Improve MineGeo exploration and mapping features

components/Brand.tsx

@@ -0,0 +1,13 @@
+import Link from "next/link";
+
+export function Brand() {
+  return (
+    <Link href="/" className="brand" aria-label="MineGeo home">
+      <span className="brand-cube">
+        <span />
+      </span>
+      Mine<span>Geo</span>
+      <sup>BETA</sup>
+    </Link>
+  );
+}