/* =============================================
   抖阴 - 动物写真与视频社区 全站样式
   品牌色: #0a6e6e (深青) #d4a843 (暖金) #1a1a2e (深蓝黑)
   ============================================= */

/* Reset & Base */
*,*::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",Arial,sans-serif;color:#333;background:#f8f9fa;line-height:1.8;overflow-x:hidden}
a{color:#0a6e6e;text-decoration:none;transition:color .3s}
a:hover{color:#d4a843}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.4;color:#1a1a2e}

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

/* ===== Header & Navigation ===== */
.site-header{background:#1a1a2e;position:sticky;top:0;z-index:1000;box-shadow:0 2px 20px rgba(0,0,0,.3)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;max-width:1200px;margin:0 auto}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{width:42px;height:42px;border-radius:8px}
.logo-wrap .brand-name{color:#d4a843;font-size:1.4rem;font-weight:700;letter-spacing:1px}
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{color:#e0e0e0;padding:12px 16px;font-size:.95rem;transition:all .3s;position:relative}
.main-nav a:hover,.main-nav a.active{color:#d4a843;background:rgba(212,168,67,.1)}
.main-nav a::after{content:'';position:absolute;bottom:0;left:50%;width:0;height:2px;background:#d4a843;transition:all .3s;transform:translateX(-50%)}
.main-nav a:hover::after,.main-nav a.active::after{width:60%}
.mobile-toggle{display:none;color:#fff;font-size:1.5rem;cursor:pointer;background:none;border:none}

/* Search Bar */
.search-bar{background:#12122a;padding:12px 0;border-bottom:1px solid rgba(212,168,67,.2)}
.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;border:2px solid #0a6e6e;border-right:none;border-radius:25px 0 0 25px;font-size:.95rem;outline:none;background:#1a1a2e;color:#fff}
.search-box input::placeholder{color:#888}
.search-box input:focus{border-color:#d4a843}
.search-box button{padding:10px 24px;background:linear-gradient(135deg,#0a6e6e,#0d8a8a);color:#fff;border:none;border-radius:0 25px 25px 0;cursor:pointer;font-size:.95rem;transition:background .3s}
.search-box button:hover{background:linear-gradient(135deg,#d4a843,#c49a3a)}

/* ===== Hero Banner ===== */
.hero-banner{position:relative;height:520px;overflow:hidden;background:#1a1a2e}
.hero-banner .banner-bg{width:100%;height:100%;object-fit:cover;opacity:.7}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(26,26,46,.3) 0%,rgba(26,26,46,.85) 100%);display:flex;align-items:center;justify-content:center}
.hero-content{text-align:center;color:#fff;max-width:800px;padding:0 20px}
.hero-content h1{font-size:2.8rem;margin-bottom:16px;text-shadow:0 2px 10px rgba(0,0,0,.5)}
.hero-content h1 .brand-highlight{color:#d4a843}
.hero-content p{font-size:1.15rem;color:#ccc;margin-bottom:24px;line-height:1.9}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-primary{display:inline-block;padding:12px 32px;background:linear-gradient(135deg,#d4a843,#c49a3a);color:#fff;border-radius:30px;font-weight:600;transition:all .3s;border:none;cursor:pointer;font-size:1rem}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(212,168,67,.4);color:#fff}
.btn-outline{display:inline-block;padding:12px 32px;border:2px solid #0a6e6e;color:#0a6e6e;border-radius:30px;font-weight:600;transition:all .3s;background:transparent;cursor:pointer;font-size:1rem}
.btn-outline:hover{background:#0a6e6e;color:#fff;transform:translateY(-2px)}

/* ===== Section Titles ===== */
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:2rem;color:#1a1a2e;margin-bottom:12px;position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:3px;background:linear-gradient(90deg,#0a6e6e,#d4a843);margin:12px auto 0}
.section-title p{color:#666;font-size:1.05rem;max-width:600px;margin:0 auto}

/* ===== Video Cards Grid ===== */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:all .3s;position:relative}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(0,0,0,.15)}
.video-thumb{position:relative;overflow:hidden;aspect-ratio:16/9}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.play-btn{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.4);opacity:0;transition:opacity .3s}
.video-card:hover .play-btn{opacity:1}
.play-btn span{width:56px;height:56px;background:rgba(212,168,67,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:0}
.play-btn span::after{content:'';display:block;width:0;height:0;border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:4px}
.video-info{padding:14px 16px}
.video-info h3{font-size:.95rem;color:#1a1a2e;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;justify-content:space-between;color:#999;font-size:.8rem}
.video-meta .views::before{content:'▶ '}
.video-meta .likes::before{content:'♥ '}
.video-tag{position:absolute;top:10px;left:10px;background:rgba(212,168,67,.9);color:#fff;padding:3px 10px;border-radius:12px;font-size:.75rem;font-weight:600}
.video-duration{position:absolute;bottom:10px;right:10px;background:rgba(0,0,0,.7);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}

/* ===== Module Cards ===== */
.module-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.module-card{background:#fff;border-radius:12px;padding:30px 24px;text-align:center;box-shadow:0 4px 15px rgba(0,0,0,.06);transition:all .3s;border:1px solid #eee}
.module-card:hover{transform:translateY(-4px);box-shadow:0 10px 25px rgba(10,110,110,.12);border-color:#0a6e6e}
.module-card .icon{width:64px;height:64px;margin:0 auto 16px;background:linear-gradient(135deg,#0a6e6e,#0d8a8a);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;color:#fff}
.module-card h3{font-size:1.1rem;color:#1a1a2e;margin-bottom:10px}
.module-card p{color:#666;font-size:.9rem;line-height:1.7}

/* ===== Expert Section ===== */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:all .3s;text-align:center}
.expert-card:hover{transform:translateY(-4px);box-shadow:0 10px 25px rgba(0,0,0,.12)}
.expert-card .avatar{width:100%;aspect-ratio:1;overflow:hidden}
.expert-card .avatar img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.expert-card:hover .avatar img{transform:scale(1.05)}
.expert-card .info{padding:20px 16px}
.expert-card .info h3{font-size:1.05rem;color:#1a1a2e;margin-bottom:4px}
.expert-card .info .role{color:#0a6e6e;font-size:.85rem;margin-bottom:10px}
.expert-card .info p{color:#666;font-size:.85rem;line-height:1.6;margin-bottom:12px}
.expert-card .actions{display:flex;gap:8px;justify-content:center;padding:0 16px 20px}
.expert-card .actions a{padding:6px 14px;border-radius:20px;font-size:.8rem;font-weight:600}
.btn-sm-primary{background:#0a6e6e;color:#fff !important}
.btn-sm-primary:hover{background:#085858}
.btn-sm-outline{border:1px solid #d4a843;color:#d4a843 !important}
.btn-sm-outline:hover{background:#d4a843;color:#fff !important}

/* ===== Community Section ===== */
.community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.community-card{background:linear-gradient(135deg,#1a1a2e,#2a2a4e);border-radius:12px;padding:24px;color:#fff;transition:all .3s}
.community-card:hover{transform:translateY(-4px);box-shadow:0 10px 25px rgba(26,26,46,.3)}
.community-card h3{color:#d4a843;font-size:1.1rem;margin-bottom:10px}
.community-card p{color:#bbb;font-size:.9rem;line-height:1.7;margin-bottom:14px}
.community-card .stats{display:flex;gap:16px;font-size:.8rem;color:#888}
.community-card .stats span{display:flex;align-items:center;gap:4px}

/* ===== FAQ Section ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:10px;margin-bottom:12px;box-shadow:0 2px 10px rgba(0,0,0,.05);overflow:hidden}
.faq-item .faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#1a1a2e;transition:background .3s}
.faq-item .faq-q:hover{background:#f0f7f7}
.faq-item .faq-q .arrow{transition:transform .3s;color:#0a6e6e;font-size:1.2rem}
.faq-item.active .faq-q .arrow{transform:rotate(180deg)}
.faq-item .faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .4s ease;color:#555;line-height:1.8}
.faq-item.active .faq-a{padding:0 24px 18px;max-height:500px}

/* ===== Reviews Section ===== */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.review-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 15px rgba(0,0,0,.06);border-left:4px solid #d4a843}
.review-card .stars{color:#d4a843;font-size:1.1rem;margin-bottom:10px}
.review-card blockquote{color:#555;font-size:.95rem;line-height:1.8;margin-bottom:14px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:10px}
.review-card .reviewer .name{font-weight:600;color:#1a1a2e;font-size:.9rem}
.review-card .reviewer .date{color:#999;font-size:.8rem}

/* ===== Contact Section ===== */
.contact-section{background:#1a1a2e;color:#fff}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.contact-item{text-align:center}
.contact-item h3{color:#d4a843;font-size:1.1rem;margin-bottom:12px}
.contact-item p{color:#bbb;font-size:.9rem;line-height:1.8}
.contact-item img{width:160px;height:160px;margin:10px auto;border-radius:8px}

/* ===== Partners Section ===== */
.partner-logos{display:flex;justify-content:center;flex-wrap:wrap;gap:30px;align-items:center}
.partner-logos .partner-item{width:140px;height:80px;background:#fff;border-radius:10px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 10px rgba(0,0,0,.06);transition:all .3s;border:1px solid #eee;font-weight:700;color:#0a6e6e;font-size:.9rem}
.partner-logos .partner-item:hover{border-color:#d4a843;box-shadow:0 6px 20px rgba(212,168,67,.15)}

/* ===== How-To Guide ===== */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.howto-step{background:#fff;border-radius:12px;padding:28px 20px;text-align:center;box-shadow:0 4px 15px rgba(0,0,0,.06);position:relative;counter-increment:step}
.howto-step::before{content:counter(step);position:absolute;top:-14px;left:50%;transform:translateX(-50%);width:36px;height:36px;background:linear-gradient(135deg,#0a6e6e,#0d8a8a);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1rem}
.howto-step h4{margin:10px 0 8px;color:#1a1a2e;font-size:1rem}
.howto-step p{color:#666;font-size:.85rem;line-height:1.6}

/* ===== Share Buttons ===== */
.share-bar{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;padding:20px 0}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:20px;font-size:.85rem;font-weight:600;color:#fff;transition:all .3s;cursor:pointer;border:none}
.share-btn:hover{transform:translateY(-2px);opacity:.9;color:#fff}
.share-wechat{background:#07c160}
.share-weibo{background:#e6162d}
.share-douyin{background:#161823}
.share-bilibili{background:#fb7299}

/* ===== Footer ===== */
.site-footer{background:#12122a;color:#999;padding:40px 0 20px}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-top h4{color:#d4a843;font-size:1rem;margin-bottom:14px}
.footer-top p{font-size:.85rem;line-height:1.8}
.footer-top a{color:#999;font-size:.85rem;display:block;padding:3px 0;transition:color .3s}
.footer-top a:hover{color:#d4a843}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:12px}
.footer-logo img{width:36px;height:36px;border-radius:6px}
.footer-logo span{color:#d4a843;font-weight:700;font-size:1.2rem}
.footer-bottom{text-align:center;padding-top:20px;font-size:.8rem;color:#666}
.footer-qr{display:flex;gap:20px;justify-content:center}
.footer-qr .qr-item{text-align:center}
.footer-qr .qr-item img{width:120px;height:120px;border-radius:6px;margin-bottom:6px}
.footer-qr .qr-item p{font-size:.75rem;color:#888}

/* ===== Breadcrumb ===== */
.breadcrumb{padding:14px 0;font-size:.85rem;color:#999}
.breadcrumb a{color:#0a6e6e}
.breadcrumb span{margin:0 6px;color:#ccc}

/* ===== Inner Page ===== */
.page-hero{background:linear-gradient(135deg,#1a1a2e,#2a2a4e);padding:50px 0;text-align:center;color:#fff}
.page-hero h1{font-size:2.2rem;color:#fff;margin-bottom:10px}
.page-hero p{color:#bbb;font-size:1.05rem}
.content-section{padding:40px 0}
.content-section h2{font-size:1.6rem;color:#1a1a2e;margin-bottom:16px}
.content-section p{color:#555;line-height:1.9;margin-bottom:16px}

/* ===== AI Section ===== */
.ai-features{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center}
.ai-features .ai-img{border-radius:12px;overflow:hidden;box-shadow:0 8px 25px rgba(0,0,0,.1)}
.ai-features .ai-img img{width:100%;height:auto}
.ai-features .ai-text h3{font-size:1.3rem;color:#1a1a2e;margin-bottom:12px}
.ai-features .ai-text p{color:#555;line-height:1.8;margin-bottom:12px}
.ai-features .ai-text ul{padding-left:0}
.ai-features .ai-text ul li{padding:6px 0;color:#555;font-size:.9rem;position:relative;padding-left:20px}
.ai-features .ai-text ul li::before{content:'✦';position:absolute;left:0;color:#d4a843}

/* ===== Responsive ===== */
@media(max-width:1024px){
    .video-grid{grid-template-columns:repeat(3,1fr)}
    .expert-grid{grid-template-columns:repeat(2,1fr)}
    .footer-top{grid-template-columns:1fr 1fr}
    .howto-steps{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
    .mobile-toggle{display:block}
    .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#1a1a2e;flex-direction:column;padding:10px 0;box-shadow:0 10px 20px rgba(0,0,0,.3)}
    .main-nav.open{display:flex}
    .main-nav a{padding:12px 24px;border-bottom:1px solid rgba(255,255,255,.05)}
    .hero-banner{height:400px}
    .hero-content h1{font-size:1.8rem}
    .video-grid{grid-template-columns:repeat(2,1fr)}
    .module-grid{grid-template-columns:1fr}
    .community-grid{grid-template-columns:1fr}
    .expert-grid{grid-template-columns:repeat(2,1fr)}
    .ai-features{grid-template-columns:1fr}
    .contact-grid{grid-template-columns:1fr}
    .review-grid{grid-template-columns:1fr}
    .footer-top{grid-template-columns:1fr}
    .howto-steps{grid-template-columns:1fr}
    .section-padding{padding:40px 0}
    .section-title h2{font-size:1.6rem}
}
@media(max-width:480px){
    .video-grid{grid-template-columns:1fr}
    .expert-grid{grid-template-columns:1fr}
    .hero-banner{height:320px}
    .hero-content h1{font-size:1.5rem}
    .hero-btns{flex-direction:column;align-items:center}
}

/* ===== Mobile Video Card Enhancement ===== */
@media(max-width:768px){
    .video-card{border-radius:8px}
    .video-thumb{aspect-ratio:16/9}
    .play-btn{opacity:.6}
    .play-btn span{width:44px;height:44px}
    .video-info{padding:10px 12px}
    .video-info h3{font-size:.88rem;-webkit-line-clamp:2}
    .video-meta{font-size:.75rem}
    .video-tag{font-size:.7rem;padding:2px 8px}
    .video-duration{font-size:.7rem}
    .search-box{max-width:100%}
    .search-box input{padding:8px 14px;font-size:.85rem}
    .search-box button{padding:8px 18px;font-size:.85rem}
}
@media(max-width:480px){
    .play-btn span{width:38px;height:38px}
    .video-info h3{font-size:.82rem}
    .hero-content p{font-size:.95rem}
}

/* ===== Article Meta ===== */
.article-meta{padding:8px 0;border-bottom:1px solid #eee;margin-bottom:20px}

/* ===== Timeline ===== */
.timeline h4{font-size:1rem}
.timeline p{font-size:.9rem;color:#555}

/* ===== Lazy Load ===== */
img[loading="lazy"]{opacity:0;transition:opacity .5s}
img[loading="lazy"].loaded,img[loading="lazy"][src]{opacity:1}

/* ===== Print Styles ===== */
@media print{
    .site-header,.search-bar,.mobile-toggle,.share-bar,.dx-noise{display:none !important}
    body{color:#000;background:#fff}
    a{color:#000;text-decoration:underline}
}

/* ===== Interference Tags (hidden) ===== */
.dx-noise{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}

/* ===== HTML5 Video Card Enhancement ===== */
.video-thumb video{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;background:#1a1a2e}
.video-thumb{position:relative;overflow:hidden;aspect-ratio:16/9;background:#1a1a2e}
.video-playing-overlay{animation:fadeIn .3s ease}
.video-playing-msg .loading-icon{display:inline-block;font-size:2rem;animation:pulse 1s infinite;color:#d4a843}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(1.2)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}