:root{
      --ink:#102d35;
      --muted:#5b7479;
      --deep:#062d38;
      --teal:#0a9d9a;
      --cyan:#33c9c1;
      --mint:#dff8f2;
      --line:#d8e9e6;
      --paper:#f5fbfa;
      --white:#ffffff;
      --orange:#ed8b4f;
      --shadow:0 18px 50px rgba(10,65,69,.10);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:
        linear-gradient(180deg,#f4fbfa 0%,#ffffff 48%,#f1faf8 100%);
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","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(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:20;
      background:rgba(245,251,250,.94);
      border-bottom:1px solid rgba(216,233,230,.9);
      backdrop-filter:blur(16px);
    }
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
    .ai-page-logo{width:42px;height:42px;object-fit:contain}
    .brand-text{font-size:18px;font-weight:800;letter-spacing:0;color:var(--deep)}
    .brand-text small{display:block;color:var(--muted);font-size:10px;font-weight:600;line-height:1.2;letter-spacing:0}
    .nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{padding:8px 10px;color:#45666b;font-size:13px;transition:.25s}
    .nav-links a:hover{color:var(--teal)}
    .nav-cta,.button-primary{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:0;border-radius:8px;padding:12px 18px;
      color:#fff;background:var(--deep);font-weight:700;cursor:pointer;
      box-shadow:0 10px 24px rgba(6,45,56,.18);transition:transform .25s,box-shadow .25s,background .25s;
    }
    .nav-cta{font-size:13px;padding:10px 15px;white-space:nowrap}
    .button-primary:hover,.nav-cta:hover{transform:translateY(-2px);background:#0b5862;box-shadow:0 14px 28px rgba(6,45,56,.23)}
    .button-secondary{
      display:inline-flex;align-items:center;justify-content:center;
      border:1px solid #86c9c1;border-radius:8px;padding:11px 17px;
      color:var(--deep);font-weight:700;background:#effaf7;transition:.25s;
    }
    .button-secondary:hover{background:#d8f3ed;transform:translateY(-2px)}
    .menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:8px;padding:9px 11px;color:var(--deep);font-size:18px}
    .hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#062d38 0%,#075661 55%,#0b8d89 100%);color:#fff}
    .hero:before,.hero:after{content:"";position:absolute;pointer-events:none;border:1px solid rgba(144,244,229,.25);transform:rotate(24deg)}
    .hero:before{width:320px;height:320px;right:-100px;top:-130px;border-radius:28px}
    .hero:after{width:220px;height:220px;left:-90px;bottom:-140px;border-radius:50%}
    .hero-inner{position:relative;z-index:1;padding:88px 0 70px;display:grid;grid-template-columns:minmax(0,1.25fr) minmax(300px,.75fr);gap:56px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:#a8f2e6;font-size:13px;font-weight:700;letter-spacing:1px}
    .eyebrow:before{content:"";width:26px;height:2px;background:var(--cyan)}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(38px,5vw,66px);line-height:1.12;letter-spacing:0;margin:18px 0 22px;max-width:720px}
    .hero-copy{font-size:18px;color:#d3f2ee;max-width:650px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
    .hero .button-primary{background:var(--cyan);color:#063841}
    .hero .button-secondary{background:transparent;color:#fff;border-color:rgba(255,255,255,.48)}
    .hero-note{margin-top:18px;font-size:13px;color:#a8d7d2}
    .hero-panel{padding:25px;border:1px solid rgba(188,247,238,.25);background:rgba(1,33,42,.28);border-radius:16px;box-shadow:0 18px 60px rgba(0,0,0,.12)}
    .hero-panel-title{color:#a8f2e6;font-size:13px;font-weight:700;margin-bottom:18px}
    .metric-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .metric{padding:16px 14px;border-left:2px solid var(--cyan);background:rgba(255,255,255,.08)}
    .metric strong{display:block;font-size:25px;line-height:1.1;color:#fff}
    .metric span{display:block;color:#c2e7e3;font-size:12px;margin-top:5px}
    .section{padding:88px 0}
    .section-tint{background:#edf9f6;border-top:1px solid #e2f2ef;border-bottom:1px solid #e2f2ef}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:34px}
    .section-kicker{color:var(--teal);font-size:12px;font-weight:800;letter-spacing:1.8px;text-transform:uppercase}
    h2{font-size:clamp(28px,4vw,43px);line-height:1.2;margin:8px 0 0;color:var(--deep)}
    .section-lead{max-width:590px;color:var(--muted);margin:0}
    .intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
    .intro-copy p{color:var(--muted);font-size:16px}
    .principles{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .principle{padding:18px;border-top:3px solid var(--teal);background:#fff;box-shadow:var(--shadow)}
    .principle strong{display:block;margin-bottom:5px;color:var(--deep)}
    .principle span{color:var(--muted);font-size:13px}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .service-card{padding:22px;background:#fff;border:1px solid var(--line);border-radius:10px;transition:.25s}
    .service-card:hover,.comment-card:hover,.case:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#95d8d0}
    .service-icon{width:38px;height:38px;border-radius:8px;display:grid;place-items:center;background:var(--mint);color:var(--teal);font-weight:800;margin-bottom:15px}
    .service-card h3{font-size:18px;margin-bottom:8px;color:var(--deep)}
    .service-card p{font-size:13px;color:var(--muted);margin:0}
    .workflow{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid var(--line)}
    .step{position:relative;padding:26px 18px 10px;border-right:1px solid var(--line)}
    .step:last-child{border-right:0}
    .step-number{font-size:32px;color:var(--teal);font-weight:800;line-height:1}
    .step h3{font-size:17px;margin:15px 0 7px}
    .step p{font-size:13px;color:var(--muted);margin:0}
    .solution-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:24px}
    .solution-list{display:grid;gap:10px}
    .solution-link{display:flex;justify-content:space-between;align-items:center;padding:15px 17px;background:#fff;border:1px solid var(--line);border-radius:8px;font-weight:700;color:var(--deep)}
    .solution-link span{color:var(--teal);font-size:18px}
    .solution-detail{padding:28px;background:var(--deep);color:#d7f3ef;border-radius:12px}
    .solution-detail h3{color:#fff;font-size:25px;margin-bottom:10px}
    .solution-detail p{color:#b4d8d4}
    .tag-cloud{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
    .tag{padding:7px 11px;border:1px solid rgba(151,235,222,.35);color:#bceee7;border-radius:5px;font-size:12px}
    .network{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
    .network-panel{padding:28px;background:#fff;border:1px solid var(--line)}
    .network-panel h3{margin-bottom:16px;color:var(--deep)}
    .model-cloud{display:flex;flex-wrap:wrap;gap:9px}
    .model-cloud span{font-size:13px;color:#37656a;padding:7px 10px;background:#edf8f5;border-radius:4px}
    .comparison{display:grid;grid-template-columns:.7fr 1.3fr;gap:26px;align-items:start}
    .score-panel{padding:30px;background:var(--deep);color:#fff;border-radius:12px}
    .score-panel h3{color:#a8f2e6;margin-bottom:16px}
    .score{font-size:58px;font-weight:800;line-height:1}
    .stars{color:#ffbf62;letter-spacing:5px;font-size:20px;margin:14px 0}
    .score-panel p{color:#b9dcd8;font-size:13px}
    .table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line)}
    table{border-collapse:collapse;width:100%;min-width:650px;font-size:14px}
    th,td{text-align:left;padding:15px 16px;border-bottom:1px solid var(--line)}
    th{background:#e9f8f4;color:var(--deep)}
    td:first-child{font-weight:700;color:var(--deep)}
    .yes{color:#087f78;font-weight:800}
    .cases{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .case{background:#fff;border:1px solid var(--line);transition:.25s;overflow:hidden}
    .case-media{aspect-ratio:16/9;overflow:hidden;background:#dff2ee}
    .case-media img{width:100%;height:100%;object-fit:cover}
    .case-body{padding:20px}
    .case-label{font-size:12px;color:var(--teal);font-weight:800}
    .case h3{font-size:19px;margin:7px 0}
    .case p{font-size:13px;color:var(--muted);margin:0}
    .comments{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .comment-card{padding:22px;background:#fff;border:1px solid var(--line);transition:.25s}
    .comment-card p{color:#47666a;font-size:14px;min-height:78px}
    .comment-author{display:flex;justify-content:space-between;gap:10px;border-top:1px solid var(--line);padding-top:13px;font-size:12px;color:var(--muted)}
    .comment-author strong{color:var(--deep)}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 18px}
    details{background:#fff;border:1px solid var(--line);padding:0 18px}
    summary{cursor:pointer;list-style:none;padding:17px 26px 17px 0;font-weight:700;color:var(--deep);position:relative}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";position:absolute;right:0;color:var(--teal);font-size:22px;top:13px}
    details[open] summary:after{content:"−"}
    details p{border-top:1px solid var(--line);padding:14px 0 16px;margin:0;color:var(--muted);font-size:13px}
    .article-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    .article{padding:18px 15px;background:#fff;border-bottom:3px solid var(--cyan);min-height:150px}
    .article span{font-size:11px;color:var(--teal);font-weight:800}
    .article h3{font-size:15px;line-height:1.45;margin:10px 0 8px}
    .article p{font-size:12px;color:var(--muted);margin:0}
    .match-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:30px;align-items:start}
    .match-copy p{color:var(--muted)}
    .price-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:25px}
    .price-item{padding:18px;background:#fff;border:1px solid var(--line)}
    .price-item strong{display:block;color:var(--teal);font-size:22px}
    .price-item span{font-size:12px;color:var(--muted)}
    form{display:grid;grid-template-columns:1fr 1fr;gap:15px;padding:26px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
    .field{display:grid;gap:6px}
    .field.full{grid-column:1/-1}
    label{font-size:13px;font-weight:700;color:var(--deep)}
    input,select,textarea{width:100%;border:1px solid #c9dfdc;border-radius:6px;padding:12px 13px;font:inherit;color:var(--ink);background:#fbfefd;outline:none}
    input:focus,select:focus,textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(10,157,154,.12)}
    textarea{min-height:115px;resize:vertical}
    .form-note{grid-column:1/-1;color:var(--muted);font-size:12px;margin:-4px 0 0}
    .contact-band{background:var(--deep);color:#fff}
    .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center}
    .contact-band h2{color:#fff}
    .contact-band p{color:#b9dcd8}
    .contact-points{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:25px}
    .contact-point{padding:14px 16px;border:1px solid rgba(174,235,225,.25);font-size:13px;color:#d5f2ee}
    .contact-point strong{display:block;color:#fff}
    .qr-box{display:flex;align-items:center;gap:22px;padding:18px;background:rgba(255,255,255,.08);border:1px solid rgba(174,235,225,.25)}
    .qr-box img{width:130px;height:130px;object-fit:cover;background:#fff;padding:6px}
    .qr-box p{margin:0;font-size:13px}
    .footer{background:#041f28;color:#b5d4d0;padding:45px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:35px;padding-bottom:30px;border-bottom:1px solid rgba(181,212,208,.18)}
    .footer h3{color:#fff;font-size:16px;margin-bottom:13px}
    .footer p,.footer a{font-size:13px;color:#b5d4d0}
    .footer a:hover{color:#6ce0d1}
    .footer-links{display:flex;flex-wrap:wrap;gap:9px 15px}
    .copyright{padding-top:18px;font-size:12px;color:#8eafab;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    .float-actions{position:fixed;right:18px;bottom:20px;z-index:15;display:grid;gap:9px}
    .float-actions a{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--teal);color:#fff;font-weight:800;box-shadow:0 8px 20px rgba(10,157,154,.3);font-size:12px}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
    .reveal.visible{opacity:1;transform:none}
    @media(max-width:1050px){
      .nav-links a{padding-left:6px;padding-right:6px;font-size:12px}
      .service-grid{grid-template-columns:repeat(2,1fr)}
      .article-grid{grid-template-columns:repeat(3,1fr)}
    }
    @media(max-width:760px){
      .container{width:min(var(--container),calc(100% - 28px))}
      .site-header{position:relative}
      .nav-wrap{min-height:68px}
      .menu-toggle{display:block}
      .nav-cta{display:none}
      .nav-links{display:none;position:absolute;top:68px;left:0;right:0;padding:12px 14px;background:#f5fbfa;border-bottom:1px solid var(--line);box-shadow:0 12px 24px rgba(6,45,56,.08)}
      .nav-links.open{display:grid;grid-template-columns:repeat(2,1fr)}
      .nav-links a{padding:10px;font-size:13px}
      .hero-inner,.intro-grid,.solution-layout,.network,.comparison,.match-layout,.contact-grid{grid-template-columns:1fr}
      .hero-inner{padding:65px 0 52px;gap:32px}
      h1{font-size:39px}
      .section{padding:62px 0}
      .section-head{display:block}
      .section-lead{margin-top:14px}
      .workflow{grid-template-columns:1fr;border-top:0}
      .step{border-right:0;border-bottom:1px solid var(--line);padding:20px 0}
      .step:last-child{border-bottom:0}
      .comments,.cases{grid-template-columns:1fr}
      .faq-grid{grid-template-columns:1fr}
      .article-grid{grid-template-columns:1fr 1fr}
      .footer-grid{grid-template-columns:1fr;gap:22px}
      form{grid-template-columns:1fr}
      .field.full,.form-note{grid-column:auto}
      .contact-points{grid-template-columns:1fr}
    }
    @media(max-width:430px){
      .brand-text{font-size:16px}
      .hero-actions{display:grid}
      .hero-actions a{width:100%}
      .metric-list,.principles,.price-strip{grid-template-columns:1fr}
      .article-grid{grid-template-columns:1fr}
      .qr-box{align-items:flex-start;flex-direction:column}
    }
    @media(prefers-reduced-motion:reduce){
      *,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}
      .reveal{opacity:1;transform:none}
    }