refactor: adjust spacing and text styling in network feature components

- Reduced NetworkCapabilities description margin from mt-3 to mt-2 and removed text-lg class
- Changed PrimaryFeatures mobile description from color="secondary" to text-gray-200 with mt-2 (note: appears to have typo "mt-" instead of "mt-2")

src/pages/network/NetworkCapabilities.tsx

@@ -30,7 +30,7 @@ export function NetworkCapabilities() {
             One network for all your connectivity needs.
           </P>
 
-          <P className="mt-3 text-lg text-gray-200">
+          <P className="mt-2 text-gray-200">
             Mycelium replaces separate layers like VPNs, hosting, and DNS with a single encrypted, peer-to-peer system that links devices, apps, and environments directly.
           </P>
         </div>

src/pages/network/PrimaryFeatures.tsx

@@ -369,7 +369,7 @@ function FeaturesMobile() {
                 <MobileFeatureTitle color="white" className="mt-6">
                   {feature.name}
                 </MobileFeatureTitle>
-                <FeatureDescription color="secondary" className="mt-2">
+                <FeatureDescription  className="mt- text-gray-200">
                   {feature.description}
                 </FeatureDescription>
               </div>