/* fade in */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* tag dot pulse — green */
@keyframes tag-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(0.5); }
}
f
/* float hero SVG */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* scroll arrow */
@keyframes bounce-arrow {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.2; }
  50% { transform: translateX(-50%) translateY(5px); opacity: 0.8; }
}

/* hero nodes */
@keyframes pulse-node {
  0%, 100% { r: 3; opacity: 0.5; }
  50% { r: 5; opacity: 1; }
}

.hero-node { animation: pulse-node 3s ease-in-out infinite; }