Engineering 60fps 3D Cyber-Luxury Websites in Next.js 15

# Engineering 60fps 3D Websites in Next.js 15 Modern brands no longer settle for flat templates. At **Zentix (zentix.space)**, we pair Next.js 15 App Router with React Three Fiber to create interactive 3D neural cores that respond to user intent. ## Key Optimization Principles 1. **Adaptive DPR & Mobile Fallback:** Cap device pixel ratio at `[1, 1.75]` and reduce particle counts on low-power GPUs. 2. **Zero Cumulative Layout Shift (CLS):** Reserve explicit viewport containers before hydrating the WebGL canvas. 3. **Conversion-First Motion:** Every 3D interaction guides the visitor toward an action—whether opening the AI Consultant or launching the Project Estimator.