fix: remove duplicate CSS causing style conflicts

- Removed old translateZ() CSS that was overriding new translate3d() styles
- This was causing nodes to not display in correct 3D positions

src/styles/global.css

@@ -652,34 +652,6 @@ color: rgb(255 255 255 / .72);
   }
 }
 
-/* Floating animation for nodes */
-.node-marketing {
-  animation: float-1 6s ease-in-out infinite;
-}
-
-.node-ai {
-  animation: float-2 7s ease-in-out infinite;
-}
-
-.node-biz {
-  animation: float-3 8s ease-in-out infinite;
-}
-
-@keyframes float-1 {
-  0%, 100% { transform: translateZ(-150px) translateY(0); }
-  50% { transform: translateZ(-150px) translateY(-12px); }
-}
-
-@keyframes float-2 {
-  0%, 100% { transform: translateZ(-100px) translateY(0); }
-  50% { transform: translateZ(-100px) translateY(-10px); }
-}
-
-@keyframes float-3 {
-  0%, 100% { transform: translateZ(-200px) translateY(0); }
-  50% { transform: translateZ(-200px) translateY(-15px); }
-}
-
 /* Mobile responsive */
 @media (max-width: 620px) {
   .hero-neural {