/* =============================================
   糖心vlog - 糖心vlog网 - 糖心vlog社区 主样式文件
   Brand: 糖心vlog | Domain: jcrdha.cn
   ============================================= */

/* ---- CSS变量 ---- */
:root {
  --primary: #0d2b4e;
  --primary-light: #1a4a7a;
  --accent: #e8a020;
  --accent-light: #f5c060;
  --bg-dark: #080f1c;
  --bg-mid: #0f1e35;
  --bg-light: #f7f9fc;
  --text-main: #1a1a2e;
  --text-muted: #6b7a90;
  --text-white: #ffffff;
  --card-bg: #ffffff;
  --border: #e0e8f0;
  --shadow: 0 4px 24px rgba(13,43,78,0.10);
  --shadow-hover: 0 8px 36px rgba(13,43,78,0.18);
  --radius: 12px;
  --radius-sm: 6px;
  --transition: all 0.28s cubic-bezier(0.4,0,0.2,1);
}

/* ---- Reset & Base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', '微软雅黑', 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-light);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ---- 顶部公告栏 ---- */
.top-bar {
  background: var(--primary);
  color: rgba(255,255,255,0.85);
  font-size: 13px;
  padding: 6px 0;
  text-align: center;
}
.top-bar a { color: var(--accent-light); }
.top-bar a:hover { color: #fff; }

/* ---- 导航栏 ---- */
.navbar {
  background: var(--bg-dark);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 16px rgba(0,0,0,0.3);
}
.navbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  height: 64px;
  gap: 24px;
}
.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.navbar-logo img.logo-img {
  height: 38px;
  width: auto;
}
.navbar-logo .brand-text {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 2px;
}
.navbar-logo .brand-sub {
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 1px;
  display: block;
  margin-top: -4px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}
.nav-links a {
  color: rgba(255,255,255,0.82);
  font-size: 14px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: rgba(232,160,32,0.12);
}
.navbar-search {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 24px;
  padding: 6px 14px;
  gap: 8px;
  flex-shrink: 0;
}
.navbar-search input {
  background: none;
  border: none;
  outline: none;
  color: #fff;
  font-size: 13px;
  width: 160px;
}
.navbar-search input::placeholder { color: rgba(255,255,255,0.45); }
.navbar-search button {
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  padding: 0;
  transition: var(--transition);
}
.navbar-search button:hover { color: var(--accent); }
.nav-mobile-btn {
  display: none;
  color: #fff;
  font-size: 22px;
  padding: 4px 8px;
}

/* ---- 搜索栏（导航下方） ---- */
.search-bar-section {
  background: var(--primary);
  padding: 14px 0;
}
.search-bar-inner {
  max-width: 700px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  gap: 0;
}
.search-bar-inner input {
  flex: 1;
  padding: 12px 20px;
  border: none;
  border-radius: 28px 0 0 28px;
  font-size: 15px;
  outline: none;
  background: #fff;
  color: var(--text-main);
}
.search-bar-inner button {
  padding: 12px 28px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 0 28px 28px 0;
  transition: var(--transition);
}
.search-bar-inner button:hover { background: var(--accent-light); }

/* ---- Hero Banner ---- */
.hero {
  position: relative;
  min-height: 520px;
  background: var(--bg-dark);
  overflow: hidden;
  display: flex;
  align-items: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/hero-banner.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.55;
  transition: opacity 0.5s;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8,15,28,0.92) 0%, rgba(8,15,28,0.55) 60%, rgba(8,15,28,0.1) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 60px 20px;
  max-width: 600px;
  margin-left: 8%;
}
.hero-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 16px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.4);
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
}
.hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.80);
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 13px 28px;
  border-radius: 28px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(232,160,32,0.35);
}
.btn-primary:hover { background: var(--accent-light); transform: translateY(-2px); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: #fff;
  padding: 13px 28px;
  border-radius: 28px;
  font-size: 15px;
  font-weight: 600;
  border: 2px solid rgba(255,255,255,0.5);
  transition: var(--transition);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
}
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 28px; font-weight: 800; color: var(--accent); }
.hero-stat .label { font-size: 12px; color: rgba(255,255,255,0.65); margin-top: 2px; }

/* ---- Section通用 ---- */
.section { padding: 64px 0; }
.section-alt { background: var(--bg-light); }
.section-dark { background: var(--bg-dark); color: #fff; }
.section-primary { background: var(--primary); color: #fff; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-tag {
  display: inline-block;
  background: rgba(232,160,32,0.12);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.section-dark .section-tag { background: rgba(232,160,32,0.2); }
.section-title {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
  line-height: 1.3;
}
.section-dark .section-title { color: #fff; }
.section-desc {
  font-size: 15px;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
}
.section-dark .section-desc { color: rgba(255,255,255,0.65); }

/* ---- 视频卡片 ---- */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  background: var(--bg-mid);
  overflow: hidden;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.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(0,0,0,0.0);
  transition: var(--transition);
  opacity: 0;
}
.video-card:hover .video-play-btn { opacity: 1; background: rgba(0,0,0,0.35); }
.play-icon {
  width: 56px;
  height: 56px;
  background: rgba(232,160,32,0.92);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.85);
  transition: transform 0.25s;
}
.video-card:hover .play-icon { transform: scale(1); }
.play-icon::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: 10px;
  background: rgba(0,0,0,0.72);
  color: #fff;
  font-size: 12px;
  padding: 2px 7px;
  border-radius: 4px;
}
.video-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 4px;
}
.video-info { padding: 14px 16px 16px; }
.video-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  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-muted);
}
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-stats {
  display: flex;
  gap: 14px;
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-muted);
}
.video-stats span { display: flex; align-items: center; gap: 4px; }

/* ---- 图片卡片（美图展示） ---- */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.photo-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 3/4;
  background: var(--bg-mid);
  cursor: pointer;
}
.photo-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.photo-card:hover img { transform: scale(1.06); }
.photo-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  padding: 20px 14px 14px;
  transform: translateY(100%);
  transition: var(--transition);
}
.photo-card:hover .photo-overlay { transform: translateY(0); }
.photo-overlay .name { color: #fff; font-size: 14px; font-weight: 600; }
.photo-overlay .tag { color: var(--accent); font-size: 12px; margin-top: 2px; }

/* ---- 专家卡片 ---- */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px 20px 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); }
.expert-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 14px;
  font-size: 32px;
  color: #fff;
  font-weight: 700;
  overflow: hidden;
}
.expert-avatar img { width: 100%; height: 100%; object-fit: cover; }
.expert-name { font-size: 17px; font-weight: 700; color: var(--text-main); margin-bottom: 4px; }
.expert-role { font-size: 13px; color: var(--accent); font-weight: 600; margin-bottom: 8px; }
.expert-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 14px; }
.expert-tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 16px; }
.tag {
  background: rgba(13,43,78,0.08);
  color: var(--primary);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 20px;
}
.expert-btns { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  font-size: 12px;
  padding: 6px 14px;
  border-radius: 20px;
  font-weight: 600;
  transition: var(--transition);
}
.btn-sm.primary { background: var(--accent); color: #fff; }
.btn-sm.primary:hover { background: var(--accent-light); }
.btn-sm.outline { border: 1.5px solid var(--primary); color: var(--primary); }
.btn-sm.outline:hover { background: var(--primary); color: #fff; }

/* ---- 功能模块卡片 ---- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.feature-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
}
.feature-card:hover {
  background: rgba(255,255,255,0.10);
  border-color: var(--accent);
  transform: translateY(-4px);
}
.feature-icon {
  font-size: 36px;
  margin-bottom: 14px;
  display: block;
}
.feature-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.feature-desc { font-size: 13px; color: rgba(255,255,255,0.60); line-height: 1.6; }

/* ---- 合作品牌 ---- */
.partner-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  align-items: center;
}
.partner-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 28px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
  min-width: 120px;
  text-align: center;
}
.partner-item:hover { color: var(--primary); border-color: var(--primary); box-shadow: var(--shadow); }

/* ---- 评论区 ---- */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.review-card:hover { box-shadow: var(--shadow-hover); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
}
.review-user { font-size: 14px; font-weight: 600; color: var(--text-main); }
.review-date { font-size: 12px; color: var(--text-muted); }
.review-stars { color: #f5a623; font-size: 14px; margin-bottom: 10px; }
.review-text { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.review-tag { display: inline-block; background: rgba(13,43,78,0.07); color: var(--primary); font-size: 11px; padding: 2px 8px; border-radius: 10px; margin-top: 10px; }

/* ---- FAQ ---- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: var(--primary); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  background: var(--card-bg);
  transition: var(--transition);
  user-select: none;
}
.faq-question:hover { background: rgba(13,43,78,0.04); }
.faq-item.open .faq-question { color: var(--primary); background: rgba(13,43,78,0.04); }
.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-item.open .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  background: var(--card-bg);
}
.faq-item.open .faq-answer { max-height: 300px; }
.faq-answer-inner { padding: 0 20px 18px; font-size: 14px; color: var(--text-muted); line-height: 1.8; }

/* ---- 联系我们 ---- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info h3 { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 20px; }
.contact-item { display: flex; gap: 14px; margin-bottom: 18px; align-items: flex-start; }
.contact-icon {
  width: 40px;
  height: 40px;
  background: rgba(232,160,32,0.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.contact-label { font-size: 12px; color: rgba(255,255,255,0.5); margin-bottom: 2px; }
.contact-value { font-size: 15px; color: #fff; font-weight: 500; }
.qr-grid { display: flex; gap: 24px; flex-wrap: wrap; }
.qr-item { text-align: center; }
.qr-item img { width: 120px; height: 120px; border-radius: var(--radius-sm); border: 3px solid rgba(255,255,255,0.15); }
.qr-item p { font-size: 12px; color: rgba(255,255,255,0.65); margin-top: 8px; }

/* ---- 社交分享 ---- */
.share-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  transition: var(--transition);
  color: #fff;
}
.share-btn.wechat { background: #07C160; }
.share-btn.weibo { background: #E6162D; }
.share-btn.douyin { background: #010101; border: 1px solid #333; }
.share-btn.bilibili { background: #00A1D6; }
.share-btn:hover { opacity: 0.85; transform: translateY(-2px); }

/* ---- 面包屑 ---- */
.breadcrumb {
  background: var(--bg-light);
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
}
.breadcrumb-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb-inner a { color: var(--primary); }
.breadcrumb-inner a:hover { color: var(--accent); }
.breadcrumb-inner span { color: var(--text-muted); }

/* ---- 页脚 ---- */
.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;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .logo-wrap { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand .logo-wrap img { height: 36px; }
.footer-brand .brand-name { font-size: 20px; font-weight: 700; color: #fff; }
.footer-brand p { font-size: 13px; line-height: 1.8; color: rgba(255,255,255,0.55); margin-bottom: 20px; }
.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: 13px; color: rgba(255,255,255,0.55); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); }
.footer-bottom {
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.55); }
.footer-bottom a:hover { color: var(--accent); }
.footer-update { color: rgba(255,255,255,0.5); font-size: 12px; }

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

/* ---- 加入指南 ---- */
.guide-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 24px;
  counter-reset: step;
}
.guide-step {
  text-align: center;
  padding: 28px 16px;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  position: relative;
}
.guide-step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 28px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 28px;
}
.guide-step-icon { font-size: 36px; margin-bottom: 12px; }
.guide-step h4 { font-size: 15px; font-weight: 700; color: var(--text-main); margin-bottom: 8px; }
.guide-step p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ---- 内页Banner ---- */
.page-hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--bg-dark) 100%);
  padding: 60px 0 50px;
  text-align: center;
  color: #fff;
}
.page-hero h1 { font-size: clamp(28px, 4vw, 44px); font-weight: 800; margin-bottom: 12px; }
.page-hero p { font-size: 16px; color: rgba(255,255,255,0.72); max-width: 560px; margin: 0 auto; }

/* ---- 统计数字 ---- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  padding: 28px 16px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.1);
}
.stat-num { font-size: 36px; font-weight: 800; color: var(--accent); }
.stat-label { font-size: 13px; color: rgba(255,255,255,0.6); margin-top: 6px; }

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

/* ---- 移动端汉堡菜单 ---- */
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: var(--bg-dark);
  z-index: 999;
  padding: 16px;
  border-top: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  color: rgba(255,255,255,0.82);
  font-size: 15px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.mobile-menu a:hover { color: var(--accent); background: rgba(232,160,32,0.1); }

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .navbar-search { display: none; }
  .nav-mobile-btn { display: block; }
  .hero { min-height: 380px; }
  .hero-content { margin-left: 0; padding: 40px 20px; }
  .hero-stats { gap: 20px; }
  .hero-stat .num { font-size: 22px; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .photo-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-steps { grid-template-columns: repeat(2, 1fr); }
  .qr-grid { justify-content: center; }
}
@media (max-width: 480px) {
  .hero h1 { font-size: 26px; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
  .video-grid { grid-template-columns: 1fr; }
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-steps { grid-template-columns: 1fr; }
  .search-bar-section { padding: 10px 0; }
}

/* ---- 懒加载占位 ---- */
img[data-src] { background: linear-gradient(90deg, #e8eef5 25%, #f5f7fa 50%, #e8eef5 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ---- 返回顶部 ---- */
#back-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 500;
  box-shadow: 0 4px 16px rgba(232,160,32,0.4);
}
#back-top.show { opacity: 1; transform: translateY(0); }
#back-top:hover { background: var(--accent-light); }