:root{
      --bg:#f6f8fc;
      --panel:#ffffff;
      --panel-2:#f4f7ff;
      --text:#1c2330;
      --muted:#5b6475;
      --line:#dde4f0;
      --primary:#2f66ff;
      --primary-2:#7c4dff;
      --accent:#15b8a6;
      --warm:#ff8b4d;
      --shadow:0 18px 40px rgba(33,52,99,.10);
      --shadow-soft:0 10px 24px rgba(33,52,99,.08);
      --radius:20px;
      --radius-sm:14px;
      --max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:Inter,system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:
      radial-gradient(circle at top left, rgba(47,102,255,.10), transparent 24%),
      radial-gradient(circle at 88% 8%, rgba(21,184,166,.10), transparent 20%),
      linear-gradient(180deg,#f8fbff 0%,#f6f8fc 38%,#f6f8fc 100%);
      color:var(--text);line-height:1.6}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(100% - 32px, var(--max));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(246,248,252,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(221,228,240,.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 img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:var(--shadow-soft)}
    .brand .meta{min-width:0}
    .brand strong{display:block;font-size:16px;line-height:1.1}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:var(--text)}
    .nav-links{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:13px;color:#334155;padding:8px 10px;border-radius:999px}
    .nav-links a:hover{background:#edf3ff;color:#214bd9}
    .home-btn{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff !important;padding:10px 14px !important;box-shadow:0 12px 24px rgba(47,102,255,.22)}
    .hero{padding:42px 0 28px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:stretch}
    .hero-copy{position:relative;overflow:hidden;background:linear-gradient(135deg,#ffffff 0%,#f5f8ff 55%,#eef7ff 100%);border:1px solid rgba(221,228,240,.9);border-radius:28px;padding:32px;box-shadow:var(--shadow)}
    .hero-copy::after{content:"";position:absolute;inset:auto -30px -30px auto;width:180px;height:180px;background:radial-gradient(circle, rgba(47,102,255,.18), transparent 68%);pointer-events:none}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#edf4ff;color:#1f4ed8;border:1px solid #d8e5ff;padding:8px 12px;border-radius:999px;font-size:13px;font-weight:600}
    h1{margin:14px 0 12px;font-size:clamp(30px,4vw,52px);line-height:1.08;letter-spacing:-.03em}
    .lead{font-size:16px;color:var(--muted);max-width:62ch;margin:0 0 18px}
    .cta-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:14px;padding:13px 16px;font-weight:700;transition:.22s ease;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;box-shadow:0 14px 28px rgba(47,102,255,.24)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px)}
    .hero-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:22px}
    .stat{background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:var(--shadow-soft)}
    .stat strong{display:block;font-size:28px;line-height:1;color:#102a56}
    .stat span{display:block;color:var(--muted);font-size:13px;margin-top:8px}
    .hero-side{display:grid;gap:14px}
    .hero-card{background:linear-gradient(180deg,#ffffff 0%,#f7faff 100%);border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow-soft)}
    .hero-card h2{margin:0 0 10px;font-size:18px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#f2f6ff;border:1px solid #dfe7fb;color:#28457d;font-size:13px}
    section{padding:16px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px;line-height:1.15}
    .section-head 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(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-soft);transition:transform .22s ease, box-shadow .22s ease}
    .card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted)}
    .icon-badge{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(47,102,255,.12),rgba(124,77,255,.12));color:#2244c7;font-weight:800;margin-bottom:12px}
    .pill-list{display:flex;flex-wrap:wrap;gap:10px}
    .pill-list span{background:#f3f6ff;border:1px solid #dbe4fb;border-radius:999px;padding:8px 11px;font-size:13px;color:#2f4c86}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
    .steps{display:grid;gap:12px}
    .step{display:flex;gap:14px;padding:16px;border:1px solid var(--line);border-radius:18px;background:#fff}
    .step b{min-width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:#ecf3ff;color:#204ed5}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow-soft)}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:14px 16px;border-bottom:1px solid #edf1f7;text-align:left;vertical-align:top}
    th{background:#f7faff;color:#132b54;font-size:14px}
    td{color:var(--muted);font-size:14px}
    .highlight{color:#0e4bd9;font-weight:700}
    .compare-hero{background:linear-gradient(135deg,#f8fbff 0%,#eef7ff 100%)}
    .score{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:center}
    .score .big{font-size:44px;line-height:1;color:#1846cb;font-weight:900}
    .rating{font-size:14px;color:#5b6475}
    .stars{color:#ffb300;font-size:18px;letter-spacing:1px}
    details{border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--shadow-soft);overflow:hidden}
    details+details{margin-top:12px}
    summary{list-style:none;cursor:pointer;padding:16px 18px;font-weight:700;display:flex;justify-content:space-between;gap:12px}
    summary::-webkit-details-marker{display:none}
    details p{margin:0;padding:0 18px 16px;color:var(--muted)}
    .reviews{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .review .role{font-size:13px;color:#2563eb;font-weight:700;margin-bottom:8px}
    .review .quote{margin:0;color:#425166}
    .articles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .article-item{display:flex;gap:14px;padding:16px;border-bottom:1px solid #edf1f7}
    .article-item:last-child{border-bottom:0}
    .article-item .dot{width:10px;height:10px;border-radius:999px;background:linear-gradient(135deg,var(--primary),var(--accent));margin-top:8px;flex:0 0 auto}
    .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:#25324a}
    input,select,textarea{width:100%;border:1px solid #d8e1ef;border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text);outline:none}
    input:focus,select:focus,textarea:focus{border-color:#7aa0ff;box-shadow:0 0 0 4px rgba(47,102,255,.10)}
    textarea{min-height:130px;resize:vertical}
    .submit-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:4px}
    .footer{padding:20px 0 26px;border-top:1px solid rgba(221,228,240,.9);margin-top:10px;background:linear-gradient(180deg,rgba(255,255,255,.55),rgba(255,255,255,.88))}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:16px}
    .footer h3{margin:0 0 10px;font-size:18px}
    .footer p,.footer a,.footer li{color:#4b5568;font-size:14px}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:7px 10px;border:1px solid #dbe4f2;border-radius:999px;background:#fff}
    .fine{margin-top:14px;padding-top:14px;border-top:1px solid #e8edf5;color:#647084;font-size:13px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:flex;flex-direction:column;gap:10px}
    .float-btn{width:48px;height:48px;border-radius:999px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;box-shadow:0 14px 30px rgba(47,102,255,.22);border:0;cursor:pointer}
    .kf-panel{position:fixed;right:16px;bottom:78px;width:min(320px,calc(100vw - 32px));background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:14px;display:none;z-index:61}
    .kf-panel.show{display:block}
    .kf-panel .row{display:flex;gap:12px;align-items:center}
    .kf-panel img{width:88px;height:88px;object-fit:cover;border-radius:14px;border:1px solid #e6ecf6;background:#f8fbff}
    .kf-panel h4{margin:0 0 6px;font-size:16px}
    .kf-panel p{margin:0;color:var(--muted);font-size:13px}
    .reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease, transform .55s ease}
    .reveal.in{opacity:1;transform:none}
    .service-line{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
    .mini{padding:14px;border:1px solid var(--line);border-radius:16px;background:#fff}
    .mini strong{display:block;color:#16335e}
    .mini span{display:block;color:var(--muted);font-size:13px;margin-top:4px}
    .timeline{display:grid;gap:12px}
    .time-item{display:grid;grid-template-columns:110px 1fr;gap:14px;align-items:start;padding:14px 16px;background:#fff;border:1px solid var(--line);border-radius:16px}
    .time-item b{color:#1f4ed8}
    .two-col{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
    @media (max-width: 960px){
      .hero-grid,.grid-3,.reviews,.footer-grid,.split,.two-col,.articles,.service-line{grid-template-columns:1fr}
      .hero-stats,.grid-2{grid-template-columns:1fr 1fr}
      .nav-toggle{display:inline-flex}
      .nav-links{display:none;width:100%;padding:10px 0 6px}
      .nav-links.open{display:flex}
      .nav{flex-wrap:wrap}
      .form{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:start}
      .time-item{grid-template-columns:1fr}
    }
    @media (max-width: 640px){
      .hero{padding-top:22px}
      .hero-copy{padding:22px}
      .hero-stats,.grid-2{grid-template-columns:1fr}
      h1{font-size:32px}
      .stat strong{font-size:24px}
      .container{width:min(100% - 22px, var(--max))}
      .nav-links a{padding:7px 10px}
    }