:root{
      --bg:#f7f8fc;
      --panel:#ffffff;
      --panel-2:#f1f5ff;
      --line:#dce4f4;
      --text:#122033;
      --muted:#5b687d;
      --brand:#2f6bff;
      --brand-2:#ff4fa0;
      --brand-3:#14c7b3;
      --warm:#ffb347;
      --shadow:0 18px 48px rgba(18,32,51,.10);
      --radius:20px;
      --radius-sm:14px;
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family: -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(47,107,255,.10), transparent 32%),
        radial-gradient(circle at top right, rgba(255,79,160,.10), transparent 28%),
        linear-gradient(180deg, #ffffff 0%, #f8fbff 30%, #f6f8fc 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{width:min(var(--max), calc(100% - 32px)); margin:0 auto}
    header{
      position:sticky;top:0;z-index:40;
      background:rgba(247,248,252,.85);
      backdrop-filter:saturate(140%) blur(16px);
      border-bottom:1px solid rgba(220,228,244,.8);
    }
    .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;padding:4px;border:1px solid var(--line)}
    .brand h2{margin:0;font-size:18px;line-height:1.1}
    .brand p{margin:4px 0 0;color:var(--muted);font-size:12px}
    nav{display:flex;align-items:center;gap:12px}
    .nav-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:var(--muted);padding:8px 10px;border-radius:999px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{color:var(--text);background:#eef3ff}
    .menu-btn{
      display:none;border:1px solid var(--line);background:var(--panel);color:var(--text);
      border-radius:12px;padding:10px 12px;box-shadow:var(--shadow);cursor:pointer
    }
    .hero{padding:34px 0 10px}
    .hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:22px;align-items:stretch}
    .hero-card,.side-card,.card,.panel{background:rgba(255,255,255,.88);border:1px solid rgba(220,228,244,.95);box-shadow:var(--shadow);border-radius:var(--radius)}
    .hero-card{padding:28px;position:relative;overflow:hidden}
    .hero-card:before,.hero-card:after{
      content:"";position:absolute;border-radius:999px;filter:blur(8px);opacity:.9;pointer-events:none
    }
    .hero-card:before{width:170px;height:170px;background:rgba(47,107,255,.14);right:-30px;top:-40px}
    .hero-card:after{width:120px;height:120px;background:rgba(255,79,160,.12);right:120px;bottom:-30px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#eef4ff;color:#2050d6;font-weight:700;font-size:13px}
    h1{margin:16px 0 12px;font-size:clamp(30px,4vw,52px);line-height:1.08;letter-spacing:-.03em}
    .lead{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:60ch}
    .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:12px 18px;border-radius:14px;border:1px solid transparent;font-weight:700;
      transition:.22s ease;cursor:pointer
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#6a7cff);color:#fff;box-shadow:0 14px 26px rgba(47,107,255,.22)}
    .btn-secondary{background:#fff;color:var(--text);border-color:var(--line)}
    .btn-accent{background:linear-gradient(135deg,var(--brand-2),#ff7b4a);color:#fff}
    .btn:hover{transform:translateY(-2px);filter:saturate(1.05)}
    .metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:24px}
    .metric{background:linear-gradient(180deg,#fff, #f7faff);border:1px solid var(--line);border-radius:16px;padding:16px;min-height:108px}
    .metric strong{display:block;font-size:26px;line-height:1;color:var(--text)}
    .metric span{display:block;margin-top:8px;color:var(--muted);font-size:13px;line-height:1.5}
    .side-card{padding:20px}
    .side-card h3,.section-head h2{margin:0 0 10px;font-size:26px}
    .side-card p{margin:0;color:var(--muted);line-height:1.75}
    .mini-list{display:grid;gap:10px;margin-top:16px}
    .mini-item{display:flex;gap:10px;align-items:flex-start;padding:12px;border-radius:14px;background:#f7f9ff;border:1px solid var(--line)}
    .dot{width:10px;height:10px;border-radius:50%;margin-top:6px;background:linear-gradient(135deg,var(--brand),var(--brand-2))}
    main{padding:16px 0 40px}
    section{padding:26px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head p{margin:0;color:var(--muted);line-height:1.7;max-width:72ch}
    .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,.panel{padding:18px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:9px 12px;border-radius:999px;background:#eef4ff;color:#2b4fad;border:1px solid #d9e4ff;font-size:13px}
    .service-card h3,.case-card h3,.content-card h3,.review-card h3{margin:0 0 10px;font-size:18px}
    .service-card p,.case-card p,.content-card p,.review-card p{margin:0;color:var(--muted);line-height:1.75}
    .service-card{position:relative;overflow:hidden}
    .service-card:after{content:"";position:absolute;inset:auto -24px -24px auto;width:110px;height:110px;border-radius:30px;background:linear-gradient(135deg, rgba(47,107,255,.12), rgba(255,79,160,.12));transform:rotate(18deg)}
    .step-list{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{padding:18px;border-radius:18px;background:linear-gradient(180deg,#fff,#f6f9ff);border:1px solid var(--line)}
    .step b{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;margin-bottom:12px}
    .compare-wrap{overflow:auto;border-radius:18px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:780px}
    th,td{padding:16px 14px;border-bottom:1px solid #edf1f7;text-align:left;vertical-align:top}
    th{background:#f4f7ff;color:#23314a;font-size:14px}
    td{color:var(--text);font-size:14px;line-height:1.7}
    .score{font-weight:800;color:#1d4ed8}
    .two-col{display:grid;grid-template-columns:1.05fr .95fr;gap:16px;align-items:start}
    .form{
      display:grid;grid-template-columns:repeat(2,1fr);gap:14px
    }
    .field{display:flex;flex-direction:column;gap:8px}
    .field label{font-size:14px;font-weight:700;color:#21304c}
    .field input,.field select,.field textarea{
      width:100%;border:1px solid var(--line);border-radius:14px;padding:12px 14px;
      background:#fff;color:var(--text);outline:none;transition:.2s
    }
    .field textarea{min-height:120px;resize:vertical;grid-column:1/-1}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:#7aa2ff;box-shadow:0 0 0 4px rgba(47,107,255,.10)}
    .form-actions{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:12px;align-items:center}
    .faq details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px 16px;box-shadow:var(--shadow)}
    .faq{display:grid;gap:12px}
    summary{cursor:pointer;font-weight:700;list-style:none}
    summary::-webkit-details-marker{display:none}
    details p{margin:10px 0 0;color:var(--muted);line-height:1.75}
    .reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .stars{color:#f59e0b;letter-spacing:2px;font-size:15px}
    .timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
    .time-item{padding:16px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .footer-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    footer{padding:24px 0 28px;background:#eef3ff;border-top:1px solid #dbe5fb;color:#24324a}
    footer a{color:#274b9e}
    .footer-bottom{margin-top:16px;padding-top:16px;border-top:1px solid rgba(36,50,74,.12);display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;color:#4b5b74;font-size:13px}
    .floating{
      position:fixed;right:18px;bottom:18px;z-index:50;display:grid;gap:10px
    }
    .floating a,.floating button{
      border:none;cursor:pointer;text-align:center;
      background:linear-gradient(135deg,#1f6bff,#ff4fa0);color:#fff;
      padding:12px 14px;border-radius:16px;box-shadow:0 16px 28px rgba(31,107,255,.24);font-weight:700
    }
    .floating .ghost{background:#fff;color:var(--text);border:1px solid var(--line)}
    .kefu{
      display:grid;grid-template-columns:116px 1fr;gap:14px;align-items:center
    }
    .kefu img{width:116px;height:116px;object-fit:cover;border-radius:16px;border:1px solid var(--line);background:#fff}
    .article-list{display:grid;gap:12px}
    .article{display:flex;justify-content:space-between;gap:12px;padding:14px 16px;border-radius:16px;background:#fff;border:1px solid var(--line)}
    .article span{color:var(--muted);font-size:13px}
    .chips{display:flex;flex-wrap:wrap;gap:10px}
    .chip{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#3a4c6b}
    .image-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .image-grid img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#fff}
    .square-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .square-grid img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#fff}
    .hidden-mobile{display:block}
    @media (max-width: 980px){
      .hero-grid,.two-col,.grid-3,.reviews,.footer-grid,.grid-2,.image-grid,.square-grid,.timeline{grid-template-columns:1fr}
      .metric-grid,.step-list{grid-template-columns:repeat(2,1fr)}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:64px;padding:14px;background:rgba(255,255,255,.98);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
      .nav-links.open{display:flex;flex-direction:column;align-items:stretch}
      .nav-links a{background:#f6f8ff}
      .menu-btn{display:inline-flex}
      nav{position:relative}
      .form{grid-template-columns:1fr}
      .hidden-mobile{display:none}
    }
    .reveal{opacity:0;transform:translateY(16px);transition:opacity .7s ease, transform .7s ease}
    .reveal.show{opacity:1;transform:none}
    .subtle{
      color:var(--muted);font-size:13px
    }