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diff --git a/App/sims/tourismustal/assets/audio-info/m-staff.mp3 b/App/sims/tourismustal/assets/audio-info/m-staff.mp3
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diff --git a/App/sims/tourismustal/assets/audio-info/m-summer.mp3 b/App/sims/tourismustal/assets/audio-info/m-summer.mp3
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diff --git a/App/sims/tourismustal/assets/audio-info/m-summer2.mp3 b/App/sims/tourismustal/assets/audio-info/m-summer2.mp3
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diff --git a/App/sims/tourismustal/assets/audio-info/mega.mp3 b/App/sims/tourismustal/assets/audio-info/mega.mp3
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diff --git a/App/sims/tourismustal/assets/audio-info/nature-low.mp3 b/App/sims/tourismustal/assets/audio-info/nature-low.mp3
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diff --git a/App/sims/tourismustal/assets/audio-info/no-snow-winter.mp3 b/App/sims/tourismustal/assets/audio-info/no-snow-winter.mp3
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diff --git a/App/sims/tourismustal/assets/audio-info/overtourism.mp3 b/App/sims/tourismustal/assets/audio-info/overtourism.mp3
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diff --git a/App/sims/tourismustal/assets/audio-info/q1.mp3 b/App/sims/tourismustal/assets/audio-info/q1.mp3
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diff --git a/App/sims/tourismustal/assets/audio-info/q2.mp3 b/App/sims/tourismustal/assets/audio-info/q2.mp3
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diff --git a/App/sims/tourismustal/assets/audio-info/q3.mp3 b/App/sims/tourismustal/assets/audio-info/q3.mp3
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diff --git a/App/sims/tourismustal/assets/audio-info/q4.mp3 b/App/sims/tourismustal/assets/audio-info/q4.mp3
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diff --git a/App/sims/tourismustal/assets/audio-info/q5.mp3 b/App/sims/tourismustal/assets/audio-info/q5.mp3
new file mode 100644
index 0000000..5b27693
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diff --git a/App/sims/tourismustal/assets/audio-info/q6.mp3 b/App/sims/tourismustal/assets/audio-info/q6.mp3
new file mode 100644
index 0000000..6012b23
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diff --git a/App/sims/tourismustal/assets/audio-info/sommerloch.mp3 b/App/sims/tourismustal/assets/audio-info/sommerloch.mp3
new file mode 100644
index 0000000..2467eb6
Binary files /dev/null and b/App/sims/tourismustal/assets/audio-info/sommerloch.mp3 differ
diff --git a/App/sims/tourismustal/assets/audio-info/too-expensive.mp3 b/App/sims/tourismustal/assets/audio-info/too-expensive.mp3
new file mode 100644
index 0000000..2edc00e
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diff --git a/App/sims/tourismustal/js/data.js b/App/sims/tourismustal/js/data.js
index c4ad69b..6dfe0ec 100644
--- a/App/sims/tourismustal/js/data.js
+++ b/App/sims/tourismustal/js/data.js
@@ -143,7 +143,7 @@ export const SCENARIOS = {
       { id: 'nature', label: 'Naturwert mind. 55 %', check: s => s.nature >= 55 },
     ],
     intro: {
-      id: 'intro', icon: '👋', title: 'Willkommen im Tal!',
+      id: 'intro-pionierzeit', icon: '👋', title: 'Willkommen im Tal!',
       text: 'Sommer 1975. Du übernimmst die Entwicklung eines kleinen, stillen '
         + 'Alpentals.\n\nFang klein an: Baue zuerst ein Gasthaus im Tal, in der '
         + 'Nähe des Dorfes. Dann kommen die ersten Wanderer – und alles Weitere '
@@ -179,7 +179,7 @@ export const SCENARIOS = {
       { id: 'nature', label: 'Naturwert mind. 60 %', check: s => s.nature >= 60 },
     ],
     intro: {
-      id: 'intro', icon: '📈', title: 'Der Boom ist da!',
+      id: 'intro-boom', icon: '📈', title: 'Der Boom ist da!',
       text: 'Sommer 2000. Das Tal ist längst kein Geheimtipp mehr – die Gäste '
         + 'strömen, und alle wollen ausbauen.\n\nAber die Natur trägt schon '
         + 'Spuren, und die Einheimischen murren. Schaffst du Wachstum, OHNE '
@@ -218,7 +218,7 @@ export const SCENARIOS = {
       { id: 'nature', label: 'Naturwert mind. 65 %', check: s => s.nature >= 65 },
     ],
     intro: {
-      id: 'intro', icon: '🌡️', title: 'Die Schneegrenze steigt',
+      id: 'intro-klimawandel', icon: '🌡️', title: 'Die Schneegrenze steigt',
       text: 'Sommer 2035. Die Winter werden wärmer, Schnee ist keine '
         + 'Selbstverständlichkeit mehr. Messdaten zeigen: In den Alpen '
         + 'schmilzt der Schnee 5–9 Tage pro Jahrzehnt früher – seit 1970 ist '
diff --git a/App/sims/tourismustal/js/main.js b/App/sims/tourismustal/js/main.js
index 455e93e..8384d7e 100644
--- a/App/sims/tourismustal/js/main.js
+++ b/App/sims/tourismustal/js/main.js
@@ -141,7 +141,7 @@ function onTileTap(c, r) {
     const first = !state.firedEvents.has('mega-info');
     state.firedEvents.add('mega-info');
     ui.showCard({
-      id: `mega-${res.merged.c}-${res.merged.r}`, icon: '🏛️', sound: 'milestone',
+      id: `mega-${res.merged.c}-${res.merged.r}`, audio: 'mega', icon: '🏛️', sound: 'milestone',
       title: `Megabauwerk: ${res.merged.name}!`,
       text: `Vier gleiche Gebäude im Quadrat sind zu EINEM großen ${res.merged.name} verschmolzen.`
         + '\n\nDas ist ein Skaleneffekt: Das Megabauwerk leistet so viel wie '
diff --git a/App/sims/tourismustal/js/ui.js b/App/sims/tourismustal/js/ui.js
index e1d7503..92c0c5e 100644
--- a/App/sims/tourismustal/js/ui.js
+++ b/App/sims/tourismustal/js/ui.js
@@ -146,7 +146,7 @@ export class UI {
       this.infoMode = this.infoMode === 'audio' ? 'read' : 'audio';
       localStorage.setItem('tt_infomode', this.infoMode);
       this._syncInfoModeBtn(e.currentTarget);
-      this._speak(null);
+      this._stopVoice();
       this.toast(this.infoMode === 'audio'
         ? '🔊 Audio-Modus: Meldungen werden vorgelesen, das Spiel läuft weiter. Entscheidungen pausieren weiterhin.'
         : '📖 Lese-Modus: Meldungen öffnen sich als Karte, das Spiel pausiert.', 5000);
@@ -486,12 +486,31 @@ export class UI {
     el.classList.remove('hidden');
     el.onclick = () => {
       el.classList.add('hidden');
-      this._speak(null);                       // Vorlesen stoppen
+      this._stopVoice();
       this.showCard({ ...card, transient: true, forceModal: true });
     };
     clearTimeout(this._bannerTimer);
     this._bannerTimer = setTimeout(() => el.classList.add('hidden'), 9000);
-    this._speak(`${card.title}. ${card.text}`);
+    this._speakCard(card);
+  }
+
+  // Vorproduzierte Sprach-Audios (assets/audio-info/<id>.mp3, OpenAI-TTS).
+  // Browser-TTS nur als Not-Fallback, falls eine Datei fehlt.
+  _stopVoice() {
+    if (this._voice) { this._voice.pause(); this._voice = null; }
+    if ('speechSynthesis' in window) speechSynthesis.cancel();
+  }
+
+  _speakCard(card) {
+    this._stopVoice();
+    const id = card.audio || card.id;
+    if (!id) { this._speak(`${card.title}. ${card.text}`); return; }
+    const a = new Audio(`assets/audio-info/${id}.mp3`);
+    a.volume = 0.95;
+    this._voice = a;
+    const fallback = () => { if (this._voice === a) this._speak(`${card.title}. ${card.text}`); };
+    a.onerror = fallback;
+    a.play().catch(fallback);
   }
 
   // Sprachausgabe (Browser-TTS, deutsche Stimme). null = stoppen.
@@ -686,7 +705,7 @@ export class UI {
   // ---------- Onboarding ----------
   showOnboarding() {
     this.showCard({
-      icon: '🏔️', transient: true,
+      icon: '🏔️', transient: true, forceModal: true,
       title: 'Willkommen! (1/3) – So spielst du',
       text: 'Rechts ein Gebäude wählen, dann auf die Karte tippen – fertig. '
         + 'Nach dem Bau legst du das Werkzeug automatisch ab.\n\n'
@@ -696,7 +715,7 @@ export class UI {
         + 'Schritt für Schritt frei.',
     });
     this.showCard({
-      icon: '🚶', transient: true,
+      icon: '🚶', transient: true, forceModal: true,
       title: 'Die Gäste (2/3) – dein Kreislauf',
       text: 'Jede Figur steht für etwa 10 Gäste. Sie kommen mit dem Bus, '
         + 'wandern, kehren ein und reisen wieder ab.\n\n'
@@ -707,7 +726,7 @@ export class UI {
         + 'Wer konsumiert, bringt Geld – wer nicht kommen kann, keins.',
     });
     this.showCard({
-      icon: '🔍', transient: true,
+      icon: '🔍', transient: true, forceModal: true,
       title: 'Durchblick (3/3) – warum läuft es (nicht)?',
       text: 'Links stehen deine Kennzahlen. Kommen weniger Gäste als möglich, '
         + 'erscheint dort der GRUND (z.B. „Engpass: Anreise").\n\n'