/* ==========================================================================
   itmayi.cn 全站样式
   分组：base / layout / components / pages / responsive
   ========================================================================== */

/* --------------------------------------------------------------------------
   base
   -------------------------------------------------------------------------- */

:root {
  --c-bg: #FFFFFF;
  --c-surface: #F4F5F3;
  --c-ink: #14161A;
  --c-muted: #5B6270;
  --c-brand: #2B4A6F;
  --c-action: #E4572E;
  --c-line: #D8DCE2;
  --c-brand-soft: #E8EDF4;
  --radius: 6px;
  --shell-max: 1120px;
  --shell-pad: 32px;
  --shadow-soft: 0 1px 2px rgba(20, 22, 26, 0.04);
  --shadow-hover: 0 4px 14px rgba(20, 22, 26, 0.10);
}

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

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

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC",
    sans-serif;
  font-size: 15px;
  line-height: 26px;
  font-weight: 400;
  font-variant-numeric: tabular-nums;
}

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

figure {
  margin: 0;
}

a {
  color: var(--c-brand);
  text-decoration: none;
}

a:hover {
  color: var(--c-action);
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--c-ink);
  font-weight: 600;
}

h1 {
  font-size: 32px;
  line-height: 40px;
}

h2 {
  font-size: 22px;
  line-height: 30px;
}

h3 {
  font-size: 17px;
  line-height: 26px;
}

p {
  margin: 0;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

button {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--c-action);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   layout —— 全站骨架
   -------------------------------------------------------------------------- */

.site-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--c-bg);
}

/* 页头 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-line);
}

.header-inner {
  position: relative;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 var(--shell-pad);
  height: 64px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  flex: none;
  font-size: 17px;
  font-weight: 600;
  line-height: 24px;
  color: var(--c-ink);
  letter-spacing: 0;
  white-space: nowrap;
}

.brand:hover {
  color: var(--c-action);
}

/* 主导航 */
.site-nav {
  flex: 1 1 auto;
  min-width: 0;
}

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

.nav-list > li {
  position: relative;
}

.nav-list > li > a {
  display: block;
  padding: 10px 12px;
  font-size: 14px;
  line-height: 20px;
  color: var(--c-ink);
  border-radius: var(--radius);
  white-space: nowrap;
}

.nav-list > li > a:hover {
  background: var(--c-surface);
  color: var(--c-action);
}

.nav-list > li > a.is-current {
  color: var(--c-action);
  font-weight: 600;
}

/* 下拉菜单 */
.has-dropdown > .dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 50;
  min-width: 220px;
  padding: 12px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  display: none;
  grid-template-columns: 1fr;
  gap: 10px;
}

.has-dropdown:hover > .dropdown,
.has-dropdown:focus-within > .dropdown {
  display: grid;
}

.dropdown-group {
  min-width: 0;
}

.dropdown-title {
  margin: 0 0 4px;
  font-size: 12px;
  line-height: 18px;
  font-weight: 600;
  color: var(--c-muted);
}

.dropdown-group ul {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dropdown-group ul li a {
  display: block;
  padding: 6px 8px;
  font-size: 14px;
  line-height: 20px;
  color: var(--c-ink);
  border-radius: 4px;
}

.dropdown-group ul li a:hover {
  background: var(--c-surface);
  color: var(--c-action);
}

/* 移动导航按钮：桌面隐藏 */
.nav-toggle {
  display: none;
  flex: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  cursor: pointer;
  position: relative;
}

.nav-toggle::before,
.nav-toggle::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  height: 2px;
  background: var(--c-ink);
}

.nav-toggle::before {
  top: 16px;
  box-shadow: 0 6px 0 var(--c-ink);
}

.nav-toggle::after {
  bottom: 16px;
}

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

.home-main {
  display: block;
}

.inner-main {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 var(--shell-pad) 56px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 18px 0 0;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

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

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

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

.breadcrumb-current {
  color: var(--c-ink);
}

/* 内页标题区 */
.page-header {
  padding: 14px 0 0;
}

.page-title {
  font-size: 32px;
  line-height: 40px;
  font-weight: 600;
  color: var(--c-ink);
}

section.page-title {
  padding: 10px 0 0;
}

section.page-title p,
.page-lead,
.page-lede {
  max-width: 720px;
  font-size: 15px;
  line-height: 26px;
  color: var(--c-muted);
}

/* 页脚 */
.site-footer {
  margin-top: auto;
  background: var(--c-brand);
  color: #E6ECF3;
}

.footer-inner {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 40px var(--shell-pad) 28px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 28px;
}

.footer-brand {
  min-width: 0;
}

.footer-name {
  font-size: 16px;
  line-height: 24px;
  font-weight: 600;
  color: #FFFFFF;
}

.footer-desc {
  margin-top: 8px;
  font-size: 13px;
  line-height: 22px;
  color: #C3D0DE;
  max-width: 34ch;
}

.footer-col {
  min-width: 0;
}

.footer-col h2 {
  margin-bottom: 10px;
  font-size: 13px;
  line-height: 20px;
  font-weight: 600;
  color: #FFFFFF;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.footer-col ul li a {
  display: inline-block;
  font-size: 13px;
  line-height: 22px;
  color: #C3D0DE;
}

.footer-col ul li a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 14px var(--shell-pad) 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
}

.footer-bottom p {
  font-size: 12px;
  line-height: 20px;
  color: #A9B9CB;
}

/* --------------------------------------------------------------------------
   components —— 通用组件
   -------------------------------------------------------------------------- */

/* 通用按钮 */
.btn,
.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 20px;
  font-size: 14px;
  line-height: 22px;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-primary {
  background: var(--c-action);
  border-color: var(--c-action);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: #C9481F;
  border-color: #C9481F;
  color: #FFFFFF;
}

.btn-ghost {
  background: var(--c-bg);
  border-color: var(--c-line);
  color: var(--c-ink);
}

.btn-ghost:hover {
  border-color: var(--c-brand);
  color: var(--c-brand);
}

/* 模块头 */
.section-head {
  margin-bottom: 18px;
}

.section-head h2 {
  margin-bottom: 6px;
}

.section-head p {
  max-width: 760px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.section-note,
.section-intro {
  max-width: 760px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.section-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 14px;
  padding: 8px 16px;
  font-size: 14px;
  line-height: 22px;
  font-weight: 600;
  color: var(--c-action);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-bg);
}

.section-link:hover {
  border-color: var(--c-action);
  color: var(--c-action);
}

/* 折叠问答 */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-item {
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.faq-item summary {
  position: relative;
  padding: 14px 44px 14px 16px;
  font-size: 15px;
  line-height: 24px;
  font-weight: 600;
  color: var(--c-ink);
  cursor: pointer;
  list-style: none;
  min-height: 44px;
}

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

.faq-item summary::after {
  content: "＋";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 15px;
  line-height: 1;
  color: var(--c-action);
}

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

.faq-item summary:hover {
  color: var(--c-action);
}

.faq-item p {
  padding: 0 16px 16px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.faq-item p a {
  color: var(--c-brand);
  text-decoration: underline;
}

/* 关联入口 */
.related-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

.related-list li {
  min-width: 0;
}

.related-list li a {
  display: block;
  height: 100%;
  padding: 14px 16px;
  font-size: 14px;
  line-height: 22px;
  font-weight: 600;
  color: var(--c-ink);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.related-list li a:hover {
  border-color: var(--c-brand);
  color: var(--c-brand);
  box-shadow: var(--shadow-hover);
}

.related-list li h3 {
  font-size: 15px;
  line-height: 24px;
}

.related-list li p {
  margin-top: 6px;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

/* 编号列表（通用） */
.brief-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.brief-list li {
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.brief-list li::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-action);
}

/* 步骤列表（首页 / 自查 / 核验共用语义，作用域分开） */
.step-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.step-list > li {
  min-width: 0;
}

/* --------------------------------------------------------------------------
   pages —— 首页
   -------------------------------------------------------------------------- */

/* 焦点区 */
.hero-focus {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 40px var(--shell-pad) 32px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
}

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

.hero-copy h1 {
  margin-bottom: 14px;
}

.hero-lead {
  max-width: 34ch;
  font-size: 16px;
  line-height: 28px;
  color: var(--c-muted);
}

.hero-slogan {
  margin-top: 10px;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-brand);
}

.hero-actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

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

.hero-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--c-line);
}

.hero-figure figcaption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

/* 频道标签带 */
.channel-tag-strip {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 var(--shell-pad) 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.channel-tag {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 16px;
  font-size: 14px;
  line-height: 22px;
  color: var(--c-ink);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: 999px;
}

.channel-tag:hover {
  border-color: var(--c-brand);
  color: var(--c-brand);
  box-shadow: var(--shadow-hover);
}

/* 分层卡片流 */
.card-flow {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 32px var(--shell-pad);
}

.card {
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  border-color: var(--c-brand);
  box-shadow: var(--shadow-hover);
}

.card-media {
  overflow: hidden;
}

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

.card-body {
  padding: 16px;
}

.card-body h3 {
  margin-bottom: 6px;
}

.card-body p {
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.card-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-top: 8px;
  font-size: 14px;
  line-height: 22px;
  font-weight: 600;
  color: var(--c-action);
}

.card-link:hover {
  color: #C9481F;
}

/* 大卡 */
.card-lg {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
}

.card-lg .card-media {
  min-height: 260px;
}

.card-lg .card-media img {
  height: 100%;
  aspect-ratio: 16 / 10;
}

.card-lg .card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* 中卡行 */
.card-row {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.card-md .card-media img {
  aspect-ratio: 16 / 9;
}

/* 小卡行 */
.card-row-sm {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-sm {
  background: var(--c-surface);
}

/* 频道栏与内容流 */
.channel-rail-content {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 32px var(--shell-pad);
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 32px;
  align-items: start;
  border-top: 1px solid var(--c-line);
}

.channel-rail {
  min-width: 0;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  padding: 18px 16px;
}

.channel-rail h2 {
  font-size: 17px;
  line-height: 26px;
}

.rail-note {
  margin-top: 6px;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

.rail-group {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--c-line);
}

.rail-group h3 {
  margin-bottom: 8px;
  font-size: 13px;
  line-height: 20px;
  color: var(--c-brand);
}

.rail-group ul {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.rail-group ul li a {
  display: block;
  min-height: 40px;
  padding: 9px 10px;
  font-size: 14px;
  line-height: 22px;
  color: var(--c-ink);
  border-radius: 4px;
}

.rail-group ul li a:hover {
  background: var(--c-bg);
  color: var(--c-action);
}

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

.stream-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.video-card {
  min-width: 0;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  overflow: hidden;
  padding-bottom: 14px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.video-card:hover {
  border-color: var(--c-brand);
  box-shadow: var(--shadow-hover);
}

.video-card figure {
  overflow: hidden;
}

.video-card figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.video-card h3 {
  margin: 12px 14px 4px;
  font-size: 16px;
  line-height: 24px;
}

.video-card .video-meta {
  margin: 0 14px;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

.video-card-text {
  padding: 16px 14px;
  background: var(--c-surface);
}

.video-card-text h3 {
  margin: 0 0 6px;
}

.video-card-text .video-meta {
  margin: 0;
}

.video-card-text p:last-child {
  margin-top: 8px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

/* 片单速览 */
.playlist-brief,
.self-check-brief,
.entry-check-brief,
.faq-brief,
.editorial-brief {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 32px var(--shell-pad);
  border-top: 1px solid var(--c-line);
}

.playlist-rows {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.playlist-row {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 12px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.playlist-row:hover {
  border-color: var(--c-brand);
  box-shadow: var(--shadow-hover);
}

.playlist-row figure {
  overflow: hidden;
  border-radius: 4px;
}

.playlist-row figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.playlist-row-body {
  min-width: 0;
}

.playlist-row-body h3 {
  margin-bottom: 4px;
  font-size: 16px;
  line-height: 24px;
}

.playlist-row-body p {
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.row-link {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 8px 16px;
  font-size: 14px;
  line-height: 22px;
  font-weight: 600;
  color: var(--c-brand);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  white-space: nowrap;
}

.row-link:hover {
  border-color: var(--c-brand);
  color: var(--c-action);
}

/* 首页步骤编号 */
.step-list li .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  margin-right: 8px;
  font-size: 13px;
  font-weight: 600;
  color: #FFFFFF;
  background: var(--c-brand);
  border-radius: 50%;
  vertical-align: middle;
}

.entry-check-brief .step-list > li {
  padding: 12px 14px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

/* --------------------------------------------------------------------------
   pages —— 内页通用布局
   -------------------------------------------------------------------------- */

.page-layout {
  display: grid;
  gap: 32px;
  margin-top: 28px;
  align-items: start;
}

.page-layout.sidebar-left,
.sidebar-left .page-layout {
  grid-template-columns: 220px minmax(0, 1fr);
}

.page-layout.layout-shell {
  grid-template-columns: minmax(0, 1fr) 320px;
}

/* 内容区块 */
.content-section {
  margin-bottom: 32px;
}

.content-section > h2 {
  margin-bottom: 8px;
}

.content-section > p {
  max-width: 760px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

/* --------------------------------------------------------------------------
   pages —— 频道总览
   -------------------------------------------------------------------------- */

.channel-filter {
  min-width: 0;
  position: sticky;
  top: 84px;
  padding: 18px 16px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.aside-title {
  font-size: 16px;
  line-height: 24px;
  margin-bottom: 10px;
}

.filter-group {
  padding-top: 12px;
  margin-top: 12px;
  border-top: 1px solid var(--c-line);
}

.filter-group h3 {
  margin-bottom: 6px;
  font-size: 13px;
  line-height: 20px;
  color: var(--c-brand);
}

.filter-group ul {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.filter-group ul li a {
  display: block;
  min-height: 40px;
  padding: 9px 10px;
  font-size: 14px;
  line-height: 22px;
  color: var(--c-ink);
  border-radius: 4px;
}

.filter-group ul li a:hover {
  background: var(--c-bg);
  color: var(--c-action);
}

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

/* 分类口径三列 */
.dimension-grid {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.dimension-item {
  min-width: 0;
  padding: 16px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.dimension-item h3 {
  margin-bottom: 6px;
  font-size: 16px;
  line-height: 24px;
}

.dimension-item p {
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

/* 更新节律 */
.rhythm-list {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rhythm-list li {
  padding: 12px 14px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.rhythm-list li strong {
  color: var(--c-ink);
  font-weight: 600;
}

/* 频道区条目 */
.channel-block {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 20px;
  padding: 16px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.channel-block-media {
  overflow: hidden;
  border-radius: 4px;
}

.channel-block-media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.channel-block-body {
  min-width: 0;
}

.channel-block-body h3 {
  margin-bottom: 6px;
  font-size: 17px;
  line-height: 26px;
}

.channel-block-body > p {
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.channel-block-lists {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.channel-block-lists h4 {
  margin-bottom: 6px;
  font-size: 13px;
  line-height: 20px;
  font-weight: 600;
  color: var(--c-brand);
}

.channel-block-lists ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.channel-block-lists ul li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.channel-block-lists ul li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--c-line);
}

/* 映射表 */
.mapping-table {
  margin-top: 16px;
  font-size: 14px;
  line-height: 24px;
}

.mapping-table caption {
  padding-bottom: 10px;
  text-align: left;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

.mapping-table th,
.mapping-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--c-line);
  vertical-align: top;
}

.mapping-table thead th {
  background: var(--c-surface);
  color: var(--c-ink);
  font-weight: 600;
}

.mapping-table tbody th {
  color: var(--c-ink);
  font-weight: 600;
  white-space: nowrap;
}

.mapping-table tbody td {
  color: var(--c-muted);
}

.mapping-note {
  margin-top: 12px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

/* --------------------------------------------------------------------------
   pages —— 片单索引
   -------------------------------------------------------------------------- */

.playlist-list {
  margin-top: 28px;
}

.playlist-list h2 {
  margin-bottom: 6px;
}

.playlist-item {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 20px;
  padding: 16px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.playlist-item:hover {
  border-color: var(--c-brand);
  box-shadow: var(--shadow-hover);
}

.playlist-cover {
  overflow: hidden;
  border-radius: 4px;
}

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

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

.playlist-body h3 {
  margin-bottom: 6px;
  font-size: 17px;
  line-height: 26px;
}

.playlist-standard {
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.playlist-channel {
  margin-top: 6px;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

.playlist-channel a {
  color: var(--c-brand);
  text-decoration: underline;
}

.playlist-entries {
  margin-top: 12px;
  counter-reset: entry;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.playlist-entries li {
  position: relative;
  padding-left: 30px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-ink);
  counter-increment: entry;
}

.playlist-entries li::before {
  content: counter(entry);
  position: absolute;
  left: 0;
  top: 1px;
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  line-height: 1;
  color: var(--c-brand);
  background: var(--c-brand-soft);
  border-radius: 50%;
}

.playlist-order-note {
  margin-top: 32px;
  padding: 20px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.playlist-order-note h2 {
  margin-bottom: 6px;
}

.order-list {
  margin-top: 12px;
}

.order-list dt {
  font-size: 15px;
  line-height: 24px;
  font-weight: 600;
  color: var(--c-ink);
}

.order-list dd {
  margin: 4px 0 14px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.order-list dd:last-child {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   pages —— 观看环境自查
   -------------------------------------------------------------------------- */

.check-list-main {
  min-width: 0;
}

.check-block {
  margin-bottom: 32px;
}

.check-block > h2 {
  margin-bottom: 8px;
}

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

.check-item {
  position: relative;
  padding: 14px 16px 14px 52px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  counter-increment: check;
}

.check-item::before {
  content: counter(check);
  position: absolute;
  left: 16px;
  top: 16px;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  color: #FFFFFF;
  background: var(--c-brand);
  border-radius: 50%;
}

.check-item h3 {
  margin-bottom: 4px;
  font-size: 15px;
  line-height: 24px;
}

.check-item p {
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

/* 异常处理顺序 */
.troubleshooting {
  padding: 20px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.troubleshooting > h2 {
  margin-bottom: 8px;
}

.troubleshooting .step-list {
  margin-top: 16px;
}

.troubleshooting .step-item {
  position: relative;
  padding: 12px 14px 12px 52px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.troubleshooting .step-item .step-index {
  position: absolute;
  left: 14px;
  top: 13px;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  color: #FFFFFF;
  background: var(--c-action);
  border-radius: 50%;
}

.troubleshooting .step-item h3 {
  margin-bottom: 4px;
  font-size: 15px;
  line-height: 24px;
}

.troubleshooting .step-item p {
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

/* 清晰度对照面板 */
.clarity-panel {
  min-width: 0;
  padding: 18px 16px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.clarity-panel h2 {
  margin-bottom: 12px;
  font-size: 17px;
  line-height: 26px;
}

.panel-figure {
  margin-bottom: 14px;
}

.panel-figure img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--c-line);
}

.panel-figure figcaption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

.clarity-table {
  font-size: 13px;
  line-height: 22px;
}

.clarity-table caption {
  padding-bottom: 8px;
  text-align: left;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

.clarity-table th,
.clarity-table td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--c-line);
  vertical-align: top;
}

.clarity-table thead th {
  background: var(--c-bg);
  color: var(--c-ink);
  font-weight: 600;
}

.clarity-table tbody td {
  color: var(--c-muted);
}

.panel-note {
  margin-top: 12px;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

/* 关联入口条 */
.related-entry {
  margin-top: 32px;
  padding: 20px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.related-entry h2 {
  margin-bottom: 12px;
  font-size: 17px;
  line-height: 26px;
}

.related-entry ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.related-entry ul li a {
  display: block;
  min-height: 44px;
  padding: 12px 14px;
  font-size: 14px;
  line-height: 22px;
  font-weight: 600;
  color: var(--c-ink);
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.related-entry ul li a:hover {
  border-color: var(--c-brand);
  color: var(--c-brand);
  box-shadow: var(--shadow-hover);
}

/* --------------------------------------------------------------------------
   pages —— 入口核验
   -------------------------------------------------------------------------- */

.check-before {
  margin-top: 28px;
}

.check-before > h2 {
  margin-bottom: 6px;
}

.before-list {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.before-list li {
  min-width: 0;
  padding: 16px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.before-list li h3 {
  margin-bottom: 6px;
  font-size: 16px;
  line-height: 24px;
}

.before-list li p {
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.check-steps {
  margin-top: 32px;
}

.check-steps > h2 {
  margin-bottom: 6px;
}

.check-steps .step-list {
  margin-top: 16px;
  counter-reset: verify;
}

.check-steps .step-item {
  position: relative;
  padding: 16px 18px 16px 64px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  counter-increment: verify;
}

.check-steps .step-item .step-index {
  position: absolute;
  left: 18px;
  top: 16px;
  margin: 0;
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  color: #FFFFFF;
  background: var(--c-brand);
  border-radius: 50%;
}

.check-steps .step-item h3 {
  margin-bottom: 6px;
  font-size: 16px;
  line-height: 24px;
}

.check-steps .step-item .step-goal,
.check-steps .step-item .step-how,
.check-steps .step-item .step-rule {
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.check-steps .step-item .step-goal {
  color: var(--c-ink);
}

.check-steps .step-item .step-how {
  margin-top: 4px;
}

.check-steps .step-item .step-rule {
  margin-top: 4px;
}

/* 特征对照 */
.compare-section {
  margin-top: 32px;
}

.compare-section > h2 {
  margin-bottom: 6px;
}

.compare-figure {
  margin-top: 16px;
}

.compare-figure img {
  width: 100%;
  max-height: 320px;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--c-line);
}

.compare-figure figcaption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

.compare-table {
  margin-top: 16px;
  font-size: 14px;
  line-height: 24px;
}

.compare-table caption {
  padding-bottom: 10px;
  text-align: left;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

.compare-table th,
.compare-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--c-line);
  vertical-align: top;
}

.compare-table thead th {
  background: var(--c-surface);
  color: var(--c-ink);
  font-weight: 600;
}

.compare-table tbody th {
  color: var(--c-ink);
  font-weight: 600;
  white-space: nowrap;
}

.compare-table tbody td {
  color: var(--c-muted);
}

/* 异常处理 */
.exception-note {
  margin-top: 32px;
  padding: 20px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.exception-note > h2 {
  margin-bottom: 6px;
}

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

.exception-list li {
  min-width: 0;
  padding: 14px 16px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.exception-list li h3 {
  margin-bottom: 4px;
  font-size: 15px;
  line-height: 24px;
}

.exception-list li p {
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

/* --------------------------------------------------------------------------
   pages —— 名词口径
   -------------------------------------------------------------------------- */

.term-groups {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.term-group {
  padding: 20px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.term-group-head {
  margin-bottom: 14px;
}

.term-group-head h2 {
  margin-bottom: 6px;
}

.term-group-head p {
  max-width: 720px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.term-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.term-item {
  min-width: 0;
  padding: 14px 16px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.term-item h3 {
  margin-bottom: 6px;
  font-size: 15px;
  line-height: 24px;
}

.term-scope {
  font-size: 14px;
  line-height: 24px;
  color: var(--c-ink);
}

.term-misread {
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px dashed var(--c-line);
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

.term-figure {
  margin: 0;
}

.term-figure img {
  width: 100%;
  max-height: 280px;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--c-line);
}

.term-figure figcaption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

.consistency-note {
  margin-top: 32px;
  padding: 20px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.consistency-note > h2 {
  margin-bottom: 6px;
}

.consistency-note > p {
  max-width: 760px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.note-list {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.note-list li {
  min-width: 0;
  padding: 14px 16px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.note-list li h3 {
  margin-bottom: 4px;
  font-size: 15px;
  line-height: 24px;
}

.note-list li p {
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

/* --------------------------------------------------------------------------
   pages —— 常见问题
   -------------------------------------------------------------------------- */

.faq-group {
  margin-top: 28px;
}

.faq-group .section-head {
  margin-bottom: 14px;
}

.faq-figure {
  margin-bottom: 16px;
}

.faq-figure img {
  width: 100%;
  max-height: 260px;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--c-line);
}

.faq-figure figcaption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

.next-step-bar {
  margin-top: 32px;
  padding: 20px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.next-step-bar h2 {
  margin-bottom: 6px;
}

.next-step-list {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.next-step-list li {
  min-width: 0;
}

.next-step-list li a {
  display: block;
  height: 100%;
  min-height: 44px;
  padding: 14px 16px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.next-step-list li a:hover {
  border-color: var(--c-brand);
  box-shadow: var(--shadow-hover);
}

.next-step-list .step-name {
  display: block;
  font-size: 15px;
  line-height: 24px;
  font-weight: 600;
  color: var(--c-ink);
}

.next-step-list .step-desc {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

/* --------------------------------------------------------------------------
   pages —— 取材与勘误
   -------------------------------------------------------------------------- */

.scope-article {
  margin-top: 28px;
}

.scope-article h2 {
  margin-bottom: 10px;
}

.scope-article p {
  max-width: 760px;
  font-size: 15px;
  line-height: 26px;
  color: var(--c-muted);
}

.scope-article p + p {
  margin-top: 12px;
}

.scope-figure {
  margin-top: 18px;
}

.scope-figure img {
  width: 100%;
  max-height: 300px;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--c-line);
}

.scope-figure figcaption {
  margin-top: 8px;
  font-size: 13px;
  line-height: 22px;
  color: var(--c-muted);
}

.exclude-list {
  margin-top: 32px;
  padding: 20px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.exclude-list h2 {
  margin-bottom: 6px;
}

.exclude-list > p {
  max-width: 760px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.exclude-list > ul {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.exclude-list > ul li {
  position: relative;
  padding-left: 24px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-ink);
}

.exclude-list > ul li::before {
  content: "×";
  position: absolute;
  left: 4px;
  top: 0;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-action);
}

.correction-flow {
  margin-top: 32px;
}

.correction-flow > h2 {
  margin-bottom: 6px;
}

.correction-flow > p {
  max-width: 760px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

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

.flow-steps > li {
  position: relative;
  padding: 14px 16px 14px 56px;
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.flow-steps > li .step-index {
  position: absolute;
  left: 16px;
  top: 15px;
  width: 26px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  color: #FFFFFF;
  background: var(--c-brand);
  border-radius: 50%;
}

.flow-steps > li h3 {
  margin-bottom: 4px;
  font-size: 15px;
  line-height: 24px;
}

.flow-steps > li p {
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.flow-steps > li p a {
  color: var(--c-brand);
  text-decoration: underline;
}

.flow-note {
  margin-top: 14px;
  font-size: 14px;
  line-height: 24px;
  color: var(--c-muted);
}

.flow-note a {
  color: var(--c-brand);
  text-decoration: underline;
}

/* --------------------------------------------------------------------------
   pages —— 404
   -------------------------------------------------------------------------- */

.error-main {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 48px var(--shell-pad) 64px;
}

.error-panel {
  padding: 32px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.error-code {
  font-size: 13px;
  line-height: 22px;
  font-weight: 600;
  color: var(--c-action);
}

.error-panel h1 {
  margin-top: 8px;
}

.error-lead {
  margin-top: 10px;
  max-width: 640px;
  font-size: 15px;
  line-height: 26px;
  color: var(--c-muted);
}

.error-actions {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.error-guide {
  margin-top: 32px;
}

.error-guide h2 {
  margin-bottom: 12px;
}

.error-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

.error-links li a {
  display: block;
  min-height: 44px;
  padding: 14px 16px;
  font-size: 14px;
  line-height: 22px;
  font-weight: 600;
  color: var(--c-ink);
  background: var(--c-bg);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}

.error-links li a:hover {
  border-color: var(--c-brand);
  color: var(--c-brand);
  box-shadow: var(--shadow-hover);
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .hero-focus {
    gap: 28px;
  }

  .stream-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .channel-rail-content {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 24px;
  }

  .page-layout.layout-shell {
    grid-template-columns: minmax(0, 1fr) 280px;
  }

  .playlist-item {
    grid-template-columns: 260px minmax(0, 1fr);
  }
}

@media (max-width: 900px) {
  .card-lg {
    grid-template-columns: minmax(0, 1fr);
  }

  .card-lg .card-media {
    min-height: 0;
  }

  .card-row-sm {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .channel-rail-content {
    grid-template-columns: minmax(0, 1fr);
  }

  .channel-rail {
    position: static;
  }

  .rail-group ul {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px 8px;
  }

  .dimension-grid,
  .before-list,
  .note-list,
  .next-step-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  :root {
    --shell-pad: 20px;
  }

  body {
    font-size: 15px;
    line-height: 26px;
  }

  h1,
  .page-title {
    font-size: 26px;
    line-height: 34px;
  }

  h2 {
    font-size: 20px;
    line-height: 28px;
  }

  h3 {
    font-size: 16px;
    line-height: 24px;
  }

  /* 页头与移动导航 */
  .header-inner {
    height: 60px;
    gap: 12px;
    padding: 0 var(--shell-pad);
  }

  .brand {
    flex: 1 1 auto;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
  }

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

  .site-nav {
    flex: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 45;
    background: var(--c-bg);
    border-bottom: 1px solid var(--c-line);
    box-shadow: var(--shadow-soft);
    padding: 8px var(--shell-pad) 16px;
    max-height: calc(100vh - 60px);
    overflow-y: auto;
    display: block;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

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

  .nav-list > li > a {
    min-height: 48px;
    padding: 13px 8px;
    font-size: 15px;
    line-height: 22px;
    border-bottom: 1px solid var(--c-line);
    border-radius: 0;
  }

  .nav-list > li > a.is-current {
    color: var(--c-action);
  }

  .has-dropdown > .dropdown {
    position: static;
    display: grid;
    min-width: 0;
    margin: 4px 0 10px;
    padding: 10px 12px;
    border: 1px solid var(--c-line);
    box-shadow: none;
  }

  .has-dropdown:hover > .dropdown {
    display: grid;
  }

  .dropdown-group ul li a {
    min-height: 44px;
    padding: 11px 8px;
    font-size: 14px;
  }

  /* 首页 */
  .hero-focus {
    grid-template-columns: minmax(0, 1fr);
    padding: 24px var(--shell-pad) 20px;
    gap: 20px;
  }

  .hero-copy h1 {
    margin-bottom: 10px;
  }

  .hero-lead {
    max-width: none;
    font-size: 15px;
    line-height: 26px;
  }

  .hero-actions {
    gap: 10px;
  }

  .hero-actions .btn,
  .hero-actions .btn-primary,
  .hero-actions .btn-ghost {
    flex: 1 1 160px;
  }

  .channel-tag-strip {
    padding-bottom: 4px;
  }

  .channel-tag {
    min-height: 44px;
  }

  .card-flow,
  .playlist-brief,
  .self-check-brief,
  .entry-check-brief,
  .faq-brief,
  .editorial-brief {
    padding: 24px var(--shell-pad);
  }

  .card-row,
  .card-row-sm {
    grid-template-columns: minmax(0, 1fr);
  }

  .card-lg .card-body,
  .card-body {
    padding: 14px;
  }

  .channel-rail-content {
    padding: 24px var(--shell-pad);
    gap: 20px;
  }

  .rail-group ul {
    grid-template-columns: minmax(0, 1fr);
  }

  .stream-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .playlist-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
  }

  .playlist-row figure img {
    aspect-ratio: 16 / 9;
  }

  .row-link {
    width: 100%;
  }

  /* 内页骨架 */
  .inner-main {
    padding: 0 var(--shell-pad) 40px;
  }

  .breadcrumb {
    padding-top: 14px;
  }

  .page-header {
    padding-top: 10px;
  }

  .page-layout,
  .page-layout.sidebar-left,
  .sidebar-left .page-layout,
  .page-layout.layout-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 24px;
    margin-top: 22px;
  }

  .channel-filter {
    position: static;
  }

  .filter-group ul {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px 8px;
  }

  .dimension-grid,
  .before-list,
  .note-list,
  .next-step-list,
  .term-list,
  .channel-block-lists {
    grid-template-columns: minmax(0, 1fr);
  }

  .channel-block {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .mapping-table,
  .compare-table,
  .clarity-table {
    font-size: 13px;
    line-height: 22px;
  }

  .mapping-table th,
  .mapping-table td,
  .compare-table th,
  .compare-table td,
  .clarity-table th,
  .clarity-table td {
    padding: 9px 8px;
  }

  .mapping-table tbody th,
  .compare-table tbody th {
    white-space: normal;
  }

  .playlist-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .check-item {
    padding: 14px 14px 14px 48px;
  }

  .check-item::before {
    left: 14px;
    top: 15px;
  }

  .check-steps .step-item {
    padding: 14px 14px 14px 52px;
  }

  .check-steps .step-item .step-index {
    left: 14px;
    top: 15px;
  }

  .flow-steps > li {
    padding: 14px 14px 14px 50px;
  }

  .flow-steps > li .step-index {
    left: 14px;
    top: 15px;
  }

  .troubleshooting .step-item {
    padding: 12px 12px 12px 48px;
  }

  .troubleshooting .step-item .step-index {
    left: 12px;
  }

  .compare-figure img,
  .scope-figure img,
  .faq-figure img,
  .term-figure img {
    max-height: 220px;
    aspect-ratio: 16 / 9;
  }

  .error-main {
    padding: 32px var(--shell-pad) 48px;
  }

  .error-panel {
    padding: 22px 18px;
  }

  .error-actions .btn-primary,
  .error-actions .btn-ghost {
    flex: 1 1 140px;
  }

  /* 页脚 */
  .footer-inner {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
    padding: 32px var(--shell-pad) 22px;
  }

  .footer-desc {
    max-width: none;
  }

  .footer-col ul li a {
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .footer-bottom {
    padding: 14px var(--shell-pad) 24px;
    flex-direction: column;
    gap: 6px;
  }
}

@media (max-width: 400px) {
  .hero-actions .btn,
  .hero-actions .btn-primary,
  .hero-actions .btn-ghost,
  .error-actions .btn-primary,
  .error-actions .btn-ghost {
    flex: 1 1 100%;
  }

  .channel-tag {
    padding: 8px 14px;
    font-size: 13px;
  }
}