:root { --bg: #ffffff; --fg: #16181d; --muted: #5d6470; --line: #e4e6eb; --accent: #b8860b; }
@media (prefers-color-scheme: dark) { :root { --bg: #0f1013; --fg: #eceef2; --muted: #9aa0aa; --line: #262930; --accent: #e0a526; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
main, header, footer { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header { display: flex; align-items: center; justify-content: space-between; padding-top: 28px; padding-bottom: 12px; }
.brand { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; font-weight: 600; font-size: 18px; }
.brand img { width: 36px; height: 36px; }
nav a { color: var(--muted); text-decoration: none; margin-left: 18px; font-size: 14px; }
nav a:hover { color: var(--fg); }
h1 { font-size: 34px; line-height: 1.2; margin: 48px 0 12px; }
h2 { font-size: 20px; margin: 36px 0 8px; }
p, li { color: var(--fg); }
.lead { font-size: 18px; color: var(--muted); }
.muted { color: var(--muted); font-size: 14px; }
a { color: var(--accent); }
ul { padding-left: 22px; }
.card { border: 1px solid var(--line); border-radius: 10px; padding: 18px 20px; margin: 14px 0; }
footer { border-top: 1px solid var(--line); margin-top: 56px; padding-top: 18px; padding-bottom: 36px; color: var(--muted); font-size: 14px; }
footer a { color: var(--muted); margin-right: 16px; }