:root {
      color-scheme: light;
      --ink: #17324a;
      --muted: #587184;
      --blue: #126b82;
      --blue-dark: #0b5268;
      --blue-pale: #eaf5f7;
      --line: #d7e4e9;
      --paper: #ffffff;
      --canvas: #f3f7f8;
      --gold-pale: #fff7e8;
      --radius: 18px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      background: var(--canvas);
      color: var(--ink);
      font: 17px/1.72 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    }
    a { color: var(--blue-dark); text-underline-offset: 3px; }
    a:hover { color: #063e50; }
    .page-shell { width: min(100% - 32px, 920px); margin: 40px auto; }
    .article-card {
      overflow: hidden;
      background: var(--paper);
      border: 1px solid var(--line);
      border-radius: 24px;
      box-shadow: 0 18px 50px rgba(23, 50, 74, .07);
    }
    .article-header {
      padding: clamp(30px, 6vw, 64px);
      background: linear-gradient(135deg, #f7fbfc 0%, #eaf5f7 100%);
    }
    .eyebrow {
      margin: 0 0 14px;
      color: var(--blue);
      font-size: .78rem;
      font-weight: 800;
      letter-spacing: .11em;
      text-transform: uppercase;
    }
    h1, h2, h3 { color: var(--ink); line-height: 1.22; }
    h1 { max-width: 760px; margin: 0; font-size: clamp(2rem, 5vw, 3.45rem); letter-spacing: -.035em; }
    .standfirst { max-width: 720px; margin: 22px 0 0; color: #36576c; font-size: 1.16rem; }
    .byline { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 24px; color: var(--muted); font-size: .91rem; }
    .article-body { padding: clamp(24px, 5vw, 58px); }
    h2 { margin: 48px 0 16px; font-size: clamp(1.45rem, 3vw, 2rem); letter-spacing: -.018em; }
    h3 { margin: 28px 0 10px; font-size: 1.14rem; }
    p { margin: 0 0 17px; }
    .summary, .cta-box { border-radius: var(--radius); padding: 22px 24px; }
    .summary { margin: 0 0 34px; background: var(--blue-pale); border-left: 5px solid var(--blue); }
    .summary strong { display: block; margin-bottom: 7px; }
    .toc { margin: 32px 0 40px; padding: 22px 26px; border: 1px solid var(--line); border-radius: var(--radius); background: #fbfdfe; }
    .toc h2 { margin: 0 0 12px; font-size: 1.08rem; }
    .toc ol { margin: 0; padding-left: 22px; }
    .toc li { margin: 6px 0; }
    .criteria-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 22px 0; }
    .criterion { padding: 19px; border: 1px solid var(--line); border-radius: 15px; background: #fcfefe; }
    .criterion h3 { margin: 0 0 8px; }
    .criterion p { margin: 0; color: #3e5c70; font-size: .95rem; }
    .table-wrap { overflow-x: auto; margin: 22px 0; border: 1px solid var(--line); border-radius: 14px; }
    table { width: 100%; border-collapse: collapse; min-width: 620px; font-size: .94rem; }
    th, td { padding: 14px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
    th { background: #eff6f8; color: var(--ink); }
    tr:last-child td { border-bottom: 0; }
    .checklist { padding-left: 23px; }
    .checklist li { margin: 9px 0; padding-left: 4px; }
    .cta-box { margin: 38px 0 20px; background: linear-gradient(135deg, #0e6077, #13869a); color: #fff; }
    .cta-box h2, .cta-box p { color: #fff; }
    .cta-box h2 { margin: 0 0 12px; }
    .cta-box a { display: inline-block; margin-top: 5px; padding: 12px 18px; border-radius: 999px; background: #fff; color: #0b5268; font-weight: 750; text-decoration: none; }
    .cta-box a:hover { background: #e9f5f7; }
    .faq { padding: 18px 0; border-top: 1px solid var(--line); }
    .faq h3 { margin-top: 0; }
    .sources { margin-top: 42px; padding-top: 24px; border-top: 1px solid var(--line); }
    .sources h2 { margin-top: 0; }
    .sources li { margin: 11px 0; }
    .sources small { display: block; color: var(--muted); }
    .disclaimer { margin-top: 26px; padding: 16px 18px; border-radius: 12px; background: var(--gold-pale); color: #67440e; font-size: .9rem; }
    .article-footer { padding: 20px clamp(24px, 5vw, 58px) 34px; color: var(--muted); font-size: .86rem; }
    @media (max-width: 650px) {
      body { font-size: 16px; }
      .page-shell { width: min(100% - 18px, 920px); margin: 12px auto; }
      .article-card { border-radius: 16px; }
      .criteria-grid { grid-template-columns: 1fr; }
      .summary, .cta-box { padding: 18px; }
    }