:root{
      --bg:#f4f8fc;
      --bg2:#ffffff;
      --card:#ffffff;
      --line:#dbe7f2;
      --text:#19324a;
      --muted:#5e748a;
      --brand:#157efb;
      --brand2:#00c2ff;
      --brand3:#7c5cff;
      --ok:#14b86a;
      --warn:#f59e0b;
      --shadow:0 18px 50px rgba(18,44,72,.10);
      --shadow2:0 12px 28px rgba(21,126,251,.12);
      --radius:20px;
      --radius2:28px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(21,126,251,.12), transparent 28%),
        radial-gradient(circle at 85% 0%, rgba(124,92,255,.10), transparent 26%),
        linear-gradient(180deg,#f8fbff 0%, #f4f8fc 42%, #f7fbff 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--container), calc(100% - 32px)); margin:0 auto}
    .site-header{
      position:sticky; top:0; z-index:60;
      backdrop-filter:blur(14px);
      background:rgba(246,250,255,.82);
      border-bottom:1px solid rgba(219,231,242,.8);
    }
    .nav{
      display:flex; align-items:center; justify-content:space-between; gap:18px;
      padding:14px 0;
    }
    .brand{
      display:flex; align-items:center; gap:12px; min-width:0;
    }
    .brand img{width:40px;height:40px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:0 8px 18px rgba(0,0,0,.06)}
    .brand .name{font-weight:800;letter-spacing:.02em}
    .brand .sub{font-size:12px;color:var(--muted);margin-top:2px}
    .nav-links{display:flex; align-items:center; gap:18px; flex-wrap:wrap; justify-content:flex-end}
    .nav-links a{font-size:14px;color:#264661;padding:8px 10px;border-radius:999px}
    .nav-links a:hover{background:rgba(21,126,251,.08); color:var(--brand)}
    .nav-actions{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:11px 16px;font-weight:700;font-size:14px;
      transition:.25s ease; cursor:pointer; white-space:nowrap;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:var(--shadow2)}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-1px);box-shadow:0 14px 26px rgba(21,126,251,.16)}
    .menu-btn{display:none;background:#fff;border:1px solid var(--line);color:var(--text)}
    .hero{
      padding:44px 0 30px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.25fr .75fr;gap:20px;align-items:stretch;
    }
    .hero-main,.hero-side,.section-card,.panel,.quote,.faq-item,.form-card,.article-card,.review-card,.case-card,.timeline-card,.price-card{
      background:rgba(255,255,255,.84);
      border:1px solid rgba(219,231,242,.95);
      border-radius:var(--radius2);
      box-shadow:var(--shadow);
    }
    .hero-main{padding:30px; position:relative; overflow:hidden}
    .hero-main::before,.hero-main::after{
      content:""; position:absolute; border-radius:999px; filter:blur(0);
      pointer-events:none;
    }
    .hero-main::before{width:260px;height:260px;right:-110px;top:-120px;background:radial-gradient(circle, rgba(21,126,251,.16), transparent 68%)}
    .hero-main::after{width:220px;height:220px;right:48px;bottom:-120px;background:radial-gradient(circle, rgba(124,92,255,.12), transparent 68%)}
    .kicker{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border-radius:999px;background:rgba(21,126,251,.08);
      color:var(--brand);font-weight:700;font-size:13px;
    }
    h1{margin:14px 0 12px;font-size:clamp(32px,4.6vw,54px);line-height:1.06;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.9;max-width:62ch}
    .hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .hero-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:24px}
    .mini-card{
      background:linear-gradient(180deg,#fff, #f8fbff);
      border:1px solid var(--line); border-radius:18px; padding:14px 14px 13px;
    }
    .mini-card strong{display:block;font-size:20px;line-height:1.2}
    .mini-card span{display:block;margin-top:6px;color:var(--muted);font-size:13px;line-height:1.55}
    .hero-side{padding:20px;display:flex;flex-direction:column;gap:14px;justify-content:space-between}
    .side-box{
      border-radius:18px;padding:16px;border:1px solid var(--line);background:linear-gradient(180deg,#fff, #f6fbff);
    }
    .side-box h3{margin:0 0 8px;font-size:16px}
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:8px 10px;border-radius:999px;background:#eef6ff;color:#23527a;font-size:13px;border:1px solid #d7e8ff}
    .section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:14px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:28px;line-height:1.15}
    .section-head p{margin:0;color:var(--muted);max-width:68ch;line-height:1.8}
    .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}
    .section-card,.panel,.quote,.faq-item,.form-card,.article-card,.review-card,.case-card,.timeline-card,.price-card{padding:20px}
    .metric{display:flex;flex-direction:column;gap:8px}
    .metric .num{font-size:30px;font-weight:800;color:#0f3d68}
    .metric .label{font-weight:700}
    .metric .desc{color:var(--muted);line-height:1.7;font-size:14px}
    .feature{display:flex;flex-direction:column;gap:10px;height:100%}
    .feature .icon{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg,rgba(21,126,251,.14),rgba(124,92,255,.14));color:#135aa6;font-size:20px;
    }
    .feature p,.case-card p,.review-card p,.article-card p,.timeline-card p,.price-card p{margin:0;color:var(--muted);line-height:1.8}
    .feature h3,.case-card h3,.review-card h3,.article-card h3,.price-card h3,.timeline-card h3{margin:0;font-size:18px}
    .split{
      display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:stretch
    }
    .compare-wrap{overflow:auto;border-radius:var(--radius2);border:1px solid var(--line);background:rgba(255,255,255,.84);box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:860px;background:#fff}
    th,td{padding:14px 16px;border-bottom:1px solid #e6eef7;text-align:left;vertical-align:top}
    th{background:#f5f9fd;font-size:14px}
    td{font-size:14px;line-height:1.7}
    .good{color:#0f7a44;font-weight:700}
    .star{color:#f59e0b;font-weight:800}
    .flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .step{
      position:relative;padding:18px;border-radius:22px;border:1px solid var(--line);background:linear-gradient(180deg,#fff,#f8fbff)
    }
    .step .index{
      width:36px;height:36px;border-radius:50%;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand3));color:#fff;font-weight:800;margin-bottom:12px;
    }
    .step h3{margin:0 0 8px;font-size:17px}
    .step p{margin:0;color:var(--muted);line-height:1.8;font-size:14px}
    .split-2{display:grid;grid-template-columns:1.1fr .9fr;gap:14px}
    .list{display:grid;gap:10px}
    .list-item{display:flex;gap:10px;align-items:flex-start}
    .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2));margin-top:8px;flex:none}
    .reviews,.cases,.articles,.prices,.timeline,.faq,.network{display:grid;gap:14px}
    .review-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;background:#eef7ff;color:#1f5d90;font-size:12px;font-weight:700}
    details{
      border:1px solid var(--line);border-radius:18px;background:#fff;overflow:hidden
    }
    summary{
      list-style:none;cursor:pointer;padding:16px 18px;font-weight:700;display:flex;justify-content:space-between;gap:14px;align-items:center
    }
    summary::-webkit-details-marker{display:none}
    details .answer{padding:0 18px 16px;color:var(--muted);line-height:1.9}
    .form-grid{
      display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px
    }
    label{display:grid;gap:8px;font-size:14px;font-weight:700;color:#24455f}
    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:118px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:#87bbff;box-shadow:0 0 0 4px rgba(21,126,251,.10)}
    .full{grid-column:1/-1}
    .footer{
      margin-top:18px;padding:22px 0 34px;border-top:1px solid rgba(219,231,242,.92)
    }
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;gap:18px}
    .footer h3{margin:0 0 12px;font-size:17px}
    .footer p,.footer a,.footer li{color:#4f677c;line-height:1.85;font-size:14px}
    .footer ul{list-style:none;padding:0;margin:0;display:grid;gap:8px}
    .copyright{margin-top:16px;padding-top:16px;border-top:1px solid #e3edf7;color:#60778a;font-size:13px;line-height:1.8}
    .float-tools{
      position:fixed;right:16px;bottom:16px;z-index:70;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(--brand2));color:#fff;box-shadow:0 12px 28px rgba(21,126,251,.22);
      border:none;cursor:pointer;font-size:18px
    }
    .float-panel{
      position:fixed;right:16px;bottom:76px;z-index:71;width:min(340px, calc(100vw - 32px));
      background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);padding:16px;display:none
    }
    .float-panel.open{display:block}
    .float-panel img{width:100%;border-radius:16px;border:1px solid var(--line);background:#fff}
    .float-panel .small{color:var(--muted);font-size:13px;line-height:1.7}
    .scroll-animate{opacity:0;transform:translateY(14px);transition:.7s ease}
    .scroll-animate.in{opacity:1;transform:none}
    .mobile-nav{display:none}
    .anchor-title{display:flex;align-items:center;gap:10px;margin-bottom:12px}
    .anchor-title .line{height:1px;flex:1;background:linear-gradient(90deg,rgba(21,126,251,.25),transparent)}
    .article-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
    .article-card time{display:inline-block;margin-top:10px;color:#6d8397;font-size:13px}
    .service-net{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px}
    .service-node{padding:14px;border:1px solid var(--line);border-radius:18px;background:#fff;text-align:center;font-weight:700;color:#274862}
    .price-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
    .price-card .amount{font-size:28px;font-weight:800;color:#0f3d68;margin:8px 0}
    .price-card ul{margin:0;padding-left:18px;color:var(--muted);line-height:1.9}
    .article-card:hover,.review-card:hover,.case-card:hover,.feature:hover,.price-card:hover,.timeline-card:hover,.section-card:hover,.panel:hover,.faq-item:hover{
      transform:translateY(-2px);transition:.22s ease;box-shadow:0 18px 42px rgba(18,44,72,.12)
    }
    @media (max-width: 1024px){
      .hero-grid,.split,.split-2,.footer-grid,.grid-4,.grid-3,.flow,.article-list,.price-list,.service-net{grid-template-columns:1fr 1fr}
      .service-net{grid-template-columns:repeat(3,minmax(0,1fr))}
    }
    @media (max-width: 760px){
      .nav-links,.nav-actions{display:none}
      .menu-btn{display:inline-flex}
      .mobile-nav{display:none;padding:0 0 14px}
      .mobile-nav.open{display:block}
      .mobile-nav .stack{display:grid;gap:8px;padding:12px 0 6px}
      .mobile-nav a{padding:12px 14px;border-radius:14px;background:#fff;border:1px solid var(--line);color:#284861}
      .hero{padding-top:24px}
      .hero-grid,.split,.split-2,.footer-grid,.grid-4,.grid-3,.flow,.article-list,.price-list,.service-net,.form-grid{grid-template-columns:1fr}
      .hero-main{padding:22px}
      .hero-points{grid-template-columns:1fr}
      .section-head{align-items:flex-start;flex-direction:column}
      .section-head h2{font-size:24px}
      .table-scroll{overflow-x:auto}
      table{min-width:780px}
      .float-panel{width:min(320px, calc(100vw - 32px))}
    }