updated screenshots

Author: skarim

docs/src/assets/screenshots/add-to-existing-stack.png

@@ -5,7 +5,7 @@ description: Practical guide for reviewing, merging, and managing stacked pull r
 
 This guide covers the practical day-to-day experience of working with Stacked PRs — how to review them, how merging works step by step, and how to keep things in sync from the CLI.
 
-For an introduction to what stacks are and how GitHub supports them natively, see the [Overview](/gh-stack/introduction/overview/). For a visual walkthrough of the UI, see [Stacked PRs in the GitHub UI](/gh-stack/guides/ui/).
+For an introduction to what stacks are and how it works in GitHub, see the [Overview](/gh-stack/introduction/overview/). For a visual walkthrough of the UI, see [Stacked PRs in the GitHub UI](/gh-stack/guides/ui/).
 
 ## Reviewing Stacked PRs
 

docs/src/assets/screenshots/modify-stack-tui.png

@@ -21,7 +21,7 @@ import StackDiagram from '../../components/StackDiagram.astro';
 import stackNavigator from '../../assets/screenshots/stack-navigator.png';
 
 <CardGrid>
-  <Card title="Stacked PRs, Native in GitHub" icon="github">
+  <Card title="Stacked PRs in GitHub" icon="github">
     Arrange pull requests in an ordered stack and merge them all in one click. Each PR represents one focused layer of your change, reviewed independently and landed together.
   </Card>
   <Card title="Simplified Stack Management" icon="open-book">

docs/src/assets/screenshots/newly-created-stack.png

@@ -1,6 +1,6 @@
 ---
 title: Overview
-description: What stacked pull requests are, why they matter, and how GitHub supports them natively.
+description: What stacked pull requests are and how they work in GitHub.
 ---
 
 ## Why Stacks?
@@ -34,7 +34,7 @@ Each pull request in a stack:
 
 ## GitHub Stacked PRs
 
-GitHub supports Stacked PRs natively, combining a rich pull request UI with the `gh stack` CLI to give both authors and reviewers a seamless experience.
+Stacked pull requests build on the existing pull request experience in GitHub, allowing authors to group a chain of individual PRs together as a stack. Together with the `gh stack` CLI, authors and reviewers can easily create, modify, navigate, and merge stacks.
 
 ### Stack Map in the PR UI