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/diff/libesm/index.js

@@ -0,0 +1,30 @@
+/* See LICENSE file for terms of use */
+/*
+ * Text diff implementation.
+ *
+ * This library supports the following APIs:
+ * Diff.diffChars: Character by character diff
+ * Diff.diffWords: Word (as defined by \b regex) diff which ignores whitespace
+ * Diff.diffLines: Line based diff
+ *
+ * Diff.diffCss: Diff targeted at CSS content
+ *
+ * These methods are based on the implementation proposed in
+ * "An O(ND) Difference Algorithm and its Variations" (Myers, 1986).
+ * http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.4.6927
+ */
+import Diff from './diff/base.js';
+import { diffChars, characterDiff } from './diff/character.js';
+import { diffWords, diffWordsWithSpace, wordDiff, wordsWithSpaceDiff } from './diff/word.js';
+import { diffLines, diffTrimmedLines, lineDiff } from './diff/line.js';
+import { diffSentences, sentenceDiff } from './diff/sentence.js';
+import { diffCss, cssDiff } from './diff/css.js';
+import { diffJson, canonicalize, jsonDiff } from './diff/json.js';
+import { diffArrays, arrayDiff } from './diff/array.js';
+import { applyPatch, applyPatches } from './patch/apply.js';
+import { parsePatch } from './patch/parse.js';
+import { reversePatch } from './patch/reverse.js';
+import { structuredPatch, createTwoFilesPatch, createPatch, formatPatch, INCLUDE_HEADERS, FILE_HEADERS_ONLY, OMIT_HEADERS } from './patch/create.js';
+import { convertChangesToDMP } from './convert/dmp.js';
+import { convertChangesToXML } from './convert/xml.js';
+export { Diff, diffChars, characterDiff, diffWords, wordDiff, diffWordsWithSpace, wordsWithSpaceDiff, diffLines, lineDiff, diffTrimmedLines, diffSentences, sentenceDiff, diffCss, cssDiff, diffJson, jsonDiff, diffArrays, arrayDiff, structuredPatch, createTwoFilesPatch, createPatch, formatPatch, INCLUDE_HEADERS, FILE_HEADERS_ONLY, OMIT_HEADERS, applyPatch, applyPatches, parsePatch, reversePatch, convertChangesToDMP, convertChangesToXML, canonicalize };