body {font-family: -apple-system,system-ui,'Segoe UI',Roboto,Arial,sans-serif; margin:2rem; background:#f9f9f9; color:#333}
#app {margin-top:1.5rem}
.question {margin-bottom:1rem}
.options button {display:block; margin:4px 0; padding:6px 12px; width:100%; text-align:left}
.result {font-weight:bold; margin-top:2rem}