diff --git a/public/style.css b/public/style.css
index fd4088b..26be1c4 100644
--- a/public/style.css
+++ b/public/style.css
@@ -256,6 +256,9 @@ hr { border: none; border-top: var(--border); margin: 0; }
 .product-card:hover .card-img-wrap {
     border-bottom-color: var(--clr-red);
 }
+.product-card::before {
+    transition: border-color 0.2s ease;
+}
 .product-card:hover .card-img-wrap {
     background: var(--clr-card-bg);
 }
@@ -357,7 +360,7 @@ hr { border: none; border-top: var(--border); margin: 0; }
     display: flex;
     flex-direction: column;
     gap: 1.4rem;
-    background: var(--clr-bg);
+    background: #dcdcdc;
 }
 
 .panel-index {
@@ -614,6 +617,33 @@ hr { border: none; border-top: var(--border); margin: 0; }
 }
 .nl-row button:hover { background: var(--clr-red); color: var(--clr-black); }
 
+/* ---- WHATSAPP BUTTON ---- */
+.whatsapp-btn {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 0.7rem;
+    width: 100%;
+    background: #25D366;
+    color: #fff;
+    border: 2px solid #111;
+    font-family: var(--font-mono);
+    font-size: 0.78rem;
+    font-weight: 700;
+    letter-spacing: 0.04em;
+    padding: 1.1rem 1.5rem;
+    text-align: center;
+    text-decoration: none;
+    cursor: none;
+    transition: background 0.2s, color 0.2s, border-color 0.2s;
+    pointer-events: auto;
+}
+.whatsapp-btn:hover {
+    background: var(--clr-black);
+    color: #25D366;
+    border-color: #25D366;
+}
+
 /* ---- FOOTER ---- */
 .footer {
     margin-top: auto;
@@ -735,14 +765,14 @@ hr { border: none; border-top: var(--border); margin: 0; }
 .tech-scanline {
     position: absolute;
     left: 0; right: 0;
-    height: 2px;
+    height: 1px;
     background: linear-gradient(to bottom,
         transparent,
-        rgba(232,168,0,0.6),
-        rgba(232,168,0,0.9),
-        rgba(232,168,0,0.6),
+        rgba(232,168,0,0.3),
+        rgba(232,168,0,0.5),
+        rgba(232,168,0,0.3),
         transparent);
-    box-shadow: 0 0 12px rgba(232,168,0,0.4);
+    box-shadow: 0 0 4px rgba(232,168,0,0.15);
     z-index: 11;
     pointer-events: none;
     opacity: 0;
@@ -762,14 +792,14 @@ hr { border: none; border-top: var(--border); margin: 0; }
 .card-scanline {
     position: absolute;
     left: 0; right: 0;
-    height: 2px;
+    height: 1px;
     background: linear-gradient(to bottom,
         transparent,
-        rgba(232,168,0,0.7),
-        rgba(232,168,0,1),
-        rgba(232,168,0,0.7),
+        rgba(232,168,0,0.3),
+        rgba(232,168,0,0.5),
+        rgba(232,168,0,0.3),
         transparent);
-    box-shadow: 0 0 16px rgba(232,168,0,0.5), 0 0 4px rgba(232,168,0,0.8);
+    box-shadow: 0 0 6px rgba(232,168,0,0.15);
     z-index: 5;
     pointer-events: none;
     top: 100%;
@@ -805,7 +835,7 @@ hr { border: none; border-top: var(--border); margin: 0; }
     padding: 2px 7px;
 }
 
-/* Construction line under collection header */
+/* Construction line under collection header — visible on hover only */
 .cad-construction-line {
     position: absolute;
     bottom: 0; left: 0; right: 0;
@@ -815,9 +845,15 @@ hr { border: none; border-top: var(--border); margin: 0; }
         var(--clr-red) 60%,
         transparent);
     transform-origin: left center;
+    opacity: 0;
+    transition: opacity 0.3s ease;
+}
+.collection-header:hover .cad-construction-line {
+    opacity: 1;
 }
 .collection-header {
     position: relative;
+    pointer-events: auto;
 }
 
 /* ---- SOUND TOGGLE ---- */
@@ -888,6 +924,10 @@ hr { border: none; border-top: var(--border); margin: 0; }
     position: absolute;
     inset: 0;
     background: rgba(0,0,0,0.6);
+    pointer-events: none;
+}
+.contact-modal.is-open .contact-modal-backdrop {
+    pointer-events: auto;
 }
 .contact-modal-content {
     position: relative;
@@ -901,6 +941,9 @@ hr { border: none; border-top: var(--border); margin: 0; }
     display: flex;
     flex-direction: column;
     gap: 1.2rem;
+    pointer-events: none;
+}
+.contact-modal.is-open .contact-modal-content {
     pointer-events: auto;
 }
 .contact-modal-header {
diff --git a/src/pages/index.astro b/src/pages/index.astro
index e33b264..57b554a 100644
--- a/src/pages/index.astro
+++ b/src/pages/index.astro
@@ -202,21 +202,23 @@ const schemaOrg = {
                 </div>
             </section>
 
-            <!-- NEWSLETTER -->
-            <section class="newsletter" id="contact" aria-label="Accès anticipé">
+            <!-- CONTACT WHATSAPP -->
+            <section class="newsletter" id="contact" aria-label="Contact WhatsApp">
                 <div class="nl-left">
-                    <p class="label">// ACCÈS_ANTICIPÉ</p>
-                    <h2>REJOINDRE<br>L'EXPÉRIENCE</h2>
+                    <p class="label">// CONTACT</p>
+                    <h2>UNE QUESTION ?<br>PARLONS-EN</h2>
                 </div>
                 <div class="nl-right">
-                    <form class="nl-form" onsubmit="event.preventDefault();" aria-label="Inscription newsletter">
-                        <label for="nl-email">EMAIL :</label>
-                        <div class="nl-row">
-                            <input type="email" id="nl-email" name="email" placeholder="votre@email.com" autocomplete="email" required>
-                            <button type="submit">ENVOYER →</button>
-                        </div>
-                        <p class="mono-sm"><span class="blink">■</span> CONNECTION_STATUS: PENDING</p>
-                    </form>
+                    <div class="nl-form" style="pointer-events: auto;">
+                        <p class="mono-sm" style="line-height: 1.9; margin-bottom: 0.5rem;">Commandes sur mesure, questions techniques,<br>ou simplement dire bonjour.</p>
+                        <a href="https://wa.me/33XXXXXXXXX" target="_blank" rel="noopener" class="whatsapp-btn" aria-label="Nous contacter sur WhatsApp">
+                            <svg width="18" height="18" viewBox="0 0 24 24" fill="currentColor" style="flex-shrink:0;">
+                                <path d="M17.472 14.382c-.297-.149-1.758-.867-2.03-.967-.273-.099-.471-.148-.67.15-.197.297-.767.966-.94 1.164-.173.199-.347.223-.644.075-.297-.15-1.255-.463-2.39-1.475-.883-.788-1.48-1.761-1.653-2.059-.173-.297-.018-.458.13-.606.134-.133.298-.347.446-.52.149-.174.198-.298.298-.497.099-.198.05-.371-.025-.52-.075-.149-.669-1.612-.916-2.207-.242-.579-.487-.5-.669-.51-.173-.008-.371-.01-.57-.01-.198 0-.52.074-.792.372-.272.297-1.04 1.016-1.04 2.479 0 1.462 1.065 2.875 1.213 3.074.149.198 2.096 3.2 5.077 4.487.709.306 1.262.489 1.694.625.712.227 1.36.195 1.871.118.571-.085 1.758-.719 2.006-1.413.248-.694.248-1.289.173-1.413-.074-.124-.272-.198-.57-.347m-5.421 7.403h-.004a9.87 9.87 0 01-5.031-1.378l-.361-.214-3.741.982.998-3.648-.235-.374a9.86 9.86 0 01-1.51-5.26c.001-5.45 4.436-9.884 9.888-9.884 2.64 0 5.122 1.03 6.988 2.898a9.825 9.825 0 012.893 6.994c-.003 5.45-4.437 9.884-9.885 9.884m8.413-18.297A11.815 11.815 0 0012.05 0C5.495 0 .16 5.335.157 11.892c0 2.096.547 4.142 1.588 5.945L.057 24l6.305-1.654a11.882 11.882 0 005.683 1.448h.005c6.554 0 11.89-5.335 11.893-11.893a11.821 11.821 0 00-3.48-8.413z"/>
+                            </svg>
+                            CONTACTEZ-NOUS SUR WHATSAPP
+                        </a>
+                        <p class="mono-sm"><span class="blink">■</span> RÉPONSE SOUS 24H</p>
+                    </div>
                 </div>
             </section>
 
diff --git a/src/scripts/main.js b/src/scripts/main.js
index 58c6d53..f042e5b 100644
--- a/src/scripts/main.js
+++ b/src/scripts/main.js
@@ -205,9 +205,9 @@ document.addEventListener('DOMContentLoaded', () => {
             },
         });
 
-        // 1. Image clip-path reveal (bottom → top scan)
+        // 1. Image clip-path reveal (bottom → top scan) — subtle
         tl.fromTo(img,
-            { clipPath: 'inset(100% 0 0 0)', filter: 'brightness(1.8) grayscale(100%)' },
+            { clipPath: 'inset(100% 0 0 0)', filter: 'brightness(1.1) grayscale(40%)' },
             { clipPath: 'inset(0% 0 0 0)', filter: 'brightness(1) grayscale(15%)',
               duration: 0.9, ease: 'power3.out' },
             0
@@ -405,11 +405,11 @@ document.addEventListener('DOMContentLoaded', () => {
             0.6
         );
 
-        // 7. Panel image scan reveal
+        // 7. Panel image scan reveal — subtle
         const panelImg = document.getElementById('panel-img');
         if (panelImg) {
             techTimeline.fromTo(panelImg,
-                { clipPath: 'inset(0 0 100% 0)', filter: 'brightness(1.8) grayscale(100%)' },
+                { clipPath: 'inset(0 0 100% 0)', filter: 'brightness(1.05) grayscale(30%)' },
                 { clipPath: 'inset(0 0 0% 0)', filter: 'brightness(1) contrast(1) grayscale(0%)',
                   duration: 1, ease: 'power3.out' },
                 0.05