refactor: adjust spacing and styling across multiple components for visual consistency

- Increased HomeAurora subtitle margin from mt-4 to mt-6 for better spacing
- Added bg-white to HomeDesign content container for explicit background
- Removed bg-white from HomeTab top separator div
- Reduced network Hero title margin from mt-8 to mt-4 and second paragraph margin from mt-6 to mt-4
- Changed network Hero secondary button variant from cyan to dark
- Reduced NetworkPros title margin from mt-4 to mt-2

src/pages/home/HomeDesign.tsx

@@ -34,7 +34,7 @@ export function HomeDesign() {
       <div className="w-full border border-l border-r  border-gray-100" />
 
       {/* Content */}
-      <div className="mx-auto max-w-7xl border border-t-0 border-b-0 border-gray-100">
+      <div className="mx-auto max-w-7xl border border-t-0 border-b-0 bg-white border-gray-100">
         {/* Centered intro */}
         <div className="px-6 pt-12 pb-4 text-center max-w-4xl mx-auto ">
           <Eyebrow className="text-cyan-500">