:root { --bg: #f6fafb; --fg: #10262c; --muted: #4a5f65; --accent: #007fae; --card: #ffffff; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #00161c; --fg: #e6f2f5; --muted: #9db3b9; --accent: #1dc8fb; --card: #002c37; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Noto Sans Devanagari", sans-serif; }
main { max-width: 42rem; margin: 0 auto; padding: 2.5rem 1rem 4rem; }
header { display: flex; align-items: center; gap: 1rem; margin-bottom: 2rem; }
header img { width: 64px; height: 64px; border-radius: 14px; }
header a { color: inherit; text-decoration: none; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0; }
h2 { font-size: 1.2rem; margin-top: 2rem; }
p, li { color: var(--fg); }
.muted, footer { color: var(--muted); font-size: .95rem; }
.card { background: var(--card); border-radius: 16px; padding: 1.25rem 1.5rem; margin: 1.5rem 0; }
a { color: var(--accent); }
footer { margin-top: 3rem; border-top: 1px solid color-mix(in srgb, var(--muted) 30%, transparent); padding-top: 1rem; }