Move to custom SSG instead of eleventy.

docs/renderer/nodes/Button.njk

@@ -0,0 +1,14 @@
+{% set commonClasses = "px-6 py-2 md:px-12 md:py-3 text-white rounded-md w-auto whitespace-nowrap not-prose" %}
+{% macro render(node) %}
+  <a
+    href="{{ node.href }}"
+    target="{{ node.target }}"
+    {% if node.variant == "primary" %}
+      class="{{ node.class }} {{ commonClasses }} bg-gradient-to-b from-primary-500 to-primary-600 hover:from-primary-400 hover:to-primary-600 active:from-primary-600 active:to-primary-500"
+    {% elseif node.variant == 'neutral' %}
+      class="{{ node.class }} {{ commonClasses }} bg-gradient-to-b from-neutral-500 to-neutral-800"
+    {% endif %}
+  >
+    {{ node.text | safe }}
+  </a>
+{% endmacro %}