gashigashi motion

@keyframes onoma-gashigashi {
  0% { transform: rotate(0deg); }
  9.09% { transform: rotate(8deg); }
  18.18% { transform: rotate(-7.2deg); }
  27.27% { transform: rotate(6.4deg); }
  36.36% { transform: rotate(-5.6deg); }
  45.45% { transform: rotate(4.8deg); }
  54.55% { transform: rotate(-4deg); }
  63.64% { transform: rotate(3.2deg); }
  72.73% { transform: rotate(-2.4deg); }
  81.82% { transform: rotate(1.6deg); }
  90.91% { transform: rotate(-0.8deg); }
  100% { transform: rotate(0deg); }
}

.onoma-gashigashi {
  animation: onoma-gashigashi 0.6s ease-in-out both;
}

/* Reduced motion: no motion */
@media (prefers-reduced-motion: reduce) {
  .onoma-gashigashi { animation: none; }
}