: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 14px 42px rgba(2,32,71,.08);
      --radius:18px;
      --max:1180px;
    }
    * { box-sizing:border-box; }
    html { scroll-behavior:smooth; }
    body {
      margin:0;
      font-family:Arial,Helvetica,sans-serif;
      color:var(--ink);
      background:linear-gradient(180deg,#f6f9fd 0%,#eef4fa 100%);
      line-height:1.8;
    }
    a { color:var(--brand); text-decoration:none; }
    a:hover { text-decoration:underline; }
    img { max-width:100%; height:auto; display:block; border-radius:16px; }
    .wrap { max-width:var(--max); margin:0 auto; padding:32px 18px 72px; }
    .hero {
      background:linear-gradient(135deg,#0b5cab 0%,#083d74 65%,#0f172a 100%);
      color:#fff;
      border-radius:28px;
      padding:42px 28px;
      box-shadow:var(--shadow);
    }
    .eyebrow {
      display:inline-block;
      padding:8px 12px;
      background:rgba(255,255,255,.14);
      border:1px solid rgba(255,255,255,.25);
      border-radius:999px;
      font-size:12px;
      letter-spacing:.08em;
      text-transform:uppercase;
      margin-bottom:16px;
    }
    .hero h1 {
      margin:0 0 16px;
      font-size:clamp(30px,4vw,48px);
      line-height:1.18;
    }
    .hero p {
      margin:0;
      max-width:940px;
      font-size:18px;
      color:rgba(255,255,255,.92);
    }
    .hero-meta {
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:14px;
      margin-top:24px;
    }
    .hero-meta div {
      background:rgba(255,255,255,.1);
      border:1px solid rgba(255,255,255,.18);
      border-radius:16px;
      padding:14px;
      font-size:14px;
    }
    .toc {
      margin:24px 0 26px;
      background:var(--card);
      border:1px solid var(--line);
      border-radius:24px;
      padding:24px;
      box-shadow:var(--shadow);
    }
    .toc h2 {
      margin:0 0 14px;
      color:var(--brand-dark);
      font-size:24px;
    }
    .toc-grid {
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:10px 18px;
      padding:0;
      margin:0;
      list-style:none;
    }
    .toc a {
      display:block;
      padding:10px 12px;
      background:var(--soft);
      border:1px solid var(--line);
      border-radius:14px;
      font-weight:700;
    }
    .section {
      margin-top:26px;
      background:var(--card);
      border:1px solid var(--line);
      border-radius:24px;
      padding:34px 28px;
      box-shadow:var(--shadow);
    }
    .section h2 {
      margin:0 0 16px;
      font-size:32px;
      line-height:1.22;
      color:var(--brand-dark);
      scroll-margin-top:100px;
    }
    .section h3 {
      margin:30px 0 12px;
      font-size:23px;
      line-height:1.32;
      color:var(--ink);
      scroll-margin-top:100px;
    }
    .lede {
      font-size:18px;
      color:#1e293b;
    }
    .callout {
      border-left:5px solid var(--brand);
      background:var(--accent);
      padding:16px 18px;
      border-radius:0 16px 16px 0;
      margin:18px 0;
    }
    .note {
      background:#fff7ed;
      border:1px solid #fed7aa;
      color:#7c2d12;
      padding:14px 16px;
      border-radius:16px;
      margin:16px 0;
    }
    .grid-2 {
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:18px;
      align-items:start;
    }
    .cards {
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:16px;
      margin-top:18px;
    }
    .card {
      background:var(--soft);
      border:1px solid var(--line);
      border-radius:18px;
      padding:18px;
    }
    .card h4 {
      margin:0 0 8px;
      font-size:20px;
      color:var(--brand-dark);
    }
    .image-wrap {
      margin:22px 0 8px;
    }
    .image-wrap figcaption {
      font-size:14px;
      color:var(--muted);
      margin-top:10px;
    }
    ul.checks, ul.links, ul.compact {
      margin:14px 0 0 0;
      padding-left:20px;
    }
    ul.checks li, ul.links li, ul.compact li {
      margin:8px 0;
    }
    .spec-table, .model-table {
      width:100%;
      border-collapse:collapse;
      margin-top:18px;
      font-size:15px;
      background:#fff;
      overflow:hidden;
      border-radius:16px;
    }
    .spec-table th, .spec-table td,
    .model-table th, .model-table td {
      border:1px solid var(--line);
      padding:12px 12px;
      vertical-align:top;
      text-align:left;
    }
    .spec-table th, .model-table th {
      background:#eef6ff;
      color:var(--brand-dark);
    }
    .pill {
      display:inline-block;
      padding:6px 10px;
      border-radius:999px;
      background:#e8f7ef;
      color:var(--ok);
      font-size:12px;
      font-weight:700;
      margin:4px 8px 0 0;
    }
    .btn-row {
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:16px;
    }
    .btn {
      display:inline-block;
      padding:12px 16px;
      border-radius:12px;
      background:var(--brand);
      color:#fff;
      font-weight:700;
      text-decoration:none;
    }
    .btn.secondary {
      background:#fff;
      color:var(--brand-dark);
      border:1px solid var(--line);
    }
    .faq-item {
      border-top:1px solid var(--line);
      padding:18px 0;
    }
    .faq-item:first-child { border-top:none; padding-top:0; }
    .faq-item h3 { margin:0 0 10px; font-size:21px; }
    .cta-panel {
      margin-top:18px;
      background:linear-gradient(135deg,#eef6ff 0%,#ffffff 100%);
      border:1px solid var(--line);
      border-radius:22px;
      padding:24px;
    }
    .small {
      font-size:14px;
      color:var(--muted);
    }
    .source-links a {
      word-break:break-word;
    }
    @media (max-width:980px) {
      .hero-meta, .grid-2, .cards, .toc-grid { grid-template-columns:1fr; }
    }