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/components/Button.tsx

@@ -17,6 +17,7 @@ const variantStyles = {
     green: 'bg-green-500 text-white hover:bg-green-600',
   },
   outline: {
+    cyan: 'border-cyan-500 text-cyan-500 hover:bg-cyan-50',
     gray: 'border-gray-300 text-gray-700 hover:border-cyan-500 active:border-cyan-500',
     white: 'border-gray-300 text-white hover:border-cyan-500 active:border-cyan-500',
   },
@@ -29,7 +30,7 @@ type ButtonProps = (
     }
   | {
       variant: 'outline'
-      color?: keyof typeof variantStyles.outline
+      color?: (keyof typeof variantStyles.outline) | 'cyan'
     }
 ) &
   (