feat: add pager for article navigation in section

chore: minor updates

- reorg language settings
- add icons for cards and steps

chore: update about page

chore: add style to kbd

layouts/_default/single.html

@@ -1,5 +1,13 @@
 {{ define "main" }}
   <div class="mx-auto flex max-w-[90rem]">
-    <p class="p-4">Unimplemented</p>
+    <article class="typesetting-article w-full break-words flex min-h-[calc(100vh-4rem)] min-w-0 justify-center pb-8 pr-[calc(env(safe-area-inset-right)-1.5rem)]">
+      <main class="w-full min-w-0 max-w-6xl px-6 pt-4 md:px-12">
+        <div>
+          <h1>{{ .Title }}</h1>
+          {{ .Content }}
+        </div>
+        <div class="mt-16"></div>
+      </main>
+    </article>
   </div>
 {{ end }}