:root { color-scheme: light dark; --bg: #fff; --fg: #1d1d1f; --muted: #6e6e73; --line: #e5e5ea; --tint: #0a5fd6; }
@media (prefers-color-scheme: dark) { :root { --bg: #000; --fg: #f5f5f7; --muted: #a1a1a6; --line: #2c2c2e; --tint: #5aa0ff; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 48px 20px 80px; }
nav { font-size: 15px; color: var(--muted); margin-bottom: 32px; }
nav a { color: var(--muted); text-decoration: none; margin-right: 18px; }
nav a[aria-current] { color: var(--fg); font-weight: 600; }
h1 { font-size: 34px; line-height: 1.15; margin: 0 0 6px; letter-spacing: -0.01em; }
.sub { color: var(--muted); margin: 0 0 36px; }
h2 { font-size: 21px; margin: 40px 0 10px; }
p, li { margin: 0 0 12px; }
ul { padding-left: 22px; }
a { color: var(--tint); }
table { border-collapse: collapse; width: 100%; margin: 8px 0 16px; font-size: 15px; }
td, th { text-align: left; padding: 8px 10px 8px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
footer { margin-top: 64px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }