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/micromark-extension-gfm-footnote/lib/html.d.ts

@@ -0,0 +1,25 @@
+/**
+ * Generate the default label that GitHub uses on backreferences.
+ *
+ * @param {number} referenceIndex
+ *   Index of the definition in the order that they are first referenced,
+ *   0-indexed.
+ * @param {number} rereferenceIndex
+ *   Index of calls to the same definition, 0-indexed.
+ * @returns {string}
+ *   Default label.
+ */
+export function defaultBackLabel(referenceIndex: number, rereferenceIndex: number): string;
+/**
+ * Create an extension for `micromark` to support GFM footnotes when
+ * serializing to HTML.
+ *
+ * @param {Options | null | undefined} [options={}]
+ *   Configuration (optional).
+ * @returns {HtmlExtension}
+ *   Extension for `micromark` that can be passed in `htmlExtensions` to
+ *   support GFM footnotes when serializing to HTML.
+ */
+export function gfmFootnoteHtml(options?: Options | null | undefined): HtmlExtension;
+import type { HtmlOptions as Options } from 'micromark-extension-gfm-footnote';
+import type { HtmlExtension } from 'micromark-util-types';