diff --git a/index.html b/index.html
index b7d0127..5251d4b 100644
--- a/index.html
+++ b/index.html
@@ -1521,6 +1521,55 @@
 
         });
     </script>
+
+    <!-- Success Modal -->
+    <div id="successModal" class="fixed inset-0 z-50 flex items-center justify-center bg-black/80 backdrop-blur-md hidden opacity-0 transition-opacity duration-300">
+        <div id="successModalContent" class="w-full max-w-md p-8 bg-slate-900 border border-purple-500/30 rounded-2xl shadow-2xl relative text-center space-y-6 mx-4 transform scale-95 transition-transform duration-300">
+            <div class="w-16 h-16 bg-emerald-500/10 border border-emerald-500/30 text-emerald-400 rounded-full flex items-center justify-center text-3xl font-bold mx-auto shadow-[0_0_15px_rgba(16,185,129,0.2)]">
+                ✓
+            </div>
+            <h2 class="font-display font-black text-2xl text-white uppercase tracking-wider">Заявка успешно оплачена!</h2>
+            <p class="text-sm text-slate-300 leading-relaxed">
+                Спасибо за оплату!<br>
+                Наш киберспортивный координатор свяжется с вами в ближайшее время, чтобы открыть доступ к материалам и записать на занятие.
+            </p>
+            <button onclick="closeSuccessModal()" class="w-full py-3 bg-purple-600 hover:bg-purple-500 text-white font-display font-black text-xs uppercase tracking-wider rounded-xl shadow-lg shadow-purple-600/20 hover:shadow-purple-600/40 transform hover:-translate-y-0.5 transition duration-200">
+                Закрыть
+            </button>
+        </div>
+    </div>
+
+    <script>
+        document.addEventListener('DOMContentLoaded', () => {
+            const urlParams = new URLSearchParams(window.location.search);
+            if (urlParams.get('success') === 'true') {
+                const modal = document.getElementById('successModal');
+                const content = document.getElementById('successModalContent');
+                
+                modal.classList.remove('hidden');
+                setTimeout(() => {
+                    modal.classList.add('opacity-100');
+                    content.classList.remove('scale-95');
+                    content.classList.add('scale-100');
+                }, 50);
+            }
+        });
+
+        function closeSuccessModal() {
+            const modal = document.getElementById('successModal');
+            const content = document.getElementById('successModalContent');
+            
+            modal.classList.remove('opacity-100');
+            content.classList.remove('scale-100');
+            content.classList.add('scale-95');
+            setTimeout(() => {
+                modal.classList.add('hidden');
+                // Remove success parameter from URL so it doesn't show again on refresh
+                const newUrl = window.location.protocol + "//" + window.location.host + window.location.pathname;
+                window.history.replaceState({ path: newUrl }, '', newUrl);
+            }, 300);
+        }
+    </script>
 </body>
 
 </html>
\ No newline at end of file
diff --git a/server.py b/server.py
index c6546d0..1ce563a 100644
--- a/server.py
+++ b/server.py
@@ -563,7 +563,7 @@ def submit():
         amount = service_info["price_numeric"]
 
         # 1. YooKassa checkout generation
-        return_url = f"{request.host_url}form/index.html?success=true&reg_id={reg_id}&service_id={service_id}"
+        return_url = f"{request.host_url}?success=true&reg_id={reg_id}&service_id={service_id}"
         payment_info = create_yookassa_payment(
             reg_id=reg_id,
             amount=amount,