:root{
      --bg:#f5f8f2;
      --surface:#ffffff;
      --surface-2:#f3faf1;
      --line:#dce8d5;
      --text:#17301f;
      --muted:#5b6d60;
      --brand:#31c36b;
      --brand-2:#19a855;
      --brand-3:#dff8e9;
      --shadow:0 14px 30px rgba(28,84,47,.08);
      --shadow-soft:0 10px 20px rgba(28,84,47,.06);
      --radius:18px;
      --radius-lg:24px;
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;background:linear-gradient(180deg,#f8fbf6 0%,#eef6ee 100%);color:var(--text);line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(var(--max),calc(100% - 32px));margin:0 auto}
    .topbar{background:#e8f7eb;border-bottom:1px solid var(--line);color:#225232;font-size:13px}
    .topbar .container{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;flex-wrap:wrap}
    .brandline{display:flex;align-items:center;gap:10px;min-width:0}
    .brandline strong{font-size:16px;letter-spacing:.4px}
    .top-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
    header{position:sticky;top:0;z-index:50;background:rgba(245,248,242,.92);backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid rgba(220,232,213,.85)}
    .navwrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
    .logo-box{display:flex;align-items:center;gap:12px;min-width:0}
    .logo-box .ai-page-logo{width:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;border:1px solid var(--line);padding:6px;box-shadow:var(--shadow-soft)}
    .logo-meta{min-width:0}
    .logo-meta h2{margin:0;font-size:18px;line-height:1.2}
    .logo-meta p{margin:3px 0 0;color:var(--muted);font-size:12px}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;color:var(--text);border-radius:12px;padding:10px 12px;font-size:14px}
    nav{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    nav a{font-size:14px;color:#274635;padding:8px 10px;border-radius:999px;transition:.25s ease}
    nav a:hover{background:var(--brand-3);color:#124b2d}
    .primary-btn,.ghost-btn,.submit-btn,.float-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;border:1px solid transparent;cursor:pointer;transition:.25s ease;font-weight:700}
    .primary-btn,.submit-btn,.float-btn{background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);color:#fff;box-shadow:0 12px 24px rgba(49,195,107,.24)}
    .primary-btn:hover,.submit-btn:hover,.float-btn:hover{transform:translateY(-2px);box-shadow:0 16px 28px rgba(49,195,107,.3)}
    .ghost-btn{background:#fff;border-color:var(--line);color:var(--text)}
    .ghost-btn:hover{border-color:var(--brand);color:var(--brand-2);transform:translateY(-1px)}
    main{overflow:hidden}
    section{padding:64px 0}
    .hero{padding:36px 0 54px;position:relative}
    .hero::before,.hero::after{content:"";position:absolute;inset:auto;border-radius:50%;pointer-events:none;filter:blur(12px);opacity:.55}
    .hero::before{width:240px;height:240px;background:radial-gradient(circle,rgba(49,195,107,.18),transparent 70%);top:0;right:0}
    .hero::after{width:180px;height:180px;background:radial-gradient(circle,rgba(25,168,85,.14),transparent 70%);left:0;bottom:20px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch}
    .hero-card{background:linear-gradient(180deg,#ffffff 0%,#f6fbf4 100%);border:1px solid var(--line);border-radius:28px;padding:28px;box-shadow:var(--shadow);position:relative;overflow:hidden}
    .hero-card::after{content:"";position:absolute;inset:auto -40px -60px auto;width:180px;height:180px;background:radial-gradient(circle,rgba(49,195,107,.14),transparent 70%)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--brand-3);color:#145a35;border-radius:999px;padding:8px 12px;font-size:13px;font-weight:700}
    h1{margin:16px 0 12px;font-size:clamp(30px,5vw,52px);line-height:1.1;letter-spacing:-.5px}
    .hero p{margin:0;color:var(--muted);font-size:16px;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
    .mini-stat{background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:var(--shadow-soft)}
    .mini-stat strong{display:block;font-size:20px}
    .mini-stat span{color:var(--muted);font-size:13px}
    .hero-side{display:grid;gap:14px}
    .glass-card{background:rgba(255,255,255,.82);border:1px solid rgba(220,232,213,.95);border-radius:24px;padding:18px;box-shadow:var(--shadow-soft)}
    .stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .stat{background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px}
    .stat strong{display:block;font-size:24px;color:#0f7d41}
    .stat span{display:block;color:var(--muted);font-size:13px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#284737}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
    .section-head h2{margin:0;font-size:28px;line-height:1.2}
    .section-head p{margin:0;color:var(--muted);max-width:62ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card,.info-card,.review-card,.faq-item,.article-card,.service-card,.step-card,.compare-card,.network-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-soft)}
    .card,.info-card,.review-card,.article-card,.service-card,.step-card,.compare-card,.network-card{padding:20px}
    .service-card:hover,.step-card:hover,.review-card:hover,.article-card:hover,.info-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);transition:.25s ease}
    .icon-dot{width:42px;height:42px;border-radius:14px;background:linear-gradient(135deg,#dff8e9,#fff);display:grid;place-items:center;border:1px solid var(--line);margin-bottom:12px;color:#0f7d41;font-weight:800}
    .card h3,.service-card h3,.step-card h3,.article-card h3,.review-card h3,.info-card h3{margin:0 0 10px;font-size:18px}
    .card p,.service-card p,.step-card p,.article-card p,.review-card p,.info-card p{margin:0;color:var(--muted)}
    .stats-band{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .stats-band .info-card{padding:18px 16px}
    .info-card strong{display:block;font-size:22px;color:#0e7c40}
    .info-card small{color:var(--muted)}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step-card{position:relative}
    .step-num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:999px;background:var(--brand-3);color:#14663a;font-weight:800;margin-bottom:12px}
    .compare-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:14px}
    th{background:#f2fbf4;color:#124b2d}
    tr:hover td{background:#fcfffd}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:var(--brand-3);color:#145a35;font-size:12px;font-weight:700}
    .faq{display:grid;gap:12px}
    .faq-item summary{list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;color:#163221}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item .answer{padding:0 20px 18px;color:var(--muted)}
    .review-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
    .stars{color:#f5b700;letter-spacing:1px}
    .form-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:16px;align-items:start}
    form{display:grid;gap:12px}
    input,select,textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:14px 14px;font:inherit;color:var(--text);outline:none;transition:.2s ease}
    input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(49,195,107,.12)}
    textarea{min-height:120px;resize:vertical}
    .side-panel{display:grid;gap:14px}
    .contact-card{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:center}
    .qrcode{width:110px;border-radius:16px;border:1px solid var(--line);background:#fff;padding:8px}
    .article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article-card a.more{display:inline-flex;margin-top:12px;color:#0f7d41;font-weight:700}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{color:#dff8e9;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);padding:8px 12px;border-radius:999px}
    .site-footer{background:#173b26;color:#eaf7ef;padding:32px 0 24px;margin-top:0}
    .site-footer .container{display:grid;gap:18px}
    .footer-top{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;flex-wrap:wrap}
    .footer-top p,.site-footer small{color:#cde4d4}
    .footer-nav{display:flex;flex-wrap:wrap;gap:10px}
    .footer-nav a{color:#173b26;background:#eaf7ef;padding:8px 12px;border-radius:999px}
    .float-box{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-btn{padding:12px 14px;font-size:14px;border-radius:14px}
    .to-top{background:#fff;color:#17663b;border:1px solid var(--line);box-shadow:var(--shadow-soft)}
    .mobile-links{display:none}
    .scroll-reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .scroll-reveal.in-view{opacity:1;transform:none}
    @media (max-width: 1024px){
      .hero-grid,.form-wrap,.grid-3,.grid-2,.article-list,.timeline,.stats-band{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
    }
    @media (max-width: 768px){
      .menu-btn{display:inline-flex}
      nav{display:none;width:100%;padding:10px 0 4px;border-top:1px solid var(--line);margin-top:8px}
      header.open nav{display:flex;flex-direction:column;align-items:flex-start;gap:6px}
      .navwrap{flex-wrap:wrap}
      .hero-grid,.form-wrap,.grid-3,.grid-2,.article-list,.timeline,.stats-band{grid-template-columns:1fr}
      .hero-card{padding:22px}
      section{padding:52px 0}
      .section-head h2{font-size:24px}
      .mobile-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
      .mobile-links a{padding:8px 10px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px}
      .footer-top{flex-direction:column}
    }