:root{--ink:#22272b;--muted:#667078;--paper:#fbf9f5;--white:#fff;--line:#e8e2d8;--coral:#e96f55;--blue:#4778da;--mint:#b9e8d5;--yellow:#f5d778;--lav:#d9d2f5;--container:1160px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:84px}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.65}
    a{color:inherit}
    button,input,select,textarea{font:inherit}
    img{max-width:100%;height:auto}
    .container{width:min(var(--container),calc(100% - 40px));margin-inline:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(251,249,245,.94);backdrop-filter:blur(14px);border-bottom:1px solid rgba(34,39,43,.08)}
    .nav-row{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:850;letter-spacing:.02em;white-space:nowrap}
    .brand-mark{width:34px;height:34px;border-radius:12px;background:linear-gradient(135deg,var(--coral),#f2a45e 48%,var(--blue));display:grid;place-items:center;color:#fff;font-size:18px}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;list-style:none;padding:0;margin:0;flex-wrap:wrap}
    .nav-links a{display:block;padding:9px 10px;color:#485158;text-decoration:none;font-size:13px;white-space:nowrap}
    .nav-links a:hover{color:var(--coral)}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:12px 19px;background:var(--ink);color:#fff;text-decoration:none;font-weight:700;transition:transform .2s,box-shadow .2s,background .2s;cursor:pointer}
    .nav-cta{padding:10px 16px;font-size:13px;white-space:nowrap}
    .button:hover,.nav-cta:hover{transform:translateY(-2px);box-shadow:0 9px 24px #22272b24}
    .button.primary{background:var(--coral);color:#fff}
    .button.light{background:#fff;color:var(--ink);border:1px solid var(--line)}
    .menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--ink)}
    .hero{position:relative;overflow:hidden;padding:78px 0 64px;background:linear-gradient(135deg,#fbf2e7 0%,#f9f6ef 48%,#edf5f3 100%)}
    .hero:before,.hero:after{content:"";position:absolute;border-radius:50%;pointer-events:none;filter:blur(1px)}
    .hero:before{width:280px;height:280px;background:radial-gradient(circle,#ef9d7966,transparent 70%);top:-100px;right:7%}
    .hero:after{width:330px;height:330px;background:radial-gradient(circle,#a9c4f766,transparent 70%);bottom:-200px;left:12%}
    .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.12fr .88fr;align-items:center;gap:52px}
    .eyebrow{display:inline-flex;align-items:center;gap:9px;color:#a94f3b;font-size:13px;font-weight:800;letter-spacing:.09em;text-transform:uppercase}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--coral)}
    h1{font-size:clamp(38px,6vw,70px);line-height:1.08;letter-spacing:-.055em;margin:18px 0 20px;max-width:720px}
    .hero-copy{max-width:610px;color:#59636a;font-size:18px;margin:0 0 27px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-note{font-size:13px;color:#697178;margin-top:18px}
    .visual-board{position:relative;min-height:315px;border:1px solid #ffffffbd;border-radius:30px;background:#ffffff9c;padding:22px;box-shadow:0 22px 70px #46515a12;overflow:hidden}
    .board-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-bottom:15px;border-bottom:1px solid var(--line);font-size:13px;font-weight:750}
    .live-dot{width:8px;height:8px;border-radius:50%;background:#55b887;display:inline-block;margin-right:7px}
    .model-cloud{display:flex;flex-wrap:wrap;gap:9px;margin:18px 0 22px}
    .model-chip{padding:7px 11px;border-radius:999px;background:#fff;border:1px solid #e9e5df;font-size:12px;color:#485158}
    .workflow{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;align-items:stretch}
    .flow-node{background:#fff;border-radius:16px;padding:14px 12px;border:1px solid #eee9e2;min-height:82px}
    .flow-node b{display:block;font-size:13px;margin-bottom:3px}
    .flow-node span{font-size:11px;color:var(--muted)}
    .flow-arrow{display:none}
    .mini-stat{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:15px;padding:13px 15px;border-radius:15px;background:#252c31;color:#fff}
    .mini-stat span{font-size:12px;color:#d9dfdf}
    .mini-stat strong{font-size:13px}
    .section{padding:76px 0}
    .section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:30px;margin-bottom:30px}
    .section-heading h2{font-size:clamp(27px,4vw,42px);line-height:1.16;letter-spacing:-.04em;margin:8px 0 0}
    .section-heading p{max-width:510px;color:var(--muted);margin:0}
    .section-kicker{font-size:12px;font-weight:800;letter-spacing:.12em;color:#bd5c47;text-transform:uppercase}
    .intro-band{display:grid;grid-template-columns:.88fr 1.12fr;gap:34px;align-items:center;padding:32px;border-radius:26px;background:#fff;border:1px solid var(--line)}
    .logo-wrap{display:flex;align-items:center;gap:14px}
    .ai-page-logo{width:62px;max-height:62px;object-fit:contain}
    .intro-band h3{font-size:22px;margin:0 0 8px}
    .intro-band p{color:var(--muted);margin:0}
    .intro-points{display:grid;grid-template-columns:repeat(2,1fr);gap:13px 22px}
    .intro-point{padding-left:15px;border-left:3px solid var(--mint);font-size:14px}
    .intro-point b{display:block;margin-bottom:2px}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}
    .metric{padding:20px;border-radius:18px;background:#f0ece5}
    .metric strong{display:block;font-size:22px;letter-spacing:-.03em}
    .metric span{font-size:12px;color:var(--muted)}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .service-card{padding:22px;border-radius:20px;background:#fff;border:1px solid var(--line);transition:transform .22s,box-shadow .22s}
    .service-card:hover{transform:translateY(-4px);box-shadow:0 14px 30px #242c3112}
    .service-icon{width:40px;height:40px;border-radius:14px;display:grid;place-items:center;font-size:19px;margin-bottom:16px;background:#f9e3da}
    .service-card:nth-child(3n+2) .service-icon{background:#e3edfc}
    .service-card:nth-child(3n) .service-icon{background:#e3f2e9}
    .service-card h3{font-size:17px;margin:0 0 8px}
    .service-card p{font-size:13px;color:var(--muted);margin:0}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
    .tag-cloud span{padding:7px 12px;background:#f0ece5;border-radius:999px;color:#596168;font-size:12px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .step{padding:25px 22px 27px 0;position:relative}
    .step:not(:last-child):after{content:"";position:absolute;right:20px;top:36px;width:26px;height:1px;background:#d6cec3}
    .step-num{font-size:12px;color:#c15e48;font-weight:800;letter-spacing:.08em}
    .step h3{font-size:18px;margin:10px 0 5px}
    .step p{font-size:13px;color:var(--muted);margin:0;max-width:220px}
    .industry-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:24px}
    .industry-panel{border-radius:24px;background:#eaf2ee;padding:28px}
    .industry-panel h3{margin:0 0 15px;font-size:22px}
    .industry-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .industry-item{padding:14px 15px;background:#ffffffbd;border-radius:13px;font-size:13px}
    .network-panel{padding:28px;border-radius:24px;background:#f6e9e1}
    .network-panel p{color:#606970}
    .network-lines{display:grid;gap:12px;margin-top:18px}
    .network-line{display:flex;justify-content:space-between;gap:16px;padding-bottom:10px;border-bottom:1px solid #ddcfc5;font-size:13px}
    .network-line strong{white-space:nowrap}
    .case-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:15px}
    .case-card{border-radius:22px;overflow:hidden;background:#fff;border:1px solid var(--line)}
    .case-card img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;background:#eee8df}
    .case-copy{padding:18px}
    .case-copy h3{margin:0 0 6px;font-size:17px}
    .case-copy p{margin:0;color:var(--muted);font-size:13px}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}
    .review{padding:20px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .review blockquote{margin:0 0 16px;font-size:14px;color:#4d565d}
    .review cite{font-size:12px;color:#7b8388;font-style:normal;font-weight:700}
    .rating-band{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:23px 26px;background:#252c31;color:#fff;border-radius:20px;margin-bottom:18px}
    .rating-band p{margin:0;color:#e2e5e5}
    .rating-score{display:flex;align-items:center;gap:14px;white-space:nowrap}
    .rating-score strong{font-size:34px}
    .stars{color:#ffd878;letter-spacing:2px}
    .table-wrap{overflow-x:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    table{border-collapse:collapse;width:100%;min-width:720px;text-align:left}
    th,td{padding:15px 18px;border-bottom:1px solid #eee9e2;font-size:13px}
    th{background:#f2eee7;color:#424b50}
    tr:last-child td{border-bottom:0}
    td:last-child{font-weight:700;color:#447c62}
    .pricing{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center;padding:30px;border-radius:24px;background:#e9effa}
    .pricing h3{font-size:24px;margin:0 0 8px}
    .pricing p{color:#5e6975;margin:0}
    .price-note{padding:17px 18px;background:#fff;border-radius:16px;color:#58616a;font-size:13px}
    .faq-list{display:grid;grid-template-columns:1fr 1fr;gap:10px}
    details{background:#fff;border:1px solid var(--line);border-radius:15px;padding:0 17px}
    summary{cursor:pointer;list-style:none;padding:16px 28px 16px 0;font-weight:700;font-size:14px;position:relative}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";position:absolute;right:0;top:12px;font-size:21px;color:var(--coral)}
    details[open] summary:after{content:"−"}
    details p{margin:0;padding:0 0 16px;color:var(--muted);font-size:13px}
    .knowledge-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .knowledge-box{padding:25px;border-radius:20px;background:#fff;border:1px solid var(--line)}
    .knowledge-box h3{margin:0 0 10px}
    .knowledge-box p{color:var(--muted);font-size:14px;margin:0 0 14px}
    .text-link{font-weight:750;color:#b7513e;text-decoration:none;font-size:13px}
    .article-links{display:flex;flex-wrap:wrap;gap:10px}
    .article-links a{padding:9px 12px;border-radius:999px;background:#f2eee7;text-decoration:none;font-size:12px}
    .contact{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:start;padding:32px;background:#e9f0ec;border-radius:26px}
    .contact-info h2{font-size:34px;line-height:1.15;margin:8px 0 12px}
    .contact-info p{color:#5e6964}
    .contact-list{display:grid;gap:8px;margin-top:20px;font-size:14px}
    .contact-list a{text-decoration:none;font-weight:700}
    .contact-form{display:grid;grid-template-columns:1fr 1fr;gap:13px;padding:22px;border-radius:18px;background:#fff}
    .field{display:grid;gap:6px}
    .field.full{grid-column:1/-1}
    .field label{font-size:12px;font-weight:750;color:#515b60}
    .field input,.field select,.field textarea{width:100%;padding:11px 12px;border:1px solid #deded8;border-radius:10px;background:#fff;color:var(--ink);outline:none}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:#6d9b83;box-shadow:0 0 0 3px #6d9b831c}
    .field textarea{min-height:105px;resize:vertical}
    .form-submit{grid-column:1/-1;justify-self:start}
    .footer{margin-top:48px;background:#f0ece5;border-top:1px solid #e2dcd1;color:#31383c}
    .footer-main{display:flex;justify-content:space-between;gap:30px;padding:25px 0 18px;align-items:flex-start}
    .footer-brand p{font-size:13px;color:#687078;max-width:440px;margin:8px 0 0}
    .footer-links{display:flex;flex-wrap:wrap;gap:8px 16px;max-width:500px}
    .footer-links a{font-size:12px;color:#475157;text-decoration:none}
    .footer-bottom{border-top:1px solid #ded8ce;padding:12px 0 15px;font-size:12px;color:#697178}
    .float-help{position:fixed;right:18px;bottom:20px;z-index:15;display:grid;gap:8px}
    .float-help a{display:grid;place-items:center;width:48px;height:48px;border-radius:16px;background:#252c31;color:#fff;text-decoration:none;box-shadow:0 8px 24px #22272b2a;font-size:12px;font-weight:800}
    .float-help a:first-child{background:var(--coral)}
    .reveal{opacity:0;transform:translateY(14px);transition:opacity .55s ease,transform .55s ease}
    .reveal.visible{opacity:1;transform:translateY(0)}
    @media(max-width:1000px){
      .nav-links{gap:0}
      .nav-links a{padding-inline:7px;font-size:12px}
      .nav-cta{display:none}
      .service-grid{grid-template-columns:repeat(3,1fr)}
      .hero-grid{gap:30px}
    }
    @media(max-width:760px){
      .container{width:min(var(--container),calc(100% - 32px))}
      .nav-row{min-height:64px}
      .menu-toggle{display:block}
      .nav-links{display:none;position:absolute;top:64px;left:0;right:0;padding:10px 16px 16px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 14px 22px #20252a0c;align-items:stretch;flex-direction:column}
      .nav-links.open{display:flex}
      .nav-links a{padding:10px 8px;font-size:14px}
      .hero{padding:57px 0 46px}
      .hero-grid,.intro-band,.industry-wrap,.pricing,.contact{grid-template-columns:1fr}
      .hero-grid{gap:28px}
      .visual-board{min-height:0}
      .section{padding:56px 0}
      .section-heading{display:block}
      .section-heading p{margin-top:12px}
      .service-grid{grid-template-columns:repeat(2,1fr)}
      .steps{grid-template-columns:repeat(2,1fr)}
      .step:nth-child(2):after{display:none}
      .case-grid{grid-template-columns:1fr 1fr}
      .review-grid{grid-template-columns:1fr 1fr}
      .faq-list{grid-template-columns:1fr}
      .metrics{grid-template-columns:repeat(2,1fr)}
      .footer-main{display:grid}
    }
    @media(max-width:480px){
      h1{font-size:42px}
      .hero-copy{font-size:16px}
      .service-grid,.case-grid,.review-grid,.intro-points,.industry-list,.knowledge-grid{grid-template-columns:1fr}
      .steps{grid-template-columns:1fr}
      .step{padding-right:0}
      .step:after{display:none}
      .rating-band{align-items:flex-start;flex-direction:column}
      .rating-score strong{font-size:30px}
      .contact-form{grid-template-columns:1fr;padding:17px}
      .field.full,.form-submit{grid-column:auto}
      .float-help{right:12px;bottom:12px}
      .float-help a{width:44px;height:44px}
    }
    @media(prefers-reduced-motion:reduce){
      *,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
      .reveal{opacity:1;transform:none}
    }