@keyframes ntRipple {
  0%   { transform: scale(.5);  opacity: 0; }
  22%  { opacity: .5; }
  100% { transform: scale(2.0); opacity: 0; }
}

@keyframes ntBreathe {
  0%,100% { opacity: .32; transform: scale(1); }
  50%     { opacity: .72; transform: scale(1.25); }
}

@keyframes ntScroll {
  0%   { transform: translateY(0);    opacity: 0; }
  30%  { opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}