/* ==========================================================================
   base / 基础样式
   ========================================================================== */

/* Reset 与全局基础 */
*,
*::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: #1f2937;
  background-color: #f5f0e8;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: #c2410c;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #9a3412;
}

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

h1,
h2,
h3,
h4 {
  line-height: 1.3;
  color: #1f2937;
  font-weight: 700;
}

h1 {
  font-size: 28px;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 18px;
}

p {
  margin-bottom: 12px;
}

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

/* 隐藏辅助文本 */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ==========================================================================
   layout / 布局骨架
   ========================================================================== */

/* 页头 */
.site-header {
  background-color: #ffffff;
  border-bottom: 1px solid #d1d5db;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-size: 22px;
  font-weight: 800;
  color: #c2410c;
  white-space: nowrap;
  flex-shrink: 0;
}

.brand:hover {
  color: #9a3412;
}

/* 主导航 */
.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-list li a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: #1f2937;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-list li a:hover {
  background-color: #f5f0e8;
  color: #c2410c;
}

.nav-list li a.is-current {
  color: #c2410c;
  background-color: #fdf2ec;
  font-weight: 600;
}

/* 目录按钮 */
.header-directory {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  color: #1f2937;
  background-color: #f9fafb;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.header-directory:hover {
  background-color: #f5f0e8;
  border-color: #c2410c;
  color: #c2410c;
}

/* 移动端导航按钮 */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: #1f2937;
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* 页脚 */
.site-footer {
  background-color: #1f2937;
  color: #d1d5db;
  margin-top: auto;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 20px 32px;
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 48px;
}

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
}

.footer-slogan {
  font-size: 15px;
  color: #f9fafb;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.6;
  color: #9ca3af;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.footer-group h4 {
  font-size: 15px;
  font-weight: 600;
  color: #f9fafb;
  margin-bottom: 12px;
}

.footer-group ul {
  list-style: none;
}

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

.footer-group ul li a {
  font-size: 14px;
  color: #9ca3af;
  transition: color 0.2s ease;
}

.footer-group ul li a:hover {
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding: 16px 20px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: #9ca3af;
  margin: 0;
}

/* 主内容 */
.site-main {
  flex: 1;
}

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

.inner-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 64px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: #6b7280;
  margin-bottom: 24px;
}

.breadcrumb a {
  color: #6b7280;
}

.breadcrumb a:hover {
  color: #c2410c;
}

.breadcrumb-sep {
  color: #9ca3af;
}

.breadcrumb-current {
  color: #1f2937;
  font-weight: 500;
}

/* 页面标题区 */
.page-header {
  margin-bottom: 32px;
}

.page-title {
  font-size: 28px;
  font-weight: 800;
  color: #1f2937;
  margin-bottom: 8px;
}

.page-description {
  font-size: 16px;
  color: #6b7280;
  max-width: 720px;
  line-height: 1.6;
}

/* 区块标题 */
.section-title {
  font-size: 22px;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 24px;
  position: relative;
  padding-left: 14px;
}

.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 4px;
  background-color: #c2410c;
  border-radius: 2px;
}

/* ==========================================================================
   components / 通用组件
   ========================================================================== */

/* 按钮 */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background-color: #c2410c;
  color: #ffffff;
  border: 1px solid #c2410c;
}

.btn-primary:hover {
  background-color: #9a3412;
  border-color: #9a3412;
  color: #ffffff;
}

.btn-secondary {
  background-color: #f9fafb;
  color: #1f2937;
  border: 1px solid #d1d5db;
}

.btn-secondary:hover {
  background-color: #f5f0e8;
  border-color: #c2410c;
  color: #c2410c;
}

/* 侧栏通用 */
.aside-title {
  font-size: 18px;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid #f5f0e8;
}

.aside-card {
  background-color: #f9fafb;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 20px;
  transition: box-shadow 0.2s ease;
}

.aside-card:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

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

.aside-card h3 {
  font-size: 16px;
  font-weight: 600;
  padding: 12px 16px 4px;
}

.aside-card p {
  font-size: 14px;
  color: #6b7280;
  padding: 0 16px;
  margin-bottom: 8px;
  line-height: 1.5;
}

.aside-card a {
  display: block;
  padding: 8px 16px 12px;
  font-size: 14px;
  font-weight: 500;
}

/* 侧栏卡片（guide / analysis） */
.sidebar-card {
  background-color: #f9fafb;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 20px;
}

.sidebar-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 6px;
  margin-bottom: 12px;
}

.sidebar-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.sidebar-card p {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.5;
  margin-bottom: 8px;
}

.sidebar-card a {
  font-size: 14px;
  font-weight: 500;
}

.sidebar-list {
  list-style: none;
}

.sidebar-list li {
  margin-bottom: 8px;
}

.sidebar-list li a {
  font-size: 14px;
  line-height: 1.5;
}

/* 相关列表 */
.related-list {
  list-style: none;
}

.related-list li {
  margin-bottom: 10px;
}

.related-list li a {
  font-size: 15px;
  line-height: 1.5;
  display: inline-block;
}

.related-list li a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   pages / 首页
   ========================================================================== */

/* Hero 焦点区 */
.hero-section {
  background-color: #fdf2ec;
  border-bottom: 1px solid #d1d5db;
}

.hero-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 20px;
  gap: 48px;
}

.hero-content h1 {
  font-size: 32px;
  font-weight: 800;
  color: #1f2937;
  margin-bottom: 12px;
  line-height: 1.3;
}

.hero-slogan {
  font-size: 18px;
  font-weight: 600;
  color: #c2410c;
  margin-bottom: 12px;
}

.hero-desc {
  font-size: 16px;
  color: #4b5563;
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 520px;
}

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

.hero-figure {
  margin: 0;
}

.hero-img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  border-radius: 8px;
}

/* 频道导航带 */
.channel-nav-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 20px 0;
}

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

.channel-tag {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 20px;
  font-size: 15px;
  font-weight: 500;
  color: #1f2937;
  background-color: #f9fafb;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.channel-tag:hover {
  background-color: #fdf2ec;
  border-color: #c2410c;
  color: #c2410c;
}

/* 最新资讯 */
.latest-news-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 20px 0;
}

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

.news-item {
  display: flex;
  gap: 16px;
  background-color: #f9fafb;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 16px;
  transition: box-shadow 0.2s ease;
}

.news-item:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.news-thumb {
  width: 160px;
  height: 110px;
  object-fit: cover;
  border-radius: 6px;
  flex-shrink: 0;
}

.news-body h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.4;
}

.news-body h3 a {
  color: #1f2937;
}

.news-body h3 a:hover {
  color: #c2410c;
}

.news-summary {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-body time {
  font-size: 13px;
  color: #9ca3af;
}

/* 专题推荐 */
.topics-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 20px 0;
}

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

.topic-card {
  background-color: #f9fafb;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

.topic-card:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

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

.topic-content {
  padding: 20px;
}

.topic-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.topic-content h3 a {
  color: #1f2937;
}

.topic-content h3 a:hover {
  color: #c2410c;
}

.topic-desc {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.6;
  margin-bottom: 0;
}

/* 编辑推荐 */
.editor-picks-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 20px 0;
}

.editor-picks-list {
  list-style: none;
}

.editor-pick-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid #d1d5db;
}

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

.pick-number {
  font-size: 24px;
  font-weight: 800;
  color: #c2410c;
  line-height: 1;
  min-width: 36px;
}

.pick-content h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.pick-content h3 a {
  color: #1f2937;
}

.pick-content h3 a:hover {
  color: #c2410c;
}

.pick-reason {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.5;
  margin-bottom: 0;
}

/* 来源说明 */
.source-info-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 20px 64px;
}

.source-info-content {
  background-color: #f9fafb;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 24px;
}

.source-info-content p {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.6;
  margin-bottom: 12px;
}

.source-info-content p:last-of-type {
  margin-bottom: 16px;
}

.source-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.source-actions a {
  font-size: 14px;
  font-weight: 500;
}

/* ==========================================================================
   pages / 频道分类 channels.html
   ========================================================================== */

.layout-shell {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

/* 频道列表 */
.channel-list {
  display: grid;
  gap: 20px;
}

.channel-card {
  display: flex;
  gap: 20px;
  background-color: #f9fafb;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 16px;
  transition: box-shadow 0.2s ease;
}

.channel-card:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.channel-card-img {
  width: 200px;
  height: 140px;
  object-fit: cover;
  border-radius: 6px;
  flex-shrink: 0;
}

.channel-card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.channel-card-body h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.channel-card-body p {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.6;
  margin-bottom: 12px;
}

.channel-card-body a {
  font-size: 14px;
  font-weight: 500;
  align-self: flex-start;
}

/* 频道介绍 */
.channel-intro {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid #d1d5db;
}

.channel-intro p {
  font-size: 15px;
  color: #4b5563;
  line-height: 1.7;
  max-width: 800px;
}

/* ==========================================================================
   pages / 内容专题 topics.html
   ========================================================================== */

.page-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

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

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

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

.topic-card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.topic-card-title a {
  color: #1f2937;
}

.topic-card-title a:hover {
  color: #c2410c;
}

.topic-card-desc {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.5;
  margin-bottom: 12px;
}

.topic-card-body a {
  font-size: 14px;
  font-weight: 500;
}

.topic-aside {
  background-color: #f9fafb;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 20px;
}

.aside-desc {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.6;
  margin-bottom: 16px;
}

.aside-link {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 500;
  border-left: 3px solid #c2410c;
  background-color: #fdf2ec;
  border-radius: 0 4px 4px 0;
  margin-bottom: 8px;
}

.aside-link:hover {
  background-color: #f5f0e8;
}

/* ==========================================================================
   pages / 实用指南 guide.html
   ========================================================================== */

.content-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

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

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

.guide-section h2 {
  font-size: 22px;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid #f5f0e8;
}

.guide-section p {
  font-size: 16px;
  color: #4b5563;
  line-height: 1.7;
  margin-bottom: 16px;
}

/* 指南频道列表 */
.guide-section .channel-list {
  list-style: none;
  margin-bottom: 16px;
}

.guide-section .channel-list li {
  padding: 10px 16px;
  background-color: #f9fafb;
  border-left: 3px solid #c2410c;
  border-radius: 0 6px 6px 0;
  margin-bottom: 8px;
  font-size: 15px;
  color: #4b5563;
}

.guide-section .channel-list li strong {
  color: #1f2937;
}

/* 验证步骤 */
.verify-steps {
  list-style: none;
  counter-reset: step-counter;
  margin-bottom: 16px;
}

.verify-steps li {
  counter-increment: step-counter;
  position: relative;
  padding: 12px 16px 12px 48px;
  background-color: #f9fafb;
  border-radius: 6px;
  margin-bottom: 10px;
  font-size: 15px;
  color: #4b5563;
  line-height: 1.6;
}

.verify-steps li::before {
  content: counter(step-counter);
  position: absolute;
  left: 12px;
  top: 12px;
  width: 28px;
  height: 28px;
  background-color: #c2410c;
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}

.verify-steps li strong {
  color: #1f2937;
}

/* 常见陷阱卡片 */
.pitfall-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}

.pitfall-card {
  background-color: #f9fafb;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 16px;
}

.pitfall-card h3 {
  font-size: 16px;
  font-weight: 600;
  color: #c2410c;
  margin-bottom: 8px;
}

.pitfall-card p {
  font-size: 14px;
  color: #6b7280;
  line-height: 1.6;
  margin-bottom: 0;
}

/* 相关指南 */
.related-guides {
  margin-top: 40px;
  padding: 20px;
  background-color: #f9fafb;
  border: 1px solid #d1d5db;
  border-radius: 8px;
}

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

/* 指南侧栏 */
.guide-sidebar {
  min-width: 0;
}

/* ==========================================================================
   pages / 深度解读 analysis.html
   ========================================================================== */

.analysis-article {
  min-width: 0;
}

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

.article-section h2 {
  font-size: 22px;
  font-weight: 700;
  color: #1f2937;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid #f5f0e8;
}

.article-section p {
  font-size: 16px;
  color: #4b5563;
  line-height: 1.7;
  margin-bottom: 16px;
}

.article-figure {
  margin: 24px 0;
}

.article-figure img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  border-radius: 8px;
}

.article-figure figcaption {
  font-size: 13px;
  color: #9ca3af;
  text-align: center;
  padding: 8px 0;
}

/* 相关推荐 */
.related-box {
  margin-top: 40px;
  padding: 20px;
  background-color: #f9fafb;
  border: 1px solid #d1d5db;
  border-radius: 8px;
}

.related-box h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
}

/* 分析侧栏 */
.analysis-sidebar {
  min-width: 0;
}

/* ==========================================================================
   pages / 404
   ========================================================================== */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 20px;
}

.error-section {
  text-align: center;
  max-width: 480px;
}

.error-code {
  font-size: 72px;
  font-weight: 800;
  color: #c2410c;
  line-height: 1;
  margin-bottom: 16px;
}

.error-section h1 {
  font-size: 24px;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 16px;
  color: #6b7280;
  margin-bottom: 24px;
}

.error-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 28px;
  background-color: #c2410c;
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid #c2410c;
  transition: background-color 0.2s ease;
}

.error-btn:hover {
  background-color: #9a3412;
  border-color: #9a3412;
  color: #ffffff;
}

/* ==========================================================================
   responsive / 响应式
   ========================================================================== */

/* 平板及以下 */
@media (max-width: 1024px) {
  .hero-section {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 20px;
  }

  .hero-img {
    height: 260px;
  }

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

  .layout-shell,
  .page-layout,
  .content-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .channel-aside,
  .topic-aside,
  .guide-sidebar,
  .analysis-sidebar {
    grid-row: auto;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

/* 手机端 */
@media (max-width: 768px) {
  .header-inner {
    height: auto;
    min-height: 56px;
    padding: 8px 16px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .brand {
    font-size: 18px;
  }

  /* 移动导航按钮 */
  .nav-toggle {
    display: flex;
    order: 3;
  }

  .site-nav {
    order: 4;
    flex-basis: 100%;
    justify-content: flex-start;
  }

  .nav-list {
    display: none;
    flex-direction: column;
    width: 100%;
    gap: 0;
    padding: 8px 0;
  }

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

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

  .nav-list li a {
    padding: 12px 16px;
    border-radius: 6px;
  }

  .header-directory {
    order: 2;
    padding: 6px 12px;
    font-size: 13px;
    min-height: 36px;
  }

  /* 首页移动端 */
  .hero-section {
    padding: 32px 16px;
    gap: 24px;
  }

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

  .hero-slogan {
    font-size: 16px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }

  .hero-img {
    height: 200px;
  }

  .channel-nav-section,
  .latest-news-section,
  .topics-section,
  .editor-picks-section,
  .source-info-section {
    padding: 32px 16px 0;
  }

  .source-info-section {
    padding-bottom: 48px;
  }

  .channel-tags {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
  }

  .channel-tag {
    flex-shrink: 0;
    white-space: nowrap;
  }

  .news-item {
    flex-direction: column;
  }

  .news-thumb {
    width: 100%;
    height: 180px;
  }

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

  .topic-thumb {
    height: 160px;
  }

  .editor-pick-item {
    gap: 12px;
  }

  .pick-number {
    font-size: 20px;
    min-width: 28px;
  }

  /* 内页移动端 */
  .inner-main {
    padding: 16px 16px 48px;
  }

  .breadcrumb {
    margin-bottom: 16px;
    font-size: 13px;
  }

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

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

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

  /* 频道卡片 */
  .channel-card {
    flex-direction: column;
    gap: 12px;
  }

  .channel-card-img {
    width: 100%;
    height: 160px;
  }

  /* 专题网格 */
  .topic-grid {
    grid-template-columns: 1fr;
  }

  /* 陷阱卡片 */
  .pitfall-grid {
    grid-template-columns: 1fr;
  }

  /* 文章图片 */
  .article-figure img {
    height: 200px;
  }

  /* 页脚 */
  .footer-inner {
    padding: 32px 16px 24px;
  }

  .footer-links {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

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

  /* 404 */
  .error-main {
    padding: 48px 16px;
  }

  .error-code {
    font-size: 56px;
  }
}

/* 超小屏 */
@media (max-width: 390px) {
  .brand {
    font-size: 16px;
  }

  .header-directory {
    padding: 6px 10px;
    font-size: 12px;
  }

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

  .footer-group h4 {
    font-size: 14px;
  }

  .footer-group ul li a {
    font-size: 13px;
  }

  .hero-content h1 {
    font-size: 24px;
  }

  .hero-slogan {
    font-size: 15px;
  }

  .hero-desc {
    font-size: 14px;
  }

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

  .news-summary {
    -webkit-line-clamp: 3;
  }
}