/* ===== 成人快手视频 - 全站样式 ===== */
/* 品牌：成人快手视频 | 域名：813511.cn */

/* Reset & Base */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"Microsoft YaHei","PingFang SC","Helvetica Neue",Arial,sans-serif;color:#333;background:#0a0a0a;line-height:1.8;overflow-x:hidden}
a{color:#d4a853;text-decoration:none;transition:color .3s}
a:hover{color:#f0c060}
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}

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

/* ===== Header / Navigation ===== */
.site-header{background:rgba(10,10,10,.95);position:fixed;top:0;left:0;width:100%;z-index:1000;border-bottom:1px solid rgba(212,168,83,.3);backdrop-filter:blur(10px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;max-width:1200px;margin:0 auto}
.logo-link{display:flex;align-items:center;gap:10px}
.logo-link img{height:50px;width:auto}
.logo-text{font-size:20px;font-weight:700;color:#d4a853;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{color:#ccc;padding:12px 16px;font-size:15px;transition:all .3s;position:relative}
.main-nav a:hover,.main-nav a.active{color:#d4a853}
.main-nav a::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:0;height:2px;background:#d4a853;transition:width .3s}
.main-nav a:hover::after,.main-nav a.active::after{width:60%}
.mobile-menu-btn{display:none;background:none;border:none;color:#d4a853;font-size:24px;cursor:pointer}

/* Search Bar */
.search-bar{background:rgba(20,20,20,.9);padding:15px 0;border-bottom:1px solid rgba(212,168,83,.15)}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%}
.search-box input{flex:1;padding:10px 20px;border:1px solid rgba(212,168,83,.4);border-right:none;border-radius:25px 0 0 25px;background:rgba(30,30,30,.8);color:#fff;font-size:14px;outline:none}
.search-box input::placeholder{color:#888}
.search-box input:focus{border-color:#d4a853}
.search-box button{padding:10px 25px;background:linear-gradient(135deg,#d4a853,#b8860b);color:#fff;border:none;border-radius:0 25px 25px 0;cursor:pointer;font-size:14px;transition:opacity .3s}
.search-box button:hover{opacity:.85}

/* ===== Banner ===== */
.hero-banner{position:relative;height:80vh;min-height:500px;overflow:hidden;margin-top:71px}
.hero-banner .banner-bg{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;filter:brightness(.6)}
.hero-banner .banner-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,rgba(0,0,0,.7) 0%,rgba(0,0,0,.3) 50%,rgba(212,168,83,.1) 100%)}
.hero-content{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center;padding:0 60px;max-width:1200px;margin:0 auto}
.hero-content h1{font-size:48px;color:#d4a853;margin-bottom:15px;text-shadow:2px 2px 10px rgba(0,0,0,.8)}
.hero-content h2{font-size:24px;color:#eee;margin-bottom:20px;font-weight:400}
.hero-content p{font-size:16px;color:#ccc;max-width:600px;margin-bottom:30px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags span{background:rgba(212,168,83,.2);border:1px solid rgba(212,168,83,.4);color:#d4a853;padding:6px 16px;border-radius:20px;font-size:13px}

/* ===== Breadcrumb ===== */
.breadcrumb{padding:12px 0;font-size:13px;color:#888}
.breadcrumb a{color:#d4a853}
.breadcrumb span{margin:0 8px;color:#555}

/* ===== Section Titles ===== */
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:32px;color:#d4a853;margin-bottom:10px}
.section-title h3{font-size:18px;color:#999;font-weight:400}
.section-title .title-line{width:80px;height:3px;background:linear-gradient(90deg,#d4a853,#b8860b);margin:15px auto 0}

/* ===== Video Card Grid ===== */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px}
.video-card{background:#1a1a1a;border-radius:12px;overflow:hidden;transition:transform .3s,box-shadow .3s;cursor:pointer;border:1px solid rgba(212,168,83,.1)}
.video-card:hover{transform:translateY(-5px);box-shadow:0 10px 30px rgba(212,168,83,.15)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-thumb img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:rgba(212,168,83,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;pointer-events:none}
.play-btn::after{content:'';width:0;height:0;border-style:solid;border-width:12px 0 12px 20px;border-color:transparent transparent transparent #fff;margin-left:4px}
.video-card:hover .play-btn{opacity:1}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.8);color:#fff;padding:2px 8px;border-radius:4px;font-size:12px}
.video-stats{position:absolute;bottom:8px;left:8px;display:flex;gap:10px}
.video-stats span{background:rgba(0,0,0,.7);color:#ccc;padding:2px 8px;border-radius:4px;font-size:11px}
.video-info{padding:15px}
.video-info h4{font-size:15px;color:#eee;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-info .video-meta{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:#888}
.video-info .video-meta .views{color:#d4a853}
.video-tags{display:flex;flex-wrap:wrap;gap:5px;margin-top:8px}
.video-tags span{background:rgba(212,168,83,.1);color:#d4a853;padding:2px 8px;border-radius:10px;font-size:11px}

/* ===== Category Tabs ===== */
.category-tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin-bottom:30px}
.category-tabs .tab{padding:8px 20px;background:rgba(30,30,30,.8);border:1px solid rgba(212,168,83,.3);color:#ccc;border-radius:20px;cursor:pointer;transition:all .3s;font-size:14px}
.category-tabs .tab:hover,.category-tabs .tab.active{background:linear-gradient(135deg,#d4a853,#b8860b);color:#fff;border-color:#d4a853}

/* ===== AI Section ===== */
.ai-features{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.ai-card{background:linear-gradient(135deg,#1a1a2e,#16213e);border-radius:12px;padding:30px;text-align:center;border:1px solid rgba(212,168,83,.15);transition:transform .3s}
.ai-card:hover{transform:translateY(-5px)}
.ai-card .ai-icon{font-size:48px;margin-bottom:15px}
.ai-card h4{color:#d4a853;font-size:18px;margin-bottom:10px}
.ai-card p{color:#aaa;font-size:14px}

/* ===== Expert / Team ===== */
.team-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:25px}
.team-card{background:#1a1a1a;border-radius:12px;overflow:hidden;text-align:center;border:1px solid rgba(212,168,83,.1);transition:transform .3s}
.team-card:hover{transform:translateY(-5px)}
.team-card .team-photo{width:100%;height:280px;object-fit:cover}
.team-card .team-info{padding:20px}
.team-card h4{color:#d4a853;font-size:18px;margin-bottom:5px}
.team-card .team-role{color:#888;font-size:13px;margin-bottom:10px}
.team-card p{color:#aaa;font-size:13px;margin-bottom:15px}
.team-card .team-links{display:flex;justify-content:center;gap:10px}
.team-card .team-links a{padding:6px 14px;border:1px solid #d4a853;color:#d4a853;border-radius:20px;font-size:12px;transition:all .3s}
.team-card .team-links a:hover{background:#d4a853;color:#000}

/* ===== Partner Logos ===== */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.partner-wall .partner-item{background:rgba(30,30,30,.8);padding:20px 30px;border-radius:10px;border:1px solid rgba(212,168,83,.15);color:#888;font-size:16px;font-weight:600;transition:all .3s}
.partner-wall .partner-item:hover{border-color:#d4a853;color:#d4a853}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#1a1a1a;border:1px solid rgba(212,168,83,.15);border-radius:10px;margin-bottom:12px;overflow:hidden}
.faq-question{padding:18px 20px;color:#eee;font-size:15px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-question:hover{background:rgba(212,168,83,.05)}
.faq-question .faq-toggle{color:#d4a853;font-size:20px;transition:transform .3s}
.faq-item.active .faq-toggle{transform:rotate(45deg)}
.faq-answer{padding:0 20px;max-height:0;overflow:hidden;transition:max-height .3s,padding .3s;color:#aaa;font-size:14px}
.faq-item.active .faq-answer{max-height:300px;padding:0 20px 18px}

/* ===== Reviews ===== */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.review-card{background:#1a1a1a;border-radius:12px;padding:25px;border:1px solid rgba(212,168,83,.1)}
.review-card .stars{color:#d4a853;font-size:16px;margin-bottom:10px}
.review-card p{color:#ccc;font-size:14px;margin-bottom:15px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:10px}
.review-card .reviewer .avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#d4a853,#b8860b);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:16px}
.review-card .reviewer .name{color:#eee;font-size:14px}
.review-card .reviewer .date{color:#888;font-size:12px}

/* ===== Contact Section ===== */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:25px}
.contact-card{background:#1a1a1a;border-radius:12px;padding:25px;border:1px solid rgba(212,168,83,.1)}
.contact-card h4{color:#d4a853;font-size:18px;margin-bottom:15px}
.contact-card p{color:#aaa;font-size:14px;margin-bottom:8px}
.contact-card .qr-img{width:150px;height:150px;margin:10px auto;border-radius:8px;object-fit:cover}

/* ===== How-To Guide ===== */
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.howto-step{background:#1a1a1a;border-radius:12px;padding:25px;text-align:center;border:1px solid rgba(212,168,83,.1)}
.howto-step .step-num{width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,#d4a853,#b8860b);color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;margin:0 auto 15px}
.howto-step h4{color:#eee;font-size:16px;margin-bottom:8px}
.howto-step p{color:#aaa;font-size:13px}

/* ===== Social Share ===== */
.share-bar{display:flex;justify-content:center;gap:15px;padding:20px 0}
.share-btn{padding:10px 20px;border-radius:25px;color:#fff;font-size:13px;cursor:pointer;transition:opacity .3s;border:none}
.share-btn:hover{opacity:.8}
.share-btn.wechat{background:#07c160}
.share-btn.weibo{background:#e6162d}
.share-btn.douyin{background:#000;border:1px solid #fe2c55}
.share-btn.bilibili{background:#00a1d6}

/* ===== Footer ===== */
.site-footer{background:#0d0d0d;border-top:1px solid rgba(212,168,83,.2);padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:30px;margin-bottom:30px}
.footer-col h4{color:#d4a853;font-size:16px;margin-bottom:15px}
.footer-col p,.footer-col a{color:#888;font-size:13px;display:block;margin-bottom:8px}
.footer-col a:hover{color:#d4a853}
.footer-col .footer-logo{height:40px;margin-bottom:10px}
.footer-qr{display:flex;gap:15px;margin-top:10px}
.footer-qr img{width:100px;height:100px;border-radius:6px}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(212,168,83,.1);color:#666;font-size:12px}
.footer-bottom a{color:#d4a853}

/* ===== Community Module ===== */
.community-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:15px}
.community-tag{background:rgba(212,168,83,.08);border:1px solid rgba(212,168,83,.2);border-radius:10px;padding:20px;text-align:center;transition:all .3s;cursor:pointer}
.community-tag:hover{background:rgba(212,168,83,.15);border-color:#d4a853}
.community-tag h5{color:#d4a853;font-size:15px;margin-bottom:5px}
.community-tag p{color:#888;font-size:12px}

/* ===== Inner Page Styles ===== */
.page-hero{background:#111;padding:100px 0 40px;text-align:center;border-bottom:1px solid rgba(212,168,83,.15)}
.page-hero h1{font-size:36px;color:#d4a853;margin-bottom:10px}
.page-hero p{color:#999;font-size:16px}
.page-content{background:#111;min-height:60vh}

/* ===== Responsive ===== */
@media(max-width:768px){
  .header-inner{flex-wrap:wrap}
  .main-nav{display:none;width:100%;flex-direction:column;padding:10px 0}
  .main-nav.open{display:flex}
  .mobile-menu-btn{display:block}
  .hero-banner{height:60vh;margin-top:60px}
  .hero-content{padding:0 20px}
  .hero-content h1{font-size:28px}
  .hero-content h2{font-size:18px}
  .ai-features{grid-template-columns:1fr}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
  .team-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section-padding{padding:40px 0}
  .section-title h2{font-size:24px}
  .partner-wall{gap:15px}
  .partner-wall .partner-item{padding:12px 18px;font-size:14px}
  .howto-steps{grid-template-columns:1fr}
  .share-bar{flex-wrap:wrap}
}
@media(max-width:480px){
  .hero-content h1{font-size:22px}
  .video-grid{grid-template-columns:1fr}
  .search-box{flex-direction:column}
  .search-box input{border-radius:25px;border-right:1px solid rgba(212,168,83,.4);margin-bottom:8px}
  .search-box button{border-radius:25px}
}

/* ===== Lazy Load Placeholder ===== */
.lazy{opacity:0;transition:opacity .5s}
.lazy.loaded{opacity:1}

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

/* ===== Dark Section Alternating ===== */
.section-dark{background:#0a0a0a}
.section-darker{background:#111}