diff --git a/backend/static/js/app.js b/backend/static/js/app.js
index 702f5ac..28f466a 100644
--- a/backend/static/js/app.js
+++ b/backend/static/js/app.js
@@ -3,7 +3,7 @@
    Router, State-Management, Navigation, Initialisierung.
    ============================================================ */
 
-const APP_VER = '424'; // ← bei jedem Deploy mit Frontend-Änderungen erhöhen
+const APP_VER = '425'; // ← bei jedem Deploy mit Frontend-Änderungen erhöhen
 
 const App = (() => {
 
diff --git a/backend/static/js/pages/welcome.js b/backend/static/js/pages/welcome.js
index 36d74f7..479953f 100644
--- a/backend/static/js/pages/welcome.js
+++ b/backend/static/js/pages/welcome.js
@@ -455,7 +455,7 @@ window.Page_welcome = (() => {
         width: 14px; height: 14px;
         transition: transform 0.25s ease;
       }
-      .wc-grid--collapsed { display: none; }
+      .wc-grid.wc-grid--collapsed { display: none; }
 
       /* Bottom CTA */
       .wc-bottom-cta {
@@ -587,7 +587,7 @@ window.Page_welcome = (() => {
         sub.style.opacity      = '1';
         dots.forEach((d, i) => d.classList.toggle('wc-hero-dot--active', i === idx));
       }, 400);
-    }, 4000);
+    }, 6000);
   }
 
   // ----------------------------------------------------------
diff --git a/backend/static/sw.js b/backend/static/sw.js
index cf34bc0..0de955a 100644
--- a/backend/static/sw.js
+++ b/backend/static/sw.js
@@ -3,7 +3,7 @@
    Offline-Cache + Push Notifications + Tile-Cache
    ============================================================ */
 
-const CACHE_VERSION = 'by-v445';
+const CACHE_VERSION = 'by-v446';
 const CACHE_STATIC  = `${CACHE_VERSION}-static`;
 const CACHE_TILES   = 'ban-yaro-tiles-v1';  // bleibt über SW-Updates erhalten