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/css-tree/lib/syntax/node/Combinator.js

@@ -0,0 +1,54 @@
+import { WhiteSpace, Delim } from '../../tokenizer/index.js';
+
+const PLUSSIGN = 0x002B;        // U+002B PLUS SIGN (+)
+const SOLIDUS = 0x002F;         // U+002F SOLIDUS (/)
+const GREATERTHANSIGN = 0x003E; // U+003E GREATER-THAN SIGN (>)
+const TILDE = 0x007E;           // U+007E TILDE (~)
+
+export const name = 'Combinator';
+export const structure = {
+    name: String
+};
+
+// + | > | ~ | /deep/
+export function parse() {
+    const start = this.tokenStart;
+    let name;
+
+    switch (this.tokenType) {
+        case WhiteSpace:
+            name = ' ';
+            break;
+
+        case Delim:
+            switch (this.charCodeAt(this.tokenStart)) {
+                case GREATERTHANSIGN:
+                case PLUSSIGN:
+                case TILDE:
+                    this.next();
+                    break;
+
+                case SOLIDUS:
+                    this.next();
+                    this.eatIdent('deep');
+                    this.eatDelim(SOLIDUS);
+                    break;
+
+                default:
+                    this.error('Combinator is expected');
+            }
+
+            name = this.substrToCursor(start);
+            break;
+    }
+
+    return {
+        type: 'Combinator',
+        loc: this.getLocation(start, this.tokenStart),
+        name
+    };
+}
+
+export function generate(node) {
+    this.tokenize(node.name);
+}