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/property-information/lib/util/defined-info.js

@@ -0,0 +1,60 @@
+/**
+ * @import {Space} from 'property-information'
+ */
+
+import {Info} from './info.js'
+import * as types from './types.js'
+
+const checks = /** @type {ReadonlyArray<keyof typeof types>} */ (
+  Object.keys(types)
+)
+
+export class DefinedInfo extends Info {
+  /**
+   * @constructor
+   * @param {string} property
+   *   Property.
+   * @param {string} attribute
+   *   Attribute.
+   * @param {number | null | undefined} [mask]
+   *   Mask.
+   * @param {Space | undefined} [space]
+   *   Space.
+   * @returns
+   *   Info.
+   */
+  constructor(property, attribute, mask, space) {
+    let index = -1
+
+    super(property, attribute)
+
+    mark(this, 'space', space)
+
+    if (typeof mask === 'number') {
+      while (++index < checks.length) {
+        const check = checks[index]
+        mark(this, checks[index], (mask & types[check]) === types[check])
+      }
+    }
+  }
+}
+
+DefinedInfo.prototype.defined = true
+
+/**
+ * @template {keyof DefinedInfo} Key
+ *   Key type.
+ * @param {DefinedInfo} values
+ *   Info.
+ * @param {Key} key
+ *   Key.
+ * @param {DefinedInfo[Key]} value
+ *   Value.
+ * @returns {undefined}
+ *   Nothing.
+ */
+function mark(values, key, value) {
+  if (value) {
+    values[key] = value
+  }
+}