/* ============================================================
   电影天堂 · goldfarmtech.com
   全站样式表 v1.0
   技术工作台风格：中性底色、紧凑控件、清晰状态
   ============================================================ */

/* ============================================================
   1. Base — 基础变量、重置、字体、通用元素
   ============================================================ */

:root {
  --color-bg: #f5f7fa;
  --color-text: #2c3e50;
  --color-accent: #1a7f6b;
  --color-accent-dark: #146554;
  --color-accent-light: #e6f2ef;
  --color-border: #e1e8f0;
  --color-white: #ffffff;
  --color-muted: #5d6b7a;
  --color-muted-light: #8a97a5;
  --color-divider: #edf1f5;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "JetBrains Mono", Consolas,
    "Courier New", monospace;

  --container-width: 1200px;
  --header-height: 64px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  --shadow-card: 0 1px 3px rgba(44, 62, 80, 0.06);
  --shadow-card-hover: 0 4px 12px rgba(44, 62, 80, 0.1);
  --shadow-header: 0 1px 2px rgba(44, 62, 80, 0.05);
}

*,
*::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: 1.6;
  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 0.2s ease;
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text);
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 12px;
}

strong {
  font-weight: 600;
}

/* 跳转正文链接 */
.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  z-index: 1000;
  background: var(--color-accent);
  color: #fff;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 8px;
  color: #fff;
  text-decoration: none;
}

/* ============================================================
   2. Layout — 页头、导航、页脚、主容器
   ============================================================ */

.site-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-header);
}

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

.brand {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.brand a {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-accent);
  letter-spacing: 0.01em;
}

.slogan {
  font-size: 13px;
  color: var(--color-muted);
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.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;
  transition: background-color 0.2s, color 0.2s;
}

.nav-list a:hover {
  background: var(--color-accent-light);
  color: var(--color-accent-dark);
  text-decoration: none;
}

.nav-list a.is-current {
  color: var(--color-accent);
  font-weight: 600;
  background: var(--color-accent-light);
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

.site-main.inner-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-lg) var(--space-3xl);
}

.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg) var(--space-3xl);
}

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

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

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

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

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

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

.page-header .page-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

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

/* 页脚 */
.site-footer {
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
}

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

.footer-col h2.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  font-size: 14px;
  color: var(--color-muted);
}

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

.footer-note {
  font-size: 13px;
  color: var(--color-muted-light);
  margin-top: var(--space-md);
  line-height: 1.5;
}

.footer-bottom {
  border-top: 1px solid var(--color-divider);
}

.footer-bottom p {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  font-size: 13px;
  color: var(--color-muted-light);
  text-align: center;
}

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

/* 区块标题 */
.section-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.section-desc {
  font-size: 15px;
  color: var(--color-muted);
  margin-bottom: 0;
}

.section-intro {
  font-size: 15px;
  color: var(--color-muted);
  margin-bottom: var(--space-lg);
}

.section-heading {
  margin-bottom: var(--space-lg);
}

/* 通用卡片基础 */
.channel-card,
.collection-card,
.trend-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.channel-card:hover,
.collection-card:hover,
.trend-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

/* FAQ 折叠 */
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  margin-bottom: var(--space-sm);
}

.faq-item summary {
  padding: var(--space-md);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 18px;
  font-weight: 400;
  color: var(--color-muted);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item .faq-answer,
.faq-item > p {
  padding: 0 var(--space-md) var(--space-md);
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.65;
}

.faq-item > p a {
  color: var(--color-accent);
  display: inline-block;
  margin-top: var(--space-xs);
}

/* 图片容器 */
figure {
  margin: 0;
}

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

figcaption {
  font-size: 13px;
  color: var(--color-muted-light);
  padding: var(--space-sm) 0;
  text-align: center;
}

/* ============================================================
   4. Pages — 首页
   ============================================================ */

/* 频道分类面板 */
.channel-panel {
  margin-bottom: var(--space-xl);
}

.panel-heading {
  margin-bottom: var(--space-lg);
}

.panel-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.panel-desc {
  font-size: 15px;
  color: var(--color-muted);
  max-width: 640px;
}

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

.channel-card {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.channel-card-featured {
  grid-column: span 2;
  grid-row: span 2;
}

.channel-card .channel-name {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0;
}

.channel-card .channel-desc {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 0;
}

.channel-card .channel-topics {
  font-size: 13px;
  color: var(--color-muted-light);
  margin-top: auto;
  margin-bottom: var(--space-sm);
  line-height: 1.5;
}

.channel-card img {
  width: 100%;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.channel-card-featured img.channel-img-featured {
  height: 200px;
}

.channel-card img.channel-img {
  height: 120px;
}

.channel-card .channel-link {
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.channel-card .channel-link::after {
  content: "→";
  transition: transform 0.2s ease;
}

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

/* 信息边界提示 */
.info-boundary {
  background: var(--color-accent-light);
  border: 1px solid #c8e0da;
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-xl);
}

.boundary-text {
  font-size: 14px;
  color: var(--color-accent-dark);
  margin-bottom: 0;
  line-height: 1.6;
}

.boundary-text strong {
  font-weight: 600;
}

/* 专题精选 */
.featured-collections {
  margin-bottom: var(--space-xl);
}

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

.collection-card {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.collection-card-large {
  grid-column: span 2;
  grid-row: span 2;
}

.collection-card .collection-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0;
}

.collection-card .collection-summary {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 0;
}

.collection-card .collection-plan {
  font-size: 13px;
  color: var(--color-muted-light);
  margin-top: auto;
  margin-bottom: var(--space-sm);
  line-height: 1.5;
}

.collection-card img {
  width: 100%;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.collection-card-large img.collection-img {
  height: 180px;
}

.collection-card img.collection-img {
  height: 110px;
}

.collection-card .collection-link {
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.collection-card .collection-link::after {
  content: "→";
  transition: transform 0.2s ease;
}

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

/* 热播看点 */
.trending-insights {
  margin-bottom: var(--space-xl);
}

.trending-heading {
  margin-bottom: var(--space-lg);
}

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

.trend-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: box-shadow 0.2s ease;
}

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

.trend-item .trend-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.trend-item .trend-observation {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: var(--space-sm);
}

.trend-item .trend-link {
  font-size: 14px;
  font-weight: 500;
}

/* 观影指南步骤 */
.guide-steps {
  margin-bottom: var(--space-xl);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.guide-heading {
  margin-bottom: var(--space-lg);
}

.steps-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  counter-reset: step-counter;
}

.step-item {
  position: relative;
  padding-top: var(--space-lg);
}

.step-item::before {
  counter-increment: step-counter;
  content: counter(step-counter);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--color-accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border-radius: 50%;
  margin-bottom: var(--space-sm);
}

.step-item .step-name {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.step-item .step-desc {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 0;
}

.guide-entry-link {
  display: inline-block;
  margin-top: var(--space-lg);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 20px;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease;
}

.guide-entry-link:hover {
  background: var(--color-accent-dark);
  color: #fff;
  text-decoration: none;
}

/* 常见问题入口 */
.faq-entry {
  margin-bottom: var(--space-xl);
}

.faq-entry .section-title {
  margin-bottom: var(--space-lg);
}

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

.entry-link-item {
  display: block;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.entry-link-item:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-card-hover);
  color: var(--color-accent);
  text-decoration: none;
}

/* ============================================================
   5. Pages — 频道分类页
   ============================================================ */

.channel-grid-section {
  margin-bottom: var(--space-xl);
}

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

.channel-grid-section .channel-card {
  padding: 0;
  overflow: hidden;
}

.channel-grid-section .channel-card-featured {
  grid-column: span 2;
  grid-row: span 2;
}

.channel-card-media {
  overflow: hidden;
}

.channel-card-media img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.channel-card:hover .channel-card-media img {
  transform: scale(1.03);
}

.channel-card-featured .channel-card-media img {
  height: 260px;
}

.channel-card-body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  flex: 1;
}

.channel-card-body .channel-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
}

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

.channel-card-body .channel-card-meta {
  font-size: 13px;
  color: var(--color-muted-light);
  margin-top: auto;
}

.channel-card-body .channel-card-meta strong {
  color: var(--color-accent);
  font-weight: 500;
}

/* 频道对比表 */
.comparison-section {
  margin-bottom: var(--space-xl);
}

.comparison-table-wrap {
  overflow-x: auto;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 640px;
}

.comparison-table th,
.comparison-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-divider);
}

.comparison-table thead th {
  background: var(--color-bg);
  font-weight: 600;
  font-size: 13px;
  color: var(--color-text);
  white-space: nowrap;
}

.comparison-table tbody th {
  font-weight: 500;
  color: var(--color-text);
  white-space: nowrap;
}

.comparison-table tbody tr:last-child th,
.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

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

/* 相关链接 */
.related-links-section {
  margin-bottom: var(--space-xl);
}

.related-links p {
  font-size: 14px;
  color: var(--color-muted);
}

.related-links a {
  display: inline-block;
  margin-right: var(--space-lg);
  font-weight: 500;
}

/* ============================================================
   6. Pages — 专题精选页
   ============================================================ */

.featured-collection {
  margin-bottom: var(--space-xl);
}

.featured-collection .section-heading {
  margin-bottom: var(--space-lg);
}

.featured-card {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 0;
  overflow: hidden;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.featured-card .collection-media {
  min-height: 240px;
}

.featured-card .collection-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.featured-card .collection-content {
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.featured-card .collection-content h3 {
  font-size: 24px;
  font-weight: 600;
}

.featured-card .collection-summary {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
}

.featured-card .collection-points {
  margin: var(--space-sm) 0;
  padding-left: 0;
}

.featured-card .collection-points li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: var(--space-xs);
}

.featured-card .collection-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--color-accent);
}

.featured-card .collection-note {
  font-size: 13px;
  color: var(--color-muted-light);
  margin-top: auto;
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-sm);
}

/* 专题网格 */
.collection-grid-section {
  margin-bottom: var(--space-xl);
}

.collection-grid-section .collection-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.collection-grid-section .collection-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  overflow: hidden;
  padding: 0;
}

.collection-grid-section .collection-media {
  min-height: 180px;
}

.collection-grid-section .collection-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.collection-grid-section .collection-content {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.collection-grid-section .collection-content h3 {
  font-size: 18px;
  font-weight: 600;
}

.collection-grid-section .collection-summary {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
}

.collection-grid-section .collection-points {
  margin: var(--space-xs) 0;
  padding-left: 0;
}

.collection-grid-section .collection-points li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.5;
  margin-bottom: var(--space-xs);
}

.collection-grid-section .collection-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 1px;
  background: var(--color-accent);
}

/* 专题详情说明 */
.collection-detail-note {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.detail-note-content p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: var(--space-sm);
}

.detail-note-content p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   7. Pages — 观影指南页
   ============================================================ */

.guide-layout {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.guide-summary {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.guide-summary .section-title {
  margin-bottom: var(--space-md);
}

.guide-summary > p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
  max-width: 720px;
}

.guide-figure {
  margin-top: var(--space-lg);
}

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

.step-details {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.step-details .section-title {
  margin-bottom: var(--space-sm);
}

.step-details .section-intro {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: var(--space-lg);
}

.step-details .steps-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  counter-reset: none;
}

.step-details .step-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  display: flex;
  gap: var(--space-md);
  counter-increment: none;
}

.step-details .step-card::before {
  display: none;
}

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

.step-details .step-content h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.step-details .step-content p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.65;
  margin-bottom: var(--space-sm);
}

.step-details .step-content .step-note {
  font-size: 13px;
  color: var(--color-muted-light);
  background: var(--color-white);
  border-left: 3px solid var(--color-accent);
  padding: var(--space-sm) var(--space-md);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 0;
}

/* 相关FAQ */
.related-faq {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.related-faq .section-title {
  margin-bottom: var(--space-sm);
}

.related-faq .section-intro {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: var(--space-md);
}

.related-faq .section-intro a {
  font-weight: 500;
}

.faq-mini-list {
  margin-bottom: var(--space-md);
}

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

.faq-mini-list .faq-item p {
  padding: 0 var(--space-md) var(--space-md);
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.65;
}

.faq-mini-list .faq-item p a {
  display: inline-block;
  margin-top: var(--space-xs);
  font-weight: 500;
}

.related-links-note {
  font-size: 14px;
  color: var(--color-muted);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-divider);
}

.related-links-note a {
  display: inline-block;
  margin-right: var(--space-lg);
  font-weight: 500;
}

/* ============================================================
   8. Pages — 热播看点页
   ============================================================ */

.trend-summary {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.trend-summary .section-title {
  margin-bottom: var(--space-md);
}

.trend-summary > p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
  max-width: 720px;
  margin-bottom: 0;
}

.trend-cards {
  margin-bottom: var(--space-xl);
}

.trend-cards .section-title {
  margin-bottom: var(--space-lg);
}

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

.trend-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.trend-card-media {
  overflow: hidden;
}

.trend-card-media figure {
  margin: 0;
}

.trend-card-media img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.trend-card:hover .trend-card-media img {
  transform: scale(1.03);
}

.trend-card-body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  flex: 1;
}

.trend-card-body .trend-card-title {
  font-size: 17px;
  font-weight: 600;
}

.trend-card-body .trend-card-observation {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.65;
}

.trend-card-body .trend-card-guide {
  margin-top: auto;
}

.trend-card-body .trend-card-guide a {
  font-size: 14px;
  font-weight: 500;
}

/* 频道动态时间线 */
.channel-timeline {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.channel-timeline .section-title {
  margin-bottom: var(--space-sm);
}

.channel-timeline .timeline-intro {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: var(--space-lg);
}

.timeline-list {
  position: relative;
  padding-left: 24px;
}

.timeline-list::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-lg);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -21px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-accent);
  z-index: 1;
}

.timeline-date {
  font-size: 13px;
  color: var(--color-muted-light);
  font-family: var(--font-mono);
  display: block;
  margin-bottom: var(--space-xs);
}

.timeline-content h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.timeline-content p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.65;
  margin-bottom: 0;
}

/* 延伸方向 */
.related-direction {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.related-direction .section-title {
  margin-bottom: var(--space-sm);
}

.related-direction > p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: var(--space-md);
}

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

.related-links li {
  margin: 0;
}

.related-links a {
  display: inline-block;
  padding: 6px 16px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--color-text);
}

.related-links a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  text-decoration: none;
}

/* ============================================================
   9. Pages — 版权说明页
   ============================================================ */

.copyright-summary {
  margin-bottom: var(--space-xl);
}

.copyright-summary .section-title {
  margin-bottom: var(--space-md);
}

.content-media-inline {
  margin-bottom: var(--space-md);
}

.content-media-inline img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.summary-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.summary-card p {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

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

.clause-list {
  margin-bottom: var(--space-xl);
}

.clause-list .section-title {
  margin-bottom: var(--space-lg);
}

.clause-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-sm);
}

.clause-item:last-child {
  margin-bottom: 0;
}

.clause-item h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

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

.related-help {
  margin-bottom: var(--space-xl);
}

.related-help .section-title {
  margin-bottom: var(--space-lg);
}

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

.help-link-card {
  display: block;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.help-link-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-card-hover);
  text-decoration: none;
}

.help-link-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.help-link-card p {
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 0;
}

/* ============================================================
   10. Pages — 常见问题页
   ============================================================ */

.container {
  max-width: 100%;
}

.faq-note {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

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

.faq-note .content-media-inline {
  margin-bottom: 0;
}

.faq-note .content-media-inline img {
  height: 140px;
}

.faq-category {
  margin-bottom: var(--space-xl);
}

.faq-category-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-accent);
  margin-bottom: var(--space-md);
}

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

.support-links {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.support-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.support-links > p {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: var(--space-lg);
}

.support-link-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.support-link {
  display: block;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.support-link:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
  text-decoration: none;
}

.support-link-title {
  display: block;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.support-link-desc {
  display: block;
  font-size: 13px;
  color: var(--color-muted);
}

/* ============================================================
   11. Pages — 404 页
   ============================================================ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3xl) var(--space-lg);
}

.error-panel {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3xl);
  text-align: center;
  max-width: 480px;
  width: 100%;
}

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

.error-panel h1 {
  font-size: 24px;
  margin-bottom: var(--space-md);
}

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

.error-btn {
  display: inline-block;
  padding: 10px 24px;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  transition: background-color 0.2s ease;
}

.error-btn:hover {
  background: var(--color-accent-dark);
  color: #fff;
  text-decoration: none;
}

/* ============================================================
   12. Responsive — 响应式断点
   ============================================================ */

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

  .channel-card-featured {
    grid-column: span 2;
  }

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

  .collection-card-large {
    grid-column: span 2;
  }

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

  .channel-grid-section .channel-card-featured {
    grid-column: span 2;
  }

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

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

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

  .step-details .steps-list {
    grid-template-columns: 1fr;
  }
}

/* 手机端 */
@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding-top: var(--space-sm);
    padding-bottom: var(--space-sm);
    gap: var(--space-sm);
  }

  .brand {
    flex: 1;
  }

  .slogan {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    width: 100%;
    order: 3;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    padding: var(--space-sm) 0;
    gap: 2px;
  }

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

  .nav-list li {
    width: 100%;
  }

  .nav-list a {
    padding: 12px 16px;
    font-size: 16px;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

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

  .nav-list a.is-current {
    border-left: 3px solid var(--color-accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  }

  .home-main,
  .site-main.inner-main {
    padding: var(--space-md) var(--space-md) var(--space-2xl);
  }

  .page-header {
    padding: var(--space-sm) 0 var(--space-lg);
    margin-bottom: var(--space-lg);
  }

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

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

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

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

  /* 首页网格单列 */
  .channel-grid {
    grid-template-columns: 1fr;
  }

  .channel-card-featured {
    grid-column: span 1;
    grid-row: auto;
  }

  .channel-card-featured img.channel-img-featured {
    height: 160px;
  }

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

  .collection-card-large {
    grid-column: span 1;
    grid-row: auto;
  }

  .collection-card-large img.collection-img {
    height: 140px;
  }

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

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

  .entry-links {
    grid-template-columns: 1fr;
  }

  /* 频道分类页 */
  .channel-grid-section .channel-grid {
    grid-template-columns: 1fr;
  }

  .channel-grid-section .channel-card-featured {
    grid-column: span 1;
    grid-row: auto;
  }

  .channel-card-featured .channel-card-media img {
    height: 180px;
  }

  .comparison-table {
    min-width: 520px;
  }

  /* 专题精选页 */
  .featured-card {
    grid-template-columns: 1fr;
  }

  .featured-card .collection-media {
    min-height: 160px;
    max-height: 200px;
    overflow: hidden;
  }

  .featured-card .collection-content {
    padding: var(--space-lg);
  }

  .collection-grid-section .collection-grid {
    grid-template-columns: 1fr;
  }

  .collection-grid-section .collection-card {
    grid-template-columns: 1fr;
  }

  .collection-grid-section .collection-media {
    min-height: 140px;
    max-height: 180px;
    overflow: hidden;
  }

  /* 观影指南页 */
  .guide-layout {
    gap: var(--space-lg);
  }

  .guide-summary,
  .step-details,
  .related-faq {
    padding: var(--space-lg);
  }

  .step-details .steps-list {
    grid-template-columns: 1fr;
  }

  .step-details .step-card {
    flex-direction: column;
    gap: var(--space-sm);
  }

  /* 热播看点页 */
  .trend-grid {
    grid-template-columns: 1fr;
  }

  .trend-summary,
  .channel-timeline,
  .related-direction {
    padding: var(--space-lg);
  }

  .timeline-list {
    padding-left: 20px;
  }

  .timeline-item::before {
    left: -17px;
  }

  /* 版权说明页 */
  .summary-card {
    padding: var(--space-lg);
  }

  .clause-item {
    padding: var(--space-md);
  }

  .help-links-grid {
    grid-template-columns: 1fr;
  }

  /* FAQ页 */
  .faq-note {
    padding: var(--space-lg);
  }

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

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

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

/* 小屏手机 */
@media (max-width: 390px) {
  .brand-name {
    font-size: 20px;
  }

  .nav-toggle {
    width: 40px;
    height: 40px;
  }

  .channel-card,
  .collection-card {
    padding: var(--space-md);
  }

  .channel-card .channel-name {
    font-size: 18px;
  }

  .collection-card .collection-name {
    font-size: 17px;
  }

  .trend-item {
    padding: var(--space-md);
  }

  .guide-steps {
    padding: var(--space-lg);
  }

  .featured-card .collection-content {
    padding: var(--space-md);
  }

  .collection-grid-section .collection-content {
    padding: var(--space-md);
  }

  .help-link-card,
  .support-link {
    padding: var(--space-md);
  }
}

/* 程序验收反馈：修复网格孤项 */
@media (min-width: 769px) {
  .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}