diff --git a/lead-engine/trading_twins/manager.py b/lead-engine/trading_twins/manager.py
index 3e070ba4..394d5a52 100644
--- a/lead-engine/trading_twins/manager.py
+++ b/lead-engine/trading_twins/manager.py
@@ -221,11 +221,11 @@ SUCCESS_HTML = """
 <head>
     <meta charset="utf-8">
     <style>
-        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; text-align: center; color: #333; padding: 40px 20px; background: transparent; }
-        .icon { font-size: 48px; margin-bottom: 20px; }
-        h2 { margin-bottom: 10px; color: #10b981; }
-        p { font-size: 16px; line-height: 1.5; color: #4b5563; }
-        .details { font-weight: bold; margin-top: 15px; color: #111827; }
+        body {{ font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; text-align: center; color: #333; padding: 40px 20px; background: transparent; }}
+        .icon {{ font-size: 48px; margin-bottom: 20px; }}
+        h2 {{ margin-bottom: 10px; color: #10b981; }}
+        p {{ font-size: 16px; line-height: 1.5; color: #4b5563; }}
+        .details {{ font-weight: bold; margin-top: 15px; color: #111827; }}
     </style>
 </head>
 <body>
@@ -244,11 +244,11 @@ FALLBACK_HTML = """
 <head>
     <meta charset="utf-8">
     <style>
-        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; text-align: center; color: #333; margin: 0; padding: 0; background: transparent; }
-        .message-box { padding: 20px; background-color: #fef3c7; color: #92400e; border-bottom: 1px solid #fcd34d; margin-bottom: 20px; }
-        h3 { margin: 0 0 10px 0; font-size: 18px; }
-        p { margin: 0; font-size: 14px; }
-        .iframe-container { width: 100%; height: 800px; border: none; }
+        body {{ font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; text-align: center; color: #333; margin: 0; padding: 0; background: transparent; }}
+        .message-box {{ padding: 20px; background-color: #fef3c7; color: #92400e; border-bottom: 1px solid #fcd34d; margin-bottom: 20px; }}
+        h3 {{ margin: 0 0 10px 0; font-size: 18px; }}
+        p {{ margin: 0; font-size: 14px; }}
+        .iframe-container {{ width: 100%; height: 800px; border: none; }}
     </style>
 </head>
 <body>
