/* 91修车改装视频社区 - 全站样式表 */
/* bsrdn.cn */

/* ========== 基础重置 ========== */
*,*::before,*::after{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;color:#333;background:#f8f9fa;line-height:1.8;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:color .3s}
a:hover{color:#e63946}
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:#1a1a2e}

/* ========== 通用容器 ========== */
.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:#1a1a2e;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:3px;background:linear-gradient(90deg,#e63946,#ff6b35);margin:10px auto 0}
.section-title p{color:#666;font-size:1rem;max-width:600px;margin:0 auto}

/* ========== 顶部导航 ========== */
.header{background:#1a1a2e;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:0 20px;max-width:1200px;margin:0 auto;height:70px}
.logo{display:flex;align-items:center;gap:10px}
.logo img{height:45px;width:auto}
.logo span{font-size:1.5rem;font-weight:800;color:#fff;letter-spacing:2px}
.nav{display:flex;align-items:center;gap:0}
.nav a{color:#ccc;padding:10px 15px;font-size:.9rem;transition:all .3s;position:relative}
.nav a:hover,.nav a.active{color:#e63946}
.nav a::after{content:'';position:absolute;bottom:0;left:50%;width:0;height:2px;background:#e63946;transition:all .3s;transform:translateX(-50%)}
.nav a:hover::after,.nav a.active::after{width:80%}
.mobile-menu{display:none;cursor:pointer;font-size:1.5rem;color:#fff}

/* ========== 搜索框 ========== */
.search-bar{background:#16213e;padding:15px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%;background:#fff;border-radius:25px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.1)}
.search-box input{flex:1;border:none;padding:12px 20px;font-size:1rem;outline:none;color:#333}
.search-box button{background:linear-gradient(135deg,#e63946,#ff6b35);color:#fff;border:none;padding:12px 25px;cursor:pointer;font-size:1rem;transition:opacity .3s}
.search-box button:hover{opacity:.9}

/* ========== Banner ========== */
.banner{position:relative;height:500px;overflow:hidden;background:#1a1a2e}
.banner img{width:100%;height:100%;object-fit:cover;opacity:.5}
.banner::after{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(180deg,rgba(0,0,0,.55) 0%,rgba(0,0,0,.45) 40%,rgba(0,0,0,.6) 100%);z-index:1}
.banner-content{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;color:#fff;z-index:2;width:90%;max-width:800px}
.banner-content h1{font-size:2.8rem;margin-bottom:15px;text-shadow:2px 2px 15px rgba(0,0,0,.8),0 0 30px rgba(0,0,0,.5);color:#fff}
.banner-content h1 span{color:#ff4d5a;text-shadow:2px 2px 15px rgba(0,0,0,.8)}
.banner-content p{font-size:1.2rem;margin-bottom:25px;text-shadow:1px 1px 8px rgba(0,0,0,.8),0 0 20px rgba(0,0,0,.4);line-height:1.8;color:#fff}
.banner-content .btn-group{display:flex;gap:15px;justify-content:center;flex-wrap:wrap}
.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,#e63946,#ff6b35);color:#fff}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 5px 20px rgba(230,57,70,.4)}
.btn-outline{border:2px solid #fff;color:#fff;background:transparent}
.btn-outline:hover{background:#fff;color:#1a1a2e}

/* ========== 视频卡片 ========== */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px}
.video-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:all .3s;position:relative}
.video-card:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(0,0,0,.15)}
.video-thumb{position:relative;padding-top:56.25%;overflow:hidden;background:#000}
.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)}
.video-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:60px;height:60px;background:rgba(230,57,70,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:all .3s;cursor:pointer;z-index:3}
.video-card:hover .video-play-btn{opacity:1}
.video-play-btn::after{content:'';display:block;width:0;height:0;border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:4px}
.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;z-index:2}
.video-info{padding:15px}
.video-info h3{font-size:1rem;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.4}
.video-meta{display:flex;align-items:center;gap:15px;color:#999;font-size:.85rem}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tag{display:inline-block;background:#f0f0f0;color:#666;padding:2px 10px;border-radius:12px;font-size:.75rem;margin-top:8px}
.video-tag.hot{background:#fff0f0;color:#e63946}

/* ========== 修车传媒模块 ========== */
.media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.media-card{background:#fff;border-radius:12px;padding:30px;text-align:center;transition:all .3s;border:1px solid #eee}
.media-card:hover{border-color:#e63946;box-shadow:0 5px 20px rgba(230,57,70,.1)}
.media-card .icon{font-size:2.5rem;margin-bottom:15px}
.media-card h4{font-size:1.1rem;margin-bottom:8px;color:#1a1a2e}
.media-card p{color:#666;font-size:.9rem}

/* ========== AI赋能模块 ========== */
.ai-section{background:linear-gradient(135deg,#1a1a2e 0%,#16213e 100%);color:#fff}
.ai-section .section-title h2{color:#fff}
.ai-section .section-title p{color:#aaa}
.ai-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:25px}
.ai-card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:30px;transition:all .3s}
.ai-card:hover{background:rgba(255,255,255,.1);border-color:#e63946}
.ai-card .icon{font-size:2rem;margin-bottom:15px;color:#e63946}
.ai-card h4{font-size:1.1rem;margin-bottom:10px}
.ai-card p{color:#aaa;font-size:.9rem}

/* ========== 专家展示 ========== */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px}
.expert-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:all .3s;text-align:center}
.expert-card:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(0,0,0,.15)}
.expert-card img{width:100%;height:300px;object-fit:cover}
.expert-card .info{padding:20px}
.expert-card h4{font-size:1.1rem;margin-bottom:5px}
.expert-card .role{color:#e63946;font-size:.9rem;margin-bottom:10px}
.expert-card p{color:#666;font-size:.85rem;margin-bottom:15px}
.expert-card .social{display:flex;justify-content:center;gap:10px}
.expert-card .social a{display:inline-flex;align-items:center;justify-content:center;width:35px;height:35px;border-radius:50%;background:#f0f0f0;color:#666;transition:all .3s;font-size:.9rem}
.expert-card .social a:hover{background:#e63946;color:#fff}
.expert-btns{display:flex;gap:10px;justify-content:center;margin-top:10px}
.expert-btns .btn{padding:8px 18px;font-size:.85rem}

/* ========== 合作品牌 ========== */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.brand-wall .brand-item{width:120px;height:60px;background:#fff;border-radius:8px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 10px rgba(0,0,0,.05);padding:10px;transition:all .3s;font-weight:700;color:#999;font-size:.9rem}
.brand-wall .brand-item:hover{box-shadow:0 4px 20px rgba(0,0,0,.1);transform:scale(1.05)}

/* ========== FAQ ========== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:12px;margin-bottom:15px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.05)}
.faq-question{padding:20px 25px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#1a1a2e;transition:background .3s}
.faq-question:hover{background:#f8f9fa}
.faq-question .arrow{transition:transform .3s;font-size:1.2rem;color:#e63946}
.faq-item.active .faq-question .arrow{transform:rotate(180deg)}
.faq-answer{padding:0 25px;max-height:0;overflow:hidden;transition:all .3s;color:#666;line-height:1.8}
.faq-item.active .faq-answer{padding:0 25px 20px;max-height:500px}

/* ========== 用户评论 ========== */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px}
.review-card{background:#fff;border-radius:12px;padding:25px;box-shadow:0 4px 15px rgba(0,0,0,.08);position:relative}
.review-card::before{content:'\201C';position:absolute;top:10px;left:15px;font-size:3rem;color:#e63946;opacity:.2;font-family:serif}
.review-card .stars{color:#ffc107;margin-bottom:10px;font-size:1.1rem}
.review-card p{color:#555;font-size:.95rem;margin-bottom:15px;line-height:1.7}
.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,#e63946,#ff6b35);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.9rem}
.review-card .reviewer .name{font-weight:600;font-size:.9rem}
.review-card .reviewer .date{color:#999;font-size:.8rem}

/* ========== 联系我们 ========== */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:25px}
.contact-card{background:#fff;border-radius:12px;padding:25px;text-align:center;box-shadow:0 4px 15px rgba(0,0,0,.08)}
.contact-card .icon{font-size:2rem;color:#e63946;margin-bottom:15px}
.contact-card h4{margin-bottom:8px;color:#1a1a2e}
.contact-card p{color:#666;font-size:.9rem}

/* ========== 社交分享 ========== */
.share-bar{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.share-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:20px;font-size:.85rem;color:#fff;transition:all .3s;cursor:pointer}
.share-btn:hover{transform:translateY(-2px);opacity:.9}
.iru82tv{background:#07c160}
.fvdm9{background:#e6162d}
.dxr5q{background:#161823}
.d5vbuh{background:#00a1d6}

/* ========== 页脚 ========== */
.footer{background:#1a1a2e;color:#aaa;padding:50px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;margin-bottom:30px}
.footer-col h4{color:#fff;margin-bottom:15px;font-size:1rem}
.footer-col p,.footer-col a{color:#aaa;font-size:.9rem;line-height:2}
.footer-col a:hover{color:#e63946}
.footer-col .logo-footer{display:flex;align-items:center;gap:10px;margin-bottom:15px}
.footer-col .logo-footer img{height:40px}
.footer-col .logo-footer span{color:#fff;font-size:1.3rem;font-weight:700}
.footer-qrcode{display:flex;gap:15px;margin-top:10px}
.footer-qrcode .qr-item{text-align:center}
.footer-qrcode .qr-item .3iaby{width:100px;height:100px;background:#2a2a4a;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#666;font-size:.75rem;margin-bottom:5px}
.footer-qrcode .qr-item span{font-size:.8rem;color:#888}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:.85rem}
.footer-bottom a{color:#e63946}

/* ========== 面包屑 ========== */
.breadcrumb{background:#fff;padding:15px 0;border-bottom:1px solid #eee}
.breadcrumb .container{display:flex;align-items:center;gap:8px;font-size:.9rem;color:#666}
.breadcrumb a{color:#e63946}
.breadcrumb span{color:#999}

/* ========== 内页通用 ========== */
.page-banner{position:relative;height:300px;overflow:hidden;background:#1a1a2e}
.page-banner img{width:100%;height:100%;object-fit:cover;opacity:.45}
.page-banner::after{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(180deg,rgba(0,0,0,.5) 0%,rgba(0,0,0,.4) 50%,rgba(0,0,0,.55) 100%);z-index:1}
.page-banner .overlay{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center;color:#fff;z-index:2}
.page-banner .overlay h1{font-size:2.2rem;margin-bottom:10px;text-shadow:2px 2px 10px rgba(0,0,0,.7);color:#fff}
.page-banner .overlay p{font-size:1.1rem;color:rgba(255,255,255,.9);text-shadow:1px 1px 5px rgba(0,0,0,.5)}
.page-content{padding:40px 0}

/* ========== 社区模块 ========== */
.community-tabs{display:flex;gap:10px;margin-bottom:30px;flex-wrap:wrap;justify-content:center}
.community-tabs .tab{padding:8px 20px;border-radius:20px;background:#f0f0f0;color:#666;cursor:pointer;transition:all .3s;font-size:.9rem}
.community-tabs .tab.active,.community-tabs .tab:hover{background:#e63946;color:#fff}
.topic-list{display:flex;flex-direction:column;gap:15px}
.topic-item{background:#fff;border-radius:12px;padding:20px;display:flex;gap:15px;box-shadow:0 2px 10px rgba(0,0,0,.05);transition:all .3s}
.topic-item:hover{box-shadow:0 4px 20px rgba(0,0,0,.1)}
.topic-item .avatar{width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,#e63946,#ff6b35);flex-shrink:0;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700}
.topic-item .content h4{margin-bottom:5px;font-size:1rem}
.topic-item .content p{color:#666;font-size:.9rem;margin-bottom:8px}
.topic-item .content .meta{display:flex;gap:15px;color:#999;font-size:.8rem}

/* ========== 配件模块 ========== */
.parts-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:25px}
.part-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 15px rgba(0,0,0,.08);transition:all .3s}
.part-card:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(0,0,0,.15)}
.part-card img{width:100%;height:200px;object-fit:cover}
.part-card .info{padding:15px}
.part-card .info h4{margin-bottom:5px}
.part-card .info .price{color:#e63946;font-size:1.2rem;font-weight:700}
.part-card .info p{color:#666;font-size:.85rem;margin-top:5px}

/* ========== How-To指南 ========== */
.howto-steps{max-width:800px;margin:0 auto}
.howto-step{display:flex;gap:20px;margin-bottom:30px;align-items:flex-start}
.howto-step .step-num{width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,#e63946,#ff6b35);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:700;flex-shrink:0}
.howto-step .step-content h4{margin-bottom:5px;font-size:1.1rem}
.howto-step .step-content p{color:#666;font-size:.95rem}

/* ========== 数据统计 ========== */
.stats-bar{background:linear-gradient(135deg,#e63946,#ff6b35);padding:50px 0;color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-item{padding:15px 10px}
.stat-item .num{font-size:2.8rem;font-weight:800;color:#fff;text-shadow:1px 1px 5px rgba(0,0,0,.2);letter-spacing:1px}
.stat-item .label{font-size:1rem;color:#fff;opacity:.95;margin-top:8px;text-shadow:1px 1px 3px rgba(0,0,0,.15)}

/* ========== MCP服务前端 ========== */
.0e423p1{background:#f8f9fa;border:1px solid #eee;border-radius:12px;padding:20px;margin-top:20px}
.0e423p1 h5{margin-bottom:10px;color:#1a1a2e}
.0e423p1 .gp2zbkc2{display:flex;gap:10px}
.0e423p1 input{flex:1;padding:10px 15px;border:1px solid #ddd;border-radius:8px;font-size:.9rem;outline:none}
.0e423p1 input:focus{border-color:#e63946}
.0e423p1 button{padding:10px 20px;background:#e63946;color:#fff;border:none;border-radius:8px;cursor:pointer;font-size:.9rem;transition:opacity .3s}
.0e423p1 button:hover{opacity:.9}
.vdndlo3{margin-top:10px;padding:10px;background:#fff;border-radius:8px;font-size:.85rem;color:#666;min-height:40px;border:1px solid #eee}

/* ========== 响应式设计 ========== */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .media-grid{grid-template-columns:repeat(2,1fr)}
  .ai-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:15px}
}
@media(max-width:768px){
  .header-inner{height:60px}
  .nav{display:none;position:absolute;top:60px;left:0;right:0;background:#1a1a2e;flex-direction:column;padding:20px;box-shadow:0 5px 20px rgba(0,0,0,.3)}
  .nav.active{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.1)}
  .mobile-menu{display:block}
  .banner{height:400px}
  .banner-content h1{font-size:1.8rem}
  .banner-content p{font-size:1rem}
  .section{padding:40px 0}
  .section-title h2{font-size:1.5rem}
  .video-grid{grid-template-columns:repeat(2,1fr);gap:15px}
  .media-grid{grid-template-columns:1fr}
  .ai-grid{grid-template-columns:1fr}
  .expert-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .page-banner{height:200px}
  .page-banner .overlay h1{font-size:1.5rem}
}
@media(max-width:480px){
  .video-grid{grid-template-columns:1fr}
  .banner{height:350px}
  .banner-content h1{font-size:1.5rem}
  .btn{padding:10px 20px;font-size:.9rem}
  .stats-grid{grid-template-columns:1fr}
}

/* ========== 专家资质徽章 ========== */
.expert-credentials{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin:10px 0}
.credential-badge{display:inline-block;background:#fff0f0;color:#e63946;padding:3px 12px;border-radius:15px;font-size:.75rem;border:1px solid #fdd}

/* ========== 视频描述 ========== */
.video-desc{color:#888;font-size:.85rem;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ========== MCP暗色主题 ========== */
.ai-section .0e423p1{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.1)}
.ai-section .0e423p1 h5{color:#fff}
.ai-section .0e423p1 input{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2);color:#fff}
.ai-section .0e423p1 input::placeholder{color:#888}
.ai-section .vdndlo3{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.1);color:#aaa}

/* ========== 动画 ========== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.fade-in{opacity:1;transform:translateY(0);transition:all .6s ease}
.js-loaded .fade-in{opacity:0;transform:translateY(30px)}
.js-loaded .fade-in.visible{opacity:1;transform:translateY(0)}

/* ========== 懒加载占位 ========== */
.lazy{opacity:0;transition:opacity .5s}
.lazy.loaded{opacity:1}

/* ========== 返回顶部 ========== */
.back-to-top{position:fixed;bottom:30px;right:30px;width:45px;height:45px;background:#e63946;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;visibility:hidden;transition:all .3s;z-index:999;font-size:1.2rem;border:none;box-shadow:0 2px 10px rgba(230,57,70,.3)}
.back-to-top.visible{opacity:1;visibility:visible}
.back-to-top:hover{transform:translateY(-3px);box-shadow:0 5px 20px rgba(230,57,70,.5)}