/* ============================================================
   BASE — 全局基础样式
   ============================================================ */
*,
*::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: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #2d2d2d;
  background-color: #f7f7f5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: #4a6a5a;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #b8860b;
}

ul,
ol {
  list-style: none;
}

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

/* ============================================================
   LAYOUT — 全站布局骨架
   ============================================================ */

.site-header {
  background-color: #ffffff;
  border-bottom: 1px solid #e5e0d8;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

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

.brand-name {
  font-size: 20px;
  font-weight: 700;
  color: #2d2d2d;
  letter-spacing: 0.02em;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid #e5e0d8;
  border-radius: 6px;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: #2d2d2d;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

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

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

.site-nav {
  display: block;
}

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

.nav-list a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 15px;
  color: #2d2d2d;
  border-radius: 4px;
  white-space: nowrap;
}

.nav-list a:hover {
  background-color: #f7f7f5;
  color: #b8860b;
}

.nav-list a.is-current {
  color: #b8860b;
  background-color: rgba(184, 134, 11, 0.08);
  font-weight: 600;
}

.layout-shell {
  flex: 1;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 0;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
}

.page-layout {
  flex: 1;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 0;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
}

.sidebar-left {
  grid-template-columns: 240px minmax(0, 1fr);
}

.site-main {
  min-width: 0;
  padding: 32px 0 48px;
}

.home-main {
  padding-top: 40px;
}

.inner-main {
  padding-top: 28px;
  max-width: 860px;
}

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

/* ============================================================
   SIDEBAR — 侧栏目录
   ============================================================ */

.sidebar,
.site-sidebar {
  padding: 32px 24px 48px 0;
  border-right: 1px solid #e5e0d8;
  margin-right: 32px;
  min-width: 0;
}

.sidebar-inner,
.sidebar-nav {
  position: sticky;
  top: 88px;
}

.sidebar-title {
  font-size: 14px;
  font-weight: 700;
  color: #8a8578;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid #e5e0d8;
}

.sidebar-tree,
.sidebar-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-tree a,
.sidebar-list a {
  display: block;
  padding: 8px 12px;
  font-size: 15px;
  color: #2d2d2d;
  border-radius: 4px;
  border-left: 2px solid transparent;
}

.sidebar-tree a:hover,
.sidebar-list a:hover {
  background-color: #f0ede8;
  color: #b8860b;
  border-left-color: #b8860b;
}

.sidebar-tree a.is-current,
.sidebar-list a.is-current {
  background-color: rgba(184, 134, 11, 0.08);
  color: #b8860b;
  border-left-color: #b8860b;
  font-weight: 600;
}

.sidebar-sub {
  margin-top: 4px;
  margin-bottom: 8px;
  padding-left: 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-sub a {
  font-size: 14px;
  padding: 6px 12px;
}

.sidebar-sublist {
  margin-top: 4px;
  margin-bottom: 8px;
  padding-left: 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-sublist a {
  font-size: 14px;
  padding: 6px 12px;
}

/* ============================================================
   COMPONENTS — 通用组件
   ============================================================ */

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: #8a8578;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid #e5e0d8;
}

.breadcrumb a {
  color: #4a6a5a;
}

.breadcrumb a:hover {
  color: #b8860b;
}

.breadcrumb-sep {
  color: #c0bbb0;
}

.breadcrumb-current {
  color: #2d2d2d;
  font-weight: 500;
}

/* 页面标题区 */
.page-header {
  margin-bottom: 40px;
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.3;
  color: #2d2d2d;
  margin-bottom: 12px;
}

.page-description {
  font-size: 16px;
  color: #6b675e;
  max-width: 72ch;
}

/* 内容区块 */
.content-section {
  margin-bottom: 48px;
}

.content-section h2,
.section-title {
  font-size: 22px;
  font-weight: 700;
  color: #2d2d2d;
  margin-bottom: 16px;
  line-height: 1.4;
}

.content-section h3 {
  font-size: 18px;
  font-weight: 600;
  color: #2d2d2d;
  margin-bottom: 8px;
}

.section-intro {
  color: #6b675e;
  margin-bottom: 20px;
  max-width: 72ch;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background-color: #b8860b;
  color: #ffffff;
  border: 1px solid #b8860b;
}

.btn-primary:hover {
  background-color: #a0750a;
  color: #ffffff;
  border-color: #a0750a;
}

.btn-secondary {
  background-color: transparent;
  color: #4a6a5a;
  border: 1px solid #4a6a5a;
}

.btn-secondary:hover {
  background-color: #4a6a5a;
  color: #ffffff;
  border-color: #4a6a5a;
}

/* 折叠问答 */
.faq-item {
  border-bottom: 1px solid #e5e0d8;
}

.faq-item summary {
  cursor: pointer;
  padding: 16px 0;
  font-size: 16px;
  font-weight: 600;
  color: #2d2d2d;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: color 0.2s ease;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 400;
  color: #b8860b;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

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

.faq-item summary:hover {
  color: #b8860b;
}

.faq-item p {
  padding: 0 0 16px;
  color: #6b675e;
  max-width: 70ch;
}

.faq-item p a {
  color: #4a6a5a;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.faq-item p a:hover {
  color: #b8860b;
}

/* 链接卡片 */
.related-card {
  display: block;
  padding: 20px;
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 8px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.related-card:hover {
  border-color: #b8860b;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.related-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: #2d2d2d;
  margin-bottom: 6px;
}

.related-card p {
  font-size: 14px;
  color: #6b675e;
  line-height: 1.6;
}

/* 相关链接条 */
.related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid #e5e0d8;
}

.related-links-label {
  font-size: 14px;
  font-weight: 600;
  color: #8a8578;
}

.related-links-item {
  display: inline-block;
  padding: 6px 16px;
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 4px;
  font-size: 14px;
  color: #4a6a5a;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.related-links-item:hover {
  border-color: #b8860b;
  color: #b8860b;
}

/* 更多链接 */
.link-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: #4a6a5a;
  margin-top: 16px;
}

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

.link-more:hover {
  color: #b8860b;
}

.link-more:hover::after {
  transform: translateX(4px);
}

/* 图片容器 */
figure {
  margin: 0;
}

figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 6px;
}

figcaption {
  font-size: 13px;
  color: #8a8578;
  margin-top: 8px;
  line-height: 1.5;
}

/* ============================================================
   PAGES — 首页
   ============================================================ */

/* 首屏焦点区 */
.hero-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 64px;
}

.hero-content {
  padding-right: 8px;
}

#hero-heading {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: #2d2d2d;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 17px;
  color: #6b675e;
  margin-bottom: 28px;
  max-width: 40ch;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

.hero-media {
  width: 100%;
}

.hero-media img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  border-radius: 8px;
}

.hero-notice {
  grid-column: 1 / -1;
  background-color: #f0ede8;
  border-left: 4px solid #b8860b;
  padding: 14px 20px;
  border-radius: 0 6px 6px 0;
}

.hero-notice p {
  font-size: 15px;
  color: #6b675e;
}

.hero-notice strong {
  color: #2d2d2d;
  font-weight: 600;
}

/* 频道分类速览 */
.channels-preview {
  margin-bottom: 64px;
}

.channels-preview h2 {
  font-size: 22px;
  font-weight: 700;
  color: #2d2d2d;
  margin-bottom: 8px;
}

.channel-group-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 24px 0 32px;
}

.channel-group {
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 8px;
  padding: 20px 24px;
}

.channel-group h3 {
  font-size: 16px;
  font-weight: 600;
  color: #2d2d2d;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid #e5e0d8;
}

.channel-group ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.channel-group li {
  font-size: 15px;
  color: #6b675e;
  padding: 4px 0;
}

.channel-group li a {
  font-weight: 500;
}

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

.channel-card {
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 8px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.channel-card:hover {
  border-color: #b8860b;
}

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

.channel-card figcaption {
  padding: 16px 20px;
  font-size: 15px;
  color: #6b675e;
  margin: 0;
}

.channel-card figcaption a {
  display: inline-block;
  margin-top: 8px;
  font-weight: 600;
  font-size: 14px;
}

/* 专题片单预览 */
.feature-preview {
  margin-bottom: 64px;
}

.feature-preview h2 {
  font-size: 22px;
  font-weight: 700;
  color: #2d2d2d;
  margin-bottom: 8px;
}

.feature-card-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

.feature-card {
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 8px;
  padding: 24px;
  transition: border-color 0.2s ease;
}

.feature-card:hover {
  border-color: #b8860b;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: #2d2d2d;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 15px;
  color: #6b675e;
  margin-bottom: 8px;
}

.feature-card a {
  display: inline-block;
  margin-top: 8px;
  font-weight: 600;
  font-size: 14px;
}

.feature-preview-media img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
}

/* 观看指南摘要 */
.guide-summary {
  margin-bottom: 64px;
}

.guide-summary h2 {
  font-size: 22px;
  font-weight: 700;
  color: #2d2d2d;
  margin-bottom: 8px;
}

.guide-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 24px 0 16px;
}

.step-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: #b8860b;
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
}

.step-text h3 {
  font-size: 16px;
  font-weight: 600;
  color: #2d2d2d;
  margin-bottom: 4px;
}

.step-text p {
  font-size: 14px;
  color: #6b675e;
}

/* 更新动态摘要 */
.updates-preview {
  margin-bottom: 64px;
}

.updates-preview h2 {
  font-size: 22px;
  font-weight: 700;
  color: #2d2d2d;
  margin-bottom: 8px;
}

.mini-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin: 24px 0 16px;
}

.mini-timeline .timeline-item {
  display: flex;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid #e5e0d8;
}

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

.timeline-date {
  font-size: 14px;
  color: #8a8578;
  flex-shrink: 0;
  min-width: 80px;
  padding-top: 2px;
}

.timeline-text {
  font-size: 15px;
  color: #2d2d2d;
}

/* 常见问题摘选 */
.faq-preview {
  margin-bottom: 64px;
}

.faq-preview h2 {
  font-size: 22px;
  font-weight: 700;
  color: #2d2d2d;
  margin-bottom: 16px;
}

.faq-mini-list {
  border-top: 1px solid #e5e0d8;
}

/* 内容边界声明 */
.boundary-notice {
  background-color: #f0ede8;
  border: 1px solid #e5e0d8;
  border-radius: 8px;
  padding: 24px;
  margin-bottom: 48px;
}

.boundary-notice h2 {
  font-size: 16px;
  font-weight: 600;
  color: #2d2d2d;
  margin-bottom: 8px;
}

.boundary-notice p {
  font-size: 15px;
  color: #6b675e;
}

/* ============================================================
   PAGES — 频道地图
   ============================================================ */

.page-channels .content-section h2 {
  font-size: 20px;
}

.dimension-actions {
  display: flex;
  gap: 16px;
  margin-top: 20px;
}

.dimension-btn {
  display: inline-block;
  padding: 10px 24px;
  background-color: #ffffff;
  border: 1px solid #4a6a5a;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  color: #4a6a5a;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.dimension-btn:hover {
  background-color: #4a6a5a;
  color: #ffffff;
}

.channel-tree {
  margin: 16px 0 24px;
}

.tree-group {
  margin-bottom: 16px;
}

.tree-group > strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: #2d2d2d;
  margin-bottom: 8px;
  padding-bottom: 4px;
  border-bottom: 1px solid #e5e0d8;
}

.tree-group ul {
  padding-left: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tree-group li a {
  font-size: 14px;
  color: #4a6a5a;
}

.tree-group li a:hover {
  color: #b8860b;
}

.channel-item {
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid #e5e0d8;
}

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

.channel-media img {
  width: 200px;
  height: 140px;
  object-fit: cover;
  border-radius: 6px;
}

.channel-info h3 {
  font-size: 17px;
  font-weight: 600;
  color: #2d2d2d;
  margin-bottom: 6px;
}

.channel-position {
  font-size: 15px;
  color: #6b675e;
  margin-bottom: 8px;
}

.channel-scope {
  font-size: 14px;
  color: #6b675e;
  margin-bottom: 8px;
}

.channel-related a {
  font-size: 14px;
  font-weight: 600;
}

.help-block {
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 8px;
  padding: 24px;
}

.help-block h2 {
  font-size: 18px;
}

.help-block p {
  color: #6b675e;
  margin-bottom: 12px;
}

.help-links {
  display: flex;
  gap: 16px;
}

.help-links a {
  font-weight: 600;
  font-size: 15px;
}

/* ============================================================
   PAGES — 专题解读
   ============================================================ */

.feature-article {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.feature-section h2 {
  font-size: 20px;
}

.feature-section p {
  color: #6b675e;
  margin-bottom: 12px;
  max-width: 70ch;
}

.feature-section p strong {
  color: #2d2d2d;
  font-weight: 600;
}

.feature-figure {
  margin: 16px 0;
}

.feature-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 8px;
}

.core-block {
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 8px;
  padding: 24px;
  margin-top: 16px;
}

.core-block h3 {
  font-size: 17px;
  font-weight: 600;
  color: #2d2d2d;
  margin-bottom: 8px;
}

.core-block p {
  font-size: 15px;
}

.process-list {
  counter-reset: process;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.process-list li {
  counter-increment: process;
  padding: 12px 16px 12px 48px;
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 6px;
  position: relative;
  font-size: 15px;
  color: #6b675e;
}

.process-list li::before {
  content: counter(process);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: #b8860b;
  color: #ffffff;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.related-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 16px;
}

.related-link-card {
  display: block;
  padding: 16px;
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 6px;
  transition: border-color 0.2s ease;
}

.related-link-card:hover {
  border-color: #b8860b;
}

.related-link-title {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: #2d2d2d;
  margin-bottom: 4px;
}

.related-link-desc {
  display: block;
  font-size: 13px;
  color: #8a8578;
}

.back-home-link {
  display: block;
  text-align: center;
  padding: 16px;
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  color: #4a6a5a;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.back-home-link:hover {
  border-color: #b8860b;
  color: #b8860b;
}

/* ============================================================
   PAGES — 观看指南
   ============================================================ */

.page-guide .content-section h2 {
  font-size: 20px;
}

.checklist {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.checklist li {
  padding: 12px 16px;
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 6px;
  font-size: 15px;
  color: #6b675e;
}

.checklist li strong {
  color: #2d2d2d;
  font-weight: 600;
  margin-right: 6px;
}

.verify-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 20px 0;
}

.verify-step {
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 8px;
  padding: 20px;
}

.verify-step h3 {
  font-size: 16px;
  font-weight: 600;
  color: #2d2d2d;
  margin-bottom: 8px;
}

.verify-step p {
  font-size: 14px;
  color: #6b675e;
  margin-bottom: 8px;
}

.status-tip {
  font-size: 13px;
  padding: 8px 12px;
  background-color: #f7f7f5;
  border-radius: 4px;
}

.status-tip strong {
  color: #b8860b;
  font-weight: 600;
}

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

.guide-figure img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
}

.trouble-table {
  margin-top: 16px;
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 8px;
  overflow: hidden;
}

.trouble-table th {
  background-color: #f0ede8;
  font-size: 14px;
  font-weight: 600;
  color: #2d2d2d;
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid #e5e0d8;
}

.trouble-table td {
  padding: 12px 16px;
  font-size: 14px;
  color: #6b675e;
  border-bottom: 1px solid #e5e0d8;
}

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

.stepper-widget {
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 8px;
  padding: 24px;
  margin-top: 16px;
}

.stepper-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.stepper-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 8px 20px;
  background-color: #f7f7f5;
  border: 1px solid #e5e0d8;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  color: #2d2d2d;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.stepper-btn:hover:not(:disabled) {
  background-color: #b8860b;
  color: #ffffff;
  border-color: #b8860b;
}

.stepper-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.stepper-indicator {
  font-size: 15px;
  font-weight: 600;
  color: #2d2d2d;
}

.stepper-panel {
  padding: 16px;
  background-color: #f7f7f5;
  border-radius: 6px;
  font-size: 15px;
  color: #6b675e;
}

.stepper-panel strong {
  color: #2d2d2d;
  font-weight: 600;
}

.page-guide .related-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-guide .related-links li a {
  display: inline-block;
  padding: 8px 0;
  font-size: 15px;
  font-weight: 600;
  color: #4a6a5a;
  border-bottom: 1px solid #e5e0d8;
}

.page-guide .related-links li a:hover {
  color: #b8860b;
  border-bottom-color: #b8860b;
}

/* ============================================================
   PAGES — 更新动态
   ============================================================ */

.latest-release {
  margin-bottom: 48px;
}

.release-card {
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 8px;
  padding: 24px;
}

.release-card.highlight {
  border-left: 4px solid #b8860b;
}

.release-version {
  font-size: 20px;
  font-weight: 700;
  color: #2d2d2d;
  margin-bottom: 4px;
}

.release-date {
  font-size: 14px;
  color: #8a8578;
  margin-bottom: 12px;
}

.release-summary {
  font-size: 15px;
  color: #6b675e;
}

.timeline {
  position: relative;
  padding-left: 32px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background-color: #e5e0d8;
}

.timeline-item {
  position: relative;
  padding-bottom: 32px;
}

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

.timeline-marker {
  position: absolute;
  left: -32px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: #ffffff;
  border: 3px solid #b8860b;
}

.timeline-content {
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 8px;
  padding: 20px 24px;
}

.timeline-version {
  font-size: 17px;
  font-weight: 700;
  color: #2d2d2d;
  margin-bottom: 4px;
}

.timeline-date {
  font-size: 14px;
  color: #8a8578;
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 15px;
  color: #6b675e;
  margin-bottom: 4px;
}

.update-help {
  margin: 48px 0 32px;
}

.update-help p {
  color: #6b675e;
  margin-bottom: 12px;
}

.update-help a {
  font-weight: 600;
  margin-right: 16px;
}

.release-figure {
  margin: 32px 0;
}

.release-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 8px;
}

.page-updates .related-links {
  margin-top: 0;
}

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

.related-list li a {
  display: inline-block;
  padding: 8px 0;
  font-size: 15px;
  font-weight: 600;
  color: #4a6a5a;
  border-bottom: 1px solid #e5e0d8;
}

.related-list li a:hover {
  color: #b8860b;
  border-bottom-color: #b8860b;
}

/* ============================================================
   PAGES — 内容说明
   ============================================================ */

.page-content .section-intro {
  margin-bottom: 16px;
}

.term-figure {
  margin-bottom: 24px;
}

.term-figure img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
}

.term-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.term-item {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid #e5e0d8;
}

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

.term-item dt {
  font-size: 15px;
  font-weight: 700;
  color: #b8860b;
  padding-top: 2px;
}

.term-item dd {
  font-size: 15px;
  color: #6b675e;
}

.rule-list {
  counter-reset: rule;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 20px 0;
}

.rule-list li {
  counter-increment: rule;
  padding: 16px 20px 16px 56px;
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 6px;
  position: relative;
}

.rule-list li::before {
  content: counter(rule);
  position: absolute;
  left: 20px;
  top: 20px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: #b8860b;
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rule-list h3 {
  font-size: 16px;
  font-weight: 600;
  color: #2d2d2d;
  margin-bottom: 4px;
}

.rule-list p {
  font-size: 14px;
  color: #6b675e;
}

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

.rule-figure img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
}

.boundary-section {
  margin-top: 48px;
}

.boundary-box {
  background-color: #f0ede8;
  border: 1px solid #e5e0d8;
  border-radius: 8px;
  padding: 24px;
  margin: 20px 0;
}

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

.boundary-list li {
  font-size: 15px;
  color: #6b675e;
  padding-left: 20px;
  position: relative;
}

.boundary-list li::before {
  content: "·";
  position: absolute;
  left: 6px;
  color: #b8860b;
  font-weight: 700;
  font-size: 20px;
  line-height: 1;
}

.boundary-note {
  font-size: 14px;
  color: #8a8578;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 20px;
}

/* ============================================================
   PAGES — 常见问题
   ============================================================ */

.page-header-figure {
  margin-top: 20px;
}

.page-header-figure img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 8px;
}

.faq-category-nav {
  margin-bottom: 40px;
}

.category-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.category-link {
  display: inline-block;
  padding: 8px 20px;
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  color: #4a6a5a;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.category-link:hover {
  border-color: #b8860b;
  color: #b8860b;
}

.faq-group-title {
  font-size: 18px;
  font-weight: 700;
  color: #2d2d2d;
  margin: 32px 0 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid #e5e0d8;
}

.faq-list .faq-item summary {
  font-size: 15px;
}

.faq-related {
  margin-top: 48px;
}

.related-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 16px;
}

.content-boundary-note {
  margin-top: 40px;
  padding: 16px 20px;
  background-color: #f0ede8;
  border-radius: 6px;
  font-size: 14px;
  color: #6b675e;
}

/* ============================================================
   PAGES — 404
   ============================================================ */

.error-panel {
  text-align: center;
  max-width: 480px;
  padding: 40px;
  background-color: #ffffff;
  border: 1px solid #e5e0d8;
  border-radius: 8px;
}

.error-code {
  font-size: 64px;
  font-weight: 700;
  color: #b8860b;
  line-height: 1;
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 24px;
  font-weight: 700;
  color: #2d2d2d;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: #6b675e;
  margin-bottom: 24px;
}

.error-btn {
  display: inline-block;
  padding: 10px 28px;
  background-color: #b8860b;
  color: #ffffff;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  transition: background-color 0.2s ease;
}

.error-btn:hover {
  background-color: #a0750a;
  color: #ffffff;
}

/* ============================================================
   FOOTER — 页脚
   ============================================================ */

.site-footer {
  background-color: #ffffff;
  border-top: 1px solid #e5e0d8;
  margin-top: auto;
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 40px 24px 24px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: start;
}

.footer-brand {
  font-size: 18px;
  font-weight: 700;
  color: #2d2d2d;
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 14px;
  color: #8a8578;
  max-width: 40ch;
}

.footer-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.footer-nav a {
  font-size: 14px;
  color: #6b675e;
}

.footer-nav a:hover {
  color: #b8860b;
}

.footer-bottom {
  border-top: 1px solid #e5e0d8;
  padding: 16px 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: #8a8578;
}

/* ============================================================
   RESPONSIVE — 响应式
   ============================================================ */

@media (max-width: 1024px) {
  .layout-shell,
  .page-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 0;
  }

  .sidebar,
  .site-sidebar {
    margin-right: 24px;
    padding-right: 16px;
  }

  .channel-card-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

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

  .related-cards {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
    height: 56px;
  }

  .nav-toggle {
    display: flex;
    order: 3;
  }

  .site-nav {
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background-color: #ffffff;
    border-bottom: 1px solid #e5e0d8;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  }

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

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

  .nav-list a {
    display: block;
    padding: 12px 16px;
    font-size: 15px;
  }

  .layout-shell,
  .page-layout {
    display: block;
    padding: 0 16px;
  }

  .sidebar,
  .site-sidebar {
    display: none;
  }

  .site-main {
    padding: 24px 0 40px;
  }

  .home-main {
    padding-top: 24px;
  }

  .inner-main {
    max-width: 100%;
  }

  /* 首页模块 */
  .hero-section {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 48px;
  }

  .hero-content {
    padding-right: 0;
  }

  #hero-heading {
    font-size: 26px;
  }

  .hero-actions {
    flex-direction: column;
    gap: 12px;
  }

  .btn {
    width: 100%;
  }

  .hero-notice {
    grid-column: 1;
  }

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

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

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

  .guide-steps {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* 频道地图 */
  .dimension-actions {
    flex-direction: column;
    gap: 12px;
  }

  .dimension-btn {
    width: 100%;
    text-align: center;
  }

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

  .channel-media img {
    width: 100%;
    height: 180px;
  }

  /* 专题解读 */
  .process-list li {
    padding-left: 48px;
  }

  /* 观看指南 */
  .checklist li {
    padding: 12px;
  }

  .trouble-table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .stepper-controls {
    flex-wrap: wrap;
    justify-content: center;
  }

  .stepper-indicator {
    order: -1;
    width: 100%;
    text-align: center;
  }

  /* 更新动态 */
  .timeline {
    padding-left: 28px;
  }

  .timeline-marker {
    left: -28px;
    width: 14px;
    height: 14px;
  }

  .timeline-content {
    padding: 16px;
  }

  /* 内容说明 */
  .term-item {
    grid-template-columns: 1fr;
    gap: 4px;
  }

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

  /* FAQ */
  .category-links {
    flex-direction: column;
    gap: 8px;
  }

  .category-link {
    width: 100%;
    text-align: center;
  }

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

  .footer-bottom {
    padding: 16px;
  }

  .error-main {
    padding: 40px 16px;
  }

  .error-panel {
    padding: 24px;
  }
}

@media (max-width: 390px) {
  .header-inner {
    padding: 0 12px;
  }

  .brand-name {
    font-size: 17px;
  }

  .layout-shell,
  .page-layout {
    padding: 0 12px;
  }

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

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

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

  .hero-notice {
    padding: 12px 16px;
  }

  .channel-group {
    padding: 16px;
  }

  .feature-card {
    padding: 16px;
  }

  .release-card {
    padding: 16px;
  }

  .boundary-box {
    padding: 16px;
  }

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