.question-container{margin-bottom:18px;padding:16px;border-radius:8px;border:1px solid #e0e0e0;background:#fafafa}.question-number{font-weight:700;color:#3498db;margin-bottom:8px}.question-text{margin-bottom:12px;font-size:1.05rem}.options-container{display:grid;grid-template-columns:1fr;gap:10px}.option{padding:10px 12px;border:1px solid #ddd;border-radius:6px;cursor:pointer;transition:all .18s;user-select:none}.option:hover{background:#e8f4fc;border-color:#3498db}.option.selected{background:#3498db;color:#fff;border-color:#2980b9}@media (min-width:768px){.options-container{grid-template-columns:1fr 1fr}}.success{background:#d4edda;color:#155724;border:1px solid #c3e6cb}.error{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.result-card{padding:12px;border-radius:8px;border:1px solid #eee;background:#fff;margin-bottom:10px}.correct-badge{display:inline-block;padding:4px 8px;border-radius:4px;font-weight:700;margin-left:10px}.correct{background:#d4edda;color:#155724;border:1px solid #c3e6cb}.incorrect{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.small{font-size:.95rem;color:#555}.explanation{margin-top:8px;background:#f7f9fc;padding:10px;border-radius:6px;border:1px dashed #e0e7ef}