/* PubMed-inspired theme (original look-and-feel inspired, not copied) */
:root{
  --content-max:820px;
  --muted:#6b7280;
  --link:#0b66c3;
  --border:#e6e6e6;
  --heading:#111827;
  --bg:#ffffff;
}
html,body{height:100%;margin:0;background:var(--bg);color:var(--heading);font-family:Inter,system-ui,Arial,Helvetica,sans-serif}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}

/* layout */
.pm-container{max-width:var(--content-max);margin:28px auto;padding:0 18px}
header.pm-header{display:flex;align-items:center;justify-content:space-between;padding:14px 0;border-bottom:1px solid var(--border)}
.pm-brand{font-weight:700;font-size:18px}
.pm-nav{font-size:15px;color:var(--muted)}
.pm-nav a{margin-left:14px;color:var(--muted)}

/* article */
.article{margin-top:18px}
.article h1{font-size:28px;margin:0 0 8px}
.article .meta{color:var(--muted);font-size:13px;margin-bottom:16px}
.article p{line-height:1.6;color:#111}
.article .lead{color:var(--muted);font-size:15px}

/* lists and cards */
.card-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-top:16px}
.card{border:1px solid var(--border);padding:14px;border-radius:6px;background:#fff}

/* citations */
.references{margin-top:22px}
.references ol{padding-left:1.2em}
.references li{margin-bottom:8px;color:var(--muted);font-size:14px}

/* small helpers */
.muted{color:var(--muted)}
.btn{display:inline-block;padding:8px 12px;background:#f3f4f6;border-radius:6px;border:1px solid var(--border);color:#111}

/* RTL support */
[dir="rtl"] .pm-container{direction:rtl}
[dir="rtl"] .pm-nav a{margin-left:0;margin-right:14px}

@media (max-width:700px){.article h1{font-size:22px}.pm-nav{display:none}}