diff --git a/public/assets/atelier-ambiance.mp3 b/public/assets/atelier-ambiance.mp3
new file mode 100644
index 0000000..be21f6a
Binary files /dev/null and b/public/assets/atelier-ambiance.mp3 differ
diff --git a/public/main.js b/public/main.js
index 5c5f9ac..f4e7f08 100644
--- a/public/main.js
+++ b/public/main.js
@@ -601,13 +601,16 @@ document.addEventListener('DOMContentLoaded', () => {
     });
 
     // ==========================================================
-    //  6. AMBIENT WORKSHOP SOUND
+    //  6. AMBIENT WORKSHOP SOUND (MP3)
     // ==========================================================
 
-    let audioCtx = null;
     let soundOn = false;
-    let soundNodes = [];
-    let clickTimer = null;
+
+    // Create audio element (preloaded, looped, low volume)
+    const ambientAudio = new Audio('/assets/atelier-ambiance.mp3');
+    ambientAudio.loop = true;
+    ambientAudio.volume = 0;
+    ambientAudio.preload = 'auto';
 
     const headerNav = document.querySelector('.header-nav');
     if (headerNav) {
@@ -626,93 +629,18 @@ document.addEventListener('DOMContentLoaded', () => {
         attachCursorHover([soundBtn]);
     }
 
-    function createAudioContext() {
-        audioCtx = new (window.AudioContext || window.webkitAudioContext)();
-    }
-
-    function generateBrownNoise(ctx, duration) {
-        const bufferSize = ctx.sampleRate * duration;
-        const buffer = ctx.createBuffer(1, bufferSize, ctx.sampleRate);
-        const data = buffer.getChannelData(0);
-        let lastOut = 0;
-        for (let i = 0; i < bufferSize; i++) {
-            const white = Math.random() * 2 - 1;
-            data[i] = (lastOut + (0.02 * white)) / 1.02;
-            lastOut = data[i];
-            data[i] *= 3.5;
-        }
-        return buffer;
-    }
-
+    // Smooth volume fade using GSAP
     function startAmbientSound() {
-        if (!audioCtx) createAudioContext();
-        if (audioCtx.state === 'suspended') audioCtx.resume();
-
-        const noiseBuffer = generateBrownNoise(audioCtx, 4);
-        const noiseSource = audioCtx.createBufferSource();
-        noiseSource.buffer = noiseBuffer;
-        noiseSource.loop = true;
-
-        const lowpass = audioCtx.createBiquadFilter();
-        lowpass.type = 'lowpass';
-        lowpass.frequency.value = 180;
-
-        const gain = audioCtx.createGain();
-        gain.gain.value = 0;
-        gain.gain.linearRampToValueAtTime(0.045, audioCtx.currentTime + 2);
-
-        noiseSource.connect(lowpass);
-        lowpass.connect(gain);
-        gain.connect(audioCtx.destination);
-        noiseSource.start();
-
-        soundNodes.push({ source: noiseSource, gain: gain });
-        scheduleMetalClick();
-    }
-
-    function playMetalClick() {
-        if (!audioCtx || audioCtx.state !== 'running') return;
-
-        const osc = audioCtx.createOscillator();
-        osc.type = 'sine';
-        osc.frequency.value = 600 + Math.random() * 2400;
-
-        const gain = audioCtx.createGain();
-        gain.gain.value = 0.006 + Math.random() * 0.014;
-        gain.gain.exponentialRampToValueAtTime(
-            0.0001,
-            audioCtx.currentTime + 0.08 + Math.random() * 0.25
-        );
-
-        const filter = audioCtx.createBiquadFilter();
-        filter.type = 'bandpass';
-        filter.frequency.value = 1000 + Math.random() * 2000;
-        filter.Q.value = 12 + Math.random() * 25;
-
-        osc.connect(filter);
-        filter.connect(gain);
-        gain.connect(audioCtx.destination);
-        osc.start();
-        osc.stop(audioCtx.currentTime + 0.5);
-    }
-
-    function scheduleMetalClick() {
-        if (!soundOn) return;
-        const delay = 2000 + Math.random() * 7000;
-        clickTimer = setTimeout(() => {
-            if (!soundOn) return;
-            playMetalClick();
-            scheduleMetalClick();
-        }, delay);
+        ambientAudio.play().then(() => {
+            gsap.to(ambientAudio, { volume: 0.04, duration: 2, ease: 'power2.out' });
+        }).catch(() => {});
     }
 
     function stopAmbientSound() {
-        if (clickTimer) { clearTimeout(clickTimer); clickTimer = null; }
-        soundNodes.forEach(({ source, gain }) => {
-            gain.gain.linearRampToValueAtTime(0, audioCtx.currentTime + 1);
-            setTimeout(() => { try { source.stop(); } catch (e) {} }, 1200);
+        gsap.to(ambientAudio, {
+            volume: 0, duration: 1.2, ease: 'power2.in',
+            onComplete: () => ambientAudio.pause(),
         });
-        soundNodes = [];
     }
 
     function toggleSound() {
diff --git a/public/style.css b/public/style.css
index 9bcbfad..b1345ef 100644
--- a/public/style.css
+++ b/public/style.css
@@ -14,7 +14,7 @@
     --pad: 2rem;
 }
 
-* { margin: 0; padding: 0; box-sizing: border-box; }
+* { margin: 0; padding: 0; box-sizing: border-box; cursor: none !important; }
 
 html { font-size: 13px; }
 
@@ -35,32 +35,33 @@ body {
     pointer-events: none;
     z-index: 999998;
     opacity: 0;
-    transition: width 0.15s, height 0.15s;
+    background: var(--clr-black);
+    transition: width 0.15s, height 0.15s, background 0.15s;
 }
 .cad-h {
-    width: 40px; height: 1px;
-    background: var(--clr-black);
-    transform: translateY(-0.5px);
+    width: 40px; height: 2px;
+    transform: translateY(-1px);
 }
-.cad-h.cad-hover { width: 56px; margin-left: -8px; }
+.cad-h.cad-hover { width: 56px; margin-left: -8px; background: var(--clr-red); }
 .cad-v {
-    width: 1px; height: 40px;
-    background: var(--clr-black);
-    transform: translateX(-0.5px);
+    width: 2px; height: 40px;
+    transform: translateX(-1px);
 }
-.cad-v.cad-hover { height: 56px; margin-top: -8px; }
+.cad-v.cad-hover { height: 56px; margin-top: -8px; background: var(--clr-red); }
 .cad-center {
     position: fixed;
-    width: 3px; height: 3px;
+    width: 6px; height: 6px;
     background: var(--clr-red);
     pointer-events: none;
     z-index: 999999;
     opacity: 0;
-    transform: translate(-1.5px, -1.5px);
+    transform: translate(-3px, -3px);
+    transition: width 0.15s, height 0.15s;
 }
 .cad-center.cad-hover {
-    width: 5px; height: 5px;
-    transform: translate(-2.5px, -2.5px);
+    width: 9px; height: 9px;
+    transform: translate(-4.5px, -4.5px);
+    background: var(--clr-black);
 }
 .cad-coords {
     position: fixed;