/* ============================================
   涩里番 视频传媒 - 主样式表
   品牌：涩里番 | 域名：dldzjs.cn
   修车改装视频社区 - 迈凯伦风格设计
   ============================================ */

/* CSS Reset & Base */
*,*::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:#e0e0e0;background:#0a0a0f;line-height:1.8;overflow-x:hidden}
a{color:#00b4ff;text-decoration:none;transition:color .3s}
a:hover{color:#ff6b00}
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}
.container-fluid{max-width:1400px;margin:0 auto;padding:0 20px}

/* Header & Navigation */
.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(255,107,0,.2);transition:all .3s}
.site-header.scrolled{background:rgba(10,10,15,.98);box-shadow:0 2px 20px rgba(0,0,0,.5)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;max-width:1400px;margin:0 auto}
.logo{display:flex;align-items:center;gap:10px}
.logo img{height:50px;width:auto}
.logo-text{font-size:1.4rem;font-weight:800;color:#ff6b00;letter-spacing:2px}
.logo-text span{color:#00b4ff}

.main-nav{display:flex;align-items:center;gap:5px}
.main-nav a{padding:8px 14px;font-size:.9rem;color:#ccc;border-radius:6px;transition:all .3s;white-space:nowrap}
.main-nav a:hover,.main-nav a.active{color:#ff6b00;background:rgba(255,107,0,.1)}

.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:10px}
.nav-toggle span{width:25px;height:2px;background:#fff;transition:all .3s}

/* Search Bar */
.search-bar{padding:12px 20px;background:rgba(20,20,30,.8);border-bottom:1px solid rgba(255,255,255,.05)}
.search-bar .container{display:flex;justify-content:center}
.search-box{display:flex;max-width:600px;width:100%}
.search-box input{flex:1;padding:10px 18px;background:rgba(255,255,255,.08);border:1px solid rgba(255,107,0,.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:#ff6b00}
.search-box input::placeholder{color:#666}
.search-box button{padding:10px 24px;background:linear-gradient(135deg,#ff6b00,#ff8c00);border:none;border-radius:0 25px 25px 0;color:#fff;font-size:.95rem;cursor:pointer;transition:all .3s;white-space:nowrap}
.search-box button:hover{background:linear-gradient(135deg,#ff8c00,#ffaa00)}

/* Banner / Hero */
.hero-banner{position:relative;height:70vh;min-height:500px;overflow:hidden;margin-top:70px}
.hero-banner .hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;background-repeat:no-repeat}
.hero-banner .hero-overlay{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%)}
.hero-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-content h1{font-size:3rem;margin-bottom:15px;background:linear-gradient(135deg,#ff6b00,#ffaa00);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-content h2{font-size:1.5rem;color:#ccc;margin-bottom:10px;font-weight:400}
.hero-content p{font-size:1.1rem;color:#999;max-width:700px;margin-bottom:25px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.hero-tags span{padding:6px 16px;background:rgba(255,107,0,.15);border:1px solid rgba(255,107,0,.3);border-radius:20px;font-size:.85rem;color:#ff8c00}

/* Section Common */
.section{padding:60px 0}
.section-dark{background:#0d0d14}
.section-darker{background:#080810}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;margin-bottom:10px;color:#fff}
.section-title h2 span{color:#ff6b00}
.section-title h3{font-size:1.3rem;color:#888;font-weight:400}
.section-title p{color:#777;font-size:.95rem;margin-top:8px}

/* Video Card Grid */
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:25px}
.video-card{background:#12121a;border-radius:12px;overflow:hidden;transition:all .4s;border:1px solid rgba(255,255,255,.05);cursor:pointer}
.video-card:hover{transform:translateY(-5px);border-color:rgba(255,107,0,.3);box-shadow:0 10px 30px rgba(255,107,0,.1)}
.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 .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(255,107,0,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:all .3s;z-index:2}
.video-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 .video-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:.75rem;z-index:2}
.video-info{padding:15px}
.video-info h3{font-size:1rem;margin-bottom:8px;color:#eee;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;align-items:center;gap:15px;font-size:.8rem;color:#777}
.video-meta span{display:flex;align-items:center;gap:4px}
.video-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.video-tags span{padding:2px 10px;background:rgba(0,180,255,.1);border-radius:12px;font-size:.75rem;color:#00b4ff}

/* Expert / Team Cards */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:25px}
.expert-card{background:#12121a;border-radius:12px;padding:25px;text-align:center;border:1px solid rgba(255,255,255,.05);transition:all .3s}
.expert-card:hover{border-color:rgba(255,107,0,.3);transform:translateY(-3px)}
.expert-avatar{width:120px;height:120px;border-radius:50%;margin:0 auto 15px;overflow:hidden;border:3px solid rgba(255,107,0,.3)}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{font-size:1.1rem;color:#fff;margin-bottom:5px}
.expert-card .role{color:#ff6b00;font-size:.85rem;margin-bottom:10px}
.expert-card p{font-size:.85rem;color:#888;margin-bottom:15px}
.expert-links{display:flex;justify-content:center;gap:10px}
.expert-links a{padding:6px 14px;border-radius:20px;font-size:.8rem;border:1px solid rgba(255,107,0,.3);color:#ff8c00;transition:all .3s}
.expert-links a:hover{background:rgba(255,107,0,.2);color:#fff}

/* FAQ Section */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#12121a;border-radius:10px;margin-bottom:12px;border:1px solid rgba(255,255,255,.05);overflow:hidden}
.faq-question{padding:18px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:1rem;color:#eee;transition:background .3s}
.faq-question:hover{background:rgba(255,107,0,.05)}
.faq-question::after{content:"+";font-size:1.3rem;color:#ff6b00;transition:transform .3s}
.faq-item.active .faq-question::after{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 20px}
.faq-item.active .faq-answer{max-height:300px;padding:0 20px 18px}
.faq-answer p{color:#999;font-size:.9rem;line-height:1.8}

/* Reviews / Testimonials */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.review-card{background:#12121a;border-radius:12px;padding:25px;border:1px solid rgba(255,255,255,.05)}
.review-card .stars{color:#ff6b00;margin-bottom:10px;font-size:1.1rem}
.review-card p{font-size:.9rem;color:#bbb;margin-bottom:15px;line-height:1.8}
.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,#ff6b00,#00b4ff);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:.9rem}
.review-card .reviewer-info{font-size:.85rem}
.review-card .reviewer-info strong{color:#eee;display:block}
.review-card .reviewer-info span{color:#777}

/* Community Section */
.community-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.community-card{background:#12121a;border-radius:12px;padding:25px;text-align:center;border:1px solid rgba(255,255,255,.05);transition:all .3s}
.community-card:hover{border-color:rgba(0,180,255,.3);transform:translateY(-3px)}
.community-card .icon{font-size:2.5rem;margin-bottom:15px}
.community-card h4{color:#fff;margin-bottom:8px}
.community-card p{color:#888;font-size:.85rem}

/* AI Section */
.ai-features{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:25px}
.ai-card{background:linear-gradient(135deg,rgba(0,180,255,.05),rgba(255,107,0,.05));border-radius:12px;padding:30px;border:1px solid rgba(0,180,255,.15);transition:all .3s}
.ai-card:hover{border-color:rgba(0,180,255,.4);transform:translateY(-3px)}
.ai-card h4{color:#00b4ff;margin-bottom:10px;font-size:1.1rem}
.ai-card p{color:#999;font-size:.9rem}

/* Partner Logos */
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.partner-logo{width:120px;height:60px;background:rgba(255,255,255,.05);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#666;font-size:.8rem;border:1px solid rgba(255,255,255,.05);transition:all .3s}
.partner-logo:hover{border-color:rgba(255,107,0,.3);background:rgba(255,107,0,.05)}

/* Contact Section */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px}
.contact-card{background:#12121a;border-radius:12px;padding:25px;border:1px solid rgba(255,255,255,.05)}
.contact-card h4{color:#ff6b00;margin-bottom:15px;font-size:1.1rem}
.contact-card p{color:#999;font-size:.9rem;margin-bottom:8px}
.contact-card a{color:#00b4ff}

/* Share Buttons */
.share-bar{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;padding:20px 0}
.share-btn{padding:8px 20px;border-radius:25px;font-size:.85rem;color:#fff;border:none;cursor:pointer;transition:all .3s}
.share-btn.wechat{background:#07c160}
.share-btn.weibo{background:#e6162d}
.share-btn.douyin{background:#161823}
.share-btn.bilibili{background:#00a1d6}
.share-btn:hover{opacity:.85;transform:translateY(-2px)}

/* Footer */
.site-footer{background:#060609;border-top:1px solid rgba(255,255,255,.05);padding:50px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px;margin-bottom:30px}
.footer-col h4{color:#ff6b00;margin-bottom:15px;font-size:1rem}
.footer-col p,.footer-col a{color:#777;font-size:.85rem;display:block;margin-bottom:8px;transition:color .3s}
.footer-col a:hover{color:#ff6b00}
.footer-qr{display:flex;gap:20px;justify-content:center;margin:30px 0}
.footer-qr .qr-item{text-align:center}
.footer-qr .qr-item img{width:120px;height:120px;border-radius:8px;margin-bottom:8px}
.footer-qr .qr-item span{font-size:.8rem;color:#777}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(255,255,255,.05);color:#555;font-size:.8rem}
.footer-bottom a{color:#666}

/* Breadcrumb */
.breadcrumb{padding:15px 0;font-size:.85rem;color:#777}
.breadcrumb a{color:#999}
.breadcrumb a:hover{color:#ff6b00}
.breadcrumb span{margin:0 8px;color:#555}

/* How-To Guide */
.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;min-width:50px;background:linear-gradient(135deg,#ff6b00,#ff8c00);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.2rem;font-weight:700}
.howto-step .step-content h4{color:#fff;margin-bottom:5px}
.howto-step .step-content p{color:#999;font-size:.9rem}

/* Buttons */
.btn{display:inline-block;padding:10px 24px;border-radius:25px;font-size:.9rem;cursor:pointer;transition:all .3s;border:none;text-align:center}
.btn-primary{background:linear-gradient(135deg,#ff6b00,#ff8c00);color:#fff}
.btn-primary:hover{background:linear-gradient(135deg,#ff8c00,#ffaa00);transform:translateY(-2px);color:#fff}
.btn-outline{border:1px solid rgba(255,107,0,.4);color:#ff8c00;background:transparent}
.btn-outline:hover{background:rgba(255,107,0,.1);color:#fff}

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

/* Scrollbar */
::-webkit-scrollbar{width:8px}
::-webkit-scrollbar-track{background:#0a0a0f}
::-webkit-scrollbar-thumb{background:#333;border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:#555}

/* Responsive */
@media(max-width:1024px){
  .hero-content h1{font-size:2.2rem}
  .hero-content h2{font-size:1.2rem}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(250px,1fr))}
}

@media(max-width:768px){
  .header-inner{padding:8px 15px}
  .main-nav{display:none;position:absolute;top:100%;left:0;width:100%;background:rgba(10,10,15,.98);flex-direction:column;padding:15px;border-top:1px solid rgba(255,107,0,.2)}
  .main-nav.active{display:flex}
  .nav-toggle{display:flex}
  .hero-banner{height:50vh;min-height:350px}
  .hero-content h1{font-size:1.8rem}
  .hero-content h2{font-size:1rem}
  .section{padding:40px 0}
  .section-title h2{font-size:1.5rem}
  .video-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:15px}
  .expert-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
  .search-box input{padding:8px 14px}
}

@media(max-width:480px){
  .hero-content h1{font-size:1.4rem}
  .video-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
}

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

/* MCP Frontend Placeholder */
.mcp-widget{background:rgba(0,180,255,.05);border:1px dashed rgba(0,180,255,.2);border-radius:12px;padding:30px;text-align:center;color:#666;font-size:.9rem}

/* Breadcrumb Navigation - 涩里番面包屑导航 */
.breadcrumb-nav{background:rgba(15,15,22,.9);border-bottom:1px solid rgba(255,255,255,.03);padding:0 20px}
.breadcrumb-nav .breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:0;padding:12px 0;margin:0}
.breadcrumb-nav .breadcrumb li{display:flex;align-items:center;font-size:.85rem;color:#777}
.breadcrumb-nav .breadcrumb li a{color:#999;transition:color .3s}
.breadcrumb-nav .breadcrumb li a:hover{color:#ff6b00}
.breadcrumb-nav .breadcrumb li+li::before{content:">";margin:0 10px;color:#555;font-size:.8rem}

/* Trust Badges - 涩里番EEAT信任标识 */
.trust-badges{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.trust-item{background:#12121a;border-radius:12px;padding:25px;text-align:center;border:1px solid rgba(255,255,255,.05);transition:all .3s}
.trust-item:hover{border-color:rgba(0,180,255,.3);transform:translateY(-3px)}
.trust-item .trust-icon{font-size:2.2rem;margin-bottom:12px}
.trust-item h5{color:#00b4ff;margin-bottom:8px;font-size:1rem}
.trust-item p{color:#888;font-size:.85rem;line-height:1.7}

/* Footer EEAT Declaration */
.footer-eeat{text-align:center;padding:15px 0;margin-bottom:15px;border-bottom:1px solid rgba(255,255,255,.03);border-top:1px solid rgba(255,255,255,.03)}
.footer-eeat p{color:#555;font-size:.75rem;margin-bottom:4px}

/* Expert Certification */
.expert-cert{color:#00b4ff;font-size:.8rem;margin-bottom:8px;padding:4px 12px;background:rgba(0,180,255,.08);border-radius:15px;display:inline-block}

/* Video Date */
.video-date{font-size:.8rem;color:#666;margin-top:6px}
.video-date time{color:#888}

/* H5 Video in Card */
.video-thumb video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s}
.video-card:hover .video-thumb video{transform:scale(1.05)}

/* Content Article */
.content-article{line-height:1.9;color:#bbb}
.content-article h3{color:#ff6b00;margin:25px 0 12px;font-size:1.2rem}
.content-article p{margin-bottom:15px;font-size:.95rem;color:#999}

/* Partner Wall Enhanced */
.partner-wall{padding:20px 0}

/* Video Modal */
.video-modal{position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,.9);display:none;align-items:center;justify-content:center}
.video-modal.active{display:flex}
.video-modal-content{max-width:800px;width:90%;background:#111;border-radius:12px;overflow:hidden;position:relative}
.video-modal-close{position:absolute;top:10px;right:15px;color:#fff;font-size:1.5rem;cursor:pointer;z-index:10}
.video-modal-player{width:100%;aspect-ratio:16/9;background:#000;display:flex;align-items:center;justify-content:center;color:#666;font-size:1.2rem}

/* Responsive additions */
@media(max-width:768px){
  .trust-badges{grid-template-columns:1fr 1fr}
  .breadcrumb-nav .breadcrumb{font-size:.8rem}
}
@media(max-width:480px){
  .trust-badges{grid-template-columns:1fr}
}