body { font-family: system-ui, sans-serif; margin: 0; background: #fafaf7; color: #222; }
main { max-width: 46rem; margin: 2rem auto; padding: 0 1rem; }
section { margin: 2rem 0; }
button { font: inherit; padding: 0.4rem 0.9rem; cursor: pointer; }
.answer { margin-top: 1rem; padding: 1rem; border: 1px solid #ddd; border-radius: 6px; }