diff --git a/apps/web/e2e/content.spec.ts b/apps/web/e2e/content.spec.ts
index 993712f..2c59712 100644
--- a/apps/web/e2e/content.spec.ts
+++ b/apps/web/e2e/content.spec.ts
@@ -62,7 +62,7 @@ test('page lifecycle: create via the sidebar, rename, appears in the sidebar', a
   const page = await context.newPage();
   await page.goto(`/p/${pond.slug}`);
   await page.getByRole('button', { name: /new page|neue seite/i }).click();
-  await page.getByLabel(/title|titel/i).fill(title);
+  await page.locator('.sidebar').getByLabel(/title|titel/i).fill(title);
   await page.getByRole('button', { name: /create|erstellen/i }).click();
   await expect(page.locator('.sidebar__page--active')).toHaveText(title);
 
diff --git a/apps/web/e2e/sidebar.spec.ts b/apps/web/e2e/sidebar.spec.ts
index f101a5e..2d4a571 100644
--- a/apps/web/e2e/sidebar.spec.ts
+++ b/apps/web/e2e/sidebar.spec.ts
@@ -110,7 +110,7 @@ test('new-page flow: button opens a title prompt and the editor opens on create'
   await page.goto(`/p/${pond.slug}`);
 
   await page.getByRole('button', { name: /new page|neue seite/i }).click();
-  await page.getByLabel(/title|titel/i).fill(title);
+  await page.locator('.sidebar').getByLabel(/title|titel/i).fill(title);
   await page.getByRole('button', { name: /create|erstellen/i }).click();
 
   await expect(page).toHaveURL(new RegExp(`/p/${pond.slug}/.+`));
diff --git a/apps/web/src/layout/AppLayout.tsx b/apps/web/src/layout/AppLayout.tsx
index afae63a..5d8ce8e 100644
--- a/apps/web/src/layout/AppLayout.tsx
+++ b/apps/web/src/layout/AppLayout.tsx
@@ -1,4 +1,5 @@
 import { useEffect, useMemo, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Outlet } from 'react-router-dom';
 
 import { usePersistentState } from '../lib/use-persistent-state';
@@ -10,6 +11,7 @@ import { clampSidebarWidth, SIDEBAR_DEFAULT_WIDTH_REM, SidebarResizer } from './
 import { TopBar } from './TopBar';
 
 export function AppLayout(): React.JSX.Element {
+  const { t } = useTranslation();
   const [sidebarCollapsed, setSidebarCollapsed] = usePersistentState('ui.sidebar.collapsed', false);
   const [sidebarWidth, setSidebarWidth] = usePersistentState(
     'ui.sidebar.width',
@@ -53,6 +55,10 @@ export function AppLayout(): React.JSX.Element {
     <SidebarChromeContext.Provider value={setForcedHidden}>
       <PageActionsSlotContext.Provider value={actionsSlot}>
         <div className="app">
+          {/* First tab stop: jump over topbar + sidebar (#166, WCAG 2.4.1). */}
+          <a className="skip-link" href="#main">
+            {t('layout.skipToContent')}
+          </a>
           <TopBar
             sidebarCollapsed={collapsed}
             onToggleSidebar={() => setSidebarCollapsed(!sidebarCollapsed)}
@@ -61,13 +67,20 @@ export function AppLayout(): React.JSX.Element {
             className="app-body"
             style={{ '--sidebar-width': `${widthRem}rem` } as React.CSSProperties}
           >
-            <Sidebar collapsed={collapsed} />
-            {!collapsed && <SidebarResizer widthRem={widthRem} onResize={setSidebarWidth} />}
+            <Sidebar
+              collapsed={collapsed}
+              // Inside the nav landmark so no content sits outside landmarks
+              // (#166); hidden with the sidebar as before.
+              resizer={
+                !collapsed && <SidebarResizer widthRem={widthRem} onResize={setSidebarWidth} />
+              }
+            />
             <div className="main-column">
               {/* tabIndex: the main area is the app's scroll container; on
                   pages without focusable content (e.g. legal texts) keyboard
-                  users could otherwise not scroll it (#165, WCAG 2.1.1). */}
-              <main className="main" tabIndex={0}>
+                  users could otherwise not scroll it (#165, WCAG 2.1.1).
+                  id: skip-link target (#166). */}
+              <main className="main" id="main" tabIndex={0}>
                 <Outlet />
               </main>
               {/* Outside the scroll container: always visible at the bottom
diff --git a/apps/web/src/layout/Sidebar.tsx b/apps/web/src/layout/Sidebar.tsx
index f1acca2..3cc0153 100644
--- a/apps/web/src/layout/Sidebar.tsx
+++ b/apps/web/src/layout/Sidebar.tsx
@@ -36,6 +36,8 @@ import { useCurrentPondRoute } from './use-pond-route';
 
 interface SidebarProps {
   collapsed: boolean;
+  /** The resize handle, rendered inside the nav landmark (#166). */
+  resizer?: React.ReactNode;
 }
 
 const SORT_MODES: SidebarSortMode[] = ['alpha', 'created', 'manual'];
@@ -50,7 +52,7 @@ const VIEW_MODES: SidebarViewMode[] = ['folders', 'labels'];
  * every user can override it locally. Collapse behavior and the layout
  * contract (`nav.sidebar`, `aria-hidden`) are unchanged from #4/#25.
  */
-export function Sidebar({ collapsed }: SidebarProps): React.JSX.Element {
+export function Sidebar({ collapsed, resizer }: SidebarProps): React.JSX.Element {
   const { t } = useTranslation();
   const { pondSlug } = useCurrentPondRoute();
 
@@ -67,6 +69,7 @@ export function Sidebar({ collapsed }: SidebarProps): React.JSX.Element {
       inert={collapsed}
       aria-label={t('layout.sidebar.label')}
     >
+      {resizer}
       {!pond.data ? (
         <p className="sidebar__hint">{t('layout.sidebar.placeholder')}</p>
       ) : (
diff --git a/apps/web/src/pages/PageEditorPage.tsx b/apps/web/src/pages/PageEditorPage.tsx
index 5560e2e..955b9f1 100644
--- a/apps/web/src/pages/PageEditorPage.tsx
+++ b/apps/web/src/pages/PageEditorPage.tsx
@@ -560,11 +560,15 @@ export function PageEditorPage(): React.JSX.Element {
         )}
       <div className="editor-page">
         <div className="editor-page__header">
+          {/* The visible title is an input; give assistive tech the page
+              heading it expects on an article view (#166). */}
+          <h1 className="visually-hidden">{title || t('title.placeholder')}</h1>
           <input
             type="text"
             className="editor-page__title"
             value={title}
             placeholder={t('title.placeholder')}
+            aria-label={t('title.label')}
             disabled={mode !== 'edit'}
             onChange={(event) => setTitle(event.target.value)}
             onBlur={() => void saveTitle()}
diff --git a/apps/web/src/styles/base.css b/apps/web/src/styles/base.css
index 4dc4299..809dc0f 100644
--- a/apps/web/src/styles/base.css
+++ b/apps/web/src/styles/base.css
@@ -97,6 +97,23 @@ button {
   flex: 1;
 }
 
+/* Skip link (#166, WCAG 2.4.1): first tab stop, visible only on focus. */
+.skip-link {
+  position: absolute;
+  left: -9999px;
+  top: 0;
+  z-index: 1200;
+  padding: var(--space-2) var(--space-4);
+  background: var(--color-accent);
+  color: var(--color-accent-contrast);
+  border-radius: 0 0 var(--radius) 0;
+  text-decoration: none;
+}
+
+.skip-link:focus-visible {
+  left: 0;
+}
+
 /* Narrow viewports (issue #165, WCAG 1.4.10): the topbar wraps onto a
    second row instead of pushing the page wider than the viewport; every
    control stays visible and reachable. The search button drops to its
@@ -133,6 +150,8 @@ button {
 .sidebar {
   width: var(--sidebar-width);
   flex-shrink: 0;
+  /* Anchor for the absolutely positioned resize handle (#166). */
+  position: relative;
   /* Column flex so the trash footer can pin to the bottom (margin-top: auto). */
   display: flex;
   flex-direction: column;
@@ -152,12 +171,16 @@ button {
 
 /* Drag handle on the sidebar's right edge (issue #99). */
 .sidebar-resizer {
-  flex-shrink: 0;
+  /* Lives inside the nav landmark (#166); straddles the sidebar edge. */
+  position: absolute;
+  top: 0;
+  bottom: 0;
+  right: -3px;
   width: 6px;
-  margin-left: -3px;
   cursor: col-resize;
   touch-action: none;
   background: transparent;
+  z-index: 5;
 }
 
 .sidebar-resizer:hover,
diff --git a/packages/shared/i18n/de/common.json b/packages/shared/i18n/de/common.json
index a2bdae7..a5b9465 100644
--- a/packages/shared/i18n/de/common.json
+++ b/packages/shared/i18n/de/common.json
@@ -56,7 +56,8 @@
     },
     "user": {
       "anonymous": "Nicht angemeldet"
-    }
+    },
+    "skipToContent": "Zum Inhalt springen"
   },
   "pondHome": {
     "empty": "Dieser Teich hat noch keine Seiten – lege eine über die Seitenleiste an."
@@ -95,5 +96,6 @@
   },
   "settingsNav": {
     "label": "Abschnitte"
-  }
+  },
+  "tableActions": "Aktionen"
 }
diff --git a/packages/shared/i18n/de/editor.json b/packages/shared/i18n/de/editor.json
index c5de04a..e150d7c 100644
--- a/packages/shared/i18n/de/editor.json
+++ b/packages/shared/i18n/de/editor.json
@@ -1,6 +1,7 @@
 {
   "title": {
-    "placeholder": "Unbenannte Seite"
+    "placeholder": "Unbenannte Seite",
+    "label": "Seitentitel"
   },
   "mode": {
     "edit": "Bearbeiten",
diff --git a/packages/shared/i18n/en/common.json b/packages/shared/i18n/en/common.json
index a552651..b1a7f48 100644
--- a/packages/shared/i18n/en/common.json
+++ b/packages/shared/i18n/en/common.json
@@ -56,7 +56,8 @@
     },
     "user": {
       "anonymous": "Not signed in"
-    }
+    },
+    "skipToContent": "Skip to content"
   },
   "pondHome": {
     "empty": "This pond doesn't have any pages yet — create one from the sidebar."
@@ -95,5 +96,6 @@
   },
   "settingsNav": {
     "label": "Sections"
-  }
+  },
+  "tableActions": "Actions"
 }
diff --git a/packages/shared/i18n/en/editor.json b/packages/shared/i18n/en/editor.json
index 7486fdc..bd76c46 100644
--- a/packages/shared/i18n/en/editor.json
+++ b/packages/shared/i18n/en/editor.json
@@ -1,6 +1,7 @@
 {
   "title": {
-    "placeholder": "Untitled page"
+    "placeholder": "Untitled page",
+    "label": "Page title"
   },
   "mode": {
     "edit": "Edit",