:root { --bg: #f6f8fb; --card: #fff; --text: #16202c; --muted: #5b6878; --accent: #2666db; --line: #e3e8ef; }
@media (prefers-color-scheme: dark) { :root { --bg: #0e141b; --card: #17202a; --text: #eef2f6; --muted: #9aa7b6; --accent: #66a0fa; --line: #26313d; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Rounded", "Segoe UI", sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 24px; }
header img { width: 48px; height: 48px; border-radius: 11px; }
header a { color: var(--text); text-decoration: none; font-weight: 700; font-size: 22px; }
h1 { font-size: 30px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 28px 0 6px; }
p, li { color: var(--text); }
.muted { color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 20px; margin: 20px 0; }
a { color: var(--accent); }
footer { margin-top: 40px; color: var(--muted); font-size: 15px; }
footer a { margin-right: 16px; }