:root{
      --bg:#f6f8fc;
      --panel:#ffffff;
      --panel-2:#f1f6ff;
      --text:#132238;
      --muted:#5f6f86;
      --line:#dbe5f2;
      --brand:#2e6bff;
      --brand-2:#7c3aed;
      --brand-3:#00b3a4;
      --shadow:0 18px 50px rgba(18,38,75,.10);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;background:
      radial-gradient(circle at top left, rgba(46,107,255,.10), transparent 28%),
      radial-gradient(circle at 80% 10%, rgba(124,58,237,.10), transparent 20%),
      linear-gradient(180deg,#fbfcff 0%,#f5f8ff 100%);
      color:var(--text);line-height:1.6}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(100% - 32px,var(--container));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(251,252,255,.82);backdrop-filter:blur(16px);border-bottom:1px solid rgba(219,229,242,.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;box-shadow:0 8px 20px rgba(46,107,255,.12)}
    .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:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#334156;padding:8px 10px;border-radius:10px}
    .nav-links a:hover{background:#eef4ff;color:var(--brand)}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;transition:.25s ease;box-shadow:none}
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 14px 30px rgba(46,107,255,.22)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(46,107,255,.28)}
    .btn-secondary{background:#edf4ff;color:#1c3e86;border:1px solid #d6e4ff}
    .btn-secondary:hover{transform:translateY(-2px)}
    .menu-toggle{display:none;background:#eef4ff;border:1px solid #d6e4ff;color:#17305f;border-radius:12px;padding:10px 12px}
    .hero{padding:34px 0 18px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch}
    .hero-card{background:linear-gradient(145deg,#0f1f3a,#153a7a 55%,#34206c);color:#fff;border-radius:30px;padding:34px;position:relative;overflow:hidden;box-shadow:var(--shadow)}
    .hero-card:before,.hero-card:after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.10);filter:blur(2px)}
    .hero-card:before{width:180px;height:180px;right:-40px;top:-40px}
    .hero-card:after{width:220px;height:220px;left:-80px;bottom:-90px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(255,255,255,.10);font-size:13px}
    h1{margin:16px 0 14px;font-size:clamp(30px,4vw,52px);line-height:1.08}
    .hero p{margin:0 0 18px;color:rgba(255,255,255,.88);max-width:56ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0}
    .hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
    .stat{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.16);border-radius:20px;padding:14px}
    .stat strong{display:block;font-size:22px}
    .stat span{font-size:12px;color:rgba(255,255,255,.78)}
    .side-stack{display:grid;gap:18px}
    .mini-panel,.profile-card,.contact-card,.form-card,.faq-card,.review-card,.case-card,.service-card,.step-card,.info-card,.comparison-card,.price-card,.timeline-card,.network-card,.resource-card,.article-card,.tag-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
    .mini-panel{padding:22px}
    .mini-panel h2,.section-head h2{margin:0 0 10px;font-size:28px}
    .section{padding:22px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:18px}
    .section-head p{margin:0;color:var(--muted);max-width:70ch}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .service-card,.case-card,.review-card,.article-card,.tag-card,.price-card,.timeline-card,.network-card,.resource-card{padding:20px}
    .service-card:hover,.case-card:hover,.review-card:hover,.article-card:hover,.tag-card:hover,.price-card:hover,.timeline-card:hover,.network-card:hover,.resource-card:hover{transform:translateY(-3px);transition:.22s ease}
    .badge{display:inline-block;padding:6px 10px;border-radius:999px;background:#eef4ff;color:#2150b8;font-size:12px;font-weight:700}
    .muted{color:var(--muted)}
    .icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,rgba(46,107,255,.14),rgba(124,58,237,.14));color:var(--brand);font-weight:800;margin-bottom:12px}
    .flow{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
    .step-card{padding:18px;position:relative}
    .step-card strong{display:block;margin-bottom:8px}
    .step-card .num{position:absolute;top:14px;right:14px;font-size:22px;color:#c9d8ff;font-weight:900}
    .table-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:16px;border-bottom:1px solid #edf2f8;text-align:left;vertical-align:top}
    th{background:#f6f9ff;color:#19325f}
    tr:hover td{background:#fbfdff}
    details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:0 18px;box-shadow:var(--shadow)}
    details+details{margin-top:12px}
    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)}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#f2f6ff;border:1px solid #dbe6ff;color:#25407a;font-size:13px}
    .form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .field{display:flex;flex-direction:column;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-size:14px;font-weight:700;color:#23324a}
    input,select,textarea{width:100%;border:1px solid #d8e3f2;background:#fbfdff;border-radius:14px;padding:13px 14px;font:inherit;color:var(--text);outline:none}
    input:focus,select:focus,textarea:focus{border-color:#87a8ff;box-shadow:0 0 0 4px rgba(46,107,255,.10)}
    textarea{min-height:126px;resize:vertical}
    .footer{margin-top:24px;background:#10203a;color:#dbe8ff;padding:28px 0 18px}
    .footer a{color:#ffffff}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .footer small,.footer p{color:#b8c8e6}
    .footer .tag{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.12);color:#eef4ff}
    .float-tools{position:fixed;right:16px;bottom:16px;z-index:40;display:grid;gap:10px}
    .float-tools a,.backtop{display:grid;place-items:center;width:48px;height:48px;border-radius:16px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 12px 26px rgba(46,107,255,.28)}
    .backtop{border:0;cursor:pointer}
    .mobile-menu{display:none;padding:0 0 16px}
    .mobile-menu a{display:block;padding:12px 0;border-top:1px solid #e6eef8;color:#32435c}
    .reveal{opacity:0;transform:translateY(14px);transition:.55s ease}
    .reveal.show{opacity:1;transform:none}
    @media (max-width: 980px){
      .hero-grid,.split,.grid-4,.grid-3,.flow,.footer-grid{grid-template-columns:1fr 1fr}
      .flow{grid-template-columns:1fr 1fr}
      .hero-card{padding:28px}
      .section-head,.nav{align-items:center}
      .nav-links{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-menu.show{display:block}
    }
    @media (max-width: 720px){
      .hero-grid,.split,.grid-4,.grid-3,.flow,.footer-grid,.hero-stats,.form{grid-template-columns:1fr}
      .hero{padding-top:18px}
      .hero-card{border-radius:24px;padding:22px}
      .section-head{flex-direction:column;align-items:flex-start}
      .container{width:min(100% - 24px,var(--container))}
      .brand strong{font-size:16px}
      h1{font-size:30px}
    }