/* ---------- CSS变量定义 ---------- */
:root {
  /* 品牌色彩 */
  --color-primary: #e53935;
  --color-primary-dark: #c62828;
  --color-primary-light: #ef5350;
  --color-secondary: #ff5722;
  
  /* 中性色 */
  --color-white: #ffffff;
  --color-black: #333333;
  --color-gray-100: #f5f5f5;
  --color-gray-200: #eeeeee;
  --color-gray-300: #e0e0e0;
  --color-gray-400: #bdbdbd;
  --color-gray-500: #9e9e9e;
  --color-gray-600: #757575;
  --color-gray-700: #616161;
  
  /* 文字颜色 */
  --text-primary: #333333;
  --text-secondary: #666666;
  --text-muted: #999999;
  --text-link: #e53935;
  --text-link-hover: #c62828;
  
  /* 布局 */
  --header-height: 64px;
  --nav-height: 56px;
  --container-max-width: 1200px;
  --container-padding: 15px;
  
  /* 间距 */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;
  
  /* 字体 */
  --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-xxl: 24px;
  --font-size-h1: 32px;
  --font-size-h2: 28px;
  --font-size-h3: 22px;
  
  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 20px rgba(0,0,0,0.1);
  
  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* z-index层级 */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-tooltip: 400;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--color-gray-100);
  min-height: 100vh;
}

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--text-link-hover);
}

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ---------- 工具类 ---------- */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Flex工具类 */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-center {
  justify-content: center;
}

.flex-wrap {
  flex-wrap: wrap;
}

.gap-sm {
  gap: var(--space-sm);
}

.gap-md {
  gap: var(--space-md);
}

.gap-lg {
  gap: var(--space-lg);
}

/* 文字工具类 */
.text-center {
  text-align: center;
}

.text-sm {
  font-size: var(--font-size-sm);
}

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

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- 顶部导航栏 ---------- */
.top-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.top-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

/* Logo区域 */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: bold;
  font-size: var(--font-size-xl);
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 1px;
}

.logo-text span {
  color: var(--text-primary);
}

/* 搜索框 */
.search-box {
  flex: 1;
  max-width: 400px;
  margin: 0 var(--space-lg);
  position: relative;
}

.search-box input {
  width: 100%;
  height: 40px;
  padding: 0 var(--space-lg) 0 var(--space-md);
  border: 1px solid var(--color-gray-300);
  border-radius: 20px;
  background: var(--color-gray-100);
  transition: all var(--transition-fast);
}

.search-box input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-white);
}

.search-box button {
  position: absolute;
  right: var(--space-sm);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.search-box button:hover {
  color: var(--color-primary);
}

/* 顶部右侧导航 */
.top-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.top-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  transition: color var(--transition-fast);
}

.top-nav-item i {
  font-size: 22px;
  color: var(--color-primary);
}

.top-nav-item:hover {
  color: var(--color-primary);
}

/* ---------- 主导航菜单 ---------- */
.main-nav {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
}

.main-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.nav-item {
  position: relative;
}

.nav-item > a {
  display: block;
  padding: 0 var(--space-lg);
  height: var(--nav-height);
  line-height: var(--nav-height);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.nav-item:hover > a,
.nav-item.active > a {
  color: var(--color-primary);
}

.nav-item.active > a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--space-lg);
  right: var(--space-lg);
  height: 3px;
  background: var(--color-primary);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  padding: var(--space-sm);
  color: var(--text-primary);
  font-size: var(--font-size-xl);
}

/* ---------- 次级导航（红色背景） ---------- */
.sub-nav {
  background: var(--color-primary);
  padding: var(--space-sm) 0;
}

.sub-nav .container {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-xs) var(--space-md);
}

.sub-nav a {
  color: var(--color-white);
  font-size: var(--font-size-sm);
  padding: var(--space-xs) 0;
  text-align: center;
  transition: opacity var(--transition-fast);
}

.sub-nav a:hover {
  opacity: 0.8;
  text-decoration: none !important;
}

/* ---------- 面包屑导航 ---------- */
.breadcrumb {
  background: var(--color-gray-100);
  padding: var(--space-sm) 0;
}

.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

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

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

.breadcrumb-separator {
  color: var(--color-gray-400);
}

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

/* ---------- 主要内容区域 ---------- */
.main-content {
  padding: var(--space-lg) 0;
}

.main-content .container {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: var(--space-xl);
}

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

/* ---------- 文章详情页 ---------- */
.article-detail {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
}

.article-header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-gray-200);
}

.article-title {
  font-size: var(--font-size-h2);
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  flex-wrap: wrap;
}

.meta-info {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.meta-info > span {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  white-space: nowrap;
}

.article-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.article-actions > span {
  white-space: nowrap;
}

.share-btn {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: var(--font-size-sm);
  transition: transform var(--transition-fast);
}

.share-btn:hover {
  transform: translateY(-2px);
}

.share-btn.wechat { background: #07c160; }
.share-btn.weibo { background: #e6162d; }
.share-btn.qq { background: #12b7f5; }
.share-btn.douyin { background: #000000; }

/* 文章操作区分享按钮悬停颜色保持统一 - 覆盖全局a:hover */
.article-actions a:hover {
  color: var(--color-white);
}

/* 文章内容 */
.article-body {
  font-size: var(--font-size-base);
  line-height: 1.8;
  color: var(--text-primary);
}

.article-body p {
  margin-bottom: var(--space-md);
  text-indent: 2em;
}

.article-body img {
  max-width: 100%;
  margin: var(--space-lg) auto;
  border-radius: var(--radius-sm);
}

.article-notice {
  background: var(--color-gray-100);
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  margin: var(--space-lg) 0;
  font-size: var(--font-size-sm);
}

.article-notice ol {
  list-style: decimal;
  padding-left: var(--space-lg);
}

.article-notice li {
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
}

/* ---------- 侧边栏 ---------- */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* 侧边栏卡片 */
.sidebar-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.sidebar-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-gray-200);
}

.sidebar-card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.sidebar-card-title::before {
  content: '';
  width: 4px;
  height: 18px;
  background: var(--color-primary);
  border-radius: 2px;
}

.btn-more {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.btn-more:hover {
  color: var(--color-primary);
}

.sidebar-card-body {
  padding-block: 6px;
  padding-inline: var(--space-md);
}

/* 侧边栏图片链接 - 左右分栏布局 */
.sidebar-image-link {
  display: flex;
  gap: 12px;
  margin-bottom: 10px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  background: var(--color-white);
  transition: all var(--transition-fast);
}

.sidebar-image-link:last-child {
  margin-bottom: 0;
}

.sidebar-image-link:hover {
  background: var(--color-gray-100);
}

.sidebar-image-link img {
  width: 100px;
  height: 68px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  transition: transform var(--transition-normal);
}

.sidebar-image-link:hover img {
  transform: scale(1.03);
}

.sidebar-image-link .content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
  min-width: 0;
  padding: 2px 0;
  gap: 4px;
}

.sidebar-image-link .content h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition-fast);
}

.sidebar-image-link:hover .content h4 {
  color: var(--color-primary);
}

.sidebar-image-link .content .meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.sidebar-image-link .content .meta span {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.sidebar-image-link .content .meta i {
  font-size: var(--font-size-xs);
}

/* ---------- 新增模块：热点新闻 ---------- */
.hot-news-item {
  display: block;
  padding: 8px;
  border-radius: var(--radius-sm);
  background: var(--color-white);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.hot-news-item:hover {
  background: var(--color-gray-100);
}

.hot-news-item img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  transition: transform var(--transition-normal);
}

.hot-news-item:hover img {
  transform: scale(1.02);
}

.hot-news-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
  transition: color var(--transition-fast);
}

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

.hot-news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.hot-news-meta span {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.hot-news-meta i {
  font-size: var(--font-size-xs);
}

/* ---------- 新增模块：推荐阅读 ---------- */
.recommend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: var(--radius-sm);
  background: var(--color-white);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.recommend-item:hover {
  background: var(--color-gray-100);
}

.recommend-num {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-white);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.recommend-num.num-1 { background: #e53935; }
.recommend-num.num-2 { background: #ff5722; }
.recommend-num.num-3 { background: #ffc107; }
.recommend-num.num-4 { background: #4caf50; }
.recommend-num.num-5 { background: #2196f3; }
.recommend-num.num-6 { background: #9c27b0; }

.recommend-title {
  flex: 1;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition-fast);
  min-width: 0;
}

.recommend-item:hover .recommend-title {
  color: var(--color-primary);
}

.recommend-date {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.recommend-date i {
  font-size: var(--font-size-xs);
}

/* ---------- 列表页样式 ---------- */
.news-list {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
}

.list-header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--color-primary);
}

.list-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
}

.news-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-gray-200);
  transition: background var(--transition-fast);
}

/* 无缩略图项目 - 单列布局 */
.news-item:has(.news-item-image) {
  grid-template-columns: 200px 1fr;
}

.news-item:not(:has(.news-item-image)) {
  grid-template-columns: 1fr;
}

/* 旧浏览器兼容：通过类名控制无图布局 */
.news-item.no-image {
  grid-template-columns: 1fr;
}

.news-item:hover {
  background: var(--color-gray-100);
  margin: 0 calc(-1 * var(--space-md));
  padding-left: var(--space-md);
  padding-right: var(--space-md);
  border-radius: var(--radius-sm);
}

.news-item-image {
  width: 200px;
  height: 130px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.news-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.news-item:hover .news-item-image img {
  transform: scale(1.05);
}

.news-item-content {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.news-item-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: var(--space-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.news-item-summary {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: var(--space-sm);
}

/* ---------- 纯CSS分页样式 ---------- */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-gray-200);
}

/* 分页结构: ul > li > (a|span) */
.pagination ul {
  display: flex;
  gap: var(--space-xs);
}

.pagination li {
  display: inline-block;
}

/* 链接样式 */
.pagination li > a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 var(--space-sm);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.pagination li > a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-white);
}

.pagination li > a:active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.pagination li > a:visited {
  color: var(--text-secondary);
}

/* 当前页样式 (span) */
.pagination li > span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 var(--space-sm);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* 上一页/下一页 */
.pagination li:first-child > a,
.pagination li:last-child > a {
  padding: 0 var(--space-md);
}

/* ---------- 首页样式 ---------- */
.hero-section {
  margin-bottom: var(--space-xl);
}

.hero-slider {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 400px;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
}

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

.hero-slide-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-xl);
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  color: var(--color-white);
}

.hero-slide-title {
  font-size: var(--font-size-h2);
  font-weight: 700;
  margin-bottom: var(--space-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hero-slide-title a {
  color: var(--color-white);
}

.hero-slide-title a:hover {
  color: var(--color-white);
  opacity: 0.8;
}

.hero-slide-summary {
  font-size: var(--font-size-base);
  opacity: 0.9;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 轮播控制 */
.hero-slider-dots {
  position: absolute;
  bottom: var(--space-md);
  right: var(--space-lg);
  display: flex;
  gap: var(--space-sm);
}

.hero-slider-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.hero-slider-dot.active,
.hero-slider-dot:hover {
  background: var(--color-white);
}

.hero-slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(0,0,0,0.3);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  cursor: pointer;
  opacity: 0;
  transition: all var(--transition-fast);
}

.hero-slider:hover .hero-slider-arrow {
  opacity: 1;
}

.hero-slider-arrow:hover {
  background: rgba(0,0,0,0.6);
}

.hero-slider-arrow.prev { left: var(--space-md); }
.hero-slider-arrow.next { right: var(--space-md); }

/* 首页内容网格 */
.home-section {
  margin-bottom: var(--space-xl);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-primary);
}

.section-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.section-title::before {
  content: '';
  width: 4px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* 新闻网格 - 严格三行布局 */
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.news-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

/* 第一行：居中图片 */
.news-card-image {
  width: 100%;
  height: 180px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 15px 15px 0 15px;
  box-sizing: border-box;
}

.news-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
  transition: transform var(--transition-normal);
}

.news-card:hover .news-card-image img {
  transform: scale(1.03);
}

/* 第二、三行：内容区域统一边距 */
.news-card-content {
  padding: 15px;
  display: flex;
  flex-direction: column;
  gap: 0;
  line-height: 1.5;
}

/* 第二行：加粗标题 */
.news-card-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: calc(var(--font-size-base) * 1.5 * 2);
}

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

/* 第三行：日期和阅读量左右对齐 */
.news-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: 0;
  padding-top: 0;
  line-height: 1.5;
}

.news-card-meta .date {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.news-card-meta .views {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* 首页侧边栏 */
.home-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.quick-links {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.quick-links-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-gray-200);
}

.quick-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.quick-link-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  background: var(--color-gray-100);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.quick-link-item i {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
}

.quick-link-item:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.quick-link-item:hover i {
  color: var(--color-white);
}

/* ---------- 底部 ---------- */
.footer {
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-200);
  margin-top: var(--space-xxl);
}

.footer-links {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.footer-links-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.footer-links-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-links-list a {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

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

.footer-bottom {
  padding: var(--space-lg) 0;
  text-align: center;
}

.footer-copyright {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.footer-copyright p {
  margin-bottom: var(--space-xs);
}

.footer-badges {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer-badges img {
  height: 40px;
  width: auto;
}

/* ---------- 回到顶部按钮 ---------- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  cursor: pointer;
  font-size: var(--font-size-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
  z-index: var(--z-sticky);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.back-to-top:active {
  transform: translateY(0);
}

/* ---------- 湖南招考 - 严格两栏布局 ---------- */
.news-list-horizontal {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.news-item-horizontal {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 20px;
  padding: 15px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  line-height: 1.5;
}

.news-item-horizontal:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* 左侧栏：固定宽度图片 */
.news-item-horizontal .item-image {
  width: 200px;
  height: 130px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.news-item-horizontal .item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.news-item-horizontal:hover .item-image img {
  transform: scale(1.05);
}

/* 右侧栏：三行内容 */
.news-item-horizontal .item-content {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 130px;
  gap: 0;
}

/* 第一行：加粗标题 */
.news-item-horizontal .item-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

/* 第二行：文章摘要 */
.news-item-horizontal .item-summary {
  font-size: var(--font-size-sm);
  font-weight: 400;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
  margin-top: 8px;
}

/* 第三行：时间和阅读量，底部对齐 */
.news-item-horizontal .item-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  line-height: 1.5;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--color-gray-200);
}

.news-item-horizontal .item-meta .date,
.news-item-horizontal .item-meta .views {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* ---------- 今日动态模块 ---------- */
.today-news-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.today-news-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.today-news-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* 左侧序号区域 - 固定宽度 */
.today-news-index {
  flex-shrink: 0;
  width: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 序号徽章 - 圆角按钮样式 */
.index-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-base);
  font-weight: 700;
  border-radius: var(--radius-md);
}

/* 前三名使用不同颜色 */
.today-news-item:nth-child(1) .index-badge {
  background: #ffc107;
}

.today-news-item:nth-child(2) .index-badge {
  background: #4caf50;
}

.today-news-item:nth-child(3) .index-badge {
  background: #2196f3;
}

/* 右侧内容区域 */
.today-news-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

/* 文章标题 - 加粗显示 */
.today-news-title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition-fast);
}

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

/* 元信息行 */
.today-news-meta {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

.today-news-meta .meta-time,
.today-news-meta .meta-views {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.today-news-meta i {
  font-size: var(--font-size-xs);
}

/* ---------- 响应式设计 ---------- */
@media (max-width: 991px) {
  :root {
    --container-padding: 12px;
  }
  
  .main-content .container {
    grid-template-columns: 1fr;
  }
  
  .sidebar {
    order: 2;
  }
  
  .sub-nav .container {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .news-grid {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .news-card-image {
    height: 200px;
    padding: 12px 12px 0 12px;
  }

  .news-card-content {
    padding: 12px;
  }
  
  .hero-slider {
    height: 300px;
  }
  
  .news-item:has(.news-item-image) {
    grid-template-columns: 140px 1fr;
  }

  .news-item:not(:has(.news-item-image)),
  .news-item.no-image {
    grid-template-columns: 1fr;
  }

  .news-item-image {
    width: 140px;
    height: 90px;
  }

  /* 平板端热点新闻适配 */
  .hot-news-item img {
    height: 160px;
  }

  /* 平板端推荐阅读适配 */
  .recommend-item {
    padding: 10px;
  }

  .recommend-title {
    font-size: var(--font-size-base);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 72px;
  }
  
  /* 移动端顶部导航 - 左右分布布局 */
  .top-header .container {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    padding: 0 var(--space-md);
    position: relative;
  }

  .logo {
    order: 1;
    flex-shrink: 0;
    margin-right: auto;
    transition: transform 0.3s ease;
  }

  .logo:hover {
    transform: scale(1.02);
  }

  .mobile-menu-btn {
    display: flex;
    order: 2;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    transition: all 0.3s ease;
    margin-left: var(--space-sm);
  }

  .mobile-menu-btn:hover {
    background: var(--color-gray-100);
    color: var(--color-primary);
    transform: rotate(90deg);
  }

  .mobile-menu-btn:active {
    transform: scale(0.95);
  }

  .search-box {
    display: none;
  }
  
  .top-nav {
    display: none;
  }
  
  .main-nav {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    z-index: var(--z-dropdown);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    pointer-events: none;
  }

  .main-nav.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }

  /* 汉堡菜单按钮打开状态 */
  .mobile-menu-btn.active {
    background: var(--color-primary);
    color: var(--color-white);
    transform: rotate(180deg);
  }

  .mobile-menu-btn.active:hover {
    background: var(--color-primary-dark);
    transform: rotate(180deg);
  }
  
  .main-nav .container {
    flex-direction: column;
  }
  
  .nav-menu {
    flex-direction: column;
    width: 100%;
  }
  
  .nav-item {
    width: 100%;
    border-bottom: 1px solid var(--color-gray-200);
  }
  
  .nav-item > a {
    height: 44px;
    line-height: 44px;
  }
  
  .nav-item.active > a::after {
    display: none;
  }
  
  .sub-nav {
    display: none;
  }
  
  .hero-slider {
    height: 220px;
  }
  
  .hero-slide-title {
    font-size: var(--font-size-lg);
  }
  
  .hero-slide-summary {
    display: none;
  }
  
  .article-detail {
    padding: var(--space-md);
  }
  
  .article-title {
    font-size: var(--font-size-xl);
  }
  
  .article-meta {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-sm);
  }

  .meta-info {
    width: 100%;
    justify-content: flex-start;
    gap: var(--space-sm) var(--space-md);
  }

  .article-actions {
    margin-left: 0;
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-gray-200);
    width: 100%;
    justify-content: flex-start;
  }
  
  .news-list {
    padding: var(--space-md);
  }

  .news-item:has(.news-item-image) {
    grid-template-columns: 100px 1fr;
  }

  .news-item:not(:has(.news-item-image)),
  .news-item.no-image {
    grid-template-columns: 1fr;
  }

  .news-item-image {
    width: 100px;
    height: 70px;
  }

  /* 湖南招考两栏布局 - 移动端适配 */
  .news-item-horizontal {
    grid-template-columns: 120px 1fr;
    gap: 12px;
    padding: 12px;
  }

  .news-item-horizontal .item-image {
    width: 120px;
    height: 80px;
  }

  .news-item-horizontal .item-content {
    min-height: 80px;
  }

  .news-item-horizontal .item-title {
    font-size: var(--font-size-base);
    -webkit-line-clamp: 2;
  }

  .news-item-horizontal .item-summary {
    font-size: var(--font-size-xs);
    -webkit-line-clamp: 1;
    margin-top: 4px;
  }

  .news-item-horizontal .item-meta {
    margin-top: 4px;
    padding-top: 4px;
  }
  
  .news-item-title {
    font-size: var(--font-size-base);
    -webkit-line-clamp: 2;
  }
  
  .news-item-summary {
    display: none;
  }
  
  .sidebar-card-body {
    padding-block: 6px;
    padding-inline: var(--space-md);
  }

  /* 热点新闻移动端适配 */
  .hot-news-item img {
    height: 120px;
  }

  .hot-news-title {
    font-size: var(--font-size-sm);
    -webkit-line-clamp: 2;
  }

  .hot-news-meta {
    font-size: 11px;
  }

  /* 推荐阅读移动端适配 */
  .recommend-item {
    padding: 6px;
    gap: 8px;
  }

  .recommend-num {
    width: 20px;
    height: 20px;
    font-size: 12px;
  }

  .recommend-title {
    font-size: var(--font-size-sm);
  }

  .recommend-date {
    font-size: 11px;
  }

  /* 今日动态模块 - 移动端适配 */
  .today-news-item {
    padding: var(--space-sm);
    gap: var(--space-sm);
  }

  .today-news-index {
    width: 40px;
  }

  .index-badge {
    width: 32px;
    height: 32px;
    font-size: var(--font-size-sm);
  }

  .today-news-title {
    font-size: var(--font-size-sm);
    -webkit-line-clamp: 2;
  }

  .today-news-meta {
    font-size: var(--font-size-xs);
    gap: var(--space-sm);
  }

  .quick-links-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-links-list {
    gap: var(--space-sm);
  }
  
  .pagination {
    flex-wrap: wrap;
  }
  
  .pagination ul {
    flex-wrap: wrap;
    justify-content: center;
  }
}

/* ---------- 动画 ---------- */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.5s ease forwards;
}

/* ---------- 打印样式 ---------- */
@media print {
  .top-header,
  .main-nav,
  .sub-nav,
  .breadcrumb,
  .sidebar,
  .footer,
  .article-actions {
    display: none !important;
  }
  
  .main-content .container {
    grid-template-columns: 1fr;
  }
  
  .article-detail {
    box-shadow: none;
    padding: 0;
  }
}