.quiz-option.selected{background:#667eea;color:#fff;border-color:#764ba2}.age-btn.active{background:#ff6b35;color:#fff;border-color:#d94e1f}.skill-results li{background:#f0f9ff;padding:12px 15px;margin-bottom:10px;border-radius:8px;border-left:4px solid #667eea;color:#2d2d2d}.hazard-item.spotted{background:#10b981;border-color:#059669}.milestone-item.completed .milestone-checkbox{background:#10b981;border-color:#10b981}.milestone-item.completed .milestone-checkbox::after{content:"✓";color:#fff;font-size:16px;font-weight:700}.milestone-item.completed .milestone-text{text-decoration:line-through;color:#9ca3af}.flashcard.flipped .flashcard-front{display:none}.flashcard.flipped .flashcard-back{display:block}