:root {
  --surface: #f8faf9;
  --card: #ffffff;
  --ink: #111827;
  --muted: #64748b;
  --primary: #0f766e;
  --line: #e2e8f0;
}
@media (prefers-color-scheme: dark) {
  :root {
    --surface: #0b0f14;
    --card: #161c24;
    --ink: #f1f5f9;
    --muted: #94a3b8;
    --primary: #2dd4bf;
    --line: #27303d;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--surface);
  color: var(--ink);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans Arabic", "Geeza Pro", sans-serif;
}
main { max-width: 44rem; margin: 0 auto; padding: 2rem 1rem 4rem; }
h1 { font-size: 2rem; margin: 0 0 .25rem; }
h2 { font-size: 1.25rem; margin: 2rem 0 .5rem; }
p, li { color: var(--ink); }
.muted { color: var(--muted); }
a { color: var(--primary); }
section { background: var(--card); border: 1px solid var(--line); border-radius: 1rem; padding: 1rem 1.25rem; margin: 1rem 0; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { text-align: start; padding: .5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
nav { display: flex; gap: 1rem; margin-bottom: 1.5rem; }