diff --git a/site/404.html b/site/404.html
index 81db57e..d0fb3e6 100644
--- a/site/404.html
+++ b/site/404.html
@@ -7,6 +7,7 @@
   <meta name="robots" content="noindex">
   <link rel="icon" href="/assets/favicon-64.png" type="image/png">
   <link rel="stylesheet" href="/style.css?v=6a97785f0c">
+  <script defer src="https://vibecafe.ai/telemetry/v1.js" data-vc-product-id="cmv8u919f000006jn7drz77nq" data-vc-auth-key="vc_web_c-yibzSfTCQbiSeKM5aP14a9oOlJiH0uTZucIU_pzRU"></script>
   <style>
     .lost { min-height: 100svh; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 22px; padding: 48px var(--gutter); text-align: center; }
     .lost img { width: 72px; height: 72px; }
diff --git a/site/index.html b/site/index.html
index a33f770..d263801 100644
--- a/site/index.html
+++ b/site/index.html
@@ -32,6 +32,7 @@
   <link rel="stylesheet" href="/how/how.css?v=68de86ac7c">
   <script type="module" src="/how/how.js?v=28dba282cc"></script>
   <script src="/motion.js?v=09073b35d1" defer></script>
+  <script defer src="https://vibecafe.ai/telemetry/v1.js" data-vc-product-id="cmv8u919f000006jn7drz77nq" data-vc-auth-key="vc_web_c-yibzSfTCQbiSeKM5aP14a9oOlJiH0uTZucIU_pzRU"></script>
   <script type="application/ld+json">
 {
     "@context": "https://schema.org",
diff --git a/site/zh/index.html b/site/zh/index.html
index 1c6a5de..7d651fe 100644
--- a/site/zh/index.html
+++ b/site/zh/index.html
@@ -31,6 +31,7 @@
   <link rel="stylesheet" href="/how/how.css?v=68de86ac7c">
   <script type="module" src="/how/how.js?v=28dba282cc"></script>
   <script src="/motion.js?v=09073b35d1" defer></script>
+  <script defer src="https://vibecafe.ai/telemetry/v1.js" data-vc-product-id="cmv8u919f000006jn7drz77nq" data-vc-auth-key="vc_web_c-yibzSfTCQbiSeKM5aP14a9oOlJiH0uTZucIU_pzRU"></script>
   <script type="application/ld+json">
 {
     "@context": "https://schema.org",