diff --git a/data/app.driftwood.Driftwood.gschema.xml b/data/app.driftwood.Driftwood.gschema.xml
index cf73e71..d3a0b0b 100644
--- a/data/app.driftwood.Driftwood.gschema.xml
+++ b/data/app.driftwood.Driftwood.gschema.xml
@@ -57,14 +57,12 @@
     </key>
     <key name="detail-tab" type="s">
       <choices>
-        <choice value='overview'/>
-        <choice value='system'/>
-        <choice value='security'/>
-        <choice value='storage'/>
+        <choice value='about'/>
+        <choice value='details'/>
       </choices>
-      <default>'overview'</default>
+      <default>'about'</default>
       <summary>Last detail view tab</summary>
-      <description>The last selected tab in the detail view (overview, system, security, storage).</description>
+      <description>The last selected tab in the detail view (about or details).</description>
     </key>
     <key name="auto-check-updates" type="b">
       <default>false</default>
diff --git a/src/ui/detail_view.rs b/src/ui/detail_view.rs
index 99bc3b1..a0320a9 100644
--- a/src/ui/detail_view.rs
+++ b/src/ui/detail_view.rs
@@ -32,29 +32,35 @@ pub fn build_detail_page(record: &AppImageRecord, db: &Rc<Database>) -> adw::Nav
     view_stack.set_vhomogeneous(false);
     view_stack.set_enable_transitions(false);
 
-    // Build tab pages
-    let overview_page = build_overview_tab(record, db);
-    view_stack.add_titled(&overview_page, Some("overview"), "Overview");
-    view_stack.page(&overview_page).set_icon_name(Some("info-symbolic"));
+    // Build tab pages (2-tab layout: About + Details)
+    let about_page = build_overview_tab(record, db);
+    view_stack.add_titled(&about_page, Some("about"), "About");
+    view_stack.page(&about_page).set_icon_name(Some("info-symbolic"));
 
-    let system_page = build_system_tab(record, db, &toast_overlay);
-    view_stack.add_titled(&system_page, Some("system"), "System");
-    view_stack.page(&system_page).set_icon_name(Some("system-run-symbolic"));
+    // Details tab combines System + Security + Storage
+    let system_content = build_system_tab(record, db, &toast_overlay);
+    let security_content = build_security_tab(record, db);
+    let storage_content = build_storage_tab(record, db, &toast_overlay);
 
-    let security_page = build_security_tab(record, db);
-    view_stack.add_titled(&security_page, Some("security"), "Security");
-    view_stack.page(&security_page).set_icon_name(Some("security-medium-symbolic"));
+    let details_page = gtk::Box::builder()
+        .orientation(gtk::Orientation::Vertical)
+        .build();
+    details_page.append(&system_content);
+    details_page.append(&security_content);
+    details_page.append(&storage_content);
 
-    let storage_page = build_storage_tab(record, db, &toast_overlay);
-    view_stack.add_titled(&storage_page, Some("storage"), "Storage");
-    view_stack.page(&storage_page).set_icon_name(Some("drive-harddisk-symbolic"));
+    view_stack.add_titled(&details_page, Some("details"), "Details");
+    view_stack.page(&details_page).set_icon_name(Some("applications-system-symbolic"));
 
-    // Restore last-used tab from GSettings
+    // Restore last-used tab from GSettings (map old tab names to new ones)
     let settings = gio::Settings::new(crate::config::APP_ID);
     let saved_tab = settings.string("detail-tab");
-    if view_stack.child_by_name(&saved_tab).is_some() {
-        view_stack.set_visible_child_name(&saved_tab);
-    }
+    let mapped_tab = match saved_tab.as_str() {
+        "overview" | "about" => "about",
+        "system" | "security" | "storage" | "details" => "details",
+        _ => "about",
+    };
+    view_stack.set_visible_child_name(mapped_tab);
 
     // Persist tab choice on switch
     view_stack.connect_visible_child_name_notify(move |stack| {