Design Updates (#379)

* Enhance Marketing Pages and UI Components

- Updated the marketing homepage to include an Ecosystem Showcase component, improving the presentation of the SaaS Starter Kit.
- Refined various UI components, including adjustments to spacing, typography, and layout for better visual consistency.
- Improved accessibility by adding aria-labels and ensuring proper semantic structure in components.
- Adjusted styles across multiple components to enhance responsiveness and user experience.
- Updated the pricing table and feature cards to align with the new design standards, ensuring a cohesive look and feel throughout the application.
- Updated plan picker design

packages/ui/src/shadcn/card.tsx

@@ -7,7 +7,7 @@ const Card: React.FC<React.HTMLAttributes<HTMLDivElement>> = ({
   ...props
 }) => (
   <div
-    className={cn('bg-card text-card-foreground rounded-xl border', className)}
+    className={cn('bg-card text-card-foreground rounded-lg border', className)}
     {...props}
   />
 );