diff --git a/app/partials/TableOfContents.tsx b/app/partials/TableOfContents.tsx
index 4eeb1df..c3d297d 100644
--- a/app/partials/TableOfContents.tsx
+++ b/app/partials/TableOfContents.tsx
@@ -16,19 +16,23 @@ export function TableOfContents() {
 
 	const getHeadings = () => {
 		return data.sections
+			.flatMap((section) => [section, ...section.children])
 			.map((section) => {
 				if (!section.hash) return null;
 
 				const el = document.getElementById(section.hash);
+				console.log(section.hash, el);
 				if (!el) return null;
 
 				const style = window.getComputedStyle(el);
 				const scrollMt = Number.parseFloat(style.scrollMarginTop);
 
 				const top = window.scrollY + el.getBoundingClientRect().top - scrollMt;
-				return { id: section.hash, top };
+				return { id: section.hash, top, level: section.level };
 			})
-			.filter((x): x is { id: string; top: number } => x !== null);
+			.filter(
+				(x): x is { id: string; top: number; level: number } => x !== null,
+			);
 	};
 
 	createEffect(() => {
@@ -46,8 +50,11 @@ export function TableOfContents() {
 			}
 			setCurrentSection(current);
 		}
+
 		window.addEventListener("scroll", onScroll, { passive: true });
+
 		onScroll();
+
 		return () => {
 			window.removeEventListener("scroll", onScroll);
 		};
@@ -55,10 +62,14 @@ export function TableOfContents() {
 
 	function isActive(section: DocSection) {
 		if (section.hash === currentSection()) return true;
-		return false;
-		// if (!section.children) return false;
+		if (!section.children) return false;
 
-		// return section.children.findIndex(isActive) > -1;
+		return (
+			section.children.findIndex((child) => {
+				console.log(child.hash, currentSection());
+				return child.hash === currentSection();
+			}) !== -1
+		);
 	}
 
 	return (
@@ -87,6 +98,26 @@ export function TableOfContents() {
 										{section.content}
 									</Link>
 								</h3>
+								{section.children.length > 0 && (
+									<ol class="mt-2 space-y-2 pl-4">
+										<For each={section.children}>
+											{(subsection) => (
+												<li>
+													<Link
+														href={`#${subsection.hash}`}
+														class={clsx(
+															isActive(subsection)
+																? "text-violet-500"
+																: "font-normal text-slate-500 hover:text-slate-700",
+														)}
+													>
+														{subsection.content}
+													</Link>
+												</li>
+											)}
+										</For>
+									</ol>
+								)}
 							</li>
 						)}
 					</For>
diff --git a/app/services/DocCache.ts b/app/services/DocCache.ts
index 99646ed..e1c71e5 100644
--- a/app/services/DocCache.ts
+++ b/app/services/DocCache.ts
@@ -22,6 +22,7 @@ export type DocSection = {
 	content: string;
 	hash?: string;
 	subsections: string[];
+	children: DocSection[];
 	level?: number;
 };
 
@@ -98,15 +99,32 @@ class DocCache {
 		if (["heading", "paragraph"].includes(node.type)) {
 			const content = this.nodeToString(node).trim();
 
-			if (node.type === "heading" && node.attributes?.level <= 2) {
+			if (node.type === "heading" && node.attributes?.level <= 3) {
 				const hash = (node.attributes?.id as string) ?? this.slugify(content);
 				const subsections: string[] = [];
-				sections.push({
-					content,
-					hash,
-					subsections,
-					level: node.attributes?.level,
-				});
+
+				if (node.attributes?.level === 2) {
+					sections.push({
+						content,
+						hash,
+						subsections,
+						children: [],
+						level: node.attributes?.level,
+					});
+				} else if (node.attributes?.level === 3) {
+					const lastSection = sections.at(-1);
+
+					if (lastSection) {
+						lastSection.subsections.push(hash);
+						lastSection.children.push({
+							content,
+							hash,
+							subsections,
+							children: [],
+							level: node.attributes?.level,
+						});
+					}
+				}
 			} else {
 				sections.at(-1)?.subsections.push(content);
 			}
diff --git a/temp.json b/temp.json
new file mode 100644
index 0000000..9049d0b
--- /dev/null
+++ b/temp.json
@@ -0,0 +1 @@
+[{"content":"qu-est-ce-que-le-hook-use-reducer","hash":"qu-est-ce-que-le-hook-use-reducer","level":2,"subsections":[{"content":"quand-utiliser-use-reducer","hash":"quand-utiliser-use-reducer","level":3,"subsections":[{"content":"a-quoi-ressemble-un-reducer","hash":"a-quoi-ressemble-un-reducer","level":2,"subsections":[{"content":"comment-utiliser-use-reducer","hash":"comment-utiliser-use-reducer","level":2,"subsections":[{"content":"on-nettoie-tout-ca","hash":"on-nettoie-tout-ca","level":2,"subsections":[{"content":"typage-des-actions","hash":"typage-des-actions","level":3,"subsections":[{"content":"action-creators","hash":"action-creators","level":3,"subsections":[{"content":"les-fichiers-complets","hash":"les-fichiers-complets","level":2,"subsections":[{"content":"fichier-counter-jsx-ou-counter-tsx","hash":"fichier-counter-jsx-ou-counter-tsx","level":3,"subsections":[{"content":"c-est-l-heure-des-questions","hash":"c-est-l-heure-des-questions","level":2,"subsections":[{"content":"conclusion","hash":"conclusion","level":2,"subsections":[]}]}]}]}]}]}]}]}]}]}]}]
\ No newline at end of file