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/aria-query/lib/etc/roles/dpub/docBacklinkRole.js

@@ -0,0 +1,30 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.default = void 0;
+var docBacklinkRole = {
+  abstract: false,
+  accessibleNameRequired: true,
+  baseConcepts: [],
+  childrenPresentational: false,
+  nameFrom: ['author', 'contents'],
+  prohibitedProps: [],
+  props: {
+    'aria-errormessage': null,
+    'aria-invalid': null
+  },
+  relatedConcepts: [{
+    concept: {
+      name: 'referrer [EPUB-SSV]'
+    },
+    module: 'EPUB'
+  }],
+  requireContextRole: [],
+  requiredContextRole: [],
+  requiredOwnedElements: [],
+  requiredProps: {},
+  superClass: [['roletype', 'widget', 'command', 'link']]
+};
+var _default = exports.default = docBacklinkRole;