:root{--ink:#20221b;--muted:#62645a;--paper:#f5f3eb;--white:#fffef8;--yellow:#f5da24;--yellow-deep:#e7c900;--line:#deddd1;--green:#426b48;--coral:#d76e4d;--container:1160px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;line-height:1.65}
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button,a{-webkit-tap-highlight-color:transparent}
    img{max-width:100%;height:auto}
    .container{width:min(var(--container),calc(100% - 40px));margin-inline:auto}
    .topbar{position:sticky;top:0;z-index:10;background:rgba(245,243,235,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
    .nav{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;flex-shrink:0;font-weight:800}
    .ai-page-logo{width:40px;height:40px;object-fit:contain}
    .brand-name{font-size:18px;line-height:1.2}
    .brand-name small{display:block;font-size:10px;font-weight:600;letter-spacing:0;color:var(--muted);margin-top:3px}
    .nav-right{display:flex;align-items:center;gap:20px}
    .nav-links{display:flex;align-items:center;gap:0;list-style:none;padding:0;margin:0}
    .nav-links a{display:block;padding:9px 8px;font-size:12px;color:#46483f}
    .nav-links a:hover{color:#000;background:var(--yellow);border-radius:4px}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--ink);background:var(--yellow);color:var(--ink);padding:11px 17px;font-weight:750;border-radius:4px;transition:transform .2s,box-shadow .2s,background .2s}
    .nav-cta{white-space:nowrap;font-size:13px}
    .button:hover,.nav-cta:hover{transform:translateY(-2px);box-shadow:3px 4px 0 var(--ink)}
    .button.secondary{background:var(--white)}
    .menu-toggle{display:none;border:1px solid var(--line);background:var(--white);width:42px;height:42px;border-radius:4px;color:var(--ink);font-size:20px}
    .hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:var(--yellow);padding:76px 0 54px}
    .hero::before{content:"";position:absolute;right:7%;top:60px;width:280px;aspect-ratio:1;border:1px solid rgba(32,34,27,.18);border-radius:50%;box-shadow:0 0 0 35px rgba(255,255,255,.12),0 0 0 70px rgba(255,255,255,.08);pointer-events:none}
    .hero::after{content:"";position:absolute;right:17%;top:147px;width:100px;height:100px;border:1px solid rgba(32,34,27,.35);transform:rotate(45deg);pointer-events:none}
    .hero-inner{position:relative;z-index:1}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:800;letter-spacing:0;color:#393b31;text-transform:uppercase}
    .eyebrow::before{content:"";width:24px;height:2px;background:var(--ink)}
    h1{max-width:700px;margin:18px 0 16px;font-size:clamp(40px,6vw,68px);line-height:1.08;letter-spacing:0}
    .hero-copy{max-width:600px;color:#35372e;font-size:17px;margin:0}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:27px}
    .hero-note{margin-top:22px;font-size:12px;color:#484a3e}
    .hero-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:65px;border-top:1px solid rgba(32,34,27,.28)}
    .hero-stat{padding:18px 18px 0 0}
    .hero-stat strong{display:block;font-size:21px}
    .hero-stat span{font-size:12px;color:#494b40}
    .section{padding:76px 0;border-bottom:1px solid var(--line)}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:30px}
    .kicker{margin:0 0 7px;color:var(--green);font-size:12px;font-weight:800}
    h2{margin:0;font-size:clamp(28px,4vw,40px);line-height:1.2;letter-spacing:0}
    .section-intro{max-width:510px;margin:0;color:var(--muted);font-size:14px}
    .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
    .about-copy p{color:var(--muted);margin:16px 0}
    .feature-list{display:grid;grid-template-columns:1fr 1fr;gap:0 20px;margin:25px 0 0;padding:0;list-style:none}
    .feature-list li{padding:13px 0;border-top:1px solid var(--line);font-size:14px;font-weight:700}
    .feature-list li::before{content:"↗";color:var(--green);margin-right:10px}
    .model-field{padding:23px;background:var(--white);border:1px solid var(--line);border-top:4px solid var(--yellow-deep)}
    .model-field h3{margin:0 0 8px;font-size:16px}
    .model-field p{margin:0 0 18px;color:var(--muted);font-size:13px}
    .tags{display:flex;flex-wrap:wrap;gap:8px}
    .tag{padding:6px 10px;border:1px solid var(--line);background:#faf9f2;border-radius:2px;font-size:12px}
    .service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
    .service{background:var(--white);padding:22px;min-height:165px;transition:background .2s,transform .2s}
    .service:hover{background:#fff9c9;transform:translateY(-3px)}
    .service .number{font-size:11px;color:var(--green);font-weight:800}
    .service h3{font-size:17px;margin:8px 0}
    .service p{margin:0;color:var(--muted);font-size:13px}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:steps}
    .step{position:relative;border-top:2px solid var(--ink);padding:17px 4px 0;counter-increment:steps}
    .step::before{content:"0" counter(steps);font-size:13px;font-weight:800;color:var(--coral)}
    .step h3{margin:9px 0 5px;font-size:17px}
    .step p{margin:0;color:var(--muted);font-size:13px}
    .solution-band{background:#e9eee3}
    .solution-grid{display:grid;grid-template-columns:1fr 1fr;gap:38px;align-items:center}
    .solution-grid h2{max-width:480px}
    .solution-grid p{color:var(--muted)}
    .solution-points{display:grid;grid-template-columns:1fr 1fr;gap:15px 20px}
    .solution-point{border-bottom:1px solid #cbd2c5;padding:0 0 12px;font-size:14px;font-weight:700}
    .solution-point span{display:block;color:var(--muted);font-size:12px;font-weight:400;margin-top:4px}
    .industry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .industry{padding:18px 15px;border-left:3px solid var(--yellow-deep);background:var(--white)}
    .industry h3{margin:0 0 6px;font-size:15px}
    .industry p{margin:0;color:var(--muted);font-size:12px}
    .network{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
    .network-copy p{color:var(--muted)}
    .network-list{list-style:none;padding:0;margin:20px 0 0}
    .network-list li{padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}
    .network-list strong{display:inline-block;min-width:105px}
    .network-callout{background:var(--ink);color:#fffef8;padding:30px;border-radius:4px}
    .network-callout h3{margin:0 0 10px;font-size:22px}
    .network-callout p{color:#d4d4c9;font-size:14px}
    .network-callout .button{margin-top:10px}
    .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .case{background:var(--white);border:1px solid var(--line);overflow:hidden}
    .case-visual{aspect-ratio:16/8.5;overflow:hidden;background:#e8e2d1}
    .case-visual img{display:block;width:100%;height:100%;object-fit:cover}
    .case-copy{padding:18px}
    .case-copy h3{margin:0 0 6px;font-size:16px}
    .case-copy p{margin:0;color:var(--muted);font-size:13px}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .review{padding:19px;background:var(--white);border-top:3px solid var(--yellow-deep)}
    .review blockquote{margin:0;font-size:14px}
    .review cite{display:block;margin-top:14px;font-style:normal;color:var(--muted);font-size:12px}
    .comparison-wrap{overflow-x:auto;border:1px solid var(--line);background:var(--white)}
    table{width:100%;min-width:760px;border-collapse:collapse;text-align:left}
    th,td{padding:14px 16px;border-bottom:1px solid var(--line);font-size:13px}
    thead th{background:#ecebe2;font-size:12px}
    th.highlight,td.highlight{background:#fff8ca}
    .score-row{display:flex;align-items:center;gap:18px;margin-bottom:20px}
    .score{font-size:36px;font-weight:850;line-height:1}
    .stars{color:#b28e00;font-size:20px;letter-spacing:0}
    .score-caption{font-size:12px;color:var(--muted)}
    .match{display:grid;grid-template-columns:.8fr 1.2fr;gap:46px;align-items:start}
    .match-copy p{color:var(--muted)}
    .price-table{margin-top:22px;border-top:1px solid var(--line)}
    .price-line{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px solid var(--line);font-size:13px}
    .price-line span:last-child{font-weight:700}
    .form-panel{background:var(--white);border:1px solid var(--line);padding:24px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field label{display:block;margin-bottom:6px;font-weight:700;font-size:12px}
    .field input,.field select,.field textarea{width:100%;border:1px solid #cbcbbf;background:#fff;padding:11px 12px;border-radius:3px;color:var(--ink)}
    .field textarea{min-height:105px;resize:vertical}
    .field.full{grid-column:1/-1}
    .form-panel .button{margin-top:15px;cursor:pointer}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-item summary{cursor:pointer;list-style:none;padding:17px 34px 17px 0;font-size:15px;font-weight:700;position:relative}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary::after{content:"+";position:absolute;right:5px;font-size:20px;top:12px;font-weight:400}
    .faq-item[open] summary::after{content:"−"}
    .faq-item p{margin:0;padding:0 30px 17px 0;color:var(--muted);font-size:13px}
    .info-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
    .info-grid h3{margin:0 0 12px;font-size:20px}
    .info-grid p{color:var(--muted);font-size:14px}
    .article-list{border-top:1px solid var(--line)}
    .article-link{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14px}
    .article-link span:last-child{color:var(--green);font-size:12px;white-space:nowrap}
    .contact-band{background:var(--yellow);padding:45px 0}
    .contact-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .contact-inner h2{font-size:30px}
    .contact-inner p{margin:8px 0 0;color:#494b40}
    .footer{background:#20221b;color:#f5f3eb;padding:34px 0 22px}
    .footer-main{display:flex;align-items:flex-start;justify-content:space-between;gap:35px}
    .footer p{margin:8px 0;color:#d1d1c7;font-size:13px}
    .footer-links{display:flex;flex-wrap:wrap;gap:9px 18px;max-width:580px}
    .footer-links a{color:#f5f3eb;font-size:12px}
    .footer-links a:hover{color:var(--yellow)}
    .footer-bottom{border-top:1px solid #4a4b43;margin-top:24px;padding-top:14px;color:#c1c2b7;font-size:11px}
    .floating{position:fixed;right:18px;bottom:20px;z-index:8;display:grid;gap:9px}
    .float-button{width:48px;height:48px;display:grid;place-items:center;border:1px solid var(--ink);background:var(--yellow);color:var(--ink);font-size:19px;border-radius:50%;box-shadow:2px 3px 0 var(--ink);cursor:pointer}
    .qr-pop{display:none;position:absolute;right:58px;bottom:0;width:180px;padding:10px;background:var(--white);border:1px solid var(--line);box-shadow:0 5px 20px #20221b22}
    .qr-pop.open{display:block}
    .qr-pop img{display:block;width:100%;aspect-ratio:1;object-fit:contain}
    .qr-pop p{margin:7px 0 0;font-size:12px;text-align:center}
    .reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease}
    .reveal.visible{opacity:1;transform:translateY(0)}
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}*{animation-duration:.01ms!important;transition-duration:.01ms!important}}
    @media(max-width:980px){
      .nav{gap:12px}.nav-right{gap:10px}.nav-links{display:none;position:absolute;top:73px;left:0;right:0;padding:12px 20px 18px;background:var(--paper);border-bottom:1px solid var(--line);grid-template-columns:repeat(3,1fr)}
      .nav-links.open{display:grid}.nav-links a{padding:10px}.menu-toggle{display:block}.nav-cta{padding:10px 12px}
      .industry-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:680px){
      .container{width:min(var(--container),calc(100% - 30px))}
      .nav{min-height:66px}.nav-links{top:65px;grid-template-columns:repeat(2,1fr)}
      .brand-name{font-size:16px}.ai-page-logo{width:35px;height:35px}
      .nav-cta{font-size:11px;padding:9px}
      .hero{padding:57px 0 35px}.hero::before{right:-145px;top:125px;width:230px}.hero::after{right:30px;top:173px;width:70px;height:70px}
      h1{font-size:43px;max-width:500px}.hero-copy{font-size:15px;max-width:460px}
      .hero-strip{grid-template-columns:repeat(2,1fr);row-gap:14px;margin-top:40px}.hero-stat{padding-top:13px}
      .section{padding:54px 0}.section-head{display:block}.section-intro{margin-top:12px}
      .about-grid,.solution-grid,.network,.match,.info-grid{grid-template-columns:1fr;gap:26px}
      .service-grid{grid-template-columns:1fr 1fr}.service{padding:16px;min-height:0}
      .workflow{grid-template-columns:1fr 1fr;gap:24px 18px}
      .case-grid,.review-grid{grid-template-columns:1fr 1fr}
      .score-row{align-items:flex-start}
      .contact-inner,.footer-main{align-items:flex-start;flex-direction:column}
    }
    @media(max-width:430px){
      .nav-cta{display:none}.hero-actions .button{width:100%}
      .service-grid,.case-grid,.review-grid,.industry-grid{grid-template-columns:1fr}
      .solution-points,.feature-list,.form-grid{grid-template-columns:1fr}
      .field.full{grid-column:auto}
      .workflow{gap:22px 14px}
      .contact-inner h2{font-size:26px}
    }