:root { color-scheme: light dark; --bg: #f6f6f4; --card: #ffffff; --ink: #16181c; --muted: #5d636d; --rule: #dfe0dc; --link: #0a5fd6; }
@media (prefers-color-scheme: dark) { :root { --bg: #08090c; --card: #13151a; --ink: #eef0f3; --muted: #a0a6b0; --rule: #2a2e35; --link: #6fb0ff; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 40px 20px 64px; }
header { display: flex; align-items: center; gap: 16px; margin-bottom: 28px; }
header a { color: inherit; text-decoration: none; }
header strong { font-size: 24px; display: block; line-height: 1.2; }
header span { color: var(--muted); font-size: 15px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 19px; margin: 28px 0 4px; }
p, ul { margin: 8px 0; }
li { margin: 8px 0; }
a { color: var(--link); }
.muted { color: var(--muted); font-size: 15px; }
.card { background: var(--card); border: 1px solid var(--rule); border-radius: 14px; padding: 18px 20px; margin: 20px 0; }
footer { margin-top: 36px; padding-top: 16px; border-top: 1px solid var(--rule); font-size: 15px; }
footer a { margin-right: 16px; }