diff --git a/src/llamafactory/webui/components/chatbot.py b/src/llamafactory/webui/components/chatbot.py
index 05cc4a1f..314a711d 100644
--- a/src/llamafactory/webui/components/chatbot.py
+++ b/src/llamafactory/webui/components/chatbot.py
@@ -76,7 +76,7 @@ def create_chat_box(
                 submit_btn = gr.Button(variant="primary")
 
             with gr.Column(scale=1):
-                max_new_tokens = gr.Slider(minimum=8, maximum=4096, value=512, step=1)
+                max_new_tokens = gr.Slider(minimum=8, maximum=8192, value=1024, step=1)
                 top_p = gr.Slider(minimum=0.01, maximum=1.0, value=0.7, step=0.01)
                 temperature = gr.Slider(minimum=0.01, maximum=1.5, value=0.95, step=0.01)
                 clear_btn = gr.Button()
diff --git a/src/llamafactory/webui/css.py b/src/llamafactory/webui/css.py
index a48a21c5..b7e4c357 100644
--- a/src/llamafactory/webui/css.py
+++ b/src/llamafactory/webui/css.py
@@ -25,12 +25,15 @@ CSS = r"""
 }
 
 .thinking-summary span {
-  border: 1px solid #e0e0e0 !important;
   border-radius: 4px !important;
   padding: 4px !important;
   cursor: pointer !important;
   font-size: 14px !important;
-  background: #333333 !important;
+  background: rgb(245, 245, 245) !important;
+}
+
+.dark .thinking-summary span {
+  background: rgb(73, 73, 73) !important;
 }
 
 .thinking-container {