Update the grid on the front page

documentation/docs/index.md

@@ -16,27 +16,28 @@ GeoModel is a **complete toolkit** to write and manage the **detector descriptio
 
     [:octicons-arrow-right-24: Getting started](#)
 
--   :fontawesome-brands-markdown:{ .lg .middle } __It's just Markdown__
+
+ -   :material-wrench-check:{ .lg .middle } __Everything You Would Expect__
 
     ---
 
-    Focus on your content and generate a responsive and searchable static site
+    A rich set of features and tools, low memory footprint, minimal dependencies
 
-    [:octicons-arrow-right-24: Reference](#)
+    [:octicons-arrow-right-24: Features](#features)
 
--   :material-format-font:{ .lg .middle } __Made to measure__
+-   :fontawesome-brands-get-pocket:{ .lg .middle } __A Long History__
 
     ---
 
-    Change the colors, fonts, language, icons, logo and more with a few lines
+    Trusted by ATLAS for 20 years, GeoModel is now trusted by other experiments too
 
-    [:octicons-arrow-right-24: Customization](#)
+    [:octicons-arrow-right-24: About](#)
 
 -   :material-scale-balance:{ .lg .middle } __Open Source, Apache 2.0__
 
     ---
 
-    Material for MkDocs is licensed under Apache 2.0 and available on [GitLab](https://gitlab.cern.ch/GeoModelDev/GeoModel)
+    GeoModel is licensed under Apache 2.0 and available on [GitLab](https://gitlab.cern.ch/GeoModelDev/GeoModel)
 
     [:octicons-arrow-right-24: License](#)
 
@@ -109,16 +110,15 @@ A standalone **mass calculator tool**, to quickly compute the masses of your det
 A standalone tool to **generate geantino maps** of your newly built detector
 
 
+### Minimal Dependencies
 
-----
-
-## External Dependencies
+The GeoModel Toolkit introduces only **minimal** and **lightweight** external dependencies, and **only when you need them**.
 
-The GeoModel Toolkit offers C++ classes that provide geometrical primitives for describing detector geometry (e.g., shapes, logical/physical volumes, transformations), as well as a set of tools for writing, accessing, handling, manipulating, dumping, restoring, visualizing, inspecting, and debugging detector geometries.
+Only a single mandatory external dependency:
 
 - The [Eigen](https://eigen.tuxfamily.org) math library for the core packages
 
-Additional external dependencies:
+Additional external dependencies, only when you need them:
 
 - The lighweight [SQLite](https://www.sqlite.org/) file-based database for I/O, when the `I/O` module is used
 - The [`nlohmann_json`](https://github.com/nlohmann/json) JSON parser library to import external data, when the `Visualization` and `Tools` modules are used