docs: tidy up runtime landing page (#3172)

Author: bartlomieju

js/tabs.ts

@@ -79,6 +79,15 @@ for (const tabGroup of document.querySelectorAll<HTMLElement>(".deno-tabs")) {
   const storedTabId = localStorage.getItem(`deno-tab-${groupId}`);
   if (storedTabId) {
     document.dispatchEvent(new GroupSelectEvent(groupId, storedTabId));
+  } else if (groupId === "operating-systems") {
+    const ua = navigator.userAgent;
+    let detected: string | null = null;
+    if (/Mac/i.test(ua)) detected = "mac";
+    else if (/Win/i.test(ua)) detected = "windows";
+    else if (/Linux/i.test(ua)) detected = "linux";
+    if (detected) {
+      document.dispatchEvent(new GroupSelectEvent(groupId, detected));
+    }
   }
 
   const anyTabActive = Array.from(tabs).some((tab) =>

runtime/index.md

@@ -17,51 +17,49 @@ oldUrl:
 `dee-no`) is an
 [open source](https://github.com/denoland/deno/blob/main/LICENSE.md) JavaScript,
 TypeScript, and WebAssembly runtime with secure defaults and a great developer
-experience. It's built on [V8](https://v8.dev/),
-[Rust](https://www.rust-lang.org/), and [Tokio](https://tokio.rs/).
+experience.
 
 ## Why Deno?
 
-- Deno is
-  **[TypeScript-ready out of the box](/runtime/fundamentals/typescript/).** Zero
-  config or additional steps necessary.
-- Deno is **[secure by default](/runtime/fundamentals/security/).** Where other
-  runtimes give full access every script they run, Deno allows you to enforce
-  granular permissions.
-- Deno has a **robust built-in toolchain.** Unlike Node or browser JavaScript,
-  Deno includes a [standard library](/runtime/reference/std/), along with a
-  first-party [linter/formatter](/runtime/fundamentals/linting_and_formatting/),
-  [test runner](/runtime/fundamentals/testing/), and more.
-- Deno is **fully compatible with [Node and npm](/runtime/fundamentals/node/).**
-- Deno is **fast and reliable**.
-- **[Deno is open-source](https://github.com/denoland/deno).**
+- **Works with your existing [Node.js projects](/runtime/fundamentals/node/).**
+  Drop Deno into a repo with `package.json` and `node_modules` and it just runs;
+  mix `npm:` imports with native ES modules as you migrate.
+- **Modern module system.** ES modules with URL imports, [JSR](https://jsr.io)
+  for typed packages, and [workspaces](/runtime/fundamentals/workspaces/).
+- **[TypeScript-first](/runtime/fundamentals/typescript/).** Run `.ts` files
+  directly. No `tsc`, no build step, no config.
+- **[Secure by default](/runtime/fundamentals/security/).** Code runs in a
+  sandbox with no file, network, or environment access until you grant it.
+- **A full toolchain, no plumbing.** Built-in
+  [formatter](/runtime/fundamentals/linting_and_formatting/),
+  [linter](/runtime/fundamentals/linting_and_formatting/),
+  [test runner](/runtime/fundamentals/testing/), benchmarking, and
+  [a lot more](/runtime/reference/cli/). No `devDependencies` to wire up.
 
 ## Quick install
 
 Install the Deno runtime on your system using one of the terminal commands
 below:
 
 <deno-tabs group-id="operating-systems">
-<deno-tab value="mac" label="macOS" default>
+<deno-tab value="linux" label="Linux">
 
 ```sh
 curl -fsSL https://deno.land/install.sh | sh
 ```
 
 </deno-tab>
-<deno-tab value="windows" label="Windows">
-
-In Windows PowerShell:
+<deno-tab value="mac" label="macOS" default>
 
-```powershell
-irm https://deno.land/install.ps1 | iex
+```sh
+curl -fsSL https://deno.land/install.sh | sh
 ```
 
 </deno-tab>
-<deno-tab value="linux" label="Linux">
+<deno-tab value="windows" label="Windows">
 
-```sh
-curl -fsSL https://deno.land/install.sh | sh
+```shell title="pwsh"
+irm https://deno.land/install.ps1 | iex
 ```
 
 </deno-tab>
@@ -75,12 +73,13 @@ system path. You can verify the installation by running:
 deno --version
 ```
 
-## First steps
+## Next steps
 
-Deno can run JavaScript and [TypeScript](https://www.typescriptlang.org/) with
-no additional tools or configuration required, all in a secure,
-batteries-included runtime.
+With Deno installed, dive into the rest of the Getting Started guide:
 
 - [Making a Deno project](/runtime/getting_started/first_project/)
 - [Setting up your environment](/runtime/getting_started/setup_your_environment/)
-- [Using the CLI](/runtime/getting_started/command_line_interface)
+- [Using the CLI](/runtime/getting_started/command_line_interface/)
+
+For more installation options (package managers, Docker, building from source),
+see the full [installation guide](/runtime/getting_started/installation/).