diff --git a/doc/_static/css/theme_zeiss.css b/doc/_static/css/theme_zeiss.css
index 59ebf42..0fb53c8 100644
--- a/doc/_static/css/theme_zeiss.css
+++ b/doc/_static/css/theme_zeiss.css
@@ -3,35 +3,43 @@
  *
  * See https://brand.zeiss.com/
  *
- * Copyright 2023, Carl Zeiss GOM Metrology GmbH
+ * Copyright 2026, Carl Zeiss GOM Metrology GmbH
  ******************************************************************************/
 
 /* Based on Read the Docs theme */
 @import 'theme.css';
 
-
 /******************************************************************************
  * Fonts
  ******************************************************************************/
 
-/* Use font "ZEISS Frutiger Next W1G" */
-@font-face {
-	font-family: "Frutiger Next";
-	src: url("../fonts/ZEISS-Frutiger-Next-W02-Regular.woff2") format("woff2"),
-	url("../fonts/ZEISS-Frutiger-Next-W02-Regular-Italic.woff2") format("woff2"),
-    url("../fonts/ZEISS-Frutiger-Next-W02-Medium.woff2") format("woff2"),
-	url("../fonts/ZEISS-Frutiger-Next-W02-Bold.woff2") format("woff2");
-}
+/* Use font "Noto Sans" */
+@import url('https://fonts.googleapis.com/css2?family=Noto+Sans:wght@400;500;700&display=swap');
 
 :root {
-    --font-family-frutiger: "Frutiger Next", "Helvetica Neue", Helvetica, Verdana, Arial, sans-serif;
+    --font-family-sans: "Noto Sans", "Helvetica Neue", Helvetica, Verdana, Arial, sans-serif;
 }
 
 html, body, .rst-content .toctree-wrapper>p.caption, h1, h2, h3, h4, h5, h6, legend {
-    font-family: var(--font-family-frutiger);
+    font-family: var(--font-family-sans);
     color: #000000; /* was #404040 */
 }
 
+h1 {
+	font-size: 32px;
+}
+
+h2 {
+	font-size: 28px;
+}
+
+h3 {
+	font-size: 24px;
+}
+
+h4 {
+	font-size: 20px;
+}
 
 /******************************************************************************
  * Links
@@ -110,6 +118,16 @@ a:visited {
 }
 
 
+/******************************************************************************
+ * Page content
+ ******************************************************************************/
+
+/* Change max-width from 800px to 1000px */
+.wy-nav-content {
+    max-width: 1000px;
+}
+
+
 /******************************************************************************
  * Admonitions
  ******************************************************************************/
@@ -159,6 +177,11 @@ pre {
     background: #F2F5F8;
 }
 
+/* Changed mermaid container background color from default 'pre' to transparent */
+pre.mermaid {
+	background: #00000000;
+}
+
 /* Changed from #3D7B7B (increased contrast) */
 .highlight .c1 {
     color: #2D6B6B;
@@ -169,3 +192,23 @@ pre {
     color: #9A12EF;
     font-weight: bold;
 }
+
+/******************************************************************************
+ * Separator between feed entries
+ ******************************************************************************/
+.feed-ref {
+    display: block;
+    height: 1px;
+    border: 0;
+    border-top: 1px solid #e1e4e5;
+    margin: 24px 0;
+    padding: 20px 0 0 0;
+}
+
+/******************************************************************************
+ * Separator between feed entries
+ ******************************************************************************/
+.bordered-figure {
+    border: 1px solid #000; /* Change the color and width as needed */
+    display: inline-block; /* Ensures the border wraps around the figure */
+}
diff --git a/doc/_static/fonts/ZEISS-Frutiger-Next-W02-Bold.woff2 b/doc/_static/fonts/ZEISS-Frutiger-Next-W02-Bold.woff2
deleted file mode 100644
index b90718e..0000000
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diff --git a/doc/_static/fonts/ZEISS-Frutiger-Next-W02-Medium.woff2 b/doc/_static/fonts/ZEISS-Frutiger-Next-W02-Medium.woff2
deleted file mode 100644
index 1f3ddbf..0000000
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diff --git a/doc/_static/fonts/ZEISS-Frutiger-Next-W02-Regular-Italic.woff2 b/doc/_static/fonts/ZEISS-Frutiger-Next-W02-Regular-Italic.woff2
deleted file mode 100644
index d12eb50..0000000
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diff --git a/doc/_static/fonts/ZEISS-Frutiger-Next-W02-Regular.woff2 b/doc/_static/fonts/ZEISS-Frutiger-Next-W02-Regular.woff2
deleted file mode 100644
index 44ffd0b..0000000
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diff --git a/doc/_static/fonts/ZEISSFrutigerNextUI-Bold.woff2 b/doc/_static/fonts/ZEISSFrutigerNextUI-Bold.woff2
deleted file mode 100644
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