diff --git a/src/pages/Kiosk.tsx b/src/pages/Kiosk.tsx
index 20c8f2a..7636069 100644
--- a/src/pages/Kiosk.tsx
+++ b/src/pages/Kiosk.tsx
@@ -1,5 +1,5 @@
 import { useCallback, useEffect, useState } from 'react'
-import { Hotel, Home, LayoutGrid } from 'lucide-react'
+import { Hotel, LayoutGrid } from 'lucide-react'
 import { AppIcon } from '../components/AppIcon'
 
 interface KioskApp {
@@ -44,6 +44,18 @@ export function Kiosk() {
     return () => window.clearInterval(t)
   }, [refresh])
 
+  // Kiosk screens ask to go home with a same-origin postMessage from their own
+  // header's Home button — the shell has no bar of its own.
+  useEffect(() => {
+    function onMessage(e: MessageEvent) {
+      if (e.origin !== window.location.origin || e.data?.type !== 'hnf:kiosk-home') return
+      setOpen(null)
+      refresh()
+    }
+    window.addEventListener('message', onMessage)
+    return () => window.removeEventListener('message', onMessage)
+  }, [refresh])
+
   async function login(e: React.FormEvent) {
     e.preventDefault()
     setBusy(true); setError('')
@@ -98,20 +110,9 @@ export function Kiosk() {
   }
 
   if (open) {
-    return (
-      <div style={shell}>
-        <div style={{ display: 'flex', alignItems: 'center', gap: '0.75rem', padding: '0.35rem 0.75rem', background: 'var(--navy)', flexShrink: 0 }}>
-          <button onClick={() => { setOpen(null); refresh() }} aria-label="Back to home" style={{
-            display: 'flex', alignItems: 'center', gap: 6, background: 'var(--surface-2)', border: 'none',
-            color: 'var(--text)', borderRadius: 8, padding: '0.4rem 0.8rem', fontSize: '0.85rem', fontWeight: 600, cursor: 'pointer',
-          }}>
-            <Home size={15} strokeWidth={1.75} /> Home
-          </button>
-          <span style={{ fontSize: '0.85rem', color: 'var(--text-muted)' }}>{open.name}</span>
-        </div>
-        <iframe title={open.name} src={open.kiosk_path} style={{ flex: 1, border: 'none', width: '100%', background: 'var(--body-bg)' }} />
-      </div>
-    )
+    // The app's own kiosk header carries the Home button (it posts hnf:kiosk-home
+    // — see the listener above), so the shell adds no chrome of its own.
+    return <iframe title={open.name} src={open.kiosk_path} style={{ height: '100dvh', width: '100%', border: 'none', background: 'var(--body-bg)' }} />
   }
 
   return (