:root{
      --bg:#f7f4ef;
      --bg2:#eef4ff;
      --card:#ffffff;
      --card2:#fffaf2;
      --line:#e6ddcf;
      --text:#1f2a37;
      --muted:#667085;
      --brand:#2f6bff;
      --brand2:#ff7a59;
      --brand3:#18a999;
      --shadow:0 12px 30px rgba(31,42,55,.08);
      --shadow2:0 18px 40px rgba(47,107,255,.12);
      --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;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(47,107,255,.08), transparent 32%),
        radial-gradient(circle at top right, rgba(255,122,89,.10), transparent 30%),
        linear-gradient(180deg, #fffdf9 0%, var(--bg) 45%, #f9fbff 100%);
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(100% - 32px, var(--container)); margin:0 auto}
    .site-header{
      position:sticky;top:0;z-index:50;
      backdrop-filter:saturate(180%) blur(10px);
      background:rgba(255,252,247,.82);
      border-bottom:1px solid rgba(230,221,207,.7);
    }
    .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 img{width:42px;height:42px;object-fit:contain;border-radius:12px;background:#fff;box-shadow:0 6px 16px rgba(0,0,0,.06)}
    .brand .name{font-weight:800;font-size:18px;line-height:1.1}
    .brand .sub{font-size:12px;color:var(--muted);margin-top:3px}
    .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:16px;flex-wrap:wrap;justify-content:flex-end}
    .nav a{font-size:14px;color:#334155;padding:8px 10px;border-radius:10px;transition:.2s}
    .nav a:hover{background:#f2f6ff;color:var(--brand)}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border:none;border-radius:14px;padding:12px 18px;font-weight:700;cursor:pointer;
      transition:.25s ease; box-shadow:none;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#5a8dff);color:#fff;box-shadow:var(--shadow2)}
    .btn-primary:hover{transform:translateY(-2px);filter:saturate(1.05)}
    .btn-ghost{background:#fff;border:1px solid var(--line);color:var(--text)}
    .btn-ghost:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
    main{overflow:hidden}
    section{padding:64px 0}
    .hero{padding:42px 0 54px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch}
    .hero-card{
      background:
        linear-gradient(135deg, rgba(255,255,255,.95), rgba(255,250,242,.95)),
        linear-gradient(135deg, rgba(47,107,255,.04), rgba(255,122,89,.04));
      border:1px solid rgba(230,221,207,.8);
      border-radius:28px;
      box-shadow:var(--shadow);
      padding:34px;
      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:180px;height:180px;background:radial-gradient(circle, rgba(47,107,255,.18), transparent 68%);right:-50px;top:-40px}
    .hero-card::after{width:220px;height:220px;background:radial-gradient(circle, rgba(255,122,89,.14), transparent 65%);left:-70px;bottom:-80px}
    .kicker{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eef4ff;color:#2447a8;font-weight:700;font-size:13px}
    h1{font-size:clamp(32px,5vw,54px);line-height:1.08;margin:18px 0 16px}
    .lead{font-size:17px;line-height:1.8;color:#334155;max-width:60ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
    .mini-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}
    .metric{background:rgba(255,255,255,.75);border:1px solid rgba(230,221,207,.9);border-radius:18px;padding:16px}
    .metric strong{display:block;font-size:22px;margin-bottom:6px}
    .metric span{display:block;font-size:13px;color:var(--muted);line-height:1.55}
    .hero-aside{
      display:grid;gap:14px;
      grid-template-rows:auto auto 1fr;
    }
    .side-panel,.card{
      background:rgba(255,255,255,.9);
      border:1px solid rgba(230,221,207,.86);
      border-radius:22px;
      box-shadow:var(--shadow);
      padding:22px;
    }
    .side-panel h3,.section-title h2{margin:0 0 10px;font-size:28px;line-height:1.2}
    .side-panel p,.card p,.text-muted{color:var(--muted);line-height:1.75}
    .stat-row{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:16px}
    .stat-box{padding:16px;border-radius:18px;background:linear-gradient(180deg,#fff,#f9fbff);border:1px solid #edf2f7}
    .stat-box b{display:block;font-size:20px;margin-bottom:6px}
    .pill-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .pill{padding:9px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#344054}
    .section-title{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:24px}
    .section-title .intro{max-width:66ch;color:var(--muted);line-height:1.8}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .icon-card{
      background:linear-gradient(180deg, #fff, #fffaf5);
      border:1px solid rgba(230,221,207,.88);
      border-radius:22px;
      padding:22px;
      box-shadow:var(--shadow);
      transition:.25s ease;
    }
    .icon-card:hover{transform:translateY(-4px);box-shadow:var(--shadow2)}
    .icon{
      width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
      background:linear-gradient(135deg, rgba(47,107,255,.12), rgba(255,122,89,.12));
      color:var(--brand);font-weight:900;margin-bottom:14px
    }
    .icon-card h3{margin:0 0 8px;font-size:18px}
    .icon-card ul{margin:12px 0 0;padding-left:18px;color:#475467;line-height:1.8}
    .split{
      display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:start
    }
    .timeline{display:grid;gap:14px}
    .step{display:flex;gap:14px;align-items:flex-start;padding:18px;border:1px solid var(--line);border-radius:18px;background:#fff}
    .step .num{width:36px;height:36px;border-radius:12px;background:#eef4ff;color:#2146a8;display:grid;place-items:center;font-weight:800;flex:0 0 auto}
    .compare-wrap{overflow:auto;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:860px}
    th,td{padding:16px 14px;border-bottom:1px solid #edf2f7;text-align:left;vertical-align:top}
    th{background:#fafcff;color:#1f2a37;font-size:14px}
    td{color:#334155;line-height:1.7}
    .badge{display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;font-size:12px;font-weight:700}
    .badge.good{background:#e8fff6;color:#067647}
    .badge.warn{background:#fff3e8;color:#b54708}
    .badge.brand{background:#eef4ff;color:#2447a8}
    .review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:var(--shadow)}
    .review .who{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px}
    .stars{color:#f59e0b;letter-spacing:2px}
    .faq{display:grid;gap:12px}
    details{
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 18px;box-shadow:var(--shadow);
    }
    summary{cursor:pointer;font-weight:700;color:#1f2a37;list-style:none}
    summary::-webkit-details-marker{display:none}
    details p{margin:12px 0 0;color:var(--muted);line-height:1.8}
    .articles{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .article{
      display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow)
    }
    .thumb{width:120px;min-width:120px;aspect-ratio:1/1;border-radius:16px;overflow:hidden;background:#f2f4f7;border:1px solid #edf2f7}
    .thumb img{width:100%;height:100%;object-fit:cover}
    .article h3{margin:0 0 8px;font-size:17px}
    .article p{margin:0;color:var(--muted);line-height:1.7}
    form{
      display:grid;grid-template-columns:repeat(2,1fr);gap:14px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow)
    }
    label{display:block;font-size:14px;font-weight:700;margin-bottom:8px;color:#334155}
    input,select,textarea{
      width:100%;border:1px solid #d6dee8;border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:#1f2a37;outline:none;
    }
    input:focus,select:focus,textarea:focus{border-color:#8bb0ff;box-shadow:0 0 0 4px rgba(47,107,255,.1)}
    textarea{min-height:120px;resize:vertical}
    .span-2{grid-column:span 2}
    .footer{
      background:#10203a;color:#dbe7ff;padding:30px 0 22px;margin-top:0
    }
    .footer a{color:#fff}
    .footer .muted{color:#bfd0ef}
    .footer-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:20px;align-items:start}
    .footer .links{display:flex;flex-wrap:wrap;gap:10px}
    .footer .links a{padding:8px 10px;border-radius:10px;background:rgba(255,255,255,.07)}
    .footer-bottom{margin-top:18px;padding-top:16px;border-top:1px solid rgba(219,231,255,.18);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px}
    .float-tools{
      position:fixed;right:16px;bottom:18px;z-index:60;display:grid;gap:10px
    }
    .float-tools a,.float-tools button{
      width:48px;height:48px;border-radius:16px;border:none;display:grid;place-items:center;
      background:#fff;box-shadow:var(--shadow2);color:var(--brand);cursor:pointer
    }
    .mobile-only{display:none}
    .reveal{opacity:0;transform:translateY(18px);transition:.6s ease}
    .reveal.show{opacity:1;transform:none}
    .about-list{display:grid;gap:12px;margin-top:16px}
    .about-item{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .about-item b{display:block;margin-bottom:4px}
    .pricing{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .price-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow)}
    .price-card .value{font-size:30px;font-weight:900;color:var(--brand)}
    .price-card ul{margin:14px 0 0;padding-left:18px;color:#475467;line-height:1.8}
    .tags{display:flex;flex-wrap:wrap;gap:10px}
    .tags span{padding:8px 12px;border-radius:999px;background:#fff;border:1px dashed #cad6e6;color:#334155;font-size:13px}
    .service-network{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .network-item{padding:18px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .network-item b{display:block;margin-bottom:8px}
    .tab-note{background:linear-gradient(135deg,#eef4ff,#fff7ef);border:1px solid rgba(47,107,255,.12);padding:18px;border-radius:18px}
    @media (max-width: 980px){
      .hero-grid,.split,.grid-3,.grid-4,.review-grid,.articles,.pricing,.service-network,.footer-grid{grid-template-columns:1fr}
      .mini-metrics{grid-template-columns:1fr}
      .section-title{align-items:flex-start;flex-direction:column}
      form{grid-template-columns:1fr}
      .span-2{grid-column:span 1}
      .nav-toggle{display:inline-grid}
      .nav{display:none;position:absolute;left:16px;right:16px;top:68px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:var(--shadow);justify-content:flex-start}
      .nav.open{display:flex}
      .mobile-only{display:inline-flex}
      .desktop-only{display:none}
    }