:root { color-scheme: light dark; font-family: system-ui, sans-serif; }
body { margin: 0; padding: 16px; }
main { max-width: 32rem; margin: 0 auto; display: grid; gap: 12px; }
button, input { font: inherit; padding: 10px 14px; }
button { cursor: pointer; }
ul { padding-left: 1.2rem; }