:root{
      --orange:#f45124;
      --orange-dark:#c83c1c;
      --orange-soft:#fff1ea;
      --ink:#202225;
      --muted:#687078;
      --line:#eaded6;
      --paper:#fffaf7;
      --cream:#fff5ee;
      --green:#19795b;
      --shadow:0 18px 44px rgba(91,49,27,.10);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:var(--paper);
      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(var(--container),calc(100% - 40px));margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:20;
      background:rgba(255,250,247,.94);
      border-bottom:1px solid rgba(234,222,214,.85);
      backdrop-filter:blur(14px);
    }
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
    .ai-page-logo{width:142px}
    .nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:13px;color:#4e5155;padding:8px 9px;transition:.2s}
    .nav-links a:hover{color:var(--orange)}
    .nav-cta,.button{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid var(--orange);background:var(--orange);color:#fff;
      padding:11px 18px;border-radius:5px;font-weight:700;font-size:14px;
      transition:transform .2s,box-shadow .2s,background .2s;
    }
    .nav-cta:hover,.button:hover{transform:translateY(-2px);background:var(--orange-dark);box-shadow:0 10px 20px rgba(244,81,36,.2)}
    .button.secondary{background:transparent;color:var(--orange)}
    .button.secondary:hover{color:#fff}
    .menu-toggle{display:none;background:transparent;border:0;font-size:25px;color:var(--ink)}
    .hero{
      position:relative;overflow:hidden;
      background:
        linear-gradient(125deg,#fff9f4 0%,#fff0e7 56%,#ffe2cf 100%);
      padding:88px 0 66px;
    }
    .hero:after{
      content:"";position:absolute;right:-100px;top:35px;width:360px;height:360px;
      border:1px solid rgba(244,81,36,.24);border-radius:50%;
      box-shadow:0 0 0 30px rgba(244,81,36,.05),0 0 0 60px rgba(244,81,36,.035);
    }
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(300px,.92fr);gap:58px;align-items:center;position:relative;z-index:1}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--orange-dark);font-size:13px;font-weight:800;letter-spacing:1px;margin-bottom:18px}
    .eyebrow:before{content:"";width:28px;height:2px;background:var(--orange)}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(38px,5vw,70px);line-height:1.12;letter-spacing:0;margin-bottom:22px;max-width:680px}
    .hero h1 span{color:var(--orange)}
    .hero-copy{font-size:18px;color:#585c61;max-width:620px;margin-bottom:30px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:35px}
    .hero-proof{display:flex;gap:24px;flex-wrap:wrap;color:#5f6368;font-size:13px}
    .hero-proof strong{display:block;color:var(--ink);font-size:20px;line-height:1.2}
    .signal-board{background:#fffdfb;border:1px solid #f0d7c9;padding:24px;box-shadow:var(--shadow);border-radius:8px}
    .board-top{display:flex;justify-content:space-between;align-items:center;padding-bottom:18px;border-bottom:1px solid var(--line);font-size:13px}
    .status{display:inline-flex;align-items:center;gap:6px;color:var(--green);font-weight:700}
    .status i{width:8px;height:8px;border-radius:50%;background:#36ad7c;display:inline-block}
    .board-title{font-size:25px;font-weight:800;margin:22px 0 15px}
    .flow-lines{display:grid;gap:12px}
    .flow-line{display:grid;grid-template-columns:92px 1fr auto;align-items:center;gap:10px;font-size:13px}
    .flow-line b{font-size:12px;color:#797b7e}
    .bar{height:9px;background:#f7e4da;border-radius:20px;overflow:hidden}
    .bar i{display:block;height:100%;background:linear-gradient(90deg,var(--orange),#ff9c59);border-radius:20px}
    .hero-note{margin-top:22px;padding:14px;background:var(--orange-soft);font-size:13px;color:#80402d}
    section{padding:88px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:34px}
    .section-head h2{font-size:clamp(28px,4vw,44px);line-height:1.18;margin-bottom:10px}
    .section-head p{max-width:590px;color:var(--muted);margin-bottom:0}
    .section-kicker{font-size:12px;color:var(--orange);font-weight:800;letter-spacing:2px;text-transform:uppercase}
    .stats{background:#251e1b;color:#fff;padding:30px 0}
    .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#53433d}
    .stat{padding:14px 22px;background:#251e1b}
    .stat strong{font-size:34px;color:#ff9b68;display:block;line-height:1.2}
    .stat span{color:#e7dcd7;font-size:13px}
    .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start}
    .about-panel{border-left:4px solid var(--orange);padding:5px 0 5px 24px;font-size:20px}
    .about-text{color:var(--muted)}
    .pill-list{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
    .pill{padding:7px 12px;border:1px solid #e7cfc3;background:#fff;color:#724b3a;font-size:13px;border-radius:30px}
    .service-section{background:#fff}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .service-card{padding:23px 20px;border:1px solid var(--line);background:#fffaf7;min-height:204px;transition:.25s}
    .service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#efab8a}
    .service-icon{width:40px;height:40px;display:grid;place-items:center;background:var(--orange);color:#fff;font-weight:800;border-radius:50%;margin-bottom:16px}
    .service-card h3{font-size:18px;margin-bottom:7px}
    .service-card p{font-size:13px;color:var(--muted);margin-bottom:0}
    .workflow{background:#fff0e7}
    .steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid #e6baa4}
    .step{padding:25px 18px 8px;border-right:1px solid #e6baa4;position:relative}
    .step:last-child{border-right:0}
    .step-number{color:var(--orange);font-size:13px;font-weight:800}
    .step h3{font-size:18px;margin:12px 0 7px}
    .step p{font-size:13px;color:#665d58;margin-bottom:0}
    .solution-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
    .solution-panel{background:#fff;border:1px solid var(--line);padding:28px}
    .solution-panel h3{font-size:23px;margin-bottom:14px}
    .solution-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}
    .solution-list li{display:flex;gap:10px;font-size:14px;color:#555}
    .solution-list li:before{content:"✓";color:var(--orange);font-weight:800}
    .network{background:#f7f0eb}
    .model-cloud{display:flex;flex-wrap:wrap;gap:10px;max-width:900px}
    .model-cloud span{font-size:14px;padding:9px 14px;background:#fff;border:1px solid #e4d4cb;color:#4d4d4d}
    .network-note{margin-top:22px;color:var(--muted);font-size:14px}
    .case-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .case-card{position:relative;overflow:hidden;background:#fff;border:1px solid var(--line)}
    .case-image{aspect-ratio:16/9;overflow:hidden;background:#f3e4da}
    .case-image img{width:100%;height:100%;object-fit:cover}
    .case-content{padding:18px}
    .case-content h3{font-size:19px;margin-bottom:7px}
    .case-content p{font-size:13px;color:var(--muted);margin-bottom:0}
    .case-tag{color:var(--orange);font-size:12px;font-weight:800}
    .compare{background:#fff}
    .rating-box{display:flex;align-items:center;gap:22px;background:#2b211d;color:#fff;padding:22px 25px;margin-bottom:24px}
    .rating-number{font-size:42px;color:#ff9b68;font-weight:800;line-height:1}
    .stars{color:#ffc14d;font-size:20px;letter-spacing:2px}
    .rating-box small{color:#e8d9d2}
    .table-wrap{overflow-x:auto;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{text-align:left;padding:15px 17px;border-bottom:1px solid #f0e5df;font-size:14px}
    th{background:#fff3ec;color:#844128;font-weight:800}
    td:last-child{color:var(--green);font-weight:700}
    .pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}
    .price-card{border:1px solid var(--line);padding:25px;background:#fff}
    .price-card.featured{border:2px solid var(--orange);position:relative}
    .price-card.featured:before{content:"优先参考";position:absolute;right:16px;top:16px;color:var(--orange);font-size:12px;font-weight:800}
    .price-card h3{font-size:19px;margin-bottom:5px}
    .price-card p{font-size:13px;color:var(--muted)}
    .price-value{font-size:28px;font-weight:800;color:var(--orange);margin:18px 0}
    .price-value small{font-size:12px;color:var(--muted);font-weight:400}
    .review-section{background:#251e1b;color:#fff}
    .review-section .section-head p{color:#d7c6be}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review{background:#3a2c27;padding:22px;border:1px solid #5a4238}
    .review p{font-size:14px;color:#f2e4dd;margin-bottom:18px}
    .review strong{font-size:14px;color:#ffb08a}
    .review span{display:block;font-size:12px;color:#c4b0a7;margin-top:3px}
    .article-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    .article{background:#fff;border:1px solid var(--line);padding:16px;min-height:145px;transition:.2s}
    .article:hover{border-color:var(--orange);transform:translateY(-3px)}
    .article small{color:var(--orange);font-weight:800}
    .article h3{font-size:15px;line-height:1.45;margin:13px 0 0}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 22px}
    details{border-bottom:1px solid var(--line);padding:15px 0}
    summary{cursor:pointer;font-weight:700;padding-right:28px;position:relative}
    summary::marker{color:var(--orange)}
    details p{font-size:14px;color:var(--muted);margin:11px 0 0 20px}
    .contact{background:#fff0e7}
    .contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:35px;align-items:start}
    .contact-card{background:#2b211d;color:#fff;padding:28px}
    .contact-card h3{font-size:25px;margin-bottom:13px}
    .contact-card p{color:#e5d3cb;font-size:14px}
    .contact-lines{display:grid;gap:10px;font-size:14px;color:#fff}
    .contact-form{background:#fff;padding:28px;border:1px solid #efd3c2}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    label{font-size:13px;font-weight:700;color:#4d4e50;display:grid;gap:7px}
    input,select,textarea{width:100%;font:inherit;border:1px solid #ddcec6;background:#fffaf7;padding:12px 13px;border-radius:3px;color:var(--ink)}
    textarea{min-height:120px;resize:vertical}
    .full{grid-column:1/-1}
    .contact-form .button{margin-top:18px;cursor:pointer}
    .join{border-top:1px solid var(--line);background:#fff}
    .join-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}
    .join-inner p{color:var(--muted);margin-bottom:0}
    footer{background:#211b19;color:#eadbd4;padding:42px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:28px}
    footer h3{color:#fff;font-size:16px;margin-bottom:14px}
    footer p,footer li,footer a{color:#cdbbb3;font-size:13px}
    footer ul{list-style:none;padding:0;margin:0;display:grid;gap:7px}
    footer a:hover{color:#ff9b68}
    .footer-brand img{width:140px;filter:brightness(0) invert(1);margin-bottom:13px}
    .copyright{border-top:1px solid #443631;margin-top:30px;padding-top:17px;color:#a9958c;font-size:12px}
    .qr{width:92px;margin-top:12px}
    .float-actions{position:fixed;right:20px;bottom:20px;z-index:15;display:grid;gap:9px}
    .float-actions a{width:44px;height:44px;display:grid;place-items:center;background:var(--orange);color:#fff;border-radius:50%;box-shadow:0 8px 20px rgba(85,39,20,.2);font-weight:800;font-size:13px}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .65s ease,transform .65s ease}
    .reveal.visible{opacity:1;transform:none}
    @media(max-width:1000px){
      .nav-links{display:none;position:absolute;left:20px;right:20px;top:75px;background:#fffaf7;border:1px solid var(--line);padding:10px;box-shadow:var(--shadow)}
      .nav-links.open{display:grid;grid-template-columns:repeat(3,1fr)}
      .nav-links a{padding:10px}
      .menu-toggle{display:block}
      .nav-cta{display:none}
      .service-grid{grid-template-columns:repeat(2,1fr)}
      .article-grid{grid-template-columns:repeat(3,1fr)}
      .case-grid{grid-template-columns:1fr 1fr}
      .case-card:first-child{grid-column:1/-1}
      .footer-grid{grid-template-columns:1.2fr 1fr 1fr}
    }
    @media(max-width:720px){
      .container{width:min(var(--container),calc(100% - 28px))}
      section{padding:60px 0}
      .hero{padding:62px 0 50px}
      .hero-grid,.about-grid,.solution-grid,.contact-grid{grid-template-columns:1fr;gap:30px}
      .hero h1{font-size:42px}
      .hero-copy{font-size:16px}
      .stats-grid{grid-template-columns:repeat(2,1fr)}
      .stat{padding:15px}
      .stat strong{font-size:28px}
      .section-head{display:block}
      .section-head p{margin-top:12px}
      .steps{grid-template-columns:1fr;border-top:0}
      .step{border-right:0;border-bottom:1px solid #e6baa4;padding:18px 0}
      .service-grid,.pricing-grid,.review-grid,.faq-grid{grid-template-columns:1fr}
      .case-grid{grid-template-columns:1fr}
      .case-card:first-child{grid-column:auto}
      .article-grid{grid-template-columns:1fr 1fr}
      .form-grid{grid-template-columns:1fr}
      .full{grid-column:auto}
      .join-inner{display:block}
      .join-inner .button{margin-top:18px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1/-1}
      .nav-links.open{grid-template-columns:1fr 1fr}
    }
    @media(max-width:420px){
      .article-grid,.footer-grid{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
      .hero-actions .button{width:100%}
      .rating-box{display:block}
      .rating-box small{display:block;margin-top:10px}
    }