body { font-family: 'Noto Sans JP', sans-serif; }
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
.animate-bounce { animation: bounce 1s infinite; }
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.animate-spin { animation: spin 0.8s linear infinite; }
#mobile-menu { display: none; }
#mobile-menu.open { display: flex; }