[TASK] Introduce cards on startpage (#4947)

* [TASK] Introduce cards on startpage

resolves: #4926
releases: main, 13.4, 12.4

* Apply suggestions from code review

Co-authored-by: Sandra Erbel <[email protected]>

* Apply suggestions from code review

* Update Documentation/Index.rst

Co-authored-by: Sandra Erbel <[email protected]>

---------

Co-authored-by: Sandra Erbel <[email protected]>

Documentation/ApiOverview/Index.rst

@@ -1,5 +1,7 @@
 .. include:: /Includes.rst.txt
 
+..  _api:
+
 =======
 API A-Z
 =======
@@ -15,8 +17,8 @@ This chapter describes the most important elements of the API.
 
 **Contents:**
 
-.. toctree::
-   :titlesonly:
-   :glob:
+..  toctree::
+    :titlesonly:
+    :glob:
 
-   */Index
+    */Index

Documentation/Configuration/TypoScript/Index.rst

@@ -1,10 +1,10 @@
-.. include:: /Includes.rst.txt
-.. index:: TypoScript; Syntax
-.. _typoscript-syntax-start:
-.. _typoscript-syntax-next-steps:
-.. _typoscript-syntax-about:
-.. _typoscript-syntax-syntax:
-
+..  include:: /Includes.rst.txt
+..  index:: TypoScript; Syntax
+..  _typoscript-syntax-start:
+..  _typoscript-syntax-next-steps:
+..  _typoscript-syntax-about:
+..  _typoscript-syntax-syntax:
+..  _typoscript:
 
 ==========
 TypoScript

Documentation/Index.rst

@@ -1,57 +1,70 @@
-.. include:: /Includes.rst.txt
+..  include:: /Includes.rst.txt
 
-.. _start:
-.. _api-overview:
+..  _start:
+..  _api-overview:
 
 ===============
 TYPO3 Explained
 ===============
 
-:Version:
-   |release|
+..  card-grid::
+    :columns: 1
+    :columns-md: 2
+    :gap: 4
+    :class: pb-4
+    :card-height: 100
 
-:Language:
-   en
+    ..  card:: :ref:`API A-Z <api>`
 
-:Author:
-   TYPO3 contributors
+        This chapter describes the core functionality of TYPO3 including API and framework configuration.
 
-:License:
-   This document is published under the
-   `Open Publication License <https://www.opencontent.org/openpub/>`__.
+    ..  card:: :ref:`Administrations <administration>`
 
-:Rendered:
-   |today|
+        Including :ref:`Installations <installation>`, :ref:`Upgrades and updates <upgrading>`,
+        :ref:`Troubleshooting for administrators <troubleshooting-index>`, and
+        :ref:`Backend User Management <user-management>`
 
-----
+    ..  card:: :ref:`Configuration <configuration>`
 
-This official TYPO3 documentation is *the* main document about the enterprise content
-management system TYPO3.
+        Including :ref:`typo3ConfVars`, :ref:`typoscript`, the :ref:`config-module`,
+        and :ref:`feature-toggles`
 
-----
+    ..  card:: :ref:`Coding guidelines <cgl>`
 
-**Table of Contents:**
+        This chapter contains a description of the formal requirements or standards
+        regarding coding that you should adhere to when you develop TYPO3
+        extensions or Core parts.
 
-..  toctree::
-    :maxdepth: 1
+    ..  card:: :ref:`Extension development <extension-development>`
 
-    Introduction/Index
+        Learn how to write site packages and other custom extension with or
+        without Extbase.
+
+    ..  card:: :ref:`Security guidelines <security>`
+
+        This chapter describes some typical risks and advises how to protect a
+        TYPO3 site in order to ensure it is and stays secure and stable.
+
+    ..  card:: :ref:`Automated testing <testing>`
+
+        This chapter goes into details about automatic testing: Writing,
+        maintaining and running them in various scopes.
 
 ..  toctree::
     :maxdepth: 1
+    :hidden:
 
+    Introduction/Index
     ApiOverview/Index
     Administration/Index
-    CodingGuidelines/Index
     Configuration/Index
+    CodingGuidelines/Index
     ExtensionArchitecture/Index
     Security/Index
     Testing/Index
 
-.. Meta Menu
-
-.. toctree::
-   :hidden:
+..  toctree::
+    :hidden:
 
-   About
-   Sitemap
+    About
+    Sitemap