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-definitions/lib/index.d.ts

@@ -0,0 +1,20 @@
+/**
+ * Find definitions in `tree`.
+ *
+ * Uses CommonMark precedence, which means that earlier definitions are
+ * preferred over duplicate later definitions.
+ *
+ * @param {Nodes} tree
+ *   Tree to check.
+ * @returns {GetDefinition}
+ *   Getter.
+ */
+export function definitions(tree: Nodes): GetDefinition
+export type Definition = import('mdast').Definition
+export type Nodes = import('mdast').Nodes
+/**
+ * Get a definition by identifier.
+ */
+export type GetDefinition = (
+  identifier?: string | null | undefined
+) => Definition | undefined