);
  text-decoration: none;
}

/* 节目单配图 */
.schedule-figure {
  margin: var(--space-xl) 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.schedule-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  object-position: center;
}

.schedule-figure figcaption {
  padding: 12px var(--space-md);
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  text-align: center;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

/* ------------------------------------------------------------
   Components · 频道阵容页面
   ------------------------------------------------------------ */
.channel-index {
  margin-bottom: var(--space-xl);
}

.index-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.index-list a {
  display: inline-block;
  padding: 8px 20px;
  font-size: 15px;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  text-decoration: none;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

.index-list a:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
  text-decoration: none;
}

.channel-group {
  margin-bottom: var(--space-2xl);
}

.group-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  line-height: 1.4;
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--color-border);
}

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

.channel-extra {
  margin-top: var(--space-2xl);
}

.extra-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}

.extra-links a {
  font-size: 15px;
  color: var(--color-accent);
  text-decoration: none;
  line-height: 1.6;
}

.extra-links a:hover {
  text-decoration: underline;
}

/* ------------------------------------------------------------
   Components · 热门榜
   ------------------------------------------------------------ */
.rankings-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.ranking-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.ranking-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.ranking-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: 12px;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.ranking-item:hover {
  background-color: rgba(156, 73, 50, 0.04);
  box-shadow: var(--shadow-card);
}

.ranking-number {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-accent);
  background-color: rgba(156, 73, 50, 0.08);
  border-radius: 50%;
  margin-top: 2px;
}

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

.ranking-name {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 2px;
  line-height: 1.4;
}

.ranking-tag {
  font-size: 13px;
  color: var(--color-secondary);
  margin-bottom: 4px;
  line-height: 1.5;
}

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

.ranking-badge {
  flex-shrink: 0;
  font-size: 13px;
  color: var(--color-secondary);
  background-color: rgba(109, 122, 108, 0.1);
  padding: 2px 10px;
  border-radius: 999px;
  line-height: 1.5;
  white-space: nowrap;
  align-self: flex-start;
}

/* 榜单说明 */
.ranking-notes {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-lg);
  align-items: center;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.notes-content h2 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.notes-content p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.8;
}

.ranking-media {
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-bg);
}

.ranking-media img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  object-position: center;
}

.ranking-media figcaption {
  padding: 8px 12px;
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.6;
  text-align: center;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

/* 榜单链接 */
.ranking-links {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
}

.ranking-links h2 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.link-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.link-list a {
  font-size: 15px;
  color: var(--color-accent);
  text-decoration: none;
  padding: 4px 12px;
  background-color: rgba(156, 73, 50, 0.06);
  border-radius: 999px;
  line-height: 1.5;
  display: inline-block;
}

.link-list a:hover {
  background-color: rgba(156, 73, 50, 0.12);
  text-decoration: none;
}

/* ------------------------------------------------------------
   Components · 观看手册
   ------------------------------------------------------------ */
.layout-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.sidebar-left {
  grid-template-columns: 240px 1fr;
}

.sidebar-left .term-index {
  order: 1;
}

.sidebar-left .guide-content {
  order: 2;
}

.term-index {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  position: sticky;
  top: calc(var(--header-height) + 20px);
}

.term-index h2 {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  line-height: 1.4;
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-border);
}

.term-index ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.term-index a {
  display: block;
  padding: 6px 10px;
  font-size: 14px;
  color: var(--color-muted);
  border-radius: var(--radius-sm);
  line-height: 1.5;
  text-decoration: none;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.term-index a:hover {
  background-color: rgba(156, 73, 50, 0.06);
  color: var(--color-accent);
  text-decoration: none;
}

/* 浏览步骤 */
.guide-content {
  min-width: 0;
}

.guide-steps {
  margin-bottom: var(--space-xl);
}

.guide-steps h2,
.glossary h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.guide-steps > p {
  font-size: 15px;
  color: var(--color-muted);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.step-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  counter-reset: step-counter;
}

.step-item {
  position: relative;
  padding: var(--space-md);
  padding-left: 68px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  counter-increment: step-counter;
}

.step-item::before {
  content: counter(step-counter);
  position: absolute;
  left: 16px;
  top: 20px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-accent);
  background-color: rgba(156, 73, 50, 0.08);
  border-radius: 50%;
}

.step-item h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.4;
}

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

.guide-steps > p:last-child {
  margin-top: var(--space-md);
  font-size: 14px;
  color: var(--color-muted);
  background-color: rgba(109, 122, 108, 0.08);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  line-height: 1.7;
}

/* 术语表 */
.glossary-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.glossary-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  scroll-margin-top: calc(var(--header-height) + 20px);
}

.glossary-item dt {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
  line-height: 1.4;
}

.glossary-item dd {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

/* FAQ */
.faq-section {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.faq-section h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.faq-section > p {
  font-size: 15px;
  color: var(--color-muted);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.faq-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-xs);
  overflow: hidden;
}

.faq-item summary {
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  line-height: 1.5;
  list-style: none;
  position: relative;
  padding-right: 44px;
  transition: background-color var(--transition-base);
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-accent);
  font-weight: 400;
  transition: transform var(--transition-base);
}

.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.faq-item summary:hover {
  background-color: rgba(156, 73, 50, 0.04);
}

.faq-item p {
  padding: 0 20px 14px;
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
}

/* 手册配图 */
.guide-figure {
  margin: var(--space-xl) 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.guide-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  object-position: center;
}

.guide-figure figcaption {
  padding: 12px var(--space-md);
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  text-align: center;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

/* 相关链接横条 */
.guide-figure + .related-links {
  margin-top: 0;
}

.related-links-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-right: var(--space-sm);
}

.related-links-item {
  font-size: 14px;
  color: var(--color-accent);
  text-decoration: none;
  margin-right: var(--space-sm);
  line-height: 1.5;
}

.related-links-item:hover {
  text-decoration: underline;
}

/* ------------------------------------------------------------
   Components · 历史档案
   ------------------------------------------------------------ */
.archive-section {
  margin-bottom: var(--space-2xl);
}

.timeline-wrap {
  position: relative;
  padding-left: 24px;
  margin-top: var(--space-md);
}

.timeline-wrap::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background-color: var(--color-border);
}

.archive-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.archive-timeline .timeline-item {
  padding-left: 0;
}

.archive-timeline .timeline-item::before {
  left: -24px;
  top: 8px;
}

.archive-timeline .timeline-item:not(:last-child)::after {
  display: none;
}

.archive-figure {
  margin-top: var(--space-xl);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.archive-figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  object-position: center;
}

.archive-figure figcaption {
  padding: 12px var(--space-md);
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  text-align: center;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

/* 相关栏目导航 */
.archive-links {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-top: var(--space-xl);
}

.archive-links p {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  line-height: 1.5;
}

.archive-links ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.archive-links a {
  font-size: 14px;
  color: var(--color-accent);
  text-decoration: none;
  padding: 4px 12px;
  background-color: rgba(156, 73, 50, 0.06);
  border-radius: 999px;
  line-height: 1.5;
  display: inline-block;
}

.archive-links a:hover {
  background-color: rgba(156, 73, 50, 0.12);
  text-decoration: none;
}

/* ------------------------------------------------------------
   Components · 404 页面
   ------------------------------------------------------------ */
.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl) var(--container-padding);
  flex: 1;
}

.error-panel {
  text-align: center;
  max-width: 560px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.error-code {
  font-family: var(--font-serif);
  font-size: 64px;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.2;
  margin-bottom: var(--space-sm);
}

.error-panel h1 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.error-desc {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.error-actions {
  margin-bottom: var(--space-md);
}

.error-tip {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ------------------------------------------------------------
   Pages · 首页
   ------------------------------------------------------------ */
.home-main {
  width: 100%;
}

/* 公告栏首屏 */
.notice-hero {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-xl) var(--container-padding);
  position: relative;
}

.notice-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background-color: var(--color-accent);
}

.notice-hero {
  max-width: var(--container-width);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: none;
}

.notice-hero::before {
  left: var(--container-padding);
  right: var(--container-padding);
}

.hero-text {
  min-width: 0;
}

.hero-text h1 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.hero-lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-muted);
  margin-bottom: var(--space-md);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.hero-figure {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-bg);
  box-shadow: var(--shadow-card);
}

.hero-figure img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  object-position: center;
}

.notice-rules {
  grid-column: 1 / -1;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-top: var(--space-sm);
}

.notice-rules h2 {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.notice-rules ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs) var(--space-lg);
}

.notice-rules li {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  position: relative;
  padding-left: 16px;
}

.notice-rules li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

/* 节目单预告 */
.schedule-preview {
  padding: var(--space-2xl) var(--container-padding);
  max-width: var(--container-width);
  margin: 0 auto;
  width: 100%;
}

.schedule-preview .timeline-preview {
  margin-top: var(--space-md);
}

.schedule-more {
  text-align: center;
  margin-top: var(--space-lg);
}

.schedule-more a {
  font-size: 15px;
  font-weight: 600;
}

/* 热门榜预览 */
.rankings-preview {
  padding: var(--space-2xl) var(--container-padding);
  max-width: var(--container-width);
  margin: 0 auto;
  width: 100%;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.rank-preview-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-md);
}

.rank-column {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
}

.rank-column h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  line-height: 1.4;
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--color-border);
}

.rank-column ol {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rank-column li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 6px 0;
}

.rank-no {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-accent);
  background-color: rgba(156, 73, 50, 0.08);
  border-radius: 50%;
}

.rank-tag {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.5;
}

.rankings-more {
  text-align: center;
  margin-top: var(--space-lg);
}

.rankings-more a {
  font-size: 15px;
  font-weight: 600;
}

/* 观看手册入口 */
.guide-entry {
  padding: var(--space-2xl) var(--container-padding);
  max-width: var(--container-width);
  margin: 0 auto;
  width: 100%;
}

.step-guide {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.guide-step {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.guide-step:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-accent);
  background-color: rgba(156, 73, 50, 0.08);
  border-radius: 50%;
  margin-bottom: var(--space-xs);
}

.guide-step h3 {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
  line-height: 1.4;
}

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

.guide-more {
  text-align: center;
  margin-top: var(--space-lg);
}

.guide-more a {
  font-size: 15px;
  font-weight: 600;
}

/* 历史档案片段 */
.archive-preview {
  padding: var(--space-2xl) var(--container-padding);
  max-width: var(--container-width);
  margin: 0 auto;
  width: 100%;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.archive-mini-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.archive-item {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  padding: 12px var(--space-md);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.archive-date {
  flex-shrink: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  line-height: 1.5;
  font-family: var(--font-serif);
}

.archive-item p {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.6;
}

.archive-more {
  text-align: center;
  margin-top: var(--space-lg);
}

.archive-more a {
  font-size: 15px;
  font-weight: 600;
}

/* ------------------------------------------------------------
   Responsive · 响应式
   ------------------------------------------------------------ */
@media (max-width: 1024px) {
  :root {
    --container-padding: 20px;
  }

  .footer-columns {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }

  .rankings-layout {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .ranking-notes {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .layout-shell,
  .sidebar-left {
    grid-template-columns: 200px 1fr;
    gap: var(--space-md);
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 16px;
    --header-height: 60px;
    --space-2xl: 56px;
  }

  /* 页头 */
  .header-inner {
    padding: 0 var(--container-padding);
  }

  .site-brand a {
    font-size: 19px;
  }

  .nav-toggle {
    display: flex;
    flex-shrink: 0;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-sm) var(--container-padding);
    gap: 2px;
    width: 100%;
  }

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

  .nav-list a {
    padding: 12px 14px;
    font-size: 16px;
  }

  .nav-list a.is-current::after {
    display: none;
  }

  /* 公告栏 */
  .notice-hero {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

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

  .notice-rules ul {
    flex-direction: column;
    gap: var(--space-xs);
  }

  /* 频道阵列 */
  .channel-grid {
    grid-template-columns: 1fr;
  }

  .channel-group .channel-grid {
    grid-template-columns: 1fr;
  }

  /* 节目单 */
  .preview-grid {
    grid-template-columns: 1fr;
  }

  /* 热门榜 */
  .rank-preview-columns {
    grid-template-columns: 1fr;
  }

  /* 观看手册 */
  .step-guide {
    grid-template-columns: 1fr;
  }

  /* 内页布局 */
  .layout-shell,
  .sidebar-left {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .sidebar-left .term-index {
    order: 2;
  }

  .sidebar-left .guide-content {
    order: 1;
  }

  .term-index {
    position: static;
  }

  /* 页脚 */
  .footer-columns {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    padding: var(--space-lg) var(--container-padding);
  }

  /* 频道索引 */
  .index-list {
    gap: var(--space-xs);
  }

  /* 榜单 */
  .ranking-item {
    flex-wrap: wrap;
  }

  .ranking-badge {
    margin-left: 48px;
  }

  /* 时间线 */
  .timeline-item {
    padding-left: 20px;
  }

  .timeline-preview .timeline-item {
    padding-left: 36px;
  }

  .timeline-preview .timeline-item::before {
    left: 12px;
  }

  .timeline-preview .timeline-item:not(:last-child)::after {
    left: 16px;
  }

  /* 历史档案 */
  .archive-item {
    flex-direction: column;
    gap: 4px;
  }

  /* 404 */
  .error-panel {
    padding: var(--space-lg);
  }

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

@media (max-width: 480px) {
  .page-title {
    font-size: 24px;
  }

  .section-heading h2,
  .section-title {
    font-size: 20px;
  }

  .rank-column {
    padding: var(--space-sm);
  }

  .ranking-section {
    padding: var(--space-sm) var(--space-md);
  }

  .step-item {
    padding-left: 56px;
  }

  .step-item::before {
    left: 12px;
    width: 32px;
    height: 32px;
    font-size: 16px;
  }

  .footer-bottom {
    padding: var(--space-sm) var(--container-padding);
  }
}

/* ------------------------------------------------------------
   Accessibility · 可访问性与动效
   ------------------------------------------------------------ */
@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;
  }
}

/* 焦点可见性 */
:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* 滚动片段淡入（增强，不阻塞初始可见） */
.fade-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: no-preference) {
  .fade-in {
    transition: opacity 0.4s ease, transform 0.4s ease;
  }
}