.result-box.show{display:block;animation:slideIn .5s ease}.flip-card.flipped .flip-card-inner{transform:rotateY(180deg)}.myth-item.revealed .myth-truth{display:block}.checkpoint.completed .checkpoint-icon{background:#27ae60;color:white}.checkpoint.completed .checkpoint-icon:after{content:"✓"}.experiment-result.show{display:block;animation:slideIn .5s ease}.experiment-title{font-size:1.3em;font-weight:700;color:#c0392b;margin-bottom:15px}.experiment-details{line-height:1.7}