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app.py

@@ -271,11 +271,12 @@ def create_interface():
     }
     """
     
-    demo = gr.Blocks(title="Authenticity Detection System", css=custom_css)
-    
-    with demo:
+    with gr.Blocks(title="Authenticity Detection System") as demo:
         
-        gr.HTML("""
+        gr.HTML(f"""
+        <style>
+        {custom_css}
+        </style>
         <header style='background: white; border-bottom: 1px solid #e5e7eb; margin-bottom: 32px;'>
             <div style='padding: 16px 0;'>
                 <div style='display: flex; align-items: center; gap: 12px;'>