Update UI notes

app.py

@@ -556,6 +556,8 @@ css = """
     --border-sub: #374151;
     --text-main: #f3f4f6;
     --text-sub: #9ca3af;
+    --primary-light: #064e3b;
+    --primary-dark: #ecfdf5;
 }
 
 /* 顶部 Banner */
@@ -805,7 +807,7 @@ with gr.Blocks(theme=gr.themes.Soft(primary_hue="emerald"), css=css, title="V0 P
             <div class="step-header" style="margin-top: 20px; border-bottom: none;">
                 <div class="step-num">3</div>
                 <div class="step-title">Results</div>
-                <div class="step-desc">Context limited to 16 samples due to HF CPU restrictions.</div>
+                <div class="step-desc">Limited to 16 context size (vs. standard 256) by HF CPU limits; GPU enables ms-level speeds.</div>
             </div>
             """)