diff --git a/content.js b/content.js
new file mode 100644
index 0000000..c8f3752
--- /dev/null
+++ b/content.js
@@ -0,0 +1,13 @@
+const observer = new MutationObserver(() => {
+  const overlay = document.querySelector('.payok__wrap');
+  if (!overlay) return;
+
+  const freeRadio = overlay.querySelector('input[name="pay-ok"][value="ok"]');
+  const submitBtn = overlay.querySelector('button.payok__submit');
+  if (!freeRadio || !submitBtn) return;
+
+  freeRadio.click();
+  setTimeout(() => submitBtn.click(), 100);
+});
+
+observer.observe(document.body, { childList: true, subtree: true });