diff --git a/App/assets/css/ggs-header.css b/App/assets/css/ggs-header.css
index 2e3b0cd..4a74634 100644
--- a/App/assets/css/ggs-header.css
+++ b/App/assets/css/ggs-header.css
@@ -49,6 +49,8 @@
 .ggs-header--float .ggs-header-logo {
   width: 30px;
   height: 30px;
+  min-width: 30px;
+  min-height: 0;
   border-radius: 50%;
   background: #1f4e5a;
   flex: none;
@@ -57,6 +59,9 @@
   align-items: center;
   justify-content: center;
   gap: 0;
+  padding: 0;
+  border: none;
+  box-sizing: border-box;
 }
 .ggs-header--float .ggs-header-logo-icon {
   width: 100% !important;
@@ -155,6 +160,11 @@
   background: #fff;
   transform: translateY(-1px);
 }
+.ggs-header--float .ggs-header-actions > button .ic,
+.ggs-header--float .ggs-header-actions > a .ic {
+  width: 20px;
+  height: 20px;
+}
 
 /* --- Tempo-Zustandsbutton (zeigt IMMER den aktuellen Speed) --- */
 .ggs-header--float .ggs-tempo { position: relative; display: inline-flex; }
diff --git a/App/assets/js/ggs-header.js b/App/assets/js/ggs-header.js
index b181fb8..ab5277a 100644
--- a/App/assets/js/ggs-header.js
+++ b/App/assets/js/ggs-header.js
@@ -73,6 +73,7 @@
   var SOUND_IDS = ['btn-sound', 'btn-mute', 'btnVoiceToggle', 'btnAudioToggle', 'btnAudio', 'audio-toggle', 'btnSound', 'btn-ton', 'btn-audio'];
   var RESET_IDS = ['btn-reset', 'btnReset', 'btn-restart', 'btn-neustart'];
   var HELP_IDS  = ['btn-info', 'btnHelp', 'btn-help', 'btn-anleitung', 'btn-hilfe'];
+  var GLOSSAR_IDS = ['glossar-btn', 'btn-glossar', 'btnGlossar', 'btnGlossary'];
 
   /* Glyph-Buttons (Ton), die die Sim per textContent umschaltet:
      Icon nach jeder Änderung nachziehen, Mute-Zustand als Icon spiegeln. */
@@ -197,6 +198,7 @@
     setIcon(helpBtn, 'help', 'Hilfe / Anleitung');
     watchGlyphBtn(soundBtn, function (t) { return /🔇|🔈|🔕|off|aus|mute|stumm/i.test(t) ? 'sound-off' : 'sound'; }, 'Ton an/aus');
     setIcon(resetBtn, 'restart', 'Neu starten');
+    setIcon(byIds(header, GLOSSAR_IDS), 'glossar');   // sim-interner Glossar/Fachinfo-Button
     var lehrplan = q('#ggs-lehrplan-link'); if (lehrplan) lehrplan.style.display = 'none';
 
     /* --- 4) Tempo-Panel (nur wenn .ggs-speed vorhanden) ------- */