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/tailwindcss/dist/plugin.mjs

@@ -0,0 +1 @@
+function g(i,n){return{handler:i,config:n}}g.withOptions=function(i,n=()=>({})){function t(o){return{handler:i(o),config:n(o)}}return t.__isOptionsFunction=!0,t};var u=g;export{u as default};