:root{
      --bg:#0c0a18;
      --surface:#141126;
      --surface-2:#1b1630;
      --line:#352b54;
      --text:#f6f3ff;
      --muted:#b8b0ca;
      --pink:#ff3fa4;
      --violet:#8b5cf6;
      --cyan:#42d9ff;
      --lime:#b7f36b;
      --container:1180px;
      --shadow:0 18px 50px rgba(0,0,0,.25);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      background:var(--bg);
      color:var(--text);
      font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
      line-height:1.7;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;height:auto;display:block}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:20;
      background:rgba(12,10,24,.94);
      border-bottom:1px solid rgba(139,92,246,.25);
      backdrop-filter:blur(16px)
    }
    .header-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
    .ai-page-logo{width:42px;max-height:42px;object-fit:contain}
    .brand strong{font-size:18px;letter-spacing:1px}
    .brand small{display:block;color:var(--muted);font-size:11px;line-height:1.2}
    .nav-links{display:flex;gap:0;align-items:center;justify-content:flex-end;flex-wrap:wrap}
    .nav-links a{color:#ddd6ee;font-size:13px;padding:8px 10px;transition:.25s}
    .nav-links a:hover{color:var(--cyan)}
    .nav-cta{border:1px solid var(--pink);color:#fff!important;padding:8px 14px!important;margin-left:8px}
    .menu-toggle{display:none;background:transparent;border:1px solid var(--line);color:#fff;padding:7px 10px;font-size:18px}
    .hero{position:relative;min-height:650px;display:flex;align-items:center;border-bottom:1px solid var(--line);overflow:hidden}
    .hero:before,.hero:after{content:"";position:absolute;pointer-events:none}
    .hero:before{width:260px;height:260px;border:1px solid rgba(255,63,164,.35);right:8%;top:14%;transform:rotate(24deg)}
    .hero:after{width:180px;height:180px;border:1px solid rgba(66,217,255,.25);right:20%;bottom:-70px;transform:rotate(45deg)}
    .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:70px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--cyan);font-size:13px;letter-spacing:2px;text-transform:uppercase}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--pink)}
    h1,h2,h3{line-height:1.2;margin:0 0 18px}
    h1{font-size:clamp(42px,6vw,76px);max-width:700px;letter-spacing:0}
    h2{font-size:clamp(28px,4vw,46px)}
    h3{font-size:20px}
    .hero-copy{font-size:18px;color:var(--muted);max-width:680px}
    .actions{display:flex;gap:13px;flex-wrap:wrap;margin:30px 0}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 20px;border:1px solid var(--pink);background:var(--pink);color:#170b1c;font-weight:700;transition:.25s;cursor:pointer}
    .btn:hover{transform:translateY(-3px);box-shadow:0 10px 24px rgba(255,63,164,.25)}
    .btn.secondary{background:transparent;color:var(--text);border-color:var(--violet)}
    .hero-note{color:#9b91b2;font-size:13px}
    .signal-panel{border-left:2px solid var(--pink);padding:25px 0 25px 28px}
    .signal-panel strong{display:block;font-size:54px;color:var(--lime);line-height:1}
    .signal-panel p{color:var(--muted);margin:8px 0 25px}
    .signal-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .signal-list div{border-top:1px solid var(--line);padding-top:10px;color:#d9d0ea;font-size:14px}
    section{padding:96px 0;border-bottom:1px solid rgba(53,43,84,.8)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:38px}
    .section-head p{max-width:570px;color:var(--muted);margin:0}
    .kicker{color:var(--pink);font-size:13px;letter-spacing:2px;margin-bottom:11px}
    .intro-layout{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
    .intro-layout p{color:var(--muted);font-size:16px}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
    .metric{background:var(--surface);padding:25px}
    .metric b{display:block;font-size:34px;color:var(--cyan)}
    .metric span{color:var(--muted);font-size:13px}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .service-card{background:var(--surface);border:1px solid var(--line);padding:22px;min-height:205px;transition:.25s}
    .service-card:hover{transform:translateY(-5px);border-color:var(--pink);box-shadow:var(--shadow)}
    .service-card .index{color:var(--pink);font-size:12px;letter-spacing:2px}
    .service-card p{color:var(--muted);font-size:14px;margin-bottom:0}
    .workflow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--violet)}
    .step{padding:26px 20px 10px;border-right:1px solid var(--line);position:relative}
    .step:last-child{border-right:0}
    .step b{color:var(--cyan);font-size:30px;display:block;margin-bottom:12px}
    .step p{color:var(--muted);font-size:14px}
    .tag-cloud{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
    .tag{padding:8px 12px;border:1px solid var(--line);color:#dcd3ed;font-size:13px;background:#111022}
    .tag:nth-child(3n){border-color:var(--pink);color:#ff9bce}
    .tag:nth-child(4n){border-color:var(--cyan);color:#9beaff}
    .solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .solution{border-top:3px solid var(--violet);background:var(--surface);padding:23px}
    .solution p{color:var(--muted);font-size:14px}
    .media-strip{display:grid;grid-template-columns:1.15fr 1fr 1fr;gap:16px;margin-top:28px}
    .media-strip figure{margin:0;background:var(--surface);border:1px solid var(--line);padding:10px}
    .media-strip img{width:100%;aspect-ratio:16/9;object-fit:cover}
    .media-strip figcaption{font-size:12px;color:var(--muted);padding:8px 4px 2px}
    .comparison-wrap{overflow-x:auto;border:1px solid var(--line)}
    table{width:100%;min-width:760px;border-collapse:collapse;background:var(--surface)}
    th,td{text-align:left;padding:16px;border-bottom:1px solid var(--line);font-size:14px}
    th{color:var(--cyan);background:#18132b;font-weight:600}
    td{color:#d7d0e6}
    td:first-child{color:#fff;font-weight:600}
    .rating{display:flex;align-items:center;gap:22px;margin-bottom:25px}
    .rating strong{font-size:44px;color:var(--lime)}
    .stars{color:#ffcb4d;letter-spacing:4px;font-size:21px}
    .case-grid,.review-grid,.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .case,.review,.article{background:var(--surface);border:1px solid var(--line);padding:22px}
    .case{border-left:3px solid var(--pink)}
    .case p,.review p,.article p{color:var(--muted);font-size:14px}
    .case strong,.review strong{display:block;margin-top:18px;color:#fff}
    .review .quote{font-size:22px;color:var(--pink)}
    .article a{color:var(--cyan);font-weight:600}
    .article small{color:#887f9d}
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .price{padding:25px;background:#17122a;border:1px solid var(--line)}
    .price b{font-size:27px;color:var(--lime)}
    .price p{color:var(--muted);font-size:14px}
    .price .bar{height:5px;background:var(--pink);margin:18px 0}
    .faq-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    details{background:var(--surface);border:1px solid var(--line);padding:17px 19px}
    summary{cursor:pointer;font-weight:600;color:#fff}
    details p{color:var(--muted);font-size:14px;margin:12px 0 0}
    .contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:start}
    .contact-info{border-left:3px solid var(--pink);padding-left:25px}
    .contact-info p{color:var(--muted)}
    .qr{width:150px;margin-top:20px;border:8px solid #fff}
    form{display:grid;grid-template-columns:1fr 1fr;gap:15px;background:var(--surface);padding:25px;border:1px solid var(--line)}
    label{display:grid;gap:7px;color:#dcd3ed;font-size:13px}
    label.full{grid-column:1/-1}
    input,select,textarea{width:100%;background:#0f0d1e;border:1px solid var(--line);color:#fff;padding:12px 13px;font:inherit;outline:none}
    input:focus,select:focus,textarea:focus{border-color:var(--cyan)}
    textarea{min-height:130px;resize:vertical}
    form .btn{border:0}
    .join-band{display:flex;justify-content:space-between;align-items:center;gap:25px;background:#18102b;border-left:4px solid var(--cyan);padding:30px}
    .join-band p{margin:0;color:var(--muted)}
    footer{background:#080711;color:#c7bfd7;padding:50px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:35px}
    footer h3{font-size:17px;color:#fff}
    footer p,footer li{font-size:13px;color:#978da9}
    footer ul{list-style:none;padding:0;margin:0;display:grid;gap:7px}
    .footer-links{display:flex;gap:10px;flex-wrap:wrap}
    .footer-links a{font-size:13px;color:#b9eefd}
    .copyright{border-top:1px solid #28223a;margin-top:35px;padding-top:18px;color:#766d85;font-size:12px}
    .float-contact{position:fixed;right:20px;bottom:20px;z-index:15;background:var(--pink);color:#16091a;padding:12px 16px;font-weight:700;box-shadow:0 8px 25px rgba(0,0,0,.35)}
    .reveal{opacity:0;transform:translateY(18px);transition:.7s ease}
    .reveal.visible{opacity:1;transform:none}
    @media(max-width:1000px){
      .nav-links a{padding:7px 6px;font-size:12px}
      .service-grid{grid-template-columns:repeat(2,1fr)}
      .workflow{grid-template-columns:repeat(3,1fr);row-gap:20px}
      .step:nth-child(3){border-right:0}
      .metrics{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:720px){
      .container{width:min(var(--container),calc(100% - 28px))}
      .header-inner{min-height:68px}
      .menu-toggle{display:block}
      .nav-links{display:none;position:absolute;left:14px;right:14px;top:68px;padding:10px;background:#151127;border:1px solid var(--line);align-items:stretch}
      .nav-links.open{display:flex}
      .nav-links a{width:100%;padding:10px 12px}
      .nav-cta{margin-left:0!important}
      .hero{min-height:670px}
      .hero-grid,.intro-layout,.contact-grid{grid-template-columns:1fr;gap:35px}
      h1{font-size:43px}
      .signal-panel{padding-left:20px}
      section{padding:68px 0}
      .section-head{display:block}
      .section-head p{margin-top:15px}
      .service-grid,.solution-grid,.case-grid,.review-grid,.article-grid,.price-grid{grid-template-columns:1fr}
      .workflow{grid-template-columns:1fr 1fr}
      .step:nth-child(2){border-right:0}
      .step:nth-child(3){border-right:1px solid var(--line)}
      .step:nth-child(4){border-right:0}
      .faq-list{grid-template-columns:1fr}
      .media-strip{grid-template-columns:1fr}
      form{grid-template-columns:1fr}
      label.full{grid-column:auto}
      .join-band{display:block}
      .join-band .btn{margin-top:18px}
      .footer-grid{grid-template-columns:1fr}
    }
    @media(prefers-reduced-motion:reduce){
      *,html{scroll-behavior:auto!important;transition:none!important}
      .reveal{opacity:1;transform:none}
    }