:root{
      --bg:#f5f7fb;
      --bg2:#eef3ff;
      --card:#ffffff;
      --text:#13213c;
      --muted:#5a6782;
      --line:#dce4f2;
      --primary:#5b63ff;
      --primary2:#2dc7c9;
      --accent:#ff8a5b;
      --shadow:0 18px 50px rgba(21, 38, 92, .09);
      --radius:20px;
      --container: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",Arial,sans-serif;background:
      radial-gradient(circle at top left, rgba(91,99,255,.12), transparent 24%),
      radial-gradient(circle at top right, rgba(45,199,201,.14), transparent 20%),
      linear-gradient(180deg, #fbfcff 0%, var(--bg) 36%, #f8fafc 100%);
      color:var(--text);line-height:1.7}
    a{color:var(--primary);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:saturate(150%) blur(12px);background:rgba(251,252,255,.82);border-bottom:1px solid rgba(220,228,242,.8)}
    .nav{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:74px}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain}
    .brand strong{display:block;font-size:18px;letter-spacing:.4px}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .nav-links{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:14px}
    .nav-links a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:999px;transition:.25s}
    .nav-links a:hover{background:#edf2ff;color:var(--primary)}
    .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:.25s;white-space:nowrap}
    .btn-primary{background:linear-gradient(135deg,var(--primary),#7f5bff);color:#fff;box-shadow:0 10px 24px rgba(91,99,255,.22)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-1px);box-shadow:0 14px 28px rgba(16,24,40,.12)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:14px;padding:10px 12px}
    .hero{padding:34px 0 20px}
    .hero-shell{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.panel,.card,.quote,.faq-item,.article-item,.review,.timeline li,.price-card,.form-card,.table-card{background:rgba(255,255,255,.92);border:1px solid rgba(220,228,242,.92);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-main{padding:30px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{content:"";position:absolute;border-radius:50%;pointer-events:none}
    .hero-main:before{width:220px;height:220px;background:radial-gradient(circle, rgba(255,138,91,.18), transparent 70%);right:-50px;top:-40px}
    .hero-main:after{width:260px;height:260px;background:radial-gradient(circle, rgba(45,199,201,.18), transparent 72%);left:-70px;bottom:-120px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;background:#edf7ff;color:#1457b0;border:1px solid #d8ebff;padding:7px 12px;border-radius:999px;font-size:13px;font-weight:700}
    h1{font-size:clamp(30px,5vw,52px);line-height:1.08;margin:16px 0 14px;letter-spacing:-.8px}
    .lead{font-size:16px;color:var(--muted);max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 20px}
    .hero-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}
    .metric{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#f8fbff);border:1px solid var(--line)}
    .metric strong{display:block;font-size:24px;color:var(--primary)}
    .metric span{display:block;font-size:13px;color:var(--muted)}
    .hero-side{padding:20px;display:grid;gap:14px}
    .mini-card{padding:16px;border-radius:18px;background:linear-gradient(135deg,#f7f9ff,#eef8ff);border:1px solid #dde7ff}
    .mini-card h3{margin:0 0 8px;font-size:18px}
    .mini-list{margin:0;padding:0;list-style:none;display:grid;gap:8px;color:var(--muted);font-size:14px}
    .section{padding:16px 0 4px}
    .section h2{font-size:28px;margin:0 0 10px}
    .section p.section-desc{margin:0 0 18px;color:var(--muted)}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card{padding:20px}
    .card h3{margin:10px 0 8px;font-size:18px}
    .card p,.card li{color:var(--muted)}
    .icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(91,99,255,.12),rgba(45,199,201,.14));color:var(--primary);font-weight:900}
    .flow{counter-reset:step}
    .flow .step{position:relative;padding:20px 18px 18px 18px}
    .flow .step:before{counter-increment:step;content:counter(step);position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:#edf2ff;color:var(--primary);font-weight:800}
    .compare{overflow:auto}
    table{width:100%;border-collapse:separate;border-spacing:0;min-width:860px}
    th,td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f3f6ff;color:var(--text);font-size:14px}
    td{background:#fff;color:var(--muted);font-size:14px}
    tr:hover td{background:#fbfcff}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:#eef8ff;color:#1355aa;font-size:12px;font-weight:700}
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--text);font-size:13px}
    .service-network{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    .network-item{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#f8fbff);border:1px dashed #d8e3f7;text-align:center}
    .network-item strong{display:block;font-size:18px;color:var(--primary)}
    .network-item span{font-size:13px;color:var(--muted)}
    .timeline{list-style:none;padding:0;margin:0;display:grid;gap:12px}
    .timeline li{padding:18px 18px 18px 20px;display:flex;gap:14px;align-items:flex-start}
    .dot{width:12px;height:12px;border-radius:50%;margin-top:8px;background:linear-gradient(135deg,var(--primary),var(--primary2));box-shadow:0 0 0 6px rgba(91,99,255,.08)}
    .price-card strong{font-size:28px;color:var(--text)}
    .reviews,.articles{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review cite{display:block;font-style:normal;font-weight:700;color:var(--text);margin-bottom:6px}
    .review span{display:inline-block;margin-bottom:10px}
    .faq{display:grid;gap:12px}
    .faq-item summary{list-style:none;cursor:pointer;padding:18px 20px;font-weight:700}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item .answer{padding:0 20px 18px;color:var(--muted)}
    .form-card form{display:grid;gap:14px}
    .field-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    label{display:grid;gap:8px;font-size:14px;color:var(--text);font-weight:600}
    input,select,textarea{width:100%;border:1px solid var(--line);border-radius:14px;padding:12px 14px;font:inherit;background:#fff;color:var(--text);outline:none;transition:.2s}
    input:focus,select:focus,textarea:focus{border-color:#9cb4ff;box-shadow:0 0 0 4px rgba(91,99,255,.1)}
    textarea{min-height:120px;resize:vertical}
    .footer{margin-top:18px;padding:24px 0 28px;background:#eef3fb;border-top:1px solid #dbe4f1;color:var(--text)}
    .footer a{color:#1d4fb8}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:start}
    .footer small{color:#526179}
    .floating{position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px}
    .float-btn{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,var(--primary),#7f5bff);color:#fff;box-shadow:0 12px 26px rgba(91,99,255,.28)}
    .backtop{position:fixed;right:18px;bottom:82px;z-index:60;opacity:0;pointer-events:none;transform:translateY(8px);transition:.25s}
    .backtop.show{opacity:1;pointer-events:auto;transform:translateY(0)}
    .backtop a{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:16px;background:#fff;border:1px solid var(--line);color:var(--text);box-shadow:0 10px 22px rgba(16,24,40,.08)}
    .scroll-animate{opacity:0;transform:translateY(16px);transition:.6s ease}
    .scroll-animate.in{opacity:1;transform:translateY(0)}
    .mobile-only{display:none}
    .home-link{font-weight:800}
    @media (max-width: 1024px){
      .hero-shell,.grid-4,.grid-3,.reviews,.articles,.footer-grid,.service-network{grid-template-columns:1fr 1fr}
      .hero-metrics{grid-template-columns:1fr}
    }
    @media (max-width: 760px){
      .nav{min-height:64px}
      .nav-links,.nav-cta{display:none}
      .menu-btn{display:inline-flex}
      .mobile-only{display:block}
      .hero-shell,.grid-4,.grid-3,.grid-2,.reviews,.articles,.footer-grid,.field-grid,.service-network{grid-template-columns:1fr}
      .hero-main,.hero-side{padding:22px}
      .section h2{font-size:24px}
      .floating,.backtop{right:14px}
      table{min-width:720px}
      .nav-panel{display:none;padding:0 0 14px}
      .nav-panel.open{display:block}
      .nav-panel .nav-links{display:flex;justify-content:flex-start;padding:12px 0 0}
      .nav-panel .nav-cta{display:flex;flex-wrap:wrap;padding-top:10px}
    }