:root { color-scheme: light dark; --fg: #1d1d1f; --muted: #6e6e73; --link: #0a66d0; --bg: #ffffff; --card: #f5f5f7; }
@media (prefers-color-scheme: dark) { :root { --fg: #f5f5f7; --muted: #a1a1a6; --link: #4ea1ff; --bg: #000000; --card: #1c1c1e; } }
* { box-sizing: border-box; }
body { margin: 0 auto; max-width: 720px; padding: 32px 20px 64px; background: var(--bg); color: var(--fg); font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
nav { font-size: .95rem; margin-bottom: 32px; }
nav a { margin-right: 1em; }
a { color: var(--link); }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 .3em; }
h2 { font-size: 1.15rem; margin-top: 2em; }
.lede { font-size: 1.15rem; color: var(--muted); margin-top: 0; }
.card { background: var(--card); border-radius: 12px; padding: 16px 20px; margin: 16px 0; }
.small { font-size: .9rem; color: var(--muted); }
ul { padding-left: 1.2em; }
img { max-width: 100%; height: auto; }
footer { margin-top: 48px; font-size: .85rem; color: var(--muted); }