:root{
      --bg:#f4f8f4;
      --bg2:#eef7ee;
      --card:#ffffff;
      --text:#16301f;
      --muted:#587061;
      --line:#dce8dd;
      --green:#1bb35e;
      --green2:#14a34f;
      --accent:#46d36e;
      --shadow:0 12px 30px rgba(21,71,40,.08);
      --shadow2:0 18px 40px rgba(21,71,40,.12);
      --radius:20px;
      --max:1200px;
    }
    *{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",sans-serif;color:var(--text);background:
      radial-gradient(circle at top left, rgba(27,179,94,.12), transparent 28%),
      radial-gradient(circle at top right, rgba(70,211,110,.10), transparent 24%),
      linear-gradient(180deg,#f8fbf8 0%, var(--bg) 36%, #f7faf7 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max), calc(100% - 32px)); margin:0 auto}
    header{position:sticky;top:0;z-index:40;background:rgba(247,250,247,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(220,232,221,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .ai-page-logo{width:42px;height:42px;object-fit:contain;border-radius:10px;background:#fff;border:1px solid var(--line);padding:4px;box-shadow:var(--shadow)}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:4px}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:var(--text);font-weight:700}
    nav ul{display:flex;flex-wrap:wrap;gap:6px 14px;list-style:none;margin:0;padding:0;align-items:center;justify-content:flex-end}
    nav a{font-size:14px;color:#274032;padding:8px 10px;border-radius:999px;transition:.2s}
    nav a:hover{background:#e7f7ea;color:#0f7e38}
    .topbar-cta{display:flex;gap:10px;align-items:center}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:14px;padding:12px 18px;font-weight:800;border:1px solid transparent;transition:.22s;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--green),var(--green2));color:#fff;box-shadow:0 12px 28px rgba(27,179,94,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(27,179,94,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .hero{padding:34px 0 10px}
    .hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:20px;align-items:stretch}
    .hero-main{padding:34px;border-radius:28px;background:
      linear-gradient(135deg, rgba(27,179,94,.12), rgba(255,255,255,.92) 34%, rgba(255,255,255,.92)),
      radial-gradient(circle at top right, rgba(70,211,110,.16), transparent 20%);
      border:1px solid rgba(220,232,221,.9);box-shadow:var(--shadow);position:relative;overflow:hidden}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eaffef;color:#0e8b41;font-size:13px;font-weight:800;border:1px solid #c7efd2}
    h1{margin:16px 0 12px;font-size:clamp(30px,5vw,52px);line-height:1.06;letter-spacing:-.02em}
    .lead{font-size:16px;line-height:1.8;color:var(--muted);max-width:62ch;margin:0}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
    .hero-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}
    .stat{background:rgba(255,255,255,.88);border:1px solid var(--line);border-radius:18px;padding:16px;box-shadow:var(--shadow)}
    .stat b{display:block;font-size:24px;color:#0d6f35}
    .stat span{display:block;color:var(--muted);font-size:13px;margin-top:6px;line-height:1.5}
    .hero-side{display:grid;gap:14px}
    .side-card{background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow)}
    .side-card h3{margin:0 0 10px;font-size:18px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 10px;border-radius:999px;background:#effaf1;border:1px solid #d3edd8;color:#1f5531;font-size:13px}
    .section{padding:22px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:26px}
    .section-head p{margin:0;color:var(--muted);line-height:1.7;max-width:70ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow);transition:.22s}
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow2)}
    .card h3,.card h4{margin:0 0 10px}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .list{margin:0;padding-left:18px}
    .pill{display:inline-flex;padding:6px 10px;border-radius:999px;background:#edf9f0;color:#167a3b;font-weight:700;font-size:12px;margin-bottom:12px}
    .timeline{display:grid;gap:14px}
    .step{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start}
    .step-num{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--green),var(--accent));color:#fff;display:grid;place-items:center;font-weight:900}
    table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border-radius:18px;border:1px solid var(--line);background:#fff}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:14px}
    th{background:#effaf1;color:#204431}
    tr:last-child td{border-bottom:none}
    .scroll-x{overflow:auto}
    .faq details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px;box-shadow:var(--shadow)}
    .faq details+details{margin-top:12px}
    .faq summary{cursor:pointer;font-weight:800;list-style:none}
    .faq summary::-webkit-details-marker{display:none}
    .faq .answer{padding-top:10px;color:var(--muted);line-height:1.8}
    .reviews .review{display:flex;flex-direction:column;gap:10px}
    .review .meta{display:flex;justify-content:space-between;gap:12px;align-items:center;color:var(--muted);font-size:13px}
    .stars{color:#f0b400;font-size:16px;letter-spacing:1px}
    .articles a{display:block;padding:14px 0;border-bottom:1px dashed var(--line);color:#1c3a28}
    .articles a:last-child{border-bottom:none}
    .form-wrap{display:grid;grid-template-columns:1fr .78fr;gap:16px;align-items:start}
    form{display:grid;gap:12px}
    label{font-size:14px;font-weight:700;color:#264231}
    input,select,textarea{width:100%;padding:13px 14px;border:1px solid #cfe0d1;border-radius:14px;background:#fff;color:var(--text);outline:none;transition:.2s;font:inherit}
    input:focus,select:focus,textarea:focus{border-color:#7fd89b;box-shadow:0 0 0 4px rgba(27,179,94,.08)}
    textarea{min-height:118px;resize:vertical}
    .footer{margin-top:10px;padding:28px 0 26px;background:#edf6ee;border-top:1px solid #d8e8db;color:#214232}
    .footer a{color:#156e37}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:start}
    .footer small{color:#587061}
    .float-tools{position:fixed;right:16px;bottom:16px;z-index:50;display:grid;gap:10px}
    .float-tools a,.float-tools button{width:46px;height:46px;border-radius:16px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);display:grid;place-items:center;color:#17753a;font-weight:900;cursor:pointer}
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}
    .hero-line{position:absolute;inset:auto -18% -30% auto;width:240px;height:240px;border-radius:50%;background:radial-gradient(circle, rgba(27,179,94,.16), transparent 64%);filter:blur(2px);pointer-events:none}
    .service-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .service-grid .card{padding:18px}
    .note{font-size:13px;color:var(--muted);line-height:1.7}
    .mini{font-size:13px;color:var(--muted)}
    .contact-line{display:grid;gap:10px}
    .qrcode{width:140px;border-radius:16px;border:1px solid var(--line)}
    .mobile-only{display:none}
    @media (max-width: 1024px){
      .hero-grid,.form-wrap,.footer-grid,.grid-3,.grid-2,.service-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 860px){
      nav{display:none}
      nav.open{display:block;position:absolute;left:0;right:0;top:100%;background:#f8fbf8;border-bottom:1px solid var(--line);padding:10px 16px}
      nav ul{justify-content:flex-start}
      .menu-btn{display:inline-flex}
      .topbar-cta{display:none}
      .hero-grid,.form-wrap,.footer-grid,.grid-3,.grid-2,.service-grid{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .hero-stats{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      .mobile-only{display:block}
    }