diff --git a/src/manual/index.html b/src/manual/index.html
new file mode 100644
index 0000000..927725e
--- /dev/null
+++ b/src/manual/index.html
@@ -0,0 +1,30 @@
+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <title>SUMMITWAVE BEACON MANUAL</title>
+  <style>
+    :root { color-scheme: light dark; }
+    html, body { height: 100%; }
+    body {
+      margin: 0;
+      display: grid;
+      place-items: center;
+      font: 16px system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Noto Sans", Arial, sans-serif;
+      line-height: 1.5;
+    }
+    main { text-align: center; padding: 24px; }
+    h1 { font-size: clamp(20px, 5vw, 32px); margin: 0 0 8px; }
+    p { margin: 0; color: #666; }
+    @media (prefers-color-scheme: dark) { p { color: #aaa; } }
+  </style>
+  <meta name="robots" content="noindex, nofollow, noarchive" />
+</head>
+<body>
+  <main>
+    <h1>SUMMITWAVE BEACON MANUAL</h1>
+    <p>Under maintenance — coming soon.</p>
+  </main>
+</body>
+</html>
diff --git a/src/robots.txt b/src/robots.txt
index 432682e..4163bec 100644
--- a/src/robots.txt
+++ b/src/robots.txt
@@ -1,4 +1,5 @@
 User-agent: *
 Allow: /
+Disallow: /manual/
 
 Sitemap: https://summitwave.eu/sitemap.xml
