/* ============================================================
   base — 基础变量、重置与全局骨架
   ============================================================ */
:root {
  --color-black: #000000;
  --color-white: #ffffff;
  --color-accent: #e63946;
  --color-gray-100: #f5f5f5;
  --color-gray-200: #e8e8e8;
  --color-gray-300: #d0d0d0;
  --color-gray-500: #777777;
  --color-gray-700: #444444;
  --color-gray-900: #222222;
  --font-sans: Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-serif: Georgia, "Times New Roman", "SimSun", serif;
  --container-width: 1200px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --header-height: 64px;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--color-gray-900);
  background-color: var(--color-white);
  line-height: 1.7;
}

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

a {
  color: var(--color-black);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.3;
}

h1 {
  font-size: 32px;
}

h2 {
  font-size: 24px;
}

h3 {
  font-size: 18px;
}

h4 {
  font-size: 16px;
}

p {
  margin-bottom: 1em;
}

time {
  color: var(--color-gray-500);
  font-size: 14px;
}

/* skip-link 视觉隐藏但可聚焦 */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  background: var(--color-black);
  color: var(--color-white);
  padding: 8px 16px;
}

.skip-link:focus {
  left: 0;
}

/* ============================================================
   layout — 全站统一外壳（页头 / 页脚 / 主容器）
   ============================================================ */
.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

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

.brand-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-black);
  letter-spacing: 0.5px;
}

.brand-tagline {
  font-size: 13px;
  color: var(--color-gray-500);
  font-family: var(--font-serif);
  font-style: italic;
}

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

.site-nav .nav-list a {
  display: block;
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-gray-700);
  border-radius: var(--radius-sm);
}

.site-nav .nav-list a:hover {
  color: var(--color-black);
  background-color: var(--color-gray-100);
}

.site-nav .nav-list a.is-current {
  color: var(--color-accent);
  font-weight: 700;
  background-color: rgba(230, 57, 70, 0.08);
}

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

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-black);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

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

.inner-main {
  padding-top: 24px;
  padding-bottom: 60px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-gray-500);
  margin-bottom: 24px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.breadcrumb a {
  color: var(--color-gray-500);
}

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

.breadcrumb-sep {
  color: var(--color-gray-300);
}

.breadcrumb-current {
  color: var(--color-gray-900);
  font-weight: 500;
}

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

.page-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: 8px;
  line-height: 1.3;
}

.page-description {
  font-size: 16px;
  color: var(--color-gray-500);
  max-width: 760px;
  line-height: 1.7;
}

/* 页脚 */
.site-footer {
  background-color: var(--color-black);
  color: var(--color-gray-300);
  margin-top: 60px;
  padding: 48px 0 24px;
}

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

.footer-brand-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 8px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-gray-500);
}

.footer-links h4 {
  color: var(--color-white);
  font-size: 15px;
  margin-bottom: 12px;
}

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

.footer-links ul a {
  color: var(--color-gray-500);
  font-size: 14px;
}

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

.footer-info {
  font-size: 13px;
  color: var(--color-gray-500);
  grid-column: 1 / -1;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 16px;
  margin-top: 16px;
}

.footer-info p {
  margin-bottom: 4px;
}

/* ============================================================
   components — 通用组件
   ============================================================ */
/* 区块标题 */
.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-black);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-black);
  position: relative;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background-color: var(--color-accent);
}

/* 按钮 */
.btn-primary,
.btn-secondary,
.btn-back-home {
  display: inline-block;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  min-height: 44px;
  line-height: 1.4;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.btn-primary:hover {
  background-color: #c92a35;
  color: var(--color-white);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-black);
  border-color: var(--color-gray-300);
}

.btn-secondary:hover {
  border-color: var(--color-black);
  color: var(--color-black);
  background-color: var(--color-gray-100);
}

/* 卡片通用 */
.focus-card,
.special-card,
.featured-card,
.timeline-card,
.related-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.focus-card:hover,
.special-card:hover,
.featured-card:hover,
.timeline-card:hover,
.related-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transform: translateY(-2px);
}

/* 链接卡片 */
.card-link,
.focus-link {
  display: block;
  color: inherit;
}

/* ============================================================
   pages — 首页
   ============================================================ */
/* 首屏 hero */
.hero-section {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 56px 0 48px;
  border-bottom: 1px solid var(--color-gray-200);
}

.hero-content {
  max-width: 560px;
}

.hero-title {
  font-size: 36px;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--color-black);
}

.hero-lead {
  font-size: 17px;
  color: var(--color-gray-500);
  line-height: 1.8;
  margin-bottom: 24px;
}

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

.hero-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-gray-100);
  aspect-ratio: 4 / 3;
}

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

/* 焦点报道 */
.focus-report {
  padding: 48px 0;
}

.focus-report h2 {
  font-size: 22px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-black);
  position: relative;
}

.focus-report h2::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background-color: var(--color-accent);
}

.focus-link {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 0;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.focus-link img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

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

.focus-text h3 {
  font-size: 22px;
  margin-bottom: 12px;
  line-height: 1.4;
}

.focus-text p {
  color: var(--color-gray-500);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.focus-more {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 14px;
}

/* 最新动态 */
.latest-updates {
  padding: 48px 0;
  border-top: 1px solid var(--color-gray-200);
}

.latest-updates h2 {
  font-size: 22px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-black);
  position: relative;
}

.latest-updates h2::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background-color: var(--color-accent);
}

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

.update-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-gray-200);
}

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

.update-item article {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: start;
}

.update-item h3 {
  font-size: 17px;
  margin-bottom: 6px;
}

.update-item h3 a {
  color: var(--color-black);
}

.update-item h3 a:hover {
  color: var(--color-accent);
}

.update-excerpt {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.6;
  margin-bottom: 0;
  max-width: 720px;
}

.update-item time {
  font-size: 13px;
  white-space: nowrap;
  padding-top: 4px;
}

/* 专题推荐 */
.special-recommend {
  padding: 48px 0;
  border-top: 1px solid var(--color-gray-200);
}

.special-recommend h2 {
  font-size: 22px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-black);
  position: relative;
}

.special-recommend h2::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background-color: var(--color-accent);
}

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

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

.special-content {
  padding: 20px;
}

.special-content h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.special-content p {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.6;
  margin-bottom: 12px;
}

.card-link {
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 600;
}

/* 编辑推荐 */
.editor-picks {
  padding: 48px 0;
  border-top: 1px solid var(--color-gray-200);
}

.editor-picks h2 {
  font-size: 22px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-black);
  position: relative;
}

.editor-picks h2::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background-color: var(--color-accent);
}

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

.pick-item {
  background-color: var(--color-gray-100);
  border-radius: var(--radius-md);
  padding: 20px;
  border-left: 3px solid var(--color-accent);
}

.pick-item h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.pick-item h3 a {
  color: var(--color-black);
}

.pick-item h3 a:hover {
  color: var(--color-accent);
}

.pick-item p {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.6;
  margin-bottom: 0;
}

/* 来源与反馈 */
.source-feedback {
  padding: 40px 0;
  border-top: 1px solid var(--color-gray-200);
  background-color: var(--color-gray-100);
  border-radius: var(--radius-md);
  padding: 32px;
  margin-bottom: 48px;
}

.source-feedback h2 {
  font-size: 20px;
  margin-bottom: 12px;
}

.source-feedback p {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: 16px;
}

.feedback-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.feedback-links a {
  display: inline-block;
  padding: 10px 20px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-black);
  background-color: var(--color-white);
  min-height: 44px;
  line-height: 1.4;
}

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

/* ============================================================
   pages — 热点追踪 (hot-topics)
   ============================================================ */
.hot-topics-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 40px;
  align-items: start;
}

.timeline-preview {
  margin-bottom: 40px;
}

.timeline-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 20px;
}

.timeline-card {
  padding: 20px;
}

.timeline-date {
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 8px;
  font-family: var(--font-serif);
}

.timeline-title {
  font-size: 16px;
  margin-bottom: 8px;
  line-height: 1.4;
}

.timeline-excerpt {
  font-size: 13px;
  color: var(--color-gray-500);
  line-height: 1.6;
  margin-bottom: 0;
}

.timeline-more {
  text-align: right;
}

.timeline-more a {
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 600;
}

/* 最新动态列表（内页） */
.hot-topics-layout .latest-updates {
  padding: 0;
  border-top: none;
}

.hot-topics-layout .latest-updates h2 {
  font-size: 20px;
}

.hot-topics-layout .update-list {
  display: flex;
  flex-direction: column;
}

.hot-topics-layout .update-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.hot-topics-layout .update-item article {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
}

.update-thumb {
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--color-gray-100);
  aspect-ratio: 4 / 3;
}

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

.update-title {
  font-size: 16px;
  margin-bottom: 6px;
}

.update-title a {
  color: var(--color-black);
}

.update-title a:hover {
  color: var(--color-accent);
}

.update-excerpt {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.6;
  margin-bottom: 6px;
}

.update-date {
  font-size: 13px;
}

/* 分页 */
.pagination {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
}

.page-current {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  background-color: var(--color-black);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
}

.pagination a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--color-gray-700);
  background-color: var(--color-white);
}

.pagination a:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* 筛选标签 */
.topic-filter {
  background-color: var(--color-gray-100);
  border-radius: var(--radius-md);
  padding: 20px;
}

.filter-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-gray-300);
}

.filter-tags {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.filter-tags a {
  display: block;
  padding: 8px 12px;
  font-size: 14px;
  color: var(--color-gray-700);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.filter-tags a:hover {
  background-color: var(--color-white);
  color: var(--color-accent);
}

/* 相关链接 */
.related-links {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-gray-200);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.related-card {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.related-label {
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 600;
  text-transform: uppercase;
}

.related-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-black);
  line-height: 1.5;
}

.related-card:hover .related-text {
  color: var(--color-accent);
}

/* ============================================================
   pages — 专题策划 (special-topics)
   ============================================================ */
.featured-specials {
  margin-bottom: 48px;
}

.featured-specials h2 {
  font-size: 22px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-black);
  position: relative;
}

.featured-specials h2::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background-color: var(--color-accent);
}

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

.featured-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
}

.featured-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.featured-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.featured-content h3 {
  font-size: 18px;
  margin-bottom: 10px;
  line-height: 1.4;
}

.featured-content p {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.6;
  margin-bottom: 14px;
}

.featured-content a {
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 600;
}

/* 专题网格 */
.special-grid-section {
  margin-bottom: 48px;
}

.special-grid-section h2 {
  font-size: 22px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-black);
  position: relative;
}

.special-grid-section h2::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background-color: var(--color-accent);
}

.special-grid-section .special-grid {
  grid-template-columns: repeat(3, 1fr);
}

.special-card h3 {
  font-size: 17px;
  padding: 16px 16px 0;
  margin-bottom: 8px;
}

.special-card > p {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.6;
  padding: 0 16px;
  margin-bottom: 12px;
}

.special-card > a {
  display: inline-block;
  margin: 0 16px 16px;
  color: var(--color-accent);
  font-size: 14px;
  font-weight: 600;
}

/* 相关列表 */
.related-list {
  display: flex;
  flex-direction: column;
}

.related-list li {
  border-bottom: 1px solid var(--color-gray-200);
}

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

.related-list a {
  display: block;
  padding: 12px 0;
  font-size: 15px;
  color: var(--color-gray-700);
}

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

/* 来源说明 */
.source-note {
  margin-top: 40px;
  padding: 24px;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-md);
}

.source-note h2 {
  font-size: 18px;
  margin-bottom: 10px;
}

.source-note p {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ============================================================
   pages — 实用指南 (practical-guides)
   ============================================================ */
.layout-shell {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

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

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

.guide-article h2 {
  font-size: 22px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-black);
  position: relative;
}

.guide-article h2::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background-color: var(--color-accent);
}

.guide-article p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-gray-700);
}

/* 步骤列表 */
.verification-steps,
.response-steps {
  counter-reset: step-counter;
  margin-top: 20px;
}

.verification-steps li,
.response-steps li {
  position: relative;
  padding: 20px 20px 20px 56px;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  counter-increment: step-counter;
}

.verification-steps li::before,
.response-steps li::before {
  content: counter(step-counter);
  position: absolute;
  left: 16px;
  top: 20px;
  width: 28px;
  height: 28px;
  background-color: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
}

.verification-steps h3,
.response-steps h3 {
  font-size: 16px;
  margin-bottom: 6px;
}

.verification-steps p,
.response-steps p {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.6;
  margin-bottom: 0;
}

/* 检查清单 */
.checklist-section {
  margin-top: 40px;
}

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

.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-sm);
  font-size: 15px;
  line-height: 1.6;
}

.checklist li::before {
  content: "";
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  margin-top: 2px;
}

/* 侧栏 */
.sidebar-note {
  min-width: 0;
}

.side-card {
  background-color: var(--color-gray-100);
  border-radius: var(--radius-md);
  padding: 24px;
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.side-card h2 {
  font-size: 18px;
  margin-bottom: 12px;
}

.side-card p {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: 16px;
}

.side-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

/* 相关资源 */
.related-resources {
  margin-top: 32px;
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: 20px;
}

.related-resources h2 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-gray-200);
}

.related-resources ul li {
  border-bottom: 1px solid var(--color-gray-200);
}

.related-resources ul li:last-child {
  border-bottom: none;
}

.related-resources ul a {
  display: block;
  padding: 10px 0;
  font-size: 14px;
  color: var(--color-gray-700);
}

.related-resources ul a:hover {
  color: var(--color-accent);
}

/* 底部相关 */
.practical-guides-page .related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.related-links-label {
  font-size: 15px;
  font-weight: 700;
  margin-right: 8px;
}

.related-links-item {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--color-gray-700);
  background-color: var(--color-white);
  min-height: 40px;
  line-height: 1.4;
}

.related-links-item:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ============================================================
   pages — 深度解读 (deep-dives)
   ============================================================ */
.analysis-section {
  margin-bottom: 48px;
}

.analysis-section h2 {
  font-size: 22px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-black);
  position: relative;
}

.analysis-section h2::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background-color: var(--color-accent);
}

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

.analysis-item {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  padding: 24px;
}

.analysis-item h3 {
  font-size: 18px;
  margin-bottom: 12px;
}

.analysis-item p {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: 16px;
}

.media-figure {
  border-radius: var(--radius-sm);
  overflow: hidden;
  background-color: var(--color-gray-100);
  aspect-ratio: 16 / 9;
}

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

.media-figure figcaption {
  font-size: 12px;
  color: var(--color-gray-500);
  padding: 8px 12px;
  background-color: var(--color-gray-100);
}

/* 影响评估 */
.impact-section {
  margin-bottom: 48px;
}

.impact-section h2 {
  font-size: 22px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-black);
  position: relative;
}

.impact-section h2::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background-color: var(--color-accent);
}

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

.impact-item {
  background-color: var(--color-gray-100);
  border-radius: var(--radius-md);
  padding: 24px;
  border-top: 3px solid var(--color-accent);
}

.impact-item h3 {
  font-size: 16px;
  margin-bottom: 10px;
}

.impact-item p {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: 0;
}

/* 多角度 */
.multi-angle-section {
  margin-bottom: 48px;
}

.multi-angle-section h2 {
  font-size: 22px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-black);
  position: relative;
}

.multi-angle-section h2::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background-color: var(--color-accent);
}

.angle-block {
  margin-bottom: 24px;
  padding: 24px;
  border-left: 3px solid var(--color-accent);
  background-color: var(--color-gray-100);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.angle-block h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.angle-block p {
  font-size: 15px;
  color: var(--color-gray-700);
  line-height: 1.8;
  margin-bottom: 0;
}

/* 结论 */
.conclusion-section {
  margin-bottom: 48px;
  padding: 32px;
  background-color: var(--color-black);
  color: var(--color-white);
  border-radius: var(--radius-md);
}

.conclusion-section h2 {
  font-size: 22px;
  margin-bottom: 16px;
  color: var(--color-white);
}

.conclusion-section p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-gray-300);
  margin-bottom: 12px;
}

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

/* 相关推荐 */
.related-section {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-gray-200);
}

.related-section h2 {
  font-size: 18px;
  margin-bottom: 16px;
}

.related-section .related-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.related-section .related-list li {
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.related-section .related-list a {
  display: block;
  padding: 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-black);
  line-height: 1.5;
}

.related-section .related-list a:hover {
  background-color: var(--color-gray-100);
  color: var(--color-accent);
}

/* ============================================================
   pages — 关于本站 (about)
   ============================================================ */
.about-intro {
  margin-bottom: 48px;
}

.intro-content {
  max-width: 760px;
}

.intro-content p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-gray-700);
  margin-bottom: 1em;
}

.intro-media {
  margin-top: 24px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-gray-100);
  aspect-ratio: 16 / 7;
}

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

.intro-media figcaption {
  font-size: 13px;
  color: var(--color-gray-500);
  padding: 10px 16px;
  background-color: var(--color-gray-100);
}

/* 内容原则 */
.about-principles {
  margin-bottom: 48px;
}

.principles-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.principle-item {
  background-color: var(--color-gray-100);
  border-radius: var(--radius-md);
  padding: 24px;
  border-bottom: 3px solid var(--color-accent);
}

.principle-item h3 {
  font-size: 16px;
  margin-bottom: 10px;
}

.principle-item p {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: 0;
}

/* 编辑理念 */
.about-editorial {
  margin-bottom: 48px;
}

.editorial-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  align-items: start;
}

.editorial-text p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-gray-700);
  margin-bottom: 1em;
}

.editorial-aside {
  background-color: var(--color-gray-100);
  border-radius: var(--radius-md);
  padding: 24px;
}

.editorial-aside h3 {
  font-size: 16px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-gray-300);
}

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

.editorial-links a {
  font-size: 14px;
  color: var(--color-gray-700);
}

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

.aside-note {
  font-size: 13px;
  color: var(--color-gray-500);
  line-height: 1.6;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--color-gray-300);
}

/* 相关入口 */
.related-entry {
  margin-top: 40px;
}

.related-entry .related-grid {
  grid-template-columns: repeat(3, 1fr);
}

.related-entry .related-card {
  padding: 20px;
}

.related-entry .related-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
}

.related-entry .related-card p {
  font-size: 14px;
  color: var(--color-gray-500);
  line-height: 1.6;
  margin-bottom: 0;
}

/* ============================================================
   pages — 404
   ============================================================ */
.error-main {
  padding: 80px 24px;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.error-code {
  font-size: 64px;
  font-weight: 700;
  color: var(--color-accent);
  font-family: var(--font-serif);
  line-height: 1;
  margin-bottom: 16px;
}

.error-section h1 {
  font-size: 28px;
  margin-bottom: 12px;
}

.error-desc {
  font-size: 16px;
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: 24px;
}

.btn-back-home {
  background-color: var(--color-black);
  color: var(--color-white);
  margin-bottom: 32px;
}

.btn-back-home:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.error-suggestion {
  font-size: 14px;
  color: var(--color-gray-500);
}

.error-suggestion a {
  color: var(--color-gray-700);
  margin: 0 8px;
  text-decoration: underline;
}

.error-suggestion a:hover {
  color: var(--color-accent);
}

/* ============================================================
   responsive — 响应式（≤1024px / ≤768px / ≤390px）
   ============================================================ */
@media (max-width: 1024px) {
  .timeline-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

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

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

  .hero-section {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

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

  .sidebar-note {
    order: 2;
  }

  .side-card {
    position: static;
  }

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

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

  .topic-filter {
    order: 2;
  }

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

  .featured-image {
    aspect-ratio: 16 / 9;
  }

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

@media (max-width: 768px) {
  .header-inner {
    height: auto;
    min-height: var(--header-height);
    padding: 8px 16px;
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: flex;
    order: 3;
  }

  .site-nav {
    order: 4;
    width: 100%;
    flex-basis: 100%;
  }

  .site-nav .nav-list {
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 8px 0;
    border-top: 1px solid var(--color-gray-200);
    margin-top: 8px;
  }

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

  .site-nav .nav-list a {
    padding: 12px 8px;
    font-size: 16px;
    border-radius: 0;
  }

  .brand-tagline {
    display: none;
  }

  .site-main,
  .inner-main {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-section {
    padding: 32px 0;
  }

  .hero-title {
    font-size: 28px;
  }

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

  .hero-actions .btn-primary,
  .hero-actions .btn-secondary {
    text-align: center;
  }

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

  .focus-text {
    padding: 20px;
  }

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

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

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

  .special-grid-section .special-grid {
    grid-template-columns: 1fr;
  }

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

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

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

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

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

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

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

  .update-item article {
    grid-template-columns: 1fr;
  }

  .update-item time {
    white-space: normal;
  }

  .hot-topics-layout .update-item article {
    grid-template-columns: 1fr;
  }

  .update-thumb {
    max-width: 200px;
  }

  .pagination {
    flex-wrap: wrap;
  }

  .source-feedback {
    padding: 24px;
  }

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

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

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

@media (max-width: 390px) {
  html {
    font-size: 15px;
  }

  .header-inner {
    gap: 12px;
  }

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

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

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

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

  .page-description {
    font-size: 14px;
  }

  .section-title,
  .focus-report h2,
  .latest-updates h2,
  .special-recommend h2,
  .editor-picks h2,
  .featured-specials h2,
  .special-grid-section h2,
  .guide-article h2,
  .analysis-section h2,
  .impact-section h2,
  .multi-angle-section h2 {
    font-size: 19px;
  }

  .timeline-card,
  .impact-item,
  .principle-item {
    padding: 16px;
  }

  .conclusion-section {
    padding: 24px;
  }

  .verification-steps li,
  .response-steps li {
    padding: 16px 16px 16px 48px;
  }

  .verification-steps li::before,
  .response-steps li::before {
    left: 12px;
    top: 16px;
    width: 24px;
    height: 24px;
    font-size: 13px;
  }

  .checklist li {
    font-size: 14px;
  }

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

  .error-code {
    font-size: 40px;
  }
}

/* ============================================================
   动效增强 — 不影响初始可见性
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .focus-card,
  .special-card,
  .featured-card,
  .timeline-card,
  .related-card {
    transition: box-shadow 0.2s ease, transform 0.2s ease;
  }

  .focus-card:hover,
  .special-card:hover,
  .featured-card:hover,
  .timeline-card:hover,
  .related-card:hover {
    transform: translateY(-2px);
  }
}