:root { font-family: system-ui, sans-serif; color-scheme: light dark; }
body { margin: 0; padding: 24px; }
main { max-width: 560px; margin: auto; }
label { display: block; margin: 18px 0; }
input, select, button { box-sizing: border-box; width: 100%; padding: 12px; margin-top: 6px; font: inherit; }
button { cursor: pointer; border: 0; border-radius: 8px; background: #126b36; color: white; }
button:disabled { opacity: .6; }
input[type="checkbox"] { width: auto; margin-right: 8px; }
code { display: block; overflow-wrap: anywhere; }
#message { padding: 12px; border: 1px solid #888; border-radius: 8px; }