:root{
      --bg:#f7f9fc;
      --panel:#ffffff;
      --panel-2:#f3f7ff;
      --text:#1d2733;
      --muted:#5f6b7a;
      --line:#dbe4f0;
      --brand:#355cff;
      --brand-2:#21c7b7;
      --brand-3:#ff8f4d;
      --shadow:0 18px 40px rgba(25, 47, 92, .10);
      --radius:22px;
      --radius-sm:16px;
      --max:1200px;
    }
    *{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(53,92,255,.10), transparent 30%),
        radial-gradient(circle at right 10%, rgba(33,199,183,.10), transparent 24%),
        linear-gradient(180deg,#ffffff 0%, #f6f8fc 38%, #f7f9fc 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:50;
      backdrop-filter: blur(14px);
      background:rgba(247,249,252,.82);
      border-bottom:1px solid rgba(219,228,240,.8);
    }
    .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 .mark{width:44px;height:44px;border-radius:14px;background:#fff;box-shadow:var(--shadow);display:grid;place-items:center;overflow:hidden;border:1px solid var(--line)}
    .brand .name{font-weight:800;font-size:18px;line-height:1.1}
    .brand .sub{font-size:12px;color:var(--muted);margin-top:3px}
    .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:10px 12px;border-radius:999px;font-size:14px;cursor:pointer
    }
    .nav-links a:hover,.nav-links button:hover{background:#fff;border-color:var(--line);box-shadow:0 10px 24px rgba(25,47,92,.08)}
    .menu-btn{display:none;border:1px solid var(--line);background:#fff;border-radius:14px;padding:10px 12px;cursor:pointer}
    .hero{
      padding:34px 0 26px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:22px;align-items:stretch
    }
    .hero-card{
      background:
        linear-gradient(135deg, rgba(53,92,255,.10), rgba(33,199,183,.08) 42%, rgba(255,143,77,.08)),
        #fff;
      border:1px solid rgba(219,228,240,.9);
      border-radius:28px;
      padding:30px;
      box-shadow:var(--shadow);
      position:relative;
      overflow:hidden;
    }
    .hero-card:before,.hero-card:after{
      content:"";position:absolute;border-radius:999px;filter:blur(12px);opacity:.85
    }
    .hero-card:before{width:160px;height:160px;background:rgba(53,92,255,.12);right:-30px;top:-30px}
    .hero-card:after{width:120px;height:120px;background:rgba(33,199,183,.12);left:-20px;bottom:-20px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:13px;color:#355cff;font-weight:700}
    h1{margin:16px 0 12px;font-size:clamp(30px, 5vw, 54px);line-height:1.05;letter-spacing:-.03em}
    .hero p{margin:0;color:var(--muted);font-size:16px;line-height:1.8;max-width:58ch}
    .cta-row{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:16px;font-weight:700;border:1px solid transparent;transition:.2s ease;
      box-shadow:0 10px 22px rgba(53,92,255,.12)
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#6a7cff);color:#fff}
    .btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
    .btn:hover{transform:translateY(-2px)}
    .hero-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
    .mini{
      background:rgba(255,255,255,.88);border:1px solid rgba(219,228,240,.9);border-radius:18px;padding:16px
    }
    .mini strong{display:block;font-size:20px;margin-bottom:4px}
    .mini span{color:var(--muted);font-size:13px;line-height:1.5}
    .hero-side{
      display:grid;gap:14px
    }
    .side-card{
      background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:20px;box-shadow:var(--shadow)
    }
    .side-card h3{margin:0 0 10px;font-size:18px}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag-cloud span{padding:9px 12px;border-radius:999px;background:var(--panel-2);border:1px solid #dfe7f6;font-size:13px;color:#29415f}
    .section{padding:18px 0 28px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:clamp(22px,3vw,32px)}
    .section-head p{margin:0;color:var(--muted);max-width:58ch;line-height:1.7}
    .grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
    .card{
      background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:0 10px 24px rgba(25,47,92,.06);
      transition:.22s ease
    }
    .card:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(25,47,92,.12)}
    .card h3{margin:0 0 10px;font-size:18px}
    .card p, .card li{color:var(--muted);line-height:1.75}
    .stat{font-size:30px;font-weight:800;color:#20304a}
    .stat small{font-size:13px;color:#5f6b7a;font-weight:600}
    .workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .step{position:relative;padding-top:20px}
    .step:before{
      content:attr(data-step);position:absolute;top:-10px;left:18px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;
      width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-weight:800;box-shadow:0 10px 20px rgba(53,92,255,.18)
    }
    .table-wrap{overflow:auto;border-radius:20px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
    table{width:100%;border-collapse:collapse;min-width:820px}
    th,td{padding:16px 14px;border-bottom:1px solid #e8eef7;text-align:left;vertical-align:top}
    th{background:#f5f8ff;color:#24354e;font-size:14px}
    td{color:var(--muted)}
    .rating{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .stars{color:#ffb400;font-size:18px;letter-spacing:2px}
    .compare-hero{
      background:linear-gradient(135deg,#fff, #f4f8ff);
      border:1px solid var(--line);border-radius:24px;padding:22px;display:grid;gap:14px
    }
    .compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .score-box{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px}
    .list{margin:0;padding-left:18px}
    .list li{margin:8px 0}
    .case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .case{
      padding:18px;border-radius:22px;border:1px solid var(--line);background:linear-gradient(180deg,#fff, #f7fbff)
    }
    .case .label{display:inline-block;padding:6px 10px;border-radius:999px;background:#eef4ff;color:#355cff;font-size:12px;font-weight:700;margin-bottom:12px}
    details{
      background:#fff;border:1px solid var(--line);border-radius:18px;padding:0 18px;box-shadow:0 10px 22px rgba(25,47,92,.05)
    }
    details+details{margin-top:12px}
    summary{cursor:pointer;list-style:none;padding:16px 0;font-weight:700}
    summary::-webkit-details-marker{display:none}
    details p{margin:0 0 16px;color:var(--muted);line-height:1.8}
    .testimonial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .quote{position:relative}
    .quote:before{content:"“";font-size:44px;line-height:1;color:#dfe8fb;position:absolute;right:16px;top:10px;font-weight:800}
    .quote .role{color:#355cff;font-size:13px;font-weight:700;margin-bottom:10px}
    .news-list{display:grid;grid-template-columns:1.2fr .8fr;gap:14px}
    .article-list{display:grid;gap:10px}
    .article-list a{
      display:flex;justify-content:space-between;gap:12px;padding:14px 16px;border-radius:16px;background:#fff;border:1px solid var(--line)
    }
    .article-list a:hover{border-color:#bcd0ff;box-shadow:0 10px 24px rgba(25,47,92,.08)}
    .form{
      display:grid;grid-template-columns:repeat(2,1fr);gap:12px
    }
    .field{display:grid;gap:8px}
    .field.full{grid-column:1/-1}
    label{font-weight:700;font-size:14px}
    input,select,textarea{
      width:100%;border:1px solid #d8e1ef;border-radius:14px;padding:13px 14px;font:inherit;background:#fff;color:var(--text)
    }
    textarea{min-height:120px;resize:vertical}
    .submit-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:4px}
    footer{
      margin-top:8px;
      background:#eef3fb;
      color:#23344d;
      border-top:1px solid #d5deea;
      padding:26px 0 20px
    }
    footer a{color:#2447c7}
    .footer-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}
    .footer-mini{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
    .footer-mini a{padding:8px 12px;border-radius:999px;background:#fff;border:1px solid #dbe4f0}
    .float-box{
      position:fixed;right:16px;bottom:16px;z-index:60;display:grid;gap:10px
    }
    .float-box a,.float-box button{
      display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 14px;border-radius:14px;border:1px solid rgba(219,228,240,.95);
      background:#fff;box-shadow:var(--shadow);font-weight:700;cursor:pointer
    }
    .toc-mobile{display:none}
    .reveal{opacity:0;transform:translateY(16px);transition:.55s ease}
    .reveal.in{opacity:1;transform:translateY(0)}
    .service-network{display:flex;flex-wrap:wrap;gap:10px}
    .service-network span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:10px 12px;color:#42556f}
    @media (max-width: 980px){
      .hero-grid,.grid-4,.grid-3,.grid-2,.workflow,.case-grid,.testimonial-grid,.news-list,.footer-grid,.compare-grid{grid-template-columns:1fr}
      .hero-meta{grid-template-columns:1fr}
      .nav-links{display:none}
      .menu-btn{display:inline-flex}
      .toc-mobile{display:block}
      .nav.open .nav-links{display:flex;position:absolute;left:16px;right:16px;top:72px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:10px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
      .nav.open .nav-links a,.nav.open .nav-links button{text-align:left}
    }