diff --git a/src/scripts/main.js b/src/scripts/main.js
index d62aa00..1ed09df 100644
--- a/src/scripts/main.js
+++ b/src/scripts/main.js
@@ -605,7 +605,7 @@ document.addEventListener('DOMContentLoaded', () => {
     //  6. AMBIENT WORKSHOP SOUND (MP3)
     // ==========================================================
 
-    let soundOn = false;
+    let soundOn = true;
 
     // Create audio element (preloaded, looped, low volume)
     const ambientAudio = new Audio('/assets/atelier-ambiance.mp3');
@@ -616,8 +616,8 @@ document.addEventListener('DOMContentLoaded', () => {
     const headerNav = document.querySelector('.header-nav');
     if (headerNav) {
         const soundBtn = document.createElement('button');
-        soundBtn.className = 'sound-toggle';
-        soundBtn.setAttribute('aria-label', 'Activer le son ambiant');
+        soundBtn.className = 'sound-toggle sound-active';
+        soundBtn.setAttribute('aria-label', 'Couper le son ambiant');
         soundBtn.innerHTML =
             '<span class="sound-bars">' +
                 '<span class="sound-bar"></span>' +
@@ -630,6 +630,20 @@ document.addEventListener('DOMContentLoaded', () => {
         attachCursorHover([soundBtn]);
     }
 
+    // Autoplay on first user interaction (browsers require it)
+    let autoStarted = false;
+    function autoStartSound() {
+        if (autoStarted || !soundOn) return;
+        autoStarted = true;
+        startAmbientSound();
+        window.removeEventListener('click', autoStartSound);
+        window.removeEventListener('scroll', autoStartSound);
+        window.removeEventListener('mousemove', autoStartSound);
+    }
+    window.addEventListener('click', autoStartSound, { once: false });
+    window.addEventListener('scroll', autoStartSound, { once: false });
+    window.addEventListener('mousemove', autoStartSound, { once: false });
+
     // Smooth volume fade using GSAP
     function startAmbientSound() {
         ambientAudio.play().then(() => {