/* =============================================
   萝莉岛修车改装视频社区 - cat448.cn
   主题：深红·碳纤维·极速
   主色：#e74c3c (战神红)
   背景：#0d0a0a (极深黑)
   ============================================= */

/* === CSS变量 === */
:root {
  --primary: #e74c3c;
  --primary-dark: #c0392b;
  --primary-light: #ff6b6b;
  --accent: #f39c12;
  --accent2: #3498db;
  --bg-dark: #0d0a0a;
  --bg-card: #1a1212;
  --bg-card2: #221818;
  --bg-section: #150f0f;
  --text-main: #f0e8e8;
  --text-muted: #9a8585;
  --text-light: #c8b8b8;
  --border: #2e1e1e;
  --border-light: #3d2a2a;
  --shadow: 0 4px 20px rgba(231,76,60,0.15);
  --shadow-card: 0 2px 12px rgba(0,0,0,0.5);
  --radius: 8px;
  --radius-lg: 16px;
  --transition: 0.3s ease;
  --font-main: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  --header-h: 64px;
  --search-h: 80px;
}

/* === 重置 === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary-light); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font-main); }
input, textarea { font-family: var(--font-main); }

/* === 容器 === */
.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-dark { background: var(--bg-dark); }
.section-alt { background: var(--bg-section); }
.section-card { background: var(--bg-card); }

/* === 标题 === */
.section-header { text-align: center; margin-bottom: 50px; }
.section-tag {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  padding: 4px 14px;
  border-radius: 20px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 14px;
}
.section-title span { color: var(--primary); }
.section-subtitle {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* === 按钮 === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 15px rgba(231,76,60,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(231,76,60,0.5);
  color: white;
}
.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--primary);
  color: white;
}
.btn-ghost {
  color: var(--text-muted);
  border: 1px solid var(--border-light);
}
.btn-ghost:hover { color: var(--primary); border-color: var(--primary); }

/* === 头部 === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13,10,10,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  height: var(--header-h);
  gap: 32px;
}
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.header-logo img { width: 40px; height: 40px; border-radius: 8px; }
.logo-text {
  font-size: 22px;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: 1px;
}
.main-nav { flex: 1; }
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-light);
  border-radius: var(--radius);
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: rgba(231,76,60,0.1);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--radius);
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-main);
  transition: all var(--transition);
  border-radius: 2px;
}

/* === 搜索栏 === */
.search-bar-wrap {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 10px 0;
}
.search-form { display: flex; flex-direction: column; gap: 8px; }
.search-input-wrap {
  display: flex;
  align-items: center;
  background: var(--bg-dark);
  border: 1.5px solid var(--border-light);
  border-radius: 30px;
  overflow: hidden;
  transition: border-color var(--transition);
  max-width: 700px;
}
.search-input-wrap:focus-within { border-color: var(--primary); }
.search-input {
  flex: 1;
  padding: 10px 20px;
  background: none;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 14px;
}
.search-input::placeholder { color: var(--text-muted); }
.search-btn {
  padding: 10px 20px;
  background: var(--primary);
  color: white;
  border: none;
  cursor: pointer;
  transition: background var(--transition);
}
.search-btn:hover { background: var(--primary-dark); }
.search-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.search-tag {
  padding: 3px 10px;
  background: rgba(231,76,60,0.1);
  border: 1px solid rgba(231,76,60,0.25);
  border-radius: 20px;
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}
.search-tag:hover { background: rgba(231,76,60,0.2); color: var(--primary); }
.search-toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: var(--bg-card2);
  color: var(--text-main);
  padding: 12px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s;
  z-index: 9999;
  white-space: nowrap;
}
.search-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* === Hero Banner === */
.hero-banner {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/banner.jpg');
  background-size: cover;
  background-position: center;
  filter: brightness(0.45);
  transform: scale(1.03);
  transition: transform 8s ease;
}
.hero-banner:hover .hero-bg { transform: scale(1); }
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,10,10,0.85) 0%, rgba(231,76,60,0.15) 50%, rgba(13,10,10,0.75) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 750px;
  padding: 80px 0;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(231,76,60,0.2);
  border: 1px solid rgba(231,76,60,0.4);
  color: var(--primary-light);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-badge::before { content: '▶'; font-size: 10px; }
.hero-h1 {
  font-size: clamp(32px, 6vw, 64px);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.hero-h1 .brand { color: var(--primary); }
.hero-desc {
  font-size: 17px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 600px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 48px; }
.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat-num {
  font-size: 28px;
  font-weight: 900;
  color: var(--primary);
  display: block;
}
.hero-stat-label { font-size: 12px; 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-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-card2);
}
.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(0,0,0,0.3);
  opacity: 0;
  transition: opacity var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 56px;
  height: 56px;
  background: rgba(231,76,60,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.85);
  transition: transform var(--transition);
  box-shadow: 0 4px 20px rgba(231,76,60,0.5);
}
.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 white;
  margin-left: 4px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.8);
  color: white;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 600;
}
.video-quality {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--primary);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  letter-spacing: 1px;
}
.video-info { padding: 14px; }
.video-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.5;
  margin-bottom: 8px;
  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: 12px;
  color: var(--text-muted);
}
.video-tags { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 8px; }
.video-tag {
  padding: 2px 8px;
  background: rgba(231,76,60,0.1);
  border: 1px solid rgba(231,76,60,0.2);
  border-radius: 10px;
  font-size: 11px;
  color: var(--primary-light);
}
.video-stats { display: flex; gap: 12px; align-items: center; }
.video-stat { display: flex; align-items: center; gap: 3px; }

/* === 视频筛选 === */
.video-filter {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.filter-btn {
  padding: 7px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  border: 1.5px solid var(--border-light);
  color: var(--text-muted);
  background: var(--bg-card);
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

/* === 视频弹窗 === */
.video-modal {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.92);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.video-modal.open { opacity: 1; pointer-events: all; }
.video-modal-inner {
  width: min(900px, 95vw);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-light);
  transform: scale(0.92);
  transition: transform 0.3s;
}
.video-modal.open .video-modal-inner { transform: scale(1); }
.video-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.video-modal-title { font-size: 15px; font-weight: 700; }
.video-modal-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-dark);
  color: var(--text-muted);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.video-modal-close:hover { background: var(--primary); color: white; }
.video-modal-body { position: relative; aspect-ratio: 16/9; background: #000; }
.video-modal-body video { width: 100%; height: 100%; }
.video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: linear-gradient(135deg, #1a0a0a, #0d0a0a);
}
.video-placeholder .big-play {
  width: 80px;
  height: 80px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition);
  box-shadow: 0 0 30px rgba(231,76,60,0.4);
}
.video-placeholder .big-play:hover { transform: scale(1.1); }
.video-placeholder .big-play::after {
  content: '';
  width: 0; height: 0;
  border-style: solid;
  border-width: 14px 0 14px 24px;
  border-color: transparent transparent transparent white;
  margin-left: 6px;
}
.video-placeholder p { color: var(--text-muted); font-size: 14px; }

/* === 功能卡片 === */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transition: transform var(--transition);
}
.feature-card:hover { border-color: var(--primary); transform: translateY(-3px); }
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 52px; height: 52px;
  background: rgba(231,76,60,0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}
.feature-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}
.feature-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* === TikTok短视频 === */
.tiktok-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
}
.tiktok-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
}
.tiktok-card:hover { border-color: var(--primary); transform: translateY(-3px); }
.tiktok-thumb {
  position: relative;
  aspect-ratio: 9/16;
  background: var(--bg-card2);
  overflow: hidden;
}
.tiktok-thumb img { width: 100%; height: 100%; object-fit: cover; }
.tiktok-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.25);
  opacity: 0;
  transition: opacity var(--transition);
}
.tiktok-card:hover .tiktok-play { opacity: 1; }
.tiktok-play-icon {
  width: 40px; height: 40px;
  background: rgba(231,76,60,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.tiktok-play-icon::after {
  content: '';
  width: 0; height: 0;
  border-style: solid;
  border-width: 7px 0 7px 12px;
  border-color: transparent transparent transparent white;
  margin-left: 3px;
}
.tiktok-info { padding: 10px; }
.tiktok-title { font-size: 12px; font-weight: 600; color: var(--text-main); line-height: 1.4; margin-bottom: 4px; }
.tiktok-views { font-size: 11px; color: var(--text-muted); }

/* === AI赋能 === */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.ai-card {
  background: linear-gradient(135deg, var(--bg-card), var(--bg-card2));
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.ai-card::after {
  content: '';
  position: absolute;
  bottom: 0; right: 0;
  width: 80px; height: 80px;
  background: radial-gradient(circle, rgba(231,76,60,0.08), transparent);
  border-radius: 50%;
}
.ai-card:hover { border-color: var(--primary); transform: translateY(-3px); box-shadow: var(--shadow); }
.ai-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
  letter-spacing: 1px;
  margin-bottom: 12px;
}
.ai-title { font-size: 16px; font-weight: 700; color: var(--text-main); margin-bottom: 10px; }
.ai-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* === 社区功能 === */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.community-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  gap: 16px;
  transition: all var(--transition);
}
.community-card:hover { border-color: var(--primary); transform: translateX(4px); }
.community-icon {
  width: 48px; height: 48px;
  background: rgba(231,76,60,0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.community-title { font-size: 15px; font-weight: 700; color: var(--text-main); margin-bottom: 6px; }
.community-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* === 专家卡片 === */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.expert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  transition: all var(--transition);
}
.expert-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow); }
.expert-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 900;
  color: white;
  margin: 0 auto 14px;
  box-shadow: 0 4px 15px rgba(231,76,60,0.3);
}
.expert-name { font-size: 16px; font-weight: 700; color: var(--text-main); margin-bottom: 4px; }
.expert-role { font-size: 12px; color: var(--primary); font-weight: 600; margin-bottom: 8px; }
.expert-cert { font-size: 12px; color: var(--text-muted); margin-bottom: 12px; line-height: 1.5; }
.expert-actions { display: flex; gap: 8px; justify-content: center; }
.expert-btn {
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid var(--border-light);
  color: var(--text-muted);
  transition: all var(--transition);
}
.expert-btn:hover { border-color: var(--primary); color: var(--primary); }

/* === 品牌墙 === */
.brand-wall {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}
.brand-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  transition: all var(--transition);
  min-width: 100px;
  text-align: center;
}
.brand-item:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }

/* === 加入步骤 === */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  position: relative;
}
.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: all var(--transition);
}
.step-card:hover { border-color: var(--primary); }
.step-num {
  width: 48px; height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 900;
  color: white;
  margin: 0 auto 16px;
}
.step-title { font-size: 15px; font-weight: 700; color: var(--text-main); margin-bottom: 8px; }
.step-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* === FAQ === */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: var(--primary); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  gap: 12px;
}
.faq-q:hover { color: var(--primary); }
.faq-arrow {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(231,76,60,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition);
  color: var(--primary);
  font-size: 12px;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 22px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.faq-item.open .faq-a { max-height: 300px; padding: 0 22px 18px; }

/* === 用户评论 === */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px;
  transition: all var(--transition);
}
.review-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.review-avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}
.review-name { font-size: 14px; font-weight: 700; color: var(--text-main); }
.review-date { font-size: 11px; color: var(--text-muted); }
.review-stars { color: var(--accent); font-size: 13px; margin-bottom: 10px; }
.review-text { font-size: 13px; color: var(--text-light); line-height: 1.7; }
.review-tag {
  display: inline-block;
  margin-top: 10px;
  padding: 2px 8px;
  background: rgba(231,76,60,0.1);
  border-radius: 10px;
  font-size: 11px;
  color: var(--primary-light);
}

/* === 联系我们 === */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  text-align: center;
  transition: all var(--transition);
}
.contact-card:hover { border-color: var(--primary); transform: translateY(-3px); }
.contact-icon {
  font-size: 36px;
  margin-bottom: 14px;
  display: block;
}
.contact-title { font-size: 15px; font-weight: 700; color: var(--text-main); margin-bottom: 8px; }
.contact-val { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* === 面包屑 === */
.breadcrumb-nav { padding: 14px 0; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb-item a { color: var(--text-muted); }
.breadcrumb-item a:hover { color: var(--primary); }
.breadcrumb-item + .breadcrumb-item::before { content: '›'; margin-right: 6px; }
.breadcrumb-item:last-child { color: var(--primary); }

/* === 页脚 === */
.site-footer { background: #080606; border-top: 1px solid var(--border); }
.footer-main { padding: 60px 0 40px; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.footer-logo img { width: 44px; height: 44px; border-radius: 8px; }
.footer-logo span { font-size: 20px; font-weight: 900; color: var(--primary); }
.footer-desc { font-size: 13px; color: var(--text-muted); line-height: 1.8; margin-bottom: 16px; }
.footer-social { display: flex; gap: 8px; flex-wrap: wrap; }
.social-link {
  padding: 6px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  font-size: 12px;
  color: var(--text-muted);
  transition: all var(--transition);
}
.social-link:hover { border-color: var(--primary); color: var(--primary); }
.footer-title { font-size: 14px; font-weight: 700; color: var(--text-main); margin-bottom: 16px; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-links a { font-size: 13px; color: var(--text-muted); transition: color var(--transition); }
.footer-links a:hover { color: var(--primary); }
.contact-items { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.contact-item { display: flex; gap: 8px; font-size: 12px; }
.contact-label { color: var(--text-muted); flex-shrink: 0; }
.contact-val { color: var(--text-light); }
.footer-qrcodes { display: flex; gap: 14px; }
.qr-item { text-align: center; }
.qr-placeholder {
  width: 80px; height: 80px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 6px;
}
.qr-item p { font-size: 11px; color: var(--text-muted); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
}
.footer-bottom-inner { text-align: center; display: flex; flex-direction: column; gap: 6px; }
.copyright { font-size: 13px; color: var(--text-muted); }
.footer-icp { font-size: 12px; color: #5a4a4a; }
.footer-update { font-size: 12px; color: #5a4a4a; }

/* === 分享浮窗 === */
.share-float {
  position: fixed;
  right: 24px;
  bottom: 80px;
  z-index: 500;
}
.share-toggle {
  width: 46px; height: 46px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 15px rgba(231,76,60,0.4);
  transition: all var(--transition);
}
.share-toggle:hover { transform: scale(1.1); }
.share-panel {
  position: absolute;
  bottom: 56px;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 100px;
  box-shadow: var(--shadow-card);
}
.share-item {
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  transition: all var(--transition);
}
.share-item:hover { background: rgba(231,76,60,0.1); color: var(--primary); }

/* === 回到顶部 === */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 42px; height: 42px;
  background: var(--bg-card2);
  border: 1px solid var(--border-light);
  border-radius: 50%;
  color: var(--text-muted);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  transition: all var(--transition);
}
.back-to-top:hover { background: var(--primary); color: white; border-color: var(--primary); }

/* === 内页Banner === */
.page-banner {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-section) 100%);
  border-bottom: 1px solid var(--border);
  padding: 48px 0;
}
.page-banner-title {
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
}
.page-banner-title span { color: var(--primary); }
.page-banner-desc { font-size: 15px; color: var(--text-muted); }

/* === 响应式 === */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: calc(var(--header-h) + var(--search-h));
    left: 0; right: 0;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border);
    padding: 16px;
    transform: translateY(-110%);
    transition: transform var(--transition);
    z-index: 999;
  }
  .main-nav.open { transform: translateY(0); }
  .nav-list { flex-direction: column; align-items: flex-start; }
  .hero-banner { min-height: 480px; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .tiktok-grid { grid-template-columns: repeat(3, 1fr); }
  .expert-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .tiktok-grid { grid-template-columns: repeat(2, 1fr); }
  .expert-grid { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .share-float { right: 12px; bottom: 70px; }
  .back-to-top { right: 12px; bottom: 16px; }
}

/* === 动画 === */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.animate-in { animation: fadeInUp 0.5s ease forwards; }

/* === 懒加载占位 === */
img[loading="lazy"] { background: var(--bg-card2); }