:root{
      --bg:#f4f7f0;
      --bg-soft:#eef4e8;
      --card:#ffffff;
      --card-2:#f9fbf6;
      --line:#d9e5d0;
      --text:#17301f;
      --muted:#5d6d61;
      --green:#23c55e;
      --green-2:#12a84d;
      --green-deep:#0d7f39;
      --accent:#dff7e7;
      --shadow:0 18px 50px rgba(22, 56, 34, .08);
      --radius:22px;
      --radius-sm:16px;
      --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",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(35,197,94,.11), transparent 30%),
        radial-gradient(circle at top right, rgba(18,168,77,.08), transparent 24%),
        linear-gradient(180deg, #f8fbf6 0%, var(--bg) 100%);
      line-height:1.7;
      overflow-x:hidden;
    }
    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:50;
      backdrop-filter:blur(14px);
      background:rgba(247,250,244,.82);
      border-bottom:1px solid rgba(217,229,208,.85);
    }
    .topbar{
      display:flex;align-items:center;justify-content:space-between;gap:18px;
      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:12px;background:#fff;border:1px solid var(--line);padding:4px;
      box-shadow:0 10px 24px rgba(19, 74, 39, .08);
    }
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:17px;letter-spacing:.4px}
    .brand-text span{display:block;font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    nav a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.2s ease}
    nav a:hover{color:var(--text);background:var(--accent)}
    .nav-actions{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;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
      cursor:pointer;white-space:nowrap;
    }
    .btn:hover{transform:translateY(-1px);box-shadow:0 14px 30px rgba(20,80,40,.12)}
    .btn-primary{background:linear-gradient(135deg,var(--green),var(--green-2));color:#fff}
    .btn-primary:hover{background:linear-gradient(135deg,#1dcf62,#109846)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .menu-toggle{display:none}
    .hero{
      position:relative;
      padding:36px 0 20px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:stretch;
    }
    .hero-card,.panel,.feature-card,.review-card,.faq-item,.article-item,.timeline-item,.service-card,.case-card,.compare-card,.price-card,.tag-cloud,.contact-card,.network-card{
      background:rgba(255,255,255,.88);
      border:1px solid rgba(217,229,208,.92);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
    }
    .hero-card{
      padding:30px;
      position:relative;overflow:hidden;
      min-height:100%;
    }
    .hero-card::before{
      content:"";position:absolute;inset:auto -60px -90px auto;width:220px;height:220px;border-radius:50%;
      background:radial-gradient(circle, rgba(35,197,94,.16), transparent 66%);
      pointer-events:none;
    }
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;
      background:var(--accent);color:var(--green-deep);font-weight:700;font-size:13px;
      margin-bottom:14px;
    }
    h1{margin:0 0 14px;font-size:clamp(30px,4vw,52px);line-height:1.12;letter-spacing:-.8px}
    .lead{margin:0 0 20px;color:var(--muted);font-size:16px;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 18px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
    .mini{
      background:linear-gradient(180deg,#fff,#f7fbf4);
      border:1px solid var(--line);border-radius:18px;padding:14px 14px 12px;
    }
    .mini b{display:block;font-size:18px;margin-bottom:2px}
    .mini span{font-size:13px;color:var(--muted)}
    .hero-side{display:grid;gap:16px}
    .panel{padding:22px}
    .panel h2,.section-title h2{margin:0 0 10px;font-size:clamp(24px,3vw,34px);line-height:1.16}
    .panel p,.section-title p{margin:0;color:var(--muted)}
    .data-grid,.service-grid,.review-grid,.case-grid,.article-grid,.compare-grid,.faq-grid,.benefit-grid,.match-grid,.network-grid,.contact-grid{display:grid;gap:16px}
    .data-grid{grid-template-columns:repeat(4,1fr);margin-top:18px}
    .stat{
      padding:18px;border-radius:20px;background:linear-gradient(180deg,#fff,#f6fbf3);
      border:1px solid var(--line)
    }
    .stat .num{font-size:28px;font-weight:800;color:var(--green-deep);line-height:1}
    .stat .label{display:block;margin-top:8px;font-size:13px;color:var(--muted)}
    section{padding:24px 0}
    .section-title{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-title .sub{max-width:62ch}
    .service-grid,.benefit-grid{grid-template-columns:repeat(3,1fr)}
    .feature-card,.service-card,.case-card,.compare-card,.price-card,.review-card,.timeline-item,.article-item,.faq-item,.contact-card,.network-card{padding:20px}
    .feature-card h3,.service-card h3,.case-card h3,.compare-card h3,.price-card h3,.review-card h3,.timeline-item h3,.article-item h3,.contact-card h3,.network-card h3{margin:0 0 8px;font-size:18px}
    .feature-card p,.service-card p,.case-card p,.compare-card p,.price-card p,.review-card p,.timeline-item p,.article-item p,.contact-card p,.network-card p{margin:0;color:var(--muted)}
    .icon{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;margin-bottom:14px;
      background:linear-gradient(135deg,rgba(35,197,94,.14),rgba(18,168,77,.08));color:var(--green-deep);
      font-size:20px;font-weight:800;
    }
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tags span,.tag-cloud a{
      display:inline-flex;align-items:center;
      padding:8px 12px;border-radius:999px;background:#f5faf2;border:1px solid var(--line);
      color:#284334;font-size:13px
    }
    .tag-cloud{padding:20px;display:flex;flex-wrap:wrap;gap:10px}
    .timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .timeline-item{position:relative}
    .timeline-item .step{
      display:inline-flex;align-items:center;justify-content:center;
      width:34px;height:34px;border-radius:50%;background:var(--green);color:#fff;font-weight:800;margin-bottom:10px
    }
    .compare-box{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:820px}
    th,td{padding:14px 16px;text-align:left;border-bottom:1px solid #e7efe2;vertical-align:top}
    th{background:#f5faf2;color:var(--green-deep);font-size:14px}
    td{font-size:14px;color:var(--text)}
    .rating{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:10px 0 16px
    }
    .stars{color:#18a34a;font-size:22px;letter-spacing:2px}
    .badge{
      display:inline-flex;align-items:center;gap:6px;
      padding:6px 10px;border-radius:999px;background:var(--accent);color:var(--green-deep);font-size:12px;font-weight:700
    }
    .review-grid,.case-grid,.article-grid{grid-template-columns:repeat(3,1fr)}
    .quote{font-size:15px;color:var(--text)}
    .author{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px;padding-top:12px;border-top:1px dashed #dbe5d4}
    .author strong{display:block}
    .author span{font-size:13px;color:var(--muted)}
    .split{
      display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start
    }
    .list{display:grid;gap:10px;margin:0;padding:0;list-style:none}
    .list li{display:flex;gap:10px;align-items:flex-start;color:var(--text)}
    .list li::before{content:"✓";color:var(--green-deep);font-weight:900;flex:0 0 auto}
    .price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price-card{position:relative}
    .price{
      font-size:30px;font-weight:900;color:var(--green-deep);line-height:1.1;margin:8px 0 10px
    }
    .price small{font-size:14px;color:var(--muted);font-weight:600}
    .faq-grid{grid-template-columns:1fr;gap:12px}
    .faq-item summary{
      list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;font-weight:700
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary span{color:var(--green-deep)}
    .faq-item .answer{padding-top:12px;color:var(--muted)}
    .faq-item[open]{border-color:#bfe5c8;box-shadow:0 14px 36px rgba(20,80,40,.08)}
    .contact-grid{grid-template-columns:1fr 1fr;align-items:start}
    .form{
      display:grid;grid-template-columns:1fr 1fr;gap:14px
    }
    .field{display:grid;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:14px;font-weight:700}
    input,select,textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--text);
      padding:13px 14px;font:inherit;outline:none;transition:border-color .2s ease, box-shadow .2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#8ad9a6;box-shadow:0 0 0 4px rgba(35,197,94,.12)}
    textarea{min-height:124px;resize:vertical}
    .helper{font-size:13px;color:var(--muted)}
    .contact-card .qrcode{
      display:grid;grid-template-columns:120px 1fr;gap:16px;align-items:center
    }
    .contact-card .qrcode img{
      width:120px;aspect-ratio:1/1;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#fff;padding:6px
    }
    .footer{
      margin-top:24px;
      padding:24px 0 30px;
      border-top:1px solid rgba(217,229,208,.9);
      background:linear-gradient(180deg, rgba(248,251,246,.5), rgba(242,247,237,.95));
      color:var(--text);
    }
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:16px}
    .footer a{color:var(--green-deep)}
    .footer small{color:var(--muted)}
    .home-link{font-weight:800;color:var(--green-deep)}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:60;
      display:grid;gap:10px
    }
    .floating a,.floating button{
      width:48px;height:48px;border-radius:16px;border:1px solid var(--line);background:#fff;color:var(--green-deep);
      display:grid;place-items:center;box-shadow:0 12px 28px rgba(18,84,39,.12);cursor:pointer
    }
    .mobile-only{display:none}
    .scroll-top{opacity:0;pointer-events:none;transform:translateY(6px);transition:.2s ease}
    .scroll-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
    .reveal{opacity:0;transform:translateY(20px);transition:.6s ease}
    .reveal.in{opacity:1;transform:translateY(0)}
    @media (max-width: 1024px){
      .hero-grid,.contact-grid,.split,.footer-grid,.data-grid,.service-grid,.benefit-grid,.review-grid,.case-grid,.article-grid,.price-grid,.timeline{grid-template-columns:1fr 1fr}
    }
    @media (max-width: 760px){
      header{position:sticky}
      .topbar{flex-wrap:wrap}
      nav{display:none;width:100%;padding:10px 0 0;gap:8px;justify-content:flex-start}
      nav.open{display:flex;flex-direction:column;align-items:flex-start}
      nav a{padding:10px 12px;background:#fff;border:1px solid var(--line)}
      .menu-toggle{display:inline-flex}
      .hero{padding-top:24px}
      .hero-grid,.contact-grid,.split,.footer-grid,.data-grid,.service-grid,.benefit-grid,.review-grid,.case-grid,.article-grid,.price-grid,.timeline{grid-template-columns:1fr}
      .hero-card{padding:22px}
      .hero-points{grid-template-columns:1fr}
      .form{grid-template-columns:1fr}
      .mobile-only{display:inline-flex}
      .section-title{flex-direction:column;align-items:flex-start}
      .contact-card .qrcode{grid-template-columns:1fr}
      .contact-card .qrcode img{width:100%;max-width:220px}
      .floating{right:12px;bottom:12px}
    }
    .subtle-line{
      height:1px;background:linear-gradient(90deg,transparent,rgba(35,197,94,.28),transparent);margin:16px 0
    }