:root { --text: #1f2328; --muted: #59636e; --accent: #2563eb; --bg: #fff; --line: #d1d9e0; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) { --text: #e6edf3; --muted: #9da7b3; --accent: #6ea8ff; --bg: #0d1117; --line: #30363d; } }
:root[data-theme="dark"] { --text: #e6edf3; --muted: #9da7b3; --accent: #6ea8ff; --bg: #0d1117; --line: #30363d; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 48px 16px 64px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 12px; }
h2 { font-size: 1.2rem; margin: 32px 0 8px; }
.muted { color: var(--muted); }
a { color: var(--accent); }
nav { display: flex; gap: 16px; justify-content: flex-end; font-size: 15px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0 16px; }
pre, code { font-size: 15px; }