/* ============================================================
   51吃瓜网在线 · 全站样式表
   设计方向：低饱和多彩风 / 资讯内容站
   基础色彩：#f5f5f5 #333333 #666666 #d9a441 #4a7ba6 #e8e8e8
   内容宽度：1200px / 移动断点：768px
   ============================================================ */

/* ------------------------------------------------------------
   1. Base —— 基础重置、字体、色彩、通用元素
   ------------------------------------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #333333;
  background-color: #f5f5f5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: #4a7ba6;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #3a6588;
  text-decoration: underline;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  color: #333333;
  line-height: 1.4;
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  color: #333333;
}

time {
  color: #666666;
  font-size: 14px;
}

/* 通用容器 */
.site-header,
.site-main,
.site-footer {
  width: 100%;
}

/* ------------------------------------------------------------
   2. Layout —— 全站统一外壳
   ------------------------------------------------------------ */

/* 页头 */
.site-header {
  background: #ffffff;
  border-bottom: 1px solid #e8e8e8;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* 品牌 */
.brand-logo {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-shrink: 0;
  text-decoration: none;
}

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

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: #333333;
  letter-spacing: 0.02em;
  line-height: 1.2;
}

.brand-slogan {
  font-size: 12px;
  color: #666666;
  line-height: 1.2;
}

/* 主导航 */
.site-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-list li {
  position: relative;
}

.nav-list a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  color: #333333;
  border-radius: 4px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-list a:hover {
  background: #f5f5f5;
  color: #4a7ba6;
  text-decoration: none;
}

.nav-list a.is-current {
  color: #d9a441;
  font-weight: 700;
  background: #faf6ee;
}

/* 移动端导航按钮（默认隐藏） */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  flex-direction: column;
  gap: 5px;
  align-items: center;
  justify-content: center;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: #333333;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* 页脚 */
.site-footer {
  background: #ffffff;
  border-top: 1px solid #e8e8e8;
  margin-top: 64px;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 24px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #333333;
  line-height: 1.3;
}

.footer-desc {
  font-size: 14px;
  color: #666666;
  line-height: 1.6;
  max-width: 360px;
}

.footer-nav,
.footer-help {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-heading {
  font-size: 14px;
  font-weight: 700;
  color: #333333;
  margin-bottom: 4px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  font-size: 14px;
  color: #666666;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #4a7ba6;
}

.footer-copy {
  grid-column: 1 / -1;
  border-top: 1px solid #e8e8e8;
  padding-top: 20px;
  margin-top: 8px;
}

.footer-copy p {
  font-size: 13px;
  color: #999999;
  text-align: center;
}

/* 主内容区 */
.site-main {
  min-height: 60vh;
}

.inner-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 24px 0 16px;
  font-size: 14px;
  color: #666666;
}

.breadcrumb a {
  color: #4a7ba6;
}

.breadcrumb a:hover {
  color: #3a6588;
  text-decoration: underline;
}

.breadcrumb-sep {
  color: #999999;
  display: inline-block;
}

.breadcrumb-current {
  color: #666666;
  font-weight: 500;
}

/* 页面标题区 */
.page-header {
  padding: 16px 0 32px;
  border-bottom: 1px solid #e8e8e8;
  margin-bottom: 40px;
}

.page-title {
  font-size: 32px;
  font-weight: 700;
  color: #333333;
  line-height: 1.3;
  margin-bottom: 12px;
}

.page-description {
  font-size: 16px;
  color: #666666;
  line-height: 1.7;
  max-width: 720px;
}

/* 通用区块标题 */
.section-title,
.section-heading {
  font-size: 24px;
  font-weight: 700;
  color: #333333;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid #e8e8e8;
  position: relative;
}

.section-title::after,
.section-heading::after {
  content: "";
  display: block;
  width: 48px;
  height: 2px;
  background: #d9a441;
  position: absolute;
  bottom: -2px;
  left: 0;
}

.section-intro {
  font-size: 15px;
  color: #666666;
  line-height: 1.7;
  margin-bottom: 24px;
}

/* 通用卡片圆角 */
.channel-card,
.topic-card,
.focus-card,
.sidebar-card,
.pick-item,
.viewpoint-card,
.mistake-item {
  border-radius: 8px;
}

/* ------------------------------------------------------------
   3. Components —— 全站通用组件
   ------------------------------------------------------------ */

/* 按钮 */
.btn-primary {
  display: inline-block;
  padding: 12px 28px;
  background: #d9a441;
  color: #ffffff;
  font-size: 16px;
  font-weight: 700;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease;
  text-decoration: none;
}

.btn-primary:hover {
  background: #c89436;
  color: #ffffff;
  text-decoration: none;
  transform: translateY(-1px);
}

/* 公告栏 */
.notice-bar {
  background: #333333;
  color: #ffffff;
  padding: 10px 0;
}

.notice-text {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  font-size: 14px;
  line-height: 1.6;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.notice-text::before {
  content: "◆";
  color: #d9a441;
  font-size: 12px;
  flex-shrink: 0;
}

/* 侧栏 */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-card {
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 24px;
}

.sidebar-card h2 {
  font-size: 18px;
  font-weight: 700;
  color: #333333;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid #e8e8e8;
}

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

.update-list li {
  padding-bottom: 10px;
  border-bottom: 1px solid #f0f0f0;
}

.update-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.update-list a {
  font-size: 14px;
  color: #333333;
  line-height: 1.5;
  display: block;
}

.update-list a:hover {
  color: #4a7ba6;
}

/* 来源说明 */
.source-note {
  max-width: 1200px;
  margin: 48px auto 0;
  padding: 32px 24px;
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
}

.source-note .section-title {
  margin-bottom: 16px;
}

.source-text {
  font-size: 14px;
  color: #666666;
  line-height: 1.7;
  margin-bottom: 12px;
}

.source-link {
  margin-top: 12px;
}

.source-link a {
  font-size: 14px;
  color: #4a7ba6;
  text-decoration: underline;
}

/* 图片容器约束 */
.hero-media img,
.focus-card img,
.topic-card img,
.channel-card img,
.topic-card-media img,
.guide-figure img,
.media-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

/* 首屏焦点区 */
.hero-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: flex-start;
}

.hero-content h1 {
  font-size: 32px;
  font-weight: 700;
  color: #333333;
  line-height: 1.3;
  margin: 0;
}

.hero-lead {
  font-size: 16px;
  color: #666666;
  line-height: 1.7;
  margin: 0;
}

.hero-cta {
  margin-top: 8px;
}

.hero-media {
  border-radius: 8px;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: #e8e8e8;
}

/* 焦点报道 */
.focus-report {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px;
}

.focus-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.focus-card {
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.focus-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

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

.focus-body {
  padding: 20px;
}

.focus-name {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.focus-name a {
  color: #333333;
}

.focus-name a:hover {
  color: #4a7ba6;
}

.focus-desc {
  font-size: 14px;
  color: #666666;
  line-height: 1.6;
}

/* 频道分类导航带 */
.channel-strip {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px;
}

.channel-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.channel-tag {
  display: inline-block;
  padding: 10px 20px;
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 6px;
  font-size: 15px;
  color: #333333;
  transition: all 0.2s ease;
}

.channel-tag:hover {
  background: #faf6ee;
  border-color: #d9a441;
  color: #d9a441;
  text-decoration: none;
}

/* 最新资讯列表 */
.latest-news {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px;
}

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

.news-item {
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.news-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.news-card {
  padding: 20px 24px;
}

.news-headline {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
}

.news-headline a {
  color: #333333;
}

.news-headline a:hover {
  color: #4a7ba6;
}

.news-summary {
  font-size: 14px;
  color: #666666;
  line-height: 1.6;
  margin-bottom: 8px;
}

.news-date {
  font-size: 13px;
  color: #999999;
}

/* 专题推荐区 */
.featured-topics {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px;
}

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

.topic-card {
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.topic-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

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

.topic-card h3 {
  padding: 16px 20px 0;
}

.topic-name {
  font-size: 18px;
  font-weight: 700;
  padding: 16px 20px 0;
}

.topic-name a {
  color: #333333;
}

.topic-name a:hover {
  color: #4a7ba6;
}

.topic-desc {
  font-size: 14px;
  color: #666666;
  line-height: 1.6;
  padding: 8px 20px 20px;
}

/* 编辑推荐 */
.editor-picks {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px;
}

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

.pick-item {
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 20px 24px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.pick-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.pick-rank {
  font-size: 24px;
  font-weight: 700;
  color: #d9a441;
  line-height: 1;
  flex-shrink: 0;
  min-width: 32px;
}

.pick-body {
  flex: 1;
}

.pick-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 6px;
}

.pick-title a {
  color: #333333;
}

.pick-title a:hover {
  color: #4a7ba6;
}

.pick-reason {
  font-size: 14px;
  color: #666666;
  line-height: 1.6;
}

/* ------------------------------------------------------------
   5. Pages —— 内页通用布局
   ------------------------------------------------------------ */

/* 侧栏布局：侧栏在前，主内容在后 */
.layout-shell.sidebar-left {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 40px;
  padding: 0 0 48px;
}

.layout-shell.sidebar-left .main-content {
  min-width: 0;
  order: 2;
}

.layout-shell.sidebar-left .page-sidebar,
.layout-shell.sidebar-left .sidebar {
  order: 1;
  min-width: 0;
}

/* 主内容列宽保护 */
.main-content {
  min-width: 0;
}

.main-content .breadcrumb {
  padding-top: 24px;
}

/* ------------------------------------------------------------
   6. Pages —— 频道分类页 (pindao.html)
   ------------------------------------------------------------ */

.channel-index {
  margin-bottom: 48px;
}

.channel-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.channel-card {
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.channel-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

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

.channel-card-body {
  padding: 20px;
}

.channel-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.channel-card-body p {
  font-size: 14px;
  color: #666666;
  line-height: 1.6;
}

.channel-descriptions {
  margin-top: 48px;
}

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

.desc-item {
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 20px 24px;
}

.desc-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.desc-item p {
  font-size: 14px;
  color: #666666;
  line-height: 1.6;
  margin-bottom: 8px;
}

.desc-item a {
  font-size: 14px;
  color: #4a7ba6;
  font-weight: 500;
}

/* ------------------------------------------------------------
   7. Pages —— 内容专题页 (zhuanti.html)
   ------------------------------------------------------------ */

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

.topic-card-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.topic-card-media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #e8e8e8;
}

.topic-card-body {
  padding: 20px;
}

.topic-card-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.topic-card-title a {
  color: #333333;
}

.topic-card-title a:hover {
  color: #4a7ba6;
}

.topic-card-summary {
  font-size: 14px;
  color: #666666;
  line-height: 1.6;
  margin-bottom: 12px;
}

.topic-card-link {
  font-size: 14px;
  color: #4a7ba6;
  font-weight: 500;
}

.topic-detail-section {
  margin-bottom: 48px;
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 32px;
}

.topic-detail-content {
  max-width: 720px;
}

.topic-detail-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.topic-detail-paragraph {
  font-size: 15px;
  color: #333333;
  line-height: 1.8;
  margin-bottom: 16px;
}

.topic-detail-subtitle {
  font-size: 18px;
  font-weight: 700;
  margin: 24px 0 12px;
}

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

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

.related-reading-item {
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.related-reading-item a {
  font-size: 15px;
  font-weight: 600;
  color: #333333;
}

.related-reading-item a:hover {
  color: #4a7ba6;
}

.related-reading-desc {
  font-size: 13px;
  color: #666666;
  line-height: 1.5;
}

/* ------------------------------------------------------------
   8. Pages —— 实用指南页 (zhinan.html)
   ------------------------------------------------------------ */

.page-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  color: #333333;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid #e8e8e8;
}

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

.sidebar-list a {
  font-size: 14px;
  color: #666666;
  padding: 6px 0;
  display: block;
  line-height: 1.5;
  border-bottom: 1px solid #f5f5f5;
}

.sidebar-list a:hover {
  color: #4a7ba6;
}

.sidebar-related {
  margin-top: 8px;
}

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

.guide-section h2 {
  font-size: 22px;
  font-weight: 700;
  color: #333333;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid #e8e8e8;
  position: relative;
}

.guide-section h2::after {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  background: #d9a441;
  position: absolute;
  bottom: -1px;
  left: 0;
}

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

.step-item {
  counter-increment: step-counter;
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 24px;
  position: relative;
  padding-left: 80px;
}

.step-item::before {
  content: counter(step-counter, decimal-leading-zero);
  position: absolute;
  left: 20px;
  top: 24px;
  font-size: 24px;
  font-weight: 700;
  color: #d9a441;
  line-height: 1;
}

.step-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.step-item p {
  font-size: 15px;
  color: #666666;
  line-height: 1.7;
}

.guide-figure {
  margin: 24px 0 48px;
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  overflow: hidden;
}

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

.guide-figure figcaption {
  padding: 12px 20px;
  font-size: 13px;
  color: #666666;
  background: #fafafa;
  border-top: 1px solid #e8e8e8;
}

/* 常见误区 */
.mistake-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.mistake-item {
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 20px;
}

.mistake-item h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #c0392b;
}

.mistake-item p {
  font-size: 14px;
  color: #666666;
  line-height: 1.6;
}

/* 工具推荐 */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.tool-card {
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 20px;
}

.tool-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.tool-card p {
  font-size: 14px;
  color: #666666;
  line-height: 1.6;
}

/* 延伸阅读 */
.guide-related {
  margin-top: 48px;
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 24px;
}

.guide-related h2 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-links a {
  display: inline-block;
  padding: 8px 16px;
  background: #f5f5f5;
  border-radius: 4px;
  font-size: 14px;
  color: #4a7ba6;
}

.related-links a:hover {
  background: #e8e8e8;
  text-decoration: none;
}

/* ------------------------------------------------------------
   9. Pages —— 长尾主题页 (changwei.html)
   ------------------------------------------------------------ */

/* 时间线 */
.timeline-section {
  margin-bottom: 48px;
}

.timeline-list {
  position: relative;
  padding-left: 0;
  max-width: 720px;
}

.timeline-list::before {
  content: "";
  position: absolute;
  left: 140px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #e8e8e8;
}

.timeline-item {
  position: relative;
  padding: 0 0 32px 160px;
  display: flex;
  gap: 24px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 134px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #d9a441;
  border: 2px solid #ffffff;
  box-shadow: 0 0 0 2px #d9a441;
  z-index: 1;
}

.timeline-date {
  position: absolute;
  left: 0;
  top: 0;
  font-size: 14px;
  font-weight: 700;
  color: #4a7ba6;
  width: 120px;
  text-align: right;
  line-height: 1.5;
}

.timeline-content {
  flex: 1;
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 20px 24px;
}

.timeline-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.timeline-content p {
  font-size: 14px;
  color: #666666;
  line-height: 1.6;
}

.media-figure {
  margin: 24px 0 48px;
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  overflow: hidden;
  max-width: 720px;
}

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

.media-figure figcaption {
  padding: 12px 20px;
  font-size: 13px;
  color: #666666;
  background: #fafafa;
  border-top: 1px solid #e8e8e8;
}

/* 各方观点 */
.viewpoints-section {
  margin-bottom: 48px;
}

.viewpoint-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.viewpoint-card {
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 24px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.viewpoint-text {
  font-size: 14px;
  color: #333333;
  line-height: 1.7;
  font-style: normal;
}

.viewpoint-source {
  font-size: 13px;
  color: #666666;
  font-style: normal;
  padding-top: 12px;
  border-top: 1px solid #e8e8e8;
}

/* 来源说明 */
.source-section {
  margin-bottom: 48px;
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 8px;
  padding: 32px;
}

.source-text {
  font-size: 14px;
  color: #666666;
  line-height: 1.7;
  margin-bottom: 12px;
}

.source-note {
  font-size: 13px;
  color: #999999;
  line-height: 1.6;
}

/* 延伸阅读 */
.related-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.related-list a {
  display: inline-block;
  padding: 8px 16px;
  background: #ffffff;
  border: 1px solid #e8e8e8;
  border-radius: 4px;
  font-size: 14px;
  color: #4a7ba6;
}

.related-list a:hover {
  background: #f5f5f5;
  text-decoration: none;
}

/* ------------------------------------------------------------
   10. Pages —— 404 错误页
   ------------------------------------------------------------ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 70vh;
  padding: 48px 24px;
}

.error-section {
  text-align: center;
  max-width: 560px;
  width: 100%;
}

.error-code {
  font-size: 96px;
  font-weight: 700;
  color: #d9a441;
  line-height: 1;
  margin-bottom: 16px;
}

.error-section h1 {
  font-size: 28px;
  font-weight: 700;
  color: #333333;
  margin-bottom: 16px;
}

.error-desc {
  font-size: 16px;
  color: #666666;
  line-height: 1.7;
  margin-bottom: 32px;
}

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

.btn-back,
.btn-channel {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.btn-back {
  background: #d9a441;
  color: #ffffff;
}

.btn-back:hover {
  background: #c89436;
  color: #ffffff;
  text-decoration: none;
}

.btn-channel {
  background: #ffffff;
  color: #4a7ba6;
  border: 1px solid #4a7ba6;
}

.btn-channel:hover {
  background: #f0f5fa;
  text-decoration: none;
}

.error-tip {
  font-size: 13px;
  color: #999999;
}

/* ------------------------------------------------------------
   11. Responsive —— 响应式
   ------------------------------------------------------------ */

/* 平板及以下 */
@media (max-width: 1024px) {
  .layout-shell.sidebar-left {
    grid-template-columns: 260px 1fr;
    gap: 24px;
  }

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

/* 移动端断点 */
@media (max-width: 768px) {
  /* 页头 */
  .header-inner {
    height: 64px;
    padding: 0 16px;
    gap: 16px;
  }

  .brand-name {
    font-size: 18px;
  }

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

  /* 导航栏 */
  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .site-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid #e8e8e8;
    margin-left: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
    display: none;
  }

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

  .nav-list li {
    border-bottom: 1px solid #f0f0f0;
  }

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

  .nav-list a {
    padding: 14px 24px;
    font-size: 16px;
    border-radius: 0;
  }

  .nav-list a.is-current {
    background: #faf6ee;
  }

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

  .footer-copy {
    grid-column: 1;
  }

  /* 面包屑 */
  .breadcrumb {
    padding: 16px 0 12px;
    font-size: 13px;
  }

  /* 页面标题 */
  .page-header {
    padding: 12px 0 24px;
    margin-bottom: 24px;
  }

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

  .page-description {
    font-size: 15px;
  }

  /* 首页 */
  .hero-section {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 16px 32px;
  }

  .hero-content {
    order: 1;
  }

  .hero-media {
    order: 2;
  }

  .hero-content h1 {
    font-size: 26px;
  }

  .focus-report,
  .channel-strip,
  .latest-news,
  .featured-topics,
  .editor-picks {
    padding: 32px 16px;
  }

  .focus-grid,
  .topic-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .channel-tag-list {
    gap: 8px;
  }

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

  .news-card {
    padding: 16px;
  }

  .pick-item {
    padding: 16px;
    gap: 12px;
  }

  .pick-rank {
    font-size: 20px;
    min-width: 24px;
  }

  /* 内页布局 */
  .layout-shell.sidebar-left {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .layout-shell.sidebar-left .main-content {
    order: 1;
  }

  .layout-shell.sidebar-left .page-sidebar,
  .layout-shell.sidebar-left .sidebar {
    order: 2;
    margin-top: 32px;
  }

  /* 频道页 */
  .channel-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  /* 专题页 */
  .topic-card-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .topic-detail-section {
    padding: 20px;
  }

  /* 指南页 */
  .step-item {
    padding: 16px;
    padding-left: 56px;
  }

  .step-item::before {
    left: 16px;
    top: 16px;
    font-size: 20px;
  }

  .mistake-list,
  .tool-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  /* 长尾主题页 */
  .timeline-list::before {
    left: 24px;
  }

  .timeline-item {
    padding: 0 0 24px 48px;
  }

  .timeline-item::before {
    left: 18px;
  }

  .timeline-date {
    position: static;
    width: auto;
    text-align: left;
    margin-bottom: 8px;
    font-size: 13px;
  }

  .timeline-content {
    padding: 16px;
  }

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

  .source-section {
    padding: 20px;
  }

  /* 404 */
  .error-code {
    font-size: 72px;
  }

  .error-section h1 {
    font-size: 24px;
  }

  .error-actions {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  .btn-back,
  .btn-channel {
    width: 100%;
    max-width: 280px;
    text-align: center;
  }

  /* 来源说明 */
  .source-note {
    margin: 32px 16px 0;
    padding: 24px 20px;
  }
}

/* 小屏手机适配 */
@media (max-width: 480px) {
  .header-inner {
    padding: 0 12px;
  }

  .brand-slogan {
    display: none;
  }

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

  .hero-section {
    padding: 24px 16px;
  }

  .hero-cta .btn-primary {
    width: 100%;
    text-align: center;
  }

  .news-headline {
    font-size: 16px;
  }

  .pick-item {
    flex-direction: column;
    gap: 8px;
  }

  .pick-rank {
    min-width: auto;
  }
}