:root{
      --green:#79c900;
      --green-dark:#3b7600;
      --green-deep:#163d24;
      --mint:#effbdc;
      --lime:#d9f99d;
      --ink:#17251a;
      --muted:#617066;
      --line:#dce8d8;
      --paper:#fbfdf8;
      --white:#fff;
      --yellow:#f7c843;
      --shadow:0 18px 45px rgba(41,82,35,.10);
      --container:min(1180px,calc(100% - 36px));
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;height:auto;display:block}
    .container{width:var(--container);margin:0 auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(251,253,248,.94);border-bottom:1px solid rgba(220,232,216,.9);backdrop-filter:blur(14px)}
    .nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .brand{display:flex;align-items:center;flex:0 0 auto}
    .ai-page-logo{width:142px;max-height:44px;object-fit:contain}
    .nav-links{display:flex;align-items:center;gap:0;justify-content:flex-end;flex-wrap:wrap}
    .nav-links a{font-size:13px;color:#405145;padding:8px 9px;border-radius:7px;transition:.25s}
    .nav-links a:hover{background:var(--mint);color:var(--green-dark)}
    .nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:6px;background:var(--green);color:#17320e;font-weight:800;padding:12px 19px;cursor:pointer;transition:transform .22s,box-shadow .22s,background .22s}
    .nav-cta:hover,.button:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(121,201,0,.25);background:#8cdb18}
    .menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:6px;padding:9px 11px;color:var(--green-dark);font-size:20px}
    .hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#f4ffdf 0%,#fbfdf8 52%,#e7f8ce 100%);padding:80px 0 64px;border-bottom:1px solid var(--line)}
    .hero:before,.hero:after{content:"";position:absolute;border:1px solid rgba(121,201,0,.25);transform:rotate(18deg);pointer-events:none}
    .hero:before{width:330px;height:330px;right:-100px;top:-115px;border-radius:34px}
    .hero:after{width:180px;height:180px;left:-80px;bottom:-85px;border-radius:50%}
    .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green-dark);font-weight:800;font-size:14px;letter-spacing:.02em}
    .eyebrow:before{content:"";width:28px;height:3px;background:var(--green);border-radius:4px}
    h1,h2,h3{margin:0 0 16px;line-height:1.2;letter-spacing:0}
    h1{font-size:clamp(38px,5.2vw,68px);max-width:700px}
    h2{font-size:clamp(28px,3.3vw,44px)}
    h3{font-size:20px}
    .hero h1 span{color:var(--green-dark)}
    .hero-copy{font-size:18px;color:#506153;max-width:650px;margin:0 0 28px}
    .actions{display:flex;gap:12px;flex-wrap:wrap}
    .button.secondary{background:#fff;border:1px solid #b7d99d;color:var(--green-dark)}
    .hero-panel{border-left:4px solid var(--green);padding:12px 0 12px 24px}
    .hero-panel strong{display:block;font-size:25px;margin-bottom:9px}
    .hero-panel p{margin:0;color:var(--muted)}
    .hero-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:42px}
    .metric{background:#fff;border:1px solid var(--line);padding:18px 15px;border-radius:8px;box-shadow:0 10px 26px rgba(45,90,30,.06)}
    .metric b{display:block;color:var(--green-dark);font-size:25px}
    .metric span{color:var(--muted);font-size:13px}
    section{padding:88px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:34px}
    .section-head p{max-width:570px;margin:0;color:var(--muted)}
    .kicker{color:var(--green-dark);font-weight:800;font-size:13px;text-transform:uppercase;letter-spacing:.08em}
    .about{background:#fff}
    .about-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start}
    .about-lead{font-size:23px;color:var(--green-deep);line-height:1.5}
    .about-copy{color:var(--muted);margin:0 0 24px}
    .tag-cloud{display:flex;gap:9px;flex-wrap:wrap}
    .tag{border:1px solid #cfe3c5;background:#f8fff1;padding:7px 12px;border-radius:20px;color:#47732d;font-size:13px}
    .service-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .service-card{background:#fff;border:1px solid var(--line);padding:23px;border-radius:8px;transition:.25s}
    .service-card:hover,.review:hover,.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#b8da9d}
    .service-icon{width:38px;height:38px;border-radius:8px;background:var(--lime);display:grid;place-items:center;color:var(--green-dark);font-weight:900;margin-bottom:18px}
    .service-card p,.case-card p,.review p{font-size:14px;color:var(--muted);margin:0}
    .workflow{background:var(--green-deep);color:#fff}
    .workflow .kicker{color:#b9ee6d}
    .workflow .section-head p{color:#c7d9c3}
    .steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-top:1px solid rgba(217,249,157,.35)}
    .step{padding:26px 18px 6px 0;position:relative}
    .step:not(:last-child):after{content:"→";position:absolute;right:18px;top:23px;color:#a9e85b;font-size:24px}
    .step-number{color:#a9e85b;font-size:13px;font-weight:900;display:block;margin-bottom:15px}
    .step p{color:#c7d9c3;font-size:14px;margin:0}
    .solutions{background:#f1f9e9}
    .solution-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .solution{background:#fff;padding:22px;border-top:3px solid var(--green);border-radius:7px}
    .solution h3{font-size:18px}
    .solution p{color:var(--muted);font-size:14px;margin:0}
    .network{background:#fff}
    .network-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
    .network-box{border:1px solid var(--line);padding:26px;border-radius:8px;background:linear-gradient(140deg,#fff,#f5fbe9)}
    .model-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
    .model{padding:7px 10px;background:#edf8df;color:#4c762e;border-radius:4px;font-size:13px}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}
    .time-item{padding:22px;background:#fff;border-left:3px solid var(--green);border-radius:0 7px 7px 0}
    .time-item b{color:var(--green-dark)}
    .time-item p{font-size:14px;color:var(--muted);margin:9px 0 0}
    .cases{background:#f7fbf3}
    .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .case-card{background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden;transition:.25s}
    .case-card .case-image{background:#eaf6d9;aspect-ratio:16/8;overflow:hidden}
    .case-card .case-image img{width:100%;height:100%;object-fit:cover}
    .case-body{padding:20px}
    .case-label{color:var(--green-dark);font-size:12px;font-weight:800}
    .compare{background:#fff}
    .score-board{display:grid;grid-template-columns:240px 1fr;gap:28px;margin-bottom:30px}
    .score{background:var(--green-deep);color:#fff;border-radius:8px;padding:30px;text-align:center}
    .score strong{font-size:56px;display:block;color:#caff83;line-height:1}
    .stars{color:#f9cc43;letter-spacing:3px;font-size:20px;margin:12px 0}
    .score p{margin:0;color:#d9ead2;font-size:13px}
    .table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:8px}
    table{width:100%;border-collapse:collapse;min-width:700px;background:#fff}
    th,td{padding:16px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}
    th{background:#f1f9e9;color:var(--green-dark)}
    tr:last-child td{border-bottom:0}
    td:first-child{font-weight:700}
    .good{color:var(--green-dark);font-weight:800}
    .match{background:#eaf7d8}
    .match-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:50px;align-items:start}
    .match-intro p{color:var(--muted)}
    .form-card{background:#fff;border:1px solid var(--line);padding:28px;border-radius:8px;box-shadow:var(--shadow)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    label{display:block;font-size:13px;font-weight:700;color:#3f5843}
    input,select,textarea{width:100%;margin-top:7px;border:1px solid #cfe1ca;border-radius:5px;padding:12px 13px;font:inherit;color:var(--ink);background:#fcfffa;outline:none}
    input:focus,select:focus,textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(121,201,0,.13)}
    textarea{min-height:120px;resize:vertical}
    .full{grid-column:1/-1}
    .token{background:#173b25;color:#fff}
    .token .section-head p{color:#c9ddc6}
    .token-layout{display:grid;grid-template-columns:1fr 1fr;gap:25px}
    .price-list{border-top:1px solid rgba(217,249,157,.35)}
    .price-row{display:flex;justify-content:space-between;gap:20px;padding:15px 0;border-bottom:1px solid rgba(217,249,157,.35);color:#dbebd5}
    .price-row strong{color:#caff83}
    .notice{padding:19px;background:#275630;border-left:3px solid #b8ef69;color:#dbead6;font-size:14px}
    .reviews{background:#fff}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review{border:1px solid var(--line);background:#fbfef9;padding:22px;border-radius:8px;transition:.25s}
    .review-top{display:flex;justify-content:space-between;gap:10px;margin-bottom:10px}
    .review-top b{font-size:15px}
    .review-top span{font-size:12px;color:#76966c}
    .faq{background:#f2faeb}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    details{background:#fff;border:1px solid var(--line);border-radius:6px;padding:17px 19px}
    summary{cursor:pointer;font-weight:800;color:#29482c;list-style:none;padding-right:22px;position:relative}
    summary:after{content:"+";position:absolute;right:0;color:var(--green-dark);font-size:20px;top:-4px}
    details[open] summary:after{content:"−"}
    details p{font-size:14px;color:var(--muted);margin:12px 0 0}
    .knowledge{background:#fff}
    .article-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px}
    .article-feature{padding:28px;background:#f0f9e5;border-radius:8px;border-left:5px solid var(--green)}
    .article-feature p,.article-list a{color:var(--muted);font-size:14px}
    .article-list{border-top:1px solid var(--line)}
    .article-list a{display:block;padding:14px 0;border-bottom:1px solid var(--line);transition:.2s}
    .article-list a:hover{color:var(--green-dark);padding-left:7px}
    .join{background:linear-gradient(135deg,#e7f9c9,#f9fff3)}
    .join-grid{display:grid;grid-template-columns:1fr 1fr;gap:35px;align-items:center}
    .join-list{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin-top:24px}
    .join-item{background:#fff;padding:15px;border:1px solid var(--line);border-radius:6px;font-size:14px}
    .contact{background:#fff}
    .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
    .contact-list{display:grid;gap:13px;margin-top:24px}
    .contact-row{display:flex;gap:12px;align-items:flex-start}
    .contact-mark{width:30px;height:30px;background:var(--lime);display:grid;place-items:center;border-radius:5px;color:var(--green-dark);font-weight:900}
    .contact-row div:last-child{color:var(--muted)}
    .qr{width:148px;border:8px solid #fff;box-shadow:0 8px 20px rgba(0,0,0,.12);margin-top:18px}
    footer{background:#15351f;color:#dbe9d6;padding:45px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.1fr .8fr 1.1fr;gap:35px;padding-bottom:30px;border-bottom:1px solid rgba(220,240,210,.18)}
    footer h3{color:#d6fa9f;font-size:17px}
    footer p,footer a{font-size:13px;color:#bdd0ba}
    footer a:hover{color:#d6fa9f}
    .footer-links{display:flex;flex-wrap:wrap;gap:9px 15px}
    .copyright{padding-top:20px;color:#a7bda4;font-size:12px}
    .float-help{position:fixed;right:20px;bottom:22px;z-index:15;display:flex;align-items:center;gap:8px;background:var(--green);color:#17320e;border-radius:24px;padding:10px 16px;font-size:13px;font-weight:800;box-shadow:0 10px 25px rgba(47,89,24,.25)}
    .reveal{opacity:0;transform:translateY(18px);transition:opacity .65s ease,transform .65s ease}
    .reveal.visible{opacity:1;transform:none}
    @media(max-width:1050px){
      .nav-links a{padding:8px 6px;font-size:12px}
      .nav-cta{padding:10px 13px;font-size:13px}
      .service-grid{grid-template-columns:repeat(2,1fr)}
      .hero-grid{gap:35px}
    }
    @media(max-width:800px){
      :root{--container:calc(100% - 28px)}
      .nav-wrap{min-height:68px}
      .menu-toggle{display:block}
      .nav-links{display:none;position:absolute;left:14px;right:14px;top:68px;background:#fff;border:1px solid var(--line);padding:8px;box-shadow:var(--shadow);border-radius:7px;justify-content:flex-start}
      .nav-links.open{display:flex}
      .nav-links a{width:50%;padding:10px}
      .nav-cta{display:none}
      section{padding:62px 0}
      .hero{padding:58px 0 48px}
      .hero-grid,.about-grid,.network-grid,.match-grid,.token-layout,.join-grid,.contact-grid,.article-grid{grid-template-columns:1fr}
      .hero-metrics{margin-top:28px}
      .section-head{display:block;margin-bottom:25px}
      .section-head p{margin-top:12px}
      .steps{grid-template-columns:1fr 1fr;border-top:0;gap:12px}
      .step{border-top:1px solid rgba(217,249,157,.35);padding-top:17px}
      .step:not(:last-child):after{display:none}
      .timeline{grid-template-columns:1fr 1fr}
      .case-grid,.review-grid{grid-template-columns:1fr 1fr}
      .score-board{grid-template-columns:1fr}
      .faq-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:520px){
      h1{font-size:39px}
      .hero-copy{font-size:16px}
      .hero-metrics,.service-grid,.solution-grid,.case-grid,.review-grid,.timeline,.join-list,.footer-grid{grid-template-columns:1fr}
      .form-grid{grid-template-columns:1fr}
      .full{grid-column:auto}
      .float-help{right:12px;bottom:12px}
      .float-help span{display:none}
    }