/* ====================================================
   海角 - TANGXIN VIDEO | 主样式文件
   zazffivh.cn | 版本 2026.04
==================================================== */

/* === CSS变量 === */
:root {
  --primary: #dc1464;
  --primary-dark: #a00d4a;
  --primary-light: #f5659a;
  --secondary: #7c3aed;
  --accent: #f59e0b;
  --bg-dark: #0f0a1a;
  --bg-card: #1a1028;
  --bg-card2: #221535;
  --text-main: #f0e6f6;
  --text-muted: #a08cb8;
  --text-white: #ffffff;
  --border: rgba(220,20,100,0.25);
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 8px 32px rgba(220,20,100,0.15);
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

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

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

/* === 通用工具类 === */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 70px 0; }
.section-sm { padding: 40px 0; }
.text-center { text-align: center; }
.text-gradient {
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.badge {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 4px 20px rgba(220,20,100,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(220,20,100,0.5);
  color: #fff;
}
.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary-light);
  background: transparent;
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}
.btn-sm { padding: 8px 18px; font-size: 13px; }

/* === 标题样式 === */
.section-title {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.3;
}
.section-subtitle {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 48px;
  max-width: 600px;
}
.section-header { margin-bottom: 48px; }
.section-header.text-center .section-subtitle { margin-left: auto; margin-right: auto; }

/* === 顶部公告栏 === */
.top-bar {
  background: linear-gradient(90deg, var(--primary-dark), var(--secondary));
  padding: 8px 0;
  font-size: 13px;
  text-align: center;
  color: rgba(255,255,255,0.9);
}
.top-bar a { color: #fff; text-decoration: underline; }

/* === 导航栏 === */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15,10,26,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0;
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 20px;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.navbar-brand img.site-logo {
  height: 40px;
  width: auto;
}
.brand-name {
  font-size: 22px;
  font-weight: 800;
  background: linear-gradient(135deg, #ff6eb4, #dc1464);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.brand-sub {
  font-size: 11px;
  color: var(--text-muted);
  display: block;
  line-height: 1;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-menu a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  transition: var(--transition);
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--text-white);
  background: rgba(220,20,100,0.15);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: var(--transition);
}

/* === 搜索框 === */
.search-bar-wrap {
  background: rgba(26,16,40,0.9);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.search-form {
  display: flex;
  align-items: center;
  max-width: 680px;
  margin: 0 auto;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: 50px;
  overflow: hidden;
  padding: 0 6px 0 20px;
}
.search-form input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 15px;
  padding: 10px 0;
}
.search-form input::placeholder { color: var(--text-muted); }
.search-form button {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  border: none;
  border-radius: 50px;
  padding: 8px 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.search-form button:hover { opacity: 0.9; }

/* === Hero区域 === */
.hero {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #0f0a1a 0%, #1a0a2e 50%, #0d0a1f 100%);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero_video_bg.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.25;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,10,26,0.9) 0%, rgba(124,58,237,0.3) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(220,20,100,0.2);
  border: 1px solid rgba(220,20,100,0.4);
  border-radius: 50px;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--primary-light);
  margin-bottom: 20px;
}
.hero-badge::before { content: '●'; color: var(--primary); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }
.hero h1 {
  font-size: clamp(32px, 5vw, 58px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}
.hero-desc {
  font-size: 17px;
  color: var(--text-muted);
  margin-bottom: 32px;
  max-width: 540px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.stat-item { text-align: center; }
.stat-num {
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 13px; color: var(--text-muted); }

/* === 视频卡片 === */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
}
.video-thumb {
  position: relative;
  padding-top: 56.25%;
  overflow: hidden;
  background: var(--bg-card2);
}
.video-thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.08); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 30px rgba(220,20,100,0.6);
  transform: scale(0.8);
  transition: var(--transition);
}
.video-card:hover .play-icon { transform: scale(1); }
.play-icon svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-quality {
  position: absolute;
  top: 8px;
  left: 8px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-info { padding: 14px; }
.video-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
}
.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.video-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(220,20,100,0.15);
  color: var(--primary-light);
  border: 1px solid rgba(220,20,100,0.2);
}

/* === 图片卡片 === */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.photo-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 3/4;
  cursor: pointer;
  border: 1px solid var(--border);
}
.photo-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.photo-card:hover img { transform: scale(1.08); }
.photo-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  padding: 20px 12px 12px;
  transform: translateY(100%);
  transition: var(--transition);
}
.photo-card:hover .photo-overlay { transform: translateY(0); }
.photo-overlay p { font-size: 13px; color: #fff; }

/* === 专家卡片 === */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.expert-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.expert-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 16px;
  overflow: hidden;
  border: 3px solid var(--primary);
  background: var(--bg-card2);
}
.expert-avatar img { width: 100%; height: 100%; object-fit: cover; }
.expert-name { font-size: 18px; font-weight: 700; color: var(--text-white); margin-bottom: 4px; }
.expert-role { font-size: 13px; color: var(--primary-light); margin-bottom: 12px; }
.expert-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
.expert-awards { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; margin-bottom: 16px; }
.award-tag {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 20px;
  background: rgba(245,158,11,0.15);
  color: var(--accent);
  border: 1px solid rgba(245,158,11,0.3);
}
.expert-actions { display: flex; gap: 8px; justify-content: center; }

/* === 评价卡片 === */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  position: relative;
}
.review-card::before {
  content: '"';
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 60px;
  color: var(--primary);
  opacity: 0.2;
  line-height: 1;
  font-family: Georgia, serif;
}
.review-stars { color: var(--accent); font-size: 16px; margin-bottom: 12px; }
.review-text { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.review-user { display: flex; align-items: center; gap: 12px; }
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-name { font-size: 14px; font-weight: 600; color: var(--text-white); }
.review-date { font-size: 12px; color: var(--text-muted); }

/* === FAQ === */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-white);
  transition: var(--transition);
}
.faq-question:hover { color: var(--primary-light); }
.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(220,20,100,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
  color: var(--primary-light);
  font-size: 18px;
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 18px; }

/* === 合作品牌 === */
.partners-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}
.partner-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
  min-width: 120px;
  text-align: center;
}
.partner-item:hover { border-color: var(--primary); color: var(--primary-light); }

/* === 联系我们 === */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.contact-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--border);
  text-align: center;
}
.contact-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-size: 24px;
}
.contact-label { font-size: 16px; font-weight: 700; color: var(--text-white); margin-bottom: 8px; }
.contact-value { font-size: 14px; color: var(--text-muted); }
.qr-wrap { margin-top: 12px; }
.qr-wrap img { width: 100px; height: 100px; border-radius: 8px; margin: 0 auto; object-fit: cover; }

/* === 社交分享 === */
.share-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}
.share-wechat { background: #07c160; color: #fff; }
.share-weibo { background: #e6162d; color: #fff; }
.share-douyin { background: #010101; color: #fff; border: 1px solid #333; }
.share-bilibili { background: #00a1d6; color: #fff; }
.share-btn:hover { transform: translateY(-2px); opacity: 0.9; }

/* === 面包屑 === */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  padding: 16px 0;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb .sep { color: var(--border); }
.breadcrumb .current { color: var(--text-white); }

/* === 页脚 === */
.footer {
  background: #080514;
  border-top: 1px solid var(--border);
  padding: 60px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand .brand-name-footer {
  font-size: 24px;
  font-weight: 800;
  background: linear-gradient(135deg, #ff6eb4, #dc1464);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.social-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-card2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: var(--transition);
  color: var(--text-muted);
}
.social-icon:hover { background: var(--primary); border-color: var(--primary); color: #fff; }
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 20px;
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: var(--text-muted); transition: var(--transition); }
.footer-links a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--primary-light); }

/* === 标签页 === */
.tabs-nav {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--border);
  margin-bottom: 32px;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs-nav::-webkit-scrollbar { display: none; }
.tab-btn {
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
}
.tab-btn:hover { color: var(--text-white); }
.tab-btn.active { color: var(--primary-light); border-bottom-color: var(--primary); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* === 统计数字 === */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 20px;
}
.stats-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  border: 1px solid var(--border);
}
.stats-num {
  font-size: 36px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 6px;
}
.stats-label { font-size: 14px; color: var(--text-muted); }

/* === 加入社区步骤 === */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
}
.step-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  border: 1px solid var(--border);
  position: relative;
}
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 16px;
}
.step-title { font-size: 16px; font-weight: 700; color: var(--text-white); margin-bottom: 8px; }
.step-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* === 内页Banner === */
.page-banner {
  background: linear-gradient(135deg, #1a0a2e, #0f0a1a);
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(220,20,100,0.15) 0%, transparent 70%);
}
.page-banner h1 { font-size: clamp(28px, 4vw, 44px); font-weight: 800; margin-bottom: 12px; }
.page-banner p { font-size: 16px; color: var(--text-muted); max-width: 600px; }

/* === 文章内容 === */
.article-content { max-width: 860px; }
.article-content h2 { font-size: 24px; font-weight: 700; color: var(--text-white); margin: 32px 0 16px; }
.article-content h3 { font-size: 20px; font-weight: 600; color: var(--primary-light); margin: 24px 0 12px; }
.article-content p { font-size: 15px; color: var(--text-muted); line-height: 1.9; margin-bottom: 16px; }
.article-content ul { margin: 12px 0 16px 20px; }
.article-content ul li { font-size: 15px; color: var(--text-muted); margin-bottom: 8px; list-style: disc; }

/* === 加载动画 === */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card2) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius);
}
@keyframes skeleton-loading { 0%{background-position:200% 0} 100%{background-position:-200% 0} }

/* === 响应式 === */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-menu { display: none; position: fixed; top: 64px; left: 0; right: 0; background: rgba(15,10,26,0.98); flex-direction: column; padding: 20px; gap: 4px; border-bottom: 1px solid var(--border); z-index: 999; }
  .nav-menu.open { display: flex; }
  .hamburger { display: flex; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero { min-height: 480px; }
  .hero-stats { gap: 20px; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .section { padding: 50px 0; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 28px; }
  .hero-actions { flex-direction: column; }
  .video-grid { grid-template-columns: 1fr; }
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
}

/* === 懒加载占位 === */
img[data-src] { opacity: 0; transition: opacity 0.4s ease; }
img.loaded { opacity: 1; }

/* === 视频模态框 === */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal-box {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  max-width: 800px;
  width: 90%;
  border: 1px solid var(--border);
  transform: scale(0.9);
  transition: var(--transition);
}
.modal-overlay.open .modal-box { transform: scale(1); }
.modal-close {
  float: right;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
}
.modal-close:hover { color: var(--text-white); }
.modal-video {
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: 8px;
  margin-top: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 15px;
}

/* === 特色标签 === */
.feature-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.feature-tag {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
}
.feature-tag:hover, .feature-tag.active {
  background: rgba(220,20,100,0.15);
  border-color: var(--primary);
  color: var(--primary-light);
}

/* === 渐变分割线 === */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  margin: 48px 0;
}

/* === 通知条 === */
.notice-bar {
  background: rgba(220,20,100,0.1);
  border: 1px solid rgba(220,20,100,0.2);
  border-radius: var(--radius);
  padding: 12px 20px;
  font-size: 14px;
  color: var(--primary-light);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}