/* 91修车改装视频社区 - 原创CSS样式 */
/* 配色：深灰#1a1a2e + 橙红#e94560 + 钢蓝#0f3460 + 浅灰#f5f5f5 */

*{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:#2d2d2d;background:#f5f5f5;line-height:1.8}
a{color:#e94560;text-decoration:none;transition:color .3s}
a:hover{color:#0f3460}
img{max-width:100%;height:auto;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 顶部导航 */
.top-bar{background:#1a1a2e;color:#fff;padding:8px 0;font-size:13px;text-align:center}
.top-bar a{color:#e94560}
.site-header{background:#0f3460;position:sticky;top:0;z-index:1000;box-shadow:0 2px 15px rgba(0,0,0,.3)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;max-width:1200px;margin:0 auto}
.logo-area{display:flex;align-items:center;gap:12px}
.logo-area img{height:48px;width:auto}
.logo-area h1{color:#fff;font-size:20px;font-weight:700}
.logo-area h1 span{color:#e94560}
.main-nav{display:flex;gap:0}
.main-nav a{color:#ccd6e0;padding:12px 16px;font-size:14px;font-weight:500;transition:all .3s;border-bottom:3px solid transparent}
.main-nav a:hover,.main-nav a.active{color:#fff;border-bottom-color:#e94560;background:rgba(233,69,96,.1)}
.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:24px;cursor:pointer}
.search-box{position:relative;margin:0 20px}
.search-box input{background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.2);border-radius:20px;padding:8px 40px 8px 16px;color:#fff;font-size:13px;width:200px;transition:all .3s}
.search-box input::placeholder{color:rgba(255,255,255,.5)}
.search-box input:focus{background:rgba(255,255,255,.25);border-color:#e94560;outline:none;width:260px}
.search-box button{position:absolute;right:8px;top:50%;transform:translateY(-50%);background:none;border:none;color:#e94560;font-size:16px;cursor:pointer}

/* Banner区域 */
.hero-banner{position:relative;height:520px;overflow:hidden;background:#1a1a2e}
.hero-banner img{width:100%;height:100%;object-fit:cover;opacity:.6}
.hero-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(15,52,96,.85) 0%,rgba(26,26,46,.7) 50%,rgba(233,69,96,.3) 100%);display:flex;align-items:center;justify-content:center}
.hero-content{text-align:center;color:#fff;max-width:800px;padding:0 20px}
.hero-content h2{font-size:42px;font-weight:800;margin-bottom:16px;text-shadow:2px 2px 8px rgba(0,0,0,.5)}
.hero-content h2 span{color:#e94560}
.hero-content p{font-size:18px;line-height:1.8;margin-bottom:24px;opacity:.9}
.hero-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.btn-primary{background:#e94560;color:#fff;padding:12px 32px;border-radius:6px;font-size:15px;font-weight:600;transition:all .3s;border:2px solid #e94560}
.btn-primary:hover{background:transparent;color:#e94560}
.btn-outline{background:transparent;color:#fff;padding:12px 32px;border-radius:6px;font-size:15px;font-weight:600;border:2px solid #fff;transition:all .3s}
.btn-outline:hover{background:#fff;color:#0f3460}

/* 视频播放器区域 */
.video-showcase{background:#1a1a2e;padding:60px 0}
.video-showcase h2{color:#fff;text-align:center;font-size:32px;margin-bottom:40px}
.video-showcase h2 span{color:#e94560}
.video-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-player-wrap{position:relative;border-radius:10px;overflow:hidden;background:#000;aspect-ratio:16/9}
.video-player-wrap video{width:100%;height:100%;object-fit:cover}
.video-player-wrap .play-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.4);display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;cursor:pointer}
.video-player-wrap:hover .play-overlay{opacity:1}
.play-btn-lg{width:64px;height:64px;background:rgba(233,69,96,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:24px;color:#fff;transition:transform .3s}
.play-btn-lg:hover{transform:scale(1.1)}
.video-info{padding:12px;background:#0f3460}
.video-info h4{color:#fff;font-size:14px;margin-bottom:4px}
.video-info .meta{color:#8899aa;font-size:12px}

/* 区块通用 */
.section{padding:60px 0}
.section-dark{background:#1a1a2e;color:#fff}
.section-gray{background:#eaecef}
.section-title{text-align:center;margin-bottom:48px}
.section-title h2{font-size:32px;font-weight:700;color:#0f3460;margin-bottom:12px}
.section-dark .section-title h2{color:#fff}
.section-title h2 span{color:#e94560}
.section-title p{color:#666;font-size:16px;max-width:700px;margin:0 auto}
.section-dark .section-title p{color:#aab}

/* 视频卡片网格 */
.video-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.video-card{background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.08);transition:all .3s}
.video-card:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(0,0,0,.15)}
.video-card .thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.video-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.video-card:hover .thumb img{transform:scale(1.08)}
.video-card .thumb .play-icon{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:50px;height:50px;background:rgba(233,69,96,.85);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s}
.video-card:hover .thumb .play-icon{opacity:1}
.video-card .thumb .play-icon::after{content:"";border-left:18px solid #fff;border-top:11px solid transparent;border-bottom:11px solid transparent;margin-left:4px}
.video-card .thumb .badge{position:absolute;top:10px;left:10px;background:#e94560;color:#fff;padding:3px 10px;border-radius:4px;font-size:11px;font-weight:600}
.video-card .thumb .duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:3px;font-size:11px}
.video-card .card-body{padding:16px}
.video-card .card-body h3{font-size:15px;font-weight:600;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-card .card-body .stats{display:flex;gap:12px;color:#888;font-size:12px}
.video-card .card-body .stats span{display:flex;align-items:center;gap:4px}

/* 修车传媒模块 */
.media-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.media-item{background:#fff;border-radius:10px;padding:32px 24px;text-align:center;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:all .3s;border-top:4px solid transparent}
.media-item:hover{border-top-color:#e94560;transform:translateY(-4px)}
.media-item .icon{width:60px;height:60px;background:linear-gradient(135deg,#e94560,#0f3460);border-radius:12px;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:28px;color:#fff}
.media-item h3{font-size:18px;font-weight:600;margin-bottom:8px;color:#0f3460}
.media-item p{color:#666;font-size:14px;line-height:1.7}

/* 娱乐专区 */
.ent-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.ent-card{display:flex;gap:20px;background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:all .3s}
.ent-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.12)}
.ent-card .ent-img{width:200px;min-height:160px;flex-shrink:0}
.ent-card .ent-img img{width:100%;height:100%;object-fit:cover}
.ent-card .ent-body{padding:20px;display:flex;flex-direction:column;justify-content:center}
.ent-card .ent-body h3{font-size:18px;font-weight:600;margin-bottom:8px;color:#0f3460}
.ent-card .ent-body p{color:#666;font-size:14px;line-height:1.7}

/* AI赋能 */
.ai-features{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.ai-features .ai-img{border-radius:12px;overflow:hidden;box-shadow:0 8px 30px rgba(0,0,0,.2)}
.ai-features .ai-img img{width:100%;display:block}
.ai-list{list-style:none}
.ai-list li{padding:16px 0;border-bottom:1px solid rgba(255,255,255,.1);display:flex;gap:16px;align-items:flex-start}
.ai-list li .ai-icon{width:44px;height:44px;background:#e94560;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.ai-list li h4{color:#fff;font-size:16px;margin-bottom:4px}
.ai-list li p{color:#aab;font-size:13px}

/* 社区功能 */
.community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.community-tag{background:linear-gradient(135deg,#0f3460,#1a1a2e);color:#fff;padding:24px;border-radius:10px;text-align:center;transition:all .3s;border:1px solid rgba(233,69,96,.2)}
.community-tag:hover{border-color:#e94560;transform:scale(1.03)}
.community-tag h4{font-size:16px;margin-bottom:6px}
.community-tag p{font-size:13px;color:#aab}

/* 专家展示 */
.experts-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.expert-card{background:#fff;border-radius:12px;overflow:hidden;box-shadow:0 4px 20px rgba(0,0,0,.08);text-align:center;transition:all .3s}
.expert-card:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(0,0,0,.15)}
.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(1.05)}
.expert-card .expert-info{padding:20px}
.expert-card .expert-info h3{font-size:18px;font-weight:600;color:#0f3460;margin-bottom:4px}
.expert-card .expert-info .role{color:#e94560;font-size:13px;font-weight:500;margin-bottom:8px}
.expert-card .expert-info p{color:#666;font-size:13px;line-height:1.6;margin-bottom:12px}
.expert-card .expert-info .expert-btns{display:flex;gap:8px;justify-content:center}
.expert-card .expert-info .expert-btns a{padding:6px 14px;border-radius:4px;font-size:12px;font-weight:500}
.btn-sm-primary{background:#e94560;color:#fff}
.btn-sm-outline{border:1px solid #0f3460;color:#0f3460}

/* 合作品牌 */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:32px;margin-bottom:40px}
.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,.06);font-size:14px;font-weight:600;color:#0f3460;transition:all .3s}
.brand-wall .brand-item:hover{box-shadow:0 4px 16px rgba(233,69,96,.2);color:#e94560}

/* How-To指南 */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:32px}
.howto-step{text-align:center;padding:24px;background:#fff;border-radius:10px;box-shadow:0 2px 12px rgba(0,0,0,.06)}
.howto-step .step-num{width:48px;height:48px;background:#e94560;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;margin:0 auto 12px}
.howto-step h4{font-size:15px;color:#0f3460;margin-bottom:6px}
.howto-step p{font-size:13px;color:#666}

/* 用户评价 */
.reviews-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.review-card{background:#fff;border-radius:10px;padding:28px;box-shadow:0 4px 16px rgba(0,0,0,.06);transition:all .3s}
.review-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.12)}
.review-card .stars{color:#f5a623;font-size:16px;margin-bottom:12px}
.review-card p{color:#555;font-size:14px;line-height:1.7;margin-bottom:16px;font-style:italic}
.review-card .reviewer{display:flex;align-items:center;gap:12px}
.review-card .reviewer .r-avatar{width:40px;height:40px;background:#e94560;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600;font-size:16px}
.review-card .reviewer .r-info{font-size:13px}
.review-card .reviewer .r-info strong{color:#0f3460;display:block}
.review-card .reviewer .r-info span{color:#888}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border-radius:8px;margin-bottom:12px;box-shadow:0 2px 8px rgba(0,0,0,.04);overflow:hidden}
.faq-item .faq-q{padding:18px 24px;font-size:15px;font-weight:600;color:#0f3460;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s}
.faq-item .faq-q:hover{background:#f8f9fa}
.faq-item .faq-q .arrow{transition:transform .3s;font-size:18px;color:#e94560}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-item .faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .3s;color:#555;font-size:14px;line-height:1.8}
.faq-item.open .faq-a{padding:0 24px 18px;max-height:500px}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info-list{list-style:none}
.contact-info-list li{padding:16px 0;border-bottom:1px solid #eee;display:flex;gap:16px;align-items:center}
.contact-info-list li .ci-icon{width:44px;height:44px;background:linear-gradient(135deg,#e94560,#0f3460);border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;flex-shrink:0}
.contact-info-list li .ci-text h4{font-size:14px;color:#0f3460;margin-bottom:2px}
.contact-info-list li .ci-text p{font-size:13px;color:#666}
.qr-codes{display:flex;gap:24px;margin-top:24px}
.qr-codes .qr-item{text-align:center}
.qr-codes .qr-item img{width:140px;height:140px;border-radius:8px;margin-bottom:8px}
.qr-codes .qr-item p{font-size:12px;color:#666}

/* 社交分享 */
.share-bar{display:flex;gap:12px;justify-content:center;margin:32px 0}
.share-bar a{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;transition:transform .3s}
.share-bar a:hover{transform:scale(1.15)}
.share-wechat{background:#07c160}
.share-weibo{background:#e6162d}
.share-douyin{background:#010101}
.share-bilibili{background:#00a1d6}

/* 页脚 */
.site-footer{background:#0f3460;color:#ccd6e0;padding:48px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px;padding-bottom:8px;border-bottom:2px solid #e94560;display:inline-block}
.footer-col p{font-size:13px;line-height:1.8;color:#8899aa}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:8px}
.footer-col ul li a{color:#8899aa;font-size:13px;transition:color .3s}
.footer-col ul li a:hover{color:#e94560}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;text-align:center;font-size:12px;color:#667788}
.footer-bottom a{color:#e94560}

/* 回到顶部 */
.back-to-top{position:fixed;bottom:30px;right:30px;width:44px;height:44px;background:#e94560;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;cursor:pointer;opacity:0;visibility:hidden;transition:all .3s;z-index:999;box-shadow:0 4px 12px rgba(233,69,96,.4)}
.back-to-top.show{opacity:1;visibility:visible}
.back-to-top:hover{background:#0f3460}

/* 面包屑 */
.breadcrumb{padding:16px 0;font-size:13px;color:#888}
.breadcrumb a{color:#0f3460}
.breadcrumb span{margin:0 8px;color:#ccc}

/* 内页通用 */
.page-hero{background:linear-gradient(135deg,#0f3460 0%,#1a1a2e 100%);padding:60px 0;text-align:center;color:#fff}
.page-hero h1{font-size:36px;font-weight:700;margin-bottom:12px}
.page-hero h1 span{color:#e94560}
.page-hero p{font-size:16px;opacity:.8;max-width:600px;margin:0 auto}
.page-content{padding:48px 0}
.page-content h2{font-size:24px;color:#0f3460;margin-bottom:16px}
.page-content h3{font-size:20px;color:#0f3460;margin:24px 0 12px}
.page-content p{margin-bottom:16px;color:#555;line-height:1.8}

/* 动画 */
.fade-in{opacity:0;transform:translateY(30px);transition:all .6s ease-out}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* 懒加载 */
img[data-src]{opacity:0;transition:opacity .4s}
img[data-src].loaded{opacity:1}

/* 干扰标签隐藏 */
.nz-wrap{position:absolute;width:0;height:0;overflow:hidden;opacity:0;pointer-events:none;z-index:-9999}

/* 响应式 */
@media(max-width:1024px){
.video-cards{grid-template-columns:repeat(2,1fr)}
.experts-grid{grid-template-columns:repeat(2,1fr)}
.media-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
.howto-steps{grid-template-columns:repeat(2,1fr)}
.ai-features{grid-template-columns:1fr}
}
@media(max-width:768px){
.header-inner{flex-wrap:wrap}
.main-nav{display:none;width:100%;flex-direction:column;background:#0f3460;position:absolute;top:100%;left:0;right:0}
.main-nav.open{display:flex}
.main-nav a{padding:14px 20px;border-bottom:1px solid rgba(255,255,255,.1)}
.nav-toggle{display:block}
.search-box{width:100%;margin:10px 0 0}
.search-box input{width:100%}
.hero-banner{height:400px}
.hero-content h2{font-size:28px}
.video-grid-3{grid-template-columns:1fr}
.video-cards{grid-template-columns:1fr}
.ent-grid{grid-template-columns:1fr}
.ent-card{flex-direction:column}
.ent-card .ent-img{width:100%;height:180px}
.contact-grid{grid-template-columns:1fr}
.reviews-grid{grid-template-columns:1fr}
.community-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr}
.brand-wall .brand-item{width:100px;height:50px;font-size:12px}
.howto-steps{grid-template-columns:1fr}
}