/* 萝莉漫画修车改装视频社区 - 原创样式表 */
/* 配色：深炭灰#1a1a2e + 赛车红#e63946 + 钛银#c0c0c0 + 暗蓝#16213e */
*{margin:0;padding:0;box-sizing:border-box;}
:root{--bg-dark:#1a1a2e;--bg-card:#16213e;--red:#e63946;--silver:#c0c0c0;--white:#f0f0f0;--text:#d4d4d4;--gold:#f4a261;--border:#2a2a4a;}
body{font-family:"Microsoft YaHei","PingFang SC",sans-serif;background:var(--bg-dark);color:var(--text);line-height:1.8;overflow-x:hidden;}
a{color:var(--red);text-decoration:none;transition:color .3s;}
a:hover{color:var(--gold);}
img{max-width:100%;height:auto;display:block;}

/* 头部导航 */
.site-header{background:linear-gradient(180deg,#0d0d1a 0%,var(--bg-dark) 100%);border-bottom:2px solid var(--red);position:sticky;top:0;z-index:1000;padding:0 20px;}
.header-inner{max-width:1300px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:68px;}
.logo-area{display:flex;align-items:center;gap:10px;}
.logo-area img{height:42px;width:auto;}
.logo-area span{font-size:24px;font-weight:900;color:var(--red);letter-spacing:2px;}
.nav-main{display:flex;gap:0;}
.nav-main a{color:var(--silver);padding:22px 16px;font-size:15px;font-weight:500;border-bottom:3px solid transparent;transition:all .3s;}
.nav-main a:hover,.nav-main a.active{color:var(--red);border-bottom-color:var(--red);background:rgba(230,57,70,.06);}

/* 搜索框 */
.search-bar{background:var(--bg-card);padding:12px 0;border-bottom:1px solid var(--border);}
.search-bar-inner{max-width:1300px;margin:0 auto;display:flex;justify-content:center;padding:0 20px;}
.search-box{display:flex;width:560px;max-width:100%;}
.search-box input{flex:1;padding:10px 18px;border:2px solid var(--border);border-right:none;border-radius:6px 0 0 6px;background:#0d0d1a;color:var(--white);font-size:15px;outline:none;transition:border-color .3s;}
.search-box input:focus{border-color:var(--red);}
.search-box button{padding:10px 24px;background:var(--red);color:#fff;border:none;border-radius:0 6px 6px 0;cursor:pointer;font-size:15px;font-weight:600;transition:background .3s;}
.search-box button:hover{background:#c1121f;}

/* Banner */
.hero-banner{position:relative;height:520px;overflow:hidden;display:flex;align-items:center;justify-content:center;}
.hero-banner img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;filter:brightness(.45);}
.hero-content{position:relative;z-index:2;text-align:center;padding:0 20px;max-width:800px;}
.hero-content h1{font-size:48px;font-weight:900;color:#fff;text-shadow:0 4px 20px rgba(0,0,0,.7);margin-bottom:16px;line-height:1.3;}
.hero-content h1 em{font-style:normal;color:var(--red);}
.hero-content p{font-size:18px;color:rgba(255,255,255,.85);margin-bottom:28px;text-shadow:0 2px 10px rgba(0,0,0,.5);}
.hero-btn{display:inline-block;padding:14px 40px;background:var(--red);color:#fff;font-size:17px;font-weight:700;border-radius:50px;letter-spacing:1px;transition:all .3s;box-shadow:0 4px 20px rgba(230,57,70,.4);}
.hero-btn:hover{background:#c1121f;transform:translateY(-2px);color:#fff;}

/* 面包屑 */
.breadcrumb{max-width:1300px;margin:0 auto;padding:14px 20px;font-size:13px;color:var(--silver);}
.breadcrumb a{color:var(--silver);}
.breadcrumb a:hover{color:var(--red);}

/* 通用容器 */
.container{max-width:1300px;margin:0 auto;padding:0 20px;}
.section{padding:60px 0;}
.section-title{text-align:center;margin-bottom:40px;}
.section-title h2{font-size:32px;font-weight:800;color:var(--white);margin-bottom:10px;}
.section-title h2 em{font-style:normal;color:var(--red);}
.section-title p{font-size:16px;color:var(--silver);}

/* 视频卡片网格 */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.video-card{background:var(--bg-card);border-radius:10px;overflow:hidden;border:1px solid var(--border);transition:all .35s;cursor:pointer;position:relative;}
.video-card:hover{transform:translateY(-6px);border-color:var(--red);box-shadow:0 12px 35px rgba(230,57,70,.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(1.08);}
.play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(230,57,70,.9);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .3s;pointer-events:none;}
.play-btn::after{content:"";border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:4px;}
.video-card:hover .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:12px;}
.video-info{padding:14px 16px;}
.video-info h3{font-size:15px;font-weight:700;color:var(--white);margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.video-meta{display:flex;justify-content:space-between;font-size:12px;color:var(--silver);}
.video-stats{display:flex;gap:12px;font-size:12px;color:var(--silver);margin-top:6px;}
.video-stats span::before{margin-right:3px;}

/* 分类标签 */
.tag-list{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:30px;}
.tag-item{padding:8px 20px;background:var(--bg-card);border:1px solid var(--border);border-radius:20px;color:var(--silver);font-size:14px;cursor:pointer;transition:all .3s;}
.tag-item:hover,.tag-item.active{background:var(--red);color:#fff;border-color:var(--red);}

/* 专家卡片 */
.expert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.expert-card{background:var(--bg-card);border-radius:12px;padding:30px;text-align:center;border:1px solid var(--border);transition:all .35s;}
.expert-card:hover{border-color:var(--gold);box-shadow:0 8px 30px rgba(244,162,97,.1);}
.expert-avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 16px;overflow:hidden;border:3px solid var(--red);}
.expert-avatar img{width:100%;height:100%;object-fit:cover;}
.expert-card h3{font-size:20px;color:var(--white);margin-bottom:6px;}
.expert-card .role{color:var(--gold);font-size:14px;margin-bottom:12px;}
.expert-card p{font-size:14px;color:var(--silver);margin-bottom:16px;}
.expert-btn{display:inline-block;padding:8px 22px;border:1px solid var(--red);color:var(--red);border-radius:20px;font-size:13px;transition:all .3s;}
.expert-btn:hover{background:var(--red);color:#fff;}

/* FAQ */
.faq-list{max-width:900px;margin:0 auto;}
.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;margin-bottom:14px;overflow:hidden;}
.faq-q{padding:18px 24px;font-size:16px;font-weight:700;color:var(--white);cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background .3s;}
.faq-q:hover{background:rgba(230,57,70,.08);}
.faq-q::after{content:"+";font-size:22px;color:var(--red);transition:transform .3s;}
.faq-item.open .faq-q::after{transform:rotate(45deg);}
.faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:all .4s;color:var(--silver);font-size:15px;line-height:1.8;}
.faq-item.open .faq-a{padding:0 24px 18px;max-height:500px;}

/* 用户评价 */
.review-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.review-card{background:var(--bg-card);border:1px solid var(--border);border-radius:10px;padding:24px;position:relative;}
.review-card::before{content:"\201C";font-size:60px;color:var(--red);opacity:.3;position:absolute;top:8px;left:16px;line-height:1;}
.review-stars{color:var(--gold);font-size:16px;margin-bottom:10px;letter-spacing:2px;}
.review-text{font-size:15px;color:var(--text);margin-bottom:14px;padding-left:10px;}
.review-author{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--silver);}
.review-author strong{color:var(--white);}

/* 社区模块 */
.community-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.comm-card{background:var(--bg-card);border-radius:10px;overflow:hidden;border:1px solid var(--border);transition:all .3s;}
.comm-card:hover{border-color:var(--red);}
.comm-card img{width:100%;height:200px;object-fit:cover;}
.comm-card-body{padding:18px;}
.comm-card-body h3{font-size:18px;color:var(--white);margin-bottom:8px;}
.comm-card-body p{font-size:14px;color:var(--silver);}

/* AI赋能 */
.ai-features{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.ai-card{background:linear-gradient(135deg,var(--bg-card) 0%,#1a1a3e 100%);border:1px solid var(--border);border-radius:12px;padding:32px;text-align:center;transition:all .35s;}
.ai-card:hover{border-color:var(--red);transform:translateY(-4px);}
.ai-icon{font-size:42px;margin-bottom:16px;}
.ai-card h3{font-size:20px;color:var(--white);margin-bottom:10px;}
.ai-card p{font-size:14px;color:var(--silver);}

/* 合作品牌墙 */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:30px;padding:20px 0;}
.brand-item{width:140px;height:70px;background:var(--bg-card);border:1px solid var(--border);border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--silver);font-size:14px;font-weight:600;transition:all .3s;}
.brand-item:hover{border-color:var(--gold);color:var(--gold);}

/* 联系我们 */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;}
.contact-info{background:var(--bg-card);border-radius:12px;padding:36px;border:1px solid var(--border);}
.contact-info h3{font-size:22px;color:var(--white);margin-bottom:20px;border-left:4px solid var(--red);padding-left:14px;}
.contact-item{display:flex;gap:12px;margin-bottom:16px;font-size:15px;}
.contact-item strong{color:var(--white);min-width:80px;}
.qr-section{display:flex;gap:30px;margin-top:24px;}
.qr-box{text-align:center;}
.qr-box img{width:140px;height:140px;border-radius:8px;border:2px solid var(--border);}
.qr-box p{font-size:13px;color:var(--silver);margin-top:8px;}

/* 分享按钮 */
.share-bar{display:flex;gap:12px;justify-content:center;padding:20px 0;}
.share-btn{padding:10px 20px;border-radius:20px;font-size:13px;font-weight:600;color:#fff;cursor:pointer;border:none;transition:opacity .3s;}
.share-btn:hover{opacity:.85;}
.share-wechat{background:#07c160;}
.share-weibo{background:#e6162d;}
.share-douyin{background:#161823;}
.share-bilibili{background:#00a1d6;}

/* 页脚 */
.site-footer{background:#0d0d1a;border-top:2px solid var(--red);padding:50px 0 0;}
.footer-inner{max-width:1300px;margin:0 auto;padding:0 20px;}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px;}
.footer-col h4{font-size:17px;color:var(--white);margin-bottom:16px;border-left:3px solid var(--red);padding-left:10px;}
.footer-col p,.footer-col a{font-size:14px;color:var(--silver);display:block;margin-bottom:8px;}
.footer-col a:hover{color:var(--red);}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-logo img{height:36px;}
.footer-logo span{font-size:22px;font-weight:900;color:var(--red);}
.footer-bottom{border-top:1px solid var(--border);padding:20px 0;text-align:center;}
.footer-bottom p{font-size:13px;color:var(--silver);margin-bottom:6px;}
.footer-bottom a{color:var(--silver);}
.footer-bottom a:hover{color:var(--red);}

/* How-To指南 */
.howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step;}
.howto-step{background:var(--bg-card);border:1px solid var(--border);border-radius:10px;padding:28px 20px;text-align:center;position:relative;counter-increment:step;}
.howto-step::before{content:counter(step);display:block;width:44px;height:44px;line-height:44px;background:var(--red);color:#fff;border-radius:50%;font-size:20px;font-weight:800;margin:0 auto 14px;}
.howto-step h4{font-size:16px;color:var(--white);margin-bottom:8px;}
.howto-step p{font-size:13px;color:var(--silver);}

/* 内页Banner */
.page-banner{height:280px;position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;}
.page-banner img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;filter:brightness(.35);}
.page-banner-content{position:relative;z-index:2;text-align:center;}
.page-banner-content h1{font-size:38px;font-weight:900;color:#fff;text-shadow:0 3px 15px rgba(0,0,0,.6);}
.page-banner-content p{font-size:16px;color:rgba(255,255,255,.8);margin-top:8px;}

/* 响应式 */
@media(max-width:1024px){
.video-grid{grid-template-columns:repeat(3,1fr);}
.expert-grid,.community-cards,.ai-features{grid-template-columns:repeat(2,1fr);}
.footer-grid{grid-template-columns:1fr 1fr;}
.howto-steps{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:768px){
.header-inner{flex-direction:column;height:auto;padding:10px 0;}
.nav-main{flex-wrap:wrap;justify-content:center;}
.nav-main a{padding:10px 12px;font-size:13px;}
.hero-banner{height:380px;}
.hero-content h1{font-size:30px;}
.video-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
.expert-grid,.community-cards,.ai-features{grid-template-columns:1fr;}
.review-grid{grid-template-columns:1fr;}
.contact-grid{grid-template-columns:1fr;}
.footer-grid{grid-template-columns:1fr;}
.howto-steps{grid-template-columns:1fr;}
.search-box{width:100%;}
}
@media(max-width:480px){
.video-grid{grid-template-columns:1fr;}
.hero-content h1{font-size:24px;}
.section{padding:40px 0;}
}