/* 黑丝 - 汽车改装视频社区 全站样式 */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;background:#0a0e1a;color:#e0e4ef;line-height:1.8}
a{color:#ff8c00;text-decoration:none;transition:color .3s}
a:hover{color:#ffa940}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
/* iuqsjo */
.n_y7zx9d{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}
/* 导航栏 */
.site-header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(10,14,26,.95);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,140,0,.15);transition:all .3s}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand-logo{display:flex;align-items:center;gap:10px}
.brand-logo img{width:42px;height:42px;border-radius:50%}
.brand-text{font-size:22px;font-weight:700;color:#fff;letter-spacing:1px}
.brand-text em{font-style:normal;color:#ff8c00}
.main-nav{display:flex;gap:24px;list-style:none}
.main-nav a{color:#c0c4d0;font-size:15px;font-weight:500;padding:6px 0;position:relative}
.main-nav a:hover,.main-nav a.active{color:#ff8c00}
.main-nav a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:#ff8c00;transition:width .3s}
.main-nav a:hover::after{width:100%}
.nav-toggle{display:none;cursor:pointer;font-size:24px;color:#fff}
/* 搜索框 */
.search-bar{background:rgba(255,140,0,.06);padding:12px 0;border-bottom:1px solid rgba(255,140,0,.1)}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:560px;width:100%}
.search-box input{flex:1;padding:10px 18px;border:1px solid rgba(255,140,0,.3);border-right:none;border-radius:25px 0 0 25px;background:rgba(255,255,255,.05);color:#fff;font-size:14px;outline:none}
.search-box input:focus{border-color:#ff8c00}
.search-box button{padding:10px 24px;background:#ff8c00;color:#fff;border:none;border-radius:0 25px 25px 0;cursor:pointer;font-size:14px;font-weight:600;transition:background .3s}
.search-box button:hover{background:#e67e00}
/* Banner */
.hero-banner{position:relative;height:520px;overflow:hidden;margin-top:68px;display:flex;align-items:center}
.hero-banner .bg-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.55)}
.hero-content{position:relative;z-index:2;text-align:center;width:100%;padding:0 20px}
.hero-content h1{font-size:42px;font-weight:800;color:#fff;margin-bottom:16px;text-shadow:0 2px 20px rgba(0,0,0,.6)}
.hero-content h1 span{color:#ff8c00}
.hero-content p{font-size:18px;color:#d0d4e0;max-width:700px;margin:0 auto 28px;text-shadow:0 1px 8px rgba(0,0,0,.5)}
.hero-btn{display:inline-block;padding:14px 36px;background:linear-gradient(135deg,#ff8c00,#e65100);color:#fff;border-radius:30px;font-size:16px;font-weight:600;transition:transform .3s,box-shadow .3s}
.hero-btn:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(255,140,0,.4);color:#fff}
/* 统计数据 */
.stats-bar{background:linear-gradient(135deg,#111830,#0d1225);padding:40px 0;border-bottom:1px solid rgba(255,140,0,.1)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.stat-item .stat-num{font-size:36px;font-weight:800;color:#ff8c00;display:block}
.stat-item .stat-label{font-size:14px;color:#8890a8}
/* 通用区块 */
.section{padding:60px 0}
.section-dark{background:#0d1225}
.section-alt{background:#111830}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:30px;font-weight:700;color:#fff;margin-bottom:10px}
.section-title h2 span{color:#ff8c00}
.section-title p{color:#8890a8;font-size:15px;max-width:600px;margin:0 auto}
/* 视频卡片 */
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-card{background:#151c32;border-radius:12px;overflow:hidden;transition:transform .3s,box-shadow .3s;cursor:pointer}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 35px rgba(255,140,0,.15)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.video-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.08)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:60px;height:60px;background:rgba(255,140,0,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:transform .3s;z-index:2}
.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:4px}
.video-card:hover .play-btn{transform:translate(-50%,-50%) scale(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;z-index:2}
.video-info{padding:16px}
.video-info h3{font-size:16px;font-weight:600;color:#e0e4ef;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:16px;font-size:12px;color:#6b7394}
.video-meta span{display:flex;align-items:center;gap:4px}
/* 模块卡片 */
.module-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.module-card{background:#151c32;border-radius:12px;padding:28px;text-align:center;border:1px solid rgba(255,140,0,.08);transition:all .3s}
.module-card:hover{border-color:rgba(255,140,0,.3);transform:translateY(-4px)}
.module-icon{font-size:40px;margin-bottom:14px}
.module-card h3{font-size:18px;color:#fff;margin-bottom:10px}
.module-card p{font-size:14px;color:#8890a8;line-height:1.7}
/* 专家展示 */
.expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#151c32;border-radius:12px;padding:24px;text-align:center;border:1px solid rgba(255,140,0,.08);transition:all .3s}
.expert-card:hover{border-color:#ff8c00}
.expert-avatar{width:80px;height:80px;border-radius:50%;margin:0 auto 14px;background:#1a2240;display:flex;align-items:center;justify-content:center;font-size:32px;border:2px solid #ff8c00}
.expert-card h4{font-size:16px;color:#fff;margin-bottom:4px}
.expert-card .expert-role{color:#ff8c00;font-size:13px;margin-bottom:8px}
.expert-card p{font-size:13px;color:#8890a8;line-height:1.6}
.expert-btn{display:inline-block;margin-top:12px;padding:6px 18px;border:1px solid #ff8c00;color:#ff8c00;border-radius:20px;font-size:13px;transition:all .3s}
.expert-btn:hover{background:#ff8c00;color:#fff}
/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#151c32;border-radius:10px;margin-bottom:12px;overflow:hidden;border:1px solid rgba(255,140,0,.08)}
.faq-q{padding:18px 24px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#e0e4ef;transition:color .3s}
.faq-q:hover{color:#ff8c00}
.faq-q::after{content:'+';font-size:20px;color:#ff8c00;transition:transform .3s}
.faq-item.active .faq-q::after{transform:rotate(45deg)}
.faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .3s;color:#8890a8;font-size:14px;line-height:1.8}
.faq-item.active .faq-a{padding:0 24px 18px;max-height:300px}
/* 用户评论 */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.review-card{background:#151c32;border-radius:12px;padding:24px;border:1px solid rgba(255,140,0,.08)}
.review-header{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.review-avatar{width:44px;height:44px;border-radius:50%;background:#1a2240;display:flex;align-items:center;justify-content:center;font-size:18px;color:#ff8c00}
.review-name{font-weight:600;color:#e0e4ef;font-size:15px}
.review-stars{color:#ff8c00;font-size:13px;margin-top:2px}
.review-text{font-size:14px;color:#8890a8;line-height:1.8}
/* 合作伙伴 */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;padding:20px 0}
.partner-item{background:#151c32;border-radius:10px;padding:16px 28px;font-size:15px;font-weight:600;color:#8890a8;border:1px solid rgba(255,140,0,.08);transition:all .3s}
.partner-item:hover{border-color:#ff8c00;color:#ff8c00}
/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.contact-info{background:#151c32;border-radius:12px;padding:30px}
.contact-info h3{font-size:20px;color:#fff;margin-bottom:18px;padding-bottom:12px;border-bottom:1px solid rgba(255,140,0,.15)}
.contact-row{display:flex;gap:10px;margin-bottom:14px;font-size:14px;color:#c0c4d0}
.contact-row strong{color:#ff8c00;min-width:80px}
.qr-codes{display:flex;gap:20px;margin-top:16px}
.qr-item{text-align:center}
.qr-item img{width:80px;height:80px;border-radius:8px;border:1px solid rgba(255,140,0,.2)}
.qr-item span{display:block;font-size:12px;color:#6b7394;margin-top:6px}
/* 社交分享 */
.share-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.share-btn{padding:10px 22px;border-radius:25px;font-size:14px;font-weight:500;transition:all .3s;border:1px solid rgba(255,140,0,.2);color:#c0c4d0}
.share-btn:hover{background:#ff8c00;color:#fff;border-color:#ff8c00}
/* 页脚 */
.site-footer{background:#060a14;padding:40px 0 20px;border-top:1px solid rgba(255,140,0,.1)}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand img{width:36px;height:36px;border-radius:50%}
.footer-brand span{font-size:20px;font-weight:700;color:#fff}
.footer-desc{font-size:13px;color:#6b7394;line-height:1.8}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:14px;padding-bottom:8px;border-bottom:1px solid rgba(255,140,0,.1)}
.footer-col a{display:block;font-size:13px;color:#6b7394;padding:4px 0;transition:color .3s}
.footer-col a:hover{color:#ff8c00}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(255,140,0,.06);font-size:13px;color:#4a5270}
/* 面包屑 */
.breadcrumb{padding:14px 0;font-size:13px;color:#6b7394}
.breadcrumb a{color:#8890a8}
.breadcrumb a:hover{color:#ff8c00}
.breadcrumb span{margin:0 6px;color:#4a5270}
/* 内页通用 */
.page-hero{height:280px;position:relative;display:flex;align-items:center;margin-top:68px;overflow:hidden}
.page-hero .bg-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.4)}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{font-size:34px;font-weight:700;color:#fff}
.page-hero p{font-size:16px;color:#c0c4d0;margin-top:10px}
.page-content{padding:50px 0}
/* 响应式 */
@media(max-width:1024px){
.video-grid,.module-grid{grid-template-columns:repeat(2,1fr)}
.expert-grid{grid-template-columns:repeat(2,1fr)}
.footer-top{grid-template-columns:1fr 1fr}
.stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
.main-nav{display:none;position:absolute;top:68px;left:0;width:100%;background:#0a0e1a;flex-direction:column;padding:20px;gap:16px;border-top:1px solid rgba(255,140,0,.15)}
.main-nav.active{display:flex}
.nav-toggle{display:block}
.hero-banner{height:400px}
.hero-content h1{font-size:28px}
.hero-content p{font-size:15px}
.video-grid,.module-grid,.review-grid,.contact-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:repeat(2,1fr)}
.footer-top{grid-template-columns:1fr}
.stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
.stat-item .stat-num{font-size:28px}
}
@media(max-width:480px){
.expert-grid{grid-template-columns:1fr}
.hero-banner{height:350px}
.hero-content h1{font-size:24px}
.section{padding:40px 0}
}