feat: enhance UI components and layout styling

- Updated FeatureDescription text size to be larger on desktop (lg:text-base)
- Added rounded corners (rounded-3xl) to DarkCard component
- Modified CloudArchitecture section with wider container (max-w-5xl) and updated heading styles
- Adjusted mobile feature navigation indicators with darker colors (bg-gray-600/700)
- Improved hero section typography using H2 and H5 components for better hierarchy
- Refined padding and background styling in CloudFeatures mobile

src/components/ui/cards.tsx

@@ -8,7 +8,7 @@ const DarkCard = React.forwardRef<
   <div
     ref={ref}
     className={cn(
-      "border border-white/10 bg-white/3 p-8 backdrop-blur-sm transition hover:-translate-y-1 hover:border-cyan-300/50 hover:bg-white/6 hover:scale-105 hover:shadow-lg hover:shadow-cyan-500/15",
+      "border border-white/10 bg-white/3 p-8 backdrop-blur-sm transition hover:-translate-y-1 hover:border-cyan-300/50 rounded-3xl hover:bg-white/6 hover:scale-105 hover:shadow-lg hover:shadow-cyan-500/15",
       className
     )}
     {...props}