/* =============================================
   捷克街头 - 主样式文件
   y3gh1r.cn
   ============================================= */

/* CSS变量 */
:root {
  --green-primary: #1a6b3a;
  --green-dark: #0f4a28;
  --green-light: #2d9b57;
  --green-pale: #e8f5ee;
  --green-accent: #4caf50;
  --gold: #d4a843;
  --text-dark: #1a1a1a;
  --text-gray: #555;
  --text-light: #888;
  --bg-white: #fff;
  --bg-light: #f8faf9;
  --bg-dark: #0d1f15;
  --border: #dde8e2;
  --shadow: 0 2px 12px rgba(26,107,58,0.10);
  --shadow-hover: 0 8px 32px rgba(26,107,58,0.20);
  --radius: 10px;
  --radius-lg: 18px;
  --transition: all 0.3s ease;
}

/* 重置 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--green-primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--green-light); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* =============================================
   顶部公告栏
   ============================================= */
.top-bar {
  background: var(--green-dark);
  color: rgba(255,255,255,0.85);
  font-size: 13px;
  padding: 6px 0;
  text-align: center;
}
.top-bar a { color: var(--gold); }

/* =============================================
   头部导航
   ============================================= */
.site-header {
  background: var(--bg-white);
  border-bottom: 2px solid var(--green-primary);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 16px rgba(26,107,58,0.08);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.site-logo img {
  height: 44px;
  width: auto;
}
.site-logo .logo-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--green-primary);
  letter-spacing: 1px;
}
.site-logo .logo-sub {
  font-size: 11px;
  color: var(--text-light);
  display: block;
  line-height: 1;
}

/* 主导航 */
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  color: var(--text-dark);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 6px;
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav a:hover,
.main-nav a.active {
  background: var(--green-primary);
  color: #fff;
}

/* 移动菜单按钮 */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--green-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* =============================================
   搜索框
   ============================================= */
.search-bar-wrap {
  background: var(--green-pale);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.search-form {
  display: flex;
  align-items: center;
  background: #fff;
  border: 2px solid var(--green-primary);
  border-radius: 30px;
  overflow: hidden;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
}
.search-form input {
  flex: 1;
  border: none;
  outline: none;
  padding: 8px 18px;
  font-size: 14px;
  color: var(--text-dark);
  background: transparent;
}
.search-form button {
  background: var(--green-primary);
  color: #fff;
  border: none;
  padding: 9px 22px;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 600;
}
.search-form button:hover { background: var(--green-dark); }

/* =============================================
   面包屑
   ============================================= */
.breadcrumb-wrap {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.breadcrumb {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-light);
}
.breadcrumb a { color: var(--green-primary); }
.breadcrumb .sep { color: var(--text-light); }
.breadcrumb .current { color: var(--text-dark); font-weight: 500; }

/* =============================================
   Hero Banner
   ============================================= */
.hero-banner {
  position: relative;
  overflow: hidden;
  background: var(--bg-dark);
  min-height: 520px;
  display: flex;
  align-items: center;
}
.hero-banner .banner-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
}
.hero-banner .banner-slide.active { opacity: 1; }
.hero-banner .banner-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-banner .banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(13,31,21,0.85) 0%, rgba(13,31,21,0.4) 60%, transparent 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 20px;
  width: 100%;
}
.hero-content .tag {
  display: inline-block;
  background: var(--gold);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.hero-content h1 {
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 16px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.hero-content p {
  font-size: 17px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 28px;
  max-width: 560px;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: var(--green-primary);
  color: #fff;
  padding: 13px 32px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 700;
  border: 2px solid var(--green-primary);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary:hover {
  background: var(--green-dark);
  border-color: var(--green-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}
.btn-outline {
  background: transparent;
  color: #fff;
  padding: 13px 32px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 700;
  border: 2px solid rgba(255,255,255,0.7);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  color: #fff;
}
.banner-dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 3;
}
.banner-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
  transition: var(--transition);
}
.banner-dots span.active {
  background: #fff;
  width: 24px;
  border-radius: 4px;
}

/* =============================================
   统计数字条
   ============================================= */
.stats-bar {
  background: var(--green-primary);
  padding: 20px 0;
}
.stats-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 20px;
}
.stat-item { text-align: center; color: #fff; }
.stat-item .num {
  font-size: 32px;
  font-weight: 900;
  line-height: 1;
  color: var(--gold);
}
.stat-item .label {
  font-size: 13px;
  opacity: 0.85;
  margin-top: 4px;
}

/* =============================================
   通用容器
   ============================================= */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}
.section { padding: 60px 0; }
.section-sm { padding: 40px 0; }
.section-title {
  text-align: center;
  margin-bottom: 40px;
}
.section-title h2 {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 10px;
}
.section-title h2 span { color: var(--green-primary); }
.section-title p {
  font-size: 15px;
  color: var(--text-gray);
  max-width: 600px;
  margin: 0 auto;
}
.section-title .line {
  width: 60px;
  height: 4px;
  background: var(--green-primary);
  border-radius: 2px;
  margin: 12px auto 0;
}

/* =============================================
   视频卡片
   ============================================= */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.video-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: #111;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
.play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0);
  transition: var(--transition);
}
.play-btn .play-icon {
  width: 54px;
  height: 54px;
  background: rgba(255,255,255,0.92);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.7);
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.play-btn .play-icon::after {
  content: '';
  border-left: 20px solid var(--green-primary);
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  margin-left: 4px;
}
.video-card:hover .play-btn { background: rgba(0,0,0,0.25); }
.video-card:hover .play-icon {
  opacity: 1;
  transform: scale(1);
}
.video-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--green-primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 4px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  font-size: 12px;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-info { padding: 14px; }
.video-info h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-light);
}
.video-meta .author { display: flex; align-items: center; gap: 4px; }
.video-stats { display: flex; gap: 12px; font-size: 12px; color: var(--text-light); margin-top: 6px; }
.video-stats span { display: flex; align-items: center; gap: 3px; }

/* =============================================
   新闻卡片
   ============================================= */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.news-card {
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.news-card .news-img {
  aspect-ratio: 16/9;
  overflow: hidden;
}
.news-card .news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-card:hover .news-img img { transform: scale(1.05); }
.news-body { padding: 18px; }
.news-cat {
  display: inline-block;
  background: var(--green-pale);
  color: var(--green-primary);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 10px;
}
.news-body h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-body h3 a { color: var(--text-dark); }
.news-body h3 a:hover { color: var(--green-primary); }
.news-excerpt {
  font-size: 13px;
  color: var(--text-gray);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}
.news-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-light);
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.news-footer a {
  color: var(--green-primary);
  font-weight: 600;
  font-size: 13px;
}

/* =============================================
   专家卡片
   ============================================= */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.expert-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}
.expert-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--green-primary);
}
.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 14px;
  border: 3px solid var(--green-pale);
}
.expert-avatar img { width: 100%; height: 100%; object-fit: cover; }
.expert-card h3 { font-size: 17px; font-weight: 700; color: var(--text-dark); margin-bottom: 4px; }
.expert-card .role {
  font-size: 13px;
  color: var(--green-primary);
  font-weight: 600;
  margin-bottom: 10px;
}
.expert-card p { font-size: 13px; color: var(--text-gray); margin-bottom: 14px; line-height: 1.5; }
.expert-btns { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  border: 1.5px solid var(--green-primary);
  cursor: pointer;
  transition: var(--transition);
}
.btn-sm.solid { background: var(--green-primary); color: #fff; }
.btn-sm.solid:hover { background: var(--green-dark); }
.btn-sm.ghost { background: transparent; color: var(--green-primary); }
.btn-sm.ghost:hover { background: var(--green-pale); }

/* =============================================
   评论区
   ============================================= */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--green-primary);
}
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--green-pale);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--green-primary);
  flex-shrink: 0;
}
.review-name { font-weight: 700; font-size: 14px; color: var(--text-dark); }
.review-date { font-size: 12px; color: var(--text-light); }
.stars { color: #f5a623; font-size: 14px; }
.review-text { font-size: 14px; color: var(--text-gray); line-height: 1.6; }

/* =============================================
   FAQ
   ============================================= */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-question {
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #fff;
  transition: var(--transition);
  user-select: none;
}
.faq-question:hover { background: var(--green-pale); color: var(--green-primary); }
.faq-question.open { background: var(--green-primary); color: #fff; }
.faq-question .icon {
  font-size: 20px;
  font-weight: 300;
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-question.open .icon { transform: rotate(45deg); }
.faq-answer {
  display: none;
  padding: 16px 20px;
  font-size: 14px;
  color: var(--text-gray);
  line-height: 1.7;
  background: var(--bg-light);
  border-top: 1px solid var(--border);
}
.faq-answer.show { display: block; }

/* =============================================
   合作品牌
   ============================================= */
.partners-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}
.partner-logo {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-gray);
  transition: var(--transition);
  white-space: nowrap;
}
.partner-logo:hover {
  border-color: var(--green-primary);
  color: var(--green-primary);
  box-shadow: var(--shadow);
}

/* =============================================
   联系我们
   ============================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info h3 { font-size: 22px; font-weight: 800; color: var(--text-dark); margin-bottom: 20px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
}
.contact-icon {
  width: 44px;
  height: 44px;
  background: var(--green-pale);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.contact-item .label { font-size: 12px; color: var(--text-light); }
.contact-item .value { font-size: 15px; color: var(--text-dark); font-weight: 600; }
.qr-group { display: flex; gap: 20px; flex-wrap: wrap; }
.qr-box { text-align: center; }
.qr-box img { width: 120px; height: 120px; border-radius: 10px; border: 2px solid var(--border); }
.qr-box p { font-size: 12px; color: var(--text-gray); margin-top: 6px; }

/* =============================================
   社交分享
   ============================================= */
.share-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.share-bar .label { font-size: 14px; color: var(--text-gray); font-weight: 600; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  color: #fff;
}
.share-btn.wechat { background: #07c160; }
.share-btn.weibo { background: #e6162d; }
.share-btn.douyin { background: #010101; }
.share-btn.bilibili { background: #00a1d6; }
.share-btn:hover { opacity: 0.85; transform: translateY(-2px); }

/* =============================================
   底部
   ============================================= */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255,255,255,0.75);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}
.footer-brand .logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .logo-wrap img { height: 40px; filter: brightness(0) invert(1); }
.footer-brand .logo-wrap span { font-size: 20px; font-weight: 800; color: #fff; }
.footer-brand p { font-size: 13px; line-height: 1.8; color: rgba(255,255,255,0.6); }
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--gold); }
.footer-qr { display: flex; gap: 16px; margin-top: 16px; }
.footer-qr-item { text-align: center; }
.footer-qr-item img { width: 80px; height: 80px; border-radius: 8px; }
.footer-qr-item p { font-size: 11px; color: rgba(255,255,255,0.5); margin-top: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 18px 20px;
  margin-top: 40px;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}
.footer-bottom a { color: rgba(255,255,255,0.6); }
.footer-bottom a:hover { color: var(--gold); }
.update-time { color: rgba(255,255,255,0.4); font-size: 12px; }

/* =============================================
   内页 - 页面头部
   ============================================= */
.page-hero {
  background: linear-gradient(135deg, var(--green-dark) 0%, var(--green-primary) 60%, var(--green-light) 100%);
  padding: 60px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../images/banner1.jpg') center/cover;
  opacity: 0.15;
}
.page-hero .inner { position: relative; z-index: 1; }
.page-hero h1 {
  font-size: clamp(26px, 4vw, 44px);
  font-weight: 900;
  color: #fff;
  margin-bottom: 12px;
}
.page-hero p { font-size: 16px; color: rgba(255,255,255,0.85); max-width: 600px; margin: 0 auto; }

/* =============================================
   侧边栏布局
   ============================================= */
.content-sidebar {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  align-items: start;
}
.sidebar-widget {
  background: #fff;
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}
.sidebar-widget h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--green-primary);
}
.sidebar-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list li a { color: var(--text-dark); }
.sidebar-list li a:hover { color: var(--green-primary); }

/* =============================================
   文章详情
   ============================================= */
.article-header { margin-bottom: 28px; }
.article-header h1 {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 14px;
  line-height: 1.4;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-light);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.article-meta span { display: flex; align-items: center; gap: 4px; }
.article-body { font-size: 15px; line-height: 1.9; color: var(--text-dark); }
.article-body p { margin-bottom: 18px; }
.article-body h2 { font-size: 22px; font-weight: 700; margin: 28px 0 14px; color: var(--text-dark); }
.article-body h3 { font-size: 18px; font-weight: 700; margin: 22px 0 12px; color: var(--green-primary); }
.article-body img {
  border-radius: var(--radius);
  margin: 20px 0;
  width: 100%;
  max-height: 400px;
  object-fit: cover;
}
.article-body blockquote {
  border-left: 4px solid var(--green-primary);
  padding: 14px 20px;
  background: var(--green-pale);
  border-radius: 0 var(--radius) var(--radius) 0;
  margin: 20px 0;
  font-style: italic;
  color: var(--text-gray);
}

/* =============================================
   评论区
   ============================================= */
.comments-section { margin-top: 40px; }
.comments-section h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--green-primary);
}
.comment-item {
  display: flex;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
}
.comment-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--green-pale);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--green-primary);
  flex-shrink: 0;
}
.comment-body .name { font-weight: 700; font-size: 14px; color: var(--text-dark); }
.comment-body .date { font-size: 12px; color: var(--text-light); margin-bottom: 6px; }
.comment-body p { font-size: 14px; color: var(--text-gray); line-height: 1.6; }
.comment-reply {
  margin-left: 58px;
  background: var(--bg-light);
  border-radius: var(--radius);
  padding: 14px;
  margin-top: 10px;
}
.comment-reply .reply-label {
  font-size: 12px;
  color: var(--green-primary);
  font-weight: 700;
  margin-bottom: 6px;
}
.comment-reply p { font-size: 13px; color: var(--text-gray); }

/* =============================================
   标签云
   ============================================= */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-item {
  background: var(--green-pale);
  color: var(--green-primary);
  font-size: 12px;
  padding: 5px 12px;
  border-radius: 20px;
  font-weight: 600;
  transition: var(--transition);
}
.tag-item:hover { background: var(--green-primary); color: #fff; }

/* =============================================
   分页
   ============================================= */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.pagination a, .pagination span {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  border: 1.5px solid var(--border);
  color: var(--text-dark);
  transition: var(--transition);
}
.pagination a:hover { border-color: var(--green-primary); color: var(--green-primary); }
.pagination .current { background: var(--green-primary); color: #fff; border-color: var(--green-primary); }

/* =============================================
   加入社区 How-To
   ============================================= */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 24px;
}
.step-card {
  text-align: center;
  padding: 28px 20px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
}
.step-num {
  width: 48px;
  height: 48px;
  background: var(--green-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 900;
  margin: 0 auto 14px;
}
.step-card h4 { font-size: 16px; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; }
.step-card p { font-size: 13px; color: var(--text-gray); }

/* =============================================
   响应式
   ============================================= */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .content-sidebar { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .main-nav { display: none; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: #fff; box-shadow: 0 8px 24px rgba(0,0,0,0.1); padding: 16px; gap: 4px; z-index: 999; }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 16px; border-radius: 8px; }
  .menu-toggle { display: flex; }
  .hero-banner { min-height: 360px; }
  .hero-content h1 { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: 1fr; }
  .stats-inner { gap: 16px; }
  .stat-item .num { font-size: 24px; }
  .howto-steps { grid-template-columns: 1fr 1fr; }
  .expert-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .howto-steps { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
}

/* =============================================
   动画
   ============================================= */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in { animation: fadeInUp 0.6s ease forwards; }

/* =============================================
   懒加载占位
   ============================================= */
img[data-src] {
  background: var(--green-pale);
  min-height: 100px;
}

/* =============================================
   滚动条
   ============================================= */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-light); }
::-webkit-scrollbar-thumb { background: var(--green-primary); border-radius: 3px; }

/* =============================================
   内页特殊样式
   ============================================= */
.bg-green-pale { background: var(--green-pale); }
.bg-dark { background: var(--bg-dark); }
.text-green { color: var(--green-primary); }
.text-gold { color: var(--gold); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* 特色视频大卡片 */
.featured-video {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  margin-bottom: 32px;
}
.featured-video .thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}
.featured-video .thumb img { width: 100%; height: 100%; object-fit: cover; }
.featured-video .info {
  background: var(--bg-dark);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.featured-video .info .tag {
  display: inline-block;
  background: var(--gold);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 14px;
}
.featured-video .info h2 { font-size: 22px; font-weight: 800; color: #fff; margin-bottom: 12px; }
.featured-video .info p { font-size: 14px; color: rgba(255,255,255,0.7); margin-bottom: 20px; }
@media (max-width: 768px) {
  .featured-video { grid-template-columns: 1fr; }
}

/* 热门排行 */
.rank-list { }
.rank-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.rank-item:last-child { border-bottom: none; }
.rank-num {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  flex-shrink: 0;
  background: var(--green-pale);
  color: var(--green-primary);
}
.rank-item:nth-child(1) .rank-num { background: #ff4444; color: #fff; }
.rank-item:nth-child(2) .rank-num { background: #ff8800; color: #fff; }
.rank-item:nth-child(3) .rank-num { background: var(--gold); color: #fff; }
.rank-item .rank-thumb {
  width: 64px;
  height: 40px;
  border-radius: 6px;
  overflow: hidden;
  flex-shrink: 0;
}
.rank-item .rank-thumb img { width: 100%; height: 100%; object-fit: cover; }
.rank-item .rank-info { flex: 1; min-width: 0; }
.rank-item .rank-info h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dark);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rank-item .rank-info span { font-size: 12px; color: var(--text-light); }