diff --git a/index.html b/index.html
index 2d5e31d..fd96eab 100644
--- a/index.html
+++ b/index.html
@@ -6,6 +6,7 @@
 <title>QuranReader — Читай Коран на арабском</title>
 <link rel="preconnect" href="https://fonts.googleapis.com">
 <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700;800&family=Noto+Naskh+Arabic:wght@400;600;700&family=Amiri:wght@400;700&display=swap" rel="stylesheet">
+<script src="https://code.responsivevoice.org/responsivevoice.js?key=FREE"></script>
 <style>
 [data-theme="light"] {
   --ink: #0F1218; --bg: #FFFFFF; --bg-card: #F2F4F7; --bg-card-hover: #E8FCFF;
@@ -1262,31 +1263,83 @@ function renderAlphabet() {
   `).join('');
 }
 
-// Audio System - Multiple fallbacks
-let voicesLoaded = false;
-let arabicVoice = null;
+// Audio System using ResponsiveVoice
+function speakLetter(idx) {
+  const letter = alphabetData[idx].letter;
+  const name = alphabetData[idx].name;
+  playArabicAudio(letter, name);
+}
 
-// Load voices
-function loadVoices() {
-  return new Promise((resolve) => {
-    const voices = speechSynthesis.getVoices();
-    if (voices.length > 0) {
-      arabicVoice = voices.find(v => v.lang.startsWith('ar')) || voices.find(v => v.lang.includes('ar')) || null;
-      voicesLoaded = true;
-      resolve();
+function playArabicAudio(text, label) {
+  showToast('🔊 ' + (label || text), 'info');
+  
+  if (typeof responsiveVoice !== 'undefined' && responsiveVoice.voiceSupport()) {
+    responsiveVoice.speak(text, "Arabic Male", {
+      rate: 0.8,
+      pitch: 1,
+      volume: 1
+    });
+  } else {
+    showToast('Аудио не поддерживается. Обновите страницу.', 'error');
+  }
+}
+
+function testAudio() {
+  const statusEl = document.getElementById('audioStatus');
+  statusEl.style.display = 'block';
+  statusEl.style.background = 'var(--bg-card)';
+  statusEl.style.color = 'var(--text-secondary)';
+  statusEl.textContent = 'Проверка аудио...';
+  
+  if (typeof responsiveVoice !== 'undefined' && responsiveVoice.voiceSupport()) {
+    statusEl.style.background = 'rgba(34,197,94,0.1)';
+    statusEl.style.color = 'var(--success)';
+    statusEl.textContent = '✅ Аудио поддерживается! Воспроизвожу тест...';
+    responsiveVoice.speak("بسم الله", "Arabic Male", {rate: 0.8});
+  } else {
+    statusEl.style.background = 'rgba(239,68,68,0.1)';
+    statusEl.style.color = 'var(--error)';
+    statusEl.textContent = '❌ Аудио не загружено. Обновите страницу и попробуйте снова.';
+  }
+}
+
+function playAllLetters() {
+  let index = 0;
+  const cards = document.querySelectorAll('.letter-card');
+  
+  function playNext() {
+    if (index < alphabetData.length) {
+      const letter = alphabetData[index].letter;
+      const name = alphabetData[index].name;
+      
+      cards.forEach(c => c.style.borderColor = 'var(--border)');
+      if (cards[index]) {
+        cards[index].style.borderColor = 'var(--quran-gold)';
+        cards[index].scrollIntoView({ behavior: 'smooth', block: 'center' });
+      }
+      
+      showToast('Буква ' + name + ' (' + (index + 1) + '/28)', 'info');
+      
+      if (typeof responsiveVoice !== 'undefined' && responsiveVoice.voiceSupport()) {
+        responsiveVoice.speak(letter, "Arabic Male", {
+          rate: 0.8,
+          onend: () => {
+            index++;
+            setTimeout(playNext, 500);
+          }
+        });
+      } else {
+        index++;
+        setTimeout(playNext, 1000);
+      }
     } else {
-      speechSynthesis.onvoiceschanged = () => {
-        const voices = speechSynthesis.getVoices();
-        arabicVoice = voices.find(v => v.lang.startsWith('ar')) || voices.find(v => v.lang.includes('ar')) || null;
-        voicesLoaded = true;
-        resolve();
-      };
-      // Timeout fallback
-      setTimeout(() => {
-        voicesLoaded = true;
-        resolve();
-      }, 2000);
+      showToast('Все буквы прослушаны!', 'success');
+      cards.forEach(c => c.style.borderColor = 'var(--border)');
     }
+  }
+  
+  playNext();
+}
   });
 }
 
@@ -1699,8 +1752,8 @@ function speakFullSurah(name) {
     ikhlas: 'قُلْ هُوَ اللَّهُ أَحَدٌ. اللَّهُ الصَّمَدُ. لَمْ يَلِدْ وَلَمْ يُولَدْ. وَلَمْ يَكُن لَّهُ كُفُوًا أَحَدٌ'
   };
   
-  if (!('speechSynthesis' in window)) {
-    showToast('Ваш браузер не поддерживает аудио', 'error');
+  if (typeof responsiveVoice === 'undefined' || !responsiveVoice.voiceSupport()) {
+    showToast('Аудио не поддерживается', 'error');
     return;
   }
   
@@ -1710,29 +1763,14 @@ function speakFullSurah(name) {
   
   function speakNext() {
     if (index < parts.length) {
-      window.speechSynthesis.cancel();
-      const utterance = new SpeechSynthesisUtterance(parts[index]);
-      utterance.lang = 'ar-SA';
-      utterance.rate = 0.6;
-      utterance.pitch = 1;
-      utterance.volume = 1;
-      
-      if (arabicVoice) {
-        utterance.voice = arabicVoice;
-      }
-      
-      utterance.onend = () => {
-        index++;
-        setTimeout(speakNext, 400);
-      };
-      
-      utterance.onerror = () => {
-        index++;
-        setTimeout(speakNext, 400);
-      };
-      
-      window.speechSynthesis.speak(utterance);
       showToast('Аят ' + (index + 1) + '/' + parts.length, 'info');
+      responsiveVoice.speak(parts[index], "Arabic Male", {
+        rate: 0.8,
+        onend: () => {
+          index++;
+          setTimeout(speakNext, 400);
+        }
+      });
     } else {
       showToast('Сура прослушана!', 'success');
     }