Fix(UI): Fix security page routing and standardize marketing CTA card styles

src/App.tsx

@@ -172,7 +172,7 @@ function AppRoutes() {
         <Route element={<ProtectedLayout />}>
           {/* User routes */}
           <Route path="/profile" element={<ProfilePage />} />
-          <Route path="/security" element={<SecurityPage />} />
+          <Route path="/account/security" element={<UserSecurityPage />} />
           <Route path="/linked-accounts" element={<LinkedAccountsPage />} />
           <Route path="/activity" element={<ActivityPage />} />
           <Route path="/ssh-keys" element={<SSHKeysPage />} />