:root{
    --ink:#0f172a;
    --text:#334155;
    --muted:#64748b;
    --line:#e2e8f0;
    --bg:#f6f8fb;
    --card:#ffffff;

    --brand:#0b4e85;         /* medical navy */
    --brand2:#1e6fb8;        /* medical blue */
    --accent:#00a3b4;        /* clinical teal */
    --gold:#c5a059;          /* premium */
    --shadow: 0 18px 55px rgba(2, 8, 23, .10);
    --shadow2: 0 10px 30px rgba(2, 8, 23, .08);
    --radius:16px;
  }

  *{box-sizing:border-box;margin:0;padding:0}
  body{
    font-family:Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    background: radial-gradient(1200px 600px at 15% -5%, rgba(30,111,184,.18), transparent 55%),
                radial-gradient(900px 500px at 95% 0%, rgba(0,163,180,.14), transparent 52%),
                var(--bg);
    color:var(--text);
    line-height:1.8;
  }
  a{color:var(--brand2);text-decoration:none}
  a:hover{text-decoration:underline}

  .wrap{max-width:1100px;margin:0 auto;padding:32px 18px 70px}
  .shell{
    background:rgba(255,255,255,.78);
    border:1px solid rgba(226,232,240,.9);
    backdrop-filter:saturate(1.2) blur(8px);
    border-radius:24px;
    box-shadow:var(--shadow);
    overflow:hidden;
  }

  /* ===== HERO ===== */
  .hero{
    position:relative;
    padding:44px 44px 28px;
    background:
      radial-gradient(800px 360px at 18% 10%, rgba(30,111,184,.18), transparent 60%),
      radial-gradient(700px 340px at 85% 20%, rgba(0,163,180,.12), transparent 58%),
      linear-gradient(135deg, rgba(255,255,255,.92), rgba(255,255,255,.72));
    border-bottom:1px solid rgba(226,232,240,.85);
  }
  .hero-grid{
    display:grid;
    grid-template-columns: 1.2fr .8fr;
    gap:28px;
    align-items:center;
  }
  .kicker{
    display:inline-flex;
    gap:10px;
    align-items:center;
    padding:8px 12px;
    border:1px solid rgba(226,232,240,.9);
    border-radius:999px;
    background:rgba(255,255,255,.75);
    color:var(--ink);
    font-weight:600;
    font-size:.9rem;
    width:fit-content;
  }
  .dot{width:8px;height:8px;border-radius:999px;background:linear-gradient(135deg,var(--brand2),var(--accent))}
  h1{
    margin-top:14px;
    font-size:2.35rem;
    line-height:1.15;
    color:var(--ink);
    letter-spacing:-.02em;
  }
  .meta{
    margin-top:12px;
    color:var(--muted);
    font-size:.95rem;
  }
  .hero p{
    margin-top:18px;
    color:var(--text);
    max-width:64ch;
  }
  .hero-card{
    background:rgba(255,255,255,.86);
    border:1px solid rgba(226,232,240,.9);
    border-radius:18px;
    padding:18px;
    box-shadow:var(--shadow2);
  }
  .hero-card h3{
    color:var(--ink);
    font-size:1rem;
    margin-bottom:10px;
  }
  .chips{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
  }
  .chip{
    font-size:.85rem;
    padding:8px 10px;
    border-radius:999px;
    background:linear-gradient(135deg, rgba(30,111,184,.10), rgba(0,163,180,.08));
    border:1px solid rgba(226,232,240,.85);
    color:var(--ink);
    font-weight:600;
  }

  /* ===== CONTENT LAYOUT ===== */
  .content{
    display:grid;
    grid-template-columns: 1fr 320px;
    gap:28px;
    padding:32px 44px 44px;
  }
  .article{min-width:0}
  .aside{position:sticky;top:90px;align-self:start}

  /* ===== TOC ===== */
  .toc{
    background:rgba(255,255,255,.9);
    border:1px solid rgba(226,232,240,.9);
    border-radius:18px;
    padding:18px;
    box-shadow:var(--shadow2);
  }
  .toc h4{color:var(--ink);font-size:.98rem;margin-bottom:10px}
  .toc a{
    display:block;
    padding:8px 10px;
    border-radius:10px;
    color:var(--text);
    font-weight:600;
    font-size:.92rem;
  }
  .toc a:hover{
    background:linear-gradient(135deg, rgba(30,111,184,.10), rgba(0,163,180,.08));
    text-decoration:none;
  }

  /* ===== SECTIONS ===== */
  .section{margin-top:26px}
  .section h2{
    color:var(--ink);
    font-size:1.35rem;
    letter-spacing:-.01em;
    margin:26px 0 12px;
    padding-left:14px;
    border-left:4px solid var(--brand2);
  }

  .callout{
    margin:18px 0;
    padding:16px 16px;
    border-radius:16px;
    background:linear-gradient(135deg, rgba(30,111,184,.10), rgba(0,163,180,.06));
    border:1px solid rgba(226,232,240,.9);
  }
  .callout strong{color:var(--ink)}
  .grid2{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:14px;
    margin-top:16px;
  }
  .mini{
    background:rgba(255,255,255,.9);
    border:1px solid rgba(226,232,240,.9);
    border-radius:16px;
    padding:14px;
  }
  .mini b{color:var(--ink)}
  .mini p{margin-top:6px;color:var(--muted);font-size:.95rem}

  /* ===== Comparison table ===== */
  .table{
    margin-top:14px;
    border:1px solid rgba(226,232,240,.9);
    border-radius:16px;
    overflow:hidden;
    background:#fff;
  }
  table{width:100%;border-collapse:collapse}
  th,td{padding:14px 14px;border-bottom:1px solid rgba(226,232,240,.8);vertical-align:top}
  th{background:rgba(241,245,249,.75);color:var(--ink);text-align:left;font-weight:700;width:34%}

  /* ===== CTA ===== */
  .cta{
    margin-top:18px;
    background:linear-gradient(135deg, rgba(11,78,133,.94), rgba(30,111,184,.88));
    color:#fff;
    border-radius:18px;
    padding:18px;
    box-shadow:var(--shadow2);
  }
  .cta p{color:rgba(255,255,255,.86);margin-top:6px;font-size:.95rem}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;
    gap:10px;
    margin-top:14px;
    padding:12px 14px;
    border-radius:14px;
    background:#fff;
    color:var(--ink);
    font-weight:800;
    text-decoration:none;
  }
  .btn:hover{text-decoration:none;filter:brightness(.98)}
  .btn small{font-weight:700;color:var(--muted)}

  /* ===== FAQ ===== */
  .faq{
    margin-top:28px;
    padding:18px;
    border-radius:18px;
    background:rgba(255,255,255,.9);
    border:1px solid rgba(226,232,240,.9);
  }
  .faq h2{margin-top:0}
  details{
    border:1px solid rgba(226,232,240,.9);
    border-radius:14px;
    background:#fff;
    padding:14px 14px;
    margin-top:12px;
  }
  summary{
    cursor:pointer;
    color:var(--ink);
    font-weight:800;
    list-style:none;
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:14px;
  }
  summary::-webkit-details-marker{display:none}
  summary:after{
    content:"+";
    font-size:1.2rem;
    color:var(--brand2);
    font-weight:900;
  }
  details[open] summary:after{content:"–"}
  details p{
    margin-top:10px;
    color:var(--text);
  }

  /* ===== Footer ===== */
  .footer{
    padding:18px 44px 32px;
    border-top:1px solid rgba(226,232,240,.85);
    color:var(--muted);
    font-size:.95rem;
    display:flex;
    justify-content:space-between;
    gap:14px;
    flex-wrap:wrap;
    background:rgba(255,255,255,.6);
  }

  /* ===== Responsive ===== */
  @media (max-width: 980px){
    .hero-grid{grid-template-columns:1fr}
    .content{grid-template-columns:1fr;padding:22px 18px 26px}
    .hero{padding:28px 18px}
    .aside{position:static}
  }
  @media (max-width: 640px){
    h1{font-size:1.85rem}
    .grid2{grid-template-columns:1fr}
  }