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/unstorage/drivers/overlay.cjs

@@ -0,0 +1,67 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _utils = require("./utils/index.cjs");
+const OVERLAY_REMOVED = "__OVERLAY_REMOVED__";
+const DRIVER_NAME = "overlay";
+module.exports = (0, _utils.defineDriver)(options => {
+  return {
+    name: DRIVER_NAME,
+    options,
+    async hasItem(key, opts) {
+      for (const layer of options.layers) {
+        if (await layer.hasItem(key, opts)) {
+          if (layer === options.layers[0] && (await options.layers[0]?.getItem(key)) === OVERLAY_REMOVED) {
+            return false;
+          }
+          return true;
+        }
+      }
+      return false;
+    },
+    async getItem(key) {
+      for (const layer of options.layers) {
+        const value = await layer.getItem(key);
+        if (value === OVERLAY_REMOVED) {
+          return null;
+        }
+        if (value !== null) {
+          return value;
+        }
+      }
+      return null;
+    },
+    // TODO: Support native meta
+    // async getMeta (key) {},
+    async setItem(key, value, opts) {
+      await options.layers[0]?.setItem?.(key, value, opts);
+    },
+    async removeItem(key, opts) {
+      await options.layers[0]?.setItem?.(key, OVERLAY_REMOVED, opts);
+    },
+    async getKeys(base, opts) {
+      const allKeys = await Promise.all(options.layers.map(async layer => {
+        const keys = await layer.getKeys(base, opts);
+        return keys.map(key => (0, _utils.normalizeKey)(key));
+      }));
+      const uniqueKeys = [...new Set(allKeys.flat())];
+      const existingKeys = await Promise.all(uniqueKeys.map(async key => {
+        if ((await options.layers[0]?.getItem(key)) === OVERLAY_REMOVED) {
+          return false;
+        }
+        return key;
+      }));
+      return existingKeys.filter(Boolean);
+    },
+    async dispose() {
+      await Promise.all(options.layers.map(async layer => {
+        if (layer.dispose) {
+          await layer.dispose();
+        }
+      }));
+    }
+  };
+});