/* ============================================================
   抖阴 - 国内知名动物写真社区 | uepLbp.cn
   主样式文件 style.css
   原创设计 © 2025 抖阴
   ============================================================ */

/* ---- CSS变量 ---- */
:root {
  --primary: #0d6b5e;
  --primary-dark: #094d43;
  --primary-light: #12897a;
  --accent: #c8973a;
  --accent-light: #e8b55a;
  --bg-dark: #0a1a17;
  --bg-mid: #112820;
  --bg-light: #f5f9f7;
  --text-main: #1a2e28;
  --text-muted: #5a7a72;
  --text-light: #f0f7f5;
  --border: #d0e8e0;
  --card-bg: #ffffff;
  --shadow: 0 4px 24px rgba(13,107,94,0.10);
  --shadow-hover: 0 8px 36px rgba(13,107,94,0.18);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ---- 重置与基础 ---- */
*, *::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;
  color: var(--text-main);
  background: var(--bg-light);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
h1,h2,h3,h4,h5,h6 { font-weight: 700; line-height: 1.3; color: var(--text-main); }

/* ---- 干扰标签隐藏 ---- */
.dy-noise { display: none !important; visibility: hidden !important; }

/* ---- 容器 ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.container-wide { max-width: 1400px; margin: 0 auto; padding: 0 20px; }

/* ============================================================
   顶部公告栏
   ============================================================ */
.top-bar {
  background: var(--primary-dark);
  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 .top-bar-inner {
  display: flex; align-items: center; justify-content: space-between;
}
.top-bar-links a { margin-left: 16px; font-size: 12px; }

/* ============================================================
   头部导航
   ============================================================ */
.site-header {
  background: #fff;
  box-shadow: 0 2px 12px rgba(13,107,94,0.08);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  gap: 20px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.site-logo img.logo-img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
}
.site-logo img.logo-full {
  height: 44px;
  width: auto;
}
.logo-text {
  display: flex;
  flex-direction: column;
}
.logo-text .brand-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 2px;
  line-height: 1.1;
}
.logo-text .brand-slogan {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* 主导航 */
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  border-radius: 8px;
  white-space: nowrap;
  transition: var(--transition);
}
.main-nav a:hover, .main-nav a.active {
  background: var(--primary);
  color: #fff;
}

/* 搜索框 */
.header-search {
  display: flex;
  align-items: center;
  background: var(--bg-light);
  border: 1.5px solid var(--border);
  border-radius: 24px;
  padding: 6px 14px;
  gap: 8px;
  min-width: 200px;
  transition: var(--transition);
}
.header-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13,107,94,0.12);
}
.header-search input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 14px;
  color: var(--text-main);
  width: 100%;
}
.header-search input::placeholder { color: var(--text-muted); }
.header-search button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--primary);
  padding: 0;
  display: flex;
  align-items: center;
}
.search-bar-below {
  background: var(--bg-light);
  border-top: 1px solid var(--border);
  padding: 10px 0;
}
.search-bar-below .search-inner {
  display: flex;
  align-items: center;
  max-width: 600px;
  margin: 0 auto;
  background: #fff;
  border: 2px solid var(--primary);
  border-radius: 30px;
  overflow: hidden;
}
.search-bar-below input {
  flex: 1;
  border: none;
  outline: none;
  padding: 10px 20px;
  font-size: 15px;
  color: var(--text-main);
}
.search-bar-below button {
  background: var(--primary);
  border: none;
  color: #fff;
  padding: 10px 24px;
  font-size: 15px;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
}
.search-bar-below button:hover { background: var(--primary-dark); }

/* 汉堡菜单 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================================
   面包屑
   ============================================================ */
.breadcrumb {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 10px 0;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb span { margin: 0 6px; }

/* ============================================================
   Banner 首屏
   ============================================================ */
.hero-banner {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-dark);
}
.hero-banner .hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.55;
}
.hero-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(9,77,67,0.75) 0%, rgba(10,26,23,0.5) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  max-width: 680px;
}
.hero-content .hero-tag {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.hero-content h1 {
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 900;
  color: #fff;
  line-height: 1.15;
  margin-bottom: 16px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}
.hero-content .hero-desc {
  font-size: 17px;
  color: rgba(255,255,255,0.88);
  margin-bottom: 28px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 13px 32px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 15px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary:hover { background: var(--accent-light); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(200,151,58,0.4); }
.btn-outline {
  background: transparent;
  color: #fff;
  padding: 12px 30px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 15px;
  border: 2px solid rgba(255,255,255,0.7);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; color: #fff; }

/* 统计数字 */
.hero-stats {
  position: absolute;
  bottom: 40px;
  right: 0;
  z-index: 2;
  display: flex;
  gap: 0;
}
.stat-item {
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 16px 28px;
  text-align: center;
  color: #fff;
}
.stat-item:first-child { border-radius: 12px 0 0 12px; }
.stat-item:last-child { border-radius: 0 12px 12px 0; }
.stat-num { font-size: 26px; font-weight: 800; color: var(--accent-light); }
.stat-label { font-size: 12px; opacity: 0.8; margin-top: 2px; }

/* ============================================================
   通用区块
   ============================================================ */
.section { padding: 72px 0; }
.section-sm { padding: 48px 0; }
.section-dark { background: var(--bg-dark); color: var(--text-light); }
.section-dark h2, .section-dark h3 { color: #fff; }
.section-mid { background: var(--bg-mid); color: var(--text-light); }
.section-mid h2, .section-mid h3 { color: #fff; }
.section-teal { background: var(--primary); color: #fff; }
.section-teal h2, .section-teal h3 { color: #fff; }

.section-header { text-align: center; margin-bottom: 48px; }
.section-header .section-tag {
  display: inline-block;
  background: rgba(13,107,94,0.1);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.section-dark .section-header .section-tag,
.section-mid .section-header .section-tag {
  background: rgba(200,151,58,0.2);
  color: var(--accent-light);
}
.section-header h2 {
  font-size: clamp(22px, 3vw, 38px);
  margin-bottom: 12px;
}
.section-header p {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto;
}
.section-dark .section-header p,
.section-mid .section-header p { 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-grid-4 { grid-template-columns: repeat(4, 1fr); }
.video-grid-3 { grid-template-columns: repeat(3, 1fr); }

.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;
  overflow: hidden;
  background: var(--bg-mid);
}
.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); }
.play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  background: rgba(0,0,0,0.35);
  transition: var(--transition);
}
.video-card:hover .play-btn { opacity: 1; }
.play-btn-circle {
  width: 56px;
  height: 56px;
  background: rgba(255,255,255,0.92);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(0.8);
  transition: var(--transition);
}
.video-card:hover .play-btn-circle { transform: scale(1); }
.play-btn-circle svg { width: 22px; height: 22px; fill: var(--primary); margin-left: 3px; }
.video-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 12px;
}
.video-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.65);
  color: #fff;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 6px;
}
.video-info { padding: 16px; }
.video-info h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--text-muted);
}
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-meta svg { width: 13px; height: 13px; }
.video-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }
.video-tag {
  background: rgba(13,107,94,0.08);
  color: var(--primary);
  font-size: 11px;
  padding: 2px 10px;
  border-radius: 10px;
}

/* ============================================================
   特色模块卡片
   ============================================================ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}
.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.feature-icon svg { width: 28px; height: 28px; fill: #fff; }
.feature-card h3 { font-size: 18px; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* ============================================================
   专家团队
   ============================================================ */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.team-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  text-align: center;
}
.team-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.team-photo {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.team-info { padding: 20px 16px; }
.team-info h3 { font-size: 17px; margin-bottom: 4px; }
.team-role {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 8px;
}
.team-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 14px; }
.team-awards { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; margin-bottom: 14px; }
.award-tag {
  background: rgba(200,151,58,0.12);
  color: var(--accent);
  font-size: 11px;
  padding: 2px 10px;
  border-radius: 10px;
}
.team-btns { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  padding: 7px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}
.btn-sm-primary { background: var(--primary); color: #fff; }
.btn-sm-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-sm-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-sm-outline:hover { background: var(--primary); color: #fff; }

/* ============================================================
   评价区
   ============================================================ */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.review-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
  transition: var(--transition);
}
.review-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.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-author { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  flex-shrink: 0;
}
.review-name { font-size: 14px; font-weight: 600; }
.review-date { font-size: 12px; color: var(--text-muted); }

/* ============================================================
   FAQ
   ============================================================ */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--card-bg);
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
}
.faq-question {
  padding: 18px 24px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-question.active { color: var(--primary); }
.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-question.active .faq-icon { transform: rotate(45deg); }
.faq-answer {
  display: none;
  padding: 0 24px 18px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.faq-answer.open { display: block; }

/* ============================================================
   合作品牌
   ============================================================ */
.partner-logos {
  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);
  padding: 16px 28px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-muted);
  transition: var(--transition);
  min-width: 120px;
  text-align: center;
}
.partner-item:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }

/* ============================================================
   联系区域
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contact-info-list { display: flex; flex-direction: column; gap: 16px; }
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 16px 20px;
}
.contact-icon {
  width: 42px;
  height: 42px;
  background: var(--primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-icon svg { width: 20px; height: 20px; fill: #fff; }
.contact-label { font-size: 12px; color: rgba(255,255,255,0.55); margin-bottom: 3px; }
.contact-value { font-size: 15px; color: #fff; font-weight: 500; }
.qr-group { display: flex; gap: 24px; }
.qr-item { text-align: center; }
.qr-item img { width: 120px; height: 120px; border-radius: 10px; 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; }

/* ============================================================
   社区入口
   ============================================================ */
.community-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.community-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
  cursor: pointer;
}
.community-card:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--accent);
  transform: translateY(-4px);
}
.community-icon {
  font-size: 36px;
  margin-bottom: 12px;
}
.community-card h4 { font-size: 16px; color: #fff; margin-bottom: 6px; }
.community-card p { font-size: 13px; color: rgba(255,255,255,0.6); }
.community-count { font-size: 20px; font-weight: 800; color: var(--accent-light); margin-top: 10px; }

/* ============================================================
   分享按钮
   ============================================================ */
.share-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.share-label { font-size: 14px; color: var(--text-muted); font-weight: 600; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  color: #fff;
}
.share-wechat { background: #07c160; }
.share-weibo { background: #e6162d; }
.share-douyin { background: #010101; }
.share-bilibili { background: #00a1d6; }
.share-btn:hover { opacity: 0.85; transform: translateY(-2px); color: #fff; }

/* ============================================================
   AI赋能区块
   ============================================================ */
.ai-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.ai-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: var(--transition);
}
.ai-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--accent);
  transform: translateY(-4px);
}
.ai-card-icon {
  font-size: 32px;
  margin-bottom: 14px;
}
.ai-card h3 { font-size: 17px; color: #fff; margin-bottom: 10px; }
.ai-card p { font-size: 14px; color: rgba(255,255,255,0.65); line-height: 1.7; }
.ai-tag {
  display: inline-block;
  background: rgba(200,151,58,0.2);
  color: var(--accent-light);
  font-size: 11px;
  padding: 3px 12px;
  border-radius: 12px;
  margin-top: 12px;
}

/* ============================================================
   How-To 加入指南
   ============================================================ */
.howto-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.howto-steps::before {
  content: '';
  position: absolute;
  top: 28px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 0;
}
.step-card {
  text-align: center;
  position: relative;
  z-index: 1;
}
.step-num {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin: 0 auto 16px;
  box-shadow: 0 4px 16px rgba(13,107,94,0.3);
}
.step-card h4 { font-size: 15px; font-weight: 700; margin-bottom: 8px; }
.step-card p { font-size: 13px; color: var(--text-muted); }

/* ============================================================
   页脚
   ============================================================ */
.site-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: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand .footer-logo img { width: 40px; height: 40px; border-radius: 50%; }
.footer-brand .footer-logo span { font-size: 22px; font-weight: 800; color: #fff; letter-spacing: 2px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.6); margin-bottom: 20px; }
.footer-social { display: flex; gap: 10px; }
.social-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.12);
}
.social-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.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(255,255,255,0.6); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent-light); padding-left: 4px; }
.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}
.footer-bottom a { color: rgba(255,255,255,0.55); }
.footer-bottom a:hover { color: var(--accent-light); }
.update-time { color: rgba(255,255,255,0.4); font-size: 12px; }

/* ============================================================
   内页样式
   ============================================================ */
.page-hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--bg-dark) 100%);
  padding: 60px 0;
  color: #fff;
}
.page-hero h1 { font-size: clamp(24px, 3vw, 42px); color: #fff; margin-bottom: 12px; }
.page-hero p { font-size: 16px; color: rgba(255,255,255,0.75); max-width: 600px; }

/* 文章内容 */
.article-content { max-width: 860px; }
.article-content h2 { font-size: 24px; margin: 32px 0 14px; color: var(--primary-dark); }
.article-content h3 { font-size: 19px; margin: 24px 0 10px; color: var(--text-main); }
.article-content p { font-size: 15px; color: var(--text-muted); line-height: 1.9; margin-bottom: 16px; }
.article-content img { border-radius: var(--radius); margin: 20px 0; }

/* 侧边栏 */
.sidebar { position: sticky; top: 80px; }
.sidebar-widget {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.sidebar-widget h4 { font-size: 16px; font-weight: 700; margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--primary); color: var(--primary); }
.sidebar-video-item { display: flex; gap: 12px; margin-bottom: 14px; }
.sidebar-video-item img { width: 80px; height: 54px; object-fit: cover; border-radius: 6px; flex-shrink: 0; }
.sidebar-video-info h5 { font-size: 13px; font-weight: 600; margin-bottom: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sidebar-video-info span { font-size: 11px; color: var(--text-muted); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1100px) {
  .video-grid-4 { grid-template-columns: repeat(3, 1fr); }
  .team-grid { grid-template-columns: repeat(3, 1fr); }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .ai-features { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .howto-steps { grid-template-columns: repeat(2, 1fr); }
  .howto-steps::before { display: none; }
  .community-cards { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { position: static; margin-top: 32px; border-radius: 12px; overflow: hidden; }
}
@media (max-width: 768px) {
  .main-nav { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: #fff; padding: 16px; box-shadow: 0 8px 24px rgba(0,0,0,0.1); z-index: 999; }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 16px; border-radius: 8px; }
  .menu-toggle { display: flex; }
  .header-search { display: none; }
  .video-grid-4, .video-grid-3 { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-banner { min-height: 420px; }
  .hero-content h1 { font-size: 26px; }
  .section { padding: 48px 0; }
}
@media (max-width: 480px) {
  .video-grid-4, .video-grid-3, .video-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: 1fr 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .ai-features { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .howto-steps { grid-template-columns: 1fr; }
  .community-cards { grid-template-columns: 1fr 1fr; }
  .hero-btns { flex-direction: column; }
}

/* ============================================================
   动画
   ============================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
.fade-in-up { animation: fadeInUp 0.6s ease both; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

/* 懒加载占位 */
img[data-src] { background: linear-gradient(90deg, #e8f0ee 25%, #d0e8e0 50%, #e8f0ee 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; }
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }

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

/* ============================================================
   视频卡片增强样式（视频标签、徽章）
   ============================================================ */
.video-label-tag {
  position: absolute;
  bottom: 36px;
  left: 8px;
  background: rgba(13,107,94,0.85);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  letter-spacing: 1px;
  z-index: 2;
}
.video-badge-hot { background: linear-gradient(135deg, #e84040, #c0392b); }
.video-badge-new { background: linear-gradient(135deg, #2980b9, #1a5276); }
.video-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
  justify-content: center;
}
.video-core-section { background: #fff; }

/* ============================================================
   娱乐专区样式
   ============================================================ */
.section-entertainment { background: var(--bg-light); }
.entertainment-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.ent-block {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.ent-block:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.ent-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--border);
}
.ent-block-header h3 {
  font-size: 18px;
  color: var(--primary-dark);
  font-weight: 700;
}
.ent-tag {
  font-size: 11px;
  background: var(--primary);
  color: #fff;
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 600;
}
.ent-video-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}
.ent-video-item p {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
  text-align: center;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-thumb-vertical { aspect-ratio: 9/16; }
.ent-featured-video { margin-bottom: 16px; }
.ent-featured-video h4 {
  font-size: 15px;
  font-weight: 700;
  margin: 10px 0 6px;
  color: var(--text-main);
}
.ent-featured-video p { font-size: 13px; color: var(--text-muted); margin-bottom: 10px; }
.ent-more-link {
  display: inline-block;
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  margin-top: 8px;
  transition: var(--transition);
}
.ent-more-link:hover { color: var(--accent); }
.dream-video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 14px;
}
.dream-video-item h5 {
  font-size: 13px;
  font-weight: 700;
  margin: 8px 0 4px;
  color: var(--text-main);
}
.dream-video-item p { font-size: 12px; color: var(--text-muted); }
.showcase-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 14px;
}
.showcase-item { display: flex; flex-direction: column; gap: 6px; }
.showcase-info { display: flex; align-items: center; justify-content: space-between; }
.showcase-info h5 { font-size: 12px; font-weight: 600; color: var(--text-main); }
.showcase-views { font-size: 11px; color: var(--text-muted); }

/* ============================================================
   动物解说与情感话题样式
   ============================================================ */
.story-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.story-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.story-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); }
.story-info { padding: 16px; }
.story-type {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 8px;
}
.story-type-narration { background: rgba(13,107,94,0.12); color: var(--primary); }
.story-type-emotion { background: rgba(200,151,58,0.15); color: var(--accent); }
.story-info h5 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.story-info p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ============================================================
   亲密教育科普样式
   ============================================================ */
.science-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.science-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 24px 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
  text-align: center;
}
.science-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.science-icon { font-size: 36px; margin-bottom: 14px; }
.science-card h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 10px;
}
.science-card p { font-size: 13px; color: var(--text-muted); line-height: 1.7; margin-bottom: 14px; }
.science-tags { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 14px; }
.science-tags span {
  font-size: 11px;
  background: var(--bg-light);
  color: var(--primary);
  padding: 3px 8px;
  border-radius: 4px;
  border: 1px solid var(--border);
}
.science-link {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  transition: var(--transition);
}
.science-link:hover { color: var(--accent); }

/* ============================================================
   社区卡片增强
   ============================================================ */
.community-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  border: 1px solid var(--primary);
  padding: 4px 12px;
  border-radius: 20px;
  transition: var(--transition);
}
.community-link:hover { background: var(--primary); color: #fff; }

/* ============================================================
   响应式补充
   ============================================================ */
@media (max-width: 1100px) {
  .entertainment-grid { grid-template-columns: 1fr; }
  .science-grid { grid-template-columns: repeat(2, 1fr); }
  .story-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .ent-video-list { grid-template-columns: repeat(2, 1fr); }
  .dream-video-grid { grid-template-columns: 1fr 1fr; }
  .showcase-list { grid-template-columns: 1fr; }
  .story-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .science-grid { grid-template-columns: 1fr; }
  .ent-video-list { grid-template-columns: repeat(2, 1fr); }
  .dream-video-grid { grid-template-columns: 1fr; }
}