/* ============================================
   黑丝 - 动物写真与视频社区 原创样式表
   配色方案：自然绿 #2DB84D / 天空蓝 #1890FF / 暖阳橙 #FF8C00 / 深林黑 #1A2332
   ============================================ */

/* === 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:#2c3e50;background:#f5f7f0;line-height:1.7;overflow-x:hidden}
a{color:#2DB84D;text-decoration:none;transition:color .3s}
a:hover{color:#1890FF}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* === Header & Navigation === */
.site-header{background:linear-gradient(135deg,#1A2332 0%,#0d3320 100%);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:12px 20px;max-width:1200px;margin:0 auto}
.logo-wrap{display:flex;align-items:center;gap:10px}
.logo-wrap img{height:42px;width:auto}
.logo-wrap .brand-text{font-size:22px;font-weight:700;color:#2DB84D;letter-spacing:1px}
.main-nav{display:flex;gap:6px}
.main-nav a{color:#c8e6c9;padding:8px 16px;border-radius:20px;font-size:14px;font-weight:500;transition:all .3s}
.main-nav a:hover,.main-nav a.active{background:#2DB84D;color:#fff}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:24px;cursor:pointer}

/* === Search Bar === */
.search-bar{background:#e8f5e9;padding:14px 0;border-bottom:1px solid #c8e6c9}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;width:100%;max-width:600px;border-radius:25px;overflow:hidden;box-shadow:0 2px 12px rgba(45,184,77,.15)}
.search-box input{flex:1;padding:12px 20px;border:2px solid #2DB84D;border-right:none;border-radius:25px 0 0 25px;font-size:15px;outline:none;background:#fff}
.search-box input:focus{border-color:#1890FF}
.search-box button{padding:12px 28px;background:linear-gradient(135deg,#2DB84D,#1890FF);color:#fff;border:none;cursor:pointer;font-size:15px;font-weight:600;border-radius:0 25px 25px 0;transition:opacity .3s}
.search-box button:hover{opacity:.85}

/* === Hero Banner === */
.hero-section{position:relative;height:520px;overflow:hidden;background:#1A2332}
.hero-section img{width:100%;height:100%;object-fit:cover;opacity:.7}
.hero-overlay{position:absolute;top:0;left:0;right:0;bottom:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:linear-gradient(180deg,rgba(26,35,50,.3) 0%,rgba(26,35,50,.7) 100%);padding:20px}
.hero-overlay h1{font-size:48px;color:#fff;margin-bottom:12px;text-shadow:2px 2px 8px rgba(0,0,0,.5)}
.hero-overlay h1 span{color:#2DB84D}
.hero-overlay p{font-size:18px;color:#c8e6c9;max-width:700px;line-height:1.8}
.hero-overlay .hero-tags{margin-top:20px;display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.hero-overlay .hero-tags span{background:rgba(45,184,77,.25);color:#a5d6a7;padding:6px 16px;border-radius:15px;font-size:13px;border:1px solid rgba(45,184,77,.4)}

/* === Section Common === */
.section{padding:60px 0}
.section-alt{background:#fff}
.section-dark{background:#1A2332;color:#e0e0e0}
.section-green{background:linear-gradient(135deg,#e8f5e9,#f1f8e9)}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:32px;color:#1A2332;margin-bottom:8px;position:relative;display:inline-block}
.section-title h2::after{content:'';position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(90deg,#2DB84D,#1890FF);border-radius:2px}
.section-dark .section-title h2{color:#a5d6a7}
.section-title p{color:#666;font-size:15px;margin-top:14px}
.section-dark .section-title p{color:#90a4ae}

/* === Breadcrumb === */
.breadcrumb{padding:12px 0;font-size:13px;color:#78909c}
.breadcrumb a{color:#2DB84D}
.breadcrumb span{margin:0 6px;color:#b0bec5}

/* === Video Card Grid === */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.08);transition:transform .3s,box-shadow .3s;position:relative}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 32px rgba(45,184,77,.15)}
.video-card .thumb{position:relative;padding-top:66.67%;overflow:hidden;background:#e0e0e0}
.video-card .thumb img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .thumb img{transform:scale(1.08)}
.video-card .play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(45,184,77,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s,transform .3s}
.video-card:hover .play-btn{opacity:1;transform:translate(-50%,-50%) scale(1.1)}
.play-btn::after{content:'';width:0;height:0;border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.video-card .duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:12px}
.video-card .card-body{padding:14px}
.video-card .card-body h3{font-size:15px;color:#1A2332;margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-card .card-meta{display:flex;justify-content:space-between;font-size:12px;color:#90a4ae}
.video-card .card-meta .views{color:#2DB84D}

/* === Category Tags === */
.category-tags{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:30px}
.category-tags a{padding:8px 20px;border:2px solid #2DB84D;border-radius:20px;color:#2DB84D;font-size:14px;font-weight:500;transition:all .3s}
.category-tags a:hover,.category-tags a.active{background:#2DB84D;color:#fff}

/* === Expert Cards === */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#fff;border-radius:12px;padding:28px 20px;text-align:center;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-card img{width:90px;height:90px;border-radius:50%;object-fit:cover;margin:0 auto 14px;border:3px solid #2DB84D}
.expert-card h4{font-size:16px;color:#1A2332;margin-bottom:4px}
.expert-card .role{color:#2DB84D;font-size:13px;margin-bottom:10px}
.expert-card p{font-size:13px;color:#78909c;line-height:1.6}
.expert-card .btn-sm{display:inline-block;margin-top:12px;padding:6px 18px;background:linear-gradient(135deg,#2DB84D,#1890FF);color:#fff;border-radius:15px;font-size:13px}

/* === FAQ Section === */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:10px;margin-bottom:12px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.faq-item .faq-q{padding:16px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#1A2332;font-size:15px;transition:background .3s}
.faq-item .faq-q:hover{background:#e8f5e9}
.faq-item .faq-q::after{content:'+';font-size:22px;color:#2DB84D;transition:transform .3s}
.faq-item.active .faq-q::after{transform:rotate(45deg)}
.faq-item .faq-a{padding:0 20px;max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s ease;font-size:14px;color:#546e7a;line-height:1.8}
.faq-item.active .faq-a{max-height:300px;padding:0 20px 16px}

/* === Reviews === */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.review-card{background:#fff;border-radius:12px;padding:24px;box-shadow:0 4px 12px rgba(0,0,0,.06);border-left:4px solid #2DB84D}
.review-card .stars{color:#FF8C00;font-size:16px;margin-bottom:8px}
.review-card p{font-size:14px;color:#546e7a;line-height:1.7;margin-bottom:10px;font-style:italic}
.review-card .reviewer{font-size:13px;color:#2DB84D;font-weight:600}

/* === How-To Section === */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.howto-step{text-align:center;padding:24px 16px;background:#fff;border-radius:12px;box-shadow:0 2px 10px rgba(0,0,0,.06)}
.howto-step .step-num{width:48px;height:48px;background:linear-gradient(135deg,#2DB84D,#1890FF);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;margin:0 auto 14px}
.howto-step h4{font-size:15px;color:#1A2332;margin-bottom:8px}
.howto-step p{font-size:13px;color:#78909c;line-height:1.6}

/* === Contact Section === */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.contact-info{background:#fff;border-radius:12px;padding:30px;box-shadow:0 4px 16px rgba(0,0,0,.06)}
.contact-info h3{font-size:20px;color:#1A2332;margin-bottom:16px;padding-bottom:10px;border-bottom:2px solid #e8f5e9}
.contact-info .info-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:14px;font-size:14px;color:#546e7a}
.contact-info .info-item strong{color:#1A2332;min-width:80px}
.qrcode-wrap{display:flex;gap:30px;justify-content:center;align-items:center}
.qrcode-wrap .qr-item{text-align:center}
.qrcode-wrap .qr-item img{width:140px;height:140px;border-radius:8px;margin-bottom:8px}
.qrcode-wrap .qr-item p{font-size:13px;color:#78909c}

/* === Share Buttons === */
.share-section{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.share-btn{padding:10px 22px;border-radius:20px;color:#fff;font-size:14px;font-weight:500;transition:opacity .3s;cursor:pointer;border:none}
.share-btn:hover{opacity:.8}
.share-btn.wechat{background:#07c160}
.share-btn.weibo{background:#e6162d}
.share-btn.douyin{background:#161823}
.share-btn.bilibili{background:#00a1d6}

/* === Footer === */
.site-footer{background:#1A2332;color:#90a4ae;padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer-col h4{color:#a5d6a7;font-size:16px;margin-bottom:14px}
.footer-col p,.footer-col a{font-size:13px;color:#78909c;line-height:2}
.footer-col a:hover{color:#2DB84D}
.footer-col .footer-logo{height:36px;margin-bottom:10px}
.footer-bottom{border-top:1px solid #263238;padding-top:16px;text-align:center;font-size:12px;color:#546e7a}

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

/* === Responsive === */
@media(max-width:992px){
.video-grid{grid-template-columns:repeat(3,1fr)}
.expert-grid{grid-template-columns:repeat(2,1fr)}
.howto-steps{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:repeat(2,1fr)}
.hero-overlay h1{font-size:36px}
}
@media(max-width:768px){
.main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#1A2332;flex-direction:column;padding:16px;gap:4px}
.main-nav.open{display:flex}
.nav-toggle{display:block}
.video-grid{grid-template-columns:repeat(2,1fr)}
.contact-grid{grid-template-columns:1fr}
.review-grid{grid-template-columns:1fr}
.hero-section{height:380px}
.hero-overlay h1{font-size:28px}
.hero-overlay p{font-size:15px}
.section{padding:40px 0}
}
@media(max-width:480px){
.video-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:1fr}
.howto-steps{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.hero-section{height:300px}
.hero-overlay h1{font-size:24px}
}

/* === Interference tags hidden style === */
.dx7k2m,.nx3p8q,.bw9t4j,.hy6r1c,.kz5e7v,.mf2a9d,.pg4u6s,.rj8w3n,.tl1y5b,.vo0i2g,
.uw3c8f,.qe6h4a,.sd9m1k,.xn2p7t,.zb5v0j,.ac8d3r,.fg1k6w,.hi4n9e,.jl7q2s,.km0t5y{
position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}