diff --git a/resources/js/singles/sommaire.ts b/resources/js/singles/sommaire.ts
new file mode 100644
index 0000000..dda7980
--- /dev/null
+++ b/resources/js/singles/sommaire.ts
@@ -0,0 +1,16 @@
+export function handleSmoothScrollToTitle(): void {
+  const sommaireTitles: NodeListOf<Element> = document.querySelectorAll('.sommaire-index li a');
+  for (const title of sommaireTitles) {
+    title.addEventListener('click', (e) => {
+      e.preventDefault();
+
+      const target = title.getAttribute('href');
+      if (!target) return;
+
+      const targetElement = document.querySelector(target);
+      if (!targetElement) return;
+
+      targetElement.scrollIntoView({ behavior: 'smooth' });
+    });
+  }
+}