Update app.py

app.py

@@ -92,7 +92,6 @@ def rft_rcqm_unification_lab(p1_early_input, p2_early_input, nex_coupling_input)
         subplot_titles=('Unified Expansion (H_RFT)', 'JWST Maturity Solution')
     )
 
-    # Hubble curve
     fig.add_trace(
         go.Scatter(x=z_range, y=h_vals, mode='lines',
                    line=dict(color='#FF00FF', width=3)),
@@ -105,7 +104,6 @@ def rft_rcqm_unification_lab(p1_early_input, p2_early_input, nex_coupling_input)
         annotation_position='bottom right'
     )
 
-    # Maturity curves
     z_high = np.linspace(7, 12, 100)
     fig.add_trace(
         go.Scatter(x=z_high, y=smd_rft(z_high),
@@ -301,11 +299,15 @@ solar1_tab = gr.TabbedInterface(
     ["Verified Manifold", "Dynamic Generator"]
 )
 
-demo = gr.TabbedInterface(
-    [rft_tab, solar1_tab],
-    ["RFT Expansion Lab", "Solar1 Manifold Explorer"],
-    css=custom_css
-)
+# ============================================================
+#  TOP-LEVEL BLOCKS (CSS APPLIED HERE)
+# ============================================================
+
+with gr.Blocks(css=custom_css) as demo:
+    gr.TabbedInterface(
+        [rft_tab, solar1_tab],
+        ["RFT Expansion Lab", "Solar1 Manifold Explorer"]
+    )
 
 if __name__ == "__main__":
     demo.launch()