diff --git a/prototyp-app.html b/prototyp-app.html
index a0228b1..18a6e55 100644
--- a/prototyp-app.html
+++ b/prototyp-app.html
@@ -23,6 +23,10 @@
   }
   *{box-sizing:border-box; margin:0; padding:0;}
   html{-webkit-text-size-adjust:100%;}
+  html, body{overscroll-behavior-y:none;}
+  /* Explore ist ein fixer Vollbild-Screen: Seite darf nicht scrollen/wippen */
+  body.noscroll{overflow:hidden; height:100dvh;}
+  body.noscroll .app{padding-bottom:0;}
   body{
     background:var(--bg); color:var(--txt);
     font-family:-apple-system,BlinkMacSystemFont,"Helvetica Neue","Inter",Roboto,system-ui,sans-serif;
@@ -293,7 +297,7 @@
   .sheet li::before{content:"·"; position:absolute; left:2px; color:var(--accent); font-weight:700;}
 </style>
 </head>
-<body>
+<body class="noscroll">
 
 <!-- Lucide-Icon-Sprite + Liquid-Glass-Filter -->
 <svg width="0" height="0" style="position:absolute" aria-hidden="true">
@@ -876,6 +880,7 @@ function go(id){
   };
   document.querySelectorAll('.nav button').forEach(b=>b.classList.remove('on'));
   if(navMap[id]) document.getElementById(navMap[id]).classList.add('on');
+  document.body.classList.toggle('noscroll', id==='explore');
   window.scrollTo(0,0);
 }
 function pick(el){
