feat: standardize button components and update GPU hero section

- Refactored Button component usage across hero sections to use consistent variant/color props instead of inline styles
- Added new cyan outline button variant with hover state styling
- Updated GPU hero section with new heading, condensed description, and dual CTA buttons
- Standardized button spacing and removed unnecessary whitespace in button text
- Modified Button component type definitions to support cyan color in outline variant

src/pages/cloud/CloudHeroAlt.tsx

@@ -21,12 +21,8 @@ export function CloudHeroAlt() {
              Mycelium Cloud blends deterministic compute with quantum-safe storage, delivering a sovereign platform built for zero-ops automation.
           </p>
           <div className="mt-8">
-            <Button
-              href="#"
-              className="inline-flex rounded-xl bg-cyan-500 px-3.5 py-2.5 text-sm font-semibold text-white shadow-xs hover:bg-cyan-600 focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-cyan-600"
-            >
-              {' '}
-              Experience Deterministic Compute{' '}
+            <Button href="#" variant="solid" color="cyan">
+              Experience Deterministic Compute
             </Button>
           </div>
         </div>