/* 91修车改装视频社区 - 原创CSS样式 */
/* 配色：深灰#1a1a2e 主色#e94560 辅色#0f3460 亮色#16213e 橙色#f47b20 */
*{margin:0;padding:0;box-sizing:border-box}
:root{--bg-dark:#0d0d1a;--bg-card:#1a1a2e;--bg-section:#12121f;--primary:#e94560;--secondary:#0f3460;--accent:#f47b20;--text:#e0e0e0;--text-muted:#8a8a9a;--border:#2a2a3e;--gradient:linear-gradient(135deg,#e94560,#f47b20)}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI','Microsoft YaHei','PingFang SC',sans-serif;background:var(--bg-dark);color:var(--text);line-height:1.7;overflow-x:hidden}
a{color:var(--primary);text-decoration:none;transition:color .3s}
a:hover{color:var(--accent)}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 导航栏 */
.site-nav{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(13,13,26,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);padding:0 20px;transition:all .3s}
.site-nav .nav-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:64px}
.site-nav .nav-logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:#fff}
.site-nav .nav-logo img{height:36px;width:auto;border-radius:4px}
.site-nav .nav-links{display:flex;gap:24px;list-style:none}
.site-nav .nav-links a{color:var(--text);font-size:15px;font-weight:500;padding:6px 0;position:relative}
.site-nav .nav-links a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--gradient);transition:width .3s}
.site-nav .nav-links a:hover{color:#fff}
.site-nav .nav-links a:hover::after{width:100%}
.nav-search{position:relative}
.nav-search input{background:rgba(255,255,255,.08);border:1px solid var(--border);border-radius:20px;padding:7px 36px 7px 14px;color:#fff;font-size:14px;width:180px;outline:none;transition:all .3s}
.nav-search input:focus{border-color:var(--primary);width:220px;background:rgba(255,255,255,.12)}
.nav-search button{position:absolute;right:8px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--text-muted);cursor:pointer;font-size:16px}
.mobile-toggle{display:none;background:none;border:none;color:#fff;font-size:24px;cursor:pointer}

/* Banner */
.hero-banner{position:relative;height:520px;overflow:hidden;margin-top:64px}
.hero-banner .banner-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.55)}
.hero-banner .banner-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,13,26,.3) 0%,rgba(13,13,26,.85) 100%)}
.hero-banner .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}
.hero-banner h1{font-size:42px;font-weight:800;margin-bottom:16px;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-banner .banner-desc{font-size:18px;color:var(--text-muted);max-width:700px;margin-bottom:28px;line-height:1.8}
.hero-banner .banner-tags{display:flex;gap:12px;flex-wrap:wrap;justify-content:center}
.hero-banner .banner-tags span{background:rgba(233,69,96,.15);border:1px solid rgba(233,69,96,.3);color:var(--primary);padding:6px 16px;border-radius:20px;font-size:13px}

/* 通用板块 */
.section{padding:60px 0}
.section-alt{background:var(--bg-section)}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:30px;font-weight:700;margin-bottom:10px;color:#fff}
.section-title h2 .hl{color:var(--primary)}
.section-title p{color:var(--text-muted);font-size:15px}
.section-title .divider{width:60px;height:3px;background:var(--gradient);margin:12px auto 0;border-radius:2px}

/* 视频卡片 */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.video-card{background:var(--bg-card);border-radius:12px;overflow:hidden;border:1px solid var(--border);transition:transform .3s,box-shadow .3s}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 32px rgba(233,69,96,.15)}
.video-card .thumb{position:relative;padding-top:56.25%;overflow:hidden;cursor:pointer}
.video-card .thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .thumb img{transform:scale(1.08)}
.video-card .play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);width:56px;height:56px;background:rgba(233,69,96,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:transform .3s;pointer-events:none}
.video-card .play-btn::after{content:'';border:solid #fff;border-width:0 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:4px}
.video-card:hover .play-btn{transform:translate(-50%,-50%) scale(1)}
.video-card .thumb .duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.8);color:#fff;font-size:12px;padding:2px 8px;border-radius:4px}
.video-card .card-body{padding:14px 16px}
.video-card .card-body h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:8px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-card .card-meta{display:flex;gap:14px;color:var(--text-muted);font-size:12px}
.video-card .card-meta span{display:flex;align-items:center;gap:4px}

/* 服务模块 */
.service-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.service-item{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:28px 24px;text-align:center;transition:all .3s}
.service-item:hover{border-color:var(--primary);box-shadow:0 8px 24px rgba(233,69,96,.1)}
.service-item .icon{width:56px;height:56px;background:var(--gradient);border-radius:14px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:26px}
.service-item h3{font-size:17px;font-weight:600;color:#fff;margin-bottom:8px}
.service-item p{font-size:14px;color:var(--text-muted);line-height:1.7}

/* 专家卡片 */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.expert-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;overflow:hidden;text-align:center;transition:all .3s}
.expert-card:hover{border-color:var(--accent);transform:translateY(-4px)}
.expert-card .avatar{width:100%;aspect-ratio:1;overflow:hidden}
.expert-card .avatar img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.expert-card:hover .avatar img{transform:scale(1.06)}
.expert-card .info{padding:18px 16px}
.expert-card .info h3{font-size:17px;font-weight:600;color:#fff;margin-bottom:4px}
.expert-card .info .role{color:var(--primary);font-size:13px;margin-bottom:10px}
.expert-card .info p{font-size:13px;color:var(--text-muted);line-height:1.6}
.expert-card .actions{padding:0 16px 18px;display:flex;gap:10px;justify-content:center}
.expert-card .actions a{padding:6px 16px;border-radius:20px;font-size:13px;border:1px solid var(--border);color:var(--text);transition:all .3s}
.expert-card .actions a:hover{border-color:var(--primary);color:var(--primary)}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:10px;margin-bottom:12px;overflow:hidden}
.faq-item .faq-q{padding:16px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#fff;font-size:15px;transition:background .3s}
.faq-item .faq-q:hover{background:rgba(233,69,96,.05)}
.faq-item .faq-q .arrow{transition:transform .3s;color:var(--primary)}
.faq-item.active .faq-q .arrow{transform:rotate(180deg)}
.faq-item .faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 20px}
.faq-item.active .faq-a{max-height:300px;padding:0 20px 16px}
.faq-item .faq-a p{color:var(--text-muted);font-size:14px;line-height:1.8}

/* 用户评价 */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px}
.review-card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:24px}
.review-card .stars{color:var(--accent);font-size:16px;margin-bottom:10px}
.review-card .review-text{font-size:14px;color:var(--text);line-height:1.8;margin-bottom:14px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:10px}
.review-card .reviewer .avatar-sm{width:36px;height:36px;border-radius:50%;background:var(--gradient);display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px;font-weight:700}
.review-card .reviewer .name{font-size:13px;color:#fff;font-weight:600}
.review-card .reviewer .date{font-size:12px;color:var(--text-muted)}

/* 合作品牌墙 */
.brand-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center}
.brand-wall .brand-item{background:var(--bg-card);border:1px solid var(--border);border-radius:10px;padding:16px 28px;font-size:15px;font-weight:600;color:var(--text-muted);transition:all .3s}
.brand-wall .brand-item:hover{border-color:var(--accent);color:var(--accent)}

/* 页脚 */
.site-footer{background:var(--bg-card);border-top:1px solid var(--border);padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:32px;margin-bottom:32px}
.footer-col h4{font-size:16px;font-weight:600;color:#fff;margin-bottom:14px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:var(--gradient)}
.footer-col p,.footer-col a{font-size:14px;color:var(--text-muted);display:block;margin-bottom:8px;line-height:1.7}
.footer-col a:hover{color:var(--primary)}
.footer-col .qr-img{width:120px;border-radius:8px;border:1px solid var(--border)}
.footer-bottom{text-align:center;padding-top:24px;border-top:1px solid var(--border);font-size:13px;color:var(--text-muted)}
.footer-bottom .footer-logo{display:flex;align-items:center;justify-content:center;gap:8px;margin-bottom:10px}
.footer-bottom .footer-logo img{height:28px}

/* 面包屑 */
.breadcrumb{padding:16px 0;font-size:13px;color:var(--text-muted)}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{margin:0 6px}

/* 内页通用 */
.page-header{padding:100px 0 40px;text-align:center;background:var(--bg-section)}
.page-header h1{font-size:32px;font-weight:700;color:#fff;margin-bottom:10px}
.page-header p{color:var(--text-muted);font-size:15px}
.page-content{padding:40px 0 60px}
.page-content p{font-size:15px;color:var(--text);line-height:1.9;margin-bottom:16px}
.page-content h2{font-size:24px;font-weight:700;color:#fff;margin:32px 0 16px}
.page-content h3{font-size:20px;font-weight:600;color:#fff;margin:24px 0 12px}

/* 社交分享 */
.share-bar{display:flex;gap:12px;justify-content:center;padding:20px 0}
.share-bar a{width:40px;height:40px;border-radius:50%;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:16px;transition:all .3s}
.share-bar a:hover{border-color:var(--primary);color:var(--primary);background:rgba(233,69,96,.1)}

/* 按钮 */
.btn{display:inline-block;padding:10px 28px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .3s;border:none}
.btn-primary{background:var(--gradient);color:#fff}
.btn-primary:hover{opacity:.9;transform:translateY(-2px);box-shadow:0 6px 20px rgba(233,69,96,.3)}
.btn-outline{border:1px solid var(--border);color:var(--text);background:transparent}
.btn-outline:hover{border-color:var(--primary);color:var(--primary)}

/* 干扰标签隐藏 */
.dz-noise{position:absolute;left:-9999px;top:-9999px;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none}

/* 响应式 */
@media(max-width:768px){
.site-nav .nav-links{display:none;position:absolute;top:64px;left:0;width:100%;background:rgba(13,13,26,.98);flex-direction:column;padding:20px;gap:16px;border-bottom:1px solid var(--border)}
.site-nav .nav-links.active{display:flex}
.mobile-toggle{display:block}
.nav-search{display:none}
.hero-banner{height:400px}
.hero-banner h1{font-size:28px}
.hero-banner .banner-desc{font-size:15px}
.section{padding:40px 0}
.section-title h2{font-size:24px}
.video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.service-grid{grid-template-columns:1fr 1fr;gap:16px}
.expert-grid{grid-template-columns:1fr 1fr;gap:16px}
.review-grid{grid-template-columns:1fr;gap:16px}
.footer-grid{grid-template-columns:1fr 1fr;gap:24px}
}
@media(max-width:480px){
.service-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:1fr}
.hero-banner{height:340px}
.hero-banner h1{font-size:24px}
}