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/ohash/dist/crypto/node/index.d.mts

@@ -0,0 +1,10 @@
+/**
+ * Hashes a string using the SHA-256 algorithm and encodes it in Base64URL format.
+ *
+ * @param {string} data - data message to hash.
+ *
+ * @returns {string} The hash of the data.
+ */
+declare function digest(data: string): string;
+
+export { digest };

node_modules/ohash/dist/crypto/node/index.mjs

@@ -0,0 +1,5 @@
+import { createHash } from 'node:crypto';
+
+const e=globalThis.process?.getBuiltinModule?.("crypto")?.hash,r="sha256",s="base64url";function digest(t){if(e)return e(r,t,s);const o=createHash(r).update(t);return globalThis.process?.versions?.webcontainer?o.digest().toString(s):o.digest(s)}
+
+export { digest };