:root{--ink:#192c35;--muted:#53666b;--paper:#f7f8f4;--white:#fff;--line:#dce5df;--teal:#087e78;--orange:#e76e4d;--lime:#d7ed79;--blue:#dceef0;--max:1180px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.65}
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    .container{width:min(var(--max),calc(100% - 40px));margin-inline:auto}
    .site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.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:20px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:800;white-space:nowrap}
    .ai-page-logo{width:40px;height:40px;object-fit:contain}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;flex-wrap:wrap}
    .nav-links a{padding:9px 11px;color:var(--muted);font-size:13px}
    .nav-links a:hover{color:var(--teal)}
    .nav-links .nav-cta{margin-left:8px;padding:10px 16px;border-radius:4px;background:var(--teal);color:white}
    .menu-toggle{display:none;border:1px solid var(--line);border-radius:4px;background:white;padding:8px 11px;color:var(--ink)}
    .hero{position:relative;overflow:hidden;background:#dcefeb;border-bottom:1px solid #c9e0d9}
    .hero::before{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 48%,rgba(255,255,255,.5) 48%,rgba(255,255,255,.5) 49%,transparent 49%),linear-gradient(24deg,transparent 68%,rgba(231,110,77,.15) 68%,rgba(231,110,77,.15) 69%,transparent 69%);pointer-events:none}
    .hero-inner{position:relative;padding:76px 0 50px}
    .hero-copy{max-width:760px}
    .eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--teal);font-size:13px;font-weight:700}
    .eyebrow::before{content:"";width:24px;height:2px;background:var(--orange)}
    h1{max-width:700px;margin:17px 0 18px;font-size:clamp(38px,6vw,68px);line-height:1.12;letter-spacing:0}
    .hero-copy p{max-width:650px;margin:0;color:#3e5b5b;font-size:18px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
    .button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border:1px solid var(--teal);border-radius:4px;background:var(--teal);color:white;font-weight:700;transition:transform .2s,background .2s,box-shadow .2s}
    .button:hover{transform:translateY(-2px);box-shadow:0 8px 20px #087e7826}
    .button.secondary{background:transparent;color:var(--ink);border-color:#8bad9f}
    .hero-note{margin-top:15px;color:#53666b;font-size:13px}
    .metric-row{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:48px;border-top:1px solid #b8d4ca}
    .metric{padding:18px 20px 0 0}
    .metric strong{display:block;font-size:22px;color:var(--teal)}
    .metric span{color:var(--muted);font-size:13px}
    main section{padding:70px 0}
    .section-head{max-width:740px;margin-bottom:32px}
    .section-kicker{margin:0 0 8px;color:var(--orange);font-size:13px;font-weight:800;text-transform:uppercase}
    h2{margin:0 0 12px;font-size:clamp(28px,4vw,42px);line-height:1.2;letter-spacing:0}
    .section-head>p:last-child{margin:0;color:var(--muted)}
    .intro{background:#fff}
    .intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:start}
    .intro-copy p{color:var(--muted)}
    .platform-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px;border-top:1px solid var(--line)}
    .platform-points div{padding:14px 0;border-bottom:1px solid var(--line)}
    .platform-points strong{display:block}
    .platform-points span{color:var(--muted);font-size:13px}
    .service-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .service{padding:22px;background:var(--white);border:1px solid var(--line);border-top:3px solid var(--teal);transition:transform .2s,box-shadow .2s}
    .service:nth-child(3n+2){border-top-color:var(--orange)}
    .service:nth-child(3n){border-top-color:#9ab73d}
    .service:hover{transform:translateY(-4px);box-shadow:0 12px 28px #20372e12}
    .service h3{margin:0 0 8px;font-size:18px}
    .service p{margin:0;color:var(--muted);font-size:14px}
    .tag-row{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}
    .tag{padding:7px 11px;border:1px solid #cbdcd5;border-radius:2px;background:#fff;color:#35534d;font-size:13px}
    .workflow{background:#eaf2ee}
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:step}
    .step{position:relative;padding:18px 16px 18px 0;border-top:1px solid #a9c7bb}
    .step::before{counter-increment:step;content:"0" counter(step);display:block;margin-bottom:17px;color:var(--orange);font-size:13px;font-weight:800}
    .step h3{margin:0 0 7px;font-size:17px}
    .step p{margin:0;color:var(--muted);font-size:14px}
    .industry-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .industry{padding:21px 0;border-top:1px solid #b8c9c1}
    .industry h3{margin:0 0 7px;font-size:17px}
    .industry p{margin:0;color:var(--muted);font-size:14px}
    .network{background:#f1f4df}
    .network-layout{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
    .network-list{display:grid;grid-template-columns:repeat(2,1fr);gap:0 22px}
    .network-list div{padding:13px 0;border-bottom:1px solid #d3dcc0}
    .network-list strong{display:block}
    .network-list span{font-size:13px;color:var(--muted)}
    .network-aside{padding:22px;border-left:3px solid var(--orange);background:#fff}
    .network-aside p{margin:0 0 15px;color:var(--muted)}
    .case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
    .case{background:white;border:1px solid var(--line)}
    .case .media{padding:12px;background:#e9efea}
    .case .media img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
    .case-copy{padding:17px}
    .case-copy h3{margin:0 0 6px;font-size:17px}
    .case-copy p{margin:0;color:var(--muted);font-size:14px}
    .review-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .review{padding:20px 0;border-top:2px solid var(--teal)}
    .review blockquote{margin:0 0 14px;color:#354b4b;font-size:15px}
    .review p{margin:0;color:var(--muted);font-size:13px}
    .score-band{display:grid;grid-template-columns:.8fr 1.2fr;gap:35px;align-items:center;padding:30px;background:#f8e5d8;border-left:5px solid var(--orange)}
    .score{font-size:46px;font-weight:800;line-height:1;color:#bd4f32}
    .score small{font-size:16px;color:var(--muted)}
    .stars{color:#9c6927;letter-spacing:0}
    .comparison{width:100%;border-collapse:collapse;background:white;font-size:14px}
    .comparison th,.comparison td{padding:13px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
    .comparison th{background:#edf3ef;color:var(--ink)}
    .comparison td:last-child{color:#17675d;font-weight:700}
    .table-wrap{overflow-x:auto;margin-top:22px}
    .match{background:#fff}
    .match-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start}
    .match-copy p{color:var(--muted)}
    form{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    label{display:grid;gap:6px;font-size:13px;font-weight:700}
    label.full{grid-column:1/-1}
    input,select,textarea{width:100%;padding:11px 12px;border:1px solid #cbd8d1;border-radius:3px;background:#fff;color:var(--ink)}
    textarea{min-height:112px;resize:vertical}
    form .button{justify-self:start;cursor:pointer}
    .faq-list{border-top:1px solid var(--line)}
    details{border-bottom:1px solid var(--line)}
    summary{position:relative;padding:17px 34px 17px 0;cursor:pointer;font-weight:700;list-style:none}
    summary::-webkit-details-marker{display:none}
    summary::after{content:"+";position:absolute;right:5px;top:14px;color:var(--teal);font-size:22px}
    details[open] summary::after{content:"−"}
    details p{max-width:850px;margin:0;padding:0 28px 17px 0;color:var(--muted);font-size:14px}
    .articles{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
    .article-link{display:flex;min-height:88px;align-items:center;justify-content:space-between;gap:12px;padding:15px;border:1px solid var(--line);background:#fff;font-weight:700}
    .article-link span:last-child{color:var(--orange)}
    .contact-band{background:#dcefeb}
    .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
    .contact-details{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .contact-details div{padding:12px 0;border-top:1px solid #b9d2c8}
    .contact-details strong{display:block}
    .contact-details span{color:var(--muted);font-size:14px}
    .qr{width:150px;height:auto;margin-top:10px;border:6px solid #fff}
    .site-footer{padding:28px 0;background:#fff;color:#35484a;border-top:1px solid var(--line)}
    .footer-top{display:flex;justify-content:space-between;align-items:flex-start;gap:24px}
    .footer-links{display:flex;flex-wrap:wrap;gap:8px 17px;max-width:720px}
    .footer-links a{color:#47635d;font-size:13px}
    .copyright{margin:18px 0 0;color:#60716e;font-size:12px}
    .floating{position:fixed;right:18px;bottom:20px;z-index:8;display:grid;gap:8px}
    .floating a{display:grid;place-items:center;min-width:46px;min-height:44px;padding:0 12px;border:1px solid var(--teal);background:#fff;color:var(--teal);font-size:13px;font-weight:700}
    .to-top{display:none!important}
    .to-top.visible{display:grid!important}
    .reveal{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease}
    .reveal.in-view{opacity:1;transform:none}
    @media(max-width:900px){
      .nav{min-height:68px}.menu-toggle{display:block}
      .nav-links{display:none;position:absolute;top:68px;left:0;right:0;padding:12px 20px 18px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 12px 18px #20372e12}
      .nav-links.open{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:2px}
      .nav-links a{padding:10px}.nav-links .nav-cta{margin:4px 0}
      .service-grid,.industry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .articles{grid-template-columns:repeat(3,minmax(0,1fr))}
    }
    @media(max-width:640px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .hero-inner{padding:54px 0 32px}.hero-copy p{font-size:16px}
      .metric-row{grid-template-columns:repeat(2,1fr);row-gap:12px;margin-top:32px}
      main section{padding:52px 0}
      .intro-grid,.network-layout,.match-layout,.contact-grid,.score-band{grid-template-columns:1fr;gap:24px}
      .service-grid,.industry-grid,.review-grid{grid-template-columns:1fr}
      .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
      .case-grid{grid-template-columns:1fr}
      .articles{grid-template-columns:repeat(2,minmax(0,1fr))}
      .network-list{grid-template-columns:1fr 1fr}
      form{grid-template-columns:1fr}
      label.full{grid-column:auto}
      .footer-top{display:grid}
      .contact-details{grid-template-columns:1fr 1fr}
      .floating{right:10px;bottom:12px}
      .floating a{min-width:42px;min-height:40px;padding:0 9px}
    }
    @media(prefers-reduced-motion:reduce){
      *,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
      .reveal{opacity:1;transform:none}
    }