:root { --ink: #1b1c1f; --muted: #5b6068; --accent: #335488; --bg: #ffffff; --card: #f3f5f9; }
@media (prefers-color-scheme: dark) { :root { --ink: #eceef2; --muted: #a6acb6; --accent: #8fb0e6; --bg: #121417; --card: #1d2026; } }
* { box-sizing: border-box; }
body { margin: 0; font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; color: var(--ink); background: var(--bg); }
main { max-width: 760px; margin: 0 auto; padding: 32px 20px 64px; }
header { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; }
header img { width: 56px; height: 56px; border-radius: 13px; }
header a { color: inherit; text-decoration: none; font-weight: 700; font-size: 22px; }
h1 { font-size: 32px; line-height: 1.2; margin: 8px 0 16px; }
h2 { font-size: 21px; margin: 32px 0 8px; }
p, li { color: var(--ink); }
.muted { color: var(--muted); }
a { color: var(--accent); }
.card { background: var(--card); border-radius: 16px; padding: 18px 20px; margin: 16px 0; }
nav { margin-top: 40px; display: flex; flex-wrap: wrap; gap: 18px; font-size: 15px; }