diff --git a/src/static/dashboard.html b/src/static/dashboard.html
index 30cb7bb..e5995ce 100644
--- a/src/static/dashboard.html
+++ b/src/static/dashboard.html
@@ -764,7 +764,7 @@
     <script src="/static/js/api_network.js?v=20260316a"></script>
     <script src="/static/js/network-graph.js?v=20260316a"></script>
     <script src="/static/js/app_network.js?v=20260316a"></script>
-    <script src="/static/js/tutorial.js?v=20260316q"></script>
+    <script src="/static/js/tutorial.js?v=20260316r"></script>
     <script src="/static/js/chat.js?v=20260316f"></script>
     <script>document.addEventListener("DOMContentLoaded",function(){Chat.init();Tutorial.init()});</script>
 
diff --git a/src/static/js/tutorial.js b/src/static/js/tutorial.js
index 76229b8..1dc5e38 100644
--- a/src/static/js/tutorial.js
+++ b/src/static/js/tutorial.js
@@ -374,14 +374,14 @@ const Tutorial = {
         }).setView([53.545, 9.98], 13);
 
         // Tile-Layer (Theme-abhängig)
-        var isDark = !document.documentElement.getAttribute('data-theme') || document.documentElement.getAttribute('data-theme') !== 'light';
+        var isDark = document.documentElement.getAttribute('data-theme') !== 'light';
         if (isDark) {
-            L.tileLayer('https://{s}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}{r}.png', {
+            L.tileLayer('https://{s}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}.png', {
                 attribution: '\u00a9 OpenStreetMap, \u00a9 CARTO',
                 maxZoom: 19,
             }).addTo(this._demoMap);
         } else {
-            L.tileLayer('https://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}{r}.png', {
+            L.tileLayer('https://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png', {
                 attribution: '\u00a9 OpenStreetMap, \u00a9 CARTO',
                 maxZoom: 19,
             }).addTo(this._demoMap);
@@ -1519,19 +1519,17 @@ const Tutorial = {
         mapDiv.style.cssText = 'width:100%;height:100%;min-height:400px;';
         fsContainer.appendChild(mapDiv);
 
-        var isDark = !document.documentElement.getAttribute('data-theme') || document.documentElement.getAttribute('data-theme') !== 'light';
         // Start weit herausgezoomt (Europa)
         this._demoMap = L.map(mapDiv, {
             zoomControl: true,
             attributionControl: true,
         }).setView([51.0, 10.0], 5);
 
-        var tileUrl = isDark
-            ? 'https://{s}.basemaps.cartocdn.com/dark_all/{z}/{x}/{y}{r}.png'
-            : 'https://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}{r}.png';
-        L.tileLayer(tileUrl, {
-            attribution: '\u00a9 OpenStreetMap, \u00a9 CARTO',
-            maxZoom: 19,
+        // Gleiche Tile-Quelle wie die echte App (deutsche OSM-Kacheln)
+        L.tileLayer('https://tile.openstreetmap.de/{z}/{x}/{y}.png', {
+            attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a>',
+            maxZoom: 18,
+            noWrap: true,
         }).addTo(this._demoMap);
 
         // Marker (aber noch nicht sichtbar bei Zoom 5)
@@ -2013,12 +2011,14 @@ const Tutorial = {
         this._els.cursor.classList.add('tutorial-cursor-resize');
         await this._wait(200);
 
-        // Kachel vergrößern (visuell)
+        // Rein visuelle Vergrößerung per CSS transform (kein width/height!)
+        // So bleibt GridStack komplett unberührt
         tile.style.transition = 'none';
         tile.style.zIndex = '9002';
-        var origW = tile.offsetWidth;
-        var origH = tile.offsetHeight;
+        tile.style.transformOrigin = 'top left';
         var self = this;
+        var origW = rect.width;
+        var origH = rect.height;
         var start = null;
 
         await new Promise(function(resolve) {
@@ -2027,12 +2027,11 @@ const Tutorial = {
                 if (!start) start = ts;
                 var progress = Math.min((ts - start) / 1000, 1);
                 var eased = progress < 0.5 ? 4*progress*progress*progress : 1 - Math.pow(-2*progress+2,3)/2;
-                var dx = expandX * eased;
-                var dy = expandY * eased;
-                tile.style.width = (origW + dx) + 'px';
-                tile.style.height = (origH + dy) + 'px';
-                self._els.cursor.style.left = (startX + dx) + 'px';
-                self._els.cursor.style.top = (startY + dy) + 'px';
+                var scaleX = 1 + (expandX / origW) * eased;
+                var scaleY = 1 + (expandY / origH) * eased;
+                tile.style.transform = 'scale(' + scaleX + ', ' + scaleY + ')';
+                self._els.cursor.style.left = (startX + expandX * eased) + 'px';
+                self._els.cursor.style.top = (startY + expandY * eased) + 'px';
                 if (progress < 1) requestAnimationFrame(frame); else resolve();
             }
             requestAnimationFrame(frame);
@@ -2047,27 +2046,21 @@ const Tutorial = {
                 if (!start) start = ts;
                 var progress = Math.min((ts - start) / 700, 1);
                 var eased = progress < 0.5 ? 4*progress*progress*progress : 1 - Math.pow(-2*progress+2,3)/2;
-                var dx = expandX * (1 - eased);
-                var dy = expandY * (1 - eased);
-                tile.style.width = (origW + dx) + 'px';
-                tile.style.height = (origH + dy) + 'px';
-                self._els.cursor.style.left = (startX + dx) + 'px';
-                self._els.cursor.style.top = (startY + dy) + 'px';
+                var scaleX = 1 + (expandX / origW) * (1 - eased);
+                var scaleY = 1 + (expandY / origH) * (1 - eased);
+                tile.style.transform = 'scale(' + scaleX + ', ' + scaleY + ')';
+                self._els.cursor.style.left = (startX + expandX * (1 - eased)) + 'px';
+                self._els.cursor.style.top = (startY + expandY * (1 - eased)) + 'px';
                 if (progress < 1) requestAnimationFrame(frame); else resolve();
             }
             requestAnimationFrame(frame);
         });
 
-        // Aufräumen - exakte Originalgröße wiederherstellen
-        tile.style.width = origW + 'px';
-        tile.style.height = origH + 'px';
+        // Aufräumen
+        tile.style.transform = '';
+        tile.style.transformOrigin = '';
         tile.style.transition = '';
         tile.style.zIndex = '';
-        // Nach kurzer Verzögerung CSS-Werte entfernen damit GridStack wieder übernimmt
-        setTimeout(function() {
-            tile.style.width = '';
-            tile.style.height = '';
-        }, 100);
         this._hideCursor();
         await this._wait(200);