/* 萝莉漫画汽车改装视频社区 - 原创样式 flyregzz.cn */
/* 配色: 赛车红#E8453C 深灰#1A1A2E 碳纤维黑#0F0F1A 银灰#C0C0C8 亮白#F5F5F7 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--vmtz-red:#E8453C;--vmtz-red-dark:#D4302A;--vmtz-dark:#1A1A2E;--vmtz-black:#0F0F1A;--vmtz-silver:#C0C0C8;--vmtz-light:#F5F5F7;--vmtz-text:#2D2D3A;--vmtz-gray:#6B7280;--vmtz-border:#E2E4E8;--vmtz-shadow:0 4px 24px rgba(0,0,0,0.08);--vmtz-radius:12px;--max-w:1200px}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;color:var(--vmtz-text);background:var(--vmtz-light);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--vmtz-red);text-decoration:none;transition:color .2s}
a:hover{color:var(--vmtz-red-dark)}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:var(--max-w);margin:0 auto;padding:0 20px}

/* 隐藏干扰标签 */
.nw-cxjdp4e{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}

/* 跳转链接 */
.skip-to{position:absolute;top:-100px;left:0;background:var(--vmtz-red);color:#fff;padding:8px 16px;z-index:9999;transition:top .2s}
.skip-to:focus{top:0;color:#fff}

/* ====== 头部导航 ====== */
.site-header{background:var(--vmtz-black);position:sticky;top:0;z-index:1000;border-bottom:2px solid var(--vmtz-red)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;max-width:var(--max-w);margin:0 auto;padding:0 20px}
.logo-link{display:flex;align-items:center;gap:8px}
.logo-link img{height:40px;width:auto}
.main-nav{display:flex;gap:4px}
.main-nav a{color:var(--vmtz-silver);padding:8px 16px;border-radius:8px;font-size:15px;font-weight:500;transition:all .2s}
.main-nav a:hover,.main-nav a.active{color:#fff;background:rgba(232,69,60,0.15)}

/* 搜索框 */
.header-search{display:flex;align-items:center;gap:8px}
.header-search input{background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.12);color:#fff;padding:7px 14px;border-radius:20px;width:180px;font-size:14px;outline:none;transition:all .2s}
.header-search input:focus{border-color:var(--vmtz-red);background:rgba(255,255,255,0.12);width:220px}
.header-search input::placeholder{color:rgba(255,255,255,0.4)}
.header-search button{background:var(--vmtz-red);color:#fff;border:none;padding:7px 14px;border-radius:20px;cursor:pointer;font-size:14px;transition:background .2s}
.header-search button:hover{background:var(--vmtz-red-dark)}

/* ====== Hero Banner ====== */
.hero{position:relative;height:520px;overflow:hidden;display:flex;align-items:center}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(0.45)}
.hero-content{position:relative;z-index:2;max-width:var(--max-w);margin:0 auto;padding:0 20px;color:#fff}
.hero h1{font-size:42px;font-weight:800;margin-bottom:12px;text-shadow:0 2px 12px rgba(0,0,0,0.5)}
.hero h1 em{font-style:normal;color:var(--vmtz-red)}
.hero .lead{font-size:18px;max-width:640px;opacity:0.9;line-height:1.8;margin-bottom:24px}
.hero-tags{display:flex;gap:10px;flex-wrap:wrap}
.hero-tags span{background:rgba(232,69,60,0.25);border:1px solid rgba(232,69,60,0.4);color:#fff;padding:5px 14px;border-radius:20px;font-size:13px}

/* ====== 通用区块 ====== */
.section{padding:64px 0}
.section-alt{background:#fff}
.section-dark{background:var(--vmtz-dark);color:#fff}
.section-dark .sec-title{color:#fff}
.section-dark .sec-desc{color:var(--vmtz-silver)}
.sec-title{font-size:28px;font-weight:700;text-align:center;margin-bottom:8px;color:var(--vmtz-text)}
.sec-desc{text-align:center;color:var(--vmtz-gray);margin-bottom:40px;font-size:15px}

/* ====== 视频卡片网格 ====== */
.vid-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.vid-card{background:#fff;border-radius:var(--vmtz-radius);overflow:hidden;box-shadow:var(--vmtz-shadow);transition:transform .25s,box-shadow .25s;cursor:pointer}
.vid-card:hover{transform:translateY(-4px);box-shadow:0 12px 36px rgba(0,0,0,0.12)}
.vid-thumb{position:relative;padding-top:56.25%;overflow:hidden}
.vid-thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .3s}
.vid-card:hover .vid-thumb img{transform:scale(1.05)}
.play-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.35);opacity:0;transition:opacity .25s}
.vid-card:hover .play-overlay{opacity:1}
.play-btn{width:56px;height:56px;background:var(--vmtz-red);border-radius:50%;display:flex;align-items:center;justify-content:center;border:none;cursor:pointer;transition:transform .2s}
.play-btn:hover{transform:scale(1.1)}
.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:3px}
.vid-info{padding:16px}
.vid-info h3{font-size:16px;font-weight:600;margin-bottom:6px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.vid-meta{display:flex;gap:12px;color:var(--vmtz-gray);font-size:13px}
.vid-meta span{display:flex;align-items:center;gap:4px}
.vid-tag{display:inline-block;background:rgba(232,69,60,0.08);color:var(--vmtz-red);padding:2px 8px;border-radius:4px;font-size:12px;margin-top:8px}

/* ====== 分类标签栏 ====== */
.cat-tabs{display:flex;gap:8px;justify-content:center;margin-bottom:32px;flex-wrap:wrap}
.cat-tabs span{padding:8px 20px;border-radius:24px;font-size:14px;cursor:pointer;transition:all .2s;border:1px solid var(--vmtz-border);color:var(--vmtz-gray)}
.cat-tabs span:hover,.cat-tabs span.on{background:var(--vmtz-red);color:#fff;border-color:var(--vmtz-red)}

/* ====== 专家卡片 ====== */
.expert-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.expert-card{background:#fff;border-radius:var(--vmtz-radius);padding:28px;text-align:center;box-shadow:var(--vmtz-shadow);transition:transform .2s}
.expert-card:hover{transform:translateY(-3px)}
.expert-card img{width:96px;height:96px;border-radius:50%;object-fit:cover;margin:0 auto 16px;border:3px solid var(--vmtz-red)}
.expert-card h4{font-size:17px;font-weight:600;margin-bottom:4px}
.expert-card .role{color:var(--vmtz-red);font-size:13px;margin-bottom:10px}
.expert-card p{font-size:14px;color:var(--vmtz-gray);line-height:1.6}
.expert-btns{display:flex;gap:8px;justify-content:center;margin-top:14px}
.expert-btns a{padding:6px 16px;border-radius:20px;font-size:13px;border:1px solid var(--vmtz-border);color:var(--vmtz-text);transition:all .2s}
.expert-btns a:hover{background:var(--vmtz-red);color:#fff;border-color:var(--vmtz-red)}

/* ====== AI赋能模块 ====== */
.ai-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:24px}
.ai-card{background:linear-gradient(135deg,#1A1A2E 0%,#2D2D4A 100%);border-radius:var(--vmtz-radius);padding:32px 24px;color:#fff;text-align:center;transition:transform .2s}
.ai-card:hover{transform:translateY(-3px)}
.ai-icon{font-size:36px;margin-bottom:14px}
.ai-card h4{font-size:17px;margin-bottom:8px}
.ai-card p{font-size:14px;color:var(--vmtz-silver);line-height:1.6}

/* ====== FAQ ====== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid var(--vmtz-border);border-radius:var(--vmtz-radius);margin-bottom:12px;overflow:hidden}
.faq-item summary{padding:18px 24px;font-size:16px;font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;transition:background .2s}
.faq-item summary:hover{background:rgba(232,69,60,0.04)}
.faq-item summary::after{content:'+';font-size:22px;color:var(--vmtz-red);font-weight:300;transition:transform .2s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 24px 18px;color:var(--vmtz-gray);font-size:15px;line-height:1.7}

/* ====== 用户评价 ====== */
.review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.review-card{background:#fff;border-radius:var(--vmtz-radius);padding:24px;box-shadow:var(--vmtz-shadow)}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.review-avatar{width:44px;height:44px;border-radius:50%;background:var(--vmtz-red);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px}
.review-name{font-weight:600;font-size:15px}
.review-date{font-size:12px;color:var(--vmtz-gray)}
.review-stars{color:#F59E0B;font-size:14px;margin-bottom:8px}
.review-card p{font-size:14px;color:var(--vmtz-gray);line-height:1.7}

/* ====== 合作品牌 ====== */
.brand-wall{display:flex;flex-wrap:wrap;justify-content:center;gap:32px;align-items:center}
.brand-wall span{font-size:20px;font-weight:700;color:var(--vmtz-silver);opacity:0.6;transition:opacity .2s;letter-spacing:1px}
.brand-wall span:hover{opacity:1}

/* ====== 联系我们 ====== */
.contact-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:24px}
.contact-card{background:#fff;border-radius:var(--vmtz-radius);padding:24px;box-shadow:var(--vmtz-shadow);text-align:center}
.contact-card h4{font-size:16px;font-weight:600;margin-bottom:10px;color:var(--vmtz-text)}
.contact-card p{font-size:14px;color:var(--vmtz-gray);line-height:1.6}

/* ====== 分享按钮 ====== */
.share-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.share-btn{padding:8px 20px;border-radius:24px;border:1px solid var(--vmtz-border);color:var(--vmtz-text);font-size:14px;cursor:pointer;background:#fff;transition:all .2s}
.share-btn:hover{background:var(--vmtz-red);color:#fff;border-color:var(--vmtz-red)}

/* ====== 页脚 ====== */
.site-footer{background:var(--vmtz-black);color:var(--vmtz-silver);padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:32px;margin-bottom:32px}
.footer-col h5{color:#fff;font-size:16px;margin-bottom:14px}
.footer-col a{display:block;color:var(--vmtz-silver);font-size:14px;padding:3px 0;transition:color .2s}
.footer-col a:hover{color:var(--vmtz-red)}
.footer-col p{font-size:14px;line-height:1.7}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding-top:20px;text-align:center;font-size:13px;color:rgba(255,255,255,0.4)}

/* ====== 内页通用 ====== */
.page-hero{background:var(--vmtz-dark);color:#fff;padding:56px 0 40px;text-align:center}
.page-hero h1{font-size:32px;font-weight:700;margin-bottom:8px}
.page-hero .breadcrumb{font-size:14px;color:var(--vmtz-silver)}
.page-hero .breadcrumb a{color:var(--vmtz-silver)}
.page-hero .breadcrumb a:hover{color:var(--vmtz-red)}
.page-content{padding:48px 0}

/* ====== Toast ====== */
.toast{position:fixed;bottom:40px;left:50%;transform:translateX(-50%) translateY(80px);background:var(--vmtz-dark);color:#fff;padding:12px 28px;border-radius:28px;font-size:14px;z-index:9999;opacity:0;transition:all .3s;pointer-events:none}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ====== 回到顶部 ====== */
.back-top{position:fixed;bottom:32px;right:32px;width:44px;height:44px;border-radius:50%;background:var(--vmtz-red);color:#fff;border:none;font-size:20px;cursor:pointer;opacity:0;transform:translateY(20px);transition:all .3s;z-index:999;box-shadow:0 4px 16px rgba(232,69,60,0.3)}
.back-top.visible{opacity:1;transform:translateY(0)}
.back-top:hover{background:var(--vmtz-red-dark)}

/* ====== 响应式 ====== */
@media(max-width:768px){
  .header-inner{flex-wrap:wrap;height:auto;padding:12px 16px;gap:8px}
  .main-nav{order:3;width:100%;overflow-x:auto;padding-bottom:4px}
  .main-nav a{font-size:14px;padding:6px 12px;white-space:nowrap}
  .header-search{order:2}
  .header-search input{width:120px}
  .hero{height:380px}
  .hero h1{font-size:28px}
  .hero .lead{font-size:15px}
  .section{padding:40px 0}
  .sec-title{font-size:22px}
  .vid-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
  .expert-grid{grid-template-columns:1fr}
  .ai-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .hero{height:300px}
  .hero h1{font-size:22px}
  .vid-grid{grid-template-columns:1fr}
  .ai-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}