diff --git a/src/routes/admin/ui.tsx b/src/routes/admin/ui.tsx
index 557b519..2537226 100644
--- a/src/routes/admin/ui.tsx
+++ b/src/routes/admin/ui.tsx
@@ -29,10 +29,26 @@ export const Layout = ({ title, children }: LayoutProps) => {
           href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap"
           rel="stylesheet"
         />
+        {/* designSystem and interactiveScripts are static trusted strings, not user input */}
         <style dangerouslySetInnerHTML={{ __html: designSystem }} />
         <script dangerouslySetInnerHTML={{ __html: interactiveScripts + ";" }} />
       </head>
-      <body class="page">{children}</body>
+      <body class="page">
+        <header class="site-header">
+          <a href="https://kill-the.news/" class="site-header-logo" target="_blank" rel="noopener">
+            kill-the-news
+          </a>
+          <span class="site-header-label">admin</span>
+        </header>
+        {children}
+        <footer class="site-footer">
+          <a href="https://kill-the.news/" target="_blank" rel="noopener">kill-the.news</a>
+          <span class="site-footer-sep" aria-hidden="true">·</span>
+          <a href="https://github.com/sponsors/juherr" target="_blank" rel="noopener" class="site-footer-sponsor">
+            ♥ Sponsor
+          </a>
+        </footer>
+      </body>
     </html>
   );
 };
diff --git a/src/styles/layout.css b/src/styles/layout.css
index bda91b6..bf63790 100644
--- a/src/styles/layout.css
+++ b/src/styles/layout.css
@@ -181,3 +181,68 @@
   margin-bottom: var(--spacing-md);
   color: var(--color-text-primary);
 }
+
+/* Site Header */
+.site-header {
+  display: flex;
+  align-items: center;
+  gap: var(--spacing-sm);
+  padding: var(--spacing-md) var(--spacing-xl);
+  border-bottom: 1px solid var(--color-border);
+}
+
+.site-header-logo {
+  font-size: var(--font-size-sm);
+  font-weight: var(--font-weight-semibold);
+  color: var(--color-primary);
+  text-decoration: none;
+  letter-spacing: -0.01em;
+  transition: opacity var(--transition-fast);
+}
+
+.site-header-logo:hover {
+  opacity: 0.8;
+}
+
+.site-header-label {
+  font-size: var(--font-size-xs);
+  color: var(--color-text-tertiary);
+  padding: 2px 6px;
+  border: 1px solid var(--color-border);
+  border-radius: var(--radius-pill);
+}
+
+/* Site Footer */
+.site-footer {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: var(--spacing-sm);
+  padding: var(--spacing-lg) var(--spacing-xl);
+  margin-top: auto;
+  border-top: 1px solid var(--color-border);
+  font-size: var(--font-size-xs);
+  color: var(--color-text-tertiary);
+}
+
+.site-footer a {
+  color: var(--color-text-tertiary);
+  text-decoration: none;
+  transition: color var(--transition-fast);
+}
+
+.site-footer a:hover {
+  color: var(--color-text-secondary);
+}
+
+.site-footer-sep {
+  opacity: 0.4;
+}
+
+.site-footer-sponsor {
+  color: var(--color-text-tertiary) !important;
+}
+
+.site-footer-sponsor:hover {
+  color: #db61a2 !important;
+}
