diff --git a/src/_data/site.js b/src/_data/site.js
new file mode 100644
index 0000000..88f2040
--- /dev/null
+++ b/src/_data/site.js
@@ -0,0 +1,4 @@
+module.exports = {
+  posthogKey: process.env.POSTHOG_API_KEY || null,
+  posthogHost: process.env.POSTHOG_API_HOST || 'https://us.i.posthog.com',
+}
diff --git a/src/index.njk b/src/index.njk
index 38031c3..01a0bc3 100644
--- a/src/index.njk
+++ b/src/index.njk
@@ -12,6 +12,16 @@ description: Soluciones digitales de élite para empresas que necesitan operar,
     <title>{{ title }}</title>
     <link rel="icon" href="/images/favicon.svg" type="image/svg+xml">
     <link rel="stylesheet" href="/css/styles.css">
+{% if site.posthogKey %}
+<script>
+!function(t,e){var o,n,p,r;e.__SV||(window.posthog=e,e._i=[],e.init=function(i,s,a){function g(t,e){var o=e.split(".");2==o.length&&(t=t[o[0]],e=o[1]),t[e]=function(){t.push([e].concat(Array.prototype.slice.call(arguments,0)))}}(p=t.createElement("script")).type="text/javascript",p.crossOrigin="anonymous",p.async=!0,p.src=s.api_host+"/static/array.full.js",(r=t.getElementsByTagName("script")[0]).parentNode.insertBefore(p,r);var u=e;void 0!==a?u=e[a]=[]:a="posthog",u.people=u.people||[],u.toString=function(t){var e="posthog";return"posthog"!==a&&(e+="."+a),t||(e+=" (stub)"),e},u.people.toString=function(){return u.toString(1)+".people (stub)"},o="capture identify alias people.set people.set_once set_config register register_once unregister opt_out_capturing has_opted_out_capturing opt_in_capturing reset isFeatureEnabled onFeatureFlags getSurveys getActiveMatchingSurveys captureException".split(" "),n=0;n<o.length;n++)g(u,o[n]);e._i.push([i,s,a])},e.__SV=1)}(document,window.posthog||[]);
+posthog.init('{{ site.posthogKey }}', {
+  api_host: '{{ site.posthogHost }}',
+  capture_performance: true,
+  disable_session_recording: false,
+})
+</script>
+{% endif %}
   </head>
   <body>
     <header class="sticky top-0 z-50 border-b border-line/70 bg-white/92 backdrop-blur">
@@ -342,5 +352,46 @@ description: Soluciones digitales de élite para empresas que necesitan operar,
         <p>(c) 2026 2piDev. Engineered Elegance.</p>
       </div>
     </footer>
+{% if site.posthogKey %}
+<script>
+(function() {
+  document.addEventListener('click', function(e) {
+    var link = e.target.closest('a');
+    if (!link) return;
+    if (link.matches('.btn-primary, .btn-secondary, .nav-link')) {
+      posthog.capture('cta_click', {
+        label: link.textContent.trim(),
+        href: link.getAttribute('href')
+      });
+    }
+  });
+
+  var form = document.querySelector('form');
+  if (form) {
+    form.addEventListener('submit', function() {
+      var data = new FormData(form);
+      posthog.capture('contact_form_submitted', {
+        nombre: data.get('nombre') || '',
+        empresa: data.get('empresa') || '',
+        email: data.get('email') || ''
+      });
+    });
+  }
+
+  var sections = ['servicios', 'soluciones', 'tecnologias', 'contacto', 'casos'];
+  var observer = new IntersectionObserver(function(entries) {
+    entries.forEach(function(entry) {
+      if (entry.isIntersecting) {
+        posthog.capture('section_view', { section: entry.target.id });
+      }
+    });
+  }, { threshold: 0.3 });
+  sections.forEach(function(id) {
+    var el = document.getElementById(id);
+    if (el) observer.observe(el);
+  });
+})();
+</script>
+{% endif %}
   </body>
 </html>
