:root { --bg: #f5f8f7; --fg: #15201f; --muted: #566462; --line: #d6dedc; --brand: #3446b0; --brand-2: #f0b429; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #0c1211; --fg: #e3ebe9; --muted: #9baca9; --line: #2a3735; --brand: #9aa7e6; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif; }
header { background: #3446b0; color: #fff; border-bottom: 3px solid var(--brand-2); padding: 16px; font-weight: 700; }
header a { color: inherit; text-decoration: none; }
main { max-width: 680px; margin: 0 auto; padding: 16px 16px 48px; }
h1 { font-size: 28px; line-height: 1.2; margin: 16px 0 4px; }
h2 { font-size: 19px; margin: 28px 0 6px; }
p, li { margin: 8px 0; }
a { color: var(--brand); }
.date { color: var(--muted); font-size: 15px; }
footer { border-top: 1px solid var(--line); margin-top: 32px; padding-top: 12px; color: var(--muted); font-size: 15px; }