/* ============================================
   抖阴 - 动物写真与视频社区 主样式表
   品牌色: #1a3a5c (深蓝) #c8a45a (金色) #0d1b2e (深底)
   ============================================ */

/* === 基础重置 === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#e0e0e0;background:#0d1b2e;line-height:1.8;overflow-x:hidden}
a{color:#c8a45a;text-decoration:none;transition:color .3s}
a:hover{color:#e8c97a}
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:#fff}

/* === 容器 === */
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section-wrap{padding:60px 0}

/* === 头部导航 === */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(13,27,46,.95);backdrop-filter:blur(10px);border-bottom:1px solid rgba(200,164,90,.2);transition:all .3s}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:70px}
.site-logo{display:flex;align-items:center;gap:10px}
.site-logo img{height:45px;width:auto}
.site-logo span{font-size:22px;font-weight:800;color:#c8a45a;letter-spacing:2px}
.main-nav{display:flex;align-items:center;gap:5px}
.main-nav a{padding:8px 14px;font-size:14px;color:#ccc;border-radius:6px;transition:all .3s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:#c8a45a;background:rgba(200,164,90,.1)}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:5px}
.nav-toggle span{width:25px;height:2px;background:#c8a45a;transition:all .3s}

/* === 搜索框 === */
.search-bar{background:rgba(26,58,92,.6);padding:12px 0;border-bottom:1px solid rgba(200,164,90,.1)}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%}
.search-box input{flex:1;padding:10px 18px;background:rgba(255,255,255,.08);border:1px solid rgba(200,164,90,.3);border-right:none;border-radius:25px 0 0 25px;color:#fff;font-size:14px;outline:none;transition:border-color .3s}
.search-box input:focus{border-color:#c8a45a}
.search-box input::placeholder{color:#888}
.search-box button{padding:10px 24px;background:linear-gradient(135deg,#c8a45a,#a07830);border:none;border-radius:0 25px 25px 0;color:#fff;font-size:14px;cursor:pointer;transition:all .3s;white-space:nowrap}
.search-box button:hover{background:linear-gradient(135deg,#e8c97a,#c8a45a)}

/* === Banner === */
.hero-banner{position:relative;min-height:85vh;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-top:70px}
.hero-banner .bg-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.5)}
.hero-banner .overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,27,46,.3) 0%,rgba(13,27,46,.8) 100%)}
.hero-content{position:relative;z-index:2;text-align:center;max-width:800px;padding:40px 20px}
.hero-content h1{font-size:48px;margin-bottom:16px;text-shadow:0 4px 20px rgba(0,0,0,.5)}
.hero-content h1 .brand{color:#c8a45a}
.hero-content p{font-size:18px;color:#bbb;margin-bottom:30px;line-height:1.8}
.hero-content .hero-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:30px}
.hero-content .hero-tags span{padding:6px 16px;background:rgba(200,164,90,.15);border:1px solid rgba(200,164,90,.3);border-radius:20px;font-size:13px;color:#c8a45a}
.btn-primary{display:inline-block;padding:14px 36px;background:linear-gradient(135deg,#c8a45a,#a07830);color:#fff;font-size:16px;font-weight:600;border-radius:30px;border:none;cursor:pointer;transition:all .3s;text-transform:uppercase;letter-spacing:1px}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(200,164,90,.4);color:#fff}

/* === 区块标题 === */
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:36px;margin-bottom:12px}
.section-title h2 .hl{color:#c8a45a}
.section-title p{color:#999;font-size:16px;max-width:600px;margin:0 auto}

/* === 视频卡片 === */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.video-card{position:relative;border-radius:12px;overflow:hidden;background:#132238;transition:transform .3s,box-shadow .3s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(0,0,0,.4)}
.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 .4s}
.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:60px;height:60px;background:rgba(200,164,90,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .3s;z-index:3}
.video-card:hover .play-btn{transform:translate(-50%,-50%) scale(1)}
.video-card .play-btn::after{content:"";width:0;height:0;border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:4px}
.video-card .card-body{padding:16px}
.video-card .card-body h3{font-size:16px;margin-bottom:8px;color:#fff;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-card .card-body .meta{display:flex;gap:15px;font-size:12px;color:#888}
.video-card .card-body .meta span{display:flex;align-items:center;gap:4px}
.video-card .duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);padding:2px 8px;border-radius:4px;font-size:12px;color:#fff;z-index:2}

/* === 专家展示 === */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.expert-card{background:#132238;border-radius:12px;padding:30px 20px;text-align:center;transition:transform .3s;border:1px solid rgba(200,164,90,.1)}
.expert-card:hover{transform:translateY(-4px);border-color:rgba(200,164,90,.3)}
.expert-card .avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 16px;overflow:hidden;border:3px solid #c8a45a}
.expert-card .avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{font-size:18px;color:#c8a45a;margin-bottom:6px}
.expert-card .role{font-size:13px;color:#888;margin-bottom:12px}
.expert-card p{font-size:14px;color:#aaa;line-height:1.7;margin-bottom:16px}
.expert-card .btn-sm{display:inline-block;padding:8px 20px;border:1px solid #c8a45a;color:#c8a45a;border-radius:20px;font-size:13px;transition:all .3s}
.expert-card .btn-sm:hover{background:#c8a45a;color:#0d1b2e}

/* === FAQ === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#132238;border-radius:10px;margin-bottom:12px;border:1px solid rgba(200,164,90,.1);overflow:hidden}
.faq-item .faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:16px;font-weight:600;color:#e0e0e0;transition:color .3s}
.faq-item .faq-q:hover{color:#c8a45a}
.faq-item .faq-q::after{content:"+";font-size:22px;color:#c8a45a;transition:transform .3s}
.faq-item.active .faq-q::after{transform:rotate(45deg)}
.faq-item .faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 24px}
.faq-item.active .faq-a{max-height:300px;padding:0 24px 18px}
.faq-item .faq-a p{font-size:14px;color:#aaa;line-height:1.8}

/* === 用户评论 === */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.review-card{background:#132238;border-radius:12px;padding:24px;border:1px solid rgba(200,164,90,.1)}
.review-card .stars{color:#c8a45a;font-size:16px;margin-bottom:10px;letter-spacing:2px}
.review-card p{font-size:14px;color:#bbb;line-height:1.8;margin-bottom:14px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:10px}
.review-card .reviewer .r-avatar{width:40px;height:40px;border-radius:50%;background:#1a3a5c;display:flex;align-items:center;justify-content:center;color:#c8a45a;font-weight:700;font-size:16px}
.review-card .reviewer .r-info{font-size:13px;color:#888}
.review-card .reviewer .r-info strong{color:#ddd;display:block}

/* === 社区模块 === */
.community-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px}
.community-card{background:#132238;border-radius:12px;overflow:hidden;transition:transform .3s;border:1px solid rgba(200,164,90,.1)}
.community-card:hover{transform:translateY(-4px)}
.community-card img{width:100%;height:160px;object-fit:cover}
.community-card .cc-body{padding:16px}
.community-card .cc-body h4{font-size:16px;color:#fff;margin-bottom:8px}
.community-card .cc-body p{font-size:13px;color:#999;line-height:1.6}

/* === AI赋能 === */
.ai-features{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:24px}
.ai-card{background:linear-gradient(135deg,#132238,#1a3a5c);border-radius:12px;padding:30px;border:1px solid rgba(200,164,90,.15);transition:all .3s}
.ai-card:hover{border-color:#c8a45a;box-shadow:0 0 30px rgba(200,164,90,.1)}
.ai-card .ai-icon{width:60px;height:60px;background:rgba(200,164,90,.15);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:28px;margin-bottom:16px}
.ai-card h4{font-size:18px;color:#c8a45a;margin-bottom:10px}
.ai-card p{font-size:14px;color:#aaa;line-height:1.8}

/* === 合作品牌 === */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;padding:20px 0}
.brand-wall .brand-item{width:120px;height:80px;background:rgba(255,255,255,.05);border-radius:10px;display:flex;align-items:center;justify-content:center;border:1px solid rgba(200,164,90,.1);transition:all .3s}
.brand-wall .brand-item:hover{border-color:#c8a45a;background:rgba(200,164,90,.08)}

/* === 联系我们 === */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:30px}
.contact-card{background:#132238;border-radius:12px;padding:30px;border:1px solid rgba(200,164,90,.1)}
.contact-card h4{font-size:18px;color:#c8a45a;margin-bottom:16px;padding-bottom:10px;border-bottom:1px solid rgba(200,164,90,.15)}
.contact-card .info-row{display:flex;gap:10px;margin-bottom:12px;font-size:14px;color:#bbb}
.contact-card .info-row .label{color:#888;min-width:70px}

/* === 分享按钮 === */
.share-bar{display:flex;justify-content:center;gap:12px;padding:20px 0}
.share-btn{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;color:#fff;transition:all .3s;border:1px solid rgba(255,255,255,.2)}
.share-btn:hover{transform:scale(1.1)}
.share-btn.wechat{background:#07c160}
.share-btn.weibo{background:#e6162d}
.share-btn.douyin{background:#161823}
.share-btn.bilibili{background:#00a1d6}

/* === 页脚 === */
.site-footer{background:#091422;border-top:1px solid rgba(200,164,90,.15);padding:50px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px;margin-bottom:30px}
.footer-col h5{font-size:16px;color:#c8a45a;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:#888;padding:4px 0;transition:color .3s}
.footer-col a:hover{color:#c8a45a}
.footer-qr{display:flex;gap:20px;justify-content:center;margin:30px 0}
.footer-qr .qr-item{text-align:center}
.footer-qr .qr-item img{width:120px;height:120px;border-radius:8px;margin-bottom:8px}
.footer-qr .qr-item span{font-size:12px;color:#888}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(200,164,90,.1);font-size:13px;color:#666}
.footer-bottom .update-time{margin-top:6px;color:#555}
.footer-logo{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.footer-logo img{height:35px}
.footer-logo span{font-size:18px;font-weight:700;color:#c8a45a}

/* === 面包屑 === */
.breadcrumb{padding:15px 0;font-size:13px;color:#888}
.breadcrumb a{color:#c8a45a}
.breadcrumb span{margin:0 8px;color:#555}

/* === 内页Banner === */
.page-banner{position:relative;height:350px;display:flex;align-items:center;justify-content:center;overflow:hidden;margin-top:70px}
.page-banner .bg-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.35)}
.page-banner .overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,27,46,.2),rgba(13,27,46,.9))}
.page-banner .banner-text{position:relative;z-index:2;text-align:center}
.page-banner .banner-text h1{font-size:40px;margin-bottom:10px}
.page-banner .banner-text p{color:#aaa;font-size:16px}

/* === How-To指南 === */
.howto-steps{max-width:700px;margin:0 auto}
.howto-step{display:flex;gap:20px;margin-bottom:30px;align-items:flex-start}
.howto-step .step-num{flex-shrink:0;width:50px;height:50px;background:linear-gradient(135deg,#c8a45a,#a07830);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;color:#fff}
.howto-step .step-content h4{font-size:17px;color:#fff;margin-bottom:6px}
.howto-step .step-content p{font-size:14px;color:#aaa;line-height:1.7}

/* === 动画 === */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.fade-in{animation:fadeInUp .6s ease forwards;opacity:0}

/* === 响应式 === */
@media(max-width:768px){
  .site-header .container{height:60px}
  .site-logo img{height:35px}
  .site-logo span{font-size:18px}
  .main-nav{position:fixed;top:60px;left:0;width:100%;background:rgba(13,27,46,.98);flex-direction:column;padding:20px;gap:5px;transform:translateY(-120%);transition:transform .3s;border-bottom:1px solid rgba(200,164,90,.2)}
  .main-nav.open{transform:translateY(0)}
  .main-nav a{padding:12px 16px;font-size:15px;width:100%}
  .nav-toggle{display:flex}
  .hero-banner{min-height:70vh}
  .hero-content h1{font-size:28px}
  .hero-content p{font-size:15px}
  .section-title h2{font-size:26px}
  .section-wrap{padding:40px 0}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
  .page-banner{height:250px}
  .page-banner .banner-text h1{font-size:28px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:480px){
  .hero-content h1{font-size:24px}
  .video-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .ai-features{grid-template-columns:1fr}
}


/* === H5视频卡片 === */
.video-card .thumb video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1}
.video-card .thumb video::-webkit-media-controls{opacity:0;transition:opacity .3s}
.video-card:hover .thumb video::-webkit-media-controls{opacity:1}
.video-card .thumb .video-poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:2;transition:opacity .3s}
.video-card:hover .thumb .video-poster{opacity:0}
.video-card .play-overlay{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:64px;height:64px;background:rgba(200,164,90,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:all .3s;z-index:5;cursor:pointer}
.video-card:hover .play-overlay{transform:translate(-50%,-50%) scale(1)}
.video-card .play-overlay::after{content:"";width:0;height:0;border-left:22px solid #fff;border-top:13px solid transparent;border-bottom:13px solid transparent;margin-left:5px}

/* === 移动端视频优化 === */
@media(max-width:768px){
  .video-card .play-overlay{transform:translate(-50%,-50%) scale(1);width:50px;height:50px}
  .video-card .play-overlay::after{border-left:16px solid #fff;border-top:10px solid transparent;border-bottom:10px solid transparent}
  .video-card .thumb video{-webkit-playsinline:true}
  .video-card .card-body h3{font-size:14px;-webkit-line-clamp:2}
  .video-card .card-body .meta{font-size:11px;flex-wrap:wrap;gap:8px}
  .video-card .duration{font-size:11px;padding:2px 6px}
  .community-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px}
  .community-card img{height:120px}
  .expert-grid{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
}

/* === 亲密教育科普卡片 === */
.edu-badge{display:inline-block;padding:3px 10px;background:rgba(200,164,90,.2);border:1px solid rgba(200,164,90,.4);border-radius:12px;font-size:11px;color:#c8a45a;margin-bottom:8px}

/* === 专家社交链接 === */
.expert-social{display:flex;justify-content:center;gap:10px;margin-top:10px}
.expert-social a{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;background:rgba(200,164,90,.15);color:#c8a45a;font-size:12px;transition:all .3s;text-decoration:none}
.expert-social a:hover{background:#c8a45a;color:#0d1b2e}

/* === 页脚Logo增强 === */
.footer-logo img{height:40px;border-radius:8px}

/* === 干扰标签隐藏 === */
.noise-wrap{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}