Apply aggressive TOC hiding rules to fix persistent right sidebar

custom.css

@@ -2,6 +2,9 @@
 
 /* Show the left navigation sidebar but modify styling */
 .sidebar {
+    display: block !important;
+    width: auto !important;
+    visibility: visible !important;
     background-color: rgba(245, 245, 247, 0.95) !important;
     border-right: 1px solid #e1e4e8 !important;
 }
@@ -10,10 +13,32 @@
     padding: 10px !important;
 }
 
-/* Hide the floating right-side table of contents */
+/* Hide the floating right-side table of contents - using more specific and aggressive rules */
+.nav-wide-wrapper, 
+div[class*="toc"], 
 .page-toc, 
 .pagetoc, 
-.table-of-contents {
+.table-of-contents,
+aside.right-side,
+aside.sidebar-right,
+.floating-toc,
+#toc-container {
+    display: none !important;
+    visibility: hidden !important;
+    width: 0 !important;
+    height: 0 !important;
+    position: absolute !important;
+    right: -9999px !important;
+    opacity: 0 !important;
+    pointer-events: none !important;
+}
+
+/* Override any inline styles that might be applied to the TOC */
+[id*="toc"],
+[class*="toc"],
+[class*="content"] [class*="toc"],
+[id*="sidebar-toc"],
+[class*="sidebar-toc"] {
     display: none !important;
     visibility: hidden !important;
 }
@@ -26,6 +51,17 @@
     padding: 0 30px !important;
 }
 
+/* Ensure the main content fills the space */
+main, 
+.content, 
+.page, 
+article,
+.page-content {
+    max-width: 100% !important;
+    margin-right: 0 !important;
+    padding-right: 0 !important;
+}
+
 /* Improve chapter navigation */
 .chapter {
     line-height: 1.3 !important;