diff --git a/account.html b/account.html
index e39d762..df64fae 100644
--- a/account.html
+++ b/account.html
@@ -1,6 +1,23 @@
 <!DOCTYPE html>
 <html lang="en">
 <head>
+    <!-- Google tag (gtag.js) -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=G-ZGYSK3Q7WT"></script>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+
+      gtag('config', 'G-ZGYSK3Q7WT');
+    </script>
+
+    <!-- Google Tag Manager -->
+    <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
+    new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
+    j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
+    'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+    })(window,document,'script','dataLayer','GTM-KQBQ422H');</script>
+    <!-- End Google Tag Manager -->
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Account - Berta1Clarity</title>
@@ -236,8 +253,13 @@
             }
         }
     </style>
+
 </head>
 <body>
+    <!-- Google Tag Manager (noscript) -->
+    <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-KQBQ422H"
+    height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+    <!-- End Google Tag Manager (noscript) -->
     <header>
         <a href="index.html" class="logo">
             <img src="https://berta.one/favicon.png" alt="Berta.one">
diff --git a/clarity-engine-v2.html b/clarity-engine-v2.html
index 174cb0f..fed37df 100644
--- a/clarity-engine-v2.html
+++ b/clarity-engine-v2.html
@@ -1,6 +1,23 @@
 <!DOCTYPE html>
 <html lang="en">
 <head>
+    <!-- Google tag (gtag.js) -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=G-ZGYSK3Q7WT"></script>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+
+      gtag('config', 'G-ZGYSK3Q7WT');
+    </script>
+
+    <!-- Google Tag Manager -->
+    <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
+    new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
+    j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
+    'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+    })(window,document,'script','dataLayer','GTM-KQBQ422H');</script>
+    <!-- End Google Tag Manager -->
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Berta1Clarity</title>
@@ -225,6 +242,10 @@
     </style>
 </head>
 <body>
+    <!-- Google Tag Manager (noscript) -->
+    <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-KQBQ422H"
+    height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+    <!-- End Google Tag Manager (noscript) -->
 <div class="app">
     <aside class="sidebar">
         <div class="logo"><h1>Berta1<span>Clarity</span></h1><p>Think once. Build right.</p></div>
diff --git a/icons/generate-icons.html b/icons/generate-icons.html
index cd3886e..eb7b8ea 100644
--- a/icons/generate-icons.html
+++ b/icons/generate-icons.html
@@ -1,6 +1,23 @@
 <!DOCTYPE html>
 <html>
 <head>
+    <!-- Google tag (gtag.js) -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=G-ZGYSK3Q7WT"></script>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+
+      gtag('config', 'G-ZGYSK3Q7WT');
+    </script>
+
+    <!-- Google Tag Manager -->
+    <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
+    new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
+    j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
+    'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+    })(window,document,'script','dataLayer','GTM-KQBQ422H');</script>
+    <!-- End Google Tag Manager -->
     <title>Generate PWA Icons</title>
     <style>
         body { font-family: system-ui; padding: 40px; background: #1a1a1a; color: #fff; }
@@ -12,6 +29,10 @@
     </style>
 </head>
 <body>
+    <!-- Google Tag Manager (noscript) -->
+    <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-KQBQ422H"
+    height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+    <!-- End Google Tag Manager (noscript) -->
     <h1>Clarity Engine Icons</h1>
     <p>Right-click each icon and "Save image as..." to download.</p>
     <div class="icons" id="icons"></div>
diff --git a/index.html b/index.html
index aecde07..4988165 100644
--- a/index.html
+++ b/index.html
@@ -1,6 +1,23 @@
 <!DOCTYPE html>
 <html lang="en">
 <head>
+    <!-- Google tag (gtag.js) -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=G-ZGYSK3Q7WT"></script>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+
+      gtag('config', 'G-ZGYSK3Q7WT');
+    </script>
+
+    <!-- Google Tag Manager -->
+    <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
+    new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
+    j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
+    'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+    })(window,document,'script','dataLayer','GTM-KQBQ422H');</script>
+    <!-- End Google Tag Manager -->
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Berta1Clarity - AI-Powered Thinking Tool</title>
@@ -157,8 +174,13 @@
             .tool-card { min-width: 140px; padding: 20px 24px; }
         }
     </style>
+
 </head>
 <body>
+    <!-- Google Tag Manager (noscript) -->
+    <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-KQBQ422H"
+    height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+    <!-- End Google Tag Manager (noscript) -->
     <header>
         <a href="https://berta.one" target="_blank" class="logo" style="text-decoration:none;color:inherit;">
             <img src="https://berta.one/favicon.png" alt="Berta.one">
diff --git a/login.html b/login.html
index 6cd06bc..9fff238 100644
--- a/login.html
+++ b/login.html
@@ -1,6 +1,23 @@
 <!DOCTYPE html>
 <html lang="en">
 <head>
+    <!-- Google tag (gtag.js) -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=G-ZGYSK3Q7WT"></script>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+
+      gtag('config', 'G-ZGYSK3Q7WT');
+    </script>
+
+    <!-- Google Tag Manager -->
+    <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
+    new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
+    j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
+    'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+    })(window,document,'script','dataLayer','GTM-KQBQ422H');</script>
+    <!-- End Google Tag Manager -->
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Login - Berta1Clarity</title>
@@ -227,8 +244,13 @@
             }
         }
     </style>
+
 </head>
 <body>
+    <!-- Google Tag Manager (noscript) -->
+    <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-KQBQ422H"
+    height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+    <!-- End Google Tag Manager (noscript) -->
     <header>
         <a href="index.html" class="logo">
             <img src="https://berta.one/favicon.png" alt="Berta.one">
diff --git a/pricing.html b/pricing.html
index 8d57131..4d087ed 100644
--- a/pricing.html
+++ b/pricing.html
@@ -1,6 +1,23 @@
 <!DOCTYPE html>
 <html lang="en">
 <head>
+    <!-- Google tag (gtag.js) -->
+    <script async src="https://www.googletagmanager.com/gtag/js?id=G-ZGYSK3Q7WT"></script>
+    <script>
+      window.dataLayer = window.dataLayer || [];
+      function gtag(){dataLayer.push(arguments);}
+      gtag('js', new Date());
+
+      gtag('config', 'G-ZGYSK3Q7WT');
+    </script>
+
+    <!-- Google Tag Manager -->
+    <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
+    new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
+    j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
+    'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
+    })(window,document,'script','dataLayer','GTM-KQBQ422H');</script>
+    <!-- End Google Tag Manager -->
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Pricing - Berta1Clarity</title>
@@ -255,8 +272,13 @@
             .hero h1 { font-size: 36px; }
         }
     </style>
+
 </head>
 <body>
+    <!-- Google Tag Manager (noscript) -->
+    <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-KQBQ422H"
+    height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+    <!-- End Google Tag Manager (noscript) -->
     <header>
         <a href="index.html" class="logo">
             <img src="https://berta.one/favicon.png" alt="Berta.one">
