/* ==========================================================
   星美传媒 · 全站样式表
   版本：1.0
   ========================================================== */

/* ==========================================================
   Base — 基础变量、重置与全局字体
   ========================================================== */

:root {
  --color-text: #111111;
  --color-bg: #F6F5F1;
  --color-card: #FFFFFF;
  --color-accent: #B42318;
  --color-accent-dark: #7C2D12;
  --color-link: #9A3412;
  --color-link-hover: #7C2D12;
  --color-border: #111111;
  --color-focus: #1D4ED8;
  --color-header-bg: #111111;
  --color-header-text: #FFFFFF;
  --color-footer-bg: #111111;
  --color-footer-text: #E5E5E5;
  --color-muted: #555555;
  --color-light-bg: #EDEBE5;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-size-h1: 40px;
  --font-size-h2: 28px;
  --font-size-body: 16px;
  --font-size-small: 15px;
  --line-height-body: 1.7;
  --container-width: 1200px;
  --border-radius: 8px;
  --transition-fast: 0.2s ease;
  --space-section: 64px;
  --space-block: 24px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

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

a {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-link-hover);
  text-decoration-thickness: 2px;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

button {
  font-family: var(--font-family);
  border: none;
  background: none;
  cursor: pointer;
  font-size: 1rem;
  color: inherit;
}

ul,
ol {
  list-style-position: inside;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
}

h1 {
  font-size: var(--font-size-h1);
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: 1.125rem;
}

p {
  margin-bottom: var(--space-block);
}

p:last-child {
  margin-bottom: 0;
}

/* 辅助可访问性类 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

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

/* ==========================================================
   Layout — 全站骨架：页头、导航、页脚、容器
   ========================================================== */

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

/* —— 页头 —— */

.site-header {
  background-color: var(--color-header-bg);
  color: var(--color-header-text);
  border-bottom: 3px solid var(--color-accent);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 68px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  color: var(--color-header-text);
  flex-shrink: 0;
}

.brand-link:hover {
  color: var(--color-header-text);
  text-decoration: none;
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

/* —— 主导航 —— */

.site-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 2px;
  align-items: center;
}

.nav-list li {
  list-style: none;
}

.nav-list a {
  display: inline-block;
  padding: 8px 14px;
  color: var(--color-header-text);
  text-decoration: none;
  font-size: 0.95rem;
  border-radius: 4px;
  border-bottom: 2px solid transparent;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.nav-list a:hover {
  background-color: rgba(255, 255, 255, 0.12);
  color: var(--color-header-text);
  text-decoration: none;
}

.nav-list a.is-current {
  background-color: rgba(255, 255, 255, 0.18);
  border-bottom-color: var(--color-accent);
  font-weight: 600;
}

/* 汉堡按钮（手机端显示） */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 8px;
  background-color: transparent;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 6px;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-header-text);
  border-radius: 1px;
}

/* 语言标识 */
.lang-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 4px;
  padding: 4px 10px;
  white-space: nowrap;
  flex-shrink: 0;
}

/* —— 主内容 —— */

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

.site-main.inner-main {
  padding-bottom: 72px;
}

/* 统一内页容器宽度 */
.site-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* 内页主内容容器（含面包屑、页头） */
.inner-main > .breadcrumb,
.inner-main > .page-header,
.inner-main > .page-layout,
.inner-main > .topic-filter,
.inner-main > .featured-topic,
.inner-main > .editor-note,
.inner-main > .more-topics,
.inner-main > .guide-task,
.inner-main > .guide-overview,
.inner-main > .guide-explore,
.inner-main > .faq-layout,
.inner-main > .faq-explore,
.inner-main > .about-section,
.inner-main > .related-links {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* —— 面包屑 —— */

.breadcrumb {
  padding-top: 24px;
  padding-bottom: 0;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.breadcrumb a {
  color: var(--color-link);
  text-decoration: underline;
}

.breadcrumb-sep {
  margin: 0 8px;
  color: var(--color-muted);
}

.breadcrumb-current {
  color: var(--color-text);
  font-weight: 600;
}

/* —— 页面标题区 —— */

.page-header {
  padding-top: 20px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 40px;
}

.page-title {
  font-size: 32px;
  line-height: 1.3;
  margin-bottom: 8px;
}

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

/* —— 页脚 —— */

.site-footer {
  background-color: var(--color-footer-bg);
  color: var(--color-footer-text);
  font-size: 0.9rem;
  margin-top: auto;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 16px;
  min-height: 56px;
}

.footer-brand {
  font-weight: 600;
  color: var(--color-footer-text);
  margin: 0;
}

.footer-divider {
  color: rgba(255, 255, 255, 0.4);
}

.footer-tagline {
  color: var(--color-footer-text);
  margin: 0;
}

.footer-note {
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
}

.footer-nav {
  margin-left: auto;
  display: flex;
  gap: 12px;
}

.footer-nav a {
  color: var(--color-footer-text);
  font-size: 0.85rem;
  text-decoration: underline;
  text-underline-offset: 2px;
}

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

/* —— 通用模块标题与说明 —— */

.section-title {
  font-size: 28px;
  margin-bottom: 8px;
}

.section-desc,
.section-intro {
  font-size: 1rem;
  color: var(--color-muted);
  margin-bottom: 24px;
  max-width: 680px;
}

.text-link {
  display: inline-block;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ==========================================================
   Components — 通用组件：按钮、卡片、链接列表等
   ========================================================== */

/* —— 按钮 —— */

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  text-align: center;
  border: 2px solid transparent;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  min-height: 44px;
  line-height: 1.2;
}

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

.btn-primary:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: #FFFFFF;
  text-decoration: none;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-card);
  border-color: var(--color-accent);
  color: var(--color-accent);
  text-decoration: none;
}

/* —— 卡片 hover 动效 —— */

.path-card,
.topic-card,
.feature-card,
.direction-item,
.update-item,
.adjust-item {
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.path-card:hover,
.topic-card:hover,
.feature-card:hover,
.direction-item:hover,
.update-item:hover,
.adjust-item:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
}

/* ==========================================================
   Pages — 首页（index.html）
   ========================================================== */

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

/* —— 首屏状态区 —— */

.hero-section {
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 64px 24px 56px;
}

.hero-section {
  max-width: var(--container-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-kicker {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-accent);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 4px 12px;
  margin-bottom: 16px;
}

.hero-section h1 {
  font-size: 40px;
  line-height: 1.25;
  margin-bottom: 16px;
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--color-muted);
  margin-bottom: 28px;
  max-width: 480px;
}

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

.hero-media {
  position: relative;
}

.hero-figure {
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  background-color: var(--color-card);
}

.hero-figure img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.status-card {
  position: absolute;
  left: 16px;
  bottom: 16px;
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: 6px;
  padding: 12px 16px;
  max-width: 260px;
  box-shadow: 4px 4px 0 rgba(17, 17, 17, 0.08);
}

.status-card.status-next {
  bottom: 88px;
}

.status-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.status-text {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0;
}

/* —— 观众路径区 —— */

.audience-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 64px 24px;
}

.audience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.path-card {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
}

.path-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.path-card p {
  font-size: 0.95rem;
  color: var(--color-muted);
  flex-grow: 1;
  margin-bottom: 20px;
}

.path-card a {
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* —— 主推荐区 —— */

.feature-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 64px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.feature-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.feature-editorial {
  font-size: 1rem;
  line-height: var(--line-height-body);
  margin-bottom: 16px;
}

.feature-card {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.feature-card figure {
  border-bottom: 2px solid var(--color-border);
}

.feature-card figure img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.feature-card-body {
  padding: 24px;
}

.card-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: 4px;
  padding: 2px 10px;
  margin-bottom: 12px;
}

.feature-card-body h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.feature-card-body p {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.feature-card-body a {
  font-weight: 600;
}

/* —— 次推荐区 —— */

.secondary-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 64px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.recommend-links .section-title {
  margin-bottom: 16px;
}

.link-list {
  list-style: none;
  border-top: 2px solid var(--color-border);
}

.link-list li {
  border-bottom: 2px solid var(--color-border);
}

.link-list a {
  display: block;
  padding: 16px 4px;
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.tag-group .section-title {
  margin-bottom: 8px;
}

.tag-group .section-desc {
  margin-bottom: 16px;
}

.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.tag-list li {
  margin: 0;
}

.tag-list a {
  display: inline-block;
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.tag-list a:hover {
  background-color: var(--color-accent);
  color: #FFFFFF;
  text-decoration: none;
}

/* —— 最新动态区 —— */

.news-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 64px;
}

.news-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.news-list {
  list-style: none;
  border-top: 2px solid var(--color-border);
}

.news-item {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 16px 4px;
  border-bottom: 2px solid var(--color-border);
}

.news-cat {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  background-color: var(--color-light-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 2px 10px;
  text-align: center;
  justify-self: start;
}

.news-item p {
  font-size: 0.95rem;
  margin: 0;
}

.news-item time {
  font-size: 0.85rem;
  color: var(--color-muted);
  white-space: nowrap;
}

/* —— 专题入口区 —— */

.topic-section {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 64px;
}

.topic-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.topic-card {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.topic-card figure {
  border-bottom: 2px solid var(--color-border);
}

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

.topic-card h3 {
  padding: 20px 20px 0;
  font-size: 1.15rem;
}

.topic-card p {
  padding: 8px 20px 0;
  font-size: 0.9rem;
  color: var(--color-muted);
  flex-grow: 1;
}

.topic-card a {
  margin: 16px 20px 20px;
  font-weight: 600;
  align-self: flex-start;
}

.topic-card-solid {
  background-color: var(--color-light-bg);
  border-color: var(--color-border);
}

.topic-card-solid h3 {
  padding-top: 32px;
}

.topic-card-solid p {
  padding-top: 12px;
}

.topic-card-solid a {
  margin-top: 24px;
}

/* —— 关于本站短说明 —— */

.about-note {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 64px;
  border-top: 2px solid var(--color-border);
  padding-top: 48px;
}

.about-note .section-title {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.about-note p {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: 12px;
}

/* —— 相关链接条 —— */

.related-links {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px 48px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links-label {
  font-weight: 600;
  font-size: 0.9rem;
}

.related-links-item {
  font-size: 0.9rem;
}

/* ==========================================================
   Pages — 频道分类（xmcm/pindao.html）
   ========================================================== */

.page-layout {
  display: grid;
  grid-template-columns: 72% 28%;
  gap: 32px;
  align-items: start;
}

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

/* —— 内容方向任务组 —— */

.direction-section {
  margin-bottom: 56px;
}

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

.direction-item {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 20px 24px;
}

.direction-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 8px;
}

.direction-name {
  font-size: 1.15rem;
  font-weight: 700;
}

.direction-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: 4px;
  padding: 2px 10px;
  white-space: nowrap;
}

.direction-desc {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.direction-action {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.direction-action a {
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* —— 观众任务路径 —— */

.task-path-section {
  margin-bottom: 56px;
}

.path-figure {
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  margin-bottom: 24px;
  background-color: var(--color-card);
}

.path-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
}

.path-figure figcaption {
  padding: 12px 16px;
  font-size: 0.85rem;
  color: var(--color-muted);
  background-color: var(--color-card);
  border-top: 2px solid var(--color-border);
}

.task-path-list {
  display: grid;
  gap: 24px;
}

.task-path-item {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 24px;
}

.task-path-name {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.task-path-desc {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.task-path-steps {
  list-style-position: inside;
  margin-bottom: 16px;
  padding-left: 8px;
}

.task-path-steps li {
  font-size: 0.95rem;
  margin-bottom: 6px;
}

.task-path-link {
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* —— 侧栏 —— */

.sidebar {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 24px;
  position: sticky;
  top: 88px;
}

.sidebar-title {
  font-size: 1.1rem;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
}

.sidebar-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sidebar-link-item {
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 16px;
  transition: border-color var(--transition-fast);
}

.sidebar-link-item:hover {
  border-color: var(--color-accent);
}

.sidebar-link-title {
  font-size: 1rem;
  margin-bottom: 6px;
}

.sidebar-link-title a {
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.sidebar-link-desc {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0;
}

/* —— 底部回首页说明 —— */

.back-note {
  max-width: var(--container-width);
  margin: 48px auto 0;
  padding: 24px;
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.back-note-text {
  font-size: 0.95rem;
  margin: 0;
}

.back-home-link {
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  white-space: nowrap;
}

/* ==========================================================
   Pages — 题材专题（xmcm/zhuanti.html）
   ========================================================== */

/* —— 题材标签筛选器 —— */

.topic-filter {
  margin-bottom: 40px;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--color-card);
  padding: 16px;
}

.filter-btn {
  display: inline-block;
  background-color: transparent;
  border: 2px solid var(--color-border);
  border-radius: 999px;
  padding: 8px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  min-height: 44px;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.filter-btn:hover {
  background-color: var(--color-light-bg);
}

.filter-btn.is-active {
  background-color: var(--color-text);
  color: #FFFFFF;
  border-color: var(--color-text);
}

/* —— 专题主区 —— */

.featured-topic {
  margin-bottom: 56px;
}

.topic-layout {
  display: grid;
  grid-template-columns: 40% 60%;
  gap: 32px;
  align-items: start;
}

.topic-cover {
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  background-color: var(--color-card);
}

.topic-cover img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}

.topic-cover figcaption {
  padding: 12px 16px;
  font-size: 0.85rem;
  color: var(--color-muted);
  border-top: 2px solid var(--color-border);
}

.topic-list {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 24px;
}

.topic-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.topic-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.item-index {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.2;
  min-width: 40px;
}

.item-content {
  flex: 1;
}

.item-content h3 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.item-content p {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 6px;
}

.item-content a {
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* —— 编辑导语区 —— */

.editor-note {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 32px;
  margin-bottom: 56px;
}

.note-text {
  font-size: 1rem;
  line-height: var(--line-height-body);
  margin: 0;
}

.note-text a {
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* —— 更多专题推荐 —— */

.more-topics {
  margin-bottom: 48px;
}

.more-topics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 24px;
}

.more-topics-grid .topic-card {
  display: flex;
  flex-direction: column;
}

.more-topics-grid .topic-card figure {
  border-bottom: 2px solid var(--color-border);
}

.more-topics-grid .topic-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.more-topics-grid .topic-card h3 {
  padding: 20px 20px 0;
}

.more-topics-grid .topic-card p {
  padding: 8px 20px 0;
  flex-grow: 1;
}

.more-topics-grid .topic-card a {
  margin: 16px 20px 20px;
  font-weight: 600;
  align-self: flex-start;
}

.more-topics-grid .topic-card-solid h3 {
  padding-top: 32px;
}

.more-topics-grid .topic-card-solid a {
  margin-top: 24px;
}

/* ==========================================================
   Pages — 节目动态（xmcm/dongtai.html）
   ========================================================== */

.layout-right-aside {
  display: grid;
  grid-template-columns: 72% 28%;
  gap: 32px;
  align-items: start;
}

/* —— 上新说明列表 —— */

.update-section {
  margin-bottom: 56px;
}

.update-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 24px;
}

.update-item {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 20px 24px;
}

.update-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.update-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: 4px;
  padding: 2px 10px;
}

.update-date {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.update-title {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.update-summary {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.update-link {
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.update-figure {
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  margin-top: 24px;
  background-color: var(--color-card);
}

.update-hero-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.update-figure figcaption {
  padding: 12px 16px;
  font-size: 0.85rem;
  color: var(--color-muted);
  border-top: 2px solid var(--color-border);
}

/* —— 调整与指引变化 —— */

.adjust-section {
  margin-bottom: 48px;
}

.adjust-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

.adjust-item {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: 6px;
  padding: 16px 20px;
}

.adjust-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.adjust-type {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text);
  background-color: var(--color-light-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 2px 8px;
}

.adjust-date {
  font-size: 0.8rem;
  color: var(--color-muted);
}

.adjust-title {
  font-size: 1rem;
  margin-bottom: 6px;
}

.adjust-summary {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 0;
}

/* —— 更多动态 —— */

.more-updates {
  margin-bottom: 48px;
}

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

.more-link {
  display: inline-block;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* —— 常看入口 aside —— */

.content-aside {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 24px;
  position: sticky;
  top: 88px;
}

.aside-title {
  font-size: 1.1rem;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
}

.aside-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.aside-link {
  display: block;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 14px 16px;
  text-decoration: none;
  transition: border-color var(--transition-fast);
}

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

.aside-link-name {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 4px;
  color: var(--color-text);
}

.aside-link-desc {
  display: block;
  font-size: 0.85rem;
  color: var(--color-muted);
}

/* ==========================================================
   Pages — 观看指南（xmcm/guankan.html）
   ========================================================== */

/* —— 四任务组 —— */

.guide-task {
  display: grid;
  grid-template-columns: 40% 60%;
  gap: 32px;
  align-items: start;
  padding: 32px 0;
  border-bottom: 2px solid var(--color-border);
}

.guide-task:first-of-type {
  padding-top: 0;
}

.task-text {
  min-width: 0;
}

.task-title {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.task-desc {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin: 0;
}

.task-points {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 20px 24px;
  min-width: 0;
}

.task-points ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.task-points li {
  font-size: 0.95rem;
  line-height: var(--line-height-body);
}

.task-points strong {
  display: block;
  font-weight: 600;
  margin-bottom: 4px;
}

.task-points a {
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* —— 流程总览区 —— */

.guide-overview {
  padding: 48px 0;
  border-bottom: 2px solid var(--color-border);
}

.overview-title {
  font-size: 28px;
  margin-bottom: 24px;
}

.overview-figure {
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
  margin-bottom: 24px;
  background-color: var(--color-card);
}

.overview-image {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.overview-figure figcaption {
  padding: 12px 16px;
  font-size: 0.85rem;
  color: var(--color-muted);
  border-top: 2px solid var(--color-border);
}

.overview-steps {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 24px;
}

.steps-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.steps-list li {
  font-size: 0.95rem;
  font-weight: 500;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

/* —— 继续探索区 —— */

.guide-explore {
  padding: 48px 0;
}

.explore-title {
  font-size: 28px;
  margin-bottom: 24px;
}

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

.explore-link {
  display: block;
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 24px;
  text-decoration: none;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.explore-link:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  text-decoration: none;
}

.explore-link-title {
  display: block;
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--color-text);
}

.explore-link-desc {
  display: block;
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: var(--line-height-body);
}

/* ==========================================================
   Pages — 常见问题（xmcm/wenti.html）
   ========================================================== */

.faq-layout {
  display: grid;
  grid-template-columns: 28% 72%;
  gap: 32px;
  align-items: start;
}

/* —— 问题索引 —— */

.faq-index {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 24px;
  position: sticky;
  top: 88px;
}

.index-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
}

.index-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.index-list li {
  margin: 0;
}

.index-list a {
  display: block;
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: background-color var(--transition-fast);
}

.index-list a:hover {
  background-color: var(--color-light-bg);
}

/* —— 问答列表 —— */

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

.faq-group-title {
  font-size: 1.3rem;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-border);
}

.faq-item {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: 6px;
  margin-bottom: 12px;
}

.faq-item summary {
  padding: 16px 20px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--color-accent);
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

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

.faq-answer {
  padding: 0 20px 16px;
  border-top: 1px solid var(--color-border);
}

.faq-answer p {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin: 12px 0 0;
}

/* —— 继续探索引导 —— */

.faq-explore {
  margin-top: 48px;
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 32px;
}

.explore-content {
  display: grid;
  grid-template-columns: 40% 60%;
  gap: 32px;
  align-items: center;
}

.explore-figure {
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.explore-figure img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.explore-figure figcaption {
  padding: 8px 12px;
  font-size: 0.8rem;
  color: var(--color-muted);
  border-top: 2px solid var(--color-border);
}

.explore-links p {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.explore-link-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.explore-link-list li {
  margin: 0;
}

.explore-link-list a {
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ==========================================================
   Pages — 关于本站（xmcm/guanyu.html）
   ========================================================== */

/* —— 定位声明 —— */

.positioning-wrap {
  display: grid;
  grid-template-columns: 60% 40%;
  gap: 32px;
  align-items: center;
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 32px;
  margin-bottom: 48px;
}

.positioning-copy .section-title {
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.positioning-copy p {
  font-size: 1rem;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.positioning-figure {
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.positioning-figure img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.positioning-figure figcaption {
  padding: 8px 12px;
  font-size: 0.8rem;
  color: var(--color-muted);
  border-top: 2px solid var(--color-border);
}

/* —— 内容组织方式 —— */

.organization-section {
  margin-bottom: 48px;
}

.org-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 24px;
}

.org-item {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 24px;
}

.org-item h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.org-item p {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin-bottom: 12px;
}

.org-item a {
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* —— 核心模块设计缘由 —— */

.rationale-section {
  margin-bottom: 48px;
}

.rationale-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 24px;
  margin-top: 24px;
}

.rationale-item {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: 6px;
  padding: 20px;
}

.rationale-item dt {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 8px;
}

.rationale-item dd {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 0;
}

/* —— 内容边界 —— */

.boundary-section {
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 32px;
  margin-bottom: 48px;
}

.boundary-section p {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: 16px;
}

.boundary-list {
  list-style-position: inside;
  margin-bottom: 16px;
  padding-left: 8px;
}

.boundary-list li {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: 8px;
}

/* —— 继续探索 —— */

.explore-section {
  margin-bottom: 48px;
}

.explore-section .explore-links {
  margin-top: 24px;
}

/* ==========================================================
   Pages — 404（404.html）
   ========================================================== */

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

.error-panel {
  max-width: 560px;
  width: 100%;
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 48px 40px;
  text-align: center;
}

.error-code {
  font-size: 4rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
}

.error-panel h1 {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 1rem;
  color: var(--color-muted);
  margin-bottom: 32px;
}

.error-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.error-help {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 0;
}

.error-help a {
  font-weight: 600;
}

/* ==========================================================
   Responsive — 响应式断点（≤768px 手机端）
   ========================================================== */

@media (max-width: 768px) {
  /* —— 基础：字号与间距 —— */

  h1 {
    font-size: 28px;
  }

  h2 {
    font-size: 22px;
  }

  .site-main.inner-main {
    padding-bottom: 48px;
  }

  .inner-main > .breadcrumb,
  .inner-main > .page-header,
  .inner-main > .page-layout,
  .inner-main > .topic-filter,
  .inner-main > .featured-topic,
  .inner-main > .editor-note,
  .inner-main > .more-topics,
  .inner-main > .guide-task,
  .inner-main > .guide-overview,
  .inner-main > .guide-explore,
  .inner-main > .faq-layout,
  .inner-main > .faq-explore,
  .inner-main > .about-section,
  .inner-main > .related-links {
    padding-left: 16px;
    padding-right: 16px;
  }

  .header-inner {
    padding: 0 16px;
    min-height: 60px;
  }

  .page-header {
    padding-top: 16px;
    padding-bottom: 24px;
    margin-bottom: 32px;
  }

  .page-title {
    font-size: 28px;
  }

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

  /* —— 页头与导航 —— */

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-header-bg);
    border-bottom: 3px solid var(--color-accent);
    margin: 0;
    display: block;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    width: 100%;
    padding: 8px 16px 16px;
    gap: 4px;
  }

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

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

  .nav-list a {
    display: block;
    padding: 12px 16px;
    font-size: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .nav-list a.is-current {
    background-color: rgba(255, 255, 255, 0.18);
    border-bottom-color: var(--color-accent);
  }

  .lang-label {
    display: none;
  }

  /* —— 页脚 —— */

  .footer-inner {
    padding: 16px;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  .footer-divider {
    display: none;
  }

  .footer-nav {
    margin-left: 0;
    flex-wrap: wrap;
    margin-top: 8px;
  }

  /* ==========================================================
     首页（index.html）手机端
     ========================================================== */

  .hero-section {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 16px 32px;
  }

  .hero-section h1 {
    font-size: 28px;
  }

  .hero-lead {
    font-size: 1rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-figure img {
    height: 220px;
  }

  .status-card {
    left: 12px;
    bottom: 12px;
    max-width: 200px;
    padding: 10px 14px;
  }

  .status-card.status-next {
    bottom: 76px;
  }

  .audience-section {
    padding: 48px 16px;
  }

  .audience-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 24px;
  }

  .feature-section {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 0 16px 48px;
  }

  .feature-card figure img {
    height: 200px;
  }

  .secondary-section {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 0 16px 48px;
  }

  .news-section {
    padding: 0 16px 48px;
  }

  .news-header {
    align-items: flex-start;
    gap: 12px;
  }

  .news-item {
    grid-template-columns: 90px 1fr;
    gap: 12px;
  }

  .news-item time {
    grid-column: 2;
    grid-row: 2;
  }

  .topic-section {
    padding: 0 16px 48px;
  }

  .topic-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 24px;
  }

  .topic-card figure img {
    height: 200px;
  }

  .about-note {
    padding: 32px 16px 48px;
  }

  .related-links {
    padding: 0 16px 32px;
    flex-direction: column;
    align-items: flex-start;
  }

  /* ==========================================================
     内页通用：页面布局切换为单列
     ========================================================== */

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

  /* ==========================================================
     频道分类（pindao.html）手机端
     ========================================================== */

  .direction-item {
    padding: 16px;
  }

  .direction-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .task-path-figure {
    margin-bottom: 16px;
  }

  .path-figure img {
    height: 200px;
  }

  .sidebar {
    position: static;
    order: 2;
    margin-top: 24px;
  }

  .sidebar-links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 12px;
  }

  .sidebar-link-item {
    flex: 1 1 calc(50% - 12px);
    min-width: 140px;
  }

  .back-note {
    margin: 32px 16px 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 20px;
  }

  /* ==========================================================
     题材专题（zhuanti.html）手机端
     ========================================================== */

  .filter-bar {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 12px;
    gap: 8px;
  }

  .filter-btn {
    white-space: nowrap;
    flex-shrink: 0;
    padding: 8px 16px;
    font-size: 0.85rem;
  }

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

  .topic-cover img {
    height: 240px;
  }

  .topic-list {
    padding: 16px;
  }

  .topic-item {
    gap: 12px;
  }

  .item-index {
    font-size: 1.2rem;
    min-width: 32px;
  }

  .editor-note {
    padding: 24px;
  }

  .more-topics-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* ==========================================================
     节目动态（dongtai.html）手机端
     ========================================================== */

  .update-item,
  .adjust-item {
    padding: 16px;
  }

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

  .update-hero-image {
    height: 180px;
  }

  .content-aside {
    position: static;
    margin-top: 24px;
  }

  .aside-links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 12px;
  }

  .aside-link {
    flex: 1 1 calc(50% - 12px);
    min-width: 140px;
  }

  /* ==========================================================
     观看指南（guankan.html）手机端
     ========================================================== */

  .guide-task {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 24px 0;
  }

  .task-points {
    padding: 16px;
  }

  .overview-image {
    height: 200px;
  }

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

  .explore-links {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* ==========================================================
     常见问题（wenti.html）手机端
     ========================================================== */

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

  .faq-index {
    position: static;
    padding: 16px;
  }

  .index-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .index-list a {
    display: inline-block;
    padding: 6px 12px;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    font-size: 0.85rem;
  }

  .faq-group-title {
    font-size: 1.15rem;
  }

  .faq-item summary {
    padding: 14px 16px;
  }

  .faq-answer {
    padding: 0 16px 14px;
  }

  .faq-explore {
    padding: 24px;
  }

  .explore-content {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .explore-figure img {
    height: 180px;
  }

  /* ==========================================================
     关于本站（guanyu.html）手机端
     ========================================================== */

  .positioning-wrap {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 24px;
  }

  .positioning-figure img {
    height: 180px;
  }

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

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

  .boundary-section {
    padding: 24px;
  }

  /* ==========================================================
     404 手机端
     ========================================================== */

  .error-main {
    padding: 48px 16px;
  }

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

  .error-code {
    font-size: 3rem;
  }

  .error-actions {
    flex-direction: column;
  }

  .error-actions .btn {
    width: 100%;
  }
}

/* ==========================================================
   Responsive — 平板与桌面小屏（≤1024px）
   ========================================================== */

@media (max-width: 1024px) and (min-width: 769px) {
  .hero-section {
    gap: 32px;
    padding: 48px 24px 40px;
  }

  .hero-figure img {
    height: 260px;
  }

  .audience-grid {
    gap: 16px;
  }

  .topic-grid {
    gap: 16px;
  }

  .page-layout,
  .layout-right-aside {
    grid-template-columns: 68% 32%;
    gap: 24px;
  }

  .faq-layout {
    grid-template-columns: 32% 68%;
    gap: 24px;
  }

  .topic-layout {
    grid-template-columns: 38% 62%;
    gap: 24px;
  }

  .guide-task {
    grid-template-columns: 38% 62%;
    gap: 24px;
  }

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

  .positioning-wrap {
    grid-template-columns: 55% 45%;
    gap: 24px;
  }

  .explore-content {
    grid-template-columns: 40% 60%;
    gap: 24px;
  }
}

/* ==========================================================
   Motion — 动效增强（不阻塞初始可见性）
   ========================================================== */

@media (prefers-reduced-motion: no-preference) {
  .path-card,
  .topic-card,
  .feature-card,
  .direction-item,
  .update-item,
  .adjust-item {
    transition: transform var(--transition-fast), border-color var(--transition-fast);
  }

  .path-card:hover,
  .topic-card:hover,
  .feature-card:hover,
  .direction-item:hover,
  .update-item:hover,
  .adjust-item:hover {
    transform: translateY(-2px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* 程序验收反馈：移动端正文优先 */
@media (max-width: 768px) {
  .site-main :is(.page-content, .main-content, .content-main) {
    order: 1;
  }

  .site-main :is(aside, .sidebar) {
    order: 2;
  }
}