/* ==========================================================================
   www.黑料 - 整站样式表
   轻量移动应用风：内容列表优先，清爽留白，强调可读性
   ========================================================================== */

/* --------------------------------------------------------------------------
   Base - 基础样式
   -------------------------------------------------------------------------- */
:root {
  --color-primary: #1a1a2e;
  --color-secondary: #16213e;
  --color-accent: #0f3460;
  --color-highlight: #e94560;
  --color-bg: #f5f5f5;
  --color-surface: #ffffff;
  --color-text: #2d2d2d;
  --color-text-light: #6b7280;
  --color-border: #e5e7eb;
  --container-width: 1200px;
  --sidebar-width: 260px;
  --main-width: 880px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
}

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

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

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.7;
  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-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-highlight);
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-primary);
}

h1 {
  font-size: 2rem;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.125rem;
}

p {
  margin-bottom: 1rem;
}

time {
  color: var(--color-text-light);
  font-size: 0.875rem;
}

/* --------------------------------------------------------------------------
   Layout - 布局骨架
   -------------------------------------------------------------------------- */

/* 页头 */
.site-header {
  background-color: var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}

.brand-link {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  padding: 8px 0;
}

.brand-name {
  font-size: 1.375rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.02em;
}

.brand-slogan {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 2px;
}

/* 主导航 */
.site-nav {
  display: flex;
  align-items: center;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}

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

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

.nav-list li a {
  display: block;
  padding: 10px 16px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

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

.nav-list li a.is-current {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.15);
  font-weight: 600;
}

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

.home-main {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* 内页布局容器 */
.layout-shell {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 24px;
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.layout-shell.sidebar-left {
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
}

/* 侧栏 */
.sidebar,
.sidebar-area {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 20px;
  border: 1px solid var(--color-border);
}

.sidebar-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 2px solid var(--color-highlight);
}

.sidebar-tree li,
.sidebar-list li {
  margin-bottom: 4px;
}

.sidebar-tree li a,
.sidebar-list li a {
  display: block;
  padding: 10px 12px;
  color: var(--color-text);
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.sidebar-tree li a:hover,
.sidebar-list li a:hover {
  background-color: var(--color-bg);
  color: var(--color-highlight);
}

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

.sidebar-note {
  margin-top: 16px;
  padding: 16px;
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.sidebar-note p {
  margin-bottom: 0;
}

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

/* 内页主内容 */
.inner-main {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 32px;
  border: 1px solid var(--color-border);
  min-width: 0;
}

/* 面包屑 */
.breadcrumb {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

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

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

.breadcrumb-sep {
  color: var(--color-text-light);
  margin: 0 4px;
}

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

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

.page-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.page-description {
  font-size: 1rem;
  color: var(--color-text-light);
  line-height: 1.7;
  max-width: 720px;
}

/* 区块标题 */
.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 20px;
  padding-left: 12px;
  border-left: 4px solid var(--color-highlight);
}

/* 页脚 */
.site-footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.8);
  margin-top: 48px;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 48px 24px 32px;
  display: grid;
  grid-template-columns: 1.2fr 2fr 1fr;
  gap: 40px;
}

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

.footer-brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
}

.footer-tagline {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

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

.footer-col-title {
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 16px;
}

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

.footer-nav-list li a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
  transition: color 0.2s ease;
}

.footer-nav-list li a:hover {
  color: #ffffff;
}

.footer-feedback {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

.footer-feedback p {
  margin-bottom: 8px;
}

/* --------------------------------------------------------------------------
   Components - 通用组件
   -------------------------------------------------------------------------- */

/* 按钮 */
.btn-primary {
  display: inline-block;
  padding: 12px 28px;
  background-color: var(--color-highlight);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.btn-primary:hover {
  background-color: #d63851;
  color: #ffffff;
  transform: translateY(-2px);
}

/* 预览列表（通用） */
.preview-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.preview-item {
  padding: 20px;
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-highlight);
  transition: background-color 0.2s ease;
}

.preview-item:hover {
  background-color: #eef0f2;
}

.preview-title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

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

.preview-title a:hover {
  color: var(--color-highlight);
}

.preview-excerpt {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 8px;
}

.preview-meta {
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

/* 相关链接 */
.related-links {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.related-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.related-list li a {
  display: block;
  padding: 10px 16px;
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  color: var(--color-text);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.related-list li a:hover {
  background-color: #e8eaed;
  color: var(--color-highlight);
}

/* --------------------------------------------------------------------------
   Pages - 首页
   -------------------------------------------------------------------------- */

/* 首屏焦点区 */
.hero-focus {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 24px 0 40px;
  min-height: 380px;
  display: flex;
  align-items: flex-end;
}

.hero-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

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

.hero-overlay {
  position: relative;
  z-index: 1;
  padding: 48px 40px;
  background: linear-gradient(
    to top,
    rgba(26, 26, 46, 0.92) 0%,
    rgba(26, 26, 46, 0.6) 60%,
    rgba(26, 26, 46, 0.2) 100%
  );
  width: 100%;
}

.hero-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
  max-width: 680px;
}

.hero-sub {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 24px;
  max-width: 560px;
  line-height: 1.6;
}

/* 频道导航带 */
.channel-nav-section {
  margin-bottom: 48px;
}

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

.channel-tag-list li a {
  display: inline-block;
  padding: 10px 20px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  font-size: 0.9375rem;
  color: var(--color-text);
  transition: all 0.2s ease;
}

.channel-tag-list li a:hover {
  border-color: var(--color-highlight);
  color: var(--color-highlight);
  background-color: #fff5f6;
}

/* 最新资讯列表 */
.latest-news-section {
  margin-bottom: 48px;
}

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

.news-item {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.news-item:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

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

.news-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
}

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

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

.news-summary {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 12px;
}

/* 专题推荐区 */
.topics-section {
  margin-bottom: 48px;
}

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

.topic-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  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-media {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.topic-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.topic-card:hover .topic-media img {
  transform: scale(1.03);
}

.topic-body {
  padding: 24px;
}

.topic-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 10px;
}

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

.topic-title a:hover {
  color: var(--color-highlight);
}

.topic-excerpt {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 0;
}

/* 编辑推荐 */
.editor-picks-section {
  margin-bottom: 48px;
}

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

.pick-item {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: box-shadow 0.2s ease;
}

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

.pick-card {
  padding: 20px;
  position: relative;
}

.pick-card::before {
  content: "推荐";
  position: absolute;
  top: -1px;
  right: 16px;
  background-color: var(--color-highlight);
  color: #ffffff;
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.pick-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 10px;
  padding-top: 8px;
}

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

.pick-title a:hover {
  color: var(--color-highlight);
}

.pick-reason {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 0;
}

/* 反馈区 */
.feedback-section {
  margin-bottom: 48px;
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 32px;
}

.feedback-content {
  max-width: 720px;
}

.feedback-content p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   Pages - 频道分类
   -------------------------------------------------------------------------- */

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

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

.channel-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

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

.channel-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

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

.channel-card-title {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.channel-card-desc {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 12px;
}

.channel-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-highlight);
}

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

.channel-preview {
  margin-top: 40px;
}

/* --------------------------------------------------------------------------
   Pages - 内容专题
   -------------------------------------------------------------------------- */

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

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

.topic-figure {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.topic-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.topic-card:hover .topic-figure img {
  transform: scale(1.03);
}

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

.topic-card-title {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 8px;
}

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

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

.topic-card-summary {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 12px;
}

.topic-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-highlight);
}

.topic-link:hover {
  color: var(--color-accent);
}

.topic-preview-section {
  margin-top: 40px;
}

/* --------------------------------------------------------------------------
   Pages - 实用指南
   -------------------------------------------------------------------------- */

.guide-content {
  max-width: 100%;
}

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

.guide-section h2 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border);
}

.guide-section p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text);
  margin-bottom: 16px;
}

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

.guide-figure {
  margin-top: 32px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

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

.guide-figure figcaption {
  padding: 12px 16px;
  font-size: 0.8125rem;
  color: var(--color-text-light);
  background-color: var(--color-bg);
  text-align: center;
}

/* --------------------------------------------------------------------------
   Pages - 深度解读
   -------------------------------------------------------------------------- */

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

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

.insight-article-card {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 20px;
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 16px;
  transition: box-shadow 0.2s ease;
}

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

.article-media {
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: var(--radius-sm);
}

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

.article-body {
  display: flex;
  flex-direction: column;
}

.article-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.article-summary {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 12px;
  flex: 1;
}

.article-meta {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* 分析方法说明 */
.method-section {
  margin-bottom: 48px;
  background-color: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 32px;
}

.method-content > p {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 20px;
}

.method-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.method-step {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: 20px;
  border: 1px solid var(--color-border);
}

.method-step-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
  padding-left: 12px;
  border-left: 3px solid var(--color-highlight);
}

.method-step p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 0;
}

.method-closing {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.7;
}

.method-closing a {
  color: var(--color-highlight);
  font-weight: 600;
}

.method-closing a:hover {
  color: var(--color-accent);
}

/* 相关阅读 */
.related-section {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.related-links p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 12px;
}

.related-links p a {
  color: var(--color-highlight);
  font-weight: 600;
}

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

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

.error-main {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
}

.error-section {
  text-align: center;
  max-width: 480px;
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  padding: 48px 40px;
}

.error-code {
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-highlight);
  line-height: 1;
  margin-bottom: 16px;
}

.error-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.error-desc {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: 24px;
}

.error-btn {
  display: inline-block;
  padding: 12px 28px;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: background-color 0.2s ease;
}

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

/* --------------------------------------------------------------------------
   Responsive - 响应式
   -------------------------------------------------------------------------- */

/* 平板及以下 */
@media (max-width: 992px) {
  .channel-cards {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-inner {
    grid-template-columns: 1fr 1.5fr;
    gap: 32px;
  }

  .footer-feedback {
    grid-column: 1 / -1;
  }

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

  .article-media {
    aspect-ratio: 16 / 7;
  }
}

/* 移动端 768px 断点 */
@media (max-width: 768px) {
  .header-inner {
    padding: 0 16px;
    min-height: 56px;
  }

  .brand-name {
    font-size: 1.125rem;
  }

  .brand-slogan {
    font-size: 0.6875rem;
  }

  /* 汉堡菜单 */
  .nav-toggle {
    display: flex;
  }

  .nav-list {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background-color: var(--color-primary);
    flex-direction: column;
    padding: 8px 16px 16px;
    gap: 0;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
  }

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

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

  .nav-list li a {
    padding: 14px 16px;
    border-radius: var(--radius-sm);
  }

  /* 导航按钮展开态 */
  .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);
  }

  /* 内页布局切换为单列 */
  .layout-shell,
  .layout-shell.sidebar-left {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 16px;
  }

  /* 侧栏移动到正文之前 */
  .sidebar,
  .sidebar-area,
  .sidebar-card,
  .sidebar-inner {
    order: -1;
  }

  .inner-main {
    padding: 20px;
  }

  /* 首页 */
  .home-main {
    padding: 0 16px;
  }

  .hero-focus {
    min-height: 280px;
    margin: 16px 0 32px;
  }

  .hero-overlay {
    padding: 32px 20px;
  }

  .hero-title {
    font-size: 1.5rem;
  }

  .hero-sub {
    font-size: 0.9375rem;
  }

  .btn-primary {
    padding: 10px 24px;
    font-size: 0.9375rem;
  }

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

  .channel-tag-list li a {
    padding: 8px 16px;
    font-size: 0.875rem;
  }

  .news-card {
    padding: 16px;
  }

  .news-title {
    font-size: 1rem;
  }

  .news-summary {
    font-size: 0.875rem;
  }

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

  .topic-body {
    padding: 16px;
  }

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

  .pick-card {
    padding: 16px;
  }

  .feedback-section {
    padding: 20px;
  }

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

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

  /* 解读页 */
  .method-steps {
    grid-template-columns: 1fr;
  }

  .method-section {
    padding: 20px;
  }

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

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

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

  .footer-feedback {
    grid-column: auto;
  }

  /* 404 */
  .error-section {
    padding: 32px 24px;
  }

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

  /* 面包屑和页面标题 */
  .breadcrumb {
    font-size: 0.8125rem;
    margin-bottom: 16px;
    padding-bottom: 12px;
  }

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

  .page-title {
    font-size: 1.375rem;
  }

  .page-description {
    font-size: 0.9375rem;
  }

  .section-title {
    font-size: 1.125rem;
    margin-bottom: 16px;
  }
}

/* 小屏手机 */
@media (max-width: 480px) {
  .footer-links {
    grid-template-columns: 1fr;
  }

  .channel-tag-list li a {
    padding: 8px 12px;
    font-size: 0.8125rem;
  }

  .preview-item {
    padding: 16px;
  }

  .hero-focus {
    min-height: 240px;
  }

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

  .hero-title {
    font-size: 1.25rem;
  }

  .hero-sub {
    font-size: 0.875rem;
  }

  .insight-article-card {
    padding: 12px;
    gap: 12px;
  }

  .article-title {
    font-size: 1rem;
  }

  .article-summary {
    font-size: 0.875rem;
  }
}