diff --git a/PROJECT_CONTEXT.md b/PROJECT_CONTEXT.md
index 6d76a7c..aba74be 100644
--- a/PROJECT_CONTEXT.md
+++ b/PROJECT_CONTEXT.md
@@ -58,11 +58,13 @@ Modulspezifische Assets:
 7) UI-Naming und Seitenaufbau
 - `Seitenheader-Box`: oberste globale Header-Box mit Seitentitel, Login und Farbschema.
 - `Submenü-Box`: Box direkt unter der Seitenheader-Box für modul- oder seitenbezogene Aktionen.
+- `Submenü-Aktionen`: rechtsbündige Zusatzbuttons innerhalb der Submenü-Box, z.B. `Setup`, `Nexus Übersicht` oder `Zur Startseite`-Ersatz.
 - `Bereichs-Box`: größere Inhaltsbox für einen zusammenhängenden Seitenbereich.
 - `Karten-Box`: kleinere Karte auf derselben Ebene wie Bereichs-Boxen, meist in Grids.
 - Zentrale CSS-Klassen:
   - `main-header-box`
   - `submenu-box`
+  - `module-submenu-actions`
   - `section-box`
   - `card-box`
 - Modulseiten sollen diesem Muster folgen:
@@ -70,6 +72,7 @@ Modulspezifische Assets:
   - danach Submenü-Box
   - danach Bereichs-Boxen und/oder Karten-Boxen je nach Modul
 - `Setup` gehört in Modulen grundsätzlich in die Submenü-Box.
+- In Verwaltungsseiten soll `Nexus Übersicht` als fester Button in den Submenü-Aktionen vorhanden sein.
 - Beispielstruktur:
   - Börsenchecker: Seitenheader-Box, Submenü-Box, Bereichs-Box, Karten-Boxen, Bereichs-Box
   - FX-Rates: Seitenheader-Box, Submenü-Box, danach Bereichs-Boxen
diff --git a/README.md b/README.md
index 0c1c540..778eb6c 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@ Für die Oberfläche gilt projektweit dieses Naming:
 
 - `Seitenheader-Box`: globaler Header mit Seitentitel, Login und Farbschema
 - `Submenü-Box`: zusätzliche modul- oder seitenbezogene Aktionen direkt unter dem Seitenheader; `Setup` soll in Modulen immer vorhanden sein
+- `Submenü-Aktionen`: rechtsbündige Zusatzbuttons innerhalb der Submenü-Box, z.B. `Setup` oder `Nexus Übersicht`
 - `Bereichs-Box`: größere Inhaltsbox für einen zusammenhängenden Bereich; davon können beliebig viele untereinander folgen
 - `Karten-Box`: kleinere Inhaltskarte auf derselben Ebene wie Bereichs-Boxen, typischerweise innerhalb eines Grids für Kennzahlen, Statistiken oder Modulübersichten
 
@@ -14,6 +15,7 @@ Zentrale CSS-Klassen für dieses Layout:
 
 - `main-header-box`
 - `submenu-box`
+- `module-submenu-actions`
 - `section-box`
 - `card-box`
 
diff --git a/partials/landingpages/modules/index.php b/partials/landingpages/modules/index.php
index c5d319c..203d08b 100644
--- a/partials/landingpages/modules/index.php
+++ b/partials/landingpages/modules/index.php
@@ -67,7 +67,8 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
         <a class="module-button module-button--tab-active" href="/modules">Aktive Module</a>
         <a class="module-button module-button--tab" href="/modules/install">Module installieren/aktivieren</a>
       </nav>
-      <div class="module-hero-actions">
+      <div class="module-submenu-actions">
+        <a class="module-button module-button--secondary module-button--small" href="/">Nexus Übersicht</a>
         <a class="module-button module-button--secondary module-button--small" href="/modules/sql-import">Zentralen SQL-Import öffnen</a>
       </div>
     </div>
diff --git a/partials/landingpages/modules/install.php b/partials/landingpages/modules/install.php
index fa32493..9581ee7 100644
--- a/partials/landingpages/modules/install.php
+++ b/partials/landingpages/modules/install.php
@@ -2,6 +2,11 @@
 $modules = modules()->all();
 $error = null;
 $notice = null;
+$GLOBALS['layout_header_base_title'] = 'Modulverwaltung';
+$GLOBALS['layout_header_title'] = 'Modulverwaltung';
+$GLOBALS['layout_header_context'] = 'Module installieren/aktivieren';
+$GLOBALS['layout_header_text'] = '';
+$GLOBALS['layout_header_actions'] = [];
 
 if ($_SERVER['REQUEST_METHOD'] === 'POST') {
     require_admin();
@@ -31,109 +36,129 @@ foreach ($modules as $m) {
 }
 ?>
 <?php require_auth(); ?>
-<div class="card">
-  <div class="pill">Module</div>
-  <h1 style="margin-top:.75rem;">Module installieren/aktivieren</h1>
-  <p class="muted">Erkannte Module basieren auf Ordnern in <code>modules/</code>.</p>
-  <p style="margin-top:.75rem;">
-    <a class="nav-link" href="/modules/sql-import">Zentralen SQL-Import öffnen</a>
-  </p>
-
+<div class="module-flow">
   <?php if ($error): ?>
-    <div class="bg-red-900 border-l-4 border-red-500 text-red-100 p-4 mb-6" role="alert">
+    <div class="module-box-soft bg-red-900 border-l-4 border-red-500 text-red-100" role="alert">
       <?= e($error) ?>
     </div>
   <?php elseif ($notice): ?>
-    <div class="card" style="margin-top:1rem; border-color:var(--accent-2);">
+    <div class="module-box-soft" style="border-color:var(--accent-2);">
       <?= e($notice) ?>
     </div>
   <?php endif; ?>
 
-  <h3 style="margin-top:1.25rem;">Aktive Module</h3>
-  <div class="module-admin-grid module-admin-grid--compact">
-    <?php foreach ($active as $module): ?>
-      <?php
-        $migrationStatus = modules()->migrationStatus($module['name']);
-        $pendingMigrations = $migrationStatus['pending'] ?? [];
-        $migrationLabel = $pendingMigrations !== []
-            ? count($pendingMigrations) . ' ausstehend'
-            : (($migrationStatus['available'] ?? 0) > 0 ? 'Schema aktuell' : 'Keine Migrationen');
-      ?>
-      <article class="module-admin-card">
-        <div class="module-admin-card__head">
-          <div class="module-admin-card__title">
-            <h2><?= e($module['title']) ?></h2>
-            <p><?= e($module['description'] ?? '') ?></p>
-          </div>
-        </div>
-        <div class="module-admin-meta">
-          <div class="module-admin-meta__item">
-            <span class="module-admin-meta__label">Status</span>
-            <strong class="module-admin-badge module-admin-badge--success">Aktiv</strong>
-          </div>
-          <div class="module-admin-meta__item">
-            <span class="module-admin-meta__label">Migrationen</span>
-            <strong class="module-admin-badge<?= $pendingMigrations !== [] ? ' module-admin-badge--accent' : (($migrationStatus['available'] ?? 0) > 0 ? ' module-admin-badge--success' : '') ?>"><?= e($migrationLabel) ?></strong>
-          </div>
-        </div>
-        <div class="module-admin-actions">
-          <a class="nav-link" href="/module/<?= e($module['name']) ?>">Öffnen</a>
-          <?php if ($pendingMigrations !== []): ?>
-            <form method="post" style="margin:0;">
-              <input type="hidden" name="module" value="<?= e($module['name']) ?>">
-              <button class="cta-button" name="action" value="migrate">Migrationen anwenden</button>
-            </form>
-          <?php endif; ?>
-          <form method="post" style="margin:0;">
-            <input type="hidden" name="module" value="<?= e($module['name']) ?>">
-            <button class="cta-button" name="action" value="disable" style="background:var(--panel); color:var(--text);">Deaktivieren</button>
-          </form>
-        </div>
-      </article>
-    <?php endforeach; ?>
+  <div class="submenu-box">
+    <div class="module-hero-top module-hero-top--compact">
+      <nav class="module-tabs" aria-label="Modulverwaltung">
+        <a class="module-button module-button--tab" href="/modules">Aktive Module</a>
+        <a class="module-button module-button--tab-active" href="/modules/install">Module installieren/aktivieren</a>
+      </nav>
+      <div class="module-submenu-actions">
+        <a class="module-button module-button--secondary module-button--small" href="/">Nexus Übersicht</a>
+        <a class="module-button module-button--secondary module-button--small" href="/modules/sql-import">Zentralen SQL-Import öffnen</a>
+      </div>
+    </div>
   </div>
 
-  <h3 style="margin-top:1.5rem;">Deaktivierte Module</h3>
-  <div class="module-admin-grid module-admin-grid--compact">
-    <?php foreach ($inactive as $module): ?>
-      <?php
-        $migrationStatus = modules()->migrationStatus($module['name']);
-        $pendingMigrations = $migrationStatus['pending'] ?? [];
-        $migrationLabel = $pendingMigrations !== []
-            ? count($pendingMigrations) . ' ausstehend'
-            : (($migrationStatus['available'] ?? 0) > 0 ? 'Schema aktuell' : 'Keine Migrationen');
-      ?>
-      <article class="module-admin-card">
-        <div class="module-admin-card__head">
-          <div class="module-admin-card__title">
-            <h2><?= e($module['title']) ?></h2>
-            <p><?= e($module['description'] ?? '') ?></p>
+  <section class="section-box">
+    <div class="module-box-head">
+      <div>
+        <h2 class="module-box-title">Aktive Module</h2>
+        <p>Bereits aktivierte Module mit optionalen Migrationsschritten.</p>
+      </div>
+    </div>
+    <div class="module-admin-grid module-admin-grid--compact">
+      <?php foreach ($active as $module): ?>
+        <?php
+          $migrationStatus = modules()->migrationStatus($module['name']);
+          $pendingMigrations = $migrationStatus['pending'] ?? [];
+          $migrationLabel = $pendingMigrations !== []
+              ? count($pendingMigrations) . ' ausstehend'
+              : (($migrationStatus['available'] ?? 0) > 0 ? 'Schema aktuell' : 'Keine Migrationen');
+        ?>
+        <article class="card-box module-admin-card">
+          <div class="module-admin-card__head">
+            <div class="module-admin-card__title">
+              <h2><?= e($module['title']) ?></h2>
+              <p><?= e($module['description'] ?? '') ?></p>
+            </div>
           </div>
-        </div>
-        <div class="module-admin-meta">
-          <div class="module-admin-meta__item">
-            <span class="module-admin-meta__label">Status</span>
-            <strong class="module-admin-badge">Deaktiviert</strong>
+          <div class="module-admin-meta">
+            <div class="module-admin-meta__item">
+              <span class="module-admin-meta__label">Status</span>
+              <strong class="module-admin-badge module-admin-badge--success">Aktiv</strong>
+            </div>
+            <div class="module-admin-meta__item">
+              <span class="module-admin-meta__label">Migrationen</span>
+              <strong class="module-admin-badge<?= $pendingMigrations !== [] ? ' module-admin-badge--accent' : (($migrationStatus['available'] ?? 0) > 0 ? ' module-admin-badge--success' : '') ?>"><?= e($migrationLabel) ?></strong>
+            </div>
           </div>
-          <div class="module-admin-meta__item">
-            <span class="module-admin-meta__label">Migrationen</span>
-            <strong class="module-admin-badge<?= $pendingMigrations !== [] ? ' module-admin-badge--accent' : (($migrationStatus['available'] ?? 0) > 0 ? ' module-admin-badge--success' : '') ?>"><?= e($migrationLabel) ?></strong>
-          </div>
-        </div>
-        <div class="module-admin-actions">
-          <a class="nav-link" href="/modules/setup/<?= e($module['name']) ?>">Setup</a>
-          <?php if ($pendingMigrations !== []): ?>
+          <div class="module-admin-actions">
+            <a class="nav-link" href="/module/<?= e($module['name']) ?>">Öffnen</a>
+            <?php if ($pendingMigrations !== []): ?>
+              <form method="post" style="margin:0;">
+                <input type="hidden" name="module" value="<?= e($module['name']) ?>">
+                <button class="cta-button" name="action" value="migrate">Migrationen anwenden</button>
+              </form>
+            <?php endif; ?>
             <form method="post" style="margin:0;">
               <input type="hidden" name="module" value="<?= e($module['name']) ?>">
-              <button class="cta-button" name="action" value="migrate">Migrationen anwenden</button>
+              <button class="cta-button" name="action" value="disable" style="background:var(--panel); color:var(--text);">Deaktivieren</button>
             </form>
-          <?php endif; ?>
-          <form method="post" style="margin:0;">
-            <input type="hidden" name="module" value="<?= e($module['name']) ?>">
-            <button class="cta-button" name="action" value="enable">Aktivieren</button>
-          </form>
-        </div>
-      </article>
-    <?php endforeach; ?>
-  </div>
+          </div>
+        </article>
+      <?php endforeach; ?>
+    </div>
+  </section>
+
+  <section class="section-box">
+    <div class="module-box-head">
+      <div>
+        <h2 class="module-box-title">Deaktivierte Module</h2>
+        <p>Erkannte Module basieren auf Ordnern in <code>modules/</code>.</p>
+      </div>
+    </div>
+    <div class="module-admin-grid module-admin-grid--compact">
+      <?php foreach ($inactive as $module): ?>
+        <?php
+          $migrationStatus = modules()->migrationStatus($module['name']);
+          $pendingMigrations = $migrationStatus['pending'] ?? [];
+          $migrationLabel = $pendingMigrations !== []
+              ? count($pendingMigrations) . ' ausstehend'
+              : (($migrationStatus['available'] ?? 0) > 0 ? 'Schema aktuell' : 'Keine Migrationen');
+        ?>
+        <article class="card-box module-admin-card">
+          <div class="module-admin-card__head">
+            <div class="module-admin-card__title">
+              <h2><?= e($module['title']) ?></h2>
+              <p><?= e($module['description'] ?? '') ?></p>
+            </div>
+          </div>
+          <div class="module-admin-meta">
+            <div class="module-admin-meta__item">
+              <span class="module-admin-meta__label">Status</span>
+              <strong class="module-admin-badge">Deaktiviert</strong>
+            </div>
+            <div class="module-admin-meta__item">
+              <span class="module-admin-meta__label">Migrationen</span>
+              <strong class="module-admin-badge<?= $pendingMigrations !== [] ? ' module-admin-badge--accent' : (($migrationStatus['available'] ?? 0) > 0 ? ' module-admin-badge--success' : '') ?>"><?= e($migrationLabel) ?></strong>
+            </div>
+          </div>
+          <div class="module-admin-actions">
+            <a class="nav-link" href="/modules/setup/<?= e($module['name']) ?>">Setup</a>
+            <?php if ($pendingMigrations !== []): ?>
+              <form method="post" style="margin:0;">
+                <input type="hidden" name="module" value="<?= e($module['name']) ?>">
+                <button class="cta-button" name="action" value="migrate">Migrationen anwenden</button>
+              </form>
+            <?php endif; ?>
+            <form method="post" style="margin:0;">
+              <input type="hidden" name="module" value="<?= e($module['name']) ?>">
+              <button class="cta-button" name="action" value="enable">Aktivieren</button>
+            </form>
+          </div>
+        </article>
+      <?php endforeach; ?>
+    </div>
+  </section>
 </div>
diff --git a/partials/landingpages/modules/sql_import.php b/partials/landingpages/modules/sql_import.php
index d160bc9..53e55e5 100644
--- a/partials/landingpages/modules/sql_import.php
+++ b/partials/landingpages/modules/sql_import.php
@@ -1,6 +1,12 @@
 <?php
 require_admin();
 
+$GLOBALS['layout_header_base_title'] = 'Modulverwaltung';
+$GLOBALS['layout_header_title'] = 'Modulverwaltung';
+$GLOBALS['layout_header_context'] = 'SQL-Import';
+$GLOBALS['layout_header_text'] = '';
+$GLOBALS['layout_header_actions'] = [];
+
 $service = new \App\ModuleSqlImportService(modules());
 $availableModules = $service->importableModules();
 $selectedModule = (string) ($_POST['module'] ?? ($_GET['module'] ?? ''));
@@ -11,7 +17,7 @@ $result = null;
 if ($_SERVER['REQUEST_METHOD'] === 'POST') {
     try {
         if (!isset($_FILES['sql_file']) || !is_array($_FILES['sql_file'])) {
-            throw new RuntimeException('Bitte eine SQL-Datei auswaehlen.');
+            throw new RuntimeException('Bitte eine SQL-Datei auswählen.');
         }
 
         $result = $service->importUploadedFile($selectedModule, $_FILES['sql_file']);
@@ -27,68 +33,98 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
     }
 }
 ?>
-<div class="card">
-  <div class="pill">SQL Import</div>
-  <h1 style="margin-top:.75rem;">Zentraler SQL-Import fuer Module</h1>
-  <p class="muted">
-    Diese Seite ist eine gemeinsame Standard-Loesung. Module koennen sie direkt nutzen oder weiterhin einen eigenen spezialisierten Uploader bereitstellen.
-  </p>
-
+<div class="module-flow">
   <?php if ($error): ?>
-    <div class="bg-red-900 border-l-4 border-red-500 text-red-100 p-4 mb-6" role="alert">
+    <div class="module-box-soft bg-red-900 border-l-4 border-red-500 text-red-100" role="alert">
       <?= e($error) ?>
     </div>
   <?php elseif ($notice): ?>
-    <div class="card" style="margin-top:1rem; border-color:var(--accent-2);">
+    <div class="module-box-soft" style="border-color:var(--accent-2);">
       <?= e($notice) ?>
     </div>
   <?php endif; ?>
 
-  <?php if ($availableModules === []): ?>
-    <div class="card" style="margin-top:1rem; background:var(--panel-2);">
-      Aktuell ist kein Modul fuer den generischen SQL-Import vorbereitet.
-    </div>
-  <?php else: ?>
-    <form method="post" enctype="multipart/form-data" class="card" style="margin-top:1rem; background:var(--panel-2);">
-      <div style="display:grid; gap:1rem;">
-        <label style="display:grid; gap:.35rem;">
-          <span>Modul</span>
-          <select name="module" required>
-            <option value="">Bitte waehlen</option>
-            <?php foreach ($availableModules as $module): ?>
-              <option value="<?= e($module['name']) ?>" <?= $selectedModule === $module['name'] ? 'selected' : '' ?>>
-                <?= e($module['title']) ?>
-              </option>
-            <?php endforeach; ?>
-          </select>
-        </label>
-
-        <label style="display:grid; gap:.35rem;">
-          <span>SQL-Datei</span>
-          <input type="file" name="sql_file" accept=".sql,text/sql,application/sql" required>
-        </label>
-
-        <div class="muted" style="font-size:.95rem;">
-          Der generische Import nutzt die Standard-Datenbankverbindung des Moduls oder einen optionalen Modul-Callback fuer Spezialfaelle.
-        </div>
-
-        <div style="display:flex; gap:10px; flex-wrap:wrap;">
-          <button class="cta-button" type="submit">SQL importieren</button>
-          <a class="nav-link" href="/modules/install">Zur Modulverwaltung</a>
-        </div>
+  <div class="submenu-box">
+    <div class="module-hero-top module-hero-top--compact">
+      <nav class="module-tabs" aria-label="Modulverwaltung">
+        <a class="module-button module-button--tab" href="/modules">Aktive Module</a>
+        <a class="module-button module-button--tab" href="/modules/install">Module installieren/aktivieren</a>
+        <a class="module-button module-button--tab-active" href="/modules/sql-import">SQL-Import</a>
+      </nav>
+      <div class="module-submenu-actions">
+        <a class="module-button module-button--secondary module-button--small" href="/">Nexus Übersicht</a>
       </div>
-    </form>
+    </div>
+  </div>
 
-    <div style="margin-top:1.25rem;" class="grid">
-      <?php foreach ($availableModules as $module): ?>
-        <div class="card" style="background:var(--panel-2);">
-          <strong><?= e($module['title']) ?></strong>
-          <div class="muted" style="font-size:.85rem;"><?= e($module['description']) ?></div>
-          <div style="margin-top:.75rem;">
-            <a class="nav-link" href="/modules/sql-import?module=<?= e($module['name']) ?>">Fuer dieses Modul importieren</a>
+  <section class="section-box">
+    <div class="module-box-head">
+      <div>
+        <h2 class="module-box-title">Zentraler SQL-Import</h2>
+        <p>Gemeinsame Standard-Lösung für Module mit SQL-Upload in die konfigurierte Ziel-Datenbank.</p>
+      </div>
+    </div>
+
+    <?php if ($availableModules === []): ?>
+      <div class="card-box">
+        Aktuell ist kein Modul für den generischen SQL-Import vorbereitet.
+      </div>
+    <?php else: ?>
+      <form method="post" enctype="multipart/form-data" class="section-box" style="padding:0; border:0; box-shadow:none; background:transparent;">
+        <div style="display:grid; gap:1rem;">
+          <label style="display:grid; gap:.35rem;">
+            <span>Modul</span>
+            <select name="module" required>
+              <option value="">Bitte wählen</option>
+              <?php foreach ($availableModules as $module): ?>
+                <option value="<?= e($module['name']) ?>" <?= $selectedModule === $module['name'] ? 'selected' : '' ?>>
+                  <?= e($module['title']) ?>
+                </option>
+              <?php endforeach; ?>
+            </select>
+          </label>
+
+          <label style="display:grid; gap:.35rem;">
+            <span>SQL-Datei</span>
+            <input type="file" name="sql_file" accept=".sql,text/sql,application/sql" required>
+          </label>
+
+          <div class="muted" style="font-size:.95rem;">
+            Der generische Import nutzt die Standard-Datenbankverbindung des Moduls oder einen optionalen Modul-Callback für Spezialfälle.
+          </div>
+
+          <div style="display:flex; gap:10px; flex-wrap:wrap;">
+            <button class="cta-button" type="submit">SQL importieren</button>
+            <a class="nav-link" href="/modules">Aktive Module öffnen</a>
           </div>
         </div>
-      <?php endforeach; ?>
-    </div>
+      </form>
+    <?php endif; ?>
+  </section>
+
+  <?php if ($availableModules !== []): ?>
+    <section class="section-box">
+      <div class="module-box-head">
+        <div>
+          <h2 class="module-box-title">Importierbare Module</h2>
+          <p>Schnelleinstieg für den Import mit bereits vorausgewähltem Modul.</p>
+        </div>
+      </div>
+      <div class="module-admin-grid module-admin-grid--compact">
+        <?php foreach ($availableModules as $module): ?>
+          <article class="card-box module-admin-card">
+            <div class="module-admin-card__head">
+              <div class="module-admin-card__title">
+                <h2><?= e($module['title']) ?></h2>
+                <p><?= e($module['description']) ?></p>
+              </div>
+            </div>
+            <div class="module-admin-actions">
+              <a class="nav-link" href="/modules/sql-import?module=<?= e($module['name']) ?>">Für dieses Modul importieren</a>
+            </div>
+          </article>
+        <?php endforeach; ?>
+      </div>
+    </section>
   <?php endif; ?>
 </div>
diff --git a/public/assets/css/app.css b/public/assets/css/app.css
index 80518dd..579d846 100644
--- a/public/assets/css/app.css
+++ b/public/assets/css/app.css
@@ -1136,7 +1136,8 @@ body.has-modal-open {
 }
 
 .module-hero-copy,
-.module-hero-actions {
+.module-hero-actions,
+.module-submenu-actions {
   display: grid;
   gap: 8px;
 }
@@ -1216,7 +1217,8 @@ body.has-modal-open {
   font-size: 0.92rem;
 }
 
-.module-hero-actions {
+.module-hero-actions,
+.module-submenu-actions {
   justify-items: start;
   align-content: start;
   width: min(240px, 100%);
@@ -1398,7 +1400,8 @@ body.has-modal-open {
     flex-direction: column;
   }
 
-  .module-hero-actions {
+  .module-hero-actions,
+  .module-submenu-actions {
     width: 100%;
   }
 
diff --git a/src/App/functions.php b/src/App/functions.php
index 81361e0..eeb8cf3 100644
--- a/src/App/functions.php
+++ b/src/App/functions.php
@@ -403,7 +403,7 @@ function module_shell_header(string $module, array $options = []): string
             $html .= '</nav>';
         }
         if ($actions !== []) {
-            $html .= '<div class="module-hero-actions">' . $renderActions($actions) . '</div>';
+            $html .= '<div class="module-hero-actions module-submenu-actions">' . $renderActions($actions) . '</div>';
         }
         $html .= '</div>';
     } elseif ($title !== '' || $description !== '' || !empty($options['show_eyebrow'])) {