diff --git a/documentation/wiki/assets/css/extra.css b/documentation/wiki/assets/css/extra.css
index ef893ad19..57d1dfbcb 100644
--- a/documentation/wiki/assets/css/extra.css
+++ b/documentation/wiki/assets/css/extra.css
@@ -417,6 +417,18 @@
   background: rgba(36,120,181,0.04);
 }
 
+/* ═══════════════════════════════════════════════
+   HOMEPAGE WIDTH CONSTRAINT
+   (nav + toc hidden on index → content goes full-width; cap it)
+═══════════════════════════════════════════════ */
+
+.md-content[data-md-component="content"] .md-typeset .hero,
+.md-content[data-md-component="content"] .md-typeset .card-grid,
+.md-content[data-md-component="content"] .md-typeset .countries,
+.md-content[data-md-component="content"] .md-typeset .section-heading {
+  max-width: 61rem;
+}
+
 /* ═══════════════════════════════════════════════
    HERO SECTION (homepage)
 ═══════════════════════════════════════════════ */
diff --git a/documentation/wiki/developer-guide/repository-guide.md b/documentation/wiki/developer-guide/repository-guide.md
index 9eaf4171e..c19fa1228 100644
--- a/documentation/wiki/developer-guide/repository-guide.md
+++ b/documentation/wiki/developer-guide/repository-guide.md
@@ -1,7 +1,27 @@
+---
+hide:
+  - toc
+---
+
 # SimPaths Repository Guide
 
 A guide to navigating the SimPaths repository structure and codebase.
 
+---
+
+## Table of Contents
+
+1. [Repository Structure](#repository-structure)
+2. [Core Components](#core-components)
+3. [Key Directories Explained](#key-directories-explained)
+4. [Sub-package Detail](#sub-package-detail)
+5. [Data Pipeline Reference](#data-pipeline-reference)
+6. [Development Workflow](#development-workflow)
+7. [Code Navigation Tips](#code-navigation-tips)
+8. [Additional Resources](#additional-resources)
+
+---
+
 ## Repository Structure
 
 ```