/* ==========================================================================
  糖心vlog · 整站样式表
  视觉方向：会议资料风 · 白底浅灰背景 · 深蓝绿主色 · 暖橙点缀
  ========================================================================== */

/* ==========================================================================
   Base · 基础变量与全局重置
   ========================================================================== */

:root {
  --color-primary: #164B60;
  --color-primary-dark: #0F3A4B;
  --color-primary-light: #1F5E75;
  --color-accent: #ED6A5A;
  --color-accent-light: #F08A7C;
  --color-bg: #F7F9FA;
  --color-card: #FFFFFF;
  --color-text: #333333;
  --color-text-light: #6B7A85;
  --color-border: #E3E9ED;
  --color-border-light: #EEF2F4;

  --font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, 'Helvetica Neue', sans-serif;

  --container-width: 1200px;
  --container-padding: 24px;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  --shadow-card: 0 1px 3px rgba(22, 75, 96, 0.06), 0 1px 2px rgba(22, 75, 96, 0.04);
  --shadow-card-hover: 0 4px 12px rgba(22, 75, 96, 0.10), 0 2px 6px rgba(22, 75, 96, 0.06);

  --transition-base: 0.2s ease;
  --transition-smooth: 0.3s ease;

  --header-height: 64px;
}

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

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

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

strong {
  font-weight: 700;
}

/* ==========================================================================
   Layout · 全局布局骨架
   ========================================================================== */

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

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

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* 内页统一容器宽度 */
.inner-main {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
  padding-bottom: 56px;
}

/* ==========================================================================
   Components · Header 页头
   ========================================================================== */

.site-header {
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border-light);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 4px rgba(22, 75, 96, 0.04);
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 0.5px;
  line-height: 1.3;
}

.brand-name::after {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--color-accent);
  margin-left: 4px;
  vertical-align: middle;
}

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

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

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  line-height: 1.5;
  transition: color var(--transition-base), background-color var(--transition-base);
}

.nav-link:hover {
  color: var(--color-primary);
  background-color: rgba(22, 75, 96, 0.06);
}

.nav-link.is-current {
  color: var(--color-primary);
  font-weight: 600;
  background-color: rgba(22, 75, 96, 0.08);
}

.nav-link.is-current::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 14px;
  right: 14px;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 1px 1px 0 0;
}

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

.nav-toggle:hover {
  background-color: rgba(22, 75, 96, 0.06);
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 1px;
  transition: transform var(--transition-smooth), opacity var(--transition-smooth);
}

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

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

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

/* ==========================================================================
   Components · Footer 页脚
   ========================================================================== */

.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.85);
  margin-top: auto;
}

.footer-cols {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 32px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.footer-col h3.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: #FFFFFF;
  margin-bottom: 16px;
  line-height: 1.5;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-item {
  line-height: 1.5;
}

.footer-link {
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
  transition: color var(--transition-base);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 20px var(--container-padding);
  text-align: center;
}

.footer-bottom .footer-note,
.footer-bottom .footer-copy {
  max-width: var(--container-width);
  margin: 0 auto;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.6;
}

.footer-bottom .footer-copy {
  margin-top: 4px;
}

/* ==========================================================================
   Components · 面包屑
   ========================================================================== */

.breadcrumb {
  margin-bottom: 16px;
}

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

.breadcrumb-item {
  display: flex;
  align-items: center;
  font-size: 14px;
  color: var(--color-text-light);
}

.breadcrumb-item + .breadcrumb-item::before {
  content: '/';
  margin: 0 8px;
  color: var(--color-text-light);
  opacity: 0.5;
}

.breadcrumb-link {
  color: var(--color-text-light);
  font-size: 14px;
}

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

.breadcrumb-sep {
  margin: 0 8px;
  color: var(--color-text-light);
  opacity: 0.5;
  font-size: 14px;
}

.breadcrumb-current {
  font-size: 14px;
  color: var(--color-primary);
  font-weight: 500;
}

/* ==========================================================================
   Components · 页面标题区
   ========================================================================== */

.page-header {
  margin-bottom: 32px;
}

.page-header .page-title {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
  margin-bottom: 8px;
}

.page-header .page-desc,
.page-header .page-description,
.page-header .page-subtitle,
.page-header .page-intro {
  font-size: 16px;
  color: var(--color-text-light);
  line-height: 1.6;
  max-width: 720px;
}

/* 首页外的站点品牌标题（channels/featured/updates 旧结构） */
.site-brand-heading {
  font-size: 30px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.3;
}

/* ==========================================================================
   Components · 通用区块标题
   ========================================================================== */

.section-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.4;
  margin-bottom: 8px;
}

.section-desc,
.section-intro,
.section-lead,
.overview-intro,
.page-desc {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 20px;
}

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

/* ==========================================================================
   Components · 文本链接
   ========================================================================== */

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-primary);
  transition: color var(--transition-base), gap var(--transition-base);
}

.text-link::after {
  content: '→';
  font-size: 16px;
  line-height: 1;
  transition: transform var(--transition-base);
}

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

.text-link:hover::after {
  transform: translateX(3px);
}

/* ==========================================================================
   Components · 卡片通用
   ========================================================================== */

.channel-card,
.featured-card,
.tool-card,
.device-card,
.tip-card,
.version-card,
.sidebar-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.channel-card:hover,
.featured-card:hover,
.tool-card:hover,
.device-card:hover,
.tip-card:hover,
.version-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
}

/* ==========================================================================
   Components · 频道色标
   ========================================================================== */

.channel-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.channel-dot-primary {
  background-color: var(--color-primary);
}

.channel-dot-warm {
  background-color: var(--color-accent);
}

.channel-dot-teal {
  background-color: #2A9D8F;
}

.channel-dot-sand {
  background-color: #E9C46A;
}

.channel-dot-coral {
  background-color: #F4A261;
}

.channel-dot-gray {
  background-color: #8D99AE;
}

/* ==========================================================================
   Pages · 首页
   ========================================================================== */

.home-main {
  padding-bottom: 0;
}

/* --- Hero 工具中心 --- */

.hero-tools {
  background-color: var(--color-primary);
  padding: 56px 0 48px;
}

.hero-content {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.hero-title {
  font-size: 32px;
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.3;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.6;
  max-width: 640px;
  margin-bottom: 32px;
}

.tool-grid {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.tool-card {
  display: flex;
  flex-direction: column;
  padding: 24px 20px;
  border: none;
  border-radius: var(--radius-lg);
  background-color: rgba(255, 255, 255, 0.1);
  backdrop-filter: none;
  transition: background-color var(--transition-smooth), transform var(--transition-smooth);
}

.tool-card:hover {
  background-color: rgba(255, 255, 255, 0.18);
  transform: translateY(-3px);
  box-shadow: none;
}

.tool-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.tool-name {
  font-size: 18px;
  font-weight: 600;
  color: #FFFFFF;
  line-height: 1.4;
  margin-bottom: 8px;
}

.tool-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

/* --- 主栏 + 快讯 --- */

.main-column {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 0;
  display: grid;
  grid-template-columns: 7fr 3fr;
  gap: 32px;
  align-items: start;
}

.headline {
  min-width: 0;
}

.headline-article {
  background-color: var(--color-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.headline-figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background-color: var(--color-border-light);
}

.headline-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.headline-body {
  padding: 24px;
}

.headline-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 10px;
}

.headline-text {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

/* 快讯窄栏 */
.news-rail {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
}

.rail-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.4;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border-light);
  margin-bottom: 12px;
}

.rail-list {
  display: flex;
  flex-direction: column;
}

.rail-item {
  border-bottom: 1px solid var(--color-border-light);
}

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

.rail-link {
  display: block;
  padding: 12px 0;
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.5;
  transition: color var(--transition-base), padding-left var(--transition-base);
}

.rail-link:hover {
  color: var(--color-primary);
  padding-left: 4px;
}

/* --- 频道分区 --- */

.channel-grid {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 0;
}

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

.channel-card {
  display: block;
  padding: 20px;
  position: relative;
}

.channel-card .channel-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  background-color: var(--color-border-light);
}

.channel-card .channel-dot {
  position: absolute;
  top: 28px;
  right: 28px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--color-card);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.channel-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 6px;
}

.channel-brief {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* --- 专题片单 --- */

.featured-row {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 0;
}

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

.featured-card {
  display: block;
  overflow: hidden;
}

.featured-card .featured-cover {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background-color: var(--color-border-light);
}

.featured-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 6px;
}

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

.featured-card .featured-name,
.featured-card .featured-desc {
  padding: 0 20px;
}

.featured-card .featured-name {
  margin-top: 16px;
}

.featured-card .featured-desc {
  padding-bottom: 20px;
}

/* --- 指南 + FAQ --- */

.guide-and-faq {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.guide-block,
.faq-block {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.guide-steps {
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.guide-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
  line-height: 1;
}

.step-body {
  min-width: 0;
}

.step-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 4px;
}

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

.faq-list {
  margin: 20px 0;
  display: flex;
  flex-direction: column;
}

.faq-item {
  border-bottom: 1px solid var(--color-border-light);
}

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

.faq-link {
  display: block;
  padding: 12px 0;
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.5;
}

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

/* --- 更新摘要条 --- */

.update-banner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px var(--container-padding) 56px;
}

.update-content {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  box-shadow: var(--shadow-card);
}

.update-tag {
  display: inline-block;
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  line-height: 1.4;
}

.update-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 8px;
}

.update-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.update-point {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.5;
  position: relative;
  padding-left: 16px;
}

.update-point::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

.update-content .text-link {
  flex-shrink: 0;
}

/* --- 首页相关链接 --- */

.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding) 48px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 14px;
}

.related-links-label {
  color: var(--color-text-light);
}

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

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

/* ==========================================================================
   Pages · 频道分类页 channels.html
   ========================================================================== */

.page-channels .inner-main {
  padding-top: 32px;
}

/* 频道分类总览 */
.category-overview {
  margin-bottom: 32px;
}

.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.category-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: 100px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.5;
}

.category-tag .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.tag-daily .dot { background-color: var(--color-primary); }
.tag-travel .dot { background-color: var(--color-accent); }
.tag-food .dot { background-color: #2A9D8F; }
.tag-city .dot { background-color: #E9C46A; }

/* 主内容 + 右侧栏 */
.layout-shell {
  display: flex;
  flex-direction: column;
}

.content-cols {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  align-items: start;
}

/* 频道列表 */
.channel-list {
  min-width: 0;
}

.channel-item {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 20px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-card);
  align-items: start;
}

.channel-cover {
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-border-light);
}

.channel-cover img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

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

.channel-info .channel-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.channel-desc {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 10px;
}

.channel-related {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
}

.channel-related a {
  color: var(--color-primary);
  font-weight: 500;
}

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

/* 右侧相关推荐 */
.related-featured {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.aside-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.4;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border-light);
  margin-bottom: 16px;
}

.related-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 20px;
}

.related-item {
  border-bottom: 1px solid var(--color-border-light);
  padding-bottom: 12px;
}

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

.related-link {
  display: block;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.5;
  transition: color var(--transition-base);
}

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

.aside-more,
.aside-guide {
  margin-top: 8px;
  font-size: 14px;
}

.aside-more a,
.aside-guide a {
  color: var(--color-primary);
  font-weight: 500;
}

.aside-more a:hover,
.aside-guide a:hover {
  color: var(--color-accent);
}

/* ==========================================================================
   Pages · 专题片单页 featured.html
   ========================================================================== */

.page-featured .inner-main {
  padding-top: 32px;
}

/* 本周推荐片单 */
.current-featured {
  margin-bottom: 48px;
}

.featured-spotlight {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  align-items: center;
}

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

.spotlight-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

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

.featured-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 10px;
}

.featured-desc {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 20px;
}

.play-order {
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 16px 20px;
}

.order-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.order-steps {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.order-step {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.6;
}

.order-step::before {
  content: counter(step-counter);
  counter-increment: step-counter;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-size: 12px;
  font-weight: 600;
  flex-shrink: 0;
  line-height: 1;
  margin-top: 2px;
}

.order-steps {
  counter-reset: step-counter;
}

.related-link {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
}

.related-link a {
  color: var(--color-primary);
  font-weight: 500;
}

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

/* 更多专题片单 */
.more-featured {
  margin-bottom: 48px;
}

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

.featured-card {
  overflow: hidden;
  display: block;
}

.card-media {
  overflow: hidden;
  background-color: var(--color-border-light);
}

.card-media img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.card-content {
  padding: 16px 20px 20px;
}

.card-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 6px;
}

.card-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 10px;
}

.card-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-accent);
  background-color: rgba(237, 106, 90, 0.08);
  padding: 2px 10px;
  border-radius: 100px;
  line-height: 1.5;
}

/* 右侧相关指南 */
.related-guides {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
}

.guide-list {
  display: flex;
  flex-direction: column;
}

.guide-item {
  border-bottom: 1px solid var(--color-border-light);
}

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

.guide-item a {
  display: block;
  padding: 12px 0;
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.5;
}

.guide-item a:hover {
  color: var(--color-primary);
}

/* ==========================================================================
   Pages · 观看指南页 guide.html
   ========================================================================== */

.page-guide .inner-main {
  padding-top: 32px;
}

.page-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  align-items: start;
}

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

.guide-section {
  margin-bottom: 40px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 20px 0;
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 600;
  flex-shrink: 0;
  line-height: 1;
}

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

.step-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 4px;
}

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

.guide-figure {
  margin-top: 20px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-border-light);
}

.guide-img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
  display: block;
}

.figure-caption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
  background-color: var(--color-bg);
}

/* 收藏与历史记录 */
.feature-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.feature-item {
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 20px;
}

.feature-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 8px;
}

.feature-text {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* 多设备适配 */
.device-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 20px 0;
}

.device-card {
  padding: 20px;
}

.device-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 8px;
}

.device-text {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* 右侧相关面板 */
.related-panel {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.panel-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.4;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border-light);
  margin-bottom: 16px;
}

.panel-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 16px;
}

.panel-list details.faq-item {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 12px 16px;
}

.panel-list summary.faq-question {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  line-height: 1.5;
  list-style: none;
  position: relative;
  padding-right: 20px;
}

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

.panel-list summary.faq-question::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 0;
  font-size: 18px;
  color: var(--color-primary);
  line-height: 1.2;
}

.panel-list details[open] summary.faq-question::after {
  content: '−';
}

.panel-list .faq-answer {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border-light);
}

.panel-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
}

.panel-link:hover {
  color: var(--color-accent);
}

/* ==========================================================================
   Pages · 常见问题页 faq.html
   ========================================================================== */

.page-faq .inner-main {
  padding-top: 32px;
}

.page-faq .layout-shell {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  align-items: start;
}

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

.play-issues,
.entry-feedback,
.tips {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  margin-bottom: 32px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 20px 0;
}

.faq-list details.faq-item {
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  background-color: var(--color-bg);
}

.faq-list summary.faq-question {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  line-height: 1.5;
  list-style: none;
  position: relative;
  padding-right: 24px;
}

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

.faq-list summary.faq-question::after {
  content: '+';
  position: absolute;
  right: 0;
  top: 0;
  font-size: 20px;
  color: var(--color-primary);
  line-height: 1.2;
}

.faq-list details[open] summary.faq-question::after {
  content: '−';
}

.faq-list .faq-answer {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--color-border-light);
}

/* 反馈步骤 */
.feedback-steps {
  margin-top: 24px;
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 20px;
}

.sub-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.4;
  margin-bottom: 12px;
}

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

.step-list .step-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.6;
}

.step-list .step-num {
  width: 24px;
  height: 24px;
  font-size: 13px;
}

/* 自助排查提示 */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 16px;
}

.tip-card {
  padding: 20px;
}

.tip-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 6px;
}

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

/* 右侧栏 */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sidebar-card {
  padding: 20px;
}

.sidebar-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.4;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border-light);
  margin-bottom: 12px;
}

.sidebar-list {
  display: flex;
  flex-direction: column;
}

.sidebar-item {
  border-bottom: 1px solid var(--color-border-light);
}

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

.sidebar-item a {
  display: block;
  padding: 10px 0;
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.5;
}

.sidebar-item a:hover {
  color: var(--color-primary);
}

/* FAQ 配图 */
.faq-media {
  margin-top: 32px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-border-light);
}

.faq-image {
  width: 100%;
  aspect-ratio: 21 / 7;
  object-fit: cover;
  display: block;
}

.faq-media figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
  background-color: var(--color-card);
}

/* ==========================================================================
   Pages · 观看须知页 notice.html
   ========================================================================== */

.page-notice .inner-main {
  padding-top: 32px;
}

.page-notice .page-layout {
  grid-template-columns: 1fr 300px;
}

.site-explanation,
.watching-advice {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  margin-bottom: 32px;
}

.explanation-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border-light);
}

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

.explanation-item .item-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 6px;
}

.explanation-item .item-text {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.advice-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 16px;
}

.advice-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.advice-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 600;
  flex-shrink: 0;
  line-height: 1;
}

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

.advice-content h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 4px;
}

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

/* 入口核验提示 */
.entry-check {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.aside-lead {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 16px;
}

.check-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-border-light);
  margin-bottom: 16px;
}

.check-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.check-caption {
  padding: 8px 12px;
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
  background-color: var(--color-bg);
}

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

.check-item {
  border-bottom: 1px solid var(--color-border-light);
  padding-bottom: 14px;
}

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

.check-item .item-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: 4px;
}

.check-item .item-text {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ==========================================================================
   Pages · 更新说明页 updates.html
   ========================================================================== */

.page-updates .inner-main {
  padding-top: 32px;
}

/* 当前版本 */
.current-version {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  margin-bottom: 32px;
}

.current-version-head {
  margin-bottom: 20px;
}

.version-badge {
  display: inline-block;
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 100px;
  line-height: 1.5;
}

.version-summary {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 24px;
  align-items: start;
}

.version-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-border-light);
}

.version-figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
}

.version-figure figcaption {
  padding: 8px 12px;
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.5;
  background-color: var(--color-bg);
}

.version-notes {
  min-width: 0;
}

.version-desc {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.version-changelog {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.changelog-item {
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.6;
  position: relative;
  padding-left: 20px;
}

.changelog-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

/* 历史版本 */
.history-versions {
  margin-bottom: 32px;
}

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

.version-card {
  padding: 0;
  overflow: hidden;
}

.version-card details {
  width: 100%;
}

.version-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  cursor: pointer;
  list-style: none;
  transition: background-color var(--transition-base);
}

.version-card-head::-webkit-details-marker {
  display: none;
}

.version-card-head:hover {
  background-color: var(--color-bg);
}

.version-number {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.4;
}

.version-date {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.4;
}

.version-card .version-changelog {
  padding: 0 24px 20px;
  border-top: 1px solid var(--color-border-light);
  padding-top: 16px;
  margin-top: 0;
}

/* 更新订阅提示 */
.update-tips {
  margin-bottom: 32px;
}

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

.update-tips .tip-card {
  padding: 20px;
}

.tip-text {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

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

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

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--header-height) - 280px);
  padding: 48px var(--container-padding);
}

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

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 24px;
}

.error-link {
  display: inline-block;
  background-color: var(--color-primary);
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 500;
  padding: 10px 24px;
  border-radius: var(--radius-md);
  line-height: 1.5;
  transition: background-color var(--transition-base);
}

.error-link:hover {
  background-color: var(--color-primary-dark);
  color: #FFFFFF;
}

/* ==========================================================================
   Responsive · 响应式
   ========================================================================== */

/* --- 平板 1024px --- */
@media (max-width: 1024px) {
  .tool-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

  .content-cols {
    grid-template-columns: 1fr 260px;
    gap: 24px;
  }

  .page-layout {
    grid-template-columns: 1fr 260px;
    gap: 24px;
  }

  .page-faq .layout-shell {
    grid-template-columns: 1fr 260px;
    gap: 24px;
  }

  .channel-item {
    grid-template-columns: 200px 1fr;
  }
}

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

  /* 页头与导航 */
  .header-inner {
    height: var(--header-height);
  }

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

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-card);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: 0 4px 12px rgba(22, 75, 96, 0.08);
    display: block;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    gap: 2px;
  }

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

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

  .nav-link.is-current::after {
    left: 14px;
    right: auto;
    width: 3px;
    height: auto;
    top: 8px;
    bottom: 8px;
    border-radius: 2px;
  }

  /* 首页 */
  .hero-tools {
    padding: 40px 0 32px;
  }

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

  .hero-subtitle {
    font-size: 15px;
  }

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

  .tool-card {
    padding: 16px 14px;
  }

  .tool-icon {
    width: 36px;
    height: 36px;
    font-size: 17px;
    margin-bottom: 12px;
  }

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

  .tool-desc {
    font-size: 13px;
  }

  .main-column {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 32px;
  }

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

  .headline-body {
    padding: 20px;
  }

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

  .channel-grid,
  .featured-row {
    padding-top: 32px;
  }

  .channel-cards,
  .featured-cards,
  .featured-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .guide-and-faq {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 32px;
  }

  .guide-block,
  .faq-block {
    padding: 20px;
  }

  .update-banner {
    padding-top: 32px;
    padding-bottom: 40px;
  }

  .update-content {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
  }

  .update-points {
    flex-direction: column;
    gap: 6px;
  }

  .footer-cols {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 36px 16px 24px;
  }

  /* 内页通用 */
  .inner-main {
    padding-top: 24px !important;
    padding-bottom: 40px;
  }

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

  .page-header .page-title,
  .site-brand-heading {
    font-size: 24px;
  }

  .page-header .page-desc,
  .page-header .page-description,
  .page-header .page-subtitle,
  .page-header .page-intro {
    font-size: 15px;
  }

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

  /* 频道分类页 */
  .category-tags {
    gap: 8px;
  }

  .category-tag {
    padding: 4px 12px;
    font-size: 13px;
  }

  .content-cols {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .channel-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px;
  }

  .channel-cover img {
    aspect-ratio: 16 / 9;
  }

  .related-featured {
    position: static;
  }

  /* 专题片单页 */
  .featured-spotlight {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 20px;
  }

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

  .play-order {
    padding: 14px 16px;
  }

  .related-guides {
    margin-top: 0;
  }

  /* 观看指南页 */
  .page-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .guide-section {
    padding: 20px;
  }

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

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

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

  .related-panel {
    position: static;
  }

  /* 常见问题页 */
  .page-faq .layout-shell {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .play-issues,
  .entry-feedback,
  .tips {
    padding: 20px;
  }

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

  .sidebar {
    order: 3;
  }

  /* 观看须知页 */
  .page-notice .page-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .site-explanation,
  .watching-advice {
    padding: 20px;
  }

  .entry-check {
    position: static;
  }

  /* 更新说明页 */
  .version-summary {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .current-version {
    padding: 20px;
  }

  .version-card-head {
    padding: 14px 16px;
  }

  .version-card .version-changelog {
    padding: 14px 16px 16px;
  }

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

  /* 404 */
  .error-code {
    font-size: 56px;
  }

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

/* --- 小手机 390px --- */
@media (max-width: 390px) {
  .tool-grid {
    grid-template-columns: 1fr;
  }

  .tool-card {
    flex-direction: row;
    align-items: center;
    gap: 14px;
  }

  .tool-icon {
    margin-bottom: 0;
    flex-shrink: 0;
  }

  .tool-name {
    margin-bottom: 2px;
  }

  .tool-desc {
    font-size: 13px;
  }

  .channel-cards,
  .featured-cards,
  .featured-grid {
    grid-template-columns: 1fr;
  }

  .featured-card .featured-name,
  .featured-card .featured-desc {
    padding-left: 16px;
    padding-right: 16px;
  }

  .card-content {
    padding: 14px 16px 16px;
  }

  .main-column {
    padding-left: 16px;
    padding-right: 16px;
  }

  .headline-body {
    padding: 16px;
  }

  .guide-block,
  .faq-block {
    padding: 16px;
  }

  .step-item {
    gap: 10px;
  }

  .step-num {
    width: 24px;
    height: 24px;
    font-size: 13px;
  }

  .update-content {
    padding: 16px;
  }

  .footer-cols {
    padding-left: 16px;
    padding-right: 16px;
  }

  .channel-item {
    padding: 14px;
  }

  .featured-spotlight {
    padding: 16px;
  }

  .play-order {
    padding: 12px 14px;
  }

  .guide-section,
  .play-issues,
  .entry-feedback,
  .tips,
  .site-explanation,
  .watching-advice,
  .current-version {
    padding: 16px;
  }

  .faq-list details.faq-item {
    padding: 12px 14px;
  }

  .faq-list summary.faq-question {
    font-size: 14px;
  }

  .faq-list .faq-answer {
    font-size: 13px;
  }

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

  .tip-card {
    padding: 14px;
  }

  .version-badge {
    font-size: 13px;
    padding: 3px 10px;
  }

  .version-number {
    font-size: 15px;
  }

  .version-date {
    font-size: 13px;
  }
}