diff --git a/site/calepin.toml b/site/calepin.toml
index d73a908..a01f9d7 100644
--- a/site/calepin.toml
+++ b/site/calepin.toml
@@ -30,9 +30,8 @@ floating = true
 [menus]
 main = [
     { label = "Home", target = "home/index.typ" },
-    { label = "IT", target = "it/index.typ" },
-    { label = "OT", target = "ot/index.typ" },
-    { label = "Security", target = "security/index.typ" },
+    { label = "Computer Science", target = "cs/index.typ" },
+    { label = "HomeLab", target = "homelab/index.typ" },
     { label = "Medias", target = "medias/index.typ" },
 ]
 social = [
@@ -59,24 +58,18 @@ item = [
 
 
 [[sidebar.section]]
-title = "IT"
+title = "Computer Science"
 item = [
-    { target = "it/index.typ" },
-    { glob = "it/*" }
+    { target = "cs/index.typ" },
+    { glob = "cs/*" }
 ]
 
-[[sidebar.section]]
-title = "OT"
-item = [
-    { target = "ot/index.typ" },
-    { glob = "ot/*" }
-]
 
 [[sidebar.section]]
-title = "Security"
+title = "HomeLab"
 item = [
-    { target = "security/index.typ" },
-    { glob = "security/*" }
+    { target = "homelab/index.typ" },
+    { glob = "homelab/*" }
 ]
 
 [[sidebar.section]]
diff --git a/site/cs/index.typ b/site/cs/index.typ
new file mode 100644
index 0000000..71982f9
--- /dev/null
+++ b/site/cs/index.typ
@@ -0,0 +1,7 @@
+#set document(title: [Computer Science])
+#metadata((title: "Overview", translation_key: "cs-index")) <website-metadata>
+
+#title()
+
+Placeholder page for the Computer Science category.
+The real content comes later.
diff --git a/site/homelab/backup.typ b/site/homelab/backup.typ
new file mode 100644
index 0000000..024548a
--- /dev/null
+++ b/site/homelab/backup.typ
@@ -0,0 +1,6 @@
+#set document(title: [Backup])
+#metadata((title: "Backup", translation_key: "homelab-backup")) <website-metadata>
+
+#title()
+
+Placeholder page — the real content comes later.
diff --git a/site/homelab/index.typ b/site/homelab/index.typ
new file mode 100644
index 0000000..ccbe565
--- /dev/null
+++ b/site/homelab/index.typ
@@ -0,0 +1,7 @@
+#set document(title: [HomeLab])
+#metadata((title: "Overview", translation_key: "homelab")) <website-metadata>
+
+#title()
+
+Placeholder page for the homelab category.
+The real content comes later.
diff --git a/site/it/index.typ b/site/it/index.typ
deleted file mode 100644
index 4faf389..0000000
--- a/site/it/index.typ
+++ /dev/null
@@ -1,7 +0,0 @@
-#set document(title: [IT])
-#metadata((title: "Overview", translation_key: "it-index")) <website-metadata>
-
-#title()
-
-Placeholder page for the IT category.
-The real content comes later.
diff --git a/site/ot/index.typ b/site/ot/index.typ
deleted file mode 100644
index cb87941..0000000
--- a/site/ot/index.typ
+++ /dev/null
@@ -1,7 +0,0 @@
-#set document(title: [OT])
-#metadata((title: "Overview", translation_key: "ot-index")) <website-metadata>
-
-#title()
-
-Placeholder page for the OT category.
-The real content comes later.
diff --git a/site/security/index.typ b/site/security/index.typ
deleted file mode 100644
index 0d70aa4..0000000
--- a/site/security/index.typ
+++ /dev/null
@@ -1,7 +0,0 @@
-#set document(title: [Security])
-#metadata((title: "Overview", translation_key: "security")) <website-metadata>
-
-#title()
-
-Placeholder page for the security category.
-The real content comes later.
diff --git a/site/security/ssh.typ b/site/security/ssh.typ
deleted file mode 100644
index 6ca0c38..0000000
--- a/site/security/ssh.typ
+++ /dev/null
@@ -1,6 +0,0 @@
-#set document(title: [SSH])
-#metadata((title: "SSH", translation_key: "security-ssh")) <website-metadata>
-
-#title()
-
-Placeholder page — the real content comes later.