:root { color-scheme: light dark; --fg: #1b1b1b; --bg: #fafafa; --muted: #666; --line: #ddd; --accent: #0a6; }
@media (prefers-color-scheme: dark) { :root { --fg: #eee; --bg: #161616; --muted: #aaa; --line: #333; } }
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, sans-serif; color: var(--fg); background: var(--bg); }
header, footer { display: flex; gap: 16px; align-items: center; padding: 12px 16px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
footer { border-top: 1px solid var(--line); border-bottom: 0; font-size: 13px; }
header nav a { margin-right: 12px; }
main { max-width: 860px; margin: 0 auto; padding: 16px; }
a { color: var(--accent); }
button, .button { display: inline-block; margin: 4px 6px 4px 0; padding: 6px 12px; border: 1px solid var(--line); border-radius: 6px; background: transparent; color: var(--fg); cursor: pointer; font: inherit; text-decoration: none; }
.panel { margin-top: 24px; padding: 12px 16px; border: 1px solid var(--line); border-radius: 8px; }
.panel h3 { margin: 14px 0 4px; font-size: 14px; }
pre { margin: 4px 0; padding: 8px; overflow-x: auto; background: rgba(127,127,127,.08); border-radius: 6px; font-size: 12px; white-space: pre-wrap; word-break: break-word; }
.hint { color: var(--muted); font-size: 13px; }
details summary { cursor: pointer; font-size: 13px; }