:root{--ink:#172126;--muted:#59666c;--paper:#f7f8f6;--white:#fff;--line:#dfe6e2;--green:#b8f34a;--green-dark:#345b16;--cyan:#65d8ca;--coral:#ff785e;--violet:#8a72ef;--max:1160px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:84px}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","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:20;background:rgba(247,248,246,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(23,33,38,.09)}
    .nav-row{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;flex:none;font-weight:800}
    .ai-page-logo{display:block;width:42px;height:42px;object-fit:contain}
    .brand-name{font-size:17px;letter-spacing:0}
    .nav-links{display:flex;align-items:center;justify-content:flex-end;gap:0;flex-wrap:wrap;font-size:13px;color:#445157}
    .nav-links a{padding:9px 8px;transition:color .2s ease}
    .nav-links a:hover{color:#527d16}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 17px;border:1px solid var(--ink);border-radius:4px;background:var(--ink);color:#fff;font-weight:700;transition:transform .2s,background .2s,box-shadow .2s}
    .nav-cta{flex:none;font-size:13px}
    .button:hover,.nav-cta:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(23,33,38,.15)}
    .button-lime{background:var(--green);color:var(--ink);border-color:var(--green)}
    .button-outline{background:transparent;color:var(--ink)}
    .menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:4px;width:42px;height:42px;color:var(--ink);font-size:20px}
    .hero{position:relative;overflow:hidden;background:#19251e;color:#fff;padding:78px 0 56px}
    .hero:before{content:"";position:absolute;inset:0;background:linear-gradient(115deg,transparent 0 62%,rgba(184,243,74,.1) 62% 62.2%,transparent 62.2%),linear-gradient(25deg,transparent 0 77%,rgba(101,216,202,.11) 77% 77.2%,transparent 77.2%);pointer-events:none}
    .hero-inner{position:relative;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(250px,.65fr);gap:56px;align-items:center}
    .eyebrow{margin:0 0 14px;color:#c5ef83;font-size:12px;font-weight:800;letter-spacing:0}
    h1{max-width:680px;margin:0;font-size:clamp(38px,6vw,68px);line-height:1.12;letter-spacing:0}
    .hero-copy{max-width:650px;margin:22px 0 27px;color:#d5ded7;font-size:17px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px}
    .hero .button-outline{color:#fff;border-color:#718078}
    .hero-side{border-left:1px solid rgba(255,255,255,.22);padding:8px 0 8px 28px}
    .hero-side strong{display:block;font-size:34px;color:var(--green);line-height:1.1}
    .hero-side p{margin:8px 0 20px;color:#d4ddd6;font-size:14px}
    .hero-side .platform-list{font-size:13px;color:#e0e8e1;line-height:1.9}
    .hero-bottom{position:relative;display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:54px;padding-top:18px;border-top:1px solid rgba(255,255,255,.2);color:#cbd5cd;font-size:13px}
    .hero-bottom span{display:inline-block;margin-right:18px}
    .section{padding:76px 0}
    .section-tint{background:#eef2ec}
    .section-dark{background:#202b26;color:#fff}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px}
    .section-head h2{max-width:690px;margin:0;font-size:clamp(28px,4vw,42px);line-height:1.2;letter-spacing:0}
    .section-head p{max-width:440px;margin:0;color:var(--muted);font-size:14px}
    .section-dark .section-head p{color:#c5d0c8}
    .kicker{margin:0 0 10px;color:#63852d;font-size:12px;font-weight:800}
    .intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:start}
    .intro-text{font-size:17px;color:#465258}
    .intro-text p{margin:0 0 16px}
    .feature-list{display:grid;grid-template-columns:1fr 1fr;gap:0 22px;border-top:1px solid var(--line)}
    .feature-line{padding:14px 0;border-bottom:1px solid var(--line);font-size:14px}
    .feature-line strong{display:block;margin-bottom:3px}
    .feature-line span{color:var(--muted)}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);border-block:1px solid var(--line)}
    .metric{padding:24px 20px;border-right:1px solid var(--line)}
    .metric:last-child{border-right:0}
    .metric strong{display:block;font-size:22px}
    .metric span{font-size:13px;color:var(--muted)}
    .service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0 26px;border-top:1px solid var(--line)}
    .service{position:relative;padding:22px 6px 24px 0;border-bottom:1px solid var(--line);transition:transform .2s}
    .service:hover{transform:translateY(-3px)}
    .service .index{color:#63852d;font-size:12px;font-weight:800}
    .service h3{margin:7px 0;font-size:19px}
    .service p{margin:0;color:var(--muted);font-size:14px}
    .service-tag{display:inline-block;margin-top:12px;color:#45671c;font-size:12px;font-weight:700}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
    .workflow article{counter-increment:step;padding:18px 0;border-top:2px solid var(--green);background:transparent}
    .workflow article:before{content:"0" counter(step);display:block;color:#7c9b4b;font-weight:800;font-size:13px}
    .workflow h3{margin:13px 0 5px;font-size:17px}
    .workflow p{margin:0;color:#cbd5cd;font-size:13px}
    .image-pair{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}
    .image-frame{overflow:hidden;background:#e2e8e2;border:1px solid var(--line)}
    .image-frame img{display:block;width:100%;height:auto;max-width:100%;object-fit:contain}
    .image-caption{padding:12px 14px;color:#455158;font-size:13px}
    .image-square{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .industry-strip{display:flex;flex-wrap:wrap;gap:10px}
    .industry-strip span{padding:9px 13px;border:1px solid #cbd5cd;border-radius:2px;background:#fff;font-size:13px}
    .network{display:grid;grid-template-columns:1fr 1fr;gap:38px;align-items:center}
    .network-copy p{color:var(--muted)}
    .model-cloud{display:flex;flex-wrap:wrap;gap:8px}
    .model-cloud span{padding:7px 10px;border:1px solid #cbd5cd;background:#fff;font-size:12px}
    .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .case{padding:20px;border:1px solid var(--line);background:#fff}
    .case small{color:#658134;font-weight:800}
    .case h3{margin:8px 0;font-size:18px}
    .case p{margin:0;color:var(--muted);font-size:14px}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0 24px}
    .review{padding:20px 0;border-top:1px solid rgba(255,255,255,.26)}
    .review blockquote{margin:0 0 14px;color:#e5ece6;font-size:14px}
    .review cite{font-style:normal;color:#c3ed7a;font-weight:700;font-size:13px}
    .compare-wrap{overflow-x:auto;border:1px solid var(--line);background:#fff}
    table{width:100%;min-width:700px;border-collapse:collapse;text-align:left}
    th,td{padding:14px 16px;border-bottom:1px solid var(--line);font-size:14px}
    th{background:#eaf0e6;font-size:13px}
    tr:last-child td{border-bottom:0}
    .rating{display:flex;align-items:center;gap:18px;margin-bottom:20px;padding:18px 20px;background:#e8f4d8}
    .rating strong{font-size:34px;line-height:1}
    .stars{color:#4d7c16;letter-spacing:0}
    .rating span{font-size:13px;color:#445248}
    .request-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:40px;align-items:start}
    .request-copy p{color:var(--muted)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .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 #ccd6d0;border-radius:3px;background:#fff;color:var(--ink)}
    .field textarea{min-height:118px;resize:vertical}
    .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;list-style:none;font-weight:700}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";position:absolute;right:4px;top:12px;font-size:22px;color:#62812f}
    details[open] summary:after{content:"−"}
    details p{max-width:820px;margin:0;padding:0 30px 18px 0;color:var(--muted);font-size:14px}
    .article-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    .article-link{display:block;padding:16px;border-left:2px solid var(--cyan);background:#fff;min-height:90px}
    .article-link small{display:block;color:#63852d;font-size:11px;margin-bottom:6px}
    .article-link strong{font-size:14px;line-height:1.5}
    .footer{background:#e6ebe6;color:#263239;border-top:1px solid #d2dad4}
    .footer-main{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;padding:34px 0}
    .footer p{margin:7px 0;color:#4b595e;font-size:14px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px 18px;align-content:start;font-size:13px}
    .footer-links a{text-decoration:underline;text-decoration-color:#9eaaa3;text-underline-offset:3px}
    .footer-bottom{padding:13px 0;border-top:1px solid #cbd4ce;font-size:12px;color:#58656a}
    .contact-float{position:fixed;right:18px;bottom:20px;z-index:15;display:grid;gap:8px}
    .contact-float a{display:inline-flex;align-items:center;justify-content:center;padding:10px 14px;background:var(--green);color:#172126;border:1px solid #a5d83f;border-radius:3px;font-size:13px;font-weight:800;box-shadow:0 5px 18px rgba(23,33,38,.16)}
    .contact-float a:last-child{background:#fff;border-color:var(--line)}
    .reveal{opacity:0;transform:translateY(14px);transition:opacity .55s ease,transform .55s ease}
    .reveal.is-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-links{display:none;position:absolute;top:72px;left:0;right:0;padding:12px 20px 18px;background:var(--paper);border-bottom:1px solid var(--line);align-items:flex-start;justify-content:flex-start;gap:0}
      .nav-links.open{display:flex;flex-direction:column}
      .nav-links a{width:100%;padding:8px 0}
      .menu-toggle{display:block;margin-left:auto}
      .nav-cta{display:none}
      .hero-inner{gap:32px}
      .service-grid{grid-template-columns:repeat(2,1fr)}
      .article-grid{grid-template-columns:repeat(3,1fr)}
    }
    @media(max-width:680px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .hero{padding:58px 0 38px}
      .hero-inner,.intro-grid,.network,.request-grid,.footer-main{grid-template-columns:1fr}
      .hero-side{border-left:0;border-top:1px solid rgba(255,255,255,.22);padding:18px 0 0}
      .hero-bottom{align-items:flex-start;flex-direction:column;margin-top:34px}
      .section{padding:56px 0}
      .section-head{align-items:flex-start;flex-direction:column}
      .metrics{grid-template-columns:1fr 1fr}
      .metric:nth-child(2){border-right:0}
      .metric:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .service-grid,.workflow,.case-grid,.review-grid{grid-template-columns:1fr}
      .image-pair{grid-template-columns:1fr}
      .image-square{grid-template-columns:1fr 1fr}
      .article-grid{grid-template-columns:1fr 1fr}
      .form-grid{grid-template-columns:1fr}
      .field-full{grid-column:auto}
      .contact-float{right:10px;bottom:10px}
      .contact-float a{padding:9px 11px}
    }