fix: update layout and import Chirpy template files

_includes/mermaid.html

@@ -0,0 +1,62 @@
+<!-- mermaid-js loader -->
+<script type="text/javascript">
+  function updateMermaid(event) {
+    if (event.source === window && event.data && event.data.direction === ModeToggle.ID) {
+      const mode = event.data.message;
+
+      if (typeof mermaid === 'undefined') {
+        return;
+      }
+
+      let expectedTheme = mode === ModeToggle.DARK_MODE ? 'dark' : 'default';
+      let config = { theme: expectedTheme };
+
+      {%- comment -%}
+        Re-render the SVG › <https://github.com/mermaid-js/mermaid/issues/311#issuecomment-332557344>
+      {%- endcomment -%}
+      const mermaidList = document.getElementsByClassName('mermaid');
+
+      [...mermaidList].forEach((elem) => {
+        const svgCode = elem.previousSibling.children.item(0).innerHTML;
+        elem.innerHTML = svgCode;
+        elem.removeAttribute('data-processed');
+      });
+
+      mermaid.initialize(config);
+      mermaid.init(undefined, '.mermaid');
+    }
+  }
+
+  (function () {
+    let initTheme = 'default';
+    const html = document.documentElement;
+
+    if (
+      (html.hasAttribute('data-mode') && html.getAttribute('data-mode') === 'dark') ||
+      (!html.hasAttribute('data-mode') && window.matchMedia('(prefers-color-scheme: dark)').matches)
+    ) {
+      initTheme = 'dark';
+    }
+
+    let mermaidConf = {
+      theme: initTheme {%- comment -%}  <default | dark | forest | neutral> {%- endcomment -%}
+    };
+
+    {%- comment -%} Create mermaid tag {%- endcomment -%}
+    const basicList = document.getElementsByClassName('language-mermaid');
+    [...basicList].forEach((elem) => {
+      const svgCode = elem.textContent;
+      const backup = elem.parentElement;
+      backup.classList.add('d-none');
+      {%- comment -%} create mermaid node {%- endcomment -%}
+      let mermaid = document.createElement('pre');
+      mermaid.classList.add('mermaid');
+      const text = document.createTextNode(svgCode);
+      mermaid.appendChild(text);
+      backup.after(mermaid);
+    });
+
+    mermaid.initialize(mermaidConf);
+    window.addEventListener('message', updateMermaid);
+  })();
+</script>