body { background-color: #f8f9fa; }
.form-check-lg .form-check-input { width: 1.4em; height: 1.4em; margin-top: 0.2em; }
#answerInput { font-size: 2.5rem !important; }
#questionText { letter-spacing: 2px; }
.progress { border-radius: 8px; }
@media (max-width: 576px) {
  .display-4 { font-size: 2.2rem; }
  .btn-lg { font-size: 1.2rem; padding: 0.75rem; }
}