diff --git a/docs/api_doc_builder.py b/docs/api_doc_builder.py
index a2c3eb80f7..9fca5b3089 100644
--- a/docs/api_doc_builder.py
+++ b/docs/api_doc_builder.py
@@ -587,7 +587,7 @@ def _create_rst_files_for_dir(src_root_dir_len: int,
         f.write(subdir_stem + '\n')
         f.write(section_line)
         f.write('\n')
-        f.write('.. toctree::\n    :maxdepth: 1\n\n')
+        f.write('.. toctree::\n    :maxdepth: 1\n    :class:    toctree-1-deep\n\n')
 
         # One entry per `.rst` file
         for h_file in elig_h_files:
diff --git a/docs/src/_static/css/custom.css b/docs/src/_static/css/custom.css
index 6ed1f364b0..f351801c06 100644
--- a/docs/src/_static/css/custom.css
+++ b/docs/src/_static/css/custom.css
@@ -441,6 +441,10 @@ code.literal {
   padding-top: 4rem;
 }
 
+/*-------------------------------------------------------------------------
+ * TOC Level 1
+ *-------------------------------------------------------------------------*/
+
 #furo-main-content ul:has(.toctree-l1) {
   max-width: 50%;
   list-style-type: none;
@@ -461,6 +465,35 @@ code.literal {
   margin-top: 2rem;
 }
 
+/* Special Case:  1-level-deep TOCs.
+ * Note:  `...:not(:has(.toctree-l2))` won't do it because it ALSO selects
+ *        .toctree-l1 elements in more complex TOCs, some of which simply don't have
+ *        .toctree-l2 children!  Instead, we want the special case where the TOC
+ *        is limited by design to 1 level.  Example:  Widgets overview TOC.
+ */
+
+#furo-main-content .toctree-1-deep .toctree-l1 + .toctree-l1 {
+  margin-top: 0.65rem;
+}
+
+/*
+ * Welcome to LVGL Docs (home page) table of contents
+ *-------------------------------------------------------------------------
+ */
+
+#furo-main-content .toctree-landing-page .toctree-l1 > a {
+  font-size: 1rem;
+  font-weight: 600;
+}
+
+#furo-main-content .toctree-landing-page .toctree-l1 + .toctree-l1 {
+  margin-top: 0.125rem;
+}
+
+/*-------------------------------------------------------------------------
+ * TOC Level 2
+ *-------------------------------------------------------------------------*/
+
 #furo-main-content ul:has(.toctree-l2) {
   list-style-type: none;
   padding: 0;
@@ -479,6 +512,10 @@ code.literal {
   text-decoration: underline;
 }
 
+/*-------------------------------------------------------------------------
+ * TOC Level 3
+ *-------------------------------------------------------------------------*/
+
 #furo-main-content .toctree-l3 > a {
   color: var(--color-text-base);
 }
@@ -622,20 +659,6 @@ table.docutils th p {
   background-color: rgba(var(--color-background-base-rgb), 0.04);
 }
 
-/*
- * Welcome to LVGL Docs (home page) table of contents
- *-------------------------------------------------------------------------
- */
-
-#welcome-to-lvgl-docs .toctree-l1 > a {
-  font-size: 1rem;
-  font-weight: 600;
-}
-
-#welcome-to-lvgl-docs .toctree-l1 + .toctree-l1 {
-  margin-top: 0.125rem;
-}
-
 /*
  * Language selector (home page)
  *-------------------------------------------------------------------------
diff --git a/docs/src/contributing/index.rst b/docs/src/contributing/index.rst
index 64aaa29046..34c2c63a9b 100644
--- a/docs/src/contributing/index.rst
+++ b/docs/src/contributing/index.rst
@@ -5,6 +5,7 @@ Contributing
 ============
 
 .. toctree::
+    :class:    toctree-1-deep
     :maxdepth: 1
 
     introduction
diff --git a/docs/src/details/auxiliary-modules/xml/index.rst b/docs/src/details/auxiliary-modules/xml/index.rst
index 5a54e914da..91234c253e 100644
--- a/docs/src/details/auxiliary-modules/xml/index.rst
+++ b/docs/src/details/auxiliary-modules/xml/index.rst
@@ -5,6 +5,7 @@ XML - Declarative UI
 ====================
 
 .. toctree::
+    :class:    toctree-1-deep
     :maxdepth: 1
 
     intro
diff --git a/docs/src/details/index.rst b/docs/src/details/index.rst
deleted file mode 100644
index 90e833d6e6..0000000000
--- a/docs/src/details/index.rst
+++ /dev/null
@@ -1,20 +0,0 @@
-.. _reference:
-
-=======
-Details
-=======
-
-.. toctree::
-    :maxdepth: 2
-
-    ../examples
-    integration/index
-    common-widget-features/index
-    widgets/index
-    main-modules/index
-    auxiliary-modules/index
-    libs/index
-    debugging/index
-    ../contributing/index
-    ../CHANGELOG
-    ../API/index
diff --git a/docs/src/details/integration/os/buildroot/index.rst b/docs/src/details/integration/os/buildroot/index.rst
index 32b60e0f84..f38071e5c8 100644
--- a/docs/src/details/integration/os/buildroot/index.rst
+++ b/docs/src/details/integration/os/buildroot/index.rst
@@ -11,6 +11,7 @@ platforms on a single Linux-based development system.
 
 
 .. toctree::
+   :class:    toctree-1-deep
    :titlesonly:
    :maxdepth: 1
 
diff --git a/docs/src/details/integration/os/yocto/index.rst b/docs/src/details/integration/os/yocto/index.rst
index f8cdf51e77..52dde202c7 100644
--- a/docs/src/details/integration/os/yocto/index.rst
+++ b/docs/src/details/integration/os/yocto/index.rst
@@ -18,6 +18,7 @@ concepts of Yocto and to help beginners to start with Yocto.
 
 
 .. toctree::
+   :class:    toctree-1-deep
    :titlesonly:
    :maxdepth: 1
 
diff --git a/docs/src/details/libs/index.rst b/docs/src/details/libs/index.rst
index fb1a9dc0ae..5c482c5114 100644
--- a/docs/src/details/libs/index.rst
+++ b/docs/src/details/libs/index.rst
@@ -6,6 +6,7 @@
 
 
 .. toctree::
+    :class:    toctree-1-deep
     :maxdepth: 1
 
     arduino_esp_littlefs
diff --git a/docs/src/details/widgets/index.rst b/docs/src/details/widgets/index.rst
index 3162853245..317be86b1c 100644
--- a/docs/src/details/widgets/index.rst
+++ b/docs/src/details/widgets/index.rst
@@ -5,6 +5,7 @@ All Widgets
 ===========
 
 .. toctree::
+    :class:    toctree-1-deep
     :maxdepth: 1
 
     base_widget
@@ -12,6 +13,7 @@ All Widgets
 |hr_left_250|
 
 .. toctree::
+    :class:    toctree-1-deep
     :maxdepth: 1
 
     3dtexture
diff --git a/docs/src/index.rst b/docs/src/index.rst
index 6331b119d8..37a4fe57cc 100644
--- a/docs/src/index.rst
+++ b/docs/src/index.rst
@@ -58,6 +58,7 @@ Introduction
 ------------
 
 .. toctree::
+    :class:    toctree-1-deep  toctree-landing-page
     :maxdepth: 1
 
     intro/introduction
@@ -68,6 +69,7 @@ Details
 -------
 
 .. toctree::
+    :class:    toctree-1-deep  toctree-landing-page
     :maxdepth: 1
 
     examples
@@ -84,6 +86,7 @@ Appendix
 --------
 
 .. toctree::
+    :class:    toctree-1-deep  toctree-landing-page
     :maxdepth: 1
 
     contributing/index
diff --git a/docs/src/intro/index.rst b/docs/src/intro/index.rst
deleted file mode 100644
index 300fba433f..0000000000
--- a/docs/src/intro/index.rst
+++ /dev/null
@@ -1,11 +0,0 @@
-.. _intro-page:
-
-============
-Introduction
-============
-
-.. toctree::
-    :maxdepth: 1
-
-    introduction
-    getting_started