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/astro/dist/assets/fonts/infra/xxhash-hasher.d.ts

@@ -0,0 +1,7 @@
+import type { Hasher } from '../definitions.js';
+export declare class XxhashHasher implements Hasher {
+    hashString: (input: string) => string;
+    private constructor();
+    static create(): Promise<XxhashHasher>;
+    hashObject(input: Record<string, any>): string;
+}