:root{
      --bg:#f5f8f3;
      --surface:#ffffff;
      --surface-2:#eef6ef;
      --line:#d8e5d7;
      --text:#15301f;
      --muted:#5b6c60;
      --brand:#18c964;
      --brand-2:#10b981;
      --brand-3:#65d97f;
      --accent:#0f8f4f;
      --shadow:0 18px 40px rgba(20, 88, 49, .08);
      --shadow-2:0 10px 24px rgba(20, 88, 49, .12);
      --radius:22px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      background:
        radial-gradient(circle at top left, rgba(24,201,100,.10), transparent 28%),
        radial-gradient(circle at top right, rgba(101,217,127,.12), transparent 22%),
        linear-gradient(180deg, #f7fbf5 0%, #f4f8f2 35%, #f7faf6 100%);
      color:var(--text);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky; top:0; z-index:60;
      backdrop-filter:saturate(180%) blur(14px);
      background:rgba(245,248,243,.82);
      border-bottom:1px solid rgba(216,229,215,.8);
    }
    .header-inner{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}
    .brand-text{display:flex;flex-direction:column;line-height:1.1;min-width:0}
    .brand-text strong{font-size:16px;letter-spacing:.4px}
    .brand-text span{font-size:12px;color:var(--muted)}
    .nav-toggle{display:none;border:1px solid var(--line);background:var(--surface);border-radius:14px;padding:10px 12px;color:var(--text)}
    .nav{display:flex;align-items:center;gap:18px}
    .nav a{font-size:14px;color:#284132;white-space:nowrap}
    .nav a:hover{color:var(--accent)}
    .top-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border-radius:999px;border:1px solid transparent;
      padding:12px 18px;font-weight:700;font-size:14px;
      transition:.25s ease; cursor:pointer;
      box-shadow:none;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2)); color:#fff; box-shadow:0 12px 24px rgba(24,201,100,.22)}
    .btn-primary:hover{transform:translateY(-2px); box-shadow:0 16px 28px rgba(24,201,100,.28)}
    .btn-ghost{background:rgba(255,255,255,.7); border-color:var(--line); color:var(--text)}
    .btn-ghost:hover{transform:translateY(-2px); box-shadow:var(--shadow-2)}
    .hero{padding:42px 0 24px}
    .hero-shell{
      position:relative; overflow:hidden;
      border:1px solid rgba(216,229,215,.9);
      background:
        linear-gradient(135deg, rgba(255,255,255,.92), rgba(238,246,239,.92)),
        radial-gradient(circle at 20% 20%, rgba(24,201,100,.18), transparent 26%);
      box-shadow:var(--shadow);
      border-radius:30px;
      padding:34px;
    }
    .hero-shell::before,.hero-shell::after{
      content:"";position:absolute;border-radius:999px;background:linear-gradient(135deg, rgba(24,201,100,.16), rgba(101,217,127,.03));
      filter:blur(8px);
      animation:float 9s ease-in-out infinite;
    }
    .hero-shell::before{width:220px;height:220px;right:-70px;top:-60px}
    .hero-shell::after{width:160px;height:160px;left:-40px;bottom:-30px;animation-delay:-3s}
    @keyframes float{50%{transform:translateY(-10px) translateX(8px)}}
    .hero-grid{position:relative;display:grid;grid-template-columns:1.25fr .75fr;gap:26px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#e9f8ef;color:#0f8f4f;font-size:13px;font-weight:700}
    h1{margin:16px 0 14px;font-size:clamp(32px,5vw,54px);line-height:1.08;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.75}
    .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
    .chip{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#264132;font-size:13px;box-shadow:0 8px 18px rgba(30,80,45,.04)}
    .hero-card{
      position:relative;background:rgba(255,255,255,.86);border:1px solid rgba(216,229,215,.9);
      border-radius:24px;padding:20px;box-shadow:var(--shadow-2)
    }
    .hero-card h2{margin:0 0 12px;font-size:18px}
    .hero-metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    .metric{
      padding:16px;border-radius:18px;background:linear-gradient(180deg,#ffffff,#f5fbf5);
      border:1px solid var(--line)
    }
    .metric strong{display:block;font-size:22px;color:var(--accent)}
    .metric span{display:block;margin-top:6px;color:var(--muted);font-size:13px;line-height:1.45}
    .section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px;line-height:1.1}
    .section-head p{margin:0;color:var(--muted);max-width:760px;line-height:1.7}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .card{
      background:rgba(255,255,255,.9);
      border:1px solid var(--line); border-radius:24px;
      padding:20px; box-shadow:0 10px 24px rgba(18,70,37,.05);
      transition:.25s ease;
    }
    .card:hover{transform:translateY(-4px); box-shadow:var(--shadow-2)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.72}
    .list{margin:0;padding-left:18px}
    .icon{
      width:42px;height:42px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,#e9f9ef,#dff5e4); color:#0f8f4f; margin-bottom:14px;
      font-weight:800;
    }
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:13px;color:#284132}
    .table-wrap{overflow:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:15px 14px;border-bottom:1px solid #e7efe7;text-align:left;vertical-align:top}
    th{background:#f2faf3;color:#234031;font-size:14px}
    td{color:var(--muted);font-size:14px}
    tr:hover td{background:#fbfefb}
    .timeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step{
      position:relative;padding:20px;border-radius:22px;background:linear-gradient(180deg,#fff,#f7fbf7);
      border:1px solid var(--line)
    }
    .step .num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:999px;background:var(--brand);color:#fff;font-weight:800}
    .step h3{margin:14px 0 8px}
    .split{
      display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start
    }
    .quotes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .quote{
      padding:20px;border-radius:22px;background:linear-gradient(180deg,#fff,#f7fbf7);border:1px solid var(--line)
    }
    .quote .who{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:10px}
    .stars{color:#f59e0b;letter-spacing:1px}
    details{
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:0 16px;box-shadow:0 8px 18px rgba(18,70,37,.04)
    }
    details+details{margin-top:12px}
    summary{list-style:none;cursor:pointer;padding:16px 0;font-weight:700;color:var(--text)}
    summary::-webkit-details-marker{display:none}
    details p{margin:0 0 16px;color:var(--muted);line-height:1.75}
    .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;color:#294231}
    input,select,textarea{
      width:100%;border:1px solid #cfe0cf;border-radius:16px;background:#fff;
      padding:13px 14px;font:inherit;color:var(--text);outline:none;transition:.2s ease
    }
    textarea{min-height:130px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:var(--brand);box-shadow:0 0 0 4px rgba(24,201,100,.10)}
    .footer{
      margin-top:18px;padding:24px 0 30px;background:#eaf4eb;border-top:1px solid #d8e5d7;color:#234031
    }
    .footer a{color:#0f8f4f}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .9fr;gap:18px;align-items:start}
    .footer small{color:#516356;line-height:1.8}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:70;display:flex;flex-direction:column;gap:10px
    }
    .float-btn{
      width:48px;height:48px;border-radius:16px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:var(--shadow-2);border:none;cursor:pointer
    }
    .mobile-only{display:none}
    .scroll-reveal{opacity:0;transform:translateY(16px);transition:.6s ease}
    .scroll-reveal.in-view{opacity:1;transform:translateY(0)}
    .article-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .article-list a{display:block;padding:18px;border-radius:22px;background:#fff;border:1px solid var(--line)}
    .article-list h3{margin:0 0 8px;font-size:17px}
    .article-list p{margin:0;color:var(--muted);line-height:1.7}
    .service-network{display:flex;flex-wrap:wrap;gap:10px}
    .mini-note{font-size:13px;color:var(--muted);margin-top:10px}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.timeline,.quotes,.split,.footer-grid,.article-list{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      .nav-toggle{display:inline-flex}
      .nav{display:none;position:absolute;left:16px;right:16px;top:68px;flex-direction:column;align-items:flex-start;gap:10px;padding:14px;background:rgba(255,255,255,.98);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}
      .nav.open{display:flex}
      .header-inner{position:relative}
      .top-actions .btn-ghost{display:none}
      .hero-shell{padding:24px}
      .hero-metrics{grid-template-columns:1fr 1fr}
      .form{grid-template-columns:1fr}
      .mobile-only{display:inline-flex}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container), calc(100% - 20px))}
      .hero{padding-top:20px}
      .hero-shell{border-radius:24px;padding:18px}
      h1{font-size:30px}
      .hero-metrics{grid-template-columns:1fr}
      .btn{width:100%}
      .hero-cta,.top-actions{width:100%;flex-direction:column;align-items:stretch}
      .brand-text span{display:none}
      .section-head h2{font-size:24px}
      .card,.quote,.article-list a{border-radius:18px}
    }