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/prismjs/components/prism-mizar.min.js

@@ -0,0 +1 @@
+Prism.languages.mizar={comment:/::.+/,keyword:/@proof\b|\b(?:according|aggregate|all|and|antonym|are|as|associativity|assume|asymmetry|attr|be|begin|being|by|canceled|case|cases|clusters?|coherence|commutativity|compatibility|connectedness|consider|consistency|constructors|contradiction|correctness|def|deffunc|define|definitions?|defpred|do|does|end|environ|equals|ex|exactly|existence|for|from|func|given|hence|hereby|holds|idempotence|identity|iff?|implies|involutiveness|irreflexivity|is|it|let|means|mode|non|not|notations?|now|of|or|otherwise|over|per|pred|prefix|projectivity|proof|provided|qua|reconsider|redefine|reduce|reducibility|reflexivity|registrations?|requirements|reserve|sch|schemes?|section|selector|set|sethood|st|struct|such|suppose|symmetry|synonym|take|that|the|then|theorems?|thesis|thus|to|transitivity|uniqueness|vocabular(?:ies|y)|when|where|with|wrt)\b/,parameter:{pattern:/\$(?:10|\d)/,alias:"variable"},variable:/\b\w+(?=:)/,number:/(?:\b|-)\d+\b/,operator:/\.\.\.|->|&|\.?=/,punctuation:/\(#|#\)|[,:;\[\](){}]/};