diff --git a/web/themes/default/app.js b/web/themes/default/app.js
index 5e5c786..04e5bc2 100644
--- a/web/themes/default/app.js
+++ b/web/themes/default/app.js
@@ -912,6 +912,7 @@ function closeSettings(){
 var _slotEditIndex=-1;
 var _slotEditLoaded=false;
 var _MAT_PRESETS=['PLA','PETG','ABS','ASA','TPU','PA','PC','HIPS'];
+var _BASE_MATERIAL_TYPES=['PLA','PETG','ABS','ASA','TPU','TPE','PA','PC','HIPS','PEI','PEEK'];
 function updateSlotEditFeedButton(){
   var btn=document.getElementById('btn-slot-edit-feed');
   if(!btn)return;
@@ -1984,6 +1985,20 @@ function _normalizeMaterialKey(material){
   var key=(material||'').toUpperCase().replace(/[^A-Z0-9+]/g,'');
   // Orca often uses PLA for PLA+, while AMS may report PLA+.
   if(key==='PLA+'||key==='PLAPLUS') return 'PLA';
+  // Handle modifier+base patterns in either order: "Matte PLA", "Silk PETG",
+  // "PLA Silk", "PLA Matte". OrcaSlicer always writes the base type in GCode
+  // (filament_type = PLA), but users label slots with the full product-style name.
+  // Scan each space-separated word; return the first one that is a known base material.
+  // Dash-suffix variants ("PLA-CF", "PETG-CF") contain no space and fall through
+  // unchanged, preserving correct incompatibility with their base types.
+  var trimmed=(material||'').trim();
+  if(trimmed.indexOf(' ')>=0){
+    var words=trimmed.toUpperCase().split(/\s+/);
+    for(var i=0;i<words.length;i++){
+      var w=words[i].replace(/[^A-Z0-9+]/g,'');
+      if(_BASE_MATERIAL_TYPES.indexOf(w)>=0) return w;
+    }
+  }
   return key;
 }
 function _materialsCompatible(a,b){