refactor: standardize background color from off-white to pure white across multiple components

- Changed bg-[#FDFDFD] to bg-white in AgentPro, CloudPros, and PodsPro intro sections
- Added explicit bg-white class to PodsFeatures Container component for consistency

src/pages/agents/AgentPro.tsx

@@ -36,7 +36,7 @@ export function AgentPro() {
       <div className="w-full border-t border-l border-r border-gray-100" />
 
       {/* Intro Block */}
-      <div className="bg-[#FDFDFD] w-full max-w-7xl mx-auto border border-t-0 border-b-0 border-gray-100">
+      <div className="bg-white w-full max-w-7xl mx-auto border border-t-0 border-b-0 border-gray-100">
         <div className="px-8 py-12 max-w-4xl mx-auto flex flex-col items-center justify-center min-h-[220px] text-center">
           <Eyebrow className="text-cyan-500">
             Advantages