/* =============================================
   黄色仓库 - 主样式文件
   原创设计 © 2025 bdbapp.cn
   ============================================= */

/* CSS变量 */
:root {
  --primary: #E8527A;
  --primary-dark: #C73A60;
  --primary-light: #FF8FAD;
  --secondary: #FF8C69;
  --accent: #7B4FD4;
  --dark: #1A1A2E;
  --dark2: #16213E;
  --dark3: #0F3460;
  --text-main: #2D2D2D;
  --text-sub: #666;
  --text-light: #999;
  --bg-light: #FFF5F7;
  --bg-gray: #F8F9FA;
  --border: #F0E0E5;
  --white: #FFFFFF;
  --shadow-sm: 0 2px 12px rgba(232,82,122,0.10);
  --shadow-md: 0 6px 30px rgba(232,82,122,0.16);
  --shadow-lg: 0 12px 50px rgba(232,82,122,0.22);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-main: 'PingFang SC','Microsoft YaHei','Hiragino Sans GB',sans-serif;
}

/* 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);
  color: var(--text-main);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: color 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; }

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

/* 通用容器 */
.container { max-width: 1240px; margin: 0 auto; padding: 0 20px; }
.section { padding: 72px 0; }
.section-sm { padding: 48px 0; }

/* 通用标题 */
.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--dark);
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}
.section-title span { color: var(--primary); }
.section-sub {
  font-size: 1rem;
  color: var(--text-sub);
  text-align: center;
  margin-bottom: 48px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-xl);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  box-shadow: 0 4px 18px rgba(232,82,122,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(232,82,122,0.45);
  color: var(--white);
}
.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}
.btn-ghost {
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.15);
  color: var(--white);
}

/* =============================================
   顶部公告栏
   ============================================= */
.top-notice {
  background: linear-gradient(90deg, var(--dark), var(--dark3), var(--dark));
  color: rgba(255,255,255,0.85);
  font-size: 0.82rem;
  padding: 8px 0;
  text-align: center;
  letter-spacing: 0.3px;
}
.top-notice a { color: var(--primary-light); margin: 0 6px; }

/* =============================================
   导航栏
   ============================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 68px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.site-logo img.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
}
.site-logo img.logo-full {
  height: 38px;
  width: auto;
}
.site-logo .logo-text {
  font-size: 1.3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 导航菜单 */
.main-nav { flex: 1; }
.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-list li a {
  display: block;
  padding: 8px 14px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-main);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  position: relative;
}
.nav-list li a:hover,
.nav-list li a.active {
  color: var(--primary);
  background: var(--bg-light);
}
.nav-list li a.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

/* 搜索框 */
.header-search {
  position: relative;
  flex-shrink: 0;
}
.header-search input {
  width: 200px;
  padding: 8px 40px 8px 16px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-xl);
  font-size: 0.88rem;
  color: var(--text-main);
  background: var(--bg-light);
  transition: all var(--transition);
  font-family: var(--font-main);
  outline: none;
}
.header-search input:focus {
  border-color: var(--primary);
  background: var(--white);
  width: 240px;
  box-shadow: 0 0 0 3px rgba(232,82,122,0.12);
}
.header-search button {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary);
  font-size: 1rem;
  padding: 0;
}
.search-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 12px;
  z-index: 100;
}
.search-dropdown.show { display: block; }
.search-hot-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.search-hot-tags span {
  font-size: 0.78rem;
  color: var(--text-sub);
  margin-bottom: 6px;
  width: 100%;
}
.search-hot-tags a {
  font-size: 0.82rem;
  padding: 4px 12px;
  background: var(--bg-light);
  border-radius: 20px;
  color: var(--primary);
  border: 1px solid var(--border);
}
.search-hot-tags a:hover { background: var(--primary); color: var(--white); }

/* 导航右侧 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-actions .btn { padding: 8px 20px; font-size: 0.88rem; }

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition);
}

/* =============================================
   Hero Banner
   ============================================= */
.hero {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--dark);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/banner_hero.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.55;
  transform: scale(1.03);
  transition: transform 8s ease;
}
.hero:hover .hero-bg { transform: scale(1); }
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(26,26,46,0.85) 40%, rgba(26,26,46,0.3) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(232,82,122,0.2);
  border: 1px solid rgba(232,82,122,0.4);
  color: var(--primary-light);
  font-size: 0.82rem;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
}
.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--primary-light);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}
.hero h1 {
  font-size: 3rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: -1px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.78);
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.hero-stat-item { text-align: center; }
.hero-stat-item .num {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--white);
  display: block;
}
.hero-stat-item .num span { color: var(--primary-light); }
.hero-stat-item .label {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.6);
}

/* =============================================
   视频卡片
   ============================================= */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.video-card {
  background: var(--white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--dark);
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.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(255,255,255,0.95);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  transform: scale(0.85);
  transition: transform var(--transition);
}
.video-card:hover .play-icon { transform: scale(1); }
.play-icon::after {
  content: '';
  border-style: solid;
  border-width: 10px 0 10px 18px;
  border-color: transparent transparent transparent var(--primary);
  margin-left: 4px;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: var(--white);
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--primary);
  color: var(--white);
  font-size: 0.72rem;
  padding: 2px 10px;
  border-radius: 4px;
  font-weight: 600;
}
.video-info { padding: 14px 16px; }
.video-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-light);
}
.video-meta .author {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-sub);
  font-weight: 500;
}
.video-meta .author img {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  object-fit: cover;
}
.video-stats {
  display: flex;
  gap: 10px;
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--text-light);
}
.video-stats span { display: flex; align-items: center; gap: 4px; }

/* =============================================
   分类标签
   ============================================= */
.cat-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.cat-tab {
  padding: 8px 20px;
  border-radius: var(--radius-xl);
  font-size: 0.9rem;
  font-weight: 500;
  border: 1.5px solid var(--border);
  color: var(--text-sub);
  cursor: pointer;
  transition: all var(--transition);
  background: var(--white);
}
.cat-tab:hover,
.cat-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

/* =============================================
   功能模块卡片
   ============================================= */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.feature-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
  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(--secondary));
  transform: scaleX(0);
  transition: transform var(--transition);
}
.feature-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 64px;
  height: 64px;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  font-size: 1.8rem;
  transition: all var(--transition);
}
.feature-card:hover .feature-icon {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}
.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--dark);
}
.feature-card p {
  font-size: 0.88rem;
  color: var(--text-sub);
  line-height: 1.7;
}

/* =============================================
   专家展示
   ============================================= */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}
.expert-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--border);
}
.expert-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.expert-photo {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
}
.expert-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.expert-card:hover .expert-photo img { transform: scale(1.05); }
.expert-badge {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: 20px;
  font-weight: 600;
}
.expert-info { padding: 20px; }
.expert-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}
.expert-title {
  font-size: 0.85rem;
  color: var(--primary);
  margin-bottom: 10px;
  font-weight: 500;
}
.expert-desc {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 14px;
}
.expert-awards {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}
.expert-awards span {
  font-size: 0.75rem;
  background: var(--bg-light);
  color: var(--primary);
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
}
.expert-actions { display: flex; gap: 8px; }
.expert-actions .btn { flex: 1; justify-content: center; padding: 8px 12px; font-size: 0.82rem; }

/* =============================================
   用户评价
   ============================================= */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}
.review-card {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all var(--transition);
  position: relative;
}
.review-card::before {
  content: '\201C';
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 4rem;
  color: var(--bg-light);
  font-family: Georgia, serif;
  line-height: 1;
}
.review-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}
.review-stars {
  display: flex;
  gap: 3px;
  margin-bottom: 12px;
  color: #FFB800;
  font-size: 1rem;
}
.review-text {
  font-size: 0.92rem;
  color: var(--text-main);
  line-height: 1.7;
  margin-bottom: 16px;
}
.review-user {
  display: flex;
  align-items: center;
  gap: 10px;
}
.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;
  color: var(--white);
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}
.review-user-info .name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--dark);
}
.review-user-info .date {
  font-size: 0.78rem;
  color: var(--text-light);
}

/* =============================================
   FAQ
   ============================================= */
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item.open { border-color: var(--primary-light); box-shadow: var(--shadow-sm); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 0.97rem;
  font-weight: 600;
  color: var(--dark);
  user-select: none;
  gap: 16px;
}
.faq-q:hover { color: var(--primary); }
.faq-q .faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1rem;
  color: var(--primary);
  transition: transform var(--transition);
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--primary); color: var(--white); }
.faq-a {
  display: none;
  padding: 0 22px 18px;
  font-size: 0.9rem;
  color: var(--text-sub);
  line-height: 1.8;
}
.faq-item.open .faq-a { display: block; }

/* =============================================
   合作品牌
   ============================================= */
.partner-logos {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  align-items: center;
}
.partner-logo {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 28px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-sub);
  transition: all var(--transition);
  min-width: 120px;
  text-align: center;
}
.partner-logo:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

/* =============================================
   联系/二维码区
   ============================================= */
.contact-section { background: var(--bg-light); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.contact-info h2 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 16px;
}
.contact-info p {
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 24px;
}
.contact-list { display: flex; flex-direction: column; gap: 14px; }
.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.92rem;
}
.contact-item .icon {
  width: 40px;
  height: 40px;
  background: var(--white);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}
.contact-item .text strong { display: block; color: var(--dark); font-weight: 600; }
.contact-item .text span { color: var(--text-sub); font-size: 0.85rem; }
.qr-group {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}
.qr-item { text-align: center; }
.qr-item img {
  width: 140px;
  height: 140px;
  border-radius: var(--radius-md);
  border: 3px solid var(--border);
  object-fit: cover;
}
.qr-item p {
  font-size: 0.85rem;
  color: var(--text-sub);
  margin-top: 8px;
}

/* =============================================
   社区入口
   ============================================= */
.community-section { background: linear-gradient(135deg, var(--dark), var(--dark3)); }
.community-section .section-title { color: var(--white); }
.community-section .section-sub { color: rgba(255,255,255,0.6); }
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.community-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition);
  cursor: pointer;
}
.community-card:hover {
  background: rgba(232,82,122,0.2);
  border-color: var(--primary-light);
  transform: translateY(-4px);
}
.community-card .icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
  display: block;
}
.community-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 6px;
}
.community-card p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
}

/* =============================================
   分享按钮
   ============================================= */
.share-section { background: var(--bg-gray); }
.share-btns {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.share-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-xl);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}
.share-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,0.12); }
.share-wechat { background: #07C160; color: var(--white); }
.share-weibo { background: #E6162D; color: var(--white); }
.share-douyin { background: #000; color: var(--white); }
.share-bili { background: #00A1D6; color: var(--white); }

/* =============================================
   页脚
   ============================================= */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .logo-text {
  font-size: 1.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  display: block;
}
.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.55);
  margin-bottom: 20px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: all var(--transition);
}
.footer-social a:hover { background: var(--primary); color: var(--white); }
.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--primary-light); }
.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.55); }
.footer-bottom a:hover { color: var(--primary-light); }
.update-time { color: rgba(255,255,255,0.5); }

/* =============================================
   面包屑
   ============================================= */
.breadcrumb {
  background: var(--bg-light);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-light);
}
.breadcrumb-list a { color: var(--text-sub); }
.breadcrumb-list a:hover { color: var(--primary); }
.breadcrumb-list .sep { color: var(--border); }
.breadcrumb-list .current { color: var(--primary); font-weight: 500; }

/* =============================================
   页面头部 (内页)
   ============================================= */
.page-hero {
  background: linear-gradient(135deg, var(--dark), var(--dark3));
  padding: 60px 0;
  text-align: center;
}
.page-hero h1 {
  font-size: 2.4rem;
  font-weight: 900;
  color: var(--white);
  margin-bottom: 12px;
}
.page-hero h1 span { color: var(--primary-light); }
.page-hero p {
  font-size: 1rem;
  color: rgba(255,255,255,0.65);
  max-width: 560px;
  margin: 0 auto;
}

/* =============================================
   加入社区 How-To
   ============================================= */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 24px;
  counter-reset: step;
}
.howto-step {
  background: var(--white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  text-align: center;
  position: relative;
  transition: all var(--transition);
}
.howto-step:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
  transform: translateY(-4px);
}
.step-num {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  margin: 0 auto 16px;
}
.howto-step h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}
.howto-step p {
  font-size: 0.85rem;
  color: var(--text-sub);
  line-height: 1.7;
}

/* =============================================
   AI赋能区块
   ============================================= */
.ai-section { background: linear-gradient(135deg, #0F0C29, #302B63, #24243E); }
.ai-section .section-title { color: var(--white); }
.ai-section .section-sub { color: rgba(255,255,255,0.6); }
.ai-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.ai-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition);
}
.ai-card:hover {
  background: rgba(232,82,122,0.12);
  border-color: rgba(232,82,122,0.4);
  transform: translateY(-4px);
}
.ai-card .ai-icon {
  font-size: 2rem;
  margin-bottom: 14px;
}
.ai-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.ai-card p {
  font-size: 0.87rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
}

/* =============================================
   直播区块
   ============================================= */
.live-section { background: var(--bg-light); }
.live-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: center;
}
.live-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.live-image img { width: 100%; display: block; }
.live-content h2 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 16px;
  line-height: 1.3;
}
.live-content h2 span { color: var(--primary); }
.live-content p {
  color: var(--text-sub);
  line-height: 1.8;
  margin-bottom: 24px;
}
.live-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}
.live-feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.92rem;
  color: var(--text-main);
}
.live-feature-item .dot {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  flex-shrink: 0;
}

/* =============================================
   响应式
   ============================================= */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .ai-features { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 2.4rem; }
}

@media (max-width: 768px) {
  .section { padding: 52px 0; }
  .section-title { font-size: 1.6rem; }
  .hero { min-height: 460px; }
  .hero h1 { font-size: 1.9rem; }
  .hero-stats { gap: 20px; }
  .hero-stat-item .num { font-size: 1.4rem; }
  .main-nav { display: none; }
  .main-nav.open { display: block; position: absolute; top: 68px; left: 0; right: 0; background: var(--white); border-bottom: 1px solid var(--border); padding: 12px 20px; box-shadow: var(--shadow-md); }
  .nav-list { flex-direction: column; gap: 2px; }
  .hamburger { display: flex; }
  .header-search input { width: 150px; }
  .header-search input:focus { width: 170px; }
  .contact-grid { grid-template-columns: 1fr; }
  .live-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .ai-features { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
  .expert-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
}

@media (max-width: 480px) {
  .container { padding: 0 14px; }
  .hero h1 { font-size: 1.6rem; }
  .hero-actions { flex-direction: column; }
  .hero-stats { flex-wrap: wrap; gap: 16px; }
  .section-title { font-size: 1.4rem; }
  .header-actions .btn:not(.btn-primary) { display: none; }
}

/* =============================================
   工具类
   ============================================= */
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.bg-light { background: var(--bg-light); }
.bg-gray { background: var(--bg-gray); }
.hidden { display: none; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-16 { gap: 16px; }
.w-full { width: 100%; }

/* 懒加载占位 */
img[data-src] {
  background: var(--bg-light);
  min-height: 60px;
}

/* =============================================
   导航下拉菜单
   ============================================= */
.nav-has-sub { position: relative; }
.nav-has-sub > a .nav-arrow {
  font-size: 0.65rem;
  margin-left: 2px;
  vertical-align: middle;
  transition: transform var(--transition);
}
.nav-has-sub:hover > a .nav-arrow { transform: rotate(180deg); }
.nav-sub {
  display: none;
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 150px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 8px 0;
  z-index: 200;
}
.nav-has-sub:hover .nav-sub { display: block; }
.nav-sub li a {
  display: block;
  padding: 9px 18px;
  font-size: 0.88rem;
  color: var(--text-main);
  border-radius: 0;
  white-space: nowrap;
}
.nav-sub li a:hover { color: var(--primary); background: var(--bg-light); }

/* =============================================
   顶部公告栏日期
   ============================================= */
.notice-date {
  margin-left: 16px;
  color: rgba(255,255,255,0.5);
  font-size: 0.78rem;
}

/* =============================================
   footer logo-link & footer-links
   ============================================= */
.footer-logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.footer-logo-img {
  border-radius: 8px;
  object-fit: cover;
}
.footer-domain { font-size: 0.82rem; color: rgba(255,255,255,0.4); margin-bottom: 16px; }
.footer-domain a { color: rgba(255,255,255,0.55); }
.footer-domain a:hover { color: var(--primary-light); }
.footer-links {
  padding: 18px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 0;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.footer-links a {
  color: rgba(255,255,255,0.45);
  padding: 2px 8px;
  border-radius: 4px;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--primary-light); }
.footer-copy a { color: rgba(255,255,255,0.55); }
.footer-copy a:hover { color: var(--primary-light); }

/* =============================================
   娱乐专区（TikTok风格短视频）
   ============================================= */
.tiktok-section {
  background: linear-gradient(135deg, #000000, #1a0a2e, #0d1b2a);
  padding: 72px 0;
}
.tiktok-section .section-title { color: var(--white); }
.tiktok-section .section-sub { color: rgba(255,255,255,0.6); }
.tiktok-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}
.tiktok-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 9/16;
  background: var(--dark3);
  cursor: pointer;
  transition: transform var(--transition);
}
.tiktok-card:hover { transform: scale(1.04); }
.tiktok-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.tiktok-card:hover img { transform: scale(1.08); }
.tiktok-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.75) 40%, transparent 70%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 14px 12px;
}
.tiktok-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.85);
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--transition);
  backdrop-filter: blur(4px);
}
.tiktok-card:hover .tiktok-play { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.tiktok-play::after {
  content: '';
  border-style: solid;
  border-width: 8px 0 8px 16px;
  border-color: transparent transparent transparent #fff;
  margin-left: 3px;
}
.tiktok-title {
  font-size: 0.78rem;
  color: var(--white);
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 6px;
}
.tiktok-stats {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.7);
  display: flex;
  gap: 10px;
}

/* =============================================
   美少女写真 / 福利姬影像区块
   ============================================= */
.photo-section { background: var(--bg-gray); }
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.photo-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  cursor: pointer;
}
.photo-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.photo-thumb {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
}
.photo-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.photo-card:hover .photo-thumb img { transform: scale(1.07); }
.photo-play-btn {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}
.photo-card:hover .photo-play-btn { opacity: 1; }
.photo-play-btn::after {
  content: '';
  border-style: solid;
  border-width: 10px 0 10px 20px;
  border-color: transparent transparent transparent #fff;
}
.photo-info { padding: 14px 16px; }
.photo-info h4 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 6px;
  line-height: 1.4;
}
.photo-tag {
  display: inline-block;
  font-size: 0.72rem;
  padding: 2px 10px;
  background: rgba(232,82,122,0.1);
  color: var(--primary);
  border-radius: 20px;
  margin-right: 6px;
}

/* =============================================
   亲密教育 / 情感科普区块
   ============================================= */
.edu-section { background: var(--white); }
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.edu-card {
  background: var(--bg-light);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all var(--transition);
  cursor: pointer;
}
.edu-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.edu-icon {
  font-size: 2.2rem;
  margin-bottom: 14px;
}
.edu-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}
.edu-card p {
  font-size: 0.87rem;
  color: var(--text-sub);
  line-height: 1.75;
  margin-bottom: 14px;
}
.edu-card .edu-tag {
  font-size: 0.75rem;
  color: var(--primary);
  background: rgba(232,82,122,0.08);
  padding: 3px 12px;
  border-radius: 20px;
  display: inline-block;
}

/* =============================================
   响应式补充
   ============================================= */
@media (max-width: 768px) {
  .tiktok-grid { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
  .edu-grid { grid-template-columns: 1fr; }
  .nav-sub { position: static; box-shadow: none; border: none; padding: 4px 0 4px 16px; }
  .nav-has-sub:hover .nav-sub { display: none; }
  .nav-has-sub.open .nav-sub { display: block; }
  .notice-date { display: none; }
}
@media (max-width: 480px) {
  .tiktok-grid { grid-template-columns: repeat(2, 1fr); }
  .photo-grid { grid-template-columns: 1fr 1fr; }
}