diff --git a/backend/00-router.go b/backend/00-router.go
index 56ce059..4d7a33f 100644
--- a/backend/00-router.go
+++ b/backend/00-router.go
@@ -54,13 +54,14 @@ func renderShell(w http.ResponseWriter, active, readingPane string) {
 	fmt.Fprintf(w, `<!doctype html><html lang="de"><head><meta charset="utf-8">
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <title>Mail-Graveyard</title>
-<link rel="stylesheet" href="/static/style.css?v=20260712-4">
+<link rel="stylesheet" href="/static/style.css?v=20260712-6">
 <script src="/static/htmx.min.js"></script>
-<script src="/static/app.js?v=20260712-4" defer></script></head>
+<script src="/static/app.js?v=20260712-6" defer></script></head>
 <body class="ol2013">
 <header class="ribbon">
+  <button class="app-menu-button" type="button" aria-label="Mail-Graveyard-Menue" aria-expanded="false" data-backstage-toggle><span class="mail-logo" aria-hidden="true"></span></button>
   <nav class="ribbon-tabs">
-    <a class="tab %s" href="/view"><span class="mail-logo" aria-hidden="true"></span><span>Archiv-Boxen</span></a>
+    <a class="tab %s" href="/view">Archiv-Boxen</a>
     <a class="tab" href="/view">Import/Export</a>
     <a class="tab" href="/accounts">Postfach-Verwaltung</a>
     <a class="tab" href="/view">Mail-Transfer</a>
@@ -68,6 +69,14 @@ func renderShell(w http.ResponseWriter, active, readingPane string) {
   </nav>
   <div class="ribbon-title">Mail-Graveyard</div>
 </header>
+<aside class="backstage-menu" aria-label="Mail-Graveyard-Menue">
+  <a class="backstage-item active" href="/view">Archiv-Boxen</a>
+  <a class="backstage-item" href="/view">Import/Export</a>
+  <a class="backstage-item" href="/accounts">Postfach-Verwaltung</a>
+  <a class="backstage-item" href="/view">Mail-Transfer</a>
+  <a class="backstage-item" href="/accounts">Einstellungen</a>
+</aside>
+<button class="backstage-shade" type="button" aria-label="Menue schliessen" data-backstage-close></button>
 <div class="three-pane">
   <aside class="pane pane-tree" id="tree"
          hx-get="/view" hx-trigger="load" hx-target="#tree" hx-swap="innerHTML">
@@ -275,13 +284,14 @@ func renderAccountsPage(w http.ResponseWriter, accounts []Account, edit Account,
 	fmt.Fprintf(w, `<!doctype html><html lang="de"><head><meta charset="utf-8">
 <meta name="viewport" content="width=device-width,initial-scale=1">
 <title>Postfach-Verwaltung - Mail-Graveyard</title>
-<link rel="stylesheet" href="/static/style.css?v=20260712-5">
+<link rel="stylesheet" href="/static/style.css?v=20260712-6">
 <script src="/static/htmx.min.js"></script>
-<script src="/static/app.js?v=20260712-5" defer></script></head>
+<script src="/static/app.js?v=20260712-6" defer></script></head>
 <body class="ol2013">
 <header class="ribbon">
+  <button class="app-menu-button" type="button" aria-label="Mail-Graveyard-Menue" aria-expanded="false" data-backstage-toggle><span class="mail-logo" aria-hidden="true"></span></button>
   <nav class="ribbon-tabs">
-    <a class="tab" href="/view"><span class="mail-logo" aria-hidden="true"></span><span>Archiv-Boxen</span></a>
+    <a class="tab" href="/view">Archiv-Boxen</a>
     <a class="tab" href="/view">Import/Export</a>
     <a class="tab active" href="/accounts">Postfach-Verwaltung</a>
     <a class="tab" href="/view">Mail-Transfer</a>
@@ -289,6 +299,14 @@ func renderAccountsPage(w http.ResponseWriter, accounts []Account, edit Account,
   </nav>
   <div class="ribbon-title">Mail-Graveyard</div>
 </header>
+<aside class="backstage-menu" aria-label="Mail-Graveyard-Menue">
+  <a class="backstage-item" href="/view">Archiv-Boxen</a>
+  <a class="backstage-item" href="/view">Import/Export</a>
+  <a class="backstage-item active" href="/accounts">Postfach-Verwaltung</a>
+  <a class="backstage-item" href="/view">Mail-Transfer</a>
+  <a class="backstage-item" href="/accounts">Einstellungen</a>
+</aside>
+<button class="backstage-shade" type="button" aria-label="Menue schliessen" data-backstage-close></button>
 <main class="accounts-page">`)
 	if msg != "" {
 		fmt.Fprintf(w, `<div class="notice ok">%s</div>`, html.EscapeString(msg))
diff --git a/frontend-js/dist/app.js b/frontend-js/dist/app.js
index b038f82..a5008bf 100644
--- a/frontend-js/dist/app.js
+++ b/frontend-js/dist/app.js
@@ -93,6 +93,30 @@
   window.addEventListener("DOMContentLoaded", () => bind(document.querySelector(".three-pane")));
 })();
 
+(function () {
+  function setOpen(open) {
+    document.body.classList.toggle("backstage-open", open);
+    document.querySelectorAll("[data-backstage-toggle]").forEach((button) => {
+      button.setAttribute("aria-expanded", open ? "true" : "false");
+    });
+  }
+
+  document.addEventListener("click", (event) => {
+    const toggle = event.target.closest("[data-backstage-toggle]");
+    if (toggle) {
+      setOpen(!document.body.classList.contains("backstage-open"));
+      return;
+    }
+    if (event.target.closest("[data-backstage-close]")) {
+      setOpen(false);
+    }
+  });
+
+  document.addEventListener("keydown", (event) => {
+    if (event.key === "Escape") setOpen(false);
+  });
+})();
+
 (function () {
   function rowPayload(row) {
     return {
diff --git a/frontend-js/dist/style.css b/frontend-js/dist/style.css
index 6a85ac8..45d831b 100644
--- a/frontend-js/dist/style.css
+++ b/frontend-js/dist/style.css
@@ -32,13 +32,28 @@ body.ol2013 {
   color: #fff;
   display: flex;
   align-items: center;
-  gap: 24px;
-  padding: 0 16px;
+  gap: 12px;
+  padding: 0 16px 0 0;
   height: 44px;
   flex: 0 0 auto;
+  position: relative;
+  z-index: 20;
 }
 .ribbon-title { margin-left: auto; font-weight: 700; font-size: 15px; letter-spacing: .2px; }
 .ribbon-tabs { display: flex; gap: 2px; height: 100%; }
+.app-menu-button {
+  width: 54px;
+  height: 44px;
+  border: 0;
+  background: var(--ol-blue-dark);
+  color: #fff;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  cursor: pointer;
+}
+.app-menu-button:hover,
+.app-menu-button[aria-expanded="true"] { background: #00365f; }
 .tab {
   display: flex; align-items: center;
   gap: 8px;
@@ -77,6 +92,45 @@ body.ol2013 {
   transform-origin: right center;
 }
 
+.backstage-menu {
+  position: fixed;
+  top: 44px;
+  left: 0;
+  bottom: 22px;
+  width: 216px;
+  z-index: 18;
+  background: var(--ol-blue);
+  color: #fff;
+  padding: 10px 0;
+  transform: translateX(-100%);
+  transition: transform .16s ease-out;
+  box-shadow: 8px 0 18px rgba(0, 0, 0, .16);
+}
+.backstage-open .backstage-menu { transform: translateX(0); }
+.backstage-item {
+  display: block;
+  padding: 11px 22px;
+  color: #fff;
+  text-decoration: none;
+  border-left: 3px solid transparent;
+}
+.backstage-item:hover { background: var(--ol-blue-dark); }
+.backstage-item.active {
+  background: #fff;
+  color: var(--ol-blue);
+  border-left-color: #fff;
+}
+.backstage-shade {
+  position: fixed;
+  inset: 44px 0 22px 0;
+  z-index: 17;
+  border: 0;
+  background: transparent;
+  display: none;
+  cursor: default;
+}
+.backstage-open .backstage-shade { display: block; }
+
 /* Viewer */
 .three-pane,
 .four-pane {
