/* ========================================
   芒果视频 - 汽车改装视频社区 主样式表
   品牌色: 深蓝 #0d1b2a | 橙色 #ff6b35 | 银灰 #c0c0c0
   ======================================== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:#e0e0e0;background:#0a0f1a;line-height:1.7;overflow-x:hidden}
a{color:#ff6b35;text-decoration:none;transition:color .3s}
a:hover{color:#ff8c5a}
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{max-width:1200px;margin:0 auto;padding:0 20px}
.site-header{background:linear-gradient(180deg,#0d1b2a 0%,#0a1628 100%);position:sticky;top:0;z-index:1000;border-bottom:2px solid #ff6b35;box-shadow:0 2px 20px rgba(255,107,53,.15)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;max-width:1200px;margin:0 auto}
.site-logo{display:flex;align-items:center;gap:10px}
.site-logo img{width:48px;height:48px;border-radius:8px}
.site-logo span{font-size:1.4rem;font-weight:800;color:#ff6b35;letter-spacing:1px}
.main-nav{display:flex;gap:0}
.main-nav a{color:#c0c0c0;padding:12px 16px;font-size:.95rem;transition:all .3s;position:relative}
.main-nav a:hover,.main-nav a.active{color:#ff6b35}
.main-nav a::after{content:'';position:absolute;bottom:0;left:50%;width:0;height:2px;background:#ff6b35;transition:all .3s;transform:translateX(-50%)}
.main-nav a:hover::after,.main-nav a.active::after{width:70%}
.mobile-toggle{display:none;background:none;border:none;color:#ff6b35;font-size:1.5rem;cursor:pointer}
.search-bar{background:#0d1b2a;padding:12px 0;border-bottom:1px solid #1a2a3e}
.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;border:2px solid #1a2a3e;border-right:none;border-radius:25px 0 0 25px;background:#0a1628;color:#e0e0e0;font-size:.95rem;outline:none;transition:border-color .3s}
.search-box input:focus{border-color:#ff6b35}
.search-box button{padding:10px 24px;background:#ff6b35;color:#fff;border:2px solid #ff6b35;border-radius:0 25px 25px 0;cursor:pointer;font-size:.95rem;transition:background .3s}
.search-box button:hover{background:#e55a28}
.hero{position:relative;overflow:hidden;min-height:480px;display:flex;align-items:center;background:#0d1b2a}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.5)}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(13,27,42,.9) 0%,rgba(13,27,42,.4) 50%,rgba(255,107,53,.1) 100%)}
.hero-content{position:relative;z-index:2;max-width:700px;padding:60px 20px}
.hero h1{font-size:2.6rem;margin-bottom:16px;text-shadow:0 2px 10px rgba(0,0,0,.5)}
.hero h1 .brand{color:#ff6b35}
.hero p{font-size:1.15rem;color:#b0b0b0;margin-bottom:28px;line-height:1.8}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:24px}
.hero-tags span{background:rgba(255,107,53,.15);color:#ff6b35;padding:5px 14px;border-radius:20px;font-size:.85rem;border:1px solid rgba(255,107,53,.3)}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 28px;border-radius:25px;font-size:.95rem;font-weight:600;transition:all .3s;cursor:pointer;border:none}
.btn-primary{background:#ff6b35;color:#fff}
.btn-primary:hover{background:#e55a28;transform:translateY(-2px);box-shadow:0 4px 15px rgba(255,107,53,.4)}
.btn-outline{background:transparent;color:#ff6b35;border:2px solid #ff6b35}
.btn-outline:hover{background:#ff6b35;color:#fff}
.section{padding:60px 0}
.section-title{text-align:center;margin-bottom:40px}
.section-title h2{font-size:2rem;margin-bottom:10px}
.section-title h2 .hl{color:#ff6b35}
.section-title p{color:#888;font-size:1rem;max-width:600px;margin:0 auto}
.section-alt{background:#0d1b2a}
.video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.video-card{background:#111d2e;border-radius:12px;overflow:hidden;transition:transform .3s,box-shadow .3s;cursor:pointer;position:relative}
.video-card:hover{transform:translateY(-6px);box-shadow:0 8px 30px rgba(255,107,53,.15)}
.video-thumb{position:relative;overflow:hidden;aspect-ratio:16/9}
.video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .video-thumb img{transform:scale(1.05)}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(255,107,53,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;pointer-events:none}
.play-btn::after{content:'';border-style:solid;border-width:10px 0 10px 18px;border-color:transparent transparent transparent #fff;margin-left:3px}
.video-card:hover .play-btn{opacity:1}
.video-info{padding:14px 16px}
.video-info h3{font-size:1rem;margin-bottom:6px;color:#e0e0e0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-meta{display:flex;gap:14px;font-size:.8rem;color:#666;flex-wrap:wrap}
.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{font-size:.75rem;padding:2px 8px;background:rgba(255,107,53,.1);color:#ff6b35;border-radius:10px}
.duration-badge{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.8);color:#fff;padding:2px 8px;border-radius:4px;font-size:.75rem}
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.expert-card{background:#111d2e;border-radius:12px;padding:24px;text-align:center;transition:transform .3s}
.expert-card:hover{transform:translateY(-4px)}
.expert-avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 16px;border:3px solid #ff6b35;overflow:hidden}
.expert-avatar img{width:100%;height:100%;object-fit:cover}
.expert-card h4{color:#fff;font-size:1.1rem;margin-bottom:4px}
.expert-card .role{color:#ff6b35;font-size:.85rem;margin-bottom:10px}
.expert-card p{color:#888;font-size:.85rem;line-height:1.6;margin-bottom:14px}
.expert-btns{display:flex;gap:8px;justify-content:center}
.expert-btns a{padding:6px 16px;border-radius:20px;font-size:.8rem}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#111d2e;border-radius:10px;margin-bottom:12px;overflow:hidden;border:1px solid #1a2a3e}
.faq-q{padding:16px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-weight:600;color:#e0e0e0;transition:color .3s}
.faq-q:hover{color:#ff6b35}
.faq-q .icon{color:#ff6b35;font-size:1.2rem;transition:transform .3s}
.faq-q.active .icon{transform:rotate(45deg)}
.faq-a{padding:0 20px;max-height:0;overflow:hidden;transition:max-height .4s ease,padding .4s;color:#999;font-size:.9rem;line-height:1.8}
.faq-a.show{max-height:500px;padding:0 20px 16px}
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}
.review-card{background:#111d2e;border-radius:12px;padding:20px;border-left:3px solid #ff6b35}
.review-header{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.review-avatar{width:40px;height:40px;border-radius:50%;background:#1a2a3e;display:flex;align-items:center;justify-content:center;color:#ff6b35;font-weight:700;font-size:1rem}
.review-name{font-weight:600;color:#e0e0e0;font-size:.9rem}
.review-date{font-size:.75rem;color:#666}
.review-stars{color:#ff6b35;font-size:.85rem;margin-bottom:8px}
.review-text{color:#999;font-size:.88rem;line-height:1.7}
.partner-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;align-items:center}
.partner-wall .partner-item{background:#111d2e;padding:16px 28px;border-radius:10px;color:#666;font-size:1rem;font-weight:600;border:1px solid #1a2a3e;transition:all .3s}
.partner-wall .partner-item:hover{border-color:#ff6b35;color:#ff6b35}
.howto-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px;margin-top:30px}
.howto-step{background:#111d2e;border-radius:12px;padding:24px;text-align:center;position:relative}
.step-num{width:40px;height:40px;background:#ff6b35;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;margin:0 auto 14px;font-size:1.1rem}
.howto-step h4{color:#e0e0e0;margin-bottom:8px;font-size:1rem}
.howto-step p{color:#888;font-size:.85rem;line-height:1.6}
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.contact-card{background:#111d2e;border-radius:12px;padding:24px;text-align:center}
.contact-card h4{color:#ff6b35;margin-bottom:10px;font-size:1rem}
.contact-card p{color:#999;font-size:.88rem;line-height:1.7}
.contact-card img{max-width:160px;margin:10px auto;border-radius:8px}
.share-bar{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:20px}
.share-btn{padding:8px 18px;border-radius:20px;font-size:.85rem;color:#fff;transition:all .3s;cursor:pointer}
.share-btn.wechat{background:#07c160}
.share-btn.weibo{background:#e6162d}
.share-btn.douyin{background:#161823;border:1px solid #333}
.share-btn.bilibili{background:#00a1d6}
.share-btn:hover{opacity:.85;transform:translateY(-2px)}
.ai-features{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.ai-card{background:#111d2e;border-radius:12px;padding:24px;border-top:3px solid #ff6b35;transition:transform .3s}
.ai-card:hover{transform:translateY(-4px)}
.ai-card h4{color:#e0e0e0;margin-bottom:8px}
.ai-card p{color:#888;font-size:.88rem;line-height:1.7}
.site-footer{background:#060b14;border-top:2px solid #1a2a3e;padding:40px 0 20px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px;margin-bottom:30px}
.footer-col h4{color:#ff6b35;margin-bottom:14px;font-size:1rem}
.footer-col p,.footer-col a{color:#666;font-size:.88rem;line-height:2}
.footer-col a:hover{color:#ff6b35}
.footer-col .footer-logo{display:flex;align-items:center;gap:8px;margin-bottom:12px}
.footer-col .footer-logo img{width:36px;height:36px;border-radius:6px}
.footer-col .footer-logo span{color:#ff6b35;font-weight:700;font-size:1.1rem}
.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid #1a2a3e;color:#555;font-size:.8rem}
.footer-qr{display:flex;gap:20px;justify-content:center;margin:20px 0}
.footer-qr .qr-item{text-align:center}
.footer-qr .qr-item img{width:120px;height:120px;border-radius:8px;margin-bottom:6px}
.footer-qr .qr-item span{color:#888;font-size:.78rem;display:block}
.breadcrumb{padding:14px 0;font-size:.85rem;color:#666}
.breadcrumb a{color:#ff6b35}
.breadcrumb span{margin:0 6px;color:#444}
.page-banner{background:#0d1b2a;padding:50px 0 30px;text-align:center;border-bottom:1px solid #1a2a3e}
.page-banner h1{font-size:2rem;margin-bottom:8px}
.page-banner p{color:#888;font-size:1rem}
.page-content{padding:40px 0}
.cat-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:30px;justify-content:center}
.cat-tab{padding:8px 20px;border-radius:20px;background:#111d2e;color:#888;font-size:.88rem;cursor:pointer;transition:all .3s;border:1px solid #1a2a3e}
.cat-tab:hover,.cat-tab.active{background:#ff6b35;color:#fff;border-color:#ff6b35}
.wol7s1-cpqz{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}
.short-video .video-thumb{aspect-ratio:9/16}
.short-video .video-thumb img{object-position:center}
.short-video .video-info h3{font-size:.9rem}
.footer-bottom a{color:#666;transition:color .3s}
.footer-bottom a:hover{color:#ff6b35}
.hl{color:#ff6b35}
@media(max-width:768px){
.header-inner{flex-wrap:wrap}
.main-nav{display:none;flex-direction:column;width:100%;padding:10px 0}
.main-nav.show{display:flex}
.mobile-toggle{display:block}
.hero h1{font-size:1.8rem}
.hero{min-height:360px}
.hero-content{padding:40px 20px}
.section{padding:40px 0}
.section-title h2{font-size:1.5rem}
.video-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.footer-grid{grid-template-columns:1fr}
.search-box{max-width:100%}
}
@media(max-width:480px){
.hero h1{font-size:1.4rem}
.video-grid{grid-template-columns:1fr}
.expert-grid{grid-template-columns:1fr}
.hero-btns{flex-direction:column}
.btn{text-align:center}
}