.checklist-checkbox.checked{background:#667eea}.checklist-checkbox.checked::after{content:"✓";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);color:white;font-weight:700;font-size:12px}.accordion-header.active .accordion-icon{transform:rotate(180deg)}.fade-in.visible{opacity:1;transform:translateY(0)}