Create CET-6 90-day check-in site

app/layout.tsx

@@ -0,0 +1,23 @@
+import type { Metadata } from "next";
+import "./globals.css";
+
+export const metadata: Metadata = {
+  title: "大学英语六级 · 90天打卡",
+  description: "2026 CET-6 90 天复习计划与每日云端打卡。",
+  icons: {
+    icon: "/favicon.svg",
+    shortcut: "/favicon.svg",
+  },
+};
+
+export default function RootLayout({
+  children,
+}: Readonly<{
+  children: React.ReactNode;
+}>) {
+  return (
+    <html lang="zh-CN">
+      <body className="antialiased">{children}</body>
+    </html>
+  );
+}