:root { --bg: #F5F6F2; --card: #FFFFFF; --ink: #15201A; --secondary: #55625A; --brand: #1D6B47; --border: #DADFD5; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #111613; --card: #1C2420; --ink: #E6ECE8; --secondary: #A2AFA7; --brand: #5CC28C; --border: #2F3A33; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.6 "IBM Plex Sans", "IBM Plex Sans Arabic", -apple-system, system-ui, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
header .mark { width: 40px; height: 40px; border-radius: 10px; background: var(--brand); }
header a { color: var(--secondary); margin-inline-start: auto; font-size: 14px; }
h1 { font-size: 28px; margin: 0; }
h2 { font-size: 20px; margin: 32px 0 8px; }
section { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 4px 20px 16px; margin-top: 16px; }
p, li { color: var(--ink); }
.muted { color: var(--secondary); font-size: 14px; }
a { color: var(--brand); }