UI: full-width parchment (drop centering that exposed dark gutters)

app.py

@@ -116,9 +116,8 @@ CSS = """
   color:var(--wb-ink)!important; font-weight:700; font-variant:small-caps; letter-spacing:.5px;}
 .gradio-container .label-wrap .icon, .gradio-container .label-wrap svg {color:var(--wb-oxblood)!important; opacity:1;}
 
-/* ---- keep the whole thing centered + readable on very wide screens ---- */
-.gradio-container {max-width:1320px; margin-left:auto; margin-right:auto;}
-body {background: var(--body-background-fill, #e6d8b8);}
+/* Paint the page edge-to-edge in parchment in BOTH modes (no dark gutters). */
+html, body, gradio-app {background:#e6d8b8 !important;}
 """