wip: update content for CTA

flake.nix

@@ -0,0 +1,40 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+  outputs = {
+    self,
+    nixpkgs,
+    flake-utils,
+  }:
+    flake-utils.lib.eachDefaultSystem
+    (
+      system: let
+        pkgs = import nixpkgs {
+          inherit system;
+        };
+      in
+        with pkgs; {
+          devShells.default = mkShell {
+            buildInputs = [
+              pkgs.nodejs_22
+              (pkgs.python3.withPackages (ps:
+                with ps; [
+                  jupyter-server
+                  ipykernel
+                  # Computation modules
+                  jupytext
+                  altair
+                  matplotlib
+                  vega-datasets
+                  numpy
+                ]))
+              pkgs.texliveMedium
+              pkgs.libwebp
+              pkgs.imagemagick
+            ];
+          };
+        }
+    );
+}

main.md

@@ -1,20 +1,22 @@
 ---
 title: Welcome to CryoCloud
 subtitle:
+site:
+  hide_outline: true
+  hide_title_block: true
 ---
 
-+++ {"block": "cta" }
++++ {"block": "split-image" }
+
+Welcome
 
 ## Welcome to CryoCloud
 
 Accelerating discovery and enhancing collaboration for NASA Cryosphere communities
 
-[Contact Us](https://cryointhecloud.com/contact-us)
-
-+++ {"block": "split-image" }
-
 ![An image.](https://img1.wsimg.com/isteam/ip/c763ff7b-8175-4828-94ba-a610f6ca5b94/SealTagTeamVIceberg.png/:/rs=w:1333,h:1000,cg:true,m/cr=w:1333,h:1000)
 
+{button}`Contact Us <https://cryointhecloud.com/contact-us>`
 +++
 
 ## Access CryoCloud