:root{
      --blue:#1457d9;
      --blue-deep:#082d78;
      --blue-soft:#eaf2ff;
      --cyan:#22b9df;
      --ink:#10234b;
      --muted:#61708f;
      --line:#dce6f6;
      --paper:#ffffff;
      --wash:#f5f8fe;
      --orange:#f28b36;
      --shadow:0 18px 50px rgba(20,63,137,.12);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--wash);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;height:auto;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .topline{height:4px;background:linear-gradient(90deg,var(--blue-deep),var(--blue),var(--cyan))}
    header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}
    .nav{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;height:42px;object-fit:contain}
    .brand-name{font-weight:800;font-size:19px;letter-spacing:0;color:var(--blue-deep)}
    .brand-sub{display:block;font-size:11px;color:var(--muted);line-height:1.2}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;flex-wrap:nowrap}
    .nav-links a{font-size:13px;color:#34466c;padding:9px 10px;border-radius:8px;white-space:nowrap}
    .nav-links a:hover{color:var(--blue);background:var(--blue-soft)}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:9px;padding:12px 19px;background:var(--blue);color:#fff;font-weight:700;cursor:pointer;transition:.25s ease;box-shadow:0 8px 20px rgba(20,87,217,.2)}
    .nav-cta{margin-left:12px;padding:10px 15px;font-size:13px}
    .button:hover,.nav-cta:hover{background:var(--blue-deep);transform:translateY(-2px);box-shadow:0 12px 24px rgba(20,87,217,.25)}
    .button.alt{background:#fff;color:var(--blue);border:1px solid #b8cdf5;box-shadow:none}
    .button.alt:hover{background:var(--blue-soft)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px 10px;color:var(--blue);font-size:20px}
    .hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#082d78 0%,#1457d9 58%,#1e9ed1 100%);color:#fff}
    .hero:before,.hero:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.18);transform:rotate(25deg);pointer-events:none}
    .hero:before{width:420px;height:420px;right:-130px;top:-150px;border-radius:42px}
    .hero:after{width:260px;height:260px;left:-100px;bottom:-150px;border-radius:50%}
    .hero-inner{position:relative;z-index:1;padding:86px 0 72px;display:grid;grid-template-columns:1.12fr .88fr;gap:58px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:1.5px;font-weight:700;color:#bcefff;margin-bottom:16px}
    .eyebrow:before{content:"";width:28px;height:2px;background:var(--cyan)}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(34px,5vw,62px);line-height:1.12;letter-spacing:0;margin-bottom:22px;max-width:680px}
    .hero-copy{font-size:18px;color:#e6f2ff;max-width:650px;margin-bottom:30px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero .button{background:#fff;color:var(--blue-deep);box-shadow:none}
    .hero .button.alt{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
    .signal-panel{border:1px solid rgba(255,255,255,.28);background:rgba(255,255,255,.1);padding:22px;border-radius:18px;backdrop-filter:blur(6px)}
    .signal-title{font-size:13px;color:#bcefff;margin-bottom:18px}
    .signal-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .signal-item{padding:16px;border-left:2px solid var(--cyan);background:rgba(4,32,88,.25)}
    .signal-item strong{display:block;font-size:25px;line-height:1.2}
    .signal-item span{font-size:12px;color:#d7e8ff}
    .section{padding:82px 0}
    .section.white{background:#fff}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:34px}
    .section-kicker{font-size:12px;letter-spacing:2px;font-weight:800;color:var(--blue);text-transform:uppercase;margin-bottom:8px}
    h2{font-size:clamp(27px,3.5vw,42px);line-height:1.2;margin-bottom:10px;color:var(--blue-deep)}
    .section-intro{color:var(--muted);max-width:650px;margin-bottom:0}
    .text-link{color:var(--blue);font-weight:700;white-space:nowrap}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:-32px;position:relative;z-index:2}
    .metric{background:#fff;border:1px solid var(--line);padding:22px 20px;border-radius:12px;box-shadow:var(--shadow)}
    .metric strong{font-size:30px;color:var(--blue);display:block;line-height:1.2}
    .metric span{font-size:13px;color:var(--muted)}
    .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:start}
    .about-copy p{color:var(--muted)}
    .feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:22px}
    .feature{border-top:3px solid var(--blue);background:var(--blue-soft);padding:17px}
    .feature strong{display:block;margin-bottom:4px}
    .feature span{font-size:13px;color:var(--muted)}
    .network{border-left:1px solid var(--line);padding-left:32px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}
    .tag{border:1px solid #c5d7f4;border-radius:999px;padding:7px 12px;color:#315182;background:#fff;font-size:13px}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .service{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;transition:.25s ease}
    .service:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#a7c4f2}
    .service-icon{width:40px;height:40px;border-radius:10px;background:var(--blue-soft);color:var(--blue);display:grid;place-items:center;font-weight:800;margin-bottom:18px}
    .service h3{font-size:18px;margin-bottom:7px}
    .service p{font-size:13px;color:var(--muted);margin-bottom:0}
    .process{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid #b9cbed}
    .step{position:relative;padding:28px 22px 10px;border-right:1px solid var(--line)}
    .step:last-child{border-right:0}
    .step-number{position:absolute;top:-16px;left:22px;width:32px;height:32px;border-radius:50%;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:800}
    .step h3{font-size:18px;margin-top:16px}
    .step p{font-size:13px;color:var(--muted)}
    .solution-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .solution{background:#fff;border:1px solid var(--line);padding:24px;border-radius:12px}
    .solution h3{color:var(--blue-deep);margin-bottom:8px}
    .solution p{font-size:14px;color:var(--muted);margin-bottom:0}
    .comparison-wrap{display:grid;grid-template-columns:.72fr 1.28fr;gap:24px;align-items:start}
    .score{background:linear-gradient(145deg,#0b347e,#1457d9);color:#fff;border-radius:16px;padding:30px}
    .score small{color:#bcefff}
    .score strong{display:block;font-size:56px;line-height:1.15;margin:12px 0}
    .stars{color:#ffd36a;letter-spacing:4px;font-size:22px}
    .score p{color:#dceaff;font-size:14px}
    .table-scroll{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:12px}
    table{border-collapse:collapse;width:100%;min-width:620px}
    th,td{text-align:left;padding:15px 16px;border-bottom:1px solid var(--line);font-size:14px}
    th{background:#edf4ff;color:var(--blue-deep);font-weight:800}
    td:first-child{font-weight:700;color:var(--ink)}
    tr:last-child td{border-bottom:0}
    .yes{color:#167849;font-weight:700}
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price-item{background:#fff;border:1px solid var(--line);padding:25px;border-radius:12px}
    .price-item.featured{border:2px solid var(--blue);padding:24px;box-shadow:var(--shadow)}
    .price-item h3{margin-bottom:4px}
    .price-item .price{font-size:30px;font-weight:800;color:var(--blue);margin:10px 0}
    .price-item p{font-size:13px;color:var(--muted)}
    .case-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .case{background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
    .case-media{aspect-ratio:16/7;background:#dbe8fa;overflow:hidden}
    .case-media img{width:100%;height:100%;object-fit:cover}
    .case-body{padding:20px}
    .case-body h3{margin-bottom:6px}
    .case-body p{font-size:13px;color:var(--muted);margin-bottom:0}
    .case-side{display:grid;gap:18px}
    .case-side .case-media{aspect-ratio:16/9}
    .testimonial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .quote{background:#fff;border:1px solid var(--line);padding:22px;border-radius:12px}
    .quote p{font-size:14px;color:#435374;margin-bottom:18px}
    .quote footer{border-top:1px solid var(--line);padding-top:12px;color:var(--blue-deep);font-size:13px;font-weight:700}
    .quote footer span{display:block;color:var(--muted);font-weight:400;font-size:12px}
    .article-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    .article{background:#fff;padding:18px;border:1px solid var(--line);border-radius:10px;min-height:150px;display:flex;flex-direction:column;justify-content:space-between}
    .article small{color:var(--blue);font-weight:700}
    .article h3{font-size:16px;line-height:1.45;margin:10px 0}
    .article span{font-size:12px;color:var(--muted)}
    .faq-list{display:grid;grid-template-columns:1fr 1fr;gap:10px 22px}
    details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px 18px}
    summary{cursor:pointer;font-weight:700;color:var(--blue-deep);padding-right:20px}
    details p{color:var(--muted);font-size:14px;margin:12px 0 0}
    .match-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:36px;align-items:start}
    .match-copy{background:linear-gradient(145deg,#082d78,#1457d9);color:#fff;padding:32px;border-radius:16px}
    .match-copy h2{color:#fff}
    .match-copy p{color:#dceaff}
    .match-points{padding:0;margin:22px 0 0;list-style:none}
    .match-points li{padding:10px 0;border-bottom:1px solid rgba(255,255,255,.2);font-size:14px}
    .match-points li:before{content:"✓";color:#78e5ff;font-weight:800;margin-right:10px}
    form{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:var(--shadow)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    label{display:block;font-size:13px;color:var(--blue-deep);font-weight:700}
    input,select,textarea{width:100%;margin-top:7px;border:1px solid #cbd9ef;border-radius:8px;padding:12px 13px;font:inherit;color:var(--ink);background:#fbfdff}
    textarea{resize:vertical;min-height:118px}
    .field-full{grid-column:1/-1}
    .form-note{font-size:12px;color:var(--muted);margin:13px 0 0}
    .join-band{background:#e9f3ff;border:1px solid #c6ddfa;padding:32px;display:flex;justify-content:space-between;align-items:center;gap:24px;border-radius:14px}
    .join-band h2{font-size:28px;margin-bottom:6px}
    .join-band p{margin:0;color:var(--muted)}
    .footer{background:#082653;color:#d5e4fa;padding:52px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr 1fr;gap:34px}
    .footer h3{color:#fff;font-size:15px;margin-bottom:14px}
    .footer p,.footer a{font-size:13px;color:#b8cbe6}
    .footer a:hover{color:#fff}
    .footer-links{display:grid;gap:7px}
    .qr{width:108px;border-radius:8px;background:#fff;padding:5px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.16);margin-top:32px;padding-top:17px;font-size:12px;color:#9eb6d9;display:flex;justify-content:space-between;gap:20px}
    .float-contact{position:fixed;right:20px;bottom:22px;z-index:15;background:var(--orange);color:#fff;border-radius:50%;width:56px;height:56px;display:grid;place-items:center;font-weight:800;box-shadow:0 10px 25px rgba(242,139,54,.35)}
    .back-top{position:fixed;right:20px;bottom:90px;z-index:15;width:38px;height:38px;border:1px solid var(--line);border-radius:50%;background:#fff;color:var(--blue);cursor:pointer;display:none}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .65s ease,transform .65s ease}
    .reveal.visible{opacity:1;transform:none}
    @media(max-width:1050px){
      .nav-links a{padding:8px 6px;font-size:12px}
      .service-grid{grid-template-columns:repeat(2,1fr)}
      .article-grid{grid-template-columns:repeat(3,1fr)}
    }
    @media(max-width:780px){
      .container{width:min(100% - 28px,620px)}
      .nav{min-height:66px}
      .menu-toggle{display:block}
      .nav-links{display:none;position:absolute;left:14px;right:14px;top:68px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}
      .nav-links a{padding:11px 12px}
      .nav-cta{margin:0;text-align:center}
      .hero-inner,.about-grid,.comparison-wrap,.case-grid,.match-grid{grid-template-columns:1fr;gap:28px}
      .hero-inner{padding:65px 0 62px}
      h1{font-size:39px}
      .metrics{grid-template-columns:repeat(2,1fr);margin-top:-22px}
      .section{padding:60px 0}
      .section-head{display:block}
      .section-head .text-link{display:inline-block;margin-top:14px}
      .network{border-left:0;border-top:1px solid var(--line);padding:24px 0 0}
      .process{grid-template-columns:1fr 1fr;border-top:0;gap:18px}
      .step{border:1px solid var(--line);border-radius:10px;padding:20px}
      .step-number{top:-12px;left:18px}
      .solution-grid,.faq-list{grid-template-columns:1fr}
      .price-grid,.testimonial-grid{grid-template-columns:1fr}
      .article-grid{grid-template-columns:1fr 1fr}
      .join-band{display:block}
      .join-band .button{margin-top:18px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:6px}
    }
    @media(max-width:450px){
      .brand-sub{display:none}
      .metrics,.feature-list,.form-grid,.article-grid{grid-template-columns:1fr}
      .hero-actions .button{width:100%}
      .footer-grid{grid-template-columns:1fr}
    }