/* 91修车改装 原创CSS | 配色：赛车红 #e8350e / 橙 #ff6a00 / 深灰 #1a1a2e */
*{margin:0;padding:0;box-sizing:border-box}
:root{--red:#e8350e;--orange:#ff6a00;--dark:#1a1a2e;--darker:#0f0f1a;--gray:#2d2d44;--light:#f5f5fa;--text:#e0e0e8;--muted:#8888a0}
html{scroll-behavior:smooth}
body{font-family:'PingFang SC','Microsoft YaHei','Helvetica Neue',sans-serif;background:var(--darker);color:var(--text);line-height:1.7}
a{color:var(--orange);text-decoration:none;transition:color .2s}
a:hover{color:var(--red)}
img{max-width:100%;height:auto;display:block}

/* Container */
.jn-container{max-width:1200px;margin:0 auto;padding:0 20px}

/* Header */
.jn-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(15,15,26,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(232,53,14,.15);transition:all .3s}
.jn-header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.jn-logo img{height:42px;width:auto}
.jn-nav{display:flex;gap:6px}
.jn-nav a{color:var(--text);padding:8px 16px;border-radius:6px;font-size:15px;font-weight:500;transition:all .25s}
.jn-nav a:hover,.jn-nav a.active{color:#fff;background:linear-gradient(135deg,var(--red),var(--orange))}
.jn-mobile-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.jn-mobile-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:all .3s}
.jn-mobile-menu{display:none;flex-direction:column;background:var(--dark);border-top:1px solid rgba(232,53,14,.15)}
.jn-mobile-menu.show{display:flex}
.jn-mobile-menu a{padding:14px 20px;color:var(--text);border-bottom:1px solid rgba(255,255,255,.05);font-size:15px}
.jn-mobile-menu a:hover,.jn-mobile-menu a.active{color:var(--red);background:rgba(232,53,14,.08)}

/* Search */
.jn-search-box{margin:88px auto 0;max-width:640px;padding:0 20px}
.jn-search-wrap{display:flex;background:var(--gray);border:2px solid rgba(232,53,14,.2);border-radius:50px;overflow:hidden;transition:border-color .3s}
.jn-search-wrap:focus-within{border-color:var(--red)}
.jn-search-wrap input{flex:1;padding:14px 24px;background:transparent;border:none;color:var(--text);font-size:15px;outline:none}
.jn-search-wrap input::placeholder{color:var(--muted)}
.jn-search-wrap button{padding:14px 28px;background:linear-gradient(135deg,var(--red),var(--orange));color:#fff;border:none;font-size:15px;font-weight:600;cursor:pointer;transition:opacity .2s}
.jn-search-wrap button:hover{opacity:.85}

/* Hero */
.jn-hero{position:relative;min-height:600px;display:flex;align-items:center;justify-content:center;text-align:center;overflow:hidden;margin-top:68px}
.jn-hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.35)}
.jn-hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(15,15,26,.3) 0%,rgba(15,15,26,.85) 100%)}
.jn-hero-content{position:relative;z-index:2;padding:60px 20px}
.jn-hero h1{font-size:48px;font-weight:900;color:#fff;margin-bottom:16px;text-shadow:0 2px 20px rgba(232,53,14,.3)}
.jn-hero h1 em{font-style:normal;background:linear-gradient(135deg,var(--red),var(--orange));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.jn-hero p{font-size:18px;color:var(--muted);max-width:700px;margin:0 auto 30px}
.jn-hero-tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.jn-hero-tags span{padding:6px 18px;background:rgba(232,53,14,.12);border:1px solid rgba(232,53,14,.25);border-radius:20px;font-size:13px;color:var(--orange)}

/* Inner Hero */
.jn-inner-hero{padding:120px 0 50px;background:linear-gradient(180deg,var(--dark) 0%,var(--darker) 100%);text-align:center}
.jn-inner-hero h1{font-size:36px;font-weight:800;color:#fff;margin-bottom:12px}
.jn-inner-hero h1 em{font-style:normal;background:linear-gradient(135deg,var(--red),var(--orange));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.jn-inner-hero p{color:var(--muted);font-size:16px;max-width:600px;margin:0 auto}
.jn-breadcrumb{font-size:13px;color:var(--muted);margin-bottom:20px}
.jn-breadcrumb a{color:var(--orange)}

/* Sections */
.jn-section{padding:70px 0}
.jn-section-alt{background:var(--dark)}
.jn-section-dark{background:linear-gradient(135deg,var(--dark) 0%,rgba(232,53,14,.06) 100%)}
.jn-section-title{text-align:center;margin-bottom:50px}
.jn-section-title h2{font-size:32px;font-weight:800;color:#fff;margin-bottom:12px}
.jn-section-title h2 em{font-style:normal;background:linear-gradient(135deg,var(--red),var(--orange));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.jn-section-title p{color:var(--muted);font-size:15px;max-width:600px;margin:0 auto}

/* Service Grid */
.jn-service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.jn-service-card{background:var(--gray);border-radius:16px;padding:32px 24px;text-align:center;border:1px solid rgba(255,255,255,.04);transition:all .3s}
.jn-service-card:hover{transform:translateY(-6px);border-color:rgba(232,53,14,.3);box-shadow:0 12px 40px rgba(232,53,14,.1)}
.jn-service-icon{width:64px;height:64px;margin:0 auto 18px;background:linear-gradient(135deg,var(--red),var(--orange));border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px}
.jn-service-card h3{font-size:18px;font-weight:700;color:#fff;margin-bottom:10px}
.jn-service-card p{font-size:14px;color:var(--muted);line-height:1.6}

/* Video Grid */
.jn-video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.jn-video-card{background:var(--gray);border-radius:14px;overflow:hidden;border:1px solid rgba(255,255,255,.04);transition:all .3s}
.jn-video-card:hover{transform:translateY(-4px);border-color:rgba(232,53,14,.25);box-shadow:0 8px 30px rgba(232,53,14,.08)}
.jn-video-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#111}
.jn-video-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.jn-video-card:hover .jn-video-thumb img{transform:scale(1.06)}
.jn-play-btn{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:56px;height:56px;background:rgba(232,53,14,.85);border-radius:50%;opacity:0;transition:opacity .3s;display:flex;align-items:center;justify-content:center}
.jn-play-btn::after{content:'';border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;margin-left:4px}
.jn-video-card:hover .jn-play-btn{opacity:1}
.jn-video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;padding:2px 8px;border-radius:4px;font-size:12px;font-weight:600}
.jn-video-info{padding:16px}
.jn-video-info h3{font-size:15px;font-weight:600;color:#fff;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.jn-video-meta{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted)}
.jn-video-stats{display:flex;gap:12px}

/* Entertainment */
.jn-ent-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.jn-ent-card{position:relative;border-radius:14px;overflow:hidden;aspect-ratio:3/4;cursor:pointer}
.jn-ent-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.jn-ent-card:hover img{transform:scale(1.08)}
.jn-ent-overlay{position:absolute;inset:0;background:linear-gradient(0deg,rgba(0,0,0,.8) 0%,transparent 60%);display:flex;flex-direction:column;justify-content:flex-end;padding:20px}
.jn-ent-overlay h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:4px}
.jn-ent-overlay p{color:var(--muted);font-size:12px}

/* AI Section */
.jn-ai-flex{display:flex;gap:50px;align-items:center}
.jn-ai-img{flex:1;border-radius:16px;overflow:hidden}
.jn-ai-content{flex:1}
.jn-ai-content h2{font-size:30px;font-weight:800;color:#fff;margin-bottom:16px}
.jn-ai-content h2 em{font-style:normal;background:linear-gradient(135deg,var(--red),var(--orange));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.jn-ai-content p{color:var(--muted);margin-bottom:16px;line-height:1.8}
.jn-ai-features{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:20px}
.jn-ai-feat{display:flex;align-items:center;gap:10px;padding:12px 16px;background:rgba(232,53,14,.06);border-radius:10px;border:1px solid rgba(232,53,14,.12)}
.jn-ai-feat-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--red),var(--orange));border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:16px;flex-shrink:0}
.jn-ai-feat span{font-size:13px;color:var(--text);font-weight:500}

/* Community */
.jn-comm-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.jn-comm-card{background:var(--gray);border-radius:14px;padding:28px 22px;text-align:center;border:1px solid rgba(255,255,255,.04);transition:all .3s}
.jn-comm-card:hover{border-color:rgba(232,53,14,.25);transform:translateY(-4px)}
.jn-comm-icon{width:52px;height:52px;margin:0 auto 14px;background:linear-gradient(135deg,var(--red),var(--orange));border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px}
.jn-comm-card h4{font-size:16px;font-weight:700;color:#fff;margin-bottom:8px}
.jn-comm-card p{font-size:13px;color:var(--muted);line-height:1.6}

/* Expert */
.jn-expert-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.jn-expert-card{background:var(--gray);border-radius:14px;padding:28px 20px;text-align:center;border:1px solid rgba(255,255,255,.04);transition:all .3s}
.jn-expert-card:hover{border-color:rgba(232,53,14,.25);transform:translateY(-4px)}
.jn-expert-avatar{width:72px;height:72px;margin:0 auto 14px;background:linear-gradient(135deg,var(--red),var(--orange));border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:28px;color:#fff;font-weight:800}
.jn-expert-card h4{font-size:16px;font-weight:700;color:#fff;margin-bottom:4px}
.jn-expert-role{font-size:12px;color:var(--orange);margin-bottom:10px;font-weight:600}
.jn-expert-card p{font-size:13px;color:var(--muted);line-height:1.6}

/* Cooperation */
.jn-brand-wall{display:flex;flex-wrap:wrap;gap:20px;justify-content:center}
.jn-brand-item{width:160px;height:80px;background:var(--gray);border-radius:12px;display:flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.04);font-size:15px;font-weight:700;color:var(--muted);transition:all .3s}
.jn-brand-item:hover{border-color:rgba(232,53,14,.25);color:var(--orange)}

/* How-To */
.jn-howto-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.jn-howto-step{background:var(--gray);border-radius:14px;padding:30px 22px;text-align:center;border:1px solid rgba(255,255,255,.04);position:relative;counter-increment:step}
.jn-howto-step::before{content:counter(step);position:absolute;top:-14px;left:50%;transform:translateX(-50%);width:32px;height:32px;background:linear-gradient(135deg,var(--red),var(--orange));border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:800;color:#fff;line-height:32px}
.jn-howto-step h4{font-size:16px;font-weight:700;color:#fff;margin:10px 0 8px}
.jn-howto-step p{font-size:13px;color:var(--muted);line-height:1.6}

/* FAQ */
.jn-faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.jn-faq-item{background:var(--gray);border-radius:12px;padding:22px 26px;border:1px solid rgba(255,255,255,.04)}
.jn-faq-item h4{font-size:16px;font-weight:700;color:#fff;margin-bottom:10px;cursor:pointer}
.jn-faq-item h4::before{content:'Q: ';color:var(--red);font-weight:800}
.jn-faq-item p{font-size:14px;color:var(--muted);line-height:1.7}
.jn-faq-item p::before{content:'A: ';color:var(--orange);font-weight:700}

/* Reviews */
.jn-review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.jn-review-card{background:var(--gray);border-radius:14px;padding:26px 22px;border:1px solid rgba(255,255,255,.04)}
.jn-review-stars{color:var(--orange);font-size:14px;margin-bottom:12px;letter-spacing:2px}
.jn-review-card p{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:14px;font-style:italic}
.jn-review-author{display:flex;align-items:center;gap:10px}
.jn-review-avatar{width:38px;height:38px;background:linear-gradient(135deg,var(--red),var(--orange));border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;color:#fff;font-weight:700}
.jn-review-name{font-size:13px;color:#fff;font-weight:600}
.jn-review-date{font-size:11px;color:var(--muted)}

/* Contact */
.jn-contact-grid{display:grid;grid-template-columns:2fr 1fr;gap:40px;align-items:start}
.jn-contact-info{display:flex;flex-direction:column;gap:22px}
.jn-contact-item{display:flex;gap:16px;align-items:flex-start}
.jn-contact-icon{width:48px;height:48px;background:linear-gradient(135deg,var(--red),var(--orange));border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.jn-contact-item h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:4px}
.jn-contact-item p{font-size:13px;color:var(--muted);line-height:1.6}
.jn-contact-qr{display:flex;gap:24px;justify-content:center}
.jn-contact-qr figure{text-align:center}
.jn-contact-qr img{width:140px;height:140px;border-radius:10px}
.jn-contact-qr figcaption{font-size:12px;color:var(--muted);margin-top:8px}

/* Share */
.jn-share-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.jn-share-btn{padding:12px 28px;border-radius:50px;font-size:14px;font-weight:600;color:#fff;border:none;cursor:pointer;transition:all .25s}
.jn-share-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.3)}
.jn-share-wechat{background:#07c160}
.jn-share-weibo{background:#e6162d}
.jn-share-douyin{background:#111;border:1px solid #333}
.jn-share-bilibili{background:#00a1d6}

/* Footer */
.jn-footer{background:var(--dark);border-top:1px solid rgba(232,53,14,.1);padding:50px 0 0}
.jn-footer-top{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.05)}
.jn-footer-brand{display:flex;flex-direction:column;gap:14px}
.jn-footer-brand img{height:38px;width:auto}
.jn-footer-brand p{font-size:13px;color:var(--muted);line-height:1.7;max-width:360px}
.jn-footer-links h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
.jn-footer-links a{display:block;font-size:13px;color:var(--muted);padding:4px 0;transition:color .2s}
.jn-footer-links a:hover{color:var(--orange)}
.jn-footer-bottom{padding:20px 0;text-align:center;font-size:12px;color:var(--muted);display:flex;justify-content:space-between;align-items:center}

/* Toast */
.jn-toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(100px);background:linear-gradient(135deg,var(--red),var(--orange));color:#fff;padding:14px 32px;border-radius:50px;font-size:14px;font-weight:600;z-index:9999;opacity:0;transition:all .4s;pointer-events:none}
.jn-toast.show{transform:translateX(-50%) translateY(0);opacity:1}

/* MCP Hidden */
.jn-mcp-data{display:none}

/* Responsive */
@media(max-width:1024px){
  .jn-service-grid,.jn-video-grid,.jn-comm-grid,.jn-review-grid{grid-template-columns:repeat(2,1fr)}
  .jn-ent-grid{grid-template-columns:repeat(2,1fr)}
  .jn-expert-grid{grid-template-columns:repeat(2,1fr)}
  .jn-howto-steps{grid-template-columns:repeat(2,1fr)}
  .jn-ai-flex{flex-direction:column}
  .jn-contact-grid{grid-template-columns:1fr}
  .jn-footer-top{grid-template-columns:1fr}
}
@media(max-width:768px){
  .jn-nav{display:none}
  .jn-mobile-toggle{display:flex}
  .jn-hero h1{font-size:30px}
  .jn-hero p{font-size:15px}
  .jn-section-title h2{font-size:24px}
  .jn-service-grid,.jn-video-grid,.jn-comm-grid,.jn-review-grid,.jn-expert-grid,.jn-howto-steps,.jn-ent-grid{grid-template-columns:1fr}
  .jn-ai-features{grid-template-columns:1fr}
  .jn-footer-bottom{flex-direction:column;gap:8px}
  .jn-contact-qr{flex-direction:column;align-items:center}
  .jn-brand-wall{gap:12px}
  .jn-brand-item{width:130px;height:60px;font-size:13px}
}