:root {
      --brand:#0b5cab;
      --brand-dark:#083d74;
      --ink:#0f172a;
      --muted:#475569;
      --line:#dbe3ef;
      --bg:#f4f8fc;
      --card:#ffffff;
      --soft:#f8fbff;
      --accent:#eaf3ff;
      --ok:#0b8a5b;
      --warn:#b45309;
      --shadow:0 10px 30px rgba(15,23,42,.08);
      --radius:18px;
    }
    * { box-sizing:border-box; }
    html { scroll-behavior:smooth; }
    body {
      margin:0;
      font-family:Arial, Helvetica, sans-serif;
      color:var(--ink);
      background:var(--bg);
      line-height:1.75;
    }
    a { color:var(--brand); text-decoration:none; }
    a:hover { text-decoration:underline; }
    .wrap {
      max-width:1120px;
      margin:0 auto;
      padding:24px;
    }
    .hero {
      background:linear-gradient(135deg, #0b5cab 0%, #0f2f57 100%);
      color:#fff;
      border-radius:24px;
      padding:36px;
      box-shadow:var(--shadow);
    }
    .eyebrow {
      display:inline-block;
      padding:6px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.12);
      font-size:13px;
      letter-spacing:.08em;
      text-transform:uppercase;
      margin-bottom:12px;
    }
    h1, h2, h3 {
      line-height:1.25;
      scroll-margin-top:84px;
    }
    h1 {
      margin:0 0 14px;
      font-size:40px;
    }
    h2 {
      margin:40px 0 14px;
      font-size:30px;
      color:var(--brand-dark);
    }
    h3 {
      margin:28px 0 12px;
      font-size:22px;
      color:#153e75;
    }
    p { margin:0 0 16px; }
    .hero p {
      max-width:960px;
      color:rgba(255,255,255,.92);
      font-size:18px;
    }
    .cta-row {
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:22px;
    }
    .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,.35);
    }
    .toc {
      margin:28px 0 10px;
      background:var(--card);
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      padding:24px;
    }
    .toc h2 {
      margin:0 0 12px;
      font-size:24px;
    }
    .toc ol {
      margin:0;
      padding-left:18px;
      columns:2;
      column-gap:28px;
    }
    .toc li {
      margin:0 0 8px;
      break-inside:avoid;
    }
    .section-card {
      background:var(--card);
      border:1px solid var(--line);
      border-radius:var(--radius);
      box-shadow:var(--shadow);
      padding:30px;
      margin-top:24px;
    }
    .compare-grid {
      display:grid;
      grid-template-columns:repeat(2, minmax(0,1fr));
      gap:18px;
      margin:18px 0 10px;
    }
    .mini-card {
      background:var(--soft);
      border:1px solid var(--line);
      border-radius:18px;
      padding:22px;
    }
    .mini-card h3 {
      margin-top:0;
      font-size:24px;
    }
    .spec-table {
      width:100%;
      border-collapse:collapse;
      margin:18px 0;
      font-size:15px;
    }
    .spec-table th, .spec-table td {
      border:1px solid var(--line);
      padding:12px 14px;
      vertical-align:top;
      text-align:left;
    }
    .spec-table th {
      background:var(--accent);
      font-size:15px;
    }
    .note, .rfq-box, .faq-item {
      border-left:4px solid var(--brand);
      background:#f9fcff;
      padding:16px 18px;
      border-radius:12px;
      margin:18px 0;
    }
    .checklist {
      margin:10px 0 0;
      padding-left:20px;
    }
    .checklist li { margin-bottom:10px; }
    .img-wrap {
      margin:26px 0;
      background:#fff;
      border:1px solid var(--line);
      border-radius:20px;
      overflow:hidden;
      box-shadow:var(--shadow);
    }
    .img-wrap img {
      display:block;
      width:100%;
      height:auto;
      background:#fff;
    }
    .img-wrap figcaption {
      padding:14px 18px;
      color:var(--muted);
      font-size:14px;
      background:#fbfdff;
      border-top:1px solid var(--line);
    }
    .two-col {
      display:grid;
      grid-template-columns:1.2fr .8fr;
      gap:22px;
      align-items:start;
    }
    .signal-list {
      display:grid;
      grid-template-columns:repeat(2, minmax(0,1fr));
      gap:14px;
      margin:18px 0;
    }
    .signal {
      background:var(--soft);
      border:1px solid var(--line);
      border-radius:16px;
      padding:16px;
    }
    .cta-panel {
      margin-top:28px;
      background:linear-gradient(135deg, #eff7ff 0%, #ffffff 100%);
      border:1px solid var(--line);
      border-radius:20px;
      padding:26px;
    }
    .faq-item h3 {
      margin:0 0 8px;
      font-size:20px;
    }
    .footer-note {
      color:var(--muted);
      font-size:14px;
      margin-top:20px;
    }
    @media (max-width: 860px) {
      h1 { font-size:32px; }
      h2 { font-size:26px; }
      .toc ol { columns:1; }
      .compare-grid, .two-col, .signal-list {
        grid-template-columns:1fr;
      }
    }