checkpoint: before i18n implementation

app/not-found.tsx

@@ -7,14 +7,30 @@ export default function NotFound() {
         <div className="text-center" style={{ padding: "120px 0" }}>
           <div className="subtitle">404</div>
           <div className="mg-top-4x-extra-small">
-            <h1>Page not found</h1>
+            <h1>这个页面现在不在 DAL Code 官网上</h1>
           </div>
           <div className="mg-top-4x-extra-small">
-            <p>The page you&apos;re looking for doesn&apos;t exist or has been moved.</p>
+            <p>它可能在模板改造过程中被移除、改名，或者链接已经更新。你可以先回到首页，或继续查看产品定位与产品文章。</p>
           </div>
           <div className="mg-top-24px">
-            <Link href="/" className="form-button w-button">
-              Back to home
+            <Link href="/" className="primary-button w-inline-block">
+              <div className="button-content">
+                <div>返回首页</div>
+                <div className="button-icon-wrapper primary">
+                  <svg xmlns="http://www.w3.org/2000/svg" width="100%" viewBox="0 0 17 17" fill="none" className="squared-icon">
+                    <path d="M6.25391 3.45312L10.7458 8.01563L6.25391 12.5781" stroke="currentColor" strokeWidth="1.5" strokeLinecap="square" />
+                  </svg>
+                  <div className="button-icon-bg" />
+                  <div className="button-icon-bg-inside" />
+                </div>
+              </div>
+            </Link>
+          </div>
+          <div className="mg-top-4x-extra-small">
+            <Link href="/about" className="tertiary-button w-inline-block">
+              <div className="button-content">
+                <div>查看产品定位</div>
+              </div>
             </Link>
           </div>
         </div>