:root{
      --brand:#0b5cab;
      --brand-dark:#083d74;
      --ink:#102033;
      --muted:#516173;
      --line:#d8e2ee;
      --soft:#f4f8fc;
      --soft2:#eef5fb;
      --card:#ffffff;
      --accent:#e8f2ff;
      --ok:#0a7c52;
      --warn:#a85a00;
      --shadow:0 10px 28px rgba(10,32,60,.08);
      --radius:18px;
      --max:1140px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Arial,Helvetica,sans-serif;
      color:var(--ink);
      background:linear-gradient(180deg,#f6f9fc 0%, #ffffff 180px);
      line-height:1.75;
    }
    a{color:var(--brand);text-decoration:none}
    a:hover{text-decoration:underline}
    .wrap{max-width:var(--max);margin:0 auto;padding:0 20px 64px}
    .hero{
      background:linear-gradient(135deg,#0b5cab 0%,#083d74 100%);
      color:#fff;
      padding:54px 0 38px;
      margin-bottom:28px;
    }
    .hero .inner{max-width:var(--max);margin:0 auto;padding:0 20px}
    .eyebrow{
      display:inline-block;
      font-size:13px;
      letter-spacing:.08em;
      text-transform:uppercase;
      padding:8px 12px;
      border:1px solid rgba(255,255,255,.28);
      border-radius:999px;
      margin-bottom:16px;
      background:rgba(255,255,255,.08);
    }
    h1,h2,h3{line-height:1.25;color:var(--ink)}
    .hero h1{
      color:#fff;
      font-size:clamp(32px,4.4vw,50px);
      margin:0 0 14px;
      max-width:980px;
    }
    .hero p{
      max-width:930px;
      margin:0 0 18px;
      color:rgba(255,255,255,.93);
      font-size:18px;
    }
    .cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}
    .btn{
      display:inline-block;
      padding:12px 18px;
      border-radius:999px;
      font-weight:700;
      border:1px solid transparent;
    }
    .btn.primary{background:#fff;color:var(--brand-dark)}
    .btn.secondary{background:transparent;color:#fff;border-color:rgba(255,255,255,.38)}
    .layout{
      display:grid;
      grid-template-columns:280px minmax(0,1fr);
      gap:28px;
      align-items:start;
    }
    .toc{
      position:sticky;
      top:20px;
      background:var(--card);
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      padding:18px 18px 14px;
    }
    .toc h2{
      font-size:18px;
      margin:0 0 10px;
    }
    .toc ol{
      margin:0;
      padding-left:18px;
    }
    .toc li{margin:8px 0;color:var(--muted)}
    .article{
      min-width:0;
    }
    .card{
      background:var(--card);
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      padding:28px;
      margin-bottom:24px;
    }
    .lede{
      font-size:18px;
      color:#213244;
    }
    h2.section-title{
      font-size:30px;
      margin:0 0 16px;
    }
    h3{
      font-size:22px;
      margin:28px 0 10px;
    }
    p{margin:0 0 16px}
    ul,ol{padding-left:22px;margin:0 0 18px}
    li{margin:7px 0}
    .spec-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:14px;
      margin:18px 0 4px;
    }
    .spec-item{
      border:1px solid var(--line);
      background:var(--soft);
      border-radius:14px;
      padding:14px 15px;
    }
    .spec-item strong{display:block;color:var(--brand-dark);margin-bottom:4px}
    .notice{
      border-left:4px solid var(--warn);
      background:#fff8ef;
      padding:14px 16px;
      border-radius:10px;
      margin:18px 0;
    }
    .goodfit{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:14px;
      margin:18px 0 6px;
    }
    .goodfit .box{
      border:1px solid var(--line);
      border-radius:14px;
      padding:16px;
      background:linear-gradient(180deg,#ffffff 0%,#f8fbff 100%);
    }
    .goodfit .box h3{
      font-size:18px;
      margin:0 0 8px;
      color:var(--brand-dark);
    }
    figure{
      margin:24px 0;
      border:1px solid var(--line);
      background:linear-gradient(180deg,#ffffff 0%,#f7fbff 100%);
      border-radius:18px;
      padding:16px;
    }
    figcaption{
      font-size:14px;
      color:var(--muted);
      margin-top:12px;
    }
    .checklist{
      background:var(--soft2);
      border:1px solid var(--line);
      border-radius:16px;
      padding:18px;
      margin:20px 0;
    }
    .table-wrap{overflow-x:auto}
    table{
      width:100%;
      border-collapse:collapse;
      margin:14px 0 6px;
      font-size:15px;
    }
    th,td{
      border:1px solid var(--line);
      padding:12px 13px;
      text-align:left;
      vertical-align:top;
    }
    th{
      background:#edf5ff;
      color:var(--brand-dark);
    }
    .faq details{
      border:1px solid var(--line);
      border-radius:14px;
      padding:14px 16px;
      margin:12px 0;
      background:#fff;
    }
    .faq summary{
      cursor:pointer;
      font-weight:700;
      color:var(--brand-dark);
    }
    .faq p{margin:12px 0 0}
    .cta-panel{
      background:linear-gradient(135deg,#083d74 0%, #0b5cab 100%);
      color:#fff;
      border-radius:22px;
      padding:28px;
    }
    .cta-panel h2,.cta-panel h3{color:#fff}
    .cta-panel p,.cta-panel li{color:rgba(255,255,255,.93)}
    .mini{
      font-size:14px;
      color:var(--muted);
    }
    .badge{
      display:inline-block;
      font-size:12px;
      font-weight:700;
      color:var(--ok);
      background:#ebfff5;
      border:1px solid #c9efd8;
      border-radius:999px;
      padding:6px 10px;
      margin-bottom:12px;
      letter-spacing:.03em;
      text-transform:uppercase;
    }
    @media (max-width: 980px){
      .layout{grid-template-columns:1fr}
      .toc{position:static}
      .goodfit,.spec-grid{grid-template-columns:1fr}
    }