:root{
      --bg:#f4f8f4;
      --surface:#ffffff;
      --surface-2:#f6fff7;
      --line:#d9eadf;
      --text:#17301f;
      --muted:#567061;
      --brand:#18c65d;
      --brand-2:#0fa04a;
      --brand-3:#8df0b1;
      --accent:#0d8f46;
      --shadow:0 18px 40px rgba(18,77,41,.08);
      --shadow-soft:0 10px 24px rgba(18,77,41,.06);
      --radius:20px;
      --radius-sm:14px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Segoe UI,Roboto,Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(24,198,93,.14), transparent 28%),
        radial-gradient(circle at top right, rgba(141,240,177,.14), transparent 24%),
        linear-gradient(180deg, #fbfefb 0%, var(--bg) 100%);
      line-height:1.7;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .topbar{
      position:sticky;top:0;z-index:50;
      backdrop-filter: blur(14px);
      background:rgba(251,254,251,.82);
      border-bottom:1px solid rgba(217,234,223,.8);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:72px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .ai-page-logo{width:44px;height:44px;object-fit:contain;flex:0 0 auto}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:18px;line-height:1.1}
    .brand-text span{display:block;font-size:12px;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{color:var(--text);background:#eaf8ee}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:1px solid transparent;border-radius:999px;
      padding:12px 18px;font-weight:700;font-size:14px;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
      cursor:pointer;
    }
    .btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-soft)}
    .btn-primary{background:linear-gradient(135deg, var(--brand), var(--brand-2));color:#fff}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .menu-toggle{
      display:none;border:1px solid var(--line);background:#fff;border-radius:12px;
      width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer;
    }
    .menu-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative}
    .menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text)}
    .menu-toggle span::before{top:-6px}.menu-toggle span::after{top:6px}
    .hero{padding:34px 0 20px}
    .hero-grid{
      display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch;
    }
    .hero-panel{
      position:relative;overflow:hidden;border:1px solid rgba(24,198,93,.12);
      background:
        linear-gradient(135deg, rgba(24,198,93,.10), rgba(255,255,255,.96) 42%, rgba(141,240,177,.10)),
        #fff;
      border-radius:28px;padding:34px;box-shadow:var(--shadow);
      min-height:420px;
    }
    .hero-panel::before,.hero-panel::after{
      content:"";position:absolute;border-radius:50%;pointer-events:none;
      background:rgba(24,198,93,.10);filter:blur(2px);
    }
    .hero-panel::before{width:180px;height:180px;right:-60px;top:-40px}
    .hero-panel::after{width:120px;height:120px;left:-40px;bottom:-30px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;background:#ecfbf1;color:#0f8f48;
      font-size:13px;font-weight:700;
    }
    h1{font-size:clamp(32px, 5vw, 54px);line-height:1.08;margin:16px 0 14px;letter-spacing:-.02em}
    .hero p{margin:0;color:var(--muted);max-width:60ch;font-size:16px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:20px}
    .point{
      background:rgba(255,255,255,.82);border:1px solid var(--line);border-radius:18px;
      padding:14px 15px;box-shadow:0 8px 18px rgba(19,74,41,.04)
    }
    .point b{display:block;font-size:18px}
    .point span{display:block;font-size:12px;color:var(--muted)}
    .hero-side{
      display:grid;gap:16px;
    }
    .side-card{
      background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow-soft);
    }
    .side-card h2,.section-title h2{margin:0 0 10px;font-size:28px;line-height:1.2}
    .side-card p{margin:0;color:var(--muted)}
    .stats{
      display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:16px
    }
    .stat{
      background:linear-gradient(180deg,#f7fff8,#effaf2);border:1px solid #dfeee3;border-radius:18px;padding:15px
    }
    .stat strong{display:block;font-size:22px}
    .stat span{display:block;font-size:12px;color:var(--muted)}
    .section{padding:18px 0}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-title p{margin:0;color:var(--muted);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(--surface);border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow-soft);
      transition:transform .2s ease, box-shadow .2s ease;
    }
    .card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .card h3{margin:0 0 10px;font-size:20px}
    .card p,.card li{color:var(--muted)}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{
      padding:9px 12px;border-radius:999px;background:#edf9f0;border:1px solid #d7eadc;
      color:#16663a;font-size:13px;font-weight:600
    }
    .steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step{
      position:relative;background:linear-gradient(180deg,#fff, #f7fff8);border:1px solid var(--line);
      border-radius:24px;padding:22px 18px 18px
    }
    .step-num{
      width:40px;height:40px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-weight:800;margin-bottom:12px
    }
    .compare-wrap{overflow:auto;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:var(--shadow-soft)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 14px;border-bottom:1px solid #edf2ee;text-align:left;vertical-align:top}
    th{background:#f5fbf6;font-size:14px;color:#274232}
    td{font-size:14px;color:var(--muted)}
    tr:last-child td{border-bottom:none}
    .highlight{color:#0d7f3f;font-weight:700}
    .price-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:16px}
    .price-box{
      border-radius:24px;padding:24px;background:linear-gradient(135deg,#f1fff4,#ffffff);border:1px solid var(--line)
    }
    .price-list{display:grid;gap:12px;margin-top:16px}
    .price-item{
      display:flex;justify-content:space-between;gap:12px;padding:14px 15px;border-radius:16px;background:#fff;border:1px solid #e7efe9
    }
    .price-item b{display:block}
    .price-item span{display:block;color:var(--muted);font-size:13px}
    .form{
      display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px
    }
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1 / -1}
    label{font-size:14px;font-weight:700}
    input,select,textarea{
      width:100%;border:1px solid #cfe1d4;border-radius:14px;background:#fff;color:var(--text);
      padding:13px 14px;font:inherit;outline:none;transition:border-color .2s, box-shadow .2s
    }
    input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(24,198,93,.12)}
    textarea{min-height:120px;resize:vertical}
    .faq{display:grid;gap:12px}
    .faq-item{border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden}
    .faq-q{
      width:100%;padding:16px 18px;background:#fff;border:none;color:var(--text);
      display:flex;justify-content:space-between;align-items:center;font:inherit;font-weight:700;text-align:left;cursor:pointer
    }
    .faq-a{display:none;padding:0 18px 16px;color:var(--muted)}
    .faq-item.open .faq-a{display:block}
    .faq-item.open .faq-q{background:#f5fbf6}
    .comment-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .comment .meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
    .stars{color:#12a94f;letter-spacing:1px}
    .timeline{display:grid;gap:12px}
    .timeline-item{
      display:grid;grid-template-columns:92px 1fr;gap:14px;align-items:start;
      padding:16px 18px;border-radius:18px;background:#fff;border:1px solid var(--line)
    }
    .timeline-item b{color:var(--accent)}
    .article-list{display:grid;gap:12px}
    .article{
      display:flex;justify-content:space-between;gap:16px;align-items:center;padding:16px 18px;border-radius:18px;
      background:#fff;border:1px solid var(--line)
    }
    .article small{color:var(--muted)}
    .article a{color:#0d8f46;font-weight:700}
    .gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .gallery .card{padding:14px}
    .gallery .ai-page-image{width:100%;height:auto;border-radius:16px;object-fit:cover;border:1px solid #edf2ee}
    .qr-wrap{display:grid;grid-template-columns:220px 1fr;gap:18px;align-items:center}
    .qr{
      width:220px;max-width:100%;border-radius:20px;border:1px solid var(--line);background:#fff;padding:12px
    }
    .footer{
      margin-top:24px;padding:22px 0 28px;border-top:1px solid #dbe8de;background:#f7fbf8;color:#264131
    }
    .footer a{color:#0d7f3f}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:start}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid #dfeee3}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .floating a,.floating button{
      width:52px;height:52px;border-radius:16px;border:none;display:flex;align-items:center;justify-content:center;
      box-shadow:var(--shadow);background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;cursor:pointer
    }
    .floating .up{background:#fff;color:var(--text);border:1px solid var(--line)}
    .mobile-panel{display:none}
    .reveal{opacity:0;transform:translateY(14px);transition:.6s ease}
    .reveal.in{opacity:1;transform:none}
    .mini{font-size:13px;color:var(--muted)}
    .divider{height:1px;background:#e2eee5;margin:18px 0}
    @media (max-width: 1024px){
      .hero-grid,.grid-3,.steps,.comment-grid,.gallery,.price-grid,.footer-grid{grid-template-columns:1fr}
      .hero-panel{min-height:auto}
      .timeline-item{grid-template-columns:1fr}
    }
    @media (max-width: 860px){
      .nav-links,.nav-cta{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-panel{display:none;border-top:1px solid var(--line);padding:12px 0 16px}
      .mobile-panel.show{display:block}
      .mobile-panel .nav-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
      .mobile-panel .nav-links a{background:#fff;border:1px solid var(--line);text-align:center}
      .mobile-panel .nav-cta{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
      .hero{padding-top:24px}
      .hero-panel{padding:24px}
      .hero-points{grid-template-columns:1fr}
      .stats,.form{grid-template-columns:1fr}
      .qr-wrap{grid-template-columns:1fr}
      .qr{width:180px}
      .section-title{flex-direction:column;align-items:start}
    }