diff --git a/web/src/utils/sounds.ts b/web/src/utils/sounds.ts
index 6760711..841f7d9 100644
--- a/web/src/utils/sounds.ts
+++ b/web/src/utils/sounds.ts
@@ -4,17 +4,20 @@ function getAudioContext(): AudioContext {
   if (!audioCtx) {
     audioCtx = new AudioContext();
   }
+  if (audioCtx.state === 'suspended') {
+    audioCtx.resume();
+  }
   return audioCtx;
 }
 
 function playTone(
+  ctx: AudioContext,
   frequency: number,
   startTime: number,
   duration: number,
   type: OscillatorType = 'sine',
   volume = 0.3,
 ) {
-  const ctx = getAudioContext();
   const osc = ctx.createOscillator();
   const gain = ctx.createGain();
 
@@ -30,27 +33,33 @@ function playTone(
 }
 
 export function playCorrectSound() {
-  const ctx = getAudioContext();
-  const now = ctx.currentTime;
-  // Cheerful ascending two-note ding
-  playTone(523.25, now, 0.15, 'sine', 0.25); // C5
-  playTone(659.25, now + 0.12, 0.2, 'sine', 0.25); // E5
+  try {
+    const ctx = getAudioContext();
+    const now = ctx.currentTime;
+    // Cheerful ascending two-note ding
+    playTone(ctx, 523.25, now, 0.15, 'sine', 0.25); // C5
+    playTone(ctx, 659.25, now + 0.12, 0.2, 'sine', 0.25); // E5
+  } catch { /* audio unavailable */ }
 }
 
 export function playIncorrectSound() {
-  const ctx = getAudioContext();
-  const now = ctx.currentTime;
-  // Gentle descending two-note
-  playTone(330, now, 0.15, 'triangle', 0.2); // E4
-  playTone(262, now + 0.12, 0.25, 'triangle', 0.2); // C4
+  try {
+    const ctx = getAudioContext();
+    const now = ctx.currentTime;
+    // Gentle descending two-note
+    playTone(ctx, 330, now, 0.15, 'triangle', 0.2); // E4
+    playTone(ctx, 262, now + 0.12, 0.25, 'triangle', 0.2); // C4
+  } catch { /* audio unavailable */ }
 }
 
 export function playCompletionSound() {
-  const ctx = getAudioContext();
-  const now = ctx.currentTime;
-  // Ascending fanfare
-  playTone(523.25, now, 0.15, 'sine', 0.2); // C5
-  playTone(659.25, now + 0.1, 0.15, 'sine', 0.2); // E5
-  playTone(783.99, now + 0.2, 0.15, 'sine', 0.2); // G5
-  playTone(1046.5, now + 0.3, 0.35, 'sine', 0.25); // C6
+  try {
+    const ctx = getAudioContext();
+    const now = ctx.currentTime;
+    // Ascending fanfare
+    playTone(ctx, 523.25, now, 0.15, 'sine', 0.2); // C5
+    playTone(ctx, 659.25, now + 0.1, 0.15, 'sine', 0.2); // E5
+    playTone(ctx, 783.99, now + 0.2, 0.15, 'sine', 0.2); // G5
+    playTone(ctx, 1046.5, now + 0.3, 0.35, 'sine', 0.25); // C6
+  } catch { /* audio unavailable */ }
 }