Activation du scroll tactile fluide sur mobile et tablette pour les pages de guidage

src/styles/Launcher.css

@@ -21,19 +21,31 @@
   --sncf-shadow-hover: 0 8px 28px rgba(0, 34, 87, 0.14);
 }
 
-/* Conteneur principal responsive */
+html {
+  scroll-behavior: smooth;
+  -webkit-text-size-adjust: 100%;
+}
+
+body {
+  overflow-y: auto !important;
+  overflow-x: hidden !important;
+  -webkit-overflow-scrolling: touch !important;
+}
+
+/* Conteneur principal responsive avec défilement fluide */
 .launcher-container {
   width: 100%;
   max-width: 980px;
   margin: 0 auto;
-  padding: 16px;
+  padding: 16px 16px 48px 16px;
   box-sizing: border-box;
   font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
+  overflow-y: visible;
 }
 
 @media (min-width: 768px) {
   .launcher-container {
-    padding: 24px 32px;
+    padding: 24px 32px 64px 32px;
   }
 }