UI: revert global margin tweaks; apply targeted spacing by setting elem_id=main-row and shrinking its top margin

app.py

@@ -4353,16 +4353,6 @@ Please be patient — each paper takes about 8–10 minutes to process.
 This work, developed in collaboration with [TVG@Oxford](https://torrvision.com/index.html) and [UWaterloo](https://uwaterloo.ca/), has been accepted to [NeurIPS 2025 D&B](https://neurips.cc/).
 The framework builds upon 🐪 [CAMEL-ai](https://github.com/camel-ai/camel).
 """)
-    # Compact global spacing to reduce gap between header and inputs
-    gr.HTML(
-        "<style>"
-        ".gradio-container .prose h1{margin-bottom:0.4rem!important;}"
-        ".gradio-container .prose p{margin:0.2rem 0!important;}"
-        ".gradio-container .gr-row{margin-top:0.25rem!important;}"
-        ".gradio-container .gr-accordion{margin-top:0.25rem!important;}"
-        "</style>"
-    )
-
     # Top-right logos (camel, tvg, waterloo) if available
     gr.HTML(_ui_header_logos_html())