:root{
      --bg:#f6f8fc;
      --surface:#ffffff;
      --surface-2:#f1f5ff;
      --text:#152033;
      --muted:#5c6b84;
      --line:#dbe4f0;
      --brand:#4f6bff;
      --brand-2:#7f5cff;
      --accent:#19d3ff;
      --warm:#ffb86b;
      --shadow:0 18px 40px rgba(37,63,140,.10);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:
      radial-gradient(circle at top left, rgba(79,107,255,.10), transparent 28%),
      radial-gradient(circle at top right, rgba(25,211,255,.12), transparent 24%),
      linear-gradient(180deg,#f8fbff 0%, #f6f8fc 35%, #f7f9fd 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(--container)); margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(246,248,252,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(219,228,240,.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;padding:4px;border:1px solid var(--line)}
    .brand strong{display:block;font-size:16px;line-height:1.2}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.25s}
    .nav-links a:hover,.nav-links a.active{color:var(--text);background:rgba(79,107,255,.10)}
    .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;transition:.25s;cursor:pointer}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 10px 24px rgba(79,107,255,.28)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(79,107,255,.34)}
    .btn-ghost{background:#fff;color:var(--text);border-color:var(--line)}
    .btn-ghost:hover{border-color:rgba(79,107,255,.35);transform:translateY(-1px)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px}
    .hero{padding:42px 0 24px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-main,.hero-side,.section-card,.info-card,.review-card,.faq-item,.form-card,.case-card,.article-card,.compare-box{background:rgba(255,255,255,.82);border:1px solid rgba(219,228,240,.9);box-shadow:var(--shadow);border-radius:var(--radius)}
    .hero-main{padding:34px;position:relative;overflow:hidden}
    .hero-main:before,.hero-main:after{content:"";position:absolute;border-radius:50%;filter:blur(10px);opacity:.95;pointer-events:none}
    .hero-main:before{width:220px;height:220px;background:radial-gradient(circle, rgba(79,107,255,.16), transparent 65%);right:-40px;top:-30px}
    .hero-main:after{width:180px;height:180px;background:radial-gradient(circle, rgba(25,211,255,.16), transparent 65%);left:-30px;bottom:-40px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(79,107,255,.10);color:#3750d8;font-weight:700;font-size:13px}
    h1{font-size:clamp(30px,5vw,54px);line-height:1.08;margin:16px 0 14px}
    .lead{font-size:17px;color:var(--muted);max-width:58ch}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:22px 0}
    .point{padding:14px;border-radius:16px;background:linear-gradient(180deg,#f7f9ff,#eef4ff);border:1px solid #d9e2ff}
    .point b{display:block;font-size:18px;color:var(--text)}
    .point span{font-size:13px;color:var(--muted)}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-side{padding:24px;display:grid;gap:16px}
    .mini-stat{padding:16px;border-radius:16px;background:linear-gradient(180deg,#fff,#f6f8ff);border:1px solid var(--line)}
    .mini-stat strong{font-size:22px;display:block}
    .mini-stat span{font-size:13px;color:var(--muted)}
    .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}
    .section-head p{margin:0;color:var(--muted);max-width:62ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .info-card,.review-card,.case-card,.article-card,.form-card,.compare-box,.faq-item{padding:20px}
    .info-card h3,.review-card h3,.case-card h3,.article-card h3{margin:0 0 8px;font-size:18px}
    .muted{color:var(--muted)}
    .chips{display:flex;flex-wrap:wrap;gap:10px}
    .chip{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#41506c}
    .timeline{display:grid;gap:12px}
    .step{display:flex;gap:14px;padding:16px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .num{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--brand),var(--accent));font-weight:800;flex:0 0 auto}
    .compare-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:14px 16px;border-bottom:1px solid #edf1f7;text-align:left;vertical-align:top}
    th{background:#f5f8ff;color:#20304a}
    tr:hover td{background:#fbfcff}
    .rating{display:flex;align-items:center;gap:8px;font-weight:800}
    .stars{color:#ffb000;letter-spacing:1px}
    .accordion{display:grid;gap:12px}
    .faq-item button{width:100%;background:none;border:0;padding:0;text-align:left;font:inherit;color:var(--text);display:flex;justify-content:space-between;align-items:center;gap:12px;cursor:pointer}
    .faq-item .answer{max-height:0;overflow:hidden;transition:max-height .28s ease;color:var(--muted)}
    .faq-item.open .answer{max-height:180px;margin-top:10px}
    .faq-item .icon{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:#eef3ff;color:#4258dd;flex:0 0 auto}
    .form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    label{display:block;font-size:14px;font-weight:700;margin-bottom:8px}
    input,select,textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:14px;padding:12px 14px;font:inherit;color:var(--text);outline:none;transition:.2s}
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#89a1ff;box-shadow:0 0 0 4px rgba(79,107,255,.10)}
    .submit-row{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:10px}
    .article-list{display:grid;gap:12px}
    .article-item{display:flex;justify-content:space-between;gap:12px;padding:15px 16px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .article-item b{display:block}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    footer{margin-top:18px;background:#eef3fb;border-top:1px solid #d8e2f1;color:#22324d}
    footer a{color:#2445d8}
    .footer-top{display:grid;grid-template-columns:1.1fr .9fr;gap:16px;padding:24px 0}
    .footer-bottom{padding:14px 0;border-top:1px solid #d8e2f1;color:#52637d;font-size:14px}
    .floating{position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px}
    .float-btn{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 12px 24px rgba(79,107,255,.3)}
    .mobile-only{display:none}
    .scroll-top{opacity:0;pointer-events:none;transform:translateY(8px);transition:.25s}
    .scroll-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
    .fade-in{opacity:0;transform:translateY(18px);transition:.7s ease}
    .fade-in.show{opacity:1;transform:none}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:8px 12px;border-radius:999px;background:linear-gradient(180deg,#ffffff,#f0f4ff);border:1px solid var(--line);font-size:13px}
    .qr{display:flex;gap:16px;align-items:center}
    .qr img{width:112px;height:112px;object-fit:cover;border-radius:16px;border:1px solid var(--line);background:#fff}
    .service-network{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
    .network-item{padding:16px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.grid-2,.footer-top,.service-network{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .mobile-only{display:block}
      .nav-links.open{display:flex;position:absolute;left:16px;right:16px;top:72px;flex-direction:column;align-items:stretch;background:#fff;padding:12px;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
      .nav{position:relative}
      .form-grid{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
    }