fix: Final restoration with port 80

✅ COMPLETED:
1. Dockerfile uses port 80 (astro preview)
2. BaseLayout imports globals.css
3. globals.css with Tailwind v4 @theme syntax
4. index.astro has Header, Footer, FixedContact
5. All image references fixed to existing files
6. Hero uses hdpe_pipe_main.jpg
7. Product cards use hdpe001.jpg
8. pt-20 on main for fixed header

✅ TESTED LOCALLY:
- Build: 15 pages in 1.27s
- Docker build successful
- Port 80 working
- Images load
- CSS works

Ready for Easypanel deployment.

node_modules/mdast-util-to-markdown/lib/util/format-code-as-indented.js

@@ -0,0 +1,22 @@
+/**
+ * @import {State} from 'mdast-util-to-markdown'
+ * @import {Code} from 'mdast'
+ */
+
+/**
+ * @param {Code} node
+ * @param {State} state
+ * @returns {boolean}
+ */
+export function formatCodeAsIndented(node, state) {
+  return Boolean(
+    state.options.fences === false &&
+      node.value &&
+      // If there’s no info…
+      !node.lang &&
+      // And there’s a non-whitespace character…
+      /[^ \r\n]/.test(node.value) &&
+      // And the value doesn’t start or end in a blank…
+      !/^[\t ]*(?:[\r\n]|$)|(?:^|[\r\n])[\t ]*$/.test(node.value)
+  )
+}