body { font: 16px/1.4 system-ui, sans-serif; margin: 0; background: #fafafa; color: #111; }
main { max-width: 40rem; margin: 0 auto; padding: 1rem; }
label { display: block; margin-top: 1rem; font-weight: 600; }
textarea, input { width: 100%; box-sizing: border-box; font: inherit; padding: .5rem; }
button { margin-top: 1rem; padding: .6rem 1.2rem; font: inherit; }
button:disabled { opacity: .5; }
#status { min-height: 1.4em; font-weight: 600; }
#status.error { color: #a00; }
#status.ok { color: #060; }
.advisory { margin-top: 2rem; font-size: .85rem; color: #555; }