/* ==========================================================================
   爱情岛 zssmtk.com · 整站样式表
   视觉方向：餐饮目录风的内容导航站（暖白底 + 珊瑚橙点缀）
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Base —— 变量 / 重置 / 全局基础
   -------------------------------------------------------------------------- */
:root {
  --color-bg: #f7f3ec;
  --color-text: #1f2933;
  --color-text-soft: #5a6572;
  --color-text-light: #7b8794;
  --color-accent: #e8590c;
  --color-accent-soft: #fdf0e6;
  --color-accent-warm: #f4c078;
  --color-card: #ffffff;
  --color-border: #e7e0d5;
  --color-border-soft: #efe9df;
  --color-line: #eae3d8;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Noto Sans CJK SC", "Source Han Sans SC", sans-serif;

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

  --shadow-card: 0 1px 3px rgba(31, 41, 51, 0.06);
  --shadow-hover: 0 6px 18px rgba(31, 41, 51, 0.1);

  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 20px;
  --space-lg: 32px;
  --space-xl: 48px;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: #c7440a;
  text-decoration: underline;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-text);
}

h1 {
  font-size: 30px;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 17px;
}

p {
  margin: 0 0 12px;
}

strong {
  font-weight: 700;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   2. Layout —— 全站骨架（页头 / 页脚 / 主容器 / 内页布局）
   -------------------------------------------------------------------------- */

/* ---- 页头 ---- */
.site-header {
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  z-index: 100;
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-link {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  flex-shrink: 0;
}

.brand-link:hover {
  text-decoration: none;
}

.brand-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.brand-tagline {
  font-size: 12px;
  color: var(--color-text-light);
  letter-spacing: 0.04em;
}

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

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

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--color-text-soft);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-link:hover {
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
  text-decoration: none;
}

.nav-link.is-current {
  color: var(--color-accent);
  font-weight: 700;
  background-color: var(--color-accent-soft);
}

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

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  margin: 0 auto;
}

/* ---- 页脚 ---- */
.site-footer {
  background-color: #2a2f36;
  color: #c3c9d1;
  margin-top: 64px;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px 20px 32px;
}

.footer-brand {
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 4px;
}

.footer-nav {
  margin: 20px 0 20px;
}

.footer-nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
}

.footer-nav-list a {
  color: #aeb6bf;
  font-size: 14px;
}

.footer-nav-list a:hover {
  color: #ffffff;
  text-decoration: none;
}

.footer-boundary {
  font-size: 13px;
  color: #8a929c;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 16px;
  margin-top: 24px;
  line-height: 1.7;
}

.footer-copy {
  font-size: 12px;
  color: #6b737c;
  margin-top: 8px;
}

/* ---- 主容器 ---- */
.site-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ---- 内页布局（右侧栏结构：主内容在前，aside 在后） ---- */
.inner-main {
  padding-top: 24px;
}

.layout-shell,
.page-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 32px;
  align-items: start;
}

.layout-with-aside {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 32px;
  align-items: start;
}

/* 侧栏在前的布局（备用） */
.sidebar-left .page-layout,
.sidebar-left.page-layout,
.sidebar-left .layout-shell,
.sidebar-left.layout-shell {
  grid-template-columns: 280px minmax(0, 1fr);
}

.sidebar-left .page-layout > .main-content,
.sidebar-left .layout-shell > .main-content {
  order: 2;
}

.sidebar-left .page-layout > .sidebar,
.sidebar-left .layout-shell > .sidebar {
  order: 1;
}

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

.sidebar {
  min-width: 0;
}

/* ---- 面包屑 ---- */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 20px;
}

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

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

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

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

/* ---- 页面标题区 ---- */
.page-header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border-soft);
}

.page-title {
  font-size: 30px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 10px;
}

.page-description {
  font-size: 15px;
  color: var(--color-text-soft);
  max-width: 720px;
  line-height: 1.8;
}

/* ---- 通用区块标题 ---- */
.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-intro {
  color: var(--color-text-soft);
  font-size: 14px;
  margin-bottom: 20px;
  line-height: 1.7;
}

/* ---- 内容媒体（内页配图） ---- */
.content-media {
  margin: 0 0 20px;
}

.content-media-inline {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
}

.content-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.content-media figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-text-light);
  background-color: var(--color-card);
  border-top: 1px solid var(--color-border-soft);
}

/* ---- 信息提示框 ---- */
.boundary-notice,
.info-box {
  background-color: var(--color-accent-soft);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin: 24px 0;
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.75;
}

.boundary-notice p,
.info-box p {
  margin-bottom: 4px;
}

.boundary-notice strong,
.info-box strong {
  color: var(--color-text);
}

/* ---- 侧边栏 ---- */
.sidebar-block,
.sidebar-module,
.sidebar-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 2px solid var(--color-accent-soft);
  position: relative;
}

.sidebar-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 32px;
  height: 2px;
  background-color: var(--color-accent);
}

/* 侧边栏列表 */
.toc-list,
.reading-list,
.sidebar-list,
.sidebar-toc,
.archive-nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.toc-item a,
.reading-item a,
.sidebar-list a,
.sidebar-toc a,
.archive-nav-list a {
  display: block;
  padding: 7px 10px;
  font-size: 14px;
  color: var(--color-text-soft);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.toc-item a:hover,
.reading-item a:hover,
.sidebar-list a:hover,
.sidebar-toc a:hover,
.archive-nav-list a:hover {
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
  text-decoration: none;
}

/* 侧边栏主题筛选标签组 */
.filter-tags,
.filter-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  font-size: 13px;
  color: var(--color-text-soft);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-tag:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background-color: var(--color-accent-soft);
  text-decoration: none;
}

.tag-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-border);
}

.tag-dot-active {
  background-color: var(--color-accent);
}

.tag-dot-normal {
  background-color: #7bc47f;
}

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

/* ---- 相关链接（内页底部） ---- */
.related-links {
  margin-top: 32px;
  padding: 20px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
}

.related-links p {
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--color-text-soft);
}

.related-links a {
  margin-right: 16px;
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   3. Components —— 复用组件
   -------------------------------------------------------------------------- */

/* ---- 状态标签 ---- */
.status-tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 20px;
  white-space: nowrap;
}

.status-normal {
  background-color: #e8f5e9;
  color: #2e7d32;
}

.status-active {
  background-color: #e3f2fd;
  color: #1565c0;
}

.status-paused {
  background-color: #fff8e1;
  color: #b26a00;
}

.status-checking {
  background-color: #f3e5f5;
  color: #6a1b9a;
}

.status-limited {
  background-color: #fce4ec;
  color: #c2185b;
}

.status-removed {
  background-color: #f5f5f5;
  color: #757575;
}

/* ---- 步骤列表 ---- */
.steps-list {
  counter-reset: step-counter;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.step-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.step-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

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

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

.step-content h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.step-content p {
  font-size: 14px;
  color: var(--color-text-soft);
  margin-bottom: 0;
  line-height: 1.7;
}

/* ---- 折叠面板（FAQ） ---- */
.faq-category {
  margin-bottom: 28px;
}

.faq-category-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  padding-bottom: 8px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--color-border-soft);
}

.faq-item {
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  background-color: var(--color-card);
  overflow: hidden;
}

.faq-item summary {
  padding: 14px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  transition: background-color 0.2s ease;
}

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

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

.faq-item[open] summary {
  background-color: var(--color-accent-soft);
}

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

.faq-answer {
  padding: 4px 18px 16px;
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.75;
}

.faq-answer p {
  margin-bottom: 8px;
}

/* ---- 视频卡片 ---- */
.video-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

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

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

.video-card-body {
  padding: 14px 16px 16px;
}

.video-card-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
}

.video-card-meta {
  font-size: 13px;
  color: var(--color-text-light);
}

/* ---- 表格 ---- */
.status-table-wrap {
  overflow-x: auto;
  margin: 16px 0 24px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
}

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

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

.status-table th {
  background-color: var(--color-bg);
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
}

.status-table td {
  color: var(--color-text-soft);
  vertical-align: top;
}

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

.table-caption {
  font-size: 13px;
  color: var(--color-text-light);
  padding: 10px 16px;
  border-top: 1px solid var(--color-border-soft);
  background-color: var(--color-bg);
}

/* ---- 首页区块标题 ---- */
.section-heading {
  margin-bottom: 20px;
}

.section-heading h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 6px;
  position: relative;
  padding-left: 14px;
}

.section-heading h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background-color: var(--color-accent);
}

.section-sub {
  font-size: 14px;
  color: var(--color-text-soft);
  margin-bottom: 0;
}

.section-more {
  margin-top: 16px;
  text-align: right;
}

.section-more a {
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

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

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

/* ---- 侧边栏备用样式 ---- */
.sidebar-card h2,
.sidebar-card h3 {
  font-size: 16px;
  font-weight: 700;
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 2px solid var(--color-accent-soft);
  position: relative;
}

.sidebar-card h2::after,
.sidebar-card h3::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 32px;
  height: 2px;
  background-color: var(--color-accent);
}

/* ---- 文本链接 ---- */
.text-link {
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---- 归档导航 ---- */
.archive-nav-list li {
  border-bottom: 1px dashed var(--color-border-soft);
}

.archive-nav-list li:last-child {
  border-bottom: none;
}

/* ---- 归档规则框 ---- */
.rule-box {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
}

.rule-box p {
  font-size: 14px;
  color: var(--color-text-soft);
  margin-bottom: 6px;
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   4. Pages —— 首页
   -------------------------------------------------------------------------- */

/* ---- 首屏操作面（hero） ---- */
.hero-panel {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 32px;
  align-items: stretch;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 28px 0 48px;
}

.hero-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 260px;
}

.hero-media img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  object-fit: cover;
}

.hero-entries {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 10px;
  line-height: 1.3;
}

.hero-desc {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.8;
  margin-bottom: 20px;
}

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

.entry-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.entry-card:hover {
  border-color: var(--color-accent);
  background-color: var(--color-accent-soft);
  text-decoration: none;
  transform: translateX(4px);
}

.entry-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  flex-shrink: 0;
  min-width: 56px;
}

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

.boundary-note {
  font-size: 13px;
  color: var(--color-text-light);
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-top: 4px;
  line-height: 1.6;
}

/* ---- 频道目录密集区 ---- */
.channel-directory {
  margin-bottom: 48px;
}

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

.channel-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.channel-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.channel-item .channel-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
}

.channel-item .channel-desc {
  font-size: 13px;
  color: var(--color-text-soft);
  line-height: 1.6;
  margin-bottom: 0;
  flex: 1;
}

.channel-item .status-tag {
  align-self: flex-start;
}

/* ---- 专题片单模块 ---- */
.topic-shelf {
  margin-bottom: 48px;
}

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

.topic-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

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

.topic-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
}

.topic-info {
  padding: 14px 16px 16px;
}

.topic-info .topic-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
}

.topic-tags {
  font-size: 12px;
  color: var(--color-accent);
  margin-bottom: 6px;
  font-weight: 600;
}

.topic-summary {
  font-size: 13px;
  color: var(--color-text-soft);
  line-height: 1.6;
  margin-bottom: 0;
}

/* ---- 观看指南步骤 ---- */
.guide-steps {
  margin-bottom: 48px;
}

/* ---- 更新记录摘要 ---- */
.updates-preview {
  margin-bottom: 48px;
}

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

.update-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  transition: box-shadow 0.2s ease;
}

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

.update-date {
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
  padding: 2px 10px;
  border-radius: 20px;
  white-space: nowrap;
  margin-top: 2px;
}

.update-summary {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ---- 帮助与反馈入口 ---- */
.help-feedback-entry {
  margin-bottom: 48px;
}

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

.support-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.support-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  text-decoration: none;
}

.support-icon {
  font-size: 28px;
  line-height: 1;
}

.support-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
}

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

/* ---- 首页底部相关链接 ---- */
.home-main .related-links {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.related-links-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  margin-right: 4px;
}

.related-links-item {
  font-size: 13px;
  color: var(--color-text-soft);
  padding: 6px 14px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border-soft);
  border-radius: 20px;
  transition: all 0.2s ease;
}

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

/* --------------------------------------------------------------------------
   5. Pages —— 频道页（aqd/channels.html）
   -------------------------------------------------------------------------- */

.channel-overview-section,
.channel-scene-section {
  margin-bottom: 32px;
}

.channel-overview-section .section-intro,
.channel-scene-section .section-intro {
  font-size: 14px;
  color: var(--color-text-soft);
}

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

.channel-card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  padding: 20px;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

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

.channel-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.channel-card-head .channel-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
}

.channel-card .channel-desc {
  font-size: 13px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 8px;
}

.channel-card .channel-scene {
  font-size: 13px;
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  margin-bottom: 0;
  line-height: 1.6;
}

/* 频道使用场景 */
.scene-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.scene-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: box-shadow 0.2s ease;
}

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

.scene-item-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.scene-item-title::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background-color: var(--color-accent);
  flex-shrink: 0;
}

.scene-item-text {
  font-size: 13px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 0;
}

/* 频道页相关链接 */
.channels-related-links {
  margin-top: 24px;
}

/* --------------------------------------------------------------------------
   6. Pages —— 专题页（aqd/topics.html）
   -------------------------------------------------------------------------- */

.featured-topics {
  margin-bottom: 40px;
}

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

.topic-card .topic-media {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
}

.topic-card .topic-media img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.topic-card-body {
  padding: 16px 18px 18px;
}

.topic-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.topic-tags {
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 8px;
}

.topic-card-summary {
  font-size: 13px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 0;
}

.topic-card-meta {
  font-size: 12px;
  color: var(--color-text-light);
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--color-border-soft);
}

/* 专题归档 */
.topic-archive {
  margin-bottom: 40px;
}

.archive-group {
  margin-bottom: 24px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.archive-month {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.archive-month::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background-color: var(--color-accent);
  flex-shrink: 0;
}

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

.archive-item {
  padding: 10px 0;
  border-bottom: 1px dashed var(--color-border-soft);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

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

.archive-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
}

.archive-link:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.archive-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
  padding: 1px 8px;
  border-radius: 12px;
  margin-right: 6px;
}

.archive-summary {
  font-size: 13px;
  color: var(--color-text-soft);
  line-height: 1.6;
}

.archive-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 2px;
}

/* 专题更新说明 */
.topic-update-note {
  margin-bottom: 32px;
}

.note-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.note-list li {
  font-size: 14px;
  color: var(--color-text-soft);
  padding-left: 20px;
  position: relative;
  line-height: 1.7;
}

.note-list li::before {
  content: "▸";
  position: absolute;
  left: 4px;
  color: var(--color-accent);
  font-weight: 700;
}

/* 专题页侧边栏筛选区 */
.topics-sidebar-filter {
  margin-bottom: 16px;
}

.topics-sidebar-filter .filter-tag {
  margin-bottom: 6px;
}

/* --------------------------------------------------------------------------
   7. Pages —— 指南页（aqd/guide.html）
   -------------------------------------------------------------------------- */

.guide-section {
  margin-bottom: 36px;
}

.guide-section .section-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  flex-shrink: 0;
}

.guide-section .section-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* 观看准备清单 */
.prep-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.prep-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.prep-label {
  flex-shrink: 0;
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
  padding: 2px 10px;
  border-radius: 12px;
  white-space: nowrap;
}

.prep-detail {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 0;
}

/* 指南步骤卡片 */
.step-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 12px;
  transition: box-shadow 0.2s ease;
}

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

.step-card .step-number {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
}

.step-card .step-text {
  flex: 1;
  min-width: 0;
}

.step-card .step-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.step-card .step-content {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.75;
}

.step-card .step-content p {
  margin-bottom: 6px;
}

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

.step-link {
  display: inline-block;
  margin-top: 6px;
  font-size: 13px;
  font-weight: 600;
}

/* 指南页说明文字 */
.section-text {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.75;
}

.section-note {
  font-size: 13px;
  color: var(--color-text-light);
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-top: 14px;
  line-height: 1.6;
}

/* 指南页配图 */
.guide-figure {
  margin: 16px 0 20px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
}

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

.guide-figure figcaption,
.figure-caption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-text-light);
  background-color: var(--color-card);
  border-top: 1px solid var(--color-border-soft);
}

/* 指南页 info-box 特殊样式 */
.info-box .info-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

/* 指南页边界列表 */
.boundary-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
}

.boundary-list li {
  font-size: 14px;
  color: var(--color-text-soft);
  padding-left: 20px;
  position: relative;
  line-height: 1.7;
}

.boundary-list li::before {
  content: "•";
  position: absolute;
  left: 6px;
  color: var(--color-accent);
  font-weight: 700;
}

/* 指南页 tag-group */
.tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-group .filter-tag {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   8. Pages —— 更新记录页（aqd/updates.html）
   -------------------------------------------------------------------------- */

.updates-current {
  margin-bottom: 40px;
}

.current-update-list {
  margin-top: 16px;
}

.current-update-list .update-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-bottom: 10px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  transition: box-shadow 0.2s ease;
}

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

.update-item-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
  flex-wrap: wrap;
}

.update-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-accent);
  background-color: var(--color-accent-soft);
  padding: 1px 8px;
  border-radius: 12px;
}

/* 归档区块 */
.updates-archive {
  margin-bottom: 40px;
}

.archive-month-block {
  margin-bottom: 24px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.archive-month-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.archive-month-title::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background-color: var(--color-accent);
  flex-shrink: 0;
}

.archive-update-list {
  display: flex;
  flex-direction: column;
}

.archive-update-list .update-item {
  padding: 10px 0;
  border-bottom: 1px dashed var(--color-border-soft);
  border-radius: 0;
  background: none;
  box-shadow: none;
}

.archive-update-list .update-item:last-child {
  border-bottom: none;
}

/* 更新记录页相关列表 */
.related-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 16px;
}

.related-list li {
  font-size: 14px;
  color: var(--color-text-soft);
  padding-left: 18px;
  position: relative;
  line-height: 1.7;
}

.related-list li::before {
  content: "▸";
  position: absolute;
  left: 2px;
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   9. Pages —— 帮助页（aqd/help.html）
   -------------------------------------------------------------------------- */

.faq-section {
  margin-bottom: 40px;
}

.verify-section {
  margin-bottom: 36px;
}

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

.verify-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

.verify-step .step-num {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
}

.verify-step .step-body {
  flex: 1;
  min-width: 0;
}

.verify-step .step-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.verify-step .step-body p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 0;
}

/* 反馈链接区 */
.feedback-link-section {
  margin-bottom: 32px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.feedback-link-section p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 8px;
}

.feedback-link-section .text-link {
  font-weight: 700;
}

/* 帮助页 check-list */
.check-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 12px 0;
}

.check-list li {
  font-size: 14px;
  color: var(--color-text-soft);
  padding-left: 24px;
  position: relative;
  line-height: 1.7;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 4px;
  color: var(--color-accent);
  font-weight: 700;
}

/* --------------------------------------------------------------------------
   10. Pages —— 关于页（aqd/about.html）
   -------------------------------------------------------------------------- */

.about-section {
  margin-bottom: 32px;
}

.about-section h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  padding-left: 14px;
  position: relative;
}

.about-section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background-color: var(--color-accent);
}

.about-section p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.8;
  margin-bottom: 12px;
}

.about-section a {
  font-weight: 600;
}

/* 内容范围列表 */
.scope-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 12px 0 16px;
}

.scope-list li {
  font-size: 14px;
  color: var(--color-text-soft);
  padding-left: 22px;
  position: relative;
  line-height: 1.7;
}

.scope-list li::before {
  content: "▸";
  position: absolute;
  left: 4px;
  color: var(--color-accent);
  font-weight: 700;
}

/* 编辑原则列表 */
.principle-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 12px 0 16px;
}

.principle-list li {
  font-size: 14px;
  color: var(--color-text-soft);
  padding-left: 22px;
  position: relative;
  line-height: 1.7;
}

.principle-list li::before {
  content: "•";
  position: absolute;
  left: 6px;
  color: var(--color-accent);
  font-weight: 700;
}

/* 关于页链接 */
.about-links {
  margin-top: 28px;
  padding: 20px;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
}

.about-links p {
  font-size: 14px;
  color: var(--color-text-soft);
  margin-bottom: 10px;
}

.about-links a {
  display: inline-block;
  margin-right: 16px;
  font-weight: 600;
}

/* 关于页侧边栏 */
.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* --------------------------------------------------------------------------
   11. Pages —— 反馈页（aqd/feedback.html）
   -------------------------------------------------------------------------- */

.content-section {
  margin-bottom: 36px;
}

.content-section h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  padding-left: 14px;
  position: relative;
}

.content-section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  border-radius: 2px;
  background-color: var(--color-accent);
}

.content-section p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.8;
  margin-bottom: 12px;
}

/* 反馈流程步骤 */
.process-steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.process-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  transition: box-shadow 0.2s ease;
}

.process-step:hover {
  box-shadow: var(--shadow-hover);
}

.process-step .step-number {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
}

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

.process-step .step-content h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.process-step .step-content p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 0;
}

/* 反馈边界列表 */
.feedback-boundary .boundary-list {
  margin-top: 12px;
}

/* 响应时限 */
.feedback-response p {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.8;
}

.feedback-response strong {
  color: var(--color-accent);
}

/* 反馈相关链接 */
.feedback-related .related-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
}

.feedback-related .related-links li {
  font-size: 14px;
  padding-left: 18px;
  position: relative;
}

.feedback-related .related-links li::before {
  content: "▸";
  position: absolute;
  left: 2px;
  color: var(--color-accent);
}

.feedback-related .related-links a {
  font-weight: 600;
}

/* 反馈页侧边栏说明 */
.sidebar-text {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

/* --------------------------------------------------------------------------
   12. Pages —— 404 页面
   -------------------------------------------------------------------------- */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  padding: 48px 20px;
}

.error-panel {
  text-align: center;
  max-width: 520px;
  width: 100%;
  background-color: var(--color-card);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
}

.error-code {
  font-size: 64px;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 12px;
  font-family: var(--font-sans);
}

.error-panel h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
}

.error-desc {
  font-size: 14px;
  color: var(--color-text-soft);
  line-height: 1.7;
  margin-bottom: 24px;
}

.error-back-link {
  display: inline-block;
  padding: 10px 28px;
  background-color: var(--color-accent);
  color: #ffffff;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  transition: background-color 0.2s ease;
}

.error-back-link:hover {
  background-color: #c7440a;
  color: #ffffff;
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   13. Responsive —— 响应式断点
   -------------------------------------------------------------------------- */

/* ---- 1024px 及以下 ---- */
@media (max-width: 1024px) {
  .layout-shell,
  .page-layout,
  .layout-with-aside {
    grid-template-columns: minmax(0, 1fr) 240px;
    gap: 24px;
  }

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

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

  .hero-panel {
    grid-template-columns: 1fr;
  }

  .hero-media {
    min-height: 220px;
  }

  .hero-media img {
    min-height: 220px;
  }
}

/* ---- 768px 及以下 ---- */
@media (max-width: 768px) {
  /* 导航切换为汉堡 */
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--color-card);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 16px rgba(31, 41, 51, 0.08);
    display: block;
    visibility: visible;
    opacity: 1;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 20px 16px;
    gap: 2px;
  }

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

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

  /* 内页布局改单列 */
  .layout-shell,
  .page-layout,
  .layout-with-aside {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .sidebar-left .page-layout,
  .sidebar-left .layout-shell {
    grid-template-columns: 1fr;
  }

  .sidebar-left .page-layout > .main-content,
  .sidebar-left .layout-shell > .main-content {
    order: 0;
  }

  .sidebar-left .page-layout > .sidebar,
  .sidebar-left .layout-shell > .sidebar {
    order: 1;
  }

  .main-content {
    order: 0;
  }

  .sidebar {
    order: 1;
    margin-top: 32px;
  }

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

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

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

  .hero-panel {
    padding: 20px;
  }

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

  /* 内页网格调整 */
  .channel-overview-section .channel-grid {
    grid-template-columns: 1fr;
  }

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

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

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

  /* 页脚 */
  .footer-nav-list {
    gap: 8px 16px;
  }
}

/* ---- 480px 及以下 ---- */
@media (max-width: 480px) {
  .header-inner {
    padding: 0 16px;
    min-height: 60px;
  }

  .brand-name {
    font-size: 19px;
  }

  .brand-tagline {
    font-size: 11px;
  }

  .site-main {
    padding: 0 16px;
  }

  .inner-main {
    padding-top: 16px;
  }

  .breadcrumb {
    margin-bottom: 14px;
    font-size: 12px;
  }

  .page-header {
    margin-bottom: 20px;
    padding-bottom: 14px;
  }

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

  .page-description {
    font-size: 14px;
  }

  .section-title {
    font-size: 19px;
  }

  .section-intro {
    font-size: 13px;
  }

  /* 首页 hero */
  .hero-panel {
    padding: 16px;
    margin: 16px 0 32px;
    gap: 16px;
  }

  .hero-media {
    min-height: 180px;
  }

  .hero-media img {
    min-height: 180px;
  }

  .hero-title {
    font-size: 22px;
  }

  .entry-card {
    padding: 12px 14px;
  }

  .entry-name {
    font-size: 15px;
    min-width: 48px;
  }

  .entry-brief {
    font-size: 12px;
  }

  /* 首页各区块间距 */
  .channel-directory,
  .topic-shelf,
  .guide-steps,
  .updates-preview,
  .help-feedback-entry {
    margin-bottom: 36px;
  }

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

  /* 专题卡片 */
  .topic-carousel {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .topic-card img {
    height: 160px;
  }

  /* 步骤卡片 */
  .step-item {
    padding: 16px;
    gap: 12px;
  }

  .step-num {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  /* 更新条目 */
  .update-item {
    flex-direction: column;
    gap: 8px;
    padding: 14px;
  }

  .update-date {
    align-self: flex-start;
  }

  /* 支持卡片 */
  .support-card {
    padding: 18px;
  }

  /* 频道卡片 */
  .channel-item {
    padding: 14px 16px;
  }

  /* 场景卡片 */
  .scene-item {
    padding: 14px 16px;
  }

  /* 专题网格 */
  .topic-grid {
    gap: 14px;
  }

  .topic-card .topic-media img {
    height: 160px;
  }

  /* 归档组 */
  .archive-group,
  .archive-month-block {
    padding: 16px;
  }

  /* 步骤卡片 */
  .step-card {
    padding: 16px;
    flex-direction: column;
    gap: 10px;
  }

  /* 验证步骤 */
  .verify-step {
    padding: 14px;
    flex-direction: column;
    gap: 10px;
  }

  /* 流程步骤 */
  .process-step {
    padding: 14px;
    flex-direction: column;
    gap: 10px;
  }

  /* 侧边栏 */
  .sidebar {
    margin-top: 24px;
  }

  .sidebar-block,
  .sidebar-module,
  .sidebar-card {
    padding: 16px;
  }

  /* 页脚 */
  .footer-inner {
    padding: 32px 16px 28px;
  }

  .footer-nav-list {
    gap: 6px 14px;
  }

  .footer-nav-list a {
    font-size: 13px;
  }

  .footer-boundary {
    font-size: 12px;
  }

  /* 404 */
  .error-panel {
    padding: 32px 24px;
  }

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

  .error-panel h1 {
    font-size: 19px;
  }

  /* 首页相关链接 */
  .home-main .related-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .related-links-label {
    margin-right: 0;
  }
}

/* ---- 320px 极窄屏 ---- */
@media (max-width: 360px) {
  .brand-name {
    font-size: 17px;
  }

  .brand-tagline {
    display: none;
  }

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

  .entry-card {
    flex-direction: column;
    gap: 4px;
    align-items: flex-start;
  }

  .entry-name {
    min-width: 0;
  }
}