:root { color-scheme: light; font-family: Arial, sans-serif; }
body { margin: 0; background: #f4f5f6; color: #17191c; }
main { max-width: 840px; margin: 40px auto; padding: 0 20px; }
section { background: white; border: 1px solid #d8dce0; border-radius: 10px; margin: 18px 0; padding: 20px; }
label { display: grid; gap: 6px; margin: 12px 0; }
input { border: 1px solid #9ca3aa; border-radius: 6px; font: inherit; padding: 10px; }
button { background: #17191c; border: 0; border-radius: 999px; color: white; cursor: pointer; font: inherit; padding: 10px 18px; }
button:disabled { cursor: wait; opacity: .55; }
pre { background: #17191c; border-radius: 8px; color: #dfffe4; min-height: 150px; overflow: auto; padding: 16px; white-space: pre-wrap; }
code { background: #edf0f2; border-radius: 4px; padding: 2px 5px; }
.supporting { color: #626970; font-size: .92rem; }