diff --git a/modules/shared/auth/ui/home.php b/modules/shared/auth/ui/home.php
index 91936cf..6f11130 100644
--- a/modules/shared/auth/ui/home.php
+++ b/modules/shared/auth/ui/home.php
@@ -5,6 +5,16 @@ require_once __DIR__ . '/../service.php';
 
 function render_auth_home_page(array $user): void
 {
+    $moduleNavigation = json_encode(
+        [
+            'Übersicht' => [],
+            'ERP' => ['Bestellungen', 'Lager', 'Kontakte'],
+            'Buchhaltung' => [],
+            'Kundenberatung' => [],
+        ],
+        JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES
+    );
+
     echo '<!doctype html>';
     echo '<html lang="de">';
     echo '<head>';
@@ -47,15 +57,13 @@ function render_auth_home_page(array $user): void
     echo '<div class="sg-left-navigation-pattern__layout" aria-label="Left Navigation Demo">';
     echo '<aside class="sg-group-card sg-left-navigation-pattern__group-card sg-left-navigation-pattern__group-card--navigation" data-component="group-card" aria-label="Navigation">';
     echo '<div class="sg-group-card__header-row sg-left-navigation-pattern__header-row">';
-    echo '<h2 class="sg-heading-h2 sg-text-on-dark sg-group-card__heading">Navigation</h2>';
+    echo '<h2 class="sg-heading-h2 sg-text-on-dark sg-group-card__heading" data-left-navigation-title aria-live="polite">ERP</h2>';
     echo '<button class="sg-interaction-element sg-button sg-button--active sg-left-navigation-pattern__toggle" type="button" data-left-navigation-toggle aria-expanded="true" aria-controls="left-navigation-menu">Ausblenden</button>';
     echo '</div>';
     echo '<nav class="sg-tab-button-group" id="left-navigation-menu" role="tablist" aria-label="Linksmenue Items" data-component="tab-navigation" data-component-size="large" data-component-variant="linksmenu-items">';
-    echo '<button class="sg-interaction-element sg-button sg-tab-button" type="button" role="tab" aria-selected="true" data-component-part="tab-button">Übersicht</button>';
-    echo '<button class="sg-interaction-element sg-button sg-tab-button" type="button" role="tab" aria-selected="false" data-component-part="tab-button">Kontakte</button>';
-    echo '<button class="sg-interaction-element sg-button sg-tab-button" type="button" role="tab" aria-selected="false" data-component-part="tab-button">Bestellungen</button>';
+    echo '<button class="sg-interaction-element sg-button sg-tab-button" type="button" role="tab" aria-selected="true" data-component-part="tab-button">Bestellungen</button>';
     echo '<button class="sg-interaction-element sg-button sg-tab-button" type="button" role="tab" aria-selected="false" data-component-part="tab-button">Lager</button>';
-    echo '<button class="sg-interaction-element sg-button sg-tab-button" type="button" role="tab" aria-selected="false" data-component-part="tab-button">Einstellungen</button>';
+    echo '<button class="sg-interaction-element sg-button sg-tab-button" type="button" role="tab" aria-selected="false" data-component-part="tab-button">Kontakte</button>';
     echo '</nav>';
     echo '</aside>';
     echo '<section class="sg-group-card sg-left-navigation-pattern__group-card sg-left-navigation-pattern__group-card--content" data-component="group-card" aria-hidden="true"></section>';
@@ -63,6 +71,32 @@ function render_auth_home_page(array $user): void
     echo '</section>';
     echo '</section>';
     echo '<script>';
+    echo 'const portalModuleNavigation = ' . $moduleNavigation . ';';
+    echo "const renderLeftNavigation = (moduleName) => {";
+    echo "  const title = document.querySelector('[data-left-navigation-title]');";
+    echo "  const menu = document.getElementById('left-navigation-menu');";
+    echo "  if (title) { title.textContent = moduleName; }";
+    echo "  if (!menu) { return; }";
+    echo "  const entries = portalModuleNavigation[moduleName] || [];";
+    echo "  menu.innerHTML = '';";
+    echo "  entries.forEach((entry, index) => {";
+    echo "    const button = document.createElement('button');";
+    echo "    button.className = 'sg-interaction-element sg-button sg-tab-button';";
+    echo "    button.type = 'button';";
+    echo "    button.setAttribute('role', 'tab');";
+    echo "    button.setAttribute('data-component-part', 'tab-button');";
+    echo "    button.setAttribute('aria-selected', String(index === 0));";
+    echo "    button.textContent = entry;";
+    echo "    menu.appendChild(button);";
+    echo "  });";
+    echo "  menu.querySelectorAll('.sg-tab-button').forEach((button) => {";
+    echo "    button.addEventListener('click', () => {";
+    echo "      menu.querySelectorAll('.sg-tab-button').forEach((otherButton) => {";
+    echo "        otherButton.setAttribute('aria-selected', String(otherButton === button));";
+    echo "      });";
+    echo "    });";
+    echo "  });";
+    echo "};";
     echo "document.querySelectorAll('.sg-portal-header__tabs').forEach((group) => {";
     echo "  group.querySelectorAll('.sg-tab-button').forEach((button) => {";
     echo "    button.addEventListener('click', () => {";
@@ -71,6 +105,7 @@ function render_auth_home_page(array $user): void
     echo "        otherButton.setAttribute('aria-selected', String(isActive));";
     echo "        otherButton.dataset.componentState = isActive ? 'active' : 'inactive';";
     echo "      });";
+    echo "      renderLeftNavigation(button.textContent.trim());";
     echo "    });";
     echo "  });";
     echo "});";
@@ -125,6 +160,7 @@ function render_auth_home_page(array $user): void
     echo "  syncMode();";
     echo "  mediaQuery.addEventListener('change', syncMode);";
     echo "})();";
+    echo "renderLeftNavigation('ERP');";
     echo '</script>';
     echo '</body>';
     echo '</html>';
