/* ============================================================
   草莓视频 - 汽车改装视频社区 | irxe6y.cn
   原创CSS样式表 v1.0
   颜色方案：深蓝灰#2C3E50 炽热红#E74C3C 琥珀金#F39C12
   ============================================================ */

/* === 全局重置 === */
*, *::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;
  background: #F5F6FA;
  color: #34495E;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color .25s; }
a:hover { color: #E74C3C; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* === CSS变量 === */
:root {
  --primary: #2C3E50;
  --accent: #E74C3C;
  --gold: #F39C12;
  --bg: #F5F6FA;
  --white: #FFFFFF;
  --text: #34495E;
  --text-light: #7F8C8D;
  --border: #E0E4EA;
  --shadow: 0 4px 20px rgba(44,62,80,.12);
  --shadow-lg: 0 8px 40px rgba(44,62,80,.18);
  --radius: 10px;
  --radius-lg: 18px;
  --transition: .3s ease;
}

/* === 容器 === */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 70px 0; }
.section-alt { background: #fff; }

/* === 标题系统 === */
.section-header { text-align: center; margin-bottom: 50px; }
.section-tag {
  display: inline-block;
  background: linear-gradient(135deg, #E74C3C, #F39C12);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 14px;
  line-height: 1.3;
}
.section-title span { color: var(--accent); }
.section-desc { color: var(--text-light); font-size: 1rem; max-width: 560px; margin: 0 auto; }

/* === 顶部通知栏 === */
.top-bar {
  background: var(--primary);
  color: rgba(255,255,255,.85);
  font-size: 13px;
  padding: 7px 0;
  text-align: center;
}
.top-bar a { color: var(--gold); }
.top-bar-inner { display: flex; justify-content: space-between; align-items: center; }

/* === 导航栏 === */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #fff;
  box-shadow: 0 2px 16px rgba(44,62,80,.10);
  transition: box-shadow .3s;
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 20px;
}
.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.navbar-logo img.logo-icon { width: 40px; height: 40px; object-fit: contain; border-radius: 8px; }
.navbar-logo img.logo-main { height: 38px; width: auto; object-fit: contain; }
.navbar-logo .brand-text { font-size: 1.35rem; font-weight: 800; color: var(--primary); letter-spacing: 1px; }
.navbar-logo .brand-text span { color: var(--accent); }

/* 导航链接 */
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  border-radius: 8px;
  transition: all .25s;
  white-space: nowrap;
}
.nav-links a:hover, .nav-links a.active {
  background: #FEF3F2;
  color: var(--accent);
}
.nav-links a.nav-cta {
  background: linear-gradient(135deg, #E74C3C, #C0392B);
  color: #fff;
  padding: 8px 18px;
  border-radius: 20px;
}
.nav-links a.nav-cta:hover { background: linear-gradient(135deg, #C0392B, #A93226); color: #fff; }

/* 搜索框 */
.navbar-search { flex: 1; max-width: 280px; position: relative; }
.navbar-search input {
  width: 100%;
  padding: 9px 40px 9px 16px;
  border: 2px solid var(--border);
  border-radius: 24px;
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
  outline: none;
  transition: border-color .25s;
}
.navbar-search input:focus { border-color: var(--accent); background: #fff; }
.navbar-search .search-btn {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-light);
  font-size: 16px;
  padding: 4px;
}
.navbar-search .search-btn:hover { color: var(--accent); }

/* 汉堡菜单 */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.hamburger span { width: 24px; height: 2px; background: var(--primary); border-radius: 2px; transition: all .3s; }

/* === 英雄区 === */
.hero {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #1a252f 0%, #2C3E50 50%, #1a252f 100%);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero-banner.jpg');
  background-size: cover;
  background-position: center;
  opacity: .35;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(44,62,80,.85) 0%, rgba(231,76,60,.25) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  padding: 80px 0;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(231,76,60,.2);
  border: 1px solid rgba(231,76,60,.5);
  color: #fff;
  font-size: 13px;
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 20px;
}
.hero-badge .dot { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; animation: pulse 1.5s infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.6;transform:scale(1.3)} }
.hero h1 {
  font-size: 3rem;
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 18px;
  text-shadow: 0 2px 20px rgba(0,0,0,.4);
}
.hero h1 .highlight { color: var(--gold); }
.hero-sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,.85);
  margin-bottom: 32px;
  max-width: 520px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #E74C3C, #C0392B);
  color: #fff;
  padding: 14px 28px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(231,76,60,.4);
  transition: all .3s;
  border: none;
  cursor: pointer;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(231,76,60,.5); color: #fff; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: #fff;
  padding: 14px 28px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 700;
  border: 2px solid rgba(255,255,255,.5);
  transition: all .3s;
  cursor: pointer;
}
.btn-outline:hover { background: rgba(255,255,255,.15); border-color: #fff; color: #fff; }
.hero-stats { display: flex; gap: 32px; flex-wrap: wrap; }
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 1.8rem; font-weight: 900; color: var(--gold); line-height: 1; }
.hero-stat .label { font-size: 12px; color: rgba(255,255,255,.7); margin-top: 4px; }

/* === 搜索栏（首页大搜索） === */
.hero-search {
  background: rgba(255,255,255,.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 50px;
  display: flex;
  align-items: center;
  padding: 6px 6px 6px 20px;
  max-width: 560px;
  margin-bottom: 30px;
}
.hero-search input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: #fff;
  font-size: 15px;
}
.hero-search input::placeholder { color: rgba(255,255,255,.6); }
.hero-search button {
  background: linear-gradient(135deg, #E74C3C, #C0392B);
  color: #fff;
  border: none;
  padding: 10px 22px;
  border-radius: 40px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all .3s;
}
.hero-search button:hover { background: linear-gradient(135deg, #C0392B, #A93226); }

/* === 视频卡片 === */
.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.video-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #1a252f;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.35);
  opacity: 0;
  transition: opacity .3s;
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-circle {
  width: 56px;
  height: 56px;
  background: rgba(231,76,60,.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(.85);
  transition: transform .3s;
}
.video-card:hover .play-circle { transform: scale(1); }
.play-circle::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent #fff;
  margin-left: 4px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,.75);
  color: #fff;
  font-size: 12px;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
}
.video-info { padding: 16px; }
.video-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta { display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: var(--text-light); }
.video-author { display: flex; align-items: center; gap: 6px; }
.video-author-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}
.video-stats { display: flex; gap: 10px; font-size: 12px; color: var(--text-light); margin-top: 8px; }
.video-stats span { display: flex; align-items: center; gap: 3px; }

/* === 特色卡片 === */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.feature-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border-top: 4px solid transparent;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--gold));
  transform: scaleX(0);
  transition: transform .3s;
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, #FEF3F2, #FFF3CD);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 18px;
}
.feature-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-light); line-height: 1.65; }

/* === AI赋能区 === */
.ai-section { background: linear-gradient(135deg, #1a252f 0%, #2C3E50 100%); color: #fff; }
.ai-section .section-title { color: #fff; }
.ai-section .section-desc { color: rgba(255,255,255,.7); }
.ai-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px; }
.ai-card {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  transition: all .3s;
}
.ai-card:hover { background: rgba(255,255,255,.14); transform: translateY(-4px); }
.ai-card-icon { font-size: 36px; margin-bottom: 14px; }
.ai-card h3 { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
.ai-card p { font-size: 13px; color: rgba(255,255,255,.65); line-height: 1.6; }

/* === 专家展示 === */
.expert-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.expert-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all .3s;
}
.expert-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.expert-avatar {
  height: 200px;
  background: linear-gradient(135deg, #2C3E50, #E74C3C);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 64px;
  position: relative;
  overflow: hidden;
}
.expert-avatar::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 60px;
  background: linear-gradient(transparent, rgba(44,62,80,.6));
}
.expert-info { padding: 20px; }
.expert-name { font-size: 1.15rem; font-weight: 800; color: var(--primary); margin-bottom: 4px; }
.expert-title { font-size: 13px; color: var(--accent); font-weight: 600; margin-bottom: 10px; }
.expert-desc { font-size: 13px; color: var(--text-light); line-height: 1.6; margin-bottom: 14px; }
.expert-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.expert-tag {
  background: #FEF3F2;
  color: var(--accent);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 12px;
  font-weight: 600;
}
.expert-actions { display: flex; gap: 10px; }
.btn-sm {
  flex: 1;
  text-align: center;
  padding: 8px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  transition: all .25s;
  border: none;
  cursor: pointer;
}
.btn-sm-primary { background: var(--accent); color: #fff; }
.btn-sm-primary:hover { background: #C0392B; color: #fff; }
.btn-sm-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--border); }
.btn-sm-outline:hover { border-color: var(--accent); color: var(--accent); }

/* === 合作品牌 === */
.partner-section { background: #fff; }
.partner-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-bottom: 50px;
}
.partner-logo-item {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 28px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-light);
  transition: all .25s;
  min-width: 120px;
  text-align: center;
}
.partner-logo-item:hover { border-color: var(--accent); color: var(--accent); background: #FEF3F2; }

/* === 加入指南 === */
.join-guide { background: linear-gradient(135deg, #FEF3F2, #FFF3CD); border-radius: var(--radius-lg); padding: 40px; margin-top: 40px; }
.join-steps { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 20px; }
.join-step { text-align: center; }
.step-num {
  width: 48px;
  height: 48px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 900;
  margin: 0 auto 14px;
}
.step-title { font-size: 15px; font-weight: 700; color: var(--primary); margin-bottom: 6px; }
.step-desc { font-size: 13px; color: var(--text-light); }

/* === FAQ === */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border-radius: var(--radius);
  margin-bottom: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.faq-question {
  padding: 18px 24px;
  font-size: 15px;
  font-weight: 700;
  color: var(--primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background .25s;
}
.faq-question:hover { background: #FEF3F2; }
.faq-question .faq-icon { font-size: 20px; color: var(--accent); transition: transform .3s; font-weight: 400; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease, padding .3s;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.75;
}
.faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 18px; }

/* === 用户评价 === */
.review-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.review-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: all .3s;
  position: relative;
}
.review-card::before {
  content: '"';
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 60px;
  color: #FEF3F2;
  font-family: Georgia, serif;
  line-height: 1;
}
.review-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--gold));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  flex-shrink: 0;
}
.review-user-name { font-size: 15px; font-weight: 700; color: var(--primary); }
.review-user-label { font-size: 12px; color: var(--text-light); }
.review-stars { color: var(--gold); font-size: 14px; margin-bottom: 10px; }
.review-text { font-size: 14px; color: var(--text); line-height: 1.7; }
.review-tag {
  display: inline-block;
  background: #FEF3F2;
  color: var(--accent);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 12px;
  margin-top: 12px;
  font-weight: 600;
}

/* === 联系我们 === */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact-info-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
}
.contact-info-card h3 { font-size: 1.2rem; font-weight: 800; color: var(--primary); margin-bottom: 20px; }
.contact-item { display: flex; gap: 14px; margin-bottom: 18px; align-items: flex-start; }
.contact-icon {
  width: 40px;
  height: 40px;
  background: #FEF3F2;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.contact-label { font-size: 12px; color: var(--text-light); margin-bottom: 3px; }
.contact-value { font-size: 14px; font-weight: 600; color: var(--primary); }
.qrcode-row { display: flex; gap: 20px; margin-top: 20px; }
.qrcode-item { text-align: center; }
.qrcode-item img { width: 100px; height: 100px; border-radius: 10px; border: 2px solid var(--border); }
.qrcode-label { font-size: 12px; color: var(--text-light); margin-top: 6px; }

/* === 社交分享 === */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.share-label { font-size: 14px; color: var(--text-light); font-weight: 600; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .25s;
}
.share-wechat { background: #07C160; color: #fff; }
.share-weibo { background: #E6162D; color: #fff; }
.share-douyin { background: #000; color: #fff; }
.share-bilibili { background: #00A1D6; color: #fff; }
.share-btn:hover { opacity: .85; transform: translateY(-2px); }

/* === 底部 === */
.footer {
  background: var(--primary);
  color: rgba(255,255,255,.8);
  padding: 60px 0 0;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand .footer-logo img { height: 36px; }
.footer-brand .footer-logo span { font-size: 1.2rem; font-weight: 800; color: #fff; }
.footer-brand p { font-size: 14px; line-height: 1.7; margin-bottom: 16px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: rgba(255,255,255,.65); transition: color .25s; }
.footer-col ul li a:hover { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
}
.footer-seo-tags {
  font-size: 12px;
  color: rgba(255,255,255,.3);
  text-align: center;
  padding: 10px 0;
  line-height: 2;
}

/* === 面包屑 === */
.breadcrumb {
  background: #fff;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-light);
}
.breadcrumb a { color: var(--text-light); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { margin: 0 8px; }

/* === 标签云 === */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-item {
  background: var(--bg);
  border: 1.5px solid var(--border);
  color: var(--text);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  transition: all .25s;
  cursor: pointer;
}
.tag-item:hover { background: var(--accent); color: #fff; border-color: var(--accent); }

/* === 统计数字 === */
.stats-bar {
  background: linear-gradient(135deg, #E74C3C, #C0392B);
  padding: 30px 0;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat-item .stat-num { font-size: 2rem; font-weight: 900; color: #fff; }
.stat-item .stat-label { font-size: 13px; color: rgba(255,255,255,.8); margin-top: 4px; }

/* === 滚动公告 === */
.notice-bar {
  background: linear-gradient(135deg, #FFF3CD, #FEF3F2);
  border-bottom: 1px solid #F39C12;
  padding: 10px 0;
  overflow: hidden;
}
.notice-inner { display: flex; align-items: center; gap: 16px; }
.notice-label {
  background: var(--gold);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 4px;
  flex-shrink: 0;
}
.notice-scroll { overflow: hidden; flex: 1; }
.notice-text { white-space: nowrap; animation: marquee 20s linear infinite; font-size: 13px; color: var(--text); }
@keyframes marquee { from{transform:translateX(100%)} to{transform:translateX(-100%)} }

/* === 分页 === */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.page-btn {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
  border: 1.5px solid var(--border);
  background: #fff;
  color: var(--text);
  cursor: pointer;
  transition: all .25s;
}
.page-btn:hover, .page-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* === 移动端 === */
@media (max-width: 768px) {
  .hero h1 { font-size: 2rem; }
  .hero-stats { gap: 20px; }
  .nav-links { display: none; position: absolute; top: 70px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 16px; box-shadow: 0 8px 20px rgba(0,0,0,.1); gap: 4px; }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .navbar-search { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .section { padding: 50px 0; }
  .hero { min-height: 420px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 1.6rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .expert-grid { grid-template-columns: 1fr; }
}

/* === 懒加载占位 === */
img[data-src] { background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; }
@keyframes shimmer { 0%{background-position:200% 0} 100%{background-position:-200% 0} }

/* === 工具类 === */
.text-center { text-align: center; }
.text-accent { color: var(--accent); }
.text-gold { color: var(--gold); }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mb-20 { margin-bottom: 20px; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.hidden { display: none !important; }

/* === 干扰标签隐藏 === */
.1Zr1Eni5 { display: none !important; visibility: hidden !important; height: 0 !important; overflow: hidden !important; }