:root{
      --bg:#f6f8fc;
      --panel:#ffffff;
      --panel-2:#eef4ff;
      --line:#d9e3f5;
      --text:#122033;
      --muted:#5e6c84;
      --brand:#1d4ed8;
      --brand-2:#2563eb;
      --accent:#00b7ff;
      --warm:#f59e0b;
      --good:#0ea5a8;
      --shadow:0 18px 40px rgba(29,78,216,.12);
      --shadow-soft:0 10px 24px rgba(18,32,51,.08);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(37,99,235,.10), transparent 30%),
        radial-gradient(circle at right 14%, rgba(0,183,255,.10), transparent 24%),
        linear-gradient(180deg, #f8fbff 0%, #f5f8fd 38%, #f7f9fe 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(180%) blur(14px);
      background:rgba(246,248,252,.84);
      border-bottom:1px solid rgba(217,227,245,.8);
    }
    .topbar{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      padding:12px 0;
    }
    .brand{
      display:flex;align-items:center;gap:12px;min-width:0;
    }
    .brand img{width:44px;height:44px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:var(--shadow-soft);padding:5px}
    .brand strong{display:block;font-size:18px;line-height:1.2}
    .brand span{display:block;font-size:12px;color:var(--muted)}
    .menu-toggle{
      display:none;border:1px solid var(--line);background:#fff;color:var(--text);
      border-radius:12px;padding:10px 12px;font-size:14px
    }
    nav{display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:flex-end}
    nav a{font-size:14px;color:var(--text);padding:8px 10px;border-radius:10px}
    nav a:hover{background:rgba(37,99,235,.08);color:var(--brand)}
    .nav-cta{
      background:linear-gradient(135deg,var(--brand),var(--accent));
      color:#fff !important;
      box-shadow:0 12px 24px rgba(37,99,235,.22);
    }
    main{padding-bottom:20px}
    .hero{
      padding:34px 0 20px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.35fr .95fr;gap:22px;align-items:stretch;
    }
    .hero-copy,.hero-side,.section-card,.faq-item,.review-card,.article-card,.service-card,.step-card,.compare-card,.metric,.contact-card,.price-card,.tag-cloud,.timeline,.network-card{
      background:rgba(255,255,255,.88);
      border:1px solid rgba(217,227,245,.95);
      box-shadow:var(--shadow-soft);
      border-radius:var(--radius);
    }
    .hero-copy{padding:34px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:8px 12px;border-radius:999px;
      background:rgba(37,99,235,.08);color:var(--brand);font-size:13px;font-weight:700;
    }
    h1{
      margin:16px 0 14px;font-size:clamp(32px, 5vw, 54px);line-height:1.05;letter-spacing:-.03em;
    }
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.8}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:46px;padding:0 18px;border-radius:14px;border:1px solid transparent;
      font-weight:700;font-size:14px;transition:.25s ease;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;box-shadow:0 14px 24px rgba(37,99,235,.24)}
    .btn-ghost{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px)}
    .hero-side{padding:22px;display:flex;flex-direction:column;gap:16px}
    .stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .metric{padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff, #f5f9ff)}
    .metric strong{display:block;font-size:24px;color:var(--brand);margin-bottom:6px}
    .metric span{font-size:13px;color:var(--muted);line-height:1.5}
    .mini-note{padding:16px;border-radius:18px;background:linear-gradient(135deg, rgba(37,99,235,.10), rgba(0,183,255,.08));border:1px solid rgba(37,99,235,.12)}
    .mini-note b{display:block;margin-bottom:6px}
    .mini-note p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .section{padding:16px 0 8px}
    .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:1.2}
    .section-head p{margin:0;color:var(--muted);max-width:720px;line-height:1.8}
    .section-card{padding:24px}
    .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,.review-card,.article-card,.compare-card,.price-card,.contact-card,.step-card,.network-card,.timeline{padding:20px}
    .service-card h3,.review-card h3,.article-card h3,.price-card h3,.contact-card h3,.step-card h3{margin:0 0 10px;font-size:18px}
    .service-card p,.review-card p,.article-card p,.price-card p,.contact-card p,.step-card p,.compare-card p,.network-card p{margin:0;color:var(--muted);line-height:1.75}
    .badge{
      display:inline-flex;align-items:center;gap:6px;margin-bottom:12px;
      padding:6px 10px;border-radius:999px;background:rgba(29,78,216,.08);color:var(--brand);font-size:12px;font-weight:700
    }
    .service-list{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:10px}
    .service-list li{position:relative;padding-left:18px;color:var(--text);line-height:1.65;font-size:14px}
    .service-list li::before{content:"";position:absolute;left:0;top:.7em;width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent))}
    .flow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step-card{position:relative}
    .step-num{
      width:34px;height:34px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--accent));
      color:#fff;display:inline-flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:12px
    }
    .table-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 14px;border-bottom:1px solid #edf2fb;text-align:left;font-size:14px;line-height:1.7;vertical-align:top}
    th{background:#f5f8ff;color:var(--text);font-weight:800}
    tr:hover td{background:#fbfdff}
    .highlight{color:var(--brand);font-weight:800}
    .pill-row{display:flex;flex-wrap:wrap;gap:10px}
    .pill{
      padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:var(--text)
    }
    .price-card strong{display:block;font-size:24px;color:var(--brand);margin:4px 0 10px}
    .review-meta{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:10px}
    .stars{color:#f59e0b;font-size:18px;letter-spacing:2px}
    .faq-list{display:grid;gap:12px}
    .faq-item{overflow:hidden}
    .faq-q{
      width:100%;border:0;background:none;color:var(--text);text-align:left;padding:18px 20px;font-size:16px;font-weight:700;
      display:flex;align-items:center;justify-content:space-between;gap:12px;cursor:pointer
    }
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 20px}
    .faq-item.open .faq-a{max-height:180px;padding-bottom:18px}
    .faq-a p{margin:0;color:var(--muted);line-height:1.75}
    .icon{width:22px;height:22px;flex:none;border-radius:50%;background:rgba(29,78,216,.08);display:inline-grid;place-items:center;color:var(--brand)}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .article-card a{display:inline-flex;margin-top:12px;color:var(--brand);font-weight:700}
    .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;background:#fff;color:var(--text);
      padding:13px 14px;font:inherit;outline:none;transition:.2s ease
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(37,99,235,.45);box-shadow:0 0 0 4px rgba(37,99,235,.08)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
    .footer-wrap{
      margin-top:18px;
      background:#0f172a;color:#dbe7ff;
      border-top:1px solid rgba(148,163,184,.2);
    }
    footer .container{padding:28px 0}
    footer a{color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.2fr .9fr 1fr;gap:18px}
    .footer-grid p,.footer-grid li,.footer-grid span{color:#dbe7ff;line-height:1.75;font-size:14px}
    .footer-grid ul{margin:0;padding:0;list-style:none;display:grid;gap:8px}
    .footer-bottom{margin-top:18px;padding-top:16px;border-top:1px solid rgba(148,163,184,.18);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:#b8c8e6;font-size:13px}
    .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:16px;background:linear-gradient(135deg,var(--brand),var(--accent));color:#fff;
      display:grid;place-items:center;box-shadow:0 12px 24px rgba(29,78,216,.22);border:0;cursor:pointer
    }
    .customer-panel{
      position:fixed;right:16px;bottom:76px;z-index:59;width:min(320px, calc(100vw - 32px));
      background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:16px;display:none
    }
    .customer-panel.open{display:block}
    .customer-panel h3{margin:0 0 8px;font-size:18px}
    .customer-panel p{margin:0 0 12px;color:var(--muted);font-size:14px;line-height:1.7}
    .customer-panel img{width:100%;border-radius:16px;border:1px solid #e6edf9}
    .tag-cloud{padding:20px}
    .timeline ul{margin:0;padding:0;list-style:none;display:grid;gap:14px}
    .timeline li{position:relative;padding-left:22px;color:var(--text);line-height:1.65}
    .timeline li::before{content:"";position:absolute;left:0;top:.5em;width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent))}
    .network-card{display:flex;flex-direction:column;gap:10px}
    .network-card .row{display:flex;flex-wrap:wrap;gap:10px}
    .mapline{padding:18px;border-radius:18px;background:linear-gradient(135deg,rgba(37,99,235,.08),rgba(14,165,233,.06));border:1px solid rgba(37,99,235,.12)}
    .mobile-only{display:none}
    .divider{height:1px;background:linear-gradient(90deg,transparent,rgba(29,78,216,.22),transparent);margin:16px 0}
    .home-link{font-weight:800;color:var(--brand)}
    .img-row{display:grid;grid-template-columns:1.15fr .85fr;gap:16px;align-items:start}
    .img-row .image-card{border-radius:20px;overflow:hidden;border:1px solid var(--line);background:#fff}
    .muted{color:var(--muted)}
    .small{font-size:13px}
    @media (max-width: 980px){
      .hero-grid,.grid-3,.grid-4,.flow,.review-grid,.article-grid,.footer-grid,.img-row{grid-template-columns:1fr}
      .section-head{align-items:start;flex-direction:column}
      nav{display:none}
      nav.open{display:flex;flex-direction:column;align-items:flex-start;padding:12px 0 16px}
      .menu-toggle{display:inline-flex}
      .topbar{flex-wrap:wrap}
      .mobile-only{display:block}
      .form-grid{grid-template-columns:1fr}
    }
    @media (max-width: 640px){
      .container{width:min(var(--container), calc(100% - 22px))}
      .hero-copy,.hero-side,.section-card,.faq-item,.review-card,.article-card,.service-card,.step-card,.compare-card,.metric,.contact-card,.price-card,.tag-cloud,.timeline,.network-card{border-radius:18px}
      .hero-copy{padding:24px}
      h1{font-size:32px}
      .section-head h2{font-size:24px}
      .hero-actions,.form-actions{flex-direction:column}
      .btn{width:100%}
      .floating{right:12px;bottom:12px}
    }
    .reveal{opacity:0;transform:translateY(14px);transition:opacity .6s ease, transform .6s ease}
    .reveal.show{opacity:1;transform:none}