.mmn-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: var(--mmn-z, 20);
}

.mmn-note {
  position: absolute;
  will-change: transform, opacity;
  opacity: var(--mmn-op, 0.9);
  font-weight: 700;
  line-height: 1;
  user-select: none;
  text-shadow: 0 2px 6px rgba(0,0,0,.35);
  animation-name: mmn-float;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}

@keyframes mmn-float {
  0%   { transform: translate(var(--x0), var(--y0)) rotate(0deg) scale(1);   opacity: 0; }
  5%   { opacity: var(--mmn-op, 0.9); }
  50%  { transform: translate(var(--x50), var(--y50)) rotate(10deg) scale(1.05); }
  100% { transform: translate(var(--x100), var(--y100)) rotate(20deg) scale(1.1); opacity: 0; }
}