diff --git a/nginx.conf b/nginx.conf
index 36f0d70..b4d737d 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -2,7 +2,7 @@ server {
     listen 80;
     server_name rebours.studio;
 
-    root /var/www/rebours/dist;
+    root /var/www/html/rebours/dist;
     index index.html;
 
     # HTML : jamais caché
@@ -10,14 +10,19 @@ server {
         add_header Cache-Control "no-store";
     }
 
-    # CSS / JS avec hash Astro : cache long immutable
-    location ~* \.(css|js)$ {
+    # Fichiers Astro avec hash dans _astro/ : cache long immutable
+    location ~* ^/_astro/ {
         add_header Cache-Control "public, max-age=31536000, immutable";
     }
 
-    # Assets (images, fonts) : cache long
-    location ~* \.(jpg|jpeg|png|gif|webp|svg|woff2|woff|ttf)$ {
-        add_header Cache-Control "public, max-age=31536000, immutable";
+    # CSS / JS sans hash (style.css, main.js) : revalidation à chaque visite
+    location ~* \.(css|js)$ {
+        add_header Cache-Control "no-cache";
+    }
+
+    # Assets (images, fonts) : cache 7 jours
+    location ~* \.(jpg|jpeg|png|gif|webp|svg|woff2|woff|ttf|ico)$ {
+        add_header Cache-Control "public, max-age=604800";
     }
 
     location / {
diff --git a/public/main.js b/public/main.js
index bdc167d..f2178f6 100644
--- a/public/main.js
+++ b/public/main.js
@@ -63,7 +63,7 @@ document.addEventListener('DOMContentLoaded', () => {
 
     // ---- INTERACTIVE GRID ----
     const gridContainer = document.getElementById('interactive-grid');
-    const CELL = 60;
+    const CELL = window.innerWidth <= 600 ? 38 : 60;
     const COLORS = [
         'rgba(232,168,0,0.45)',
         'rgba(232,168,0,0.32)',
@@ -73,6 +73,7 @@ document.addEventListener('DOMContentLoaded', () => {
     function buildGrid() {
         if (!gridContainer) return;
         gridContainer.innerHTML = '';
+        const CELL = window.innerWidth <= 600 ? 38 : 60;
         const cols = Math.ceil(window.innerWidth / CELL);
         const rows = Math.ceil(window.innerHeight / CELL);
         gridContainer.style.display = 'grid';
diff --git a/public/sitemap.xml b/public/sitemap.xml
index 2c28572..1f598f8 100644
--- a/public/sitemap.xml
+++ b/public/sitemap.xml
@@ -7,7 +7,7 @@
     <priority>1.0</priority>
   </url>
   <url>
-    <loc>https://rebours.studio/collection/lumiere-orbitale/</loc>
+    <loc>https://rebours.studio/collection/solar-altar/</loc>
     <lastmod>2026-02-27</lastmod>
     <changefreq>monthly</changefreq>
     <priority>0.9</priority>
diff --git a/public/style.css b/public/style.css
index b0b3af1..3a44a8b 100644
--- a/public/style.css
+++ b/public/style.css
@@ -595,24 +595,22 @@ hr { border: none; border-top: var(--border); margin: 0; }
 /* ---- RESPONSIVE ---- */
 @media (max-width: 900px) {
     .hero, .newsletter { grid-template-columns: 1fr; }
-    .hero-left { border-right: none; border-bottom: var(--border); min-height: 70vw; padding: 3rem var(--pad); }
+    .hero-left { border-right: none; border-bottom: var(--border); min-height: 70vw; padding: 3rem var(--pad); order: -1; }
     .hero-right { height: 55vw; }
     .nl-left { border-right: none; border-bottom: var(--border); }
     .product-grid { grid-template-columns: 1fr 1fr; }
     .panel-inner { grid-template-columns: 1fr; }
     .panel-img-col { height: 50vw; }
     .panel-info-col { overflow-y: auto; }
-
 }
 @media (max-width: 600px) {
-    .product-grid { grid-template-columns: 1fr; }
+    .product-grid { grid-template-columns: 1fr; margin: 0 1rem; border-left: none; }
+    .product-card { border-left: 2px solid #111; }
     .header-nav { gap: 1rem; }
-    .hero-left { min-height: 85vw; }
+    .hero { height: auto; }
+    .hero-left { min-height: unset; padding: 2rem var(--pad); order: -1; }
+    .hero-right { height: 60vw; }
 
     .cursor-dot, .cursor-outline { display: none; }
     body { cursor: auto; }
 }
-@media (max-width: 600px) {
-    .product-grid { grid-template-columns: 1fr; }
-    .header-nav { gap: 1rem; }
-}
diff --git a/src/pages/collection/[slug].astro b/src/pages/collection/[slug].astro
index e12d20a..0a1faa5 100644
--- a/src/pages/collection/[slug].astro
+++ b/src/pages/collection/[slug].astro
@@ -4,7 +4,7 @@ import Base from '../../layouts/Base.astro';
 export function getStaticPaths() {
     const PRODUCTS = [
         {
-            slug: 'lumiere-orbitale',
+            slug: 'solar-altar',
             name: 'Solar_Altar',
             title: 'REBOURS — Solar Altar | Collection 001',
             description: 'Lampe de table unique. Béton texturé coulé à la main + dôme céramique laqué. Pièce unique fabriquée à Paris.',
diff --git a/src/pages/success.astro b/src/pages/success.astro
index 33aad23..e4775b6 100644
--- a/src/pages/success.astro
+++ b/src/pages/success.astro
@@ -82,6 +82,19 @@ import Base from '../layouts/Base.astro';
         }
         a.back:hover { background: var(--clr-black); color: var(--clr-white); }
         #loading { color: #888; font-size: 0.78rem; }
+
+        @media (max-width: 600px) {
+            main { grid-template-columns: 1fr; }
+            .left {
+                padding: 2rem 1.5rem;
+                min-height: 55vw;
+                border-right: none;
+                border-bottom: var(--border);
+            }
+            h1 { font-size: clamp(2rem, 12vw, 3rem); }
+            .right { padding: 2rem 1.5rem; justify-content: flex-start; }
+            a.back { align-self: stretch; text-align: center; }
+        }
     </style>
 
     <div style="display:flex; flex-direction:column; min-height:100vh;">