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/flattie/dist/index.min.js

@@ -0,0 +1 @@
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t(e.flattie={})}(this,(function(e){e.flattie=function(e,t,f){var n={};return"object"==typeof e&&function e(t,f,n,o,i){var r,l=i?i+n:i;if(null==o)f&&(t[i]=o);else if("object"!=typeof o)t[i]=o;else if(Array.isArray(o))for(r=0;r<o.length;r++)e(t,f,n,o[r],l+r);else for(r in o)e(t,f,n,o[r],l+r)}(n,!!f,t||".",e,""),n}}));