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/unist-util-stringify-position/lib/index.d.ts

@@ -0,0 +1,61 @@
+/**
+ * @typedef {import('unist').Node} Node
+ * @typedef {import('unist').Point} Point
+ * @typedef {import('unist').Position} Position
+ */
+/**
+ * @typedef NodeLike
+ * @property {string} type
+ * @property {PositionLike | null | undefined} [position]
+ *
+ * @typedef PointLike
+ * @property {number | null | undefined} [line]
+ * @property {number | null | undefined} [column]
+ * @property {number | null | undefined} [offset]
+ *
+ * @typedef PositionLike
+ * @property {PointLike | null | undefined} [start]
+ * @property {PointLike | null | undefined} [end]
+ */
+/**
+ * Serialize the positional info of a point, position (start and end points),
+ * or node.
+ *
+ * @param {Node | NodeLike | Point | PointLike | Position | PositionLike | null | undefined} [value]
+ *   Node, position, or point.
+ * @returns {string}
+ *   Pretty printed positional info of a node (`string`).
+ *
+ *   In the format of a range `ls:cs-le:ce` (when given `node` or `position`)
+ *   or a point `l:c` (when given `point`), where `l` stands for line, `c` for
+ *   column, `s` for `start`, and `e` for end.
+ *   An empty string (`''`) is returned if the given value is neither `node`,
+ *   `position`, nor `point`.
+ */
+export function stringifyPosition(
+  value?:
+    | Node
+    | NodeLike
+    | Point
+    | PointLike
+    | Position
+    | PositionLike
+    | null
+    | undefined
+): string
+export type Node = import('unist').Node
+export type Point = import('unist').Point
+export type Position = import('unist').Position
+export type NodeLike = {
+  type: string
+  position?: PositionLike | null | undefined
+}
+export type PointLike = {
+  line?: number | null | undefined
+  column?: number | null | undefined
+  offset?: number | null | undefined
+}
+export type PositionLike = {
+  start?: PointLike | null | undefined
+  end?: PointLike | null | undefined
+}