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-linker-script.js

@@ -0,0 +1,30 @@
+Prism.languages['linker-script'] = {
+	'comment': {
+		pattern: /(^|\s)\/\*[\s\S]*?(?:$|\*\/)/,
+		lookbehind: true,
+		greedy: true
+	},
+	'identifier': {
+		pattern: /"[^"\r\n]*"/,
+		greedy: true
+	},
+
+	'location-counter': {
+		pattern: /\B\.\B/,
+		alias: 'important'
+	},
+
+	'section': {
+		pattern: /(^|[^\w*])\.\w+\b/,
+		lookbehind: true,
+		alias: 'keyword'
+	},
+	'function': /\b[A-Z][A-Z_]*(?=\s*\()/,
+
+	'number': /\b(?:0[xX][a-fA-F0-9]+|\d+)[KM]?\b/,
+
+	'operator': />>=?|<<=?|->|\+\+|--|&&|\|\||::|[?:~]|[-+*/%&|^!=<>]=?/,
+	'punctuation': /[(){},;]/
+};
+
+Prism.languages['ld'] = Prism.languages['linker-script'];