refactor: simplify product section content and layout

- Condensed GPU Architecture section from detailed bullet points to concise three-pillar overview
- Removed redundant descriptive paragraphs from Capabilities and Design sections
- Streamlined Network Hero messaging and added standalone/integrated positioning
- Created new NetworkCapabilities component with four-column grid layout

src/pages/gpu/GpuDesign.tsx

@@ -34,10 +34,7 @@ export function GpuDesign() {
         <div className="mx-auto max-w-3xl sm:text-center">
           <Eyebrow>CORE VALUE</Eyebrow>
           <H3 className="mt-4 text-gray-900">GPU Power You Actually Control</H3>
-          <P className="mt-6 text-gray-600">
-            Mycelium GPU gives you access to real hardware, not gated queues or
-            proprietary runtimes.
-          </P>
+
         </div>
 
         {/* Key Benefits */}