:root{
      --bg:#f7f8fc;
      --panel:#ffffff;
      --panel-2:#f2f6ff;
      --line:#dce3f1;
      --text:#142033;
      --muted:#5f6b85;
      --brand:#2563eb;
      --brand-2:#22c55e;
      --accent:#ffb703;
      --shadow:0 18px 45px rgba(27, 54, 100, .10);
      --radius:20px;
      --radius-sm:14px;
      --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(37,99,235,.10), transparent 30%),
      radial-gradient(circle at top right, rgba(34,197,94,.10), transparent 26%),
      linear-gradient(180deg, #fbfcff 0%, #f6f8fd 100%);
      color:var(--text);line-height:1.6}
    img{display:block;max-width:100%}
    a{color:inherit;text-decoration:none}
    .container{max-width:var(--container);margin:0 auto;padding:0 20px}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(247,248,252,.88);backdrop-filter:saturate(180%) blur(16px);border-bottom:1px solid rgba(220,227,241,.75)}
    .nav{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 img{width:44px;height:44px;object-fit:contain}
    .brand strong{display:block;font-size:18px;line-height:1.1}
    .brand 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:focus{color:var(--text);background:#eef4ff}
    .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;cursor:pointer;transition:.2s;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--brand),#3b82f6);color:#fff;box-shadow:0 12px 24px rgba(37,99,235,.22)}
    .btn-primary:hover{transform:translateY(-1px);box-shadow:0 16px 28px rgba(37,99,235,.28)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .menu-toggle{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    .hero{padding:34px 0 22px}
    .hero-grid{display:grid;grid-template-columns:1.3fr .9fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.card,.section-card,.faq-item,.review,.article,.step,.compare,.form-card,.price-card,.timeline,.quote{background:var(--panel);border:1px solid rgba(220,227,241,.85);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:34px;position:relative;overflow:hidden}
    .hero-main::before{content:"";position:absolute;inset:auto -80px -100px auto;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle, rgba(37,99,235,.16), transparent 66%);pointer-events:none}
    .pill{display:inline-flex;align-items:center;gap:8px;background:#eef6ff;color:#1d4ed8;border:1px solid #dbeafe;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:700}
    h1{margin:14px 0 12px;font-size:clamp(32px,5vw,52px);line-height:1.08;letter-spacing:-.03em}
    .lead{font-size:17px;color:var(--muted);max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .metric{background:linear-gradient(180deg,#fff, #f7faff);border:1px solid #e5ebf7;border-radius:18px;padding:16px}
    .metric b{display:block;font-size:24px;margin-bottom:6px}
    .metric span{font-size:13px;color:var(--muted)}
    .hero-side{padding:24px;background:linear-gradient(180deg,#fff 0%,#f7fbff 100%)}
    .side-box{padding:18px;border-radius:18px;background:linear-gradient(135deg,#eff6ff,#f9fbff);border:1px solid #dbeafe;margin-bottom:14px}
    .side-box h3{margin:0 0 8px;font-size:18px}
    .side-box p,.small{margin:0;color:var(--muted);font-size:14px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .tag{padding:8px 12px;border-radius:999px;background:#f3f7ff;border:1px solid #dde6f8;font-size:13px;color:#30415f}
    .section{padding:18px 0 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:14px;margin:0 0 14px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:70ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .card{padding:20px}
    .card h3{margin:10px 0 8px;font-size:18px}
    .icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,#dbeafe,#eefbf3);color:#1d4ed8;font-weight:900}
    .section-card{padding:24px}
    .flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .step{padding:18px}
    .step .num{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:#eff6ff;color:#1d4ed8;font-weight:800;margin-bottom:12px}
    table{width:100%;border-collapse:separate;border-spacing:0}
    .table-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff}
    th,td{padding:14px 16px;border-bottom:1px solid #edf2fb;text-align:left;vertical-align:top;font-size:14px}
    th{background:#f7faff;color:#274060}
    tr:last-child td{border-bottom:none}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:999px;background:#eff6ff;color:#1e40af;font-size:12px;font-weight:700}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .compare .score{font-size:40px;font-weight:900;color:#0f172a}
    .compare .stars{color:#f59e0b;font-size:18px;letter-spacing:2px}
    .reviews,.articles,.faq-list,.timeline-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review p{margin:10px 0 0;color:var(--muted)}
    .review .who{margin-top:14px;font-weight:700}
    .article a{color:var(--brand);font-weight:700}
    .article p{color:var(--muted)}
    details{border-radius:16px;background:#fff;border:1px solid var(--line);padding:0 16px;box-shadow:0 10px 24px rgba(17,24,39,.04)}
    summary{list-style:none;cursor:pointer;padding:16px 0;font-weight:700}
    summary::-webkit-details-marker{display:none}
    details p{margin:0 0 16px;color:var(--muted)}
    .form-card{padding:24px}
    .form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    label{font-size:14px;font-weight:700}
    input,select,textarea{width:100%;border:1px solid #d8e1f0;border-radius:14px;padding:13px 14px;background:#fff;color:var(--text);font:inherit;outline:none;transition:.2s}
    input:focus,select:focus,textarea:focus{border-color:#7fb0ff;box-shadow:0 0 0 4px rgba(37,99,235,.08)}
    textarea{min-height:120px;resize:vertical}
    .full{grid-column:1/-1}
    .footer{margin-top:22px;padding:26px 0 24px;background:#eef4ff;border-top:1px solid #dbe5f5;color:#20314d}
    .footer a{color:#1d4ed8}
    .footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:16px;align-items:start}
    .footer small{color:#526178}
    .float-tools{position:fixed;right:18px;bottom:18px;z-index:60;display:flex;flex-direction:column;gap:10px}
    .float-tools a,.float-tools button{width:48px;height:48px;border-radius:16px;border:none;box-shadow:0 14px 30px rgba(16,24,40,.15);background:#fff;display:grid;place-items:center;color:#1d4ed8;cursor:pointer}
    .qr img{width:120px;border-radius:16px;border:1px solid var(--line)}
    .reveal{opacity:0;transform:translateY(16px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}
    .mini-list{display:grid;gap:10px}
    .mini-list div{padding:12px 14px;border-radius:14px;background:#f8fbff;border:1px solid #e3ebf8;color:#334155}
    .two-col{display:grid;grid-template-columns:1.1fr .9fr;gap:16px}
    .service-map{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .service-map div{padding:14px;border-radius:14px;background:#f7faff;border:1px solid #e0e9f7}
    .article-list{display:grid;gap:12px}
    .article-list a{display:flex;justify-content:space-between;gap:10px;padding:14px 16px;border-radius:14px;background:#f7faff;border:1px solid #e0e9f7}
    .mobile-only{display:none}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.flow,.reviews,.articles,.faq-list,.timeline-list,.footer-grid,.split,.two-col{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-toggle{display:inline-grid}
      .nav-links.open{display:flex;position:absolute;left:20px;right:20px;top:72px;background:#fff;padding:14px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start}
      .hero-metrics,.form-grid{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      .mobile-only{display:block}
    }