refactor: remove dark mode styling from agent and home pages

- Simplified styling by removing dark mode classes (dark:bg-*, dark:text-*, dark:border-*)
- Added explicit text color classes for better consistency
- Fixed animation container layout with proper centering and sizing

src/pages/nodes/NodeHero.tsx

@@ -18,7 +18,7 @@ export function NodeHero() {
             <H3 as="h1" className="mt-4">
               Host a Node. Power the Network.
             </H3>
-            <p className="mt-6 text-lg">
+            <p className="mt-6 text-lg text-gray-800">
               The Mycelium Network runs on nodes hosted by people and organizations around the world. Each node adds capacity, resilience, and sovereignty, expanding a global network for private, distributed compute and AI. 
             </p>
             <div className="mt-10 flex items-center gap-x-6">