:root{
      --bg:#f5f8fc;
      --panel:#ffffff;
      --panel-2:#f8fbff;
      --text:#162033;
      --muted:#5f6b84;
      --line:#d9e4f2;
      --brand:#1f7bff;
      --brand-2:#13c2c2;
      --brand-3:#ff9f43;
      --shadow:0 18px 45px rgba(31,123,255,.10);
      --shadow-2:0 10px 24px rgba(20,40,80,.08);
      --radius:20px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:
      radial-gradient(circle at top left, rgba(31,123,255,.10), transparent 28%),
      radial-gradient(circle at 90% 10%, rgba(19,194,194,.10), transparent 24%),
      linear-gradient(180deg,#fbfdff 0%, #f3f7fc 100%);}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{position:sticky;top:0;z-index:50;background:rgba(251,253,255,.82);backdrop-filter:blur(16px);border-bottom:1px solid rgba(217,228,242,.8)}
    .topbar{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 .logo{width:44px;height:44px;border-radius:12px;object-fit:contain;background:#fff;padding:6px;border:1px solid var(--line);box-shadow:var(--shadow-2)}
    .brand strong{display:block;font-size:16px;line-height:1.2}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
    .nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:12px;padding:10px 12px;color:var(--text)}
    nav{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    nav a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:10px}
    nav a:hover{background:#edf5ff;color:var(--brand)}
    .home-link{color:var(--brand);font-weight:700}
    .cta{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:14px;background:linear-gradient(135deg,var(--brand),#4b9dff);color:#fff;font-weight:700;box-shadow:0 14px 28px rgba(31,123,255,.22);border:0}
    .cta.secondary{background:#fff;color:var(--text);border:1px solid var(--line);box-shadow:none}
    main{overflow:hidden}
    section{padding:28px 0}
    .hero{padding:34px 0 26px}
    .hero-wrap{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:stretch}
    .hero-card,.glass-card,.panel{background:linear-gradient(180deg,rgba(255,255,255,.96),rgba(248,251,255,.96));border:1px solid rgba(217,228,242,.9);border-radius:var(--radius);box-shadow:var(--shadow)}
    .hero-card{padding:28px;position:relative;overflow:hidden}
    .hero-card:before,.hero-card:after{content:"";position:absolute;border-radius:999px;filter:blur(2px);pointer-events:none}
    .hero-card:before{width:280px;height:280px;background:rgba(31,123,255,.10);top:-110px;right:-90px}
    .hero-card:after{width:180px;height:180px;background:rgba(19,194,194,.12);bottom:-70px;right:120px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#edf5ff;color:var(--brand);font-size:13px;font-weight:700}
    h1{margin:16px 0 12px;font-size:clamp(30px,5vw,52px);line-height:1.08;letter-spacing:-.02em}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.85;max-width:56ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .mini{padding:14px;border-radius:16px;background:rgba(255,255,255,.72);border:1px solid var(--line)}
    .mini b{display:block;font-size:18px;margin-bottom:4px}
    .mini span{font-size:13px;color:var(--muted);line-height:1.5}
    .hero-side{display:grid;gap:14px}
    .stat-grid,.service-grid,.case-grid,.review-grid,.article-grid,.network-grid,.pricing-grid,.compare-grid,.steps-grid,.tag-cloud{display:grid;gap:16px}
    .stat-grid{grid-template-columns:repeat(4,1fr)}
    .stat{padding:20px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-2)}
    .stat .num{font-size:28px;font-weight:800;color:var(--brand);line-height:1}
    .stat p{margin:10px 0 0;color:var(--muted);font-size:14px;line-height:1.65}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:18px}
    .section-title h2{margin:0;font-size:26px}
    .section-title p{margin:0;color:var(--muted);max-width:62ch;line-height:1.75}
    .service-grid{grid-template-columns:repeat(3,1fr)}
    .card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:var(--shadow-2);transition:transform .24s ease, box-shadow .24s ease, border-color .24s ease}
    .card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bdd3ee}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p,.card li{color:var(--muted);line-height:1.75}
    .card ul{margin:12px 0 0;padding:0 0 0 18px}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .timeline{display:grid;gap:14px}
    .timeline-item{display:grid;grid-template-columns:86px 1fr;gap:14px;padding:16px;border:1px solid var(--line);border-radius:16px;background:#fff}
    .timeline-item b{color:var(--brand)}
    .table-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow-2)}
    table{width:100%;border-collapse:collapse;min-width:780px}
    th,td{padding:16px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
    th{background:#f2f7ff;font-size:14px}
    td{color:var(--muted);font-size:14px;line-height:1.7}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:#effaf8;color:#0c8a75;font-size:12px;font-weight:700}
    .faq details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px 18px;box-shadow:var(--shadow-2)}
    .faq details+details{margin-top:12px}
    .faq summary{cursor:pointer;font-weight:700;list-style:none}
    .faq summary::-webkit-details-marker{display:none}
    .faq p{margin:10px 0 0;color:var(--muted);line-height:1.75}
    .review-grid{grid-template-columns:repeat(3,1fr)}
    .quote{position:relative}
    .quote:before{content:"“";position:absolute;top:8px;right:16px;font-size:52px;color:#dbe8fb;line-height:1}
    .author{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);color:var(--text)}
    .author span{display:block;color:var(--muted);font-size:13px}
    .article-grid{grid-template-columns:repeat(3,1fr)}
    .article a{display:inline-flex;margin-top:12px;color:var(--brand);font-weight:700}
    .tag-cloud{grid-template-columns:repeat(4,1fr)}
    .tag-cloud .card{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 11px;border-radius:999px;background:#f3f8ff;border:1px solid #dce8f8;color:#36506f;font-size:13px}
    .pricing-grid{grid-template-columns:repeat(3,1fr)}
    .price{padding:20px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow-2)}
    .price strong{font-size:28px;color:var(--brand)}
    .price ul{margin:14px 0 0;padding-left:18px;color:var(--muted);line-height:1.8}
    .form-grid{display:grid;grid-template-columns:1fr 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 var(--line);border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text);outline:none}
    input:focus,select:focus,textarea:focus{border-color:#7fb1ff;box-shadow:0 0 0 4px rgba(31,123,255,.10)}
    textarea{min-height:118px;resize:vertical}
    .full{grid-column:1/-1}
    .submitbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-top:14px}
    .contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
    .contact-box{padding:20px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-2)}
    .contact-list{display:grid;gap:10px;margin:14px 0 0}
    .contact-list div{display:flex;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);color:var(--muted)}
    .contact-list strong{color:var(--text)}
    .footer-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links a{padding:8px 11px;border-radius:999px;background:#edf5ff;color:#285dba;font-size:13px}
    footer{padding:22px 0 28px;margin-top:6px;border-top:1px solid var(--line);background:#f9fbff;color:#314055}
    footer a{color:#1f7bff}
    .floating{position:fixed;right:16px;bottom:18px;z-index:60;display:grid;gap:10px}
    .float-btn{width:54px;height:54px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;display:grid;place-items:center;box-shadow:0 14px 24px rgba(31,123,255,.24);font-weight:800}
    .float-card{max-width:240px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px;box-shadow:var(--shadow-2);display:none}
    .float-card img{width:128px;margin:8px auto 0;border-radius:12px;border:1px solid var(--line)}
    .backtop{display:none}
    .scrollshow{display:block}
    .muted{color:var(--muted)}
    .hero-visual{display:grid;gap:14px}
    .hero-panel{padding:18px;border-radius:18px;background:linear-gradient(135deg,#ffffff,#eef6ff);border:1px solid var(--line)}
    .hero-panel .row{display:flex;justify-content:space-between;gap:12px;align-items:center}
    .hero-panel .row b{font-size:18px}
    .hero-panel .row span{color:var(--muted);font-size:13px}
    .meter{height:10px;border-radius:999px;background:#e8f0fb;overflow:hidden;margin-top:14px}
    .meter i{display:block;height:100%;width:78%;border-radius:inherit;background:linear-gradient(90deg,var(--brand),var(--brand-2))}
    .reveal{opacity:0;transform:translateY(14px);transition:opacity .7s ease, transform .7s ease}
    .reveal.show{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-wrap,.split,.contact-grid{grid-template-columns:1fr}
      .stat-grid,.service-grid,.review-grid,.article-grid,.pricing-grid,.tag-cloud,.form-grid{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr}
    }
    @media (max-width: 720px){
      .nav-toggle{display:inline-flex}
      nav{display:none;position:absolute;left:16px;right:16px;top:66px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start}
      nav.open{display:flex}
      .topbar{position:relative}
      .stat-grid,.service-grid,.review-grid,.article-grid,.pricing-grid,.tag-cloud,.form-grid{grid-template-columns:1fr}
      .section-title{flex-direction:column;align-items:flex-start}
      .hero-card{padding:22px}
      .hero-actions{width:100%}
      .cta{width:100%}
      .timeline-item{grid-template-columns:1fr}
      .floating{right:12px;bottom:12px}
    }