diff --git a/locenice/app.html b/locenice/app.html
index f4a8eb7..391822a 100644
--- a/locenice/app.html
+++ b/locenice/app.html
@@ -324,7 +324,6 @@
 
 
 
-    <script type="module" src="./js/bootstrap.js?v=20261022b"></script>
 <div id="webStatus" role="status">Načítání modelu…</div>
 <button id="projectToggle" class="btn" type="button">Projekt a podklady</button>
 <dialog id="projectDialog" aria-labelledby="projectTitle">
@@ -343,6 +342,11 @@
 </dialog>
 <svg id="surveyOverlay" aria-label="Body výškopisu" style="display:none"></svg>
 <noscript><div class="web-fatal">Pro 3D model povolte JavaScript. <a href="./models/dum.glb">Stáhnout GLB</a></div></noscript>
+<script>
+// Firefox and Safari accept an import map only before the first module starts loading, so the map
+// for Three.js is added here and bootstrap.js is requested only afterwards.
+fetch('./data/app-config.json',{cache:'no-cache'}).then(r=>r.json()).then(c=>{const m=document.createElement('script');m.type='importmap';m.textContent=JSON.stringify({imports:{three:new URL(c.threeModule,location.href).href}});document.head.appendChild(m);}).catch(()=>{}).finally(()=>{const s=document.createElement('script');s.type='module';s.src='./js/bootstrap.js?v=20261022c';document.body.appendChild(s);});
+</script>
 </body>
 
 </html>
\ No newline at end of file
diff --git a/locenice/data/app-config.json b/locenice/data/app-config.json
index 9fe9532..be300e4 100644
--- a/locenice/data/app-config.json
+++ b/locenice/data/app-config.json
@@ -1,6 +1,6 @@
 {
   "version": "locenice-web-01",
-  "model": "./models/dum.glb?v=20261022b",
+  "model": "./models/dum.glb?v=20261022c",
   "renderer": "auto",
   "threeModule": "https://cdn.jsdelivr.net/npm/three@0.180.0/build/three.module.js",
   "threeLoader": "https://cdn.jsdelivr.net/npm/three@0.180.0/examples/jsm/loaders/GLTFLoader.js",
diff --git a/locenice/data/catalog.json b/locenice/data/catalog.json
index afa6685..4c0a69d 100644
--- a/locenice/data/catalog.json
+++ b/locenice/data/catalog.json
@@ -319,9 +319,9 @@
     ],
     "kitchenColor": [
       [
-        "#4e5952",
+        "#4b5449",
         "Zelená",
-        "#4e5952"
+        "#4b5449"
       ],
       [
         "#eeeae1",
@@ -353,7 +353,7 @@
       [
         "oak",
         "Dřevo",
-        "#b59369"
+        "#a97a50"
       ],
       [
         "white",
@@ -372,6 +372,11 @@
       ]
     ],
     "backsplash": [
+      [
+        "none",
+        "Bez obkladu",
+        "#efede8"
+      ],
       [
         "stone",
         "Světlý kámen",
@@ -385,7 +390,7 @@
       [
         "worktop",
         "Jako deska",
-        "#b59369"
+        "#a97a50"
       ]
     ],
     "faucet": [
@@ -424,9 +429,9 @@
     ],
     "kitchenBodyColor": [
       [
-        "#4e5952",
+        "#4b5449",
         "Zelená",
-        "#4e5952"
+        "#4b5449"
       ],
       [
         "#eeeae1",
@@ -512,10 +517,10 @@
     "intDoorCode": "",
     "intDoorType": "hinged",
     "intHandle": "square",
-    "kitchenColor": "#4e5952",
-    "kitchenBodyColor": "#4e5952",
+    "kitchenColor": "#4b5449",
+    "kitchenBodyColor": "#4b5449",
     "worktop": "oak",
-    "backsplash": "stone",
+    "backsplash": "none",
     "shower": "tray",
     "faucet": "chrome",
     "hood": "facade",
diff --git a/locenice/js/app.js b/locenice/js/app.js
index c60cf29..7f65d75 100644
--- a/locenice/js/app.js
+++ b/locenice/js/app.js
@@ -752,6 +752,7 @@ let backend=null,projectPanel=null;
             if(e.stdFullOnly && interior.enabled && interior.mode!=='walk')return false;
             if(e.stdBlind && (!stdState.blinds || (e.stdBlindFraction!==undefined && e.stdBlindFraction>stdState.blindDrop/100)))return false;
             if(e.stdWhen && Object.entries(e.stdWhen).some(([k,v])=>stdState[k]!==v))return false;
+            if(e.stdUnless && Object.entries(e.stdUnless).some(([k,v])=>stdState[k]===v))return false;
             return true;
         }
         function stdSetMaterial(role,color,texture){
@@ -797,8 +798,8 @@ let backend=null,projectPanel=null;
                     for(const r of STD_ROOMS){if(v[r[0]]===undefined)continue;const f=v[r[0]];if(!f||!['lam','tile'].includes(f.type)||!Number.isInteger(f.sample)||f.sample<1||f.sample>9)throw Error('Neplatn\u00e1 podlaha m\u00edstnosti '+r[0]);d.floors[r[0]]={type:f.type,sample:f.sample};}
                 } else if(['wallPaint','kitchenColor','kitchenBodyColor','intDoorColor'].includes(k)){
                     if(typeof v!=='string'||!/^#[0-9a-f]{6}$/i.test(v))throw Error('Neplatn\u00e1 barva: '+k);d[k]=v.toLowerCase();
-                    // The kitchen green was re-tinted; selections saved with the previous shade follow it.
-                    if(k.startsWith('kitchen')&&d[k]==='#35463e')d[k]='#4e5952';
+                    // The kitchen green was re-tinted; selections saved with an earlier shade follow it.
+                    if(k.startsWith('kitchen')&&['#35463e','#4e5952'].includes(d[k]))d[k]='#4b5449';
                 } else if(STD_OPTIONS[k]){if(!STD_OPTIONS[k].some(o=>o[0]===v))throw Error('Nezn\u00e1m\u00e1 varianta: '+k);d[k]=v;
                 } else if(enums[k]){if(!enums[k].includes(v))throw Error('Nezn\u00e1m\u00e1 varianta: '+k);d[k]=v;
                 } else if(typeof d[k]==='boolean'){if(typeof v!=='boolean')throw Error('Neplatn\u00fd p\u0159ep\u00edna\u010d: '+k);d[k]=v;
diff --git a/locenice/js/bootstrap.js b/locenice/js/bootstrap.js
index e2cdc7e..1442a51 100644
--- a/locenice/js/bootstrap.js
+++ b/locenice/js/bootstrap.js
@@ -6,8 +6,9 @@ try{
  const response=await fetch(config.model);if(!response.ok)throw Error('Model / HTTP '+response.status);
  const modelBytes=new Uint8Array(await response.arrayBuffer());
  config.threeModule=new URL(config.threeModule,location.href).href;config.threeLoader=new URL(config.threeLoader,location.href).href;
- // The standard GLTFLoader imports the same pinned Three.js copy.
- const map=document.createElement('script');map.type='importmap';map.textContent=JSON.stringify({imports:{three:config.threeModule}});document.head.appendChild(map);
+ // The standard GLTFLoader imports the same pinned Three.js copy. app.html normally adds this map
+ // before any module loads (Firefox ignores a later one); this is only the fallback.
+ if(!document.querySelector('script[type=importmap]')){const map=document.createElement('script');map.type='importmap';map.textContent=JSON.stringify({imports:{three:config.threeModule}});document.head.appendChild(map);}
  const hash=location.hash;
  if(hash.startsWith('#vyber='))try{
    let text=hash.slice(7).replace(/-/g,'+').replace(/_/g,'/');text+='='.repeat((4-text.length%4)%4);
@@ -16,7 +17,7 @@ try{
    document.getElementById('stdSavedState').textContent=JSON.stringify({selection:payload.selection});
  }catch(error){console.warn('Invalid shared selection:',error);}
  window.LOCENICE_RESOURCES={config,catalog,assets,references,scene,site,modelBytes};
- await import('./app.js?v=20261022b');
+ await import('./app.js?v=20261022c');
 }catch(error){
  console.error(error);const box=document.getElementById('loading');box.className='error';box.innerHTML='<div class="errorDetail"></div><p>Nahrajte celou slozku vcetne js, css, data, models a assets. Otevrete ji pres HTTP(S), nikoli dvojklikem na HTML.</p><a href="./models/dum.glb" download>Stahnout model GLB</a>';
  box.querySelector('.errorDetail').textContent=error.message;document.getElementById('webStatus').textContent='Chyba nacitani';
diff --git a/locenice/models/dum.glb b/locenice/models/dum.glb
index f10a1bc..0994c3e 100644
Binary files a/locenice/models/dum.glb and b/locenice/models/dum.glb differ