docs: prepare landing for ScyllaDB docs unification

docs/index.rst

@@ -12,12 +12,9 @@
   :title: Welcome to ScyllaDB Documentation
   :image: /_static/img/mascots-2/docs.svg
   :button_icon: icon-arrow-right
-  :button_url: https://docs.scylladb.com/stable/get-started/
-  :button_text: New to ScyllaDB?
-  :button_style: bold
-  :button_icon_position: right
-  :button_icon_link:
-  :cta: Start here!
+  :search_box:
+
+  ScyllaDB is a high-performance NoSQL database optimized for speed and scalability.
 
 .. raw:: html
 
@@ -27,35 +24,45 @@
 
   <div class="topics-grid topics-grid--scrollable grid-container full">
 
+.. alert::
+  :link: https://www.scylladb.com/2024/12/18/why-were-moving-to-a-source-available-license/
+  :target: _blank
+  :link_text: Learn more about the change
+  :icon: logs
+
+   We’re updating our license & versioning policy
+
+.. raw:: html
+
   <div class="grid-x grid-margin-x hs">
 
 .. topic-box::
-  :title: ScyllaDB Cloud
-  :icon: icon-docs-cloud
-  :link: https://cloud.docs.scylladb.com
+  :title: Getting started
+  :icon: icon-rocket
+  :link: https://docs.scylladb.com/stable/get-started/
   :link_target: _self
-  :class: large-4 cloud-card
-  :anchor: ScyllaDB Cloud Documentation
+  :class: large-4 getting-started-card
+  :anchor: First Steps
 
-  Simplify application development with ScyllaDB Cloud - a fully managed database-as-a-service.
+  Start developing with ScyllaDB here, with sample models, connection instructions and more.
 
 .. topic-box::
-  :title: ScyllaDB Enterprise
-  :icon: icon-docs-enterprise
-  :link: https://enterprise.docs.scylladb.com
+  :title: ScyllaDB Cloud
+  :icon: icon-cloud
+  :link: https://cloud.docs.scylladb.com
   :link_target: _self
-  :class: large-4 enterprise-card
-  :anchor: ScyllaDB Enterprise Documentation
+  :class: large-4 cloud-card
+  :anchor: ScyllaDB Cloud Docs
 
   Deploy and manage ScyllaDB's most stable enterprise-grade database with premium features and 24/7 support.
 
 .. topic-box::
-  :title: ScyllaDB Open Source
-  :icon: icon-docs-open-source
-  :link: https://opensource.docs.scylladb.com
+  :title: ScyllaDB
+  :icon: icon-instance
+  :link: https://docs.scylladb.com/manual
   :link_target: _self
-  :class: large-4 opensource-card
-  :anchor: ScyllaDB Open Source Documentation
+  :class: large-4 self-hosted-card
+  :anchor: ScyllaDB Docs
 
   Deploy and manage your database in your environment.
 
@@ -165,4 +172,4 @@
    :hidden:
 
    get-started/index
-   versioning/index 
+   versioning/index