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/@astrojs/markdown-remark/dist/remark-collect-images.js

@@ -0,0 +1,38 @@
+import { isRemoteAllowed } from "@astrojs/internal-helpers/remote";
+import { definitions } from "mdast-util-definitions";
+import { visit } from "unist-util-visit";
+function remarkCollectImages(opts) {
+  const domains = opts?.domains ?? [];
+  const remotePatterns = opts?.remotePatterns ?? [];
+  return function(tree, vfile) {
+    if (typeof vfile?.path !== "string") return;
+    const definition = definitions(tree);
+    const localImagePaths = /* @__PURE__ */ new Set();
+    const remoteImagePaths = /* @__PURE__ */ new Set();
+    visit(tree, (node) => {
+      let url;
+      if (node.type === "image") {
+        url = decodeURI(node.url);
+      } else if (node.type === "imageReference") {
+        const imageDefinition = definition(node.identifier);
+        if (imageDefinition) {
+          url = decodeURI(imageDefinition.url);
+        }
+      }
+      if (!url) return;
+      if (URL.canParse(url)) {
+        if (isRemoteAllowed(url, { domains, remotePatterns })) {
+          remoteImagePaths.add(url);
+        }
+      } else if (!url.startsWith("/")) {
+        localImagePaths.add(url);
+      }
+    });
+    vfile.data.astro ??= {};
+    vfile.data.astro.localImagePaths = Array.from(localImagePaths);
+    vfile.data.astro.remoteImagePaths = Array.from(remoteImagePaths);
+  };
+}
+export {
+  remarkCollectImages
+};