@keyframes bb-shine{0%{transform:translateX(-120%)}100%{transform:translateX(120%)}}
@keyframes bb-pulse{
0%,100%{ box-shadow:0 10px 25px rgba(99,102,241,.25), 0 0 0 0 rgba(37,99,235,.35) }
50%{    box-shadow:0 18px 40px rgba(99,102,241,.40), 0 0 0 10px rgba(37,99,235,0) }
}
.btn-cta{ animation:bb-pulse 1.6s ease-in-out infinite }
.btn-cta .shine{ animation:bb-shine 1.2s ease-in-out infinite }
@media (prefers-reduced-motion: reduce){
.btn-cta{ animation:none }
.btn-cta .shine{ display:none }
}