:root { color-scheme: dark; font: 15px system-ui,sans-serif; }
body { margin: 24px; background: #171b22; color: #e7edf6; }
main { max-width: 1000px; margin: auto; }
button,select { padding: 8px; margin: 4px; max-width: 100%; }
label { display: inline-block; }
video { width: 100%; max-height: 55vh; background: #000; }
pre { white-space: pre-wrap; overflow-wrap: anywhere; }