:root{
      --bg:#f5f8fb;
      --card:#ffffff;
      --ink:#123047;
      --muted:#5a6d7f;
      --line:#d8e3ec;
      --primary:#17a7c6;
      --primary2:#0f7fd6;
      --accent:#12c2a2;
      --soft:#eef9fb;
      --shadow:0 14px 40px rgba(18,48,71,.08);
      --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(23,167,198,.12), transparent 32%),
        radial-gradient(circle at top right, rgba(18,194,162,.10), transparent 26%),
        linear-gradient(180deg,#f9fcfe 0%, #f3f8fb 42%, #f5f8fb 100%);
      color:var(--ink);
      line-height:1.6;
    }
    a{color:var(--primary2);text-decoration:none}
    img{max-width:100%;display:block}
    .container{max-width:var(--container);margin:0 auto;padding:0 20px}
    .site-header{
      position:sticky;top:0;z-index:60;
      backdrop-filter:saturate(180%) blur(14px);
      background:rgba(245,248,251,.82);
      border-bottom:1px solid rgba(216,227,236,.7);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:72px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand img{width:42px;height:42px;object-fit:contain}
    .brand-text{display:flex;flex-direction:column;min-width:0}
    .brand-text strong{font-size:16px;line-height:1.1}
    .brand-text span{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(--ink);padding:8px 2px;position:relative}
    .nav-links a::after{
      content:"";position:absolute;left:0;bottom:4px;width:100%;height:2px;
      background:linear-gradient(90deg,var(--primary),var(--accent));
      transform:scaleX(0);transform-origin:left;transition:.25s ease;
    }
    .nav-links a:hover::after,.nav-links a:focus::after{transform:scaleX(1)}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;color:var(--ink);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-main,.hero-side,.section-card,.panel,.review,.faq-item,.article,.pricing,.compare,.contact-box,.timeline,.network{
      background:var(--card);border:1px solid rgba(216,227,236,.95);border-radius:var(--radius);box-shadow:var(--shadow);
    }
    .hero-main{padding:32px;position:relative;overflow:hidden}
    .hero-main::before{
      content:"";position:absolute;inset:-2px auto auto -2px;width:180px;height:180px;border-radius:50%;
      background:radial-gradient(circle, rgba(23,167,198,.22), transparent 68%);
      pointer-events:none;
    }
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:var(--soft);color:#0b7285;font-weight:600;font-size:13px}
    h1{margin:16px 0 14px;font-size:clamp(30px,4.2vw,54px);line-height:1.08;letter-spacing:-.02em}
    .lead{font-size:16px;color:var(--muted);max-width:58ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:13px 18px;border-radius:14px;border:1px solid transparent;font-weight:700;font-size:14px;transition:.25s ease;
      cursor:pointer;
    }
    .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 10px 20px rgba(15,127,214,.18)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 24px rgba(15,127,214,.22)}
    .btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
    .btn-ghost:hover{transform:translateY(-2px);border-color:#a8c7da}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .point{padding:14px;border-radius:16px;background:linear-gradient(180deg,#f9fcfe,#eef8fb);border:1px solid #dbe9f2}
    .point strong{display:block;font-size:18px}
    .point span{font-size:13px;color:var(--muted)}
    .hero-side{padding:22px;display:flex;flex-direction:column;gap:14px;justify-content:space-between}
    .hero-side .mini{padding:16px;border-radius:16px;background:linear-gradient(180deg,#f8fbfd,#eef8fb);border:1px solid #dbe9f2}
    .mini h3{margin:0 0 8px;font-size:16px}
    .mini p{margin:0;color:var(--muted);font-size:14px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .metric{padding:18px}
    .metric strong{display:block;font-size:28px;line-height:1}
    .metric span{color:var(--muted);font-size:13px}
    section{padding:18px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:14px}
    .section-head h2{margin:0;font-size:28px}
    .section-head p{margin:0;color:var(--muted);max-width:70ch}
    .section-card{padding:24px}
    .service-grid,.case-grid,.review-grid,.article-grid,.faq-grid,.team-grid,.feature-grid,.price-grid,.compare-grid,.faq-list,.network-grid,.support-grid{display:grid;gap:16px}
    .service-grid{grid-template-columns:repeat(3,1fr)}
    .feature-card,.case-card,.review,.article,.faq-item,.pricing,.compare,.network,.contact-box,.timeline,.support-item{
      padding:20px;transition:.25s ease;
    }
    .feature-card:hover,.case-card:hover,.review:hover,.article:hover,.pricing:hover,.compare:hover,.network:hover,.contact-box:hover,.timeline:hover,.support-item:hover{
      transform:translateY(-3px);box-shadow:0 18px 42px rgba(18,48,71,.10)
    }
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#eef8fb;border:1px solid #d8e9f2;color:#13485d;font-size:13px}
    .split{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .timeline{display:grid;gap:12px}
    .step{display:flex;gap:14px;align-items:flex-start}
    .num{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-weight:700;flex:0 0 auto}
    .table-wrap{overflow-x:auto;border-radius:18px}
    table{width:100%;border-collapse:collapse;min-width:760px;background:#fff}
    th,td{padding:14px 12px;border-bottom:1px solid var(--line);text-align:left;font-size:14px;vertical-align:top}
    th{background:#f3f9fc;color:#10344a}
    .rating{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
    .stars{color:#f5a524;font-size:20px;letter-spacing:2px}
    .form{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .form .full{grid-column:1/-1}
    input,select,textarea{
      width:100%;border:1px solid #cfdce6;background:#fff;color:var(--ink);border-radius:14px;padding:13px 14px;font:inherit;outline:none;
    }
    input:focus,select:focus,textarea:focus{border-color:#8fc8dc;box-shadow:0 0 0 4px rgba(23,167,198,.10)}
    textarea{min-height:120px;resize:vertical}
    .footer{
      margin-top:18px;padding:24px 0 30px;border-top:1px solid rgba(216,227,236,.9);
      background:linear-gradient(180deg,#f7fbfd,#f1f7fa);
      color:var(--ink);
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .footer h3,.footer h4{margin:0 0 10px}
    .footer p,.footer a,.footer li{color:var(--muted);font-size:14px}
    .footer a:hover{color:var(--primary2)}
    .footer-bottom{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:70;display:flex;flex-direction:column;gap:10px;
    }
    .float-btn{
      width:48px;height:48px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;box-shadow:0 12px 24px rgba(15,127,214,.25)
    }
    .contact-fab{position:fixed;left:16px;bottom:16px;z-index:70;max-width:280px}
    .contact-fab .box{padding:14px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
    .contact-fab img{width:96px;height:96px;object-fit:cover;border-radius:12px;border:1px solid var(--line)}
    .reveal{opacity:0;transform:translateY(16px);transition:.6s ease}
    .reveal.in{opacity:1;transform:none}
    .mobile-only{display:none}
    .compare-badge{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eef8fb;color:#0b7285;font-weight:700}
    .note{font-size:13px;color:var(--muted)}
    .article-list{display:grid;gap:12px}
    .article-link{display:flex;justify-content:space-between;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line);color:var(--ink)}
    .article-link:last-child{border-bottom:none;padding-bottom:0}
    .article-link span{color:var(--muted)}
    .kpi-strip{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    @media (max-width: 1024px){
      .hero-grid,.service-grid,.grid-4,.split,.footer-grid,.kpi-strip{grid-template-columns:1fr 1fr}
      .hero-main,.hero-side{padding:24px}
    }
    @media (max-width: 760px){
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .nav.open .nav-links{
        display:flex;position:absolute;left:20px;right:20px;top:72px;flex-direction:column;align-items:flex-start;
        padding:16px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)
      }
      .hero-grid,.service-grid,.grid-4,.split,.footer-grid,.kpi-strip,.form{grid-template-columns:1fr}
      .hero-points{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .contact-fab{max-width:calc(100vw - 32px)}
      .mobile-only{display:block}
      .desktop-only{display:none}
      .floating{right:12px;bottom:12px}
    }