/* ===== 茄子视频传媒平台 - 主样式文件 ===== */
/* styh0n.cn */

/* ===== 基础重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: #2d2d2d;
  background: #fff;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color 0.25s; }
a:hover { color: #e91e8c; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ===== CSS变量 ===== */
:root {
  --primary: #e91e8c;
  --primary-dark: #c2185b;
  --primary-light: #fce4ec;
  --secondary: #7c3aed;
  --accent: #ff6b6b;
  --gold: #f59e0b;
  --dark: #1a1a2e;
  --gray: #6b7280;
  --gray-light: #f3f4f6;
  --white: #ffffff;
  --shadow: 0 4px 20px rgba(233,30,140,0.12);
  --shadow-lg: 0 8px 40px rgba(233,30,140,0.18);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ===== 通用布局 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 70px 0; }
.section-alt { background: linear-gradient(135deg, #fdf2f8 0%, #f5f3ff 100%); }
.section-dark { background: var(--dark); color: #fff; }

/* ===== 标题样式 ===== */
.section-tag {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 900;
  color: var(--dark);
  margin-bottom: 10px;
  line-height: 1.3;
}
.section-sub {
  font-size: 15px;
  color: var(--gray);
  margin-bottom: 40px;
  max-width: 560px;
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  padding: 13px 30px;
  border-radius: 50px;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(233,30,140,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(233,30,140,0.45); color: #fff; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 2px solid var(--primary);
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: 50px;
  transition: var(--transition);
}
.btn-outline:hover { background: var(--primary); color: #fff; }

/* ===== 顶部公告栏 ===== */
.top-bar {
  background: linear-gradient(90deg, var(--dark), var(--secondary), var(--primary));
  color: #fff;
  font-size: 13px;
  padding: 7px 0;
  text-align: center;
  letter-spacing: 0.5px;
}
.top-bar a { color: var(--gold); font-weight: 600; }

/* ===== 头部导航 ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(233,30,140,0.1);
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: 20px;
}
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.logo-img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-name {
  font-size: 22px;
  font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo-sub { font-size: 11px; color: var(--gray); letter-spacing: 0.5px; }

/* 导航菜单 */
.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  padding: 7px 14px;
  border-radius: 8px;
  transition: var(--transition);
  white-space: nowrap;
}
.nav a:hover, .nav a.active { background: var(--primary-light); color: var(--primary); }

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

/* ===== 搜索框 ===== */
.search-bar {
  background: linear-gradient(135deg, var(--primary-light), #f5f3ff);
  padding: 14px 0;
  border-bottom: 1px solid rgba(233,30,140,0.08);
}
.search-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 700px;
  margin: 0 auto;
  padding: 0 20px;
}
.search-form {
  display: flex;
  flex: 1;
  background: #fff;
  border-radius: 50px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(233,30,140,0.1);
  border: 2px solid transparent;
  transition: var(--transition);
}
.search-form:focus-within { border-color: var(--primary); }
.search-form input {
  flex: 1;
  border: none;
  outline: none;
  padding: 11px 20px;
  font-size: 14px;
  background: transparent;
  color: var(--dark);
}
.search-form input::placeholder { color: #bbb; }
.search-btn {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  border: none;
  padding: 0 22px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.search-btn:hover { opacity: 0.9; }
.search-hot { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 12px; color: var(--gray); }
.search-hot a {
  background: #fff;
  border: 1px solid rgba(233,30,140,0.2);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  transition: var(--transition);
}
.search-hot a:hover { background: var(--primary); color: #fff; }

/* ===== Hero Banner ===== */
.hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--dark);
}
.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26,26,46,0.85) 0%, rgba(124,58,237,0.4) 60%, rgba(233,30,140,0.3) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  color: #fff;
  padding: 60px 0;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(233,30,140,0.25);
  border: 1px solid rgba(233,30,140,0.5);
  color: #ffb3d9;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 18px;
  backdrop-filter: blur(4px);
}
.hero h1 {
  font-size: clamp(28px, 5vw, 52px);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.hero h1 em { font-style: normal; color: #ffb3d9; }
.hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 28px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 30px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.hero-stat-num { font-size: 26px; font-weight: 900; color: #fff; }
.hero-stat-label { font-size: 12px; color: rgba(255,255,255,0.65); margin-top: 2px; }

/* ===== 传媒视频卡片 ===== */
.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: 0 2px 16px rgba(0,0,0,0.07);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
  background: #f0f0f0;
}
.video-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.play-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.video-card:hover .play-overlay { background: rgba(0,0,0,0.38); }
.play-btn {
  width: 56px;
  height: 56px;
  background: rgba(255,255,255,0.95);
  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);
}
.video-card:hover .play-btn { opacity: 1; transform: scale(1); }
.play-btn svg { width: 22px; height: 22px; fill: var(--primary); margin-left: 3px; }
.video-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.7);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-info { padding: 16px; }
.video-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--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(--gray);
}
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }
.video-tag {
  font-size: 11px;
  background: var(--primary-light);
  color: var(--primary);
  padding: 2px 9px;
  border-radius: 20px;
  font-weight: 500;
}

/* ===== 专家卡片 ===== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.expert-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  box-shadow: 0 2px 16px rgba(0,0,0,0.07);
  transition: var(--transition);
  border: 1px solid rgba(233,30,140,0.06);
}
.expert-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: rgba(233,30,140,0.2); }
.expert-avatar {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 14px;
  border: 3px solid var(--primary-light);
}
.expert-name { font-size: 17px; font-weight: 800; color: var(--dark); margin-bottom: 4px; }
.expert-role { font-size: 12px; color: var(--primary); font-weight: 600; margin-bottom: 10px; }
.expert-desc { font-size: 13px; color: var(--gray); line-height: 1.6; margin-bottom: 14px; }
.expert-awards { display: flex; flex-wrap: wrap; gap: 5px; justify-content: center; margin-bottom: 14px; }
.expert-award {
  font-size: 11px;
  background: linear-gradient(135deg, #fff7ed, #fef3c7);
  color: #92400e;
  padding: 2px 9px;
  border-radius: 20px;
  border: 1px solid #fde68a;
}
.expert-btns { display: flex; gap: 8px; justify-content: center; }
.expert-btn {
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  transition: var(--transition);
}
.expert-btn-primary { background: var(--primary); color: #fff; }
.expert-btn-outline { border: 1px solid var(--primary); color: var(--primary); }
.expert-btn:hover { opacity: 0.85; }

/* ===== 功能特色 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.feature-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px 18px;
  text-align: center;
  border: 1px solid rgba(233,30,140,0.08);
  transition: var(--transition);
}
.feature-card:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-3px); }
.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary-light), #f5f3ff);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  font-size: 26px;
}
.feature-title { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 6px; }
.feature-desc { font-size: 13px; color: var(--gray); line-height: 1.6; }

/* ===== 评价卡片 ===== */
.review-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: 0 2px 12px rgba(0,0,0,0.06);
  border-left: 4px solid var(--primary);
  transition: var(--transition);
}
.review-card:hover { box-shadow: var(--shadow); }
.review-stars { color: var(--gold); font-size: 16px; margin-bottom: 10px; letter-spacing: 2px; }
.review-text { font-size: 14px; color: #444; line-height: 1.7; margin-bottom: 14px; font-style: italic; }
.review-user { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}
.review-name { font-size: 14px; font-weight: 700; color: var(--dark); }
.review-date { font-size: 12px; color: var(--gray); }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid rgba(233,30,140,0.1);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: var(--primary); box-shadow: var(--shadow); }
.faq-q {
  padding: 18px 22px;
  font-size: 15px;
  font-weight: 700;
  color: var(--dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: var(--transition);
}
.faq-q:hover { color: var(--primary); }
.faq-q::after {
  content: '+';
  font-size: 22px;
  font-weight: 300;
  color: var(--primary);
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-item.open .faq-q::after { content: '−'; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-item.open .faq-a { max-height: 300px; }
.faq-a-inner {
  padding: 0 22px 18px;
  font-size: 14px;
  color: var(--gray);
  line-height: 1.8;
}

/* ===== 合作品牌 ===== */
.partner-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}
.partner-item {
  background: #fff;
  border-radius: var(--radius);
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 700;
  color: var(--gray);
  border: 1px solid rgba(0,0,0,0.08);
  transition: var(--transition);
}
.partner-item:hover { border-color: var(--primary); color: var(--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-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}
.contact-icon {
  width: 44px;
  height: 44px;
  background: var(--primary-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.contact-label { font-size: 12px; color: var(--gray); margin-bottom: 3px; }
.contact-value { font-size: 15px; font-weight: 700; color: var(--dark); }
.qrcode-row { display: flex; gap: 24px; flex-wrap: wrap; }
.qrcode-item { text-align: center; }
.qrcode-item img { width: 120px; height: 120px; border-radius: 12px; border: 2px solid var(--primary-light); }
.qrcode-item p { font-size: 12px; color: var(--gray); margin-top: 8px; font-weight: 600; }

/* ===== 分享栏 ===== */
.share-bar { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: 50px;
  transition: var(--transition);
  cursor: pointer;
}
.share-wechat { background: #07c160; color: #fff; }
.share-weibo { background: #e6162d; color: #fff; }
.share-douyin { background: #000; color: #fff; }
.share-bilibili { background: #fb7299; color: #fff; }
.share-btn:hover { opacity: 0.85; transform: translateY(-2px); color: #fff; }

/* ===== 面包屑 ===== */
.breadcrumb {
  background: var(--gray-light);
  padding: 10px 0;
  font-size: 13px;
  color: var(--gray);
}
.breadcrumb-inner { display: flex; align-items: center; gap: 6px; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb-sep { color: #ccc; }

/* ===== 统计数字 ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.stat-card {
  text-align: center;
  padding: 28px 16px;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.1);
}
.stat-num {
  font-size: 36px;
  font-weight: 900;
  background: linear-gradient(135deg, #ffb3d9, #c4b5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 13px; color: rgba(255,255,255,0.65); margin-top: 4px; }

/* ===== AI功能区 ===== */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.ai-card {
  background: linear-gradient(135deg, var(--dark), #2d1b69);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  color: #fff;
  border: 1px solid rgba(124,58,237,0.3);
  transition: var(--transition);
}
.ai-card:hover { border-color: var(--secondary); box-shadow: 0 8px 30px rgba(124,58,237,0.3); transform: translateY(-4px); }
.ai-icon { font-size: 36px; margin-bottom: 14px; }
.ai-title { font-size: 17px; font-weight: 800; margin-bottom: 8px; }
.ai-desc { font-size: 13px; color: rgba(255,255,255,0.7); line-height: 1.7; }
.ai-badge {
  display: inline-block;
  background: rgba(233,30,140,0.3);
  color: #ffb3d9;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  margin-top: 12px;
}

/* ===== 页脚 ===== */
.footer { background: var(--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;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand { margin-bottom: 16px; }
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.footer-logo img { width: 40px; height: 40px; border-radius: 50%; }
.footer-logo-name {
  font-size: 20px;
  font-weight: 900;
  background: linear-gradient(135deg, #ffb3d9, #c4b5fd);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-desc { font-size: 13px; line-height: 1.8; color: rgba(255,255,255,0.55); margin-bottom: 18px; }
.footer-col-title { font-size: 14px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.footer-links { display: flex; flex-direction: column; gap: 9px; }
.footer-links a { font-size: 13px; color: rgba(255,255,255,0.6); transition: var(--transition); }
.footer-links a:hover { color: var(--primary); padding-left: 4px; }
.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--primary); }

/* ===== 悬浮工具栏 ===== */
.float-bar {
  position: fixed;
  right: 20px;
  bottom: 100px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 999;
}
.float-btn {
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 4px 15px rgba(233,30,140,0.4);
  cursor: pointer;
  transition: var(--transition);
}
.float-btn:hover { transform: scale(1.1); }

/* ===== 弹幕区 ===== */
.danmu-wrap {
  position: relative;
  height: 50px;
  overflow: hidden;
  background: rgba(0,0,0,0.03);
  border-radius: 8px;
  margin-bottom: 20px;
}
.danmu-item {
  position: absolute;
  white-space: nowrap;
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  animation: danmuScroll 12s linear infinite;
  top: 50%;
  transform: translateY(-50%);
}
@keyframes danmuScroll {
  from { left: 100%; }
  to { left: -100%; }
}

/* ===== 渐入动画 ===== */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav { display: none; flex-direction: column; position: absolute; top: 70px; left: 0; right: 0; background: #fff; padding: 16px; box-shadow: 0 8px 30px rgba(0,0,0,0.1); border-top: 1px solid rgba(233,30,140,0.1); }
  .nav.open { display: flex; }
  .hamburger { display: flex; }
  .hero { min-height: 420px; }
  .hero-stats { flex-wrap: wrap; gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-grid { grid-template-columns: 1fr; }
  .section { padding: 50px 0; }
  .search-inner { flex-direction: column; }
  .search-hot { display: none; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}