@keyframes back-to-top-flash{0%,to{box-shadow:0 8px 28px -8px color-mix(in srgb, var(--store-accent) 35%, transparent);transform:translateY(0)scale(1)}50%{box-shadow:0 12px 36px -6px color-mix(in srgb, var(--store-accent) 70%, transparent);transform:translateY(-2px)scale(1.06)}}.animate-back-to-top-flash{animation:1.6s ease-in-out infinite back-to-top-flash}