:root{
      --tps-blue:#3598db;
      --text:#111;
      --muted:#4b5563;
      --border:#e5e7eb;
      --bg:#ffffff;
      --card:#f8fafc;
    }
    article{
      font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
      color: var(--text);
      background: var(--bg);
      line-height: 1.55;
      max-width: 920px;
      margin: 0 auto;
      padding: 24px 16px 56px;
    }
    header{
      border-bottom: 1px solid var(--border);
      padding-bottom: 18px;
      margin-bottom: 18px;
    }
    h1,h2,h3{
      color: var(--tps-blue);
      font-weight: 800;
      letter-spacing: -0.01em;
      line-height: 1.2;
      margin: 18px 0 10px;
    }
    h1{ font-size: 2rem; margin-top: 0; }
    h2{ font-size: 1.35rem; margin-top: 22px; }
    h3{ font-size: 1.05rem; margin-top: 16px; }

    p{ margin: 10px 0; }
    .lede{ font-size: 1.02rem; color: var(--text); }
    .muted{ color: var(--muted); }
    .callouts{
      display: grid;
      grid-template-columns: 1fr;
      gap: 12px;
      margin: 14px 0 6px;
    }
    .card{
      background: var(--card);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 14px 14px;
    }
    .highlights ul{
      margin: 8px 0 0 18px;
    }
    .cta-row{
      display:flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 12px;
    }
    .btn{
      display:inline-block;
      padding: 10px 12px;
      border-radius: 10px;
      text-decoration: none;
      font-weight: 700;
      border: 1px solid var(--tps-blue);
    }
    .btn-primary{
      background: var(--tps-blue);
      color: #fff;
    }
    .btn-secondary{
      color: var(--tps-blue);
      background: #fff;
    }
    nav.toc{
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 14px;
      background: #fff;
      margin: 16px 0 22px;
    }
    nav.toc ol{
      margin: 8px 0 0 18px;
    }
    nav.toc a{
      color: var(--tps-blue);
      text-decoration: none;
      font-weight: 650;
    }
    figure{
      margin: 16px 0 18px;
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: 12px;
      background: #fff;
    }
    figcaption{
      margin-top: 10px;
      font-size: 0.95rem;
      color: var(--muted);
    }
    .note{
      border-left: 4px solid var(--tps-blue);
      padding: 10px 12px;
      background: #f0f7fd;
      border-radius: 10px;
      margin: 12px 0;
    }
    .two-col{
      display:grid;
      grid-template-columns: 1fr;
      gap: 14px;
      margin: 10px 0;
    }
    @media(min-width: 820px){
      .callouts{ grid-template-columns: 1fr 1fr; }
      .two-col{ grid-template-columns: 1fr 1fr; }
    }
    table{
      width:100%;
      border-collapse: collapse;
      margin: 10px 0 6px;
      font-size: 0.97rem;
    }
    th,td{
      border:1px solid var(--border);
      padding:10px 10px;
      vertical-align: top;
    }
    th{
      background:#f3f4f6;
      font-weight: 800;
    }
    .kpi{
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
      background:#0b1220;
      color:#e5e7eb;
      padding:10px 12px;
      border-radius: 12px;
      overflow:auto;
    }
    .faq details{
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 12px 14px;
      margin: 10px 0;
      background: #fff;
    }
    .faq summary{
      cursor: pointer;
      font-weight: 800;
      color: var(--tps-blue);
    }
    footer{
      border-top: 1px solid var(--border);
      padding-top: 16px;
      margin-top: 26px;
    }