diff --git a/src/components/EditionToc.astro b/src/components/EditionToc.astro
index 9f8cfd4..7f6a5ff 100644
--- a/src/components/EditionToc.astro
+++ b/src/components/EditionToc.astro
@@ -7,7 +7,10 @@ const entries = (await getCollection("archicratie"))
   .filter((e) => e.slug.startsWith("archicrat-ia/"))
   .sort((a, b) => (a.data.order ?? 0) - (b.data.order ?? 0));
 
-const href = (slug) => `/archicratie/${slug}/`;
+// ✅ On route l’Essai-thèse sur /archicrat-ia/<slug-sans-prefix>/
+// (Astro trailingSlash = always → on garde le "/" final)
+const strip = (s) => String(s || "").replace(/^archicrat-ia\//, "");
+const href = (slug) => `/archicrat-ia/${strip(slug)}/`;
 ---
 
 <nav class="toc-global" aria-label="Table des matières — ArchiCraT-IA">
@@ -66,7 +69,6 @@ const href = (slug) => `/archicratie/${slug}/`;
     opacity: .88;
   }
 
-  /* On garde <ol> mais on neutralise tout marker/numéro */
   .toc-global__list{
     list-style: none;
     margin: 0;
@@ -148,7 +150,6 @@ const href = (slug) => `/archicratie/${slug}/`;
     scrollbar-gutter: stable;
   }
 
-
   @media (prefers-color-scheme: dark){
     .toc-global{ background: rgba(255,255,255,0.04); }
     .toc-link:hover{ background: rgba(255,255,255,0.06); }