:root { color-scheme: light dark; }
* { box-sizing: border-box; }
body { margin: 0; padding: 12px; background: #f8fafc; color: #17212f; font: 14px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
.card { max-width: 760px; margin: auto; padding: 18px 20px; border: 1px solid #d9e2eb; border-radius: 12px; background: #fff; }
h1 { margin: 0 0 4px; font-size: 24px; }
h2 { margin: 16px 0 8px; font-size: 16px; }
p { margin: 6px 0; }
.note { color: #526276; }
pre { margin: 0; padding: 12px; border-radius: 8px; overflow-x: auto; background: #111827; color: #f8fafc; font: 12px/1.6 ui-monospace, SFMono-Regular, Menlo, monospace; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
a { color: #1767b2; }
nav { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 12px; }
@media (prefers-color-scheme: dark) { body { background: #111827; color: #f8fafc; } .card { background: #1f2937; border-color: #4b5563; } .note { color: #cbd5e1; } a { color: #93c5fd; } }