:root{
      --bg:#f7f8fc;
      --panel:#ffffff;
      --panel-2:#f3f7ff;
      --text:#1f2937;
      --muted:#5b6474;
      --line:#dbe3f0;
      --brand:#2f6df6;
      --brand2:#12b3c7;
      --accent:#ff8a4c;
      --shadow:0 16px 40px rgba(30, 63, 124, .10);
      --radius:22px;
      --radius-sm:16px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(47,109,246,.12), transparent 28%),
        radial-gradient(circle at top right, rgba(18,179,199,.10), transparent 24%),
        linear-gradient(180deg, #ffffff 0%, #f7f8fc 18%, #f7f8fc 100%);
      line-height:1.65;
    }
    a{color:var(--brand);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(160%) blur(14px);
      background:rgba(255,255,255,.82);
      border-bottom:1px solid rgba(219,227,240,.85);
    }
    .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:10px;background:#fff;border:1px solid var(--line);padding:4px}
    .brand strong{display:block;font-size:16px;line-height:1.15}
    .brand span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
    .nav-links{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a,.nav-links button{
      border:1px solid transparent;background:transparent;color:var(--text);
      padding:8px 12px;border-radius:999px;font-size:14px;cursor:pointer;transition:.25s ease;
    }
    .nav-links a:hover,.nav-links button:hover{background:#eef4ff;color:#2458d6;border-color:#d9e5ff}
    .nav-cta{
      background:linear-gradient(135deg,var(--brand),#6f8ff8)!important;color:#fff!important;
      box-shadow:0 10px 24px rgba(47,109,246,.22);
    }
    .nav-toggle{display:none}
    .hero{
      position:relative;
      padding:34px 0 18px;
      overflow:hidden;
    }
    .hero::before,.hero::after{
      content:"";position:absolute;border-radius:50%;pointer-events:none;filter:blur(2px);
      background:radial-gradient(circle, rgba(47,109,246,.16), rgba(47,109,246,0) 64%);
      animation:float 10s ease-in-out infinite;
    }
    .hero::before{width:280px;height:280px;right:-80px;top:30px}
    .hero::after{width:220px;height:220px;left:-80px;bottom:0;animation-delay:-4s}
    @keyframes float{50%{transform:translateY(14px) scale(1.03)}}
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:stretch;
    }
    .hero-main,.hero-side,.panel,.card,.faq-item,.review,.case,.pricing,.compare,.form-wrap,.info-box{
      background:var(--panel);border:1px solid rgba(219,227,240,.9);border-radius:var(--radius);box-shadow:var(--shadow);
    }
    .hero-main{padding:34px}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      background:linear-gradient(135deg, rgba(47,109,246,.10), rgba(18,179,199,.12));
      color:#2458d6;border:1px solid rgba(47,109,246,.15);
      padding:7px 12px;border-radius:999px;font-size:13px;font-weight:600;
    }
    h1{margin:16px 0 14px;font-size:clamp(30px,4.6vw,54px);line-height:1.08;letter-spacing:-.02em}
    .hero p{margin:0;color:var(--muted);font-size:16px;max-width:62ch}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:13px 18px;border-radius:14px;font-weight:700;border:1px solid transparent;
      transition:.25s ease;cursor:pointer;font-size:15px;
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#6f8ff8);color:#fff;box-shadow:0 12px 24px rgba(47,109,246,.2)}
    .btn-secondary{background:#fff;color:#234; border-color:var(--line)}
    .btn:hover{transform:translateY(-2px)}
    .hero-points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}
    .mini{
      padding:14px;border-radius:18px;background:linear-gradient(180deg,#fff 0%,#f8fbff 100%);
      border:1px solid #e4ebf7;
    }
    .mini strong{display:block;font-size:18px}
    .mini span{font-size:13px;color:var(--muted)}
    .hero-side{padding:18px;background:linear-gradient(180deg,#f8fbff 0%,#fff 100%)}
    .hero-side .panel{padding:18px;border-radius:18px;box-shadow:none;background:rgba(255,255,255,.78)}
    .side-list{display:grid;gap:10px;margin:12px 0 0;padding:0;list-style:none}
    .side-list li{display:flex;gap:10px;align-items:flex-start;color:var(--text);font-size:14px}
    .dot{width:10px;height:10px;border-radius:50%;margin-top:7px;background:linear-gradient(135deg,var(--brand2),var(--brand))}
    .section{padding:22px 0}
    .section h2{margin:0 0 12px;font-size:clamp(24px,3vw,34px);line-height:1.15}
    .section p.lead{margin:0 0 18px;color:var(--muted);max-width:72ch}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .card,.review,.case,.pricing,.compare,.form-wrap,.info-box,.faq-item{padding:20px}
    .card h3,.review h3,.case h3,.pricing h3,.info-box h3{margin:0 0 8px;font-size:18px}
    .muted{color:var(--muted)}
    .chip-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .chip{padding:8px 12px;border-radius:999px;background:#eef4ff;border:1px solid #dbe7ff;color:#214fbd;font-size:13px}
    .timeline{display:grid;gap:12px}
    .step{display:grid;grid-template-columns:44px 1fr;gap:12px;align-items:flex-start;padding:14px;border-radius:18px;background:#fff;border:1px solid var(--line)}
    .num{
      width:44px;height:44px;border-radius:14px;display:grid;place-items:center;font-weight:800;color:#fff;
      background:linear-gradient(135deg,var(--brand),var(--brand2));
      box-shadow:0 10px 20px rgba(47,109,246,.18);
    }
    .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 #edf1f7;text-align:left;font-size:14px;vertical-align:top}
    th{background:#f6f9ff;color:#19315d}
    tr:hover td{background:#fbfdff}
    .rating{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
    .stars{color:#ffb400;font-size:18px;letter-spacing:2px}
    details{
      border-top:1px solid #edf1f7;padding-top:14px;margin-top:14px
    }
    details:first-of-type{border-top:none;padding-top:0;margin-top:0}
    summary{cursor:pointer;font-weight:700;list-style:none}
    summary::-webkit-details-marker{display:none}
    .faq-item p{margin:10px 0 0;color:var(--muted)}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .review{position:relative;overflow:hidden}
    .review::before{
      content:"“";position:absolute;right:14px;top:-12px;font-size:88px;color:rgba(47,109,246,.08);font-weight:900;
    }
    .review .who{margin-top:14px;font-size:13px;color:#49607f}
    .case-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .case{background:linear-gradient(180deg,#fff 0%,#f9fbff 100%)}
    .case ul{margin:12px 0 0;padding-left:18px;color:var(--muted)}
    .articles{display:grid;gap:12px}
    .article{
      display:flex;justify-content:space-between;gap:16px;align-items:flex-start;
      padding:16px 18px;border-radius:16px;background:#fff;border:1px solid var(--line);transition:.25s ease
    }
    .article:hover{transform:translateY(-2px);box-shadow:0 14px 26px rgba(30,63,124,.08)}
    .article span{color:var(--muted);font-size:13px;white-space:nowrap}
    .tagline{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    .price{
      background:linear-gradient(180deg,#fff 0%,#f5f9ff 100%);
      border:1px solid #dfe8f8;border-radius:18px;padding:16px
    }
    .price strong{font-size:20px}
    .contact-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:16px;align-items:start}
    .contact-box{display:grid;gap:12px}
    .contact-item{padding:14px 16px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .form{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
    .form .full{grid-column:1/-1}
    input,select,textarea{
      width:100%;border:1px solid #d9e2f0;background:#fff;border-radius:14px;padding:13px 14px;
      color:var(--text);font:inherit;outline:none;transition:.2s ease
    }
    input:focus,select:focus,textarea:focus{border-color:#7aa2ff;box-shadow:0 0 0 4px rgba(47,109,246,.10)}
    textarea{min-height:118px;resize:vertical}
    .footer{
      margin-top:14px;padding:24px 0 32px;background:#f4f7fc;border-top:1px solid #dbe3f0;color:#354255
    }
    .footer a{color:#2458d6}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:18px}
    .footer small{color:#667084}
    .floating{
      position:fixed;right:16px;bottom:16px;display:grid;gap:10px;z-index:60
    }
    .float-btn{
      width:52px;height:52px;border:none;border-radius:16px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 14px 28px rgba(47,109,246,.28);
      cursor:pointer
    }
    .float-panel{
      width:min(320px, calc(100vw - 32px));background:#fff;border:1px solid var(--line);border-radius:20px;
      box-shadow:var(--shadow);padding:14px;display:none
    }
    .float-panel.open{display:block}
    .float-panel img{border-radius:12px;border:1px solid var(--line);background:#fff}
    .anchor{scroll-margin-top:88px}
    .scroll-enter{opacity:0;transform:translateY(18px);transition:opacity .55s ease, transform .55s ease}
    .scroll-enter.in-view{opacity:1;transform:none}
    .mobile-only{display:none}
    @media (max-width: 1060px){
      .hero-grid,.contact-grid,.footer-grid,.grid-4,.reviews,.case-list,.grid-3,.grid-2,.tagline{grid-template-columns:1fr 1fr}
      .tagline{grid-template-columns:repeat(3,1fr)}
    }
    @media (max-width: 760px){
      .nav{flex-wrap:wrap}
      .nav-toggle{display:inline-flex}
      .nav-links{display:none;width:100%;justify-content:flex-start;padding-top:8px}
      .nav-links.open{display:flex}
      .hero-grid,.contact-grid,.footer-grid,.grid-4,.reviews,.case-list,.grid-3,.grid-2,.tagline,.hero-points{grid-template-columns:1fr}
      .hero-main{padding:24px}
      .section{padding:18px 0}
      .form{grid-template-columns:1fr}
      .mobile-only{display:block}
    }