:root{--ink:#172321;--muted:#596762;--paper:#f7faf7;--line:#dce7df;--green:#b7f34a;--teal:#087f78;--coral:#ff765f;--white:#fff;--container:1180px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:86px}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"Noto Sans SC","Microsoft YaHei",sans-serif;line-height:1.65}
    a{color:inherit}
    button,input,select,textarea{font:inherit}
    .container{width:min(var(--container),calc(100% - 40px));margin-inline:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(247,250,247,.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:18px}
    .brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;white-space:nowrap}
    .ai-page-logo{width:38px;max-width:100%;height:auto}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;flex-wrap:wrap}
    .nav-links a{padding:9px 10px;text-decoration:none;color:#34443e;font-size:13px}
    .nav-links a:hover{color:var(--teal)}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;border:0;background:var(--ink);color:white;text-decoration:none;padding:11px 17px;font-weight:700;border-radius:4px;transition:transform .2s,background .2s}
    .nav-cta:hover,.button:hover{transform:translateY(-2px);background:var(--teal)}
    .menu-toggle{display:none;background:none;border:1px solid var(--line);padding:8px 11px;border-radius:4px;color:var(--ink)}
    .hero{overflow:hidden;background:#d9f9a5;border-bottom:1px solid #b7d58e}
    .hero-inner{position:relative;padding:76px 0 48px;min-height:470px}
    .hero-inner:after{content:"";position:absolute;right:3%;top:40px;width:310px;aspect-ratio:1;border:1px solid rgba(23,35,33,.19);border-radius:50%;box-shadow:0 0 0 28px rgba(255,255,255,.15),0 0 0 58px rgba(255,255,255,.12);pointer-events:none}
    .hero-copy{position:relative;z-index:1;max-width:720px}
    .eyebrow{margin:0 0 14px;color:#315a39;font-size:13px;font-weight:800;text-transform:uppercase}
    h1{font-size:clamp(38px,6vw,68px);line-height:1.12;margin:0 0 18px;max-width:680px}
    .hero p{max-width:610px;color:#34443a;font-size:17px;margin:0 0 25px}
    .button-light{background:var(--white);color:var(--ink);border:1px solid rgba(23,35,33,.18)}
    .button-light:hover{background:#fff}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-note{margin-top:33px;display:flex;gap:24px;flex-wrap:wrap;font-size:13px;color:#3a5540}
    .hero-note span:before{content:"+";font-weight:900;margin-right:7px;color:#287a54}
    .ticker{background:var(--ink);color:#eff9e9;overflow:hidden}
    .ticker-inner{padding:13px 0;display:flex;gap:28px;align-items:center;white-space:nowrap;overflow:auto;font-size:13px}
    .ticker strong{color:var(--green)}
    section.content-section{padding:74px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:30px}
    .section-head h2{font-size:32px;line-height:1.2;margin:0}
    .section-head p{max-width:540px;margin:0;color:var(--muted)}
    .kicker{font-size:12px;font-weight:800;letter-spacing:1px;color:var(--teal);margin:0 0 8px}
    .intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:start}
    .intro-copy{font-size:17px;color:#40504a}
    .intro-copy p{margin:0 0 16px}
    .capability-list{display:grid;grid-template-columns:1fr 1fr;gap:0 24px;border-top:1px solid var(--line)}
    .capability-list div{padding:15px 0;border-bottom:1px solid var(--line);font-weight:700}
    .capability-list span{display:block;color:var(--muted);font-size:13px;font-weight:400}
    .stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .stat{padding:22px 18px;border-right:1px solid var(--line)}
    .stat:last-child{border-right:0}
    .stat strong{display:block;font-size:25px}
    .stat span{color:var(--muted);font-size:13px}
    .service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#cbd9d0;border:1px solid #cbd9d0}
    .service{background:var(--paper);padding:23px;transition:background .2s,transform .2s}
    .service:hover{background:#eff9e7;transform:translateY(-3px)}
    .service .index{font-size:12px;color:var(--teal);font-weight:800}
    .service h3{font-size:18px;margin:10px 0 7px}
    .service p{margin:0;color:var(--muted);font-size:14px}
    .service a{display:inline-block;margin-top:13px;font-size:13px;font-weight:700;color:var(--teal);text-decoration:none}
    .band{background:#eaf2eb}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
    .step{border-top:3px solid var(--teal);padding-top:16px}
    .step b{font-size:13px;color:var(--teal)}
    .step h3{margin:7px 0;font-size:18px}
    .step p{margin:0;color:var(--muted);font-size:14px}
    .solutions{display:grid;grid-template-columns:1fr 1fr;gap:38px}
    .solution-column h3{margin:0 0 14px}
    .solution-column ul{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
    .solution-column li{padding:12px 0;border-bottom:1px solid var(--line);color:#40504a}
    .solution-column li strong{color:var(--ink)}
    .network{background:var(--ink);color:#f2f8f1;padding:30px}
    .network p{color:#d2ded6;margin:0 0 18px}
    .tag-cloud{display:flex;gap:8px;flex-wrap:wrap}
    .tag-cloud span{border:1px solid #52625b;padding:6px 10px;font-size:13px;color:#f2f8f1}
    .gallery{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:18px;align-items:start}
    .gallery figure{margin:0}
    .gallery img,.article-image{display:block;width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;border:1px solid var(--line)}
    .gallery figure:nth-child(3) img{aspect-ratio:1}
    figcaption{font-size:14px;font-weight:700;margin-top:9px}
    .comparison{width:100%;border-collapse:collapse;background:#fff}
    .comparison th,.comparison td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
    .comparison th{background:#eaf2eb;font-size:13px}
    .comparison td{font-size:14px}
    .comparison td:first-child{font-weight:700}
    .table-wrap{overflow-x:auto;border:1px solid var(--line)}
    .score{display:flex;align-items:center;gap:20px;margin-bottom:22px;padding:20px 22px;background:var(--green)}
    .score strong{font-size:32px}
    .score span{font-size:14px;font-weight:700}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
    .review{padding:20px 0;border-top:2px solid var(--coral)}
    .review blockquote{margin:0 0 14px;color:#34443e}
    .review cite{font-style:normal;color:var(--muted);font-size:13px}
    .articles{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
    .article{display:block;padding:16px;background:#fff;border:1px solid var(--line);text-decoration:none;transition:transform .2s}
    .article:hover{transform:translateY(-3px)}
    .article small{display:block;color:var(--teal);margin-bottom:8px}
    .article strong{font-size:14px}
    .token-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:38px;align-items:start}
    .token-layout p{color:var(--muted);margin-top:0}
    .token-points{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .token-points div{padding:14px 16px;border-left:3px solid var(--coral);background:#fff}
    .token-points strong{display:block}
    .token-points span{font-size:13px;color:var(--muted)}
    .faq-list{border-top:1px solid var(--line)}
    details{border-bottom:1px solid var(--line);padding:17px 0}
    summary{cursor:pointer;list-style:none;font-weight:700;display:flex;justify-content:space-between;gap:18px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";color:var(--teal);font-size:20px;line-height:1}
    details[open] summary:after{content:"−"}
    details p{max-width:850px;color:var(--muted);margin:12px 0 0}
    .contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:42px;align-items:start}
    .contact-info{padding:24px;background:#eaf2eb}
    .contact-info p{margin:7px 0;color:#40504a}
    .contact-info a{color:var(--teal)}
    .qr{width:min(180px,100%);height:auto;margin-top:15px;border:1px solid var(--line)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    .field{display:flex;flex-direction:column;gap:6px}
    .field.full{grid-column:1/-1}
    .field label{font-size:13px;font-weight:700}
    .field input,.field select,.field textarea{width:100%;padding:11px 12px;border:1px solid #bdccc2;background:white;color:var(--ink);border-radius:2px}
    .field textarea{min-height:110px;resize:vertical}
    .form-submit{margin-top:16px;cursor:pointer}
    .site-footer{background:#e5eee7;color:#26352f;border-top:1px solid var(--line);padding:28px 0}
    .footer-main{display:flex;justify-content:space-between;gap:25px;align-items:start}
    .footer-links{display:flex;gap:8px 16px;flex-wrap:wrap}
    .footer-links a{font-size:13px;color:#34443e}
    .copyright{font-size:12px;color:#596762;margin:18px 0 0}
    .floating{position:fixed;right:18px;bottom:20px;z-index:15;display:flex;flex-direction:column;gap:8px}
    .floating a{background:var(--ink);color:#fff;text-decoration:none;padding:10px 13px;font-size:13px;border-radius:3px;box-shadow:0 4px 16px #17232124}
    .floating a:hover{background:var(--teal)}
    .top-link{position:fixed;right:22px;bottom:120px;z-index:14;display:none;padding:10px 12px;background:var(--green);color:var(--ink);text-decoration:none;font-weight:800}
    .top-link.visible{display:block}
    .reveal{opacity:0;transform:translateY(14px);transition:opacity .55s,transform .55s}
    .reveal.in-view{opacity:1;transform:none}
    @media(max-width:900px){
      .nav-links{display:none;position:absolute;top:74px;left:0;right:0;background:var(--paper);padding:12px 20px 18px;border-bottom:1px solid var(--line);align-items:stretch}
      .nav-links.open{display:grid;grid-template-columns:repeat(3,1fr)}
      .menu-toggle{display:inline-flex}
      .nav-cta{display:none}
      .intro-grid,.token-layout,.contact-grid{grid-template-columns:1fr}
      .service-grid{grid-template-columns:repeat(2,1fr)}
      .articles{grid-template-columns:repeat(3,1fr)}
      .gallery{grid-template-columns:1fr 1fr}
      .gallery figure:first-child{grid-column:1/-1}
      .hero-inner:after{right:-90px;opacity:.55}
    }
    @media(max-width:600px){
      .container{width:min(var(--container),calc(100% - 30px))}
      .nav{min-height:66px}
      .nav-links{top:66px}
      .nav-links.open{grid-template-columns:repeat(2,1fr)}
      .brand{font-size:14px}
      .hero-inner{padding:58px 0 35px;min-height:0}
      .hero-inner:after{width:190px;top:90px;right:-100px}
      .hero p{font-size:15px}
      section.content-section{padding:54px 0}
      .section-head{display:block}
      .section-head h2{font-size:27px;margin-bottom:12px}
      .stats{grid-template-columns:1fr 1fr}
      .stat:nth-child(2){border-right:0}
      .stat:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .service-grid{grid-template-columns:1fr}
      .workflow{grid-template-columns:1fr 1fr;gap:22px 16px}
      .solutions,.reviews{grid-template-columns:1fr}
      .gallery{grid-template-columns:1fr}
      .gallery figure:first-child{grid-column:auto}
      .articles{grid-template-columns:1fr 1fr}
      .token-points{grid-template-columns:1fr}
      .score{align-items:flex-start;flex-direction:column;gap:2px}
      .form-grid{grid-template-columns:1fr}
      .field.full{grid-column:auto}
      .footer-main{display:block}
      .footer-links{margin-top:15px}
      .comparison th,.comparison td{padding:11px;min-width:130px}
      .floating{right:10px;bottom:12px}
      .floating a{padding:8px 10px}
    }
    @media(prefers-reduced-motion:reduce){
      *,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
      .reveal{opacity:1;transform:none}
    }