/* ==========================================================================
   吃瓜官网 全站样式表
   农业产地风：绿色主调、黄色点缀、朴实字体
   ========================================================================== */

/* ==========================================================================
   Base —— 变量、重置、全局基础
   ========================================================================== */

:root {
  --color-primary: #2d5a27;
  --color-primary-dark: #1f401b;
  --color-primary-light: #3a7233;
  --color-accent: #f5c542;
  --color-accent-dark: #d9a820;
  --color-bg: #f5f0e6;
  --color-bg-light: #faf7f0;
  --color-surface: #ffffff;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-muted: #8a8a7a;
  --color-border: #e0d8c8;
  --color-border-light: #ebe5d8;

  --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;

  --container-width: 1200px;
  --container-padding: 24px;

  --header-height: 72px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);

  --transition-base: 0.2s ease;
}

*,
*::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: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary-light);
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text);
}

h1 {
  font-size: 28px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 1em;
}

time {
  color: var(--color-text-muted);
  font-size: 14px;
}

/* ==========================================================================
   Layout —— 页头、页脚、主容器、面包屑、页面标题
   ========================================================================== */

/* ---- 页头 ---- */

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

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

.brand-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-shrink: 0;
}

.brand-link:hover {
  opacity: 0.9;
}

.brand-name {
  font-size: 24px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 1px;
}

.brand-tag {
  font-size: 13px;
  color: var(--color-accent);
  border: 1px solid rgba(245, 197, 66, 0.5);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  white-space: nowrap;
}

/* ---- 主导航 ---- */

.site-nav {
  display: flex;
  align-items: center;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #ffffff;
  border-radius: 1px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

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

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

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

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

.nav-list li a {
  display: block;
  padding: 8px 16px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base),
    color var(--transition-base);
}

.nav-list li a:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.1);
}

.nav-list li a.is-current {
  color: var(--color-primary);
  background-color: var(--color-accent);
  font-weight: 600;
}

/* ---- 主容器 ---- */

.site-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.home-main {
  padding-top: 32px;
  padding-bottom: 48px;
}

.inner-main {
  padding-top: 24px;
  padding-bottom: 48px;
}

/* ---- 面包屑 ---- */

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

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

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

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

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

/* ---- 页面标题区 ---- */

.page-header {
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--color-border-light);
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.page-description {
  font-size: 16px;
  color: var(--color-text-light);
  line-height: 1.7;
  max-width: 780px;
}

/* ---- 页脚 ---- */

.site-footer {
  background-color: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.8);
  margin-top: 16px;
}

.footer-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 40px var(--container-padding) 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 8px;
}

.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background-color: var(--color-accent);
}

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  transition: color var(--transition-base);
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 16px var(--container-padding) 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer-copy {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 4px;
}

.footer-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 0;
}

/* ---- 通用区块标题 ---- */

.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 20px;
  position: relative;
  padding-left: 14px;
}

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

/* ---- 通用文字链接 ---- */

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base);
}

.text-link:hover {
  color: var(--color-primary-light);
  border-bottom-color: var(--color-primary-light);
}

.text-link span {
  font-size: 12px;
}

/* ---- 更多链接 ---- */

.more-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
  margin-top: 16px;
  padding: 6px 14px;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base),
    color var(--transition-base);
}

.more-link:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}

.more-link span {
  font-size: 12px;
}

/* ==========================================================================
   Components —— 卡片、列表、标签、侧栏等通用组件
   ========================================================================== */

/* ---- 焦点报道（首页） ---- */

.focus-report {
  margin-bottom: 40px;
}

.focus-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border-light);
}

.focus-media {
  min-height: 320px;
}

.focus-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.focus-content {
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
}

.focus-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.5;
}

.focus-summary {
  color: var(--color-text-light);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 0;
}

.focus-content .text-link {
  align-self: flex-start;
  margin-top: 8px;
  font-size: 15px;
}

/* ---- 频道标签带（首页） ---- */

.channel-nav-section {
  margin-bottom: 40px;
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--color-border-light);
}

.channel-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.channel-tag {
  display: inline-block;
  padding: 8px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-primary);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  transition: background-color var(--transition-base),
    color var(--transition-base), border-color var(--transition-base);
}

.channel-tag:hover {
  background-color: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.channel-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 0;
  line-height: 1.7;
}

/* ---- 最新资讯列表（首页） ---- */

.latest-news-section {
  margin-bottom: 40px;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
}

.news-item {
  padding: 20px 28px;
  border-bottom: 1px solid var(--color-border-light);
  transition: background-color var(--transition-base);
}

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

.news-item:hover {
  background-color: var(--color-bg-light);
}

.news-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
}

.news-title a {
  color: var(--color-text);
}

.news-title a:hover {
  color: var(--color-primary);
}

.news-excerpt {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 8px;
  line-height: 1.7;
}

.news-item time {
  font-size: 13px;
}

/* ---- 专题卡片（首页 + 专题页共用） ---- */

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

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

.topic-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base),
    transform var(--transition-base);
}

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

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

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

.topic-title,
.topic-card-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
}

.topic-title a,
.topic-card-title a {
  color: var(--color-text);
}

.topic-title a:hover,
.topic-card-title a:hover {
  color: var(--color-primary);
}

.topic-excerpt,
.topic-card-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.topic-count {
  font-size: 13px;
  color: var(--color-primary);
  background-color: var(--color-bg);
  padding: 3px 10px;
  border-radius: 999px;
  display: inline-block;
}

/* ---- 编辑推荐（首页 + 深度解读页共用） ---- */

.editor-picks-section {
  margin-bottom: 40px;
}

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

.pick-item {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--color-border-light);
  border-left: 3px solid var(--color-accent);
  transition: box-shadow var(--transition-base);
}

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

.pick-title,
.pick-headline {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.5;
}

.pick-title a,
.pick-headline a {
  color: var(--color-text);
}

.pick-title a:hover,
.pick-headline a:hover {
  color: var(--color-primary);
}

.pick-meta {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* ---- 来源与反馈（首页） ---- */

.source-feedback-section {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--color-border-light);
  margin-bottom: 8px;
}

.source-text {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.feedback-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

/* ---- 频道卡片（频道分类页） ---- */

.channel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.channel-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base),
    transform var(--transition-base);
}

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

.channel-media {
  height: 160px;
  overflow: hidden;
}

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

.channel-body {
  padding: 20px;
}

.channel-name {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.channel-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.channel-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary);
}

.channel-link:hover {
  color: var(--color-primary-light);
}

/* ---- 频道介绍区块 ---- */

.channel-intro {
  margin-bottom: 8px;
}

.intro-block {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--color-border-light);
  margin-bottom: 16px;
}

.intro-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.intro-text {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 0;
}

/* ---- 专题列表页 ---- */

.topic-list-section {
  margin-bottom: 40px;
}

.section-intro {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 24px;
}

.topic-article-list {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border-light);
}

.topic-article-list li {
  font-size: 14px;
  color: var(--color-text-light);
  padding: 6px 0;
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}

.topic-article-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

/* ---- 专题概览 ---- */

.topic-overview-section {
  margin-bottom: 40px;
}

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

.overview-item {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--color-border-light);
}

.overview-item-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.overview-item-text {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ---- 专题相关链接 ---- */

.topic-related-section {
  margin-bottom: 8px;
}

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

.related-links a {
  display: inline-block;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--color-primary);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base),
    color var(--transition-base);
}

.related-links a:hover {
  background-color: var(--color-primary);
  color: #ffffff;
}

/* ---- 最新资讯页布局 ---- */

.page-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 32px;
  align-items: start;
}

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

.latest-list-section {
  margin-bottom: 40px;
}

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

.latest-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  overflow: hidden;
}

.latest-item {
  display: flex;
  gap: 20px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border-light);
  transition: background-color var(--transition-base);
}

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

.latest-item:hover {
  background-color: var(--color-bg-light);
}

.latest-thumb {
  width: 140px;
  height: 90px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background-color: var(--color-bg);
}

.latest-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.latest-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.latest-title a {
  color: var(--color-text);
}

.latest-title a:hover {
  color: var(--color-primary);
}

.latest-excerpt {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.latest-meta {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ---- 时间排序说明 ---- */

.time-sort-section {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--color-border-light);
  margin-bottom: 8px;
}

.sort-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

.sort-desc:last-child {
  margin-bottom: 0;
}

/* ---- 侧栏（最新资讯页） ---- */

.layout-aside {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.aside-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--color-border-light);
}

.aside-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-border-light);
}

.aside-links li {
  margin-bottom: 10px;
}

.aside-links a {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.5;
  display: block;
  padding: 4px 0;
}

.aside-links a:hover {
  color: var(--color-primary);
}

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

/* ---- 深度解读页布局 ---- */

.layout-shell {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 32px;
  align-items: start;
}

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

/* ---- 深度解读侧栏 ---- */

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sidebar-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1px solid var(--color-border-light);
}

.sidebar-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-border-light);
}

.sidebar-list li {
  margin-bottom: 10px;
  padding-left: 14px;
  position: relative;
}

.sidebar-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 5px;
  height: 5px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.sidebar-list a {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.5;
}

.sidebar-list a:hover {
  color: var(--color-primary);
}

/* ---- 编辑推荐（深度解读页） ---- */

.editor-picks {
  margin-bottom: 40px;
}

.pick-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pick-text {
  flex: 1;
}

.pick-excerpt {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 0;
}

.pick-media {
  margin-top: 4px;
}

.pick-media img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

/* ---- 深度解读文章块 ---- */

.analysis-articles {
  margin-bottom: 40px;
}

.analysis-block {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--color-border-light);
  margin-bottom: 16px;
}

.block-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}

.analysis-block p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

.analysis-block .text-link {
  margin-top: 4px;
}

/* ---- 延伸阅读 ---- */

.more-reading {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--color-border-light);
  margin-bottom: 8px;
}

.more-reading p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 0;
}

.more-reading a {
  display: inline-block;
  margin-right: 16px;
  margin-top: 8px;
  font-size: 14px;
  color: var(--color-primary);
  border-bottom: 1px solid transparent;
}

.more-reading a:hover {
  border-bottom-color: var(--color-primary);
}

/* ---- 阅读指南页 ---- */

.guide-section {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--color-border-light);
  margin-bottom: 24px;
}

.guide-content {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 24px;
  align-items: start;
}

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

.guide-text p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

.guide-text p:last-child {
  margin-bottom: 0;
}

.guide-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border-light);
}

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

/* ---- FAQ ---- */

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

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-light);
  overflow: hidden;
}

.faq-item summary {
  padding: 14px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 40px;
  transition: color var(--transition-base);
}

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

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-primary);
  font-weight: 400;
  transition: transform var(--transition-base);
}

.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

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

.faq-item p {
  padding: 0 20px 14px;
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 0;
}

.faq-item p a {
  color: var(--color-primary);
  border-bottom: 1px solid transparent;
}

.faq-item p a:hover {
  border-bottom-color: var(--color-primary);
}

/* ---- 404 页面 ---- */

.error-main {
  padding-top: 48px;
  padding-bottom: 64px;
}

.error-section {
  text-align: center;
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  border: 1px solid var(--color-border-light);
  margin-bottom: 32px;
}

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 8px;
}

.error-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}

.error-desc {
  font-size: 15px;
  color: var(--color-text-light);
  margin-bottom: 24px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.error-btn {
  display: inline-block;
  padding: 10px 28px;
  font-size: 15px;
  font-weight: 500;
  color: #ffffff;
  background-color: var(--color-primary);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-base);
}

.error-btn:hover {
  background-color: var(--color-primary-light);
  color: #ffffff;
}

.error-links {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--color-border-light);
}

.error-subtitle {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 16px;
}

.error-nav {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.error-nav a {
  font-size: 15px;
  color: var(--color-primary);
  padding: 6px 12px;
  border-bottom: 1px solid transparent;
}

.error-nav a:hover {
  border-bottom-color: var(--color-primary);
}

/* ==========================================================================
   Pages —— 页面级微调（仅业务模块，不改全局骨架）
   ========================================================================== */

/* ---- 首页 ---- */

.site-home .section-title {
  margin-bottom: 20px;
}

/* ---- 频道分类页 ---- */

.page-channels .channel-grid {
  margin-bottom: 40px;
}

/* ---- 专题页 ---- */

.page-topics .topic-grid {
  margin-bottom: 40px;
}

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

.page-topics .topic-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.page-topics .topic-article-list {
  margin-top: auto;
}

/* ---- 指南页 ---- */

.page-guide .guide-section:last-child {
  margin-bottom: 8px;
}

/* ---- 404 ---- */

.site-error .site-main {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* ==========================================================================
   Responsive —— 响应式断点
   ========================================================================== */

/* ---- 平板（≤1024px） ---- */

@media (max-width: 1024px) {
  .header-shell {
    gap: 16px;
  }

  .brand-tag {
    display: none;
  }

  .nav-list li a {
    padding: 8px 12px;
    font-size: 14px;
  }

  .focus-card {
    grid-template-columns: 1fr;
  }

  .focus-media {
    min-height: 240px;
    max-height: 340px;
  }

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

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

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

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

  .layout-aside,
  .sidebar {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .guide-content {
    grid-template-columns: 1fr;
  }

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

/* ---- 手机（≤768px） ---- */

@media (max-width: 768px) {
  :root {
    --container-padding: 16px;
    --header-height: 60px;
  }

  .header-shell {
    position: relative;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background-color: var(--color-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    opacity: 0;
    transition: max-height 0.3s ease, opacity 0.3s ease,
      visibility 0.3s ease;
    z-index: 200;
  }

  .nav-list.is-open {
    max-height: 320px;
    visibility: visible;
    opacity: 1;
  }

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

  .nav-list li a {
    padding: 14px 24px;
    font-size: 15px;
    border-radius: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-list li a.is-current {
    background-color: var(--color-accent);
    color: var(--color-primary);
  }

  .brand-name {
    font-size: 20px;
  }

  .home-main,
  .inner-main {
    padding-top: 16px;
    padding-bottom: 32px;
  }

  .page-header {
    margin-bottom: 24px;
  }

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

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

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

  .focus-content {
    padding: 20px;
  }

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

  .focus-summary {
    font-size: 14px;
  }

  .channel-nav-section {
    padding: 20px;
  }

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

  .channel-tag {
    padding: 6px 14px;
    font-size: 14px;
  }

  .news-item {
    padding: 16px 20px;
  }

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

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

  .picks-list,
  .pick-list {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

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

  .layout-aside,
  .sidebar {
    display: flex;
    flex-direction: column;
  }

  .latest-item {
    flex-direction: column;
    gap: 12px;
  }

  .latest-thumb {
    width: 100%;
    height: 160px;
  }

  .guide-section {
    padding: 20px;
  }

  .faq-item summary {
    padding: 12px 16px;
    font-size: 14px;
    padding-right: 36px;
  }

  .faq-item p {
    padding: 0 16px 12px;
    font-size: 14px;
  }

  .footer-shell {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 32px;
  }

  .error-code {
    font-size: 52px;
  }

  .error-section {
    padding: 32px 20px;
  }

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

  .more-reading a {
    display: block;
    margin-right: 0;
  }

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

  .related-links {
    flex-direction: column;
    align-items: stretch;
  }

  .related-links a {
    text-align: center;
  }
}

/* ---- 小屏手机（≤390px） ---- */

@media (max-width: 390px) {
  .brand-tag {
    display: none;
  }

  .channel-tag {
    font-size: 13px;
    padding: 5px 12px;
  }

  .focus-media {
    min-height: 200px;
  }

  .topic-image,
  .topic-cover img {
    height: 160px;
  }

  .channel-media {
    height: 140px;
  }

  .pick-media img {
    height: 120px;
  }

  .guide-figure img {
    height: 160px;
  }

  .footer-bottom {
    padding: 12px 16px 20px;
  }

  .footer-copy {
    font-size: 13px;
  }

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

  .latest-thumb {
    height: 140px;
  }
}

/* ---- 打印 ---- */

@media print {
  .site-header,
  .site-footer,
  .breadcrumb,
  .layout-aside,
  .sidebar {
    display: none;
  }

  .site-main {
    max-width: 100%;
    padding: 0;
  }

  body {
    background-color: #ffffff;
  }
}