:root{
      --ink:#0b1220;           /* deep navy for headings */
      --text:#334155;          /* slate for body */
      --brand:#0ea5e9;         /* medical blue */
      --bg:#f8fafc;            /* page background */
      --card:#ffffff;          /* card background */
      --muted:#64748b;         /* muted */
      --ring: rgba(14,165,233,.3);
      --radius: 18px;
    }
    *{box-sizing:border-box}
    html,body{margin:0;padding:0}
    body{
      font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Apple Color Emoji","Segoe UI Emoji";
      color:var(--text);
      background:var(--bg);
      line-height:1.6;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:var(--brand);text-decoration:none}
    a:hover{text-decoration:underline}
    .wrap{max-width:1100px;margin:auto;padding:24px}
    .hero{
      position:relative;overflow:hidden;border-radius:calc(var(--radius) * 1.2);
      background:radial-gradient(1200px 600px at 70% -10%, #e0f2fe 0, #f8fafc 60%);
      padding: clamp(32px, 6vw, 64px);
      display:grid; gap:24px; align-items:center;
      grid-template-columns: 1.2fr 1fr;
    }
    .hero h1{
      color:var(--ink);
      font-size: clamp(28px, 3.2vw, 44px);
      line-height:1.15; margin:0 0 10px;
      letter-spacing:-0.02em;
    }
    .eyebrow{color:var(--brand); font-weight:600;letter-spacing:.08em;text-transform:uppercase;font-size:12px}
    .hero p{margin:0;color:#475569;font-size: clamp(15px, 1.3vw, 18px)}
    .hero img{width:100%;height:auto;border-radius:16px;box-shadow:0 12px 40px rgba(2, 6, 23, .12)}
    .meta{display:flex;gap:16px;flex-wrap:wrap;margin-top:12px;color:var(--muted);font-size:13px}
    .grid{display:grid; gap:24px}
    @media (max-width: 900px){ .hero{grid-template-columns:1fr} }

    .card{
      background:var(--card);border-radius:var(--radius);
      box-shadow:0 10px 30px rgba(2,6,23,.06);
      padding: clamp(18px, 2.6vw, 28px);
    }
    h2{color:var(--ink);font-size: clamp(22px, 2.3vw, 30px);margin:8px 0 10px}
    h3{color:var(--ink);font-size: clamp(18px, 1.9vw, 22px);margin:8px 0}
    .toc a{display:block;padding:10px 12px;border-radius:12px;color:#0f172a;background:#f1f5f9}
    .toc a + a{margin-top:8px}
    .toc a:hover{background:#e2e8f0}
    .checklist{display:grid;gap:10px}
    .checklist li{
      list-style:none; padding-left:28px; position:relative;
    }
    .checklist li::before{
      content:""; position:absolute; left:0; top:6px; width:18px; height:18px; border-radius:50%;
      background: conic-gradient(var(--brand), #06b6d4);
      box-shadow: 0 0 0 4px var(--ring);
      mask: radial-gradient(circle at 50% 50%, white 60%, transparent 61%);
    }
    .media{
      display:grid; gap:18px; grid-template-columns: 1fr 1fr;
    }
    @media (max-width: 780px){ .media{grid-template-columns:1fr} }
    figure{margin:0}
    figcaption{font-size:12px;color:#64748b;margin-top:6px}
    .pill{display:inline-flex;align-items:center;gap:8px;background:#e6f6fe;border:1px solid #bae6fd;color:#075985;border-radius:999px;padding:8px 12px;font-size:12px}
    .cta{
      display:grid;gap:18px; align-items:center;
      grid-template-columns: 1.2fr auto;
    }
    @media (max-width: 780px){ .cta{grid-template-columns:1fr} }
    .btn{
      display:inline-flex;align-items:center;gap:10px;
      background:linear-gradient(135deg, var(--brand), #06b6d4);
      color:white;border:none;border-radius:12px;padding:12px 18px;font-weight:600;
      box-shadow:0 10px 20px rgba(14,165,233,.25);
    }
    .btn:hover{filter:saturate(110%) brightness(98%); text-decoration:none}
    .faq details{border:1px solid #e2e8f0;border-radius:14px;padding:14px 16px;background:#fff}
    .faq details + details{margin-top:10px}
    .faq summary{cursor:pointer;font-weight:600;color:#0f172a}
    .note{font-size:13px;color:var(--muted)}
    .foot{
      padding:24px 0 8px; color:var(--muted); font-size:12px; text-align:center
    }
    .kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,"Courier New",monospace;padding:.1em .4em;border:1px solid #cbd5e1;border-bottom-width:2px;border-radius:6px;background:#f8fafc}