/* ============================================
   糖心vlog - 游戏解说视频社区 全站样式
   官网：wze0dc.cn
   配色：深蓝黑底 + 电竞蓝 + 金色点缀
   ============================================ */

/* === 基础重置与变量 === */
:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: #1a2236;
  --bg-card-hover: #1f2b42;
  --accent-blue: #3b82f6;
  --accent-cyan: #06b6d4;
  --accent-gold: #f59e0b;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: #1e293b;
  --gradient-blue: linear-gradient(135deg, #3b82f6, #06b6d4);
  --gradient-gold: linear-gradient(135deg, #f59e0b, #f97316);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 20px rgba(59,130,246,0.3);
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 1280px;
  --transition: all 0.3s ease;
}
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; font-size:16px; }
body {
  font-family: 'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-blue); text-decoration:none; transition: var(--transition); }
a:hover { color: var(--accent-cyan); }
img { max-width:100%; height:auto; display:block; }
ul,ol { list-style:none; }
.container { max-width: var(--max-width); margin:0 auto; padding:0 20px; }

/* === 头部导航 === */
.site-header {
  position:fixed; top:0; left:0; right:0; z-index:1000;
  background: rgba(10,14,26,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}
.site-header.scrolled { background: rgba(10,14,26,0.98); box-shadow: 0 2px 20px rgba(0,0,0,0.5); }
.header-inner {
  max-width: var(--max-width); margin:0 auto; padding:0 20px;
  display:flex; align-items:center; justify-content:space-between; height:68px;
}
.site-logo { display:flex; align-items:center; gap:10px; }
.site-logo img { width:38px; height:38px; border-radius:8px; }
.site-logo span { font-size:1.25rem; font-weight:700; color:var(--text-primary); }
.site-logo .logo-dot { color: var(--accent-gold); }

.main-nav { display:flex; align-items:center; gap:6px; }
.main-nav a {
  padding:8px 14px; border-radius: var(--radius-sm);
  font-size:0.9rem; color: var(--text-secondary); font-weight:500;
  transition: var(--transition);
}
.main-nav a:hover, .main-nav a.active {
  color: var(--accent-blue); background: rgba(59,130,246,0.1);
}
.nav-toggle { display:none; background:none; border:none; color:var(--text-primary); font-size:1.5rem; cursor:pointer; }

/* === 搜索框 === */
.search-bar {
  background: var(--bg-secondary); border-bottom:1px solid var(--border-color);
  padding:12px 0; margin-top:68px;
}
.search-bar .container { display:flex; justify-content:center; }
.search-form {
  display:flex; max-width:600px; width:100%;
  background: var(--bg-card); border-radius:50px; overflow:hidden;
  border:1px solid var(--border-color);
}
.search-form input {
  flex:1; padding:10px 20px; background:transparent; border:none;
  color:var(--text-primary); font-size:0.95rem; outline:none;
}
.search-form input::placeholder { color: var(--text-muted); }
.search-form button {
  padding:10px 24px; background: var(--gradient-blue); border:none;
  color:#fff; font-size:0.9rem; cursor:pointer; font-weight:600;
  transition: var(--transition);
}
.search-form button:hover { opacity:0.9; }

/* === Hero Banner === */
.hero-section {
  position:relative; overflow:hidden;
  min-height:520px; display:flex; align-items:center;
}
.hero-bg {
  position:absolute; inset:0; z-index:0;
  background-size:cover; background-position:center;
}
.hero-bg::after {
  content:''; position:absolute; inset:0;
  background: linear-gradient(135deg, rgba(10,14,26,0.85), rgba(17,24,39,0.7));
}
.hero-content {
  position:relative; z-index:1; max-width:700px;
  padding:80px 40px;
}
.hero-content h1 {
  font-size:2.8rem; font-weight:800; line-height:1.3;
  margin-bottom:16px;
  background: linear-gradient(135deg, #fff, #94a3b8);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
}
.hero-content h1 .hl { 
  background: var(--gradient-blue);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
}
.hero-content p { font-size:1.1rem; color:var(--text-secondary); margin-bottom:28px; line-height:1.8; }
.hero-btns { display:flex; gap:14px; flex-wrap:wrap; }
.btn-primary {
  display:inline-flex; align-items:center; gap:8px;
  padding:12px 28px; background:var(--gradient-blue); color:#fff;
  border-radius:50px; font-weight:600; font-size:0.95rem;
  border:none; cursor:pointer; transition:var(--transition);
  box-shadow: 0 4px 15px rgba(59,130,246,0.4);
}
.btn-primary:hover { transform:translateY(-2px); box-shadow: 0 6px 20px rgba(59,130,246,0.5); color:#fff; }
.btn-outline {
  display:inline-flex; align-items:center; gap:8px;
  padding:12px 28px; background:transparent; color:var(--accent-blue);
  border:2px solid var(--accent-blue); border-radius:50px;
  font-weight:600; font-size:0.95rem; cursor:pointer; transition:var(--transition);
}
.btn-outline:hover { background:var(--accent-blue); color:#fff; }

/* === 通用模块标题 === */
.section-title {
  text-align:center; margin-bottom:48px;
}
.section-title h2 {
  font-size:2rem; font-weight:700; margin-bottom:12px;
  color: var(--text-primary);
}
.section-title h2 .hl { color: var(--accent-blue); }
.section-title p { color: var(--text-secondary); font-size:1rem; max-width:600px; margin:0 auto; }
.section-tag {
  display:inline-block; padding:4px 14px; border-radius:20px;
  background: rgba(59,130,246,0.15); color:var(--accent-blue);
  font-size:0.8rem; font-weight:600; margin-bottom:12px; letter-spacing:1px;
}

/* === 视频卡片网格 === */
.video-grid {
  display:grid; grid-template-columns:repeat(auto-fill, minmax(280px, 1fr));
  gap:24px;
}
.video-card {
  background: var(--bg-card); border-radius:var(--radius);
  overflow:hidden; transition:var(--transition);
  border:1px solid var(--border-color);
}
.video-card:hover {
  transform:translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: var(--accent-blue);
}
.video-card .thumb {
  position:relative; padding-top:56.25%; overflow:hidden;
}
.video-card .thumb img {
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
  transition: transform 0.5s ease;
}
.video-card:hover .thumb img { transform:scale(1.08); }
.video-card .play-btn {
  position:absolute; top:50%; left:50%; transform:translate(-50%,-50%) scale(0);
  width:56px; height:56px; border-radius:50%;
  background: rgba(59,130,246,0.9); display:flex; align-items:center; justify-content:center;
  transition: var(--transition); z-index:2;
}
.video-card .play-btn::after {
  content:''; width:0; height:0;
  border-left:18px solid #fff; border-top:11px solid transparent; border-bottom:11px solid transparent;
  margin-left:4px;
}
.video-card:hover .play-btn { transform:translate(-50%,-50%) scale(1); }
.video-card .duration {
  position:absolute; bottom:8px; right:8px;
  background:rgba(0,0,0,0.8); color:#fff; padding:2px 8px;
  border-radius:4px; font-size:0.75rem; font-weight:600; z-index:2;
}
.video-card .card-body { padding:16px; }
.video-card .card-body h3 {
  font-size:0.95rem; font-weight:600; margin-bottom:8px;
  line-height:1.5; color:var(--text-primary);
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden;
}
.video-card .card-meta {
  display:flex; align-items:center; justify-content:space-between;
  font-size:0.8rem; color:var(--text-muted);
}
.video-card .card-meta .views { display:flex; align-items:center; gap:4px; }
.video-card .card-tags { display:flex; gap:6px; margin-top:8px; flex-wrap:wrap; }
.video-card .card-tags span {
  padding:2px 8px; background:rgba(59,130,246,0.1); color:var(--accent-blue);
  border-radius:4px; font-size:0.72rem;
}

/* === 分类标签 === */
.category-tabs {
  display:flex; gap:10px; margin-bottom:32px; flex-wrap:wrap;
  justify-content:center;
}
.category-tabs .tab {
  padding:8px 20px; border-radius:50px; font-size:0.88rem;
  background:var(--bg-card); color:var(--text-secondary);
  border:1px solid var(--border-color); cursor:pointer;
  transition:var(--transition); font-weight:500;
}
.category-tabs .tab:hover, .category-tabs .tab.active {
  background:var(--accent-blue); color:#fff; border-color:var(--accent-blue);
}

/* === 各内容区块 === */
.section-block {
  padding:80px 0;
}
.section-block:nth-child(even) { background: var(--bg-secondary); }

/* === 游戏传媒模块 === */
.media-features {
  display:grid; grid-template-columns:repeat(3, 1fr); gap:24px;
}
.media-feature-card {
  background:var(--bg-card); border-radius:var(--radius); padding:32px;
  text-align:center; border:1px solid var(--border-color);
  transition:var(--transition);
}
.media-feature-card:hover {
  border-color:var(--accent-blue); transform:translateY(-4px);
  box-shadow:var(--shadow-glow);
}
.media-feature-card .icon {
  width:60px; height:60px; border-radius:16px; margin:0 auto 16px;
  display:flex; align-items:center; justify-content:center;
  font-size:1.8rem;
}
.media-feature-card .icon.blue { background:rgba(59,130,246,0.15); }
.media-feature-card .icon.gold { background:rgba(245,158,11,0.15); }
.media-feature-card .icon.green { background:rgba(16,185,129,0.15); }
.media-feature-card .icon.cyan { background:rgba(6,182,212,0.15); }
.media-feature-card .icon.red { background:rgba(239,68,68,0.15); }
.media-feature-card .icon.purple { background:rgba(139,92,246,0.15); }
.media-feature-card h3 { font-size:1.1rem; font-weight:600; margin-bottom:8px; }
.media-feature-card p { font-size:0.88rem; color:var(--text-secondary); line-height:1.6; }

/* === TikTok横向滚动 === */
.tiktok-scroll-wrap { overflow-x:auto; padding-bottom:16px; }
.tiktok-scroll-wrap::-webkit-scrollbar { height:6px; }
.tiktok-scroll-wrap::-webkit-scrollbar-track { background:var(--bg-secondary); border-radius:3px; }
.tiktok-scroll-wrap::-webkit-scrollbar-thumb { background:var(--accent-blue); border-radius:3px; }
.tiktok-row { display:flex; gap:16px; min-width:max-content; }
.tiktok-card {
  width:200px; flex-shrink:0; border-radius:var(--radius);
  overflow:hidden; background:var(--bg-card); border:1px solid var(--border-color);
  transition:var(--transition);
}
.tiktok-card:hover { border-color:var(--accent-blue); transform:translateY(-3px); }
.tiktok-card .tiktok-thumb {
  position:relative; padding-top:150%; overflow:hidden;
}
.tiktok-card .tiktok-thumb img {
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
}
.tiktok-card .tiktok-thumb .play-btn {
  position:absolute; top:50%; left:50%; transform:translate(-50%,-50%) scale(0);
  width:44px; height:44px; border-radius:50%;
  background:rgba(59,130,246,0.9); display:flex; align-items:center; justify-content:center;
  transition:var(--transition);
}
.tiktok-card .tiktok-thumb .play-btn::after {
  content:''; width:0; height:0;
  border-left:14px solid #fff; border-top:8px solid transparent; border-bottom:8px solid transparent;
  margin-left:3px;
}
.tiktok-card:hover .play-btn { transform:translate(-50%,-50%) scale(1); }
.tiktok-card .tiktok-info { padding:10px; }
.tiktok-card .tiktok-info h4 { font-size:0.82rem; font-weight:600; line-height:1.4;
  display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; }
.tiktok-card .tiktok-info .meta { font-size:0.72rem; color:var(--text-muted); margin-top:4px; }

/* === AI赋能模块 === */
.ai-features {
  display:grid; grid-template-columns:repeat(3, 1fr); gap:24px;
}
.ai-card {
  background:var(--bg-card); border-radius:var(--radius); padding:28px;
  border:1px solid var(--border-color); transition:var(--transition);
  position:relative; overflow:hidden;
}
.ai-card::before {
  content:''; position:absolute; top:0; left:0; right:0; height:3px;
  background:var(--gradient-blue);
}
.ai-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-glow); }
.ai-card h3 { font-size:1.05rem; font-weight:600; margin-bottom:10px; color:var(--accent-cyan); }
.ai-card p { font-size:0.88rem; color:var(--text-secondary); line-height:1.7; }

/* === 社区动物视频 === */
.community-animals {
  display:grid; grid-template-columns:repeat(4, 1fr); gap:20px;
}
.animal-card {
  background:var(--bg-card); border-radius:var(--radius); overflow:hidden;
  border:1px solid var(--border-color); transition:var(--transition);
}
.animal-card:hover { border-color:var(--accent-gold); transform:translateY(-3px); }
.animal-card .thumb { position:relative; padding-top:56.25%; overflow:hidden; }
.animal-card .thumb img {
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
  transition:transform 0.5s ease;
}
.animal-card:hover .thumb img { transform:scale(1.05); }
.animal-card .thumb .play-btn {
  position:absolute; top:50%; left:50%; transform:translate(-50%,-50%) scale(0);
  width:48px; height:48px; border-radius:50%;
  background:rgba(245,158,11,0.9); display:flex; align-items:center; justify-content:center;
  transition:var(--transition);
}
.animal-card .thumb .play-btn::after {
  content:''; width:0; height:0;
  border-left:16px solid #fff; border-top:9px solid transparent; border-bottom:9px solid transparent;
  margin-left:3px;
}
.animal-card:hover .play-btn { transform:translate(-50%,-50%) scale(1); }
.animal-card .info { padding:14px; }
.animal-card .info h4 { font-size:0.9rem; font-weight:600; margin-bottom:4px; }
.animal-card .info p { font-size:0.78rem; color:var(--text-muted); }

/* === 专家展示 === */
.experts-grid {
  display:grid; grid-template-columns:repeat(4, 1fr); gap:24px;
}
.expert-card {
  background:var(--bg-card); border-radius:var(--radius); padding:28px;
  text-align:center; border:1px solid var(--border-color);
  transition:var(--transition);
}
.expert-card:hover { border-color:var(--accent-gold); transform:translateY(-4px); }
.expert-card .avatar {
  width:90px; height:90px; border-radius:50%; margin:0 auto 14px;
  overflow:hidden; border:3px solid var(--accent-blue);
}
.expert-card .avatar img { width:100%; height:100%; object-fit:cover; }
.expert-card h3 { font-size:1rem; font-weight:600; margin-bottom:4px; }
.expert-card .role { font-size:0.82rem; color:var(--accent-gold); margin-bottom:10px; }
.expert-card p { font-size:0.82rem; color:var(--text-secondary); line-height:1.6; margin-bottom:12px; }
.expert-card .expert-btns { display:flex; gap:8px; justify-content:center; }
.expert-card .expert-btns a {
  padding:6px 14px; border-radius:20px; font-size:0.78rem; font-weight:500;
}
.expert-card .expert-btns .btn-sm-primary {
  background:var(--accent-blue); color:#fff;
}
.expert-card .expert-btns .btn-sm-outline {
  border:1px solid var(--accent-blue); color:var(--accent-blue);
}

/* === FAQ 手风琴 === */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item {
  background:var(--bg-card); border-radius:var(--radius-sm); margin-bottom:12px;
  border:1px solid var(--border-color); overflow:hidden;
}
.faq-item .faq-q {
  padding:18px 24px; cursor:pointer; display:flex; justify-content:space-between;
  align-items:center; font-weight:600; font-size:0.95rem;
  transition:var(--transition);
}
.faq-item .faq-q:hover { color:var(--accent-blue); }
.faq-item .faq-q .arrow { transition:transform 0.3s; font-size:1.2rem; color:var(--text-muted); }
.faq-item.open .faq-q .arrow { transform:rotate(180deg); }
.faq-item .faq-a {
  max-height:0; overflow:hidden; transition:max-height 0.4s ease;
  padding:0 24px;
}
.faq-item.open .faq-a { max-height:300px; padding:0 24px 18px; }
.faq-item .faq-a p { font-size:0.9rem; color:var(--text-secondary); line-height:1.7; }

/* === 用户评价 === */
.reviews-grid {
  display:grid; grid-template-columns:repeat(2, 1fr); gap:24px;
}
.review-card {
  background:var(--bg-card); border-radius:var(--radius); padding:24px;
  border:1px solid var(--border-color);
}
.review-card .stars { color:var(--accent-gold); font-size:0.9rem; margin-bottom:10px; }
.review-card .review-text {
  font-size:0.9rem; color:var(--text-secondary); line-height:1.7;
  margin-bottom:14px; font-style:italic;
}
.review-card .reviewer { display:flex; align-items:center; gap:10px; }
.review-card .reviewer .r-avatar {
  width:36px; height:36px; border-radius:50%; background:var(--gradient-blue);
  display:flex; align-items:center; justify-content:center;
  font-size:0.85rem; font-weight:700; color:#fff;
}
.review-card .reviewer .r-info .name { font-size:0.85rem; font-weight:600; }
.review-card .reviewer .r-info .date { font-size:0.75rem; color:var(--text-muted); }

/* === HowTo指南 === */
.howto-steps {
  max-width:700px; margin:0 auto;
}
.howto-step {
  display:flex; gap:20px; margin-bottom:28px; align-items:flex-start;
}
.howto-step .step-num {
  width:44px; height:44px; border-radius:50%; flex-shrink:0;
  background:var(--gradient-blue); display:flex; align-items:center; justify-content:center;
  font-size:1.1rem; font-weight:700; color:#fff;
}
.howto-step .step-content h3 { font-size:1rem; font-weight:600; margin-bottom:4px; }
.howto-step .step-content p { font-size:0.88rem; color:var(--text-secondary); line-height:1.6; }

/* === 合作品牌墙 === */
.partner-wall {
  display:flex; gap:24px; justify-content:center; flex-wrap:wrap;
  align-items:center;
}
.partner-item {
  width:120px; height:60px; background:var(--bg-card); border-radius:var(--radius-sm);
  display:flex; align-items:center; justify-content:center;
  border:1px solid var(--border-color); padding:10px;
  font-size:0.85rem; font-weight:600; color:var(--text-muted);
  transition:var(--transition);
}
.partner-item:hover { border-color:var(--accent-blue); color:var(--accent-blue); }

/* === 联系我们 === */
.contact-grid {
  display:grid; grid-template-columns:repeat(2, 1fr); gap:32px;
}
.contact-info-card {
  background:var(--bg-card); border-radius:var(--radius); padding:32px;
  border:1px solid var(--border-color);
}
.contact-info-card h3 { font-size:1.15rem; font-weight:600; margin-bottom:16px; color:var(--accent-blue); }
.contact-info-card .info-row {
  display:flex; gap:12px; margin-bottom:12px; align-items:flex-start;
}
.contact-info-card .info-row .label { font-weight:600; min-width:80px; font-size:0.9rem; }
.contact-info-card .info-row .value { color:var(--text-secondary); font-size:0.9rem; }
.contact-qr { display:flex; gap:24px; margin-top:20px; }
.contact-qr .qr-item { text-align:center; }
.contact-qr .qr-item img { width:120px; height:120px; border-radius:8px; margin-bottom:6px; }
.contact-qr .qr-item span { font-size:0.78rem; color:var(--text-muted); }

/* === 社交分享 === */
.share-btns { display:flex; gap:12px; justify-content:center; flex-wrap:wrap; }
.share-btn {
  padding:10px 20px; border-radius:50px; font-size:0.85rem; font-weight:600;
  display:inline-flex; align-items:center; gap:6px; color:#fff;
  transition:var(--transition);
}
.share-btn:hover { transform:translateY(-2px); color:#fff; }
.share-btn.wechat { background:#07c160; }
.share-btn.weibo { background:#e6162d; }
.share-btn.douyin { background:#161823; border:1px solid #333; }
.share-btn.bilibili { background:#fb7299; }

/* === 面包屑 === */
.breadcrumb {
  padding:16px 0; font-size:0.85rem;
}
.breadcrumb a { color:var(--text-muted); }
.breadcrumb a:hover { color:var(--accent-blue); }
.breadcrumb span { color:var(--text-muted); margin:0 6px; }
.breadcrumb .current { color:var(--text-secondary); }

/* === 页脚 === */
.site-footer {
  background:var(--bg-secondary); border-top:1px solid var(--border-color);
  padding:60px 0 0;
}
.footer-grid {
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px;
  margin-bottom:40px;
}
.footer-brand .footer-logo { display:flex; align-items:center; gap:10px; margin-bottom:14px; }
.footer-brand .footer-logo img { width:36px; height:36px; border-radius:8px; }
.footer-brand .footer-logo span { font-size:1.15rem; font-weight:700; color:var(--text-primary); }
.footer-brand p { font-size:0.85rem; color:var(--text-secondary); line-height:1.7; margin-bottom:16px; }
.footer-col h4 {
  font-size:0.95rem; font-weight:600; margin-bottom:16px;
  color:var(--text-primary); position:relative; padding-bottom:8px;
}
.footer-col h4::after {
  content:''; position:absolute; bottom:0; left:0; width:30px; height:2px;
  background:var(--accent-blue);
}
.footer-col ul li { margin-bottom:8px; }
.footer-col ul li a { font-size:0.85rem; color:var(--text-muted); }
.footer-col ul li a:hover { color:var(--accent-blue); }
.footer-bottom {
  border-top:1px solid var(--border-color); padding:20px 0;
  text-align:center; font-size:0.82rem; color:var(--text-muted);
}
.footer-bottom a { color:var(--text-muted); }
.footer-bottom a:hover { color:var(--accent-blue); }

/* === 视频模态框 === */
.video-modal {
  display:none; position:fixed; inset:0; z-index:9999;
  background:rgba(0,0,0,0.9); align-items:center; justify-content:center;
}
.video-modal.active { display:flex; }
.video-modal .modal-inner {
  width:90%; max-width:900px; position:relative;
}
.video-modal .modal-close {
  position:absolute; top:-40px; right:0; background:none; border:none;
  color:#fff; font-size:2rem; cursor:pointer;
}
.video-modal .video-player-wrap {
  position:relative; padding-top:56.25%; background:#000; border-radius:var(--radius);
  overflow:hidden;
}
.video-modal video {
  position:absolute; inset:0; width:100%; height:100%; object-fit:cover;
}
.video-modal .danmaku-layer {
  position:absolute; inset:0; pointer-events:none; overflow:hidden;
}
.video-modal .danmaku-layer .dm {
  position:absolute; white-space:nowrap; font-size:0.85rem;
  color:#fff; text-shadow:1px 1px 2px rgba(0,0,0,0.7);
  animation:dmScroll 8s linear forwards;
}
@keyframes dmScroll {
  from { transform:translateX(100vw); }
  to { transform:translateX(-100%); }
}

/* === 回到顶部 === */
.back-to-top {
  position:fixed; bottom:30px; right:30px; width:44px; height:44px;
  border-radius:50%; background:var(--gradient-blue); color:#fff;
  display:none; align-items:center; justify-content:center;
  font-size:1.2rem; cursor:pointer; z-index:999;
  box-shadow:0 4px 15px rgba(59,130,246,0.4);
  transition:var(--transition); border:none;
}
.back-to-top.visible { display:flex; }
.back-to-top:hover { transform:translateY(-3px); }

/* === 内页通用 === */
.page-header {
  padding:100px 0 40px; text-align:center;
  background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
}
.page-header h1 { font-size:2.2rem; font-weight:700; margin-bottom:10px; }
.page-header p { color:var(--text-secondary); font-size:1rem; }
.page-content { padding:60px 0; }

/* === 响应式 === */
@media (max-width:1024px) {
  .media-features, .ai-features { grid-template-columns:repeat(2, 1fr); }
  .community-animals, .experts-grid { grid-template-columns:repeat(2, 1fr); }
  .footer-grid { grid-template-columns:repeat(2, 1fr); }
  .contact-grid { grid-template-columns:1fr; }
}
@media (max-width:768px) {
  .main-nav { display:none; position:fixed; top:68px; left:0; right:0;
    background:var(--bg-primary); flex-direction:column; padding:20px;
    border-bottom:1px solid var(--border-color);
  }
  .main-nav.open { display:flex; }
  .nav-toggle { display:block; }
  .hero-content { padding:60px 20px; }
  .hero-content h1 { font-size:1.8rem; }
  .media-features, .ai-features { grid-template-columns:1fr; }
  .community-animals { grid-template-columns:repeat(2, 1fr); }
  .experts-grid { grid-template-columns:1fr; }
  .reviews-grid { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; }
  .video-grid { grid-template-columns:repeat(auto-fill, minmax(240px, 1fr)); }
}
@media (max-width:480px) {
  .hero-content h1 { font-size:1.5rem; }
  .hero-btns { flex-direction:column; }
  .community-animals { grid-template-columns:1fr; }
  .video-grid { grid-template-columns:1fr; }
  .section-block { padding:50px 0; }
}