/* ============================================================
   BASE — 基础样式
   ============================================================ */
*,
*::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: 1.6;
  color: #333333;
  background-color: #f5f5f0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: #2d6a4f;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #1b4d36;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.3;
  color: #333333;
}

/* ============================================================
   LAYOUT — 全站骨架
   ============================================================ */

.site-header {
  background-color: #ffffff;
  border-bottom: 1px solid #e0e0e0;
  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;
}

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

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: #2d6a4f;
  white-space: nowrap;
}

.brand-slogan {
  font-size: 13px;
  color: #666666;
  white-space: nowrap;
}

.site-nav {
  display: block;
}

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

.nav-list li a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  color: #333333;
  border-radius: 6px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-list li a:hover {
  background-color: #f0f0eb;
  color: #2d6a4f;
}

.nav-list li a.is-current {
  background-color: #2d6a4f;
  color: #ffffff;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 44px;
  height: 44px;
  padding: 10px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  align-items: center;
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: #333333;
  border-radius: 2px;
}

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

.inner-main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 64px;
  width: 100%;
}

.site-footer {
  background-color: #ffffff;
  border-top: 1px solid #e0e0e0;
  margin-top: auto;
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px 24px;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
}

.footer-brand .footer-logo {
  display: inline-block;
  margin-bottom: 12px;
}

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

.footer-desc {
  font-size: 14px;
  color: #666666;
  line-height: 1.7;
}

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

.footer-heading {
  font-size: 15px;
  margin-bottom: 16px;
  color: #333333;
}

.footer-nav li {
  margin-bottom: 10px;
}

.footer-nav li a {
  font-size: 14px;
  color: #666666;
}

.footer-nav li a:hover {
  color: #2d6a4f;
}

.footer-bottom {
  border-top: 1px solid #e0e0e0;
  padding-top: 20px;
  margin-top: 40px;
}

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

/* ============================================================
   COMPONENTS — 通用组件
   ============================================================ */

/* 面包屑 */
.breadcrumb {
  margin-bottom: 28px;
  font-size: 14px;
  color: #666666;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: #2d6a4f;
}

.breadcrumb-sep {
  color: #cccccc;
}

.breadcrumb-current {
  color: #999999;
}

/* 页面标题区 */
.page-header {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid #e0e0e0;
}

.page-title {
  font-size: 32px;
  color: #333333;
  margin-bottom: 12px;
}

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

/* 区块标题 */
.section-title {
  font-size: 24px;
  color: #333333;
  margin-bottom: 20px;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.section-head .section-title {
  margin-bottom: 0;
}

.section-more {
  font-size: 14px;
  color: #2d6a4f;
  white-space: nowrap;
}

.section-more:hover {
  color: #1b4d36;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.btn-primary {
  background-color: #2d6a4f;
  color: #ffffff;
}

.btn-primary:hover {
  background-color: #1b4d36;
  color: #ffffff;
}

.btn-secondary {
  background-color: #ffffff;
  color: #2d6a4f;
  border-color: #2d6a4f;
}

.btn-secondary:hover {
  background-color: #f0f0eb;
  color: #1b4d36;
}

/* 相关推荐 */
.related-links {
  margin-top: 48px;
  padding: 28px;
  background-color: #ffffff;
  border-radius: 8px;
  border: 1px solid #e0e0e0;
}

.related-links .section-title {
  font-size: 20px;
  margin-bottom: 16px;
}

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

.related-list li a {
  font-size: 15px;
}

/* ============================================================
   PAGES — 首页
   ============================================================ */

.home-main {
  width: 100%;
}

/* 焦点报道区 */
.hero-section {
  background-color: #ffffff;
  border-bottom: 1px solid #e0e0e0;
}

.hero-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 24px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}

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

.hero-title {
  font-size: 36px;
  line-height: 1.3;
  color: #333333;
}

.hero-lead {
  font-size: 17px;
  color: #666666;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.hero-media {
  border-radius: 8px;
  overflow: hidden;
  background-color: #f0f0eb;
}

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

/* 频道分类导航带 */
.channel-strip {
  padding: 48px 0 8px;
}

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

.channel-strip .section-title {
  font-size: 20px;
  margin-bottom: 20px;
}

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

.channel-tag {
  display: inline-block;
  padding: 10px 22px;
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  font-size: 15px;
  color: #333333;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.channel-tag:hover {
  background-color: #2d6a4f;
  border-color: #2d6a4f;
  color: #ffffff;
}

/* 最新资讯列表 */
.latest-news {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.news-item {
  padding: 24px 0;
  border-bottom: 1px solid #e0e0e0;
}

.news-item:first-child {
  padding-top: 0;
}

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

.news-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.news-title {
  font-size: 18px;
  line-height: 1.4;
}

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

.news-title a:hover {
  color: #2d6a4f;
}

.news-excerpt {
  font-size: 15px;
  color: #666666;
  line-height: 1.7;
}

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

/* 专题推荐区 */
.topic-feature {
  background-color: #ffffff;
  border-top: 1px solid #e0e0e0;
  border-bottom: 1px solid #e0e0e0;
}

.topic-feature > .section-head,
.topic-feature > .topic-grid {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.topic-feature > .section-head {
  padding-top: 48px;
  margin-bottom: 24px;
}

.topic-feature > .topic-grid {
  padding-bottom: 48px;
}

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

.topic-card {
  background-color: #f9f9f5;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid #e0e0e0;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.topic-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

.topic-card-link {
  display: block;
  height: 100%;
  color: inherit;
}

.topic-card-link:hover {
  color: inherit;
}

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

.topic-body {
  padding: 24px;
}

.topic-name {
  font-size: 20px;
  margin-bottom: 10px;
  color: #333333;
}

.topic-desc {
  font-size: 15px;
  color: #666666;
  line-height: 1.7;
}

/* 编辑推荐 */
.editor-picks {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 24px;
}

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

.pick-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 20px 24px;
  transition: box-shadow 0.2s ease;
}

.pick-item:hover {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.pick-index {
  font-size: 28px;
  font-weight: 700;
  color: #2d6a4f;
  line-height: 1;
  flex-shrink: 0;
  min-width: 36px;
}

.pick-content {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pick-title {
  font-size: 17px;
  line-height: 1.4;
}

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

.pick-title a:hover {
  color: #2d6a4f;
}

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

/* 阅读指南入口 */
.guide-entry {
  background-color: #ffffff;
  border-top: 1px solid #e0e0e0;
}

.guide-entry > .section-head,
.guide-entry > .guide-grid {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.guide-entry > .section-head {
  padding-top: 48px;
  margin-bottom: 24px;
}

.guide-entry > .guide-grid {
  padding-bottom: 48px;
}

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

.guide-card {
  background-color: #f9f9f5;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 24px;
  transition: box-shadow 0.2s ease;
}

.guide-card:hover {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.guide-title {
  font-size: 18px;
  margin-bottom: 8px;
}

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

.guide-title a:hover {
  color: #2d6a4f;
}

.guide-desc {
  font-size: 14px;
  color: #666666;
  line-height: 1.7;
}

/* ============================================================
   PAGES — 频道分类（channels）
   ============================================================ */

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

.channel-section > .section-title {
  font-size: 20px;
  margin-bottom: 20px;
}

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

.channel-card {
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

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

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

.channel-body {
  padding: 20px;
}

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

.channel-body p {
  font-size: 14px;
  color: #666666;
  line-height: 1.6;
  margin-bottom: 12px;
}

.channel-link {
  font-size: 14px;
  font-weight: 600;
}

.channel-intro-section {
  margin-bottom: 48px;
}

.channel-intro-section > .section-title {
  font-size: 20px;
  margin-bottom: 24px;
}

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

.intro-item {
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 20px;
}

.intro-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
  color: #2d6a4f;
}

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

/* ============================================================
   PAGES — 专题策划（topic）
   ============================================================ */

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

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

.intro-text {
  font-size: 15px;
  color: #666666;
  line-height: 1.7;
  max-width: 720px;
}

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

.topic-list-section > .section-title {
  font-size: 20px;
  margin-bottom: 24px;
}

.topic-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.topic-list .topic-card {
  display: flex;
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
  transition: box-shadow 0.2s ease;
}

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

.topic-card-link {
  display: flex;
  width: 100%;
  color: inherit;
}

.topic-card-link:hover {
  color: inherit;
}

.topic-card-media {
  flex-shrink: 0;
  width: 280px;
}

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

.topic-card-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.topic-card-title {
  font-size: 20px;
  color: #333333;
}

.topic-card-excerpt {
  font-size: 15px;
  color: #666666;
  line-height: 1.7;
}

.topic-card-meta {
  font-size: 13px;
  color: #999999;
  margin-top: auto;
}

/* 专题相关推荐 */
.topic-related {
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 28px;
}

.topic-related .section-title {
  font-size: 20px;
  margin-bottom: 16px;
}

.related-panel {
  font-size: 15px;
  color: #666666;
  line-height: 1.7;
}

.related-text a {
  font-weight: 600;
}

/* ============================================================
   PAGES — 深度解读（insight）
   ============================================================ */

.article-list {
  margin-bottom: 48px;
}

.article-list > .section-title {
  font-size: 20px;
  margin-bottom: 24px;
}

.article-items {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.article-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid #e0e0e0;
}

.article-item:first-child {
  padding-top: 0;
}

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

.article-text {
  flex: 1;
}

.article-title {
  font-size: 18px;
  margin-bottom: 8px;
}

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

.article-title a:hover {
  color: #2d6a4f;
}

.article-excerpt {
  font-size: 15px;
  color: #666666;
  line-height: 1.7;
  margin-bottom: 8px;
}

.read-time {
  font-size: 13px;
  color: #999999;
}

.article-link {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
}

/* 分析维度说明 */
.analysis-dimensions {
  margin-bottom: 48px;
}

.analysis-dimensions > .section-title {
  font-size: 20px;
  margin-bottom: 16px;
}

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

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

.dimension-card {
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 20px;
}

.dimension-title {
  font-size: 16px;
  color: #2d6a4f;
  margin-bottom: 8px;
}

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

.dimensions-note {
  margin-top: 20px;
  font-size: 14px;
  color: #999999;
  line-height: 1.6;
  background-color: #f9f9f5;
  border-left: 3px solid #2d6a4f;
  padding: 12px 16px;
  border-radius: 0 6px 6px 0;
}

/* 图片配文 */
.insight-media {
  margin: 32px 0;
  border-radius: 8px;
  overflow: hidden;
}

.insight-media img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.insight-media figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: #999999;
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-top: none;
}

/* ============================================================
   PAGES — 阅读指南（guide）
   ============================================================ */

.page-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
}

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

.main-content .breadcrumb {
  margin-bottom: 24px;
}

.main-content .page-header {
  margin-bottom: 32px;
}

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

.guide-section > .section-title {
  font-size: 22px;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 15px;
  color: #666666;
  line-height: 1.7;
  margin-bottom: 20px;
}

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

.step-item {
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 20px 24px;
}

.step-title {
  font-size: 16px;
  color: #2d6a4f;
  margin-bottom: 6px;
}

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

/* 侧栏 */
.guide-aside {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 96px;
}

.aside-figure {
  border-radius: 8px;
  overflow: hidden;
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
}

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

.aside-figure figcaption {
  padding: 10px 14px;
  font-size: 13px;
  color: #999999;
}

.aside-tip {
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 20px;
}

.aside-title {
  font-size: 16px;
  color: #2d6a4f;
  margin-bottom: 8px;
}

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

/* ============================================================
   PAGES — 404
   ============================================================ */

.error-main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  flex: 1;
}

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

.error-code {
  font-size: 72px;
  font-weight: 700;
  color: #2d6a4f;
  line-height: 1;
  margin-bottom: 16px;
}

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

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

.error-action {
  display: inline-block;
  padding: 12px 28px;
  background-color: #2d6a4f;
  color: #ffffff;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  transition: background-color 0.2s ease;
}

.error-action:hover {
  background-color: #1b4d36;
  color: #ffffff;
}

/* ============================================================
   RESPONSIVE — 响应式
   ============================================================ */

/* 平板 */
@media (max-width: 992px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 24px;
  }

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

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

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

  .guide-aside {
    position: static;
  }

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

/* 手机 */
@media (max-width: 768px) {
  .header-inner {
    height: 60px;
    padding: 0 16px;
  }

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

  .brand-slogan {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background-color: #ffffff;
    border-bottom: 1px solid #e0e0e0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  }

  .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 16px 16px;
  }

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

  .nav-list li a {
    padding: 14px 12px;
    border-radius: 6px;
    font-size: 16px;
  }

  .inner-main {
    padding: 24px 16px 48px;
  }

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

  .page-header {
    margin-bottom: 28px;
  }

  .hero-layout {
    padding: 32px 16px;
  }

  .hero-title {
    font-size: 26px;
  }

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

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

  .btn {
    width: 100%;
  }

  .hero-media img {
    height: 200px;
  }

  .channel-strip {
    padding: 32px 0 0;
  }

  .channel-strip-inner,
  .latest-news,
  .editor-picks {
    padding-left: 16px;
    padding-right: 16px;
  }

  .latest-news,
  .editor-picks {
    padding-top: 32px;
    padding-bottom: 32px;
  }

  .channel-tags {
    gap: 8px;
  }

  .channel-tag {
    padding: 8px 16px;
    font-size: 14px;
  }

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

  .section-head {
    margin-bottom: 16px;
  }

  .news-item {
    padding: 18px 0;
  }

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

  .topic-feature > .section-head,
  .topic-feature > .topic-grid,
  .guide-entry > .section-head,
  .guide-entry > .guide-grid {
    padding-left: 16px;
    padding-right: 16px;
  }

  .topic-feature > .section-head,
  .guide-entry > .section-head {
    padding-top: 32px;
  }

  .topic-feature > .topic-grid,
  .guide-entry > .guide-grid {
    padding-bottom: 32px;
  }

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

  .topic-media img {
    height: 180px;
  }

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

  .pick-index {
    font-size: 22px;
  }

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

  .channel-figure img {
    height: 140px;
  }

  .topic-list .topic-card {
    flex-direction: column;
  }

  .topic-card-link {
    flex-direction: column;
  }

  .topic-card-media {
    width: 100%;
  }

  .topic-card-media img {
    height: 180px;
  }

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

  .article-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 20px 0;
  }

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

  .article-link {
    align-self: flex-start;
  }

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

  .insight-media img {
    height: 200px;
  }

  .step-item {
    padding: 16px;
  }

  .footer-inner {
    padding: 32px 16px 16px;
    gap: 32px;
  }

  .footer-links {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    margin-top: 24px;
    padding-top: 16px;
  }

  .error-code {
    font-size: 48px;
  }

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

/* 小屏手机 */
@media (max-width: 390px) {
  .header-inner {
    gap: 12px;
  }

  .brand-name {
    font-size: 16px;
  }

  .nav-toggle {
    width: 40px;
    height: 40px;
  }

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

  .hero-media img {
    height: 180px;
  }

  .topic-media img,
  .topic-card-media img {
    height: 160px;
  }

  .channel-figure img {
    height: 130px;
  }
}

/* 滚动出现动画（不影响初始可见性） */
@media (prefers-reduced-motion: no-preference) {
  .topic-card,
  .guide-card,
  .channel-card,
  .intro-item,
  .dimension-card,
  .pick-item {
    transition: box-shadow 0.2s ease, transform 0.2s ease;
  }
}