body { margin: 0; background: #f5f7f6; color: #182c25; font: 16px/1.7 sans-serif; }
main { max-width: 36rem; margin: 24px auto; padding: 24px; background: white; }
h1 { font-size: 1.7rem; }
pre { font: inherit; white-space: pre-wrap; overflow-wrap: anywhere; }
button { font: inherit; min-height: 48px; padding: 12px 20px; border: 0; border-radius: 8px; background: #087a44; color: white; cursor: pointer; }
button:disabled { opacity: .6; cursor: default; }