/* 91暗网 - 修车改装视频社区 全站样式 */
/* pyvem96.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:#e0e0e0;background:#0a0a0f;line-height:1.8;overflow-x:hidden}
a{color:#00b4ff;text-decoration:none;transition:color .3s}
a:hover{color:#00e5ff}
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:60px 0}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;color:#fff;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:3px;background:linear-gradient(90deg,#00b4ff,#0066ff);margin:10px auto 0}
.section-title p{color:#999;font-size:1rem;margin-top:8px}

/* ========== Header & Nav ========== */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(10,10,15,.95);backdrop-filter:blur(10px);border-bottom:1px solid rgba(0,180,255,.15);transition:all .3s}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:10px}
.logo img{height:40px;width:auto}
.logo span{font-size:1.4rem;font-weight:800;color:#fff;letter-spacing:1px}
.main-nav{display:flex;align-items:center;gap:0}
.main-nav a{padding:8px 16px;color:#ccc;font-size:.95rem;transition:all .3s;position:relative}
.main-nav a:hover,.main-nav a.active{color:#00b4ff}
.main-nav a::after{content:'';position:absolute;bottom:0;left:50%;width:0;height:2px;background:#00b4ff;transition:all .3s;transform:translateX(-50%)}
.main-nav a:hover::after,.main-nav a.active::after{width:60%}
.mobile-menu-btn{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}

/* ========== Search Bar ========== */
.search-bar{background:rgba(20,20,30,.8);padding:12px 0;border-bottom:1px solid rgba(0,180,255,.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 20px;background:rgba(255,255,255,.08);border:1px solid rgba(0,180,255,.3);border-right:none;border-radius:25px 0 0 25px;color:#fff;font-size:.95rem;outline:none;transition:border-color .3s}
.search-box input:focus{border-color:#00b4ff}
.search-box input::placeholder{color:#666}
.search-box button{padding:10px 25px;background:linear-gradient(135deg,#0066ff,#00b4ff);border:none;border-radius:0 25px 25px 0;color:#fff;font-size:.95rem;cursor:pointer;transition:opacity .3s;white-space:nowrap}
.search-box button:hover{opacity:.85}

/* ========== Banner ========== */
.banner{position:relative;height:85vh;min-height:500px;overflow:hidden;margin-top:70px}
.banner-bg{position:absolute;inset:0;background-size:cover;background-position:center;background-repeat:no-repeat}
.banner-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,10,15,.3) 0%,rgba(10,10,15,.7) 60%,rgba(10,10,15,.95) 100%)}
.banner-content{position:relative;z-index:2;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:0 20px}
.banner-content h1{font-size:3.2rem;margin-bottom:15px;background:linear-gradient(135deg,#fff,#00b4ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.banner-content .subtitle{font-size:1.3rem;color:#ccc;margin-bottom:25px;max-width:700px}
.banner-content .desc{font-size:1rem;color:#999;max-width:800px;line-height:1.8}
.banner-btns{display:flex;gap:15px;margin-top:30px;flex-wrap:wrap;justify-content:center}
.btn{display:inline-block;padding:12px 30px;border-radius:25px;font-size:1rem;font-weight:600;transition:all .3s;cursor:pointer;border:none}
.btn-primary{background:linear-gradient(135deg,#0066ff,#00b4ff);color:#fff}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,102,255,.4);color:#fff}
.btn-outline{background:transparent;border:2px solid #00b4ff;color:#00b4ff}
.btn-outline:hover{background:#00b4ff;color:#fff;transform:translateY(-2px)}

/* ========== Video Card Grid ========== */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.video-card{background:rgba(20,20,35,.8);border-radius:12px;overflow:hidden;border:1px solid rgba(0,180,255,.1);transition:all .3s;position:relative}
.video-card:hover{transform:translateY(-5px);border-color:rgba(0,180,255,.3);box-shadow:0 10px 30px rgba(0,0,0,.5)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#111}
.video-thumb img{position:absolute;inset: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(0,102,255,.8);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;cursor:pointer}
.play-btn::after{content:'';border-style:solid;border-width:10px 0 10px 18px;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:.8rem}
.video-info{padding:15px}
.video-info h3{font-size:1rem;color:#fff;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;gap:15px;color:#888;font-size:.85rem}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tags{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.video-tags span{background:rgba(0,180,255,.1);color:#00b4ff;padding:2px 10px;border-radius:12px;font-size:.75rem}

/* ========== Category Tabs ========== */
.category-tabs{display:flex;gap:10px;justify-content:center;margin-bottom:30px;flex-wrap:wrap}
.category-tabs .tab{padding:8px 22px;border-radius:20px;background:rgba(255,255,255,.05);color:#999;cursor:pointer;transition:all .3s;border:1px solid transparent;font-size:.9rem}
.category-tabs .tab:hover,.category-tabs .tab.active{background:rgba(0,180,255,.15);color:#00b4ff;border-color:rgba(0,180,255,.3)}

/* ========== Team Section ========== */
.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
.team-card{background:rgba(20,20,35,.8);border-radius:12px;overflow:hidden;border:1px solid rgba(0,180,255,.1);text-align:center;padding:25px 20px;transition:all .3s}
.team-card:hover{transform:translateY(-5px);border-color:rgba(0,180,255,.3)}
.team-card .avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 15px;overflow:hidden;border:3px solid rgba(0,180,255,.3)}
.team-card .avatar img{width:100%;height:100%;object-fit:cover}
.team-card h4{color:#fff;font-size:1.1rem;margin-bottom:5px}
.team-card .role{color:#00b4ff;font-size:.85rem;margin-bottom:10px}
.team-card p{color:#999;font-size:.85rem;line-height:1.6}
.team-card .team-links{margin-top:12px;display:flex;gap:8px;justify-content:center}
.team-card .team-links a{padding:5px 14px;border-radius:15px;font-size:.8rem;border:1px solid rgba(0,180,255,.3);color:#00b4ff;transition:all .3s}
.team-card .team-links a:hover{background:#00b4ff;color:#fff}

/* ========== FAQ Section ========== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:rgba(20,20,35,.8);border-radius:10px;margin-bottom:12px;border:1px solid rgba(0,180,255,.1);overflow:hidden}
.faq-question{padding:18px 25px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:#fff;font-size:1rem;font-weight:600;transition:background .3s}
.faq-question:hover{background:rgba(0,180,255,.05)}
.faq-question .icon{font-size:1.2rem;transition:transform .3s;color:#00b4ff}
.faq-question.active .icon{transform:rotate(45deg)}
.faq-answer{padding:0 25px;max-height:0;overflow:hidden;transition:all .3s;color:#999;font-size:.95rem;line-height:1.8}
.faq-answer.show{padding:0 25px 18px;max-height:500px}

/* ========== Reviews Section ========== */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.review-card{background:rgba(20,20,35,.8);border-radius:12px;padding:25px;border:1px solid rgba(0,180,255,.1);transition:all .3s}
.review-card:hover{border-color:rgba(0,180,255,.3)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{width:45px;height:45px;border-radius:50%;background:linear-gradient(135deg,#0066ff,#00b4ff);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.1rem}
.review-name{color:#fff;font-weight:600}
.review-date{color:#666;font-size:.8rem}
.review-stars{color:#ffb800;margin-bottom:8px;font-size:.9rem}
.review-text{color:#bbb;font-size:.95rem;line-height:1.7}

/* ========== Partners Logo Wall ========== */
.partner-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;align-items:center}
.partner-item{background:rgba(255,255,255,.05);border-radius:10px;padding:20px;display:flex;align-items:center;justify-content:center;height:80px;border:1px solid rgba(255,255,255,.08);transition:all .3s;color:#888;font-weight:700;font-size:1rem}
.partner-item:hover{background:rgba(0,180,255,.1);border-color:rgba(0,180,255,.2);color:#00b4ff}

/* ========== AI Section ========== */
.ai-features{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.ai-card{background:rgba(20,20,35,.8);border-radius:12px;padding:30px;border:1px solid rgba(0,180,255,.1);text-align:center;transition:all .3s}
.ai-card:hover{transform:translateY(-5px);border-color:rgba(0,180,255,.3)}
.ai-card .ai-icon{font-size:2.5rem;margin-bottom:15px}
.ai-card h4{color:#fff;font-size:1.1rem;margin-bottom:10px}
.ai-card p{color:#999;font-size:.9rem;line-height:1.7}

/* ========== Community Section ========== */
.community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.community-card{background:rgba(20,20,35,.8);border-radius:12px;overflow:hidden;border:1px solid rgba(0,180,255,.1);transition:all .3s}
.community-card:hover{transform:translateY(-3px);border-color:rgba(0,180,255,.3)}
.community-card .card-img{height:180px;overflow:hidden}
.community-card .card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.community-card:hover .card-img img{transform:scale(1.05)}
.community-card .card-body{padding:20px}
.community-card .card-body h4{color:#fff;margin-bottom:8px;font-size:1rem}
.community-card .card-body p{color:#999;font-size:.9rem;line-height:1.6}
.community-card .card-stats{display:flex;gap:15px;margin-top:10px;color:#888;font-size:.8rem}

/* ========== Contact Section ========== */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.contact-info{background:rgba(20,20,35,.8);border-radius:12px;padding:30px;border:1px solid rgba(0,180,255,.1)}
.contact-info h4{color:#fff;font-size:1.2rem;margin-bottom:20px}
.contact-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:15px;color:#ccc;font-size:.95rem}
.contact-item .label{color:#00b4ff;font-weight:600;min-width:80px}
.azaacb63{display:flex;gap:20px;justify-content:center;flex-wrap:wrap}
.j7gq3{text-align:center}
.j7gq3 img{width:150px;height:150px;border-radius:10px;border:2px solid rgba(0,180,255,.2);margin-bottom:8px}
.j7gq3 p{color:#999;font-size:.85rem}

/* ========== How-To Guide ========== */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.howto-step{background:rgba(20,20,35,.8);border-radius:12px;padding:25px;text-align:center;border:1px solid rgba(0,180,255,.1);transition:all .3s}
.howto-step:hover{border-color:rgba(0,180,255,.3)}
.howto-step .step-num{width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,#0066ff,#00b4ff);display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.3rem;font-weight:700;margin:0 auto 15px}
.howto-step h4{color:#fff;margin-bottom:8px}
.howto-step p{color:#999;font-size:.9rem}

/* ========== Share Buttons ========== */
.3dd88us2{background:rgba(20,20,35,.5);padding:25px 0;text-align:center}
.221od{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:12px}
.share-btn{padding:8px 20px;border-radius:20px;font-size:.9rem;color:#fff;transition:all .3s;cursor:pointer;border:none}
.share-wechat{background:#07c160}
.share-weibo{background:#e6162d}
.share-douyin{background:#161823}
.share-bilibili{background:#fb7299}
.share-btn:hover{opacity:.85;transform:translateY(-2px)}

/* ========== Footer ========== */
.site-footer{background:rgba(5,5,10,.95);border-top:1px solid rgba(0,180,255,.1);padding:40px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer-col h4{color:#fff;font-size:1rem;margin-bottom:15px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:#00b4ff}
.footer-col p{color:#888;font-size:.9rem;line-height:1.7}
.footer-col a{display:block;color:#888;font-size:.9rem;padding:4px 0;transition:color .3s}
.footer-col a:hover{color:#00b4ff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.05);padding:20px 0;text-align:center;color:#666;font-size:.85rem}
.footer-bottom .update-time{margin-top:5px;color:#555}

/* ========== Breadcrumb ========== */
.breadcrumb{padding:15px 0;color:#888;font-size:.9rem}
.breadcrumb a{color:#00b4ff}
.breadcrumb span{margin:0 8px;color:#555}

/* ========== Page Header ========== */
.page-header{background:linear-gradient(135deg,rgba(0,20,40,.9),rgba(10,10,15,.95));padding:100px 0 40px;text-align:center;border-bottom:1px solid rgba(0,180,255,.1)}
.page-header h1{font-size:2.2rem;margin-bottom:10px;color:#fff}
.page-header p{color:#999;font-size:1rem}

/* ========== Responsive ========== */
@media(max-width:1024px){
.video-grid{grid-template-columns:repeat(3,1fr)}
.team-grid{grid-template-columns:repeat(2,1fr)}
.ai-features{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:repeat(2,1fr)}
.howto-steps{grid-template-columns:repeat(2,1fr)}
.partner-grid{grid-template-columns:repeat(4,1fr)}
}
@media(max-width:768px){
.banner-content h1{font-size:2rem}
.banner-content .subtitle{font-size:1rem}
.video-grid{grid-template-columns:repeat(2,1fr)}
.team-grid{grid-template-columns:1fr}
.ai-features{grid-template-columns:1fr}
.community-grid{grid-template-columns:1fr}
.review-grid{grid-template-columns:1fr}
.contact-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.howto-steps{grid-template-columns:1fr}
.partner-grid{grid-template-columns:repeat(3,1fr)}
.main-nav{display:none;position:absolute;top:70px;left:0;width:100%;background:rgba(10,10,15,.98);flex-direction:column;padding:20px;gap:5px}
.main-nav.show{display:flex}
.main-nav a{padding:12px 20px}
.mobile-menu-btn{display:block}
.banner{height:60vh;min-height:400px}
.section{padding:40px 0}
.category-tabs{gap:6px}
.category-tabs .tab{padding:6px 14px;font-size:.8rem}
}
@media(max-width:480px){
.video-grid{grid-template-columns:1fr}
.partner-grid{grid-template-columns:repeat(2,1fr)}
.banner-content h1{font-size:1.6rem}
.search-box input{padding:8px 15px}
}

/* ========== Lazy Load ========== */
img[data-src]{opacity:0;transition:opacity .5s}
img.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}

/* ========== MCP Frontend Placeholder ========== */
.r5r09p{background:rgba(20,20,35,.6);border:1px solid rgba(0,180,255,.15);border-radius:10px;padding:20px;margin-top:20px;text-align:center}
.r5r09p h5{color:#00b4ff;margin-bottom:10px}
.r5r09p p{color:#888;font-size:.85rem}