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/@astrojs/markdown-remark/dist/load-plugins.js

@@ -0,0 +1,22 @@
+import { importPlugin as _importPlugin } from "#import-plugin";
+async function importPlugin(p) {
+  if (typeof p === "string") {
+    return await _importPlugin(p);
+  } else {
+    return p;
+  }
+}
+function loadPlugins(items) {
+  return items.map((p) => {
+    return new Promise((resolve, reject) => {
+      if (Array.isArray(p)) {
+        const [plugin, opts] = p;
+        return importPlugin(plugin).then((m) => resolve([m, opts])).catch((e) => reject(e));
+      }
+      return importPlugin(p).then((m) => resolve([m])).catch((e) => reject(e));
+    });
+  });
+}
+export {
+  loadPlugins
+};