fix: update layout and import Chirpy template files

_includes/analytics/cloudflare.html

@@ -0,0 +1,7 @@
+<!-- Cloudflare Web Analytics -->
+<script
+  defer
+  src="https://static.cloudflareinsights.com/beacon.min.js"
+  data-cf-beacon='{"token": "{{ site.analytics.cloudflare.id }}"}'
+></script>
+<!-- End Cloudflare Web Analytics -->

_includes/analytics/goatcounter.html

@@ -0,0 +1,6 @@
+<!-- GoatCounter -->
+<script
+  async
+  src="https://gc.zgo.at/count.js"
+  data-goatcounter="https://{{ site.analytics.goatcounter.id }}.goatcounter.com/count"
+></script>

_includes/analytics/google.html

@@ -0,0 +1,13 @@
+<!-- Global site tag (gtag.js) - Google Analytics -->
+<script defer src="https://www.googletagmanager.com/gtag/js?id={{ site.analytics.google.id }}"></script>
+<script>
+  document.addEventListener('DOMContentLoaded', function (event) {
+    window.dataLayer = window.dataLayer || [];
+    function gtag() {
+      dataLayer.push(arguments);
+    }
+
+    gtag('js', new Date());
+    gtag('config', '{{ site.analytics.google.id }}');
+  });
+</script>

_includes/analytics/matomo.html

@@ -0,0 +1,14 @@
+<!-- Matomo -->
+<script type="text/javascript">
+  var _paq = window._paq = window._paq || [];
+  _paq.push(['trackPageView']);
+  _paq.push(['enableLinkTracking']);
+  (function() {
+    var u="//{{ site.analytics.matomo.domain }}/";
+    _paq.push(['setTrackerUrl', u+'matomo.php']);
+    _paq.push(['setSiteId', {{ site.analytics.matomo.id }}]);
+    var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+    g.type='text/javascript'; g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
+  })();
+</script>
+<!-- End Matomo Code -->

_includes/analytics/umami.html

@@ -0,0 +1,6 @@
+<!-- Umami -->
+<script
+  defer
+  src="{{ site.analytics.umami.domain }}/script.js"
+  data-website-id="{{ site.analytics.umami.id }}"
+></script>

_includes/comments.html

@@ -0,0 +1,5 @@
+<!-- The comments switcher -->
+{% if page.comments and site.comments.provider %}
+  {% capture path %}comments/{{ site.comments.provider }}.html{% endcapture %}
+  {% include {{ path }} %}
+{% endif %}

_includes/comments/disqus.html

@@ -0,0 +1,50 @@
+<!-- The Disqus lazy loading. -->
+
+<div id="disqus_thread">
+  <p class="text-center text-muted small">Comments powered by <a href="https://disqus.com/">Disqus</a>.</p>
+</div>
+
+<script type="text/javascript">
+  var disqus_config = function () {
+    this.page.url = '{{ page.url | absolute_url }}';
+    this.page.identifier = '{{ page.url }}';
+  };
+
+  {%- comment -%} Lazy loading {%- endcomment -%}
+  var disqus_observer = new IntersectionObserver(
+    function (entries) {
+      if (entries[0].isIntersecting) {
+        (function () {
+          var d = document,
+            s = d.createElement('script');
+          s.src = 'https://{{ site.comments.disqus.shortname }}.disqus.com/embed.js';
+          s.setAttribute('data-timestamp', +new Date());
+          (d.head || d.body).appendChild(s);
+        })();
+
+        disqus_observer.disconnect();
+      }
+    },
+    { threshold: [0] }
+  );
+
+  disqus_observer.observe(document.getElementById('disqus_thread'));
+
+  {%- comment -%} Auto switch theme {%- endcomment -%}
+  function reloadDisqus() {
+    if (event.source === window && event.data && event.data.direction === ModeToggle.ID) {
+      {%- comment -%} Disqus hasn't been loaded {%- endcomment -%}
+      if (typeof DISQUS === 'undefined') {
+        return;
+      }
+
+      if (document.readyState == 'complete') {
+        DISQUS.reset({ reload: true, config: disqus_config });
+      }
+    }
+  }
+
+  if (document.getElementById('mode-toggle')) {
+    window.addEventListener('message', reloadDisqus);
+  }
+</script>

_includes/comments/giscus.html

@@ -0,0 +1,71 @@
+<!-- https://giscus.app/ -->
+<script type="text/javascript">
+  (function () {
+    const origin = 'https://giscus.app';
+    const lightTheme = 'light';
+    const darkTheme = 'dark_dimmed';
+
+    let initTheme = lightTheme;
+    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 = darkTheme;
+    }
+
+    let lang = '{{ site.comments.giscus.lang | default: lang }}';
+    {%- comment -%} https://github.com/giscus/giscus/tree/main/locales {%- endcomment -%}
+    if (lang.length > 2 && !lang.startsWith('zh')) {
+      lang = lang.slice(0, 2);
+    }
+
+    let giscusAttributes = {
+      src: 'https://giscus.app/client.js',
+      'data-repo': '{{ site.comments.giscus.repo}}',
+      'data-repo-id': '{{ site.comments.giscus.repo_id }}',
+      'data-category': '{{ site.comments.giscus.category }}',
+      'data-category-id': '{{ site.comments.giscus.category_id }}',
+      'data-mapping': '{{ site.comments.giscus.mapping | default: 'pathname' }}',
+      'data-strict' : '{{ site.comments.giscus.strict | default: '0' }}',
+      'data-reactions-enabled': '{{ site.comments.giscus.reactions_enabled | default: '1' }}',
+      'data-emit-metadata': '0',
+      'data-theme': initTheme,
+      'data-input-position': '{{ site.comments.giscus.input_position | default: 'bottom' }}',
+      'data-lang': lang,
+      'data-loading': 'lazy',
+      crossorigin: 'anonymous',
+      async: ''
+    };
+
+    let giscusScript = document.createElement('script');
+    Object.entries(giscusAttributes).forEach(([key, value]) =>
+      giscusScript.setAttribute(key, value)
+    );
+    document.getElementById('tail-wrapper').appendChild(giscusScript);
+
+    addEventListener('message', (event) => {
+      if (
+        event.source === window &&
+        event.data &&
+        event.data.direction === ModeToggle.ID
+      ) {
+        {%- comment -%} global theme mode changed {%- endcomment -%}
+        const mode = event.data.message;
+        const theme = mode === ModeToggle.DARK_MODE ? darkTheme : lightTheme;
+
+        const message = {
+          setConfig: {
+            theme: theme
+          }
+        };
+
+        const giscus = document.getElementsByClassName('giscus-frame')[0].contentWindow;
+        giscus.postMessage({ giscus: message }, origin);
+      }
+    });
+  })();
+</script>

_includes/comments/utterances.html

@@ -0,0 +1,49 @@
+<!-- https://utteranc.es/ -->
+<script
+  src="https://utteranc.es/client.js"
+  repo="{{ site.comments.utterances.repo }}"
+  issue-term="{{ site.comments.utterances.issue_term }}"
+  crossorigin="anonymous"
+  async
+></script>
+
+<script type="text/javascript">
+  (function () {
+    const origin = 'https://utteranc.es';
+    const lightTheme = 'github-light';
+    const darkTheme = 'github-dark';
+    let initTheme = lightTheme;
+    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 = darkTheme;
+    }
+
+    addEventListener('message', (event) => {
+      let theme;
+
+      {%- comment -%} credit to <https://github.com/utterance/utterances/issues/170#issuecomment-594036347> {%- endcomment -%}
+      if (event.origin === origin) {
+        {%- comment -%} page initial {%- endcomment -%}
+        theme = initTheme;
+      } else if (event.source === window && event.data && event.data.direction === ModeToggle.ID) {
+        {%- comment -%} global theme mode changed {%- endcomment -%}
+        const mode = event.data.message;
+        theme = mode === ModeToggle.DARK_MODE ? darkTheme : lightTheme;
+      } else {
+        return;
+      }
+
+      const message = {
+        type: 'set-theme',
+        theme: theme
+      };
+
+      const utterances = document.getElementsByClassName('utterances-frame')[0].contentWindow;
+      utterances.postMessage(message, origin);
+    });
+  })();
+</script>

_includes/datetime.html

@@ -0,0 +1,20 @@
+<!--
+  Date format snippet
+  See: ${JS_ROOT}/utils/locale-dateime.js
+-->
+
+{% assign df_strftime = site.data.locales[include.lang].df.post.strftime | default: '%d/%m/%Y' %}
+{% assign df_dayjs = site.data.locales[include.lang].df.post.dayjs | default: 'DD/MM/YYYY' %}
+
+<time
+  {% if include.class %}
+    class="{{ include.class }}"
+  {% endif %}
+  data-ts="{{ include.date | date: '%s' }}"
+  data-df="{{ df_dayjs }}"
+  {% if include.tooltip %}
+    data-bs-toggle="tooltip" data-bs-placement="bottom"
+  {% endif %}
+>
+  {{ include.date | date: df_strftime }}
+</time>

_includes/embed/audio.html

@@ -0,0 +1,35 @@
+{% assign src = include.src | strip %}
+{% assign title = include.title | strip %}
+{% assign types = include.types | default: '' | strip | split: '|' %}
+
+{% unless src contains '://' %}
+  {%- capture src -%}
+    {% include media-url.html src=src subpath=page.media_subpath %}
+  {%- endcapture -%}
+{% endunless %}
+
+<p>
+  <audio class="embed-audio" controls>
+    {% assign extension = src | split: '.' | last %}
+    {% assign types = extension | concat: types %}
+
+    {% assign ext_size = extension | size %}
+    {% assign src_size = src | size %}
+    {% assign slice_size = src_size | minus: ext_size %}
+
+    {% assign filepath = src | slice: 0, slice_size %}
+
+    {% for type in types %}
+      {% assign src = filepath | append: type %}
+      {% assign media_item = site.data.media | find: 'extension', type %}
+      {% assign mime_type = media_item.mime_type | default: type %}
+      <source src="{{ src }}" type="audio/{{ mime_type }}">
+    {% endfor %}
+
+    Your browser does not support the audio tag. Here is a
+    <a href="{{ src | strip }}">link to the audio file</a> instead.
+  </audio>
+  {% if title %}
+    <em>{{ title }}</em>
+  {% endif %}
+</p>

_includes/embed/bilibili.html

@@ -0,0 +1,9 @@
+<iframe
+  class="embed-video"
+  loading="lazy"
+  src="https://player.bilibili.com/player.html?bvid={{ include.id }}"
+  scrolling="no"
+  frameborder="0"
+  framespacing="0"
+  allowfullscreen="true"
+></iframe>

_includes/embed/twitch.html

@@ -0,0 +1,8 @@
+<iframe
+  class="embed-video twitch"
+  loading="lazy"
+  src="https://player.twitch.tv/?video={{ include.id }}&parent={{ site.url | split: '://' | last | remove: '/' }}"
+  frameborder="0"
+  allowfullscreen="true"
+  scrolling="no"
+></iframe>

_includes/embed/video.html

@@ -0,0 +1,59 @@
+{% assign video_url = include.src %}
+{% assign title = include.title %}
+{% assign poster_url = include.poster %}
+{% assign types = include.types | default: '' | strip | split: '|' %}
+
+{% unless video_url contains '://' %}
+  {%- capture video_url -%}
+    {% include media-url.html src=video_url subpath=page.media_subpath %}
+  {%- endcapture -%}
+{% endunless %}
+
+{% if poster_url %}
+  {% unless poster_url contains '://' %}
+    {%- capture poster_url -%}
+      {% include media-url.html src=poster_url subpath=page.media_subpath %}
+    {%- endcapture -%}
+  {% endunless %}
+  {% assign poster = 'poster="' | append: poster_url | append: '"' %}
+{% endif %}
+
+{% assign attributes = 'controls' %}
+
+{% if include.autoplay %}
+  {% assign attributes = attributes | append: ' ' | append: 'autoplay' %}
+{% endif %}
+
+{% if include.loop %}
+  {% assign attributes = attributes | append: ' ' | append: 'loop' %}
+{% endif %}
+
+{% if include.muted %}
+  {% assign attributes = attributes | append: ' ' | append: 'muted' %}
+{% endif %}
+
+<p>
+  <video class="embed-video file" {{ poster }} {{ attributes }}>
+    {% assign extension = video_url | split: '.' | last %}
+    {% assign types = extension | concat: types %}
+
+    {% assign ext_size = extension | size %}
+    {% assign src_size = video_url | size %}
+    {% assign slice_size = src_size | minus: ext_size %}
+
+    {% assign filepath = video_url | slice: 0, slice_size %}
+
+    {% for type in types %}
+      {% assign src = filepath | append: type %}
+      {% assign media_item = site.data.media | find: 'extension', type %}
+      {% assign mime_type = media_item.mime_type | default: type %}
+      <source src="{{ src }}" type="video/{{ mime_type }}">
+    {% endfor %}
+
+    Your browser does not support the video tag. Here is a
+    <a href="{{ video_url | strip }}">link to the video file</a> instead.
+  </video>
+  {% if title %}
+    <em>{{ title }}</em>
+  {% endif %}
+</p>

_includes/embed/youtube.html

@@ -0,0 +1,9 @@
+<iframe
+  class="embed-video"
+  loading="lazy"
+  src="https://www.youtube.com/embed/{{ include.id }}"
+  title="YouTube video player"
+  frameborder="0"
+  allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
+  allowfullscreen
+></iframe>

_includes/favicons.html

@@ -16,4 +16,4 @@
 <meta name="application-name" content="{{ site.title }}">
 <meta name="msapplication-TileColor" content="#da532c">
 <meta name="msapplication-config" content="{{ favicon_path }}/browserconfig.xml">
-<meta name="theme-color" content="#ffffff">
+<meta name="theme-color" content="#ffffff">

_includes/footer.html

@@ -8,9 +8,15 @@
   "
 >
   <p>
-    {{ '©' }}
+    {{- '©' }}
     <time>{{ 'now' | date: '%Y' }}</time>
-    <a href="{{ site.social.links[0] }}">{{ site.social.name }}</a>.
+
+    {% if site.social.links %}
+      <a href="{{ site.social.links[0] }}">{{ site.social.name }}</a>.
+    {% else %}
+      <em class="fst-normal">{{ site.social.name }}</em>.
+    {% endif %}
+
     {% if site.data.locales[include.lang].copyright.brief %}
       <span
         data-bs-toggle="tooltip"
@@ -22,6 +28,5 @@
     {% endif %}
   </p>
 
-  <!-- Custom Link to Digital Den -->
   <p><a href="https://www.kozenetpro.com" target="_blank" rel="noopener">Kozenet Pro</a></p>
 </footer>

_includes/goatcounter.html

@@ -0,0 +1,8 @@
+<!-- GoatCounter -->
+
+<script
+  data-goatcounter="https://{{ site.goatcounter.id }}.goatcounter.com/count"
+  async
+  src="https://gc.zgo.at/count.js"
+></script>
+

_includes/google-analytics.html

@@ -0,0 +1,14 @@
+<!--
+  The GA snippet
+-->
+<!-- Global site tag (gtag.js) - Google Analytics -->
+<script defer src="https://www.googletagmanager.com/gtag/js?id={{ site.google_analytics.id }}"></script>
+<script>
+  document.addEventListener("DOMContentLoaded", function(event) {
+    window.dataLayer = window.dataLayer || [];
+    function gtag(){dataLayer.push(arguments);}
+
+    gtag('js', new Date());
+    gtag('config', '{{ site.google_analytics.id }}');
+  });
+</script>

_includes/head.html

@@ -0,0 +1,107 @@
+<head>
+  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+  <meta name="theme-color" media="(prefers-color-scheme: light)" content="#f7f7f7">
+  <meta name="theme-color" media="(prefers-color-scheme: dark)" content="#1b1b1e">
+  <meta name="apple-mobile-web-app-capable" content="yes">
+  <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
+  <meta
+    name="viewport"
+    content="width=device-width, user-scalable=no initial-scale=1, shrink-to-fit=no, viewport-fit=cover"
+  >
+
+  {%- capture seo_tags -%}
+    {% seo title=false %}
+  {%- endcapture -%}
+
+  <!-- Setup Open Graph image -->
+
+  {% if page.image %}
+    {% assign src = page.image.path | default: page.image %}
+
+    {% unless src contains '://' %}
+      {%- capture img_url -%}
+        {% include media-url.html src=src subpath=page.media_subpath absolute=true %}
+      {%- endcapture -%}
+
+      {%- capture old_url -%}{{ src | absolute_url }}{%- endcapture -%}
+      {%- capture new_url -%}{{ img_url }}{%- endcapture -%}
+
+      {% assign seo_tags = seo_tags | replace: old_url, new_url %}
+    {% endunless %}
+
+  {% elsif site.social_preview_image %}
+    {%- capture img_url -%}
+      {% include media-url.html src=site.social_preview_image absolute=true %}
+    {%- endcapture -%}
+
+    {%- capture og_image -%}
+      <meta property="og:image" content="{{ img_url }}" />
+    {%- endcapture -%}
+
+    {%- capture twitter_image -%}
+      <meta name="twitter:card" content="summary_large_image" />
+      <meta property="twitter:image" content="{{ img_url }}" />
+    {%- endcapture -%}
+
+    {% assign old_meta_clip = '<meta name="twitter:card" content="summary" />' %}
+    {% assign new_meta_clip = og_image | append: twitter_image %}
+    {% assign seo_tags = seo_tags | replace: old_meta_clip, new_meta_clip %}
+  {% endif %}
+
+  {{ seo_tags }}
+
+  <title>
+    {%- unless page.layout == 'home' -%}
+      {{ page.title | append: ' | ' }}
+    {%- endunless -%}
+    {{ site.title }}
+  </title>
+
+  {% include_cached favicons.html %}
+
+  <!-- Resource Hints -->
+  {% unless site.assets.self_host.enabled %}
+    {% for hint in site.data.origin.cors.resource_hints %}
+      {% for link in hint.links %}
+        <link rel="{{ link.rel }}" href="{{ hint.url }}" {{ link.opts | join: ' ' }}>
+      {% endfor %}
+    {% endfor %}
+  {% endunless %}
+
+  <!-- Bootstrap -->
+  {% unless jekyll.environment == 'production' %}
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css">
+  {% endunless %}
+
+  <!-- Theme style -->
+  <link rel="stylesheet" href="{{ '/assets/css/:THEME.css' | replace: ':THEME', site.theme | relative_url }}">
+
+  <!-- Web Font -->
+  <link rel="stylesheet" href="{{ site.data.origin[type].webfonts | relative_url }}">
+
+  <!-- Font Awesome Icons -->
+  <link rel="stylesheet" href="{{ site.data.origin[type].fontawesome.css | relative_url }}">
+
+  <!-- 3rd-party Dependencies -->
+
+  {% if site.toc and page.toc %}
+    <link rel="stylesheet" href="{{ site.data.origin[type].toc.css | relative_url }}">
+  {% endif %}
+
+  {% if page.layout == 'post' or page.layout == 'page' or page.layout == 'home' %}
+    <link rel="stylesheet" href="{{ site.data.origin[type]['lazy-polyfill'].css | relative_url }}">
+  {% endif %}
+
+  {% if page.layout == 'page' or page.layout == 'post' %}
+    <!-- Image Popup -->
+    <link rel="stylesheet" href="{{ site.data.origin[type].glightbox.css | relative_url }}">
+  {% endif %}
+
+  <!-- JavaScript -->
+
+  {% unless site.theme_mode %}
+    {% include mode-toggle.html %}
+  {% endunless %}
+
+  {% include metadata-hook.html %}
+</head>

_includes/img-url.html

@@ -0,0 +1,39 @@
+{%- comment -%}
+  Generate image final URL based on `site.img_cdn`, `page.img_path`
+
+  Arguments:
+    src - required, basic image path
+    img_path - optional, relative path of image
+    absolute - optional, boolean, if true, generate absolute URL
+
+  Return:
+    image URL
+{%- endcomment -%}
+
+{% assign url = include.src %}
+
+{%- if url -%}
+  {% unless url contains ':' %}
+    {%- comment -%} CND URL {%- endcomment -%}
+    {% assign prefix = site.img_cdn | default: '' %}
+
+    {%- comment -%} Add page image path prefix {%- endcomment -%}
+    {% assign url = include.img_path | default: '' | append: '/' | append: url %}
+
+    {% assign url = prefix
+      | append: '/'
+      | append: url
+      | replace: '///', '/'
+      | replace: '//', '/'
+      | replace: ':', ':/'
+    %}
+
+    {% if include.absolute %}
+      {% assign url = site.url | append: site.baseurl | append: url %}
+    {% else %}
+      {% assign url = site.baseurl | append: url %}
+    {% endif %}
+  {% endunless %}
+{%- endif -%}
+
+{{- url -}}

_includes/js-selector.html

@@ -0,0 +1,106 @@
+<!-- JS selector for site. -->
+
+<!-- commons -->
+
+{% assign urls = site.data.origin[type].search.js %}
+
+<!-- layout specified -->
+
+{% if page.layout == 'post' or page.layout == 'page' or page.layout == 'home' %}
+  {% assign urls = urls | append: ',' | append: site.data.origin[type]['lazy-polyfill'].js %}
+
+  {% unless page.layout == 'home' %}
+    <!-- image lazy-loading & popup & clipboard -->
+    {% assign urls = urls
+      | append: ','
+      | append: site.data.origin[type].glightbox.js
+      | append: ','
+      | append: site.data.origin[type].clipboard.js
+    %}
+  {% endunless %}
+{% endif %}
+
+{% if page.layout == 'home'
+  or page.layout == 'post'
+  or page.layout == 'archives'
+  or page.layout == 'category'
+  or page.layout == 'tag'
+%}
+  {% assign locale = include.lang | split: '-' | first %}
+
+  {% assign urls = urls
+    | append: ','
+    | append: site.data.origin[type].dayjs.js.common
+    | append: ','
+    | append: site.data.origin[type].dayjs.js.locale
+    | replace: ':LOCALE', locale
+    | append: ','
+    | append: site.data.origin[type].dayjs.js.relativeTime
+    | append: ','
+    | append: site.data.origin[type].dayjs.js.localizedFormat
+  %}
+{% endif %}
+
+{% if page.content contains '<h2' or page.content contains '<h3' and site.toc and page.toc %}
+  {% assign urls = urls | append: ',' | append: site.data.origin[type].toc.js %}
+{% endif %}
+
+{% if page.mermaid %}
+  {% assign urls = urls | append: ',' | append: site.data.origin[type].mermaid.js %}
+{% endif %}
+
+{% include jsdelivr-combine.html urls=urls %}
+
+{% case page.layout %}
+  {% when 'home', 'categories', 'post', 'page' %}
+    {% assign js = page.layout %}
+  {% when 'archives', 'category', 'tag' %}
+    {% assign js = 'misc' %}
+  {% else %}
+    {% assign js = 'commons' %}
+{% endcase %}
+
+{% capture script %}/assets/js/dist/{{ js }}.min.js{% endcapture %}
+
+<script src="{{ script | relative_url }}"></script>
+
+{% if page.math %}
+  <!-- MathJax -->
+  <script src="{{ '/assets/js/data/mathjax.js' | relative_url }}"></script>
+  <script src="https://cdnjs.cloudflare.com/polyfill/v3/polyfill.min.js?features=es6"></script>
+  <script id="MathJax-script" async src="{{ site.data.origin[type].mathjax.js | relative_url }}"></script>
+{% endif %}
+
+<!-- Pageviews -->
+{% if page.layout == 'post' %}
+  {% assign provider = site.pageviews.provider %}
+
+  {% if provider and provider != empty %}
+    {% case provider %}
+      {% when 'goatcounter' %}
+        {% if site.analytics[provider].id != empty and site.analytics[provider].id %}
+          {% include pageviews/{{ provider }}.html %}
+        {% endif %}
+    {% endcase %}
+  {% endif %}
+{% endif %}
+
+{% if page.mermaid %}
+  {% include mermaid.html %}
+{% endif %}
+
+{% if jekyll.environment == 'production' %}
+  <!-- PWA -->
+  {% if site.pwa.enabled %}
+    <script defer src="{{ 'app.min.js' | relative_url }}"></script>
+  {% endif %}
+
+  <!-- Web Analytics -->
+  {% for analytics in site.analytics %}
+    {% capture str %}{{ analytics }}{% endcapture %}
+    {% assign type = str | split: '{' | first %}
+    {% if site.analytics[type].id and site.analytics[type].id != empty %}
+      {% include analytics/{{ type }}.html %}
+    {% endif %}
+  {% endfor %}
+{% endif %}

_includes/jsdelivr-combine.html

@@ -0,0 +1,26 @@
+{% assign urls = include.urls | split: ',' %}
+
+{% assign combined_urls = nil %}
+
+{% assign domain = 'https://cdn.jsdelivr.net/' %}
+
+{% for url in urls %}
+  {% if url contains domain %}
+    {% assign url_snippet = url | slice: domain.size, url.size %}
+
+    {% if combined_urls %}
+      {% assign combined_urls = combined_urls | append: ',' | append: url_snippet %}
+    {% else %}
+      {% assign combined_urls = domain | append: 'combine/' | append: url_snippet %}
+    {% endif %}
+
+  {% elsif url contains '//' %}
+    <script src="{{ url }}"></script>
+  {% else %}
+    <script src="{{ url | relative_url }}"></script>
+  {% endif %}
+{% endfor %}
+
+{% if combined_urls %}
+  <script src="{{ combined_urls }}"></script>
+{% endif %}

_includes/lang.html

@@ -0,0 +1,10 @@
+{% comment %}
+  Detect appearance language and return it through variable "lang"
+{% endcomment %}
+{% if site.data.locales[page.lang] %}
+  {% assign lang = page.lang %}
+{% elsif site.data.locales[site.lang] %}
+  {% assign lang = site.lang %}
+{% else %}
+  {% assign lang = 'en' %}
+{% endif %}

_includes/language-alias.html

@@ -0,0 +1,70 @@
+{% comment %}
+
+  Convert the alias of the syntax language to the official name
+
+  See: <https://github.com/rouge-ruby/rouge/wiki/List-of-supported-languages-and-lexers>
+
+{% endcomment %}
+
+{% assign _lang = include.language | default: '' %}
+
+{% case _lang %}
+  {% when 'actionscript', 'as', 'as3' %}
+    {{ 'ActionScript' }}
+  {% when 'applescript' %}
+    {{ 'AppleScript' }}
+  {% when 'brightscript', 'bs', 'brs' %}
+    {{ 'BrightScript' }}
+  {% when 'cfscript', 'cfc' %}
+    {{ 'CFScript' }}
+  {% when 'coffeescript', 'coffee', 'coffee-script' %}
+    {{ 'CoffeeScript' }}
+  {% when 'cs', 'csharp' %}
+   {{ 'C#' }}
+  {% when 'erl' %}
+    {{ 'Erlang' }}
+  {% when 'graphql' %}
+   {{ 'GraphQL' }}
+  {% when 'haskell', 'hs' %}
+   {{ 'Haskell' }}
+  {% when 'javascript', 'js' %}
+    {{ 'JavaScript' }}
+  {% when 'make', 'mf', 'gnumake', 'bsdmake' %}
+    {{ 'Makefile' }}
+  {% when 'md', 'mkd' %}
+    {{ 'Markdown' }}
+  {% when 'm' %}
+    {{ 'Matlab' }}
+  {% when 'objective_c', 'objc', 'obj-c', 'obj_c', 'objectivec' %}
+    {{ 'Objective-C' }}
+  {% when 'perl', 'pl' %}
+    {{ 'Perl' }}
+  {% when 'php','php3','php4','php5' %}
+    {{ 'PHP' }}
+  {% when 'py' %}
+    {{ 'Python' }}
+  {% when 'rb' %}
+    {{ 'Ruby' }}
+  {% when 'rs','no_run','ignore','should_panic' %}
+    {{ 'Rust' }}
+  {% when 'bash', 'zsh', 'ksh', 'sh' %}
+    {{ 'Shell' }}
+  {% when 'st', 'squeak' %}
+    {{ 'Smalltalk' }}
+  {% when 'tex'%}
+    {{ 'TeX' }}
+  {% when 'latex' %}
+    {{ 'LaTex' }}
+  {% when 'ts', 'typescript' %}
+    {{ 'TypeScript' }}
+  {% when 'vb', 'visualbasic' %}
+    {{ 'Visual Basic' }}
+  {% when 'vue', 'vuejs' %}
+    {{ 'Vue.js' }}
+  {% when 'yml' %}
+    {{ 'YAML' }}
+  {% when 'css', 'html', 'scss', 'ssh', 'toml', 'xml', 'yaml', 'json' %}
+    {{ _lang | upcase }}
+  {% else %}
+    {{ _lang | capitalize }}
+{% endcase %}

_includes/media-url.html

@@ -0,0 +1,37 @@
+{%- comment -%}
+  Generate media resource final URL based on `site.cdn`, `page.media_subpath`
+
+  Arguments:
+    src - required, basic media resources path
+    subpath - optional, relative path of media resources
+    absolute - optional, boolean, if true, generate absolute URL
+
+  Return:
+    media resources URL
+{%- endcomment -%}
+
+{% assign url = include.src %}
+
+{%- if url -%}
+  {% unless url contains ':' %}
+    {%- comment -%} Add media resources subpath prefix {%- endcomment -%}
+    {% assign url = include.subpath | default: '' | append: '/' | append: url %}
+
+    {%- comment -%} Prepend CND URL {%- endcomment -%}
+    {% if site.cdn %}
+      {% assign url = site.cdn | append: '/' | append: url %}
+    {% endif %}
+
+    {% assign url = url | replace: '///', '/' | replace: '//', '/' | replace: ':/', '://' %}
+
+    {% unless url contains '://' %}
+      {% if include.absolute %}
+        {% assign url = site.url | append: site.baseurl | append: url %}
+      {% else %}
+        {% assign url = site.baseurl | append: url %}
+      {% endif %}
+    {% endunless %}
+  {% endunless %}
+{%- endif -%}
+
+{{- url -}}

_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>

_includes/metadata-hook.html

@@ -0,0 +1 @@
+<!-- A placeholder to allow defining custom metadata -->

_includes/mode-toggle.html

@@ -0,0 +1,116 @@
+<!-- Switch the mode between dark and light. -->
+
+<script type="text/javascript">
+  class ModeToggle {
+    static get MODE_KEY() {
+      return 'mode';
+    }
+    static get MODE_ATTR() {
+      return 'data-mode';
+    }
+    static get DARK_MODE() {
+      return 'dark';
+    }
+    static get LIGHT_MODE() {
+      return 'light';
+    }
+    static get ID() {
+      return 'mode-toggle';
+    }
+
+    constructor() {
+      let self = this;
+
+      {%- comment -%} always follow the system prefers {%- endcomment -%}
+      this.sysDarkPrefers.addEventListener('change', () => {
+        if (self.hasMode) {
+          self.clearMode();
+        }
+        self.notify();
+      });
+
+      if (!this.hasMode) {
+        return;
+      }
+
+      if (this.isDarkMode) {
+        this.setDark();
+      } else {
+        this.setLight();
+      }
+    }
+
+    get sysDarkPrefers() {
+      return window.matchMedia('(prefers-color-scheme: dark)');
+    }
+
+    get isPreferDark() {
+      return this.sysDarkPrefers.matches;
+    }
+
+    get isDarkMode() {
+      return this.mode === ModeToggle.DARK_MODE;
+    }
+
+    get hasMode() {
+      return this.mode != null;
+    }
+
+    get mode() {
+      return sessionStorage.getItem(ModeToggle.MODE_KEY);
+    }
+
+    {%- comment -%} get the current mode on screen {%- endcomment -%}
+    get modeStatus() {
+      if (this.hasMode) {
+        return this.mode;
+      } else {
+        return this.isPreferDark ? ModeToggle.DARK_MODE : ModeToggle.LIGHT_MODE;
+      }
+    }
+
+    setDark() {
+      document.documentElement.setAttribute(ModeToggle.MODE_ATTR, ModeToggle.DARK_MODE);
+      sessionStorage.setItem(ModeToggle.MODE_KEY, ModeToggle.DARK_MODE);
+    }
+
+    setLight() {
+      document.documentElement.setAttribute(ModeToggle.MODE_ATTR, ModeToggle.LIGHT_MODE);
+      sessionStorage.setItem(ModeToggle.MODE_KEY, ModeToggle.LIGHT_MODE);
+    }
+
+    clearMode() {
+      document.documentElement.removeAttribute(ModeToggle.MODE_ATTR);
+      sessionStorage.removeItem(ModeToggle.MODE_KEY);
+    }
+
+    {%- comment -%}
+      Notify another plugins that the theme mode has changed
+    {%- endcomment -%}
+    notify() {
+      window.postMessage(
+        {
+          direction: ModeToggle.ID,
+          message: this.modeStatus
+        },
+        '*'
+      );
+    }
+
+    flipMode() {
+      if (this.hasMode) {
+        this.clearMode();
+      } else {
+        if (this.isPreferDark) {
+          this.setLight();
+        } else {
+          this.setDark();
+        }
+      }
+
+      this.notify();
+    }
+  }
+
+  const modeToggle = new ModeToggle();
+</script>

_includes/no-linenos.html

@@ -0,0 +1,10 @@
+{% comment %}
+  Remove the line number of the code snippet.
+{% endcomment %}
+
+{% assign content = include.content %}
+
+{% if content contains '<td class="rouge-gutter gl"><pre class="lineno">' %}
+  {% assign content = content | replace: '<td class="rouge-gutter gl"><pre class="lineno">', '<!-- <td class="rouge-gutter gl"><pre class="lineno">'%}
+  {% assign content = content | replace: '</td><td class="rouge-code">', '</td> --><td class="rouge-code">' %}
+{% endif %}

_includes/notification.html

@@ -0,0 +1,24 @@
+<aside
+  id="notification"
+  class="toast"
+  role="alert"
+  aria-live="assertive"
+  aria-atomic="true"
+  data-bs-animation="true"
+  data-bs-autohide="false"
+>
+  <div class="toast-header">
+    <button
+      type="button"
+      class="btn-close ms-auto"
+      data-bs-dismiss="toast"
+      aria-label="Close"
+    ></button>
+  </div>
+  <div class="toast-body text-center pt-0">
+    <p class="px-2 mb-3">{{ site.data.locales[include.lang].notification.update_found }}</p>
+    <button type="button" class="btn btn-primary" aria-label="Update">
+      {{ site.data.locales[include.lang].notification.update }}
+    </button>
+  </div>
+</aside>

_includes/origin-type.html

@@ -0,0 +1,13 @@
+{% comment %} Site static assets origin type {% endcomment %}
+
+{% assign type = 'cors' %}
+
+{% if site.assets.self_host.enabled %}
+  {% if site.assets.self_host.env %}
+    {% if site.assets.self_host.env == jekyll.environment %}
+      {% assign type = 'basic' %}
+    {% endif %}
+  {% else %}
+    {% assign type = 'basic' %}
+  {% endif %}
+{% endif %}

_includes/pageviews/goatcounter.html

@@ -0,0 +1,19 @@
+<!-- Display GoatCounter pageviews -->
+<script>
+  let pv = document.getElementById('pageviews');
+
+  if (pv !== null) {
+    const uri = location.pathname.replace(/\/$/, '');
+    const url = `https://{{ site.analytics.goatcounter.id }}.goatcounter.com/counter/${encodeURIComponent(uri)}.json`;
+
+    fetch(url)
+      .then((response) => response.json())
+      .then((data) => {
+        const count = data.count.replace(/\s/g, '');
+        pv.innerText = new Intl.NumberFormat().format(count);
+      })
+      .catch((error) => {
+        pv.innerText = '1';
+      });
+  }
+</script>

_includes/post-description.html

@@ -0,0 +1,16 @@
+{%- comment -%}
+  Get post description or generate it from the post content.
+{%- endcomment -%}
+
+{%- assign max_length = include.max_length | default: 200 -%}
+
+{%- capture description -%}
+{%- if post.description -%}
+  {{- post.description -}}
+{%- else -%}
+  {%- include no-linenos.html content=post.content -%}
+  {{- content | markdownify | strip_html -}}
+{%- endif -%}
+{%- endcapture -%}
+
+{{- description | strip | truncate: max_length | escape -}}

_includes/post-nav.html

@@ -0,0 +1,34 @@
+<!-- Navigation buttons at the bottom of the post. -->
+
+<nav class="post-navigation d-flex justify-content-between" aria-label="Post Navigation">
+  {% assign previous = site.data.locales[include.lang].post.button.previous %}
+  {% assign next = site.data.locales[include.lang].post.button.next %}
+
+  {% if page.previous.url %}
+    <a
+      href="{{ site.baseurl }}{{ page.previous.url }}"
+      class="btn btn-outline-primary"
+      aria-label="{{ previous }}"
+    >
+      <p>{{ page.previous.title }}</p>
+    </a>
+  {% else %}
+    <div class="btn btn-outline-primary disabled" aria-label="{{ previous }}">
+      <p>-</p>
+    </div>
+  {% endif %}
+
+  {% if page.next.url %}
+    <a
+      href="{{ site.baseurl }}{{page.next.url}}"
+      class="btn btn-outline-primary"
+      aria-label="{{ next }}"
+    >
+      <p>{{ page.next.title }}</p>
+    </a>
+  {% else %}
+    <div class="btn btn-outline-primary disabled" aria-label="{{ next }}">
+      <p>-</p>
+    </div>
+  {% endif %}
+</nav>

_includes/post-paginator.html

@@ -0,0 +1,91 @@
+<!-- The paginator for post list on HomgPage. -->
+
+<nav aria-label="Page Navigation">
+  <ul class="pagination align-items-center mt-4 mb-0">
+    <!-- left arrow -->
+    {% if paginator.previous_page %}
+      {% assign prev_url = paginator.previous_page_path | relative_url %}
+    {% else %}
+      {% assign prev_url = '#' %}
+    {% endif %}
+
+    <li class="page-item {% unless paginator.previous_page %}disabled{% endunless %}">
+      <a class="page-link" href="{{ prev_url }}" aria-label="previous-page">
+        <i class="fas fa-angle-left"></i>
+      </a>
+    </li>
+
+    <!-- page numbers -->
+    {% assign left_ellipsis = false %}
+    {% assign right_ellipsis = false %}
+
+    {% for i in (1..paginator.total_pages) %}
+      {% assign pre = paginator.page | minus: 1 %}
+      {% assign next = paginator.page | plus: 1 %}
+      {% assign pre_less = pre | minus: 1 %}
+      {% assign next_more = next | plus: 1 %}
+      {% assign show = false %}
+
+      {% if paginator.page == 1 %}
+        {% if i <= 3 or i == paginator.total_pages %}
+          {% assign show = true %}
+        {% endif %}
+      {% elsif paginator.page == paginator.total_pages %}
+        {% if i == 1 or i >= pre_less %}
+          {% assign show = true %}
+        {% endif %}
+      {% else %}
+        {% if i == 1 or i == paginator.total_pages %}
+          {% assign show = true %}
+        {% elsif i >= pre and i <= next %}
+          {% assign show = true %}
+        {% endif %}
+      {% endif %}
+
+      {% if show %}
+        <!-- show number -->
+        <li class="page-item {% if i == paginator.page %} active{% endif %}">
+          <a
+            class="page-link"
+            href="{% if i > 1 %}{{ site.paginate_path | replace: ':num', i | relative_url }}{% else %}{{ '/' | relative_url }}{% endif %}"
+          >
+            {{- i -}}
+          </a>
+        </li>
+      {% else %}
+        <!-- hide number -->
+        {% if i < pre and left_ellipsis == false %}
+          <li class="page-item disabled">
+            <span class="page-link">...</span>
+          </li>
+          {% assign left_ellipsis = true %}
+        {% elsif i > next and right_ellipsis == false %}
+          <li class="page-item disabled">
+            <span class="page-link">...</span>
+          </li>
+          {% assign right_ellipsis = true %}
+        {% endif %}
+      {% endif %}
+    {% endfor %}
+
+    <!-- mobile pagination -->
+    <li class="page-index align-middle">
+      <span>{{ paginator.page }}</span>
+      <span class="text-muted">/ {{ paginator.total_pages }}</span>
+    </li>
+
+    <!-- right arrow -->
+    {% if paginator.next_page_path %}
+      {% assign next_url = paginator.next_page_path | relative_url %}
+    {% else %}
+      {% assign next_url = '#' %}
+    {% endif %}
+
+    <li class="page-item {% unless paginator.next_page_path %}disabled{% endunless %}">
+      <a class="page-link" href="{{ next_url }}" aria-label="next-page">
+        <i class="fas fa-angle-right"></i>
+      </a>
+    </li>
+  </ul>
+</nav>
+<!-- .pagination -->

_includes/post-sharing.html

@@ -0,0 +1,52 @@
+<!-- Post sharing snippet -->
+
+<div class="share-wrapper d-flex align-items-center">
+  <span class="share-label text-muted">{{ site.data.locales[include.lang].post.share }}</span>
+  <span class="share-icons">
+    {% capture title %}{{ page.title }} - {{ site.title }}{% endcapture %}
+    {% assign title = title | uri_escape %}
+    {% assign url = page.url | absolute_url | url_encode %}
+
+    {% for share in site.data.share.platforms -%}
+      {%- capture tooltip -%}
+        data-bs-toggle="tooltip" data-bs-placement="top" title="{{ share.type }}" aria-label="{{ share.type }}"
+      {%- endcapture -%}
+
+      {% if share.type == 'Mastodon' %}
+        <script defer type="module" src="https://cdn.jsdelivr.net/npm/@justinribeiro/share-to-mastodon/+esm"></script>
+        <button class="btn text-start" {{ tooltip }}>
+          <share-to-mastodon
+            class="share-mastodon"
+            message="{{ title }}"
+            url="{{ url }}"
+            {%- if share.instances -%}
+              customInstanceList="{{ share.instances | jsonify | xml_escape }}"
+            {%- endif %}
+          >
+            <i class="fa-fw {{ share.icon }}"></i>
+          </share-to-mastodon>
+        </button>
+
+        {% continue %}
+      {% endif %}
+
+      {% assign link = share.link | replace: 'TITLE', title | replace: 'URL', url %}
+
+      <a href="{{ link }}" target="_blank" rel="noopener" {{ tooltip }}>
+        <i class="fa-fw {{ share.icon }}"></i>
+      </a>
+    {% endfor %}
+
+    <button
+      id="copy-link"
+      aria-label="Copy link"
+      class="btn small"
+      data-bs-toggle="tooltip"
+      data-bs-placement="top"
+      title="{{ site.data.locales[include.lang].post.button.share_link.title }}"
+      data-title-succeed="{{ site.data.locales[include.lang].post.button.share_link.succeed }}"
+    >
+      <i class="fa-fw fas fa-link pe-none fs-6"></i>
+    </button>
+  </span>
+</div>

_includes/read-time.html

@@ -0,0 +1,37 @@
+<!-- Calculate the post's reading time, and display the word count in tooltip -->
+
+{% assign words = include.content | strip_html | number_of_words: 'auto' %}
+
+<!-- words per minute -->
+
+{% assign wpm = 180 %}
+{% assign min_time = 1 %}
+
+{% assign read_time = words | divided_by: wpm %}
+
+{% unless read_time > 0 %}
+  {% assign read_time = min_time %}
+{% endunless %}
+
+{% capture read_prompt %}
+  {{- site.data.locales[include.lang].post.read_time.prompt -}}
+{% endcapture %}
+
+<!-- return element -->
+<span
+  class="readtime"
+  data-bs-toggle="tooltip"
+  data-bs-placement="bottom"
+  title="{{ words }} {{ site.data.locales[include.lang].post.words }}"
+>
+  <em>
+    {{- read_time -}}
+    {{ ' ' }}
+    {{- site.data.locales[include.lang].post.read_time.unit -}}
+  </em>
+  {%- if include.prompt -%}
+    {%- assign _prompt_words = read_prompt | number_of_words: 'auto' -%}
+    {%- unless _prompt_words > 1 -%}{{ ' ' }}{%- endunless -%}
+    {{ read_prompt }}
+  {%- endif -%}
+</span>

_includes/refactor-content.html

@@ -0,0 +1,255 @@
+<!-- Refactor the HTML structure -->
+
+{% assign _content = include.content %}
+
+<!--
+  In order to allow a wide table to scroll horizontally,
+  we suround the markdown table with `<div class="table-wrapper">` and `</div>`
+-->
+
+{% if _content contains '<table' %}
+  {% assign _content = _content
+    | replace: '<table', '<div class="table-wrapper"><table'
+    | replace: '</table>', '</table></div>'
+    | replace: '<code><div class="table-wrapper">', '<code>'
+    | replace: '</table></div></code>', '</table></code>'
+  %}
+{% endif %}
+
+<!--
+  Fixed kramdown code highlight rendering:
+  https://github.com/penibelst/jekyll-compress-html/issues/101
+  https://github.com/penibelst/jekyll-compress-html/issues/71#issuecomment-188144901
+-->
+
+{% if _content contains '<pre class="highlight">' %}
+  {% assign _content = _content
+    | replace: '<div class="highlight"><pre class="highlight"><code', '<div class="highlight"><code'
+    | replace: '</code></pre></div>', '</code></div>'
+  %}
+{% endif %}
+
+<!-- Change the icon of checkbox -->
+
+{% if _content contains '<input type="checkbox"' %}
+  {% assign _content = _content
+    | replace: '<input type="checkbox" class="task-list-item-checkbox" disabled="disabled" checked="checked" />',
+      '<i class="fas fa-check-circle fa-fw checked"></i>'
+    | replace: '<input type="checkbox" class="task-list-item-checkbox" disabled="disabled" />',
+      '<i class="far fa-circle fa-fw"></i>'
+  %}
+{% endif %}
+
+<!-- Handle images -->
+
+{% assign IMG_TAG = '<img ' %}
+
+{% if _content contains IMG_TAG %}
+  {% assign _img_content = null %}
+  {% assign _img_snippets = _content | split: IMG_TAG %}
+
+  {% for _img_snippet in _img_snippets %}
+    {% if forloop.first %}
+      {% assign _img_content = _img_snippet %}
+      {% continue %}
+    {% endif %}
+
+    {% assign _left = _img_snippet | split: '>' | first %}
+    {% assign _right = _img_snippet | remove: _left %}
+
+    {% unless _left contains 'src=' %}
+      {% continue %}
+    {% endunless %}
+
+    {% assign _left = _left | remove: ' /' | replace: ' w=', ' width=' | replace: ' h=', ' height=' %}
+    {% assign _attrs = _left | split: '" ' %}
+
+    {% assign _src = null %}
+    {% assign _lqip = null %}
+    {% assign _class = null %}
+
+    {% for _attr in _attrs %}
+      {% unless _attr contains '=' %}
+        {% continue %}
+      {% endunless %}
+
+      {% assign _pair = _attr | split: '="' %}
+      {% capture _key %}{{ _pair | first }}{% endcapture %}
+      {% capture _value %}{{ _pair | last | remove: '"' }}{% endcapture %}
+
+      {% case _key %}
+        {% when 'src' %}
+          {% assign _src = _value %}
+        {% when 'lqip' %}
+          {% assign _lqip = _value %}
+        {% when 'class' %}
+          {% assign _class = _value %}
+      {% endcase %}
+    {% endfor %}
+
+    <!-- take out classes -->
+    {% if _class %}
+      {% capture _old_class %}class="{{ _class }}"{% endcapture %}
+      {% assign _left = _left | remove: _old_class %}
+    {% endif %}
+
+    {% assign _final_src = null %}
+    {% assign _lazyload = true %}
+
+    {%- capture _img_url -%}
+      {% include media-url.html src=_src subpath=page.media_subpath %}
+    {%- endcapture -%}
+
+    {% assign _path_prefix = _img_url | remove: _src %}
+
+    {% unless _src contains '//' %}
+      {% assign _final_src = _path_prefix | append: _src %}
+      {% assign _src_alt = 'src="' | append: _path_prefix %}
+      {% assign _left = _left | replace: 'src="', _src_alt %}
+    {% endunless %}
+
+    {% if _lqip %}
+      {% assign _lazyload = false %}
+      {% assign _class = _class | append: ' blur' %}
+
+      {% unless _lqip contains 'data:' %}
+        {% assign _lqip_alt = 'lqip="' | append: _path_prefix %}
+        {% assign _left = _left | replace: 'lqip="', _lqip_alt %}
+      {% endunless %}
+
+      <!-- add image placeholder -->
+      {% assign _left = _left | replace: 'src=', 'data-src=' | replace: ' lqip=', ' data-lqip="true" src=' %}
+
+    {% else %}
+      {% assign _class = _class | append: ' shimmer' %}
+    {% endif %}
+
+    <!-- lazy-load images -->
+    {% if _lazyload %}
+      {% assign _left = _left | append: ' loading="lazy"' %}
+    {% endif %}
+
+    {% if page.layout == 'home' %}
+      <!-- create the image wrapper -->
+      {% assign _wrapper_start = '<div class="preview-img ' | append: _class | append: '">' %}
+
+      {% assign _img_content = _img_content | append: _wrapper_start %}
+      {% assign _right = _right | prepend: '></div' %}
+
+    {% else %}
+      <!-- make sure the `<img>` is wrapped by `<a>` -->
+      {% assign _parent = _right | slice: 1, 4 %}
+
+      {% if _parent == '</a>' %}
+        <!-- add class to exist <a> tag -->
+        {% assign _size = _img_content | size | minus: 1 %}
+        {% capture _class %}
+          class="img-link{% unless _lqip %} shimmer{% endunless %}"
+        {% endcapture %}
+        {% assign _img_content = _img_content | slice: 0, _size | append: _class | append: '>' %}
+
+      {% else %}
+        <!-- create the image wrapper -->
+        {% assign _wrapper_start = _final_src
+          | default: _src
+          | prepend: '<a href="'
+          | append: '" class="popup img-link '
+          | append: _class
+          | append: '">'
+        %}
+
+        {% assign _img_content = _img_content | append: _wrapper_start %}
+        {% assign _right = '></a' | append: _right %}
+      {% endif %}
+    {% endif %}
+
+    <!-- combine -->
+    {% assign _img_content = _img_content | append: IMG_TAG | append: _left | append: _right %}
+  {% endfor %}
+
+  {% if _img_content %}
+    {% assign _content = _img_content %}
+  {% endif %}
+{% endif %}
+
+<!-- Add header for code snippets -->
+
+{% if _content contains '<div class="highlight"><code>' %}
+  {% assign _code_spippets = _content | split: '<div class="highlight"><code>' %}
+  {% assign _new_content = '' %}
+
+  {% for _snippet in _code_spippets %}
+    {% if forloop.last %}
+      {% assign _new_content = _new_content | append: _snippet %}
+
+    {% else %}
+      {% assign _left = _snippet | split: '><' | last %}
+
+      {% if _left contains 'file="' %}
+        {% assign _label_text = _left | split: 'file="' | last | split: '"' | first %}
+        {% assign _label_icon = 'far fa-file-code fa-fw' %}
+      {% else %}
+        {% assign _lang = _left | split: 'language-' | last | split: ' ' | first %}
+        {% capture _label_text %}{% include language-alias.html language=_lang %}{% endcapture %}
+        {% assign _label_icon = 'fas fa-code fa-fw small' %}
+      {% endif %}
+
+      {% capture _label %}
+        <span data-label-text="{{ _label_text | strip }}"><i class="{{ _label_icon }}"></i></span>
+      {% endcapture %}
+
+      {% assign _new_content = _new_content
+        | append: _snippet
+        | append: '<div class="code-header">'
+        | append: _label
+        | append: '<button aria-label="copy" data-title-succeed="'
+        | append: site.data.locales[include.lang].post.button.copy_code.succeed
+        | append: '"><i class="far fa-clipboard"></i></button></div>'
+        | append: '<div class="highlight"><code>'
+      %}
+    {% endif %}
+  {% endfor %}
+
+  {% assign _content = _new_content %}
+{% endif %}
+
+<!-- Create heading anchors -->
+
+{% assign heading_levels = '2,3,4,5' | split: ',' %}
+{% assign _heading_content = _content %}
+
+{% for level in heading_levels %}
+  {% assign mark_start = '<h' | append: level | append: ' id="' %}
+  {% assign mark_end = '</h' | append: level | append: '>' %}
+
+  {% if _heading_content contains mark_start %}
+    {% assign _new_content = null %}
+    {% assign heading_snippets = _heading_content | split: mark_start %}
+
+    {% for snippet in heading_snippets %}
+      {% if forloop.first %}
+        {% assign _new_content = snippet %}
+        {% continue %}
+      {% endif %}
+
+      {% assign id = snippet | split: '"' | first %}
+      {% assign anchor = '<a href="#'
+        | append: id
+        | append: '" class="anchor text-muted"><i class="fas fa-hashtag"></i></a>'
+      %}
+
+      {% assign left = snippet | split: mark_end | first %}
+      {% assign right = snippet | slice: left.size, snippet.size %}
+      {% assign left = left | replace_first: '">', '"><span class="me-2">' | append: '</span>' %}
+
+      {% assign _new_content = _new_content | append: mark_start | append: left | append: anchor | append: right %}
+    {% endfor %}
+
+    {% assign _heading_content = _new_content %}
+  {% endif %}
+{% endfor %}
+
+{% assign _content = _heading_content %}
+
+<!-- return -->
+{{ _content }}

_includes/related-posts.html

@@ -0,0 +1,94 @@
+<!-- Recommend the other 3 posts according to the tags and categories of the current post. -->
+
+<!-- The total size of related posts -->
+{% assign TOTAL_SIZE = 3 %}
+
+<!-- An random integer that bigger than 0 -->
+{% assign TAG_SCORE = 1 %}
+
+<!-- Equals to TAG_SCORE / {max_categories_hierarchy} -->
+{% assign CATEGORY_SCORE = 0.5 %}
+
+{% assign SEPARATOR = ':' %}
+
+{% assign match_posts = '' | split: '' %}
+
+{% for category in page.categories %}
+  {% assign match_posts = match_posts | push: site.categories[category] | uniq %}
+{% endfor %}
+
+{% for tag in page.tags %}
+  {% assign match_posts = match_posts | push: site.tags[tag] | uniq %}
+{% endfor %}
+
+{% assign match_posts = match_posts | reverse %}
+{% assign last_index = match_posts.size | minus: 1 %}
+{% assign score_list = '' | split: '' %}
+
+{% for i in (0..last_index) %}
+  {% assign post = match_posts[i] %}
+
+  {% if post.url == page.url %}
+    {% continue %}
+  {% endif %}
+
+  {% assign score = 0 %}
+
+  {% for tag in post.tags %}
+    {% if page.tags contains tag %}
+      {% assign score = score | plus: TAG_SCORE %}
+    {% endif %}
+  {% endfor %}
+
+  {% for category in post.categories %}
+    {% if page.categories contains category %}
+      {% assign score = score | plus: CATEGORY_SCORE %}
+    {% endif %}
+  {% endfor %}
+
+  {% if score > 0 %}
+    {% capture score_item %}{{ score }}{{ SEPARATOR }}{{ i }}{% endcapture %}
+    {% assign score_list = score_list | push: score_item %}
+  {% endif %}
+{% endfor %}
+
+{% assign index_list = '' | split: '' %}
+
+{% if score_list.size > 0 %}
+  {% assign score_list = score_list | sort | reverse %}
+  {% for entry in score_list limit: TOTAL_SIZE %}
+    {% assign index = entry | split: SEPARATOR | last %}
+    {% assign index_list = index_list | push: index %}
+  {% endfor %}
+{% endif %}
+
+{% assign relate_posts = '' | split: '' %}
+
+{% for index in index_list %}
+  {% assign i = index | to_integer %}
+  {% assign relate_posts = relate_posts | push: match_posts[i] %}
+{% endfor %}
+
+{% if relate_posts.size > 0 %}
+  <aside id="related-posts" aria-labelledby="related-label">
+    <h3 class="mb-4" id="related-label">
+      {{- site.data.locales[include.lang].post.relate_posts -}}
+    </h3>
+    <nav class="row row-cols-1 row-cols-md-2 row-cols-xl-3 g-4 mb-4">
+      {% for post in relate_posts %}
+        <article class="col">
+          <a href="{{ post.url | relative_url }}" class="post-preview card h-100">
+            <div class="card-body">
+              {% include datetime.html date=post.date lang=include.lang %}
+              <h4 class="pt-0 my-2">{{ post.title }}</h4>
+              <div class="text-muted">
+                <p>{% include post-description.html %}</p>
+              </div>
+            </div>
+          </a>
+        </article>
+      {% endfor %}
+    </nav>
+  </aside>
+  <!-- #related-posts -->
+{% endif %}

_includes/search-loader.html

@@ -0,0 +1,47 @@
+<!--
+  Jekyll Simple Search loader
+  See: <https://github.com/christian-fei/Simple-Jekyll-Search>
+-->
+
+{% capture result_elem %}
+  <article class="px-1 px-sm-2 px-lg-4 px-xl-0">
+    <header>
+      <h2><a href="{url}">{title}</a></h2>
+      <div class="post-meta d-flex flex-column flex-sm-row text-muted mt-1 mb-1">
+        {categories}
+        {tags}
+      </div>
+    </header>
+    <p>{snippet}</p>
+  </article>
+{% endcapture %}
+
+{% capture not_found %}<p class="mt-5">{{ site.data.locales[include.lang].search.no_results }}</p>{% endcapture %}
+
+<script>
+  {%- comment -%} Note: dependent library will be loaded in `js-selector.html` {%- endcomment -%}
+  SimpleJekyllSearch({
+    searchInput: document.getElementById('search-input'),
+    resultsContainer: document.getElementById('search-results'),
+    json: '{{ '/assets/js/data/search.json' | relative_url }}',
+    searchResultTemplate: '{{ result_elem | strip_newlines }}',
+    noResultsText: '{{ not_found }}',
+    templateMiddleware: function(prop, value, template) {
+      if (prop === 'categories') {
+        if (value === '') {
+          return `${value}`;
+        } else {
+          return `<div class="me-sm-4"><i class="far fa-folder fa-fw"></i>${value}</div>`;
+        }
+      }
+
+      if (prop === 'tags') {
+        if (value === '') {
+          return `${value}`;
+        } else {
+          return `<div><i class="fa fa-tag fa-fw"></i>${value}</div>`;
+        }
+      }
+    }
+  });
+</script>

_includes/search-results.html

@@ -0,0 +1,10 @@
+<!-- The Search results -->
+
+<div id="search-result-wrapper" class="d-flex justify-content-center d-none">
+  <div class="col-11 content">
+    <div id="search-hints">
+      {% include_cached trending-tags.html %}
+    </div>
+    <div id="search-results" class="d-flex flex-wrap justify-content-center text-muted mt-3"></div>
+  </div>
+</div>

_includes/sidebar.html

@@ -0,0 +1,99 @@
+<!-- The Side Bar -->
+
+<aside aria-label="Sidebar" id="sidebar" class="d-flex flex-column align-items-end">
+  <header class="profile-wrapper">
+    <a href="{{ '/' | relative_url }}" id="avatar" class="rounded-circle">
+      {%- if site.avatar != empty and site.avatar -%}
+        {%- capture avatar_url -%}
+          {% include media-url.html src=site.avatar %}
+        {%- endcapture -%}
+        <img src="{{- avatar_url -}}" width="112" height="112" alt="avatar" onerror="this.style.display='none'">
+      {%- endif -%}
+    </a>
+
+    <h1 class="site-title">
+      <a href="{{ '/' | relative_url }}">{{ site.title }}</a>
+    </h1>
+    <p class="site-subtitle fst-italic mb-0">{{ site.tagline }}</p>
+  </header>
+  <!-- .profile-wrapper -->
+
+  <nav class="flex-column flex-grow-1 w-100 ps-0">
+    <ul class="nav">
+      <!-- home -->
+      <li class="nav-item{% if page.layout == 'home' %}{{ " active" }}{% endif %}">
+        <a href="{{ '/' | relative_url }}" class="nav-link">
+          <i class="fa-fw fas fa-home"></i>
+          <span>{{ site.data.locales[include.lang].tabs.home | upcase }}</span>
+        </a>
+      </li>
+      <!-- the real tabs -->
+      {% for tab in site.tabs %}
+        <li class="nav-item{% if tab.url == page.url %}{{ " active" }}{% endif %}">
+          <a href="{{ tab.url | relative_url }}" class="nav-link">
+            <i class="fa-fw {{ tab.icon }}"></i>
+            {% capture tab_name %}{{ tab.url | split: '/' }}{% endcapture %}
+
+            <span>{{ site.data.locales[include.lang].tabs.[tab_name] | default: tab.title | upcase }}</span>
+          </a>
+        </li>
+        <!-- .nav-item -->
+      {% endfor %}
+    </ul>
+  </nav>
+
+  <div class="sidebar-bottom d-flex flex-wrap  align-items-center w-100">
+    {% unless site.theme_mode %}
+      <button type="button" class="btn btn-link nav-link" aria-label="Switch Mode" id="mode-toggle">
+        <i class="fas fa-adjust"></i>
+      </button>
+
+      {% if site.data.contact.size > 0 %}
+        <span class="icon-border"></span>
+      {% endif %}
+    {% endunless %}
+
+    {% for entry in site.data.contact %}
+      {% case entry.type %}
+        {% when 'github', 'twitter' %}
+          {%- capture url -%}
+            https://{{ entry.type }}.com/{{ site[entry.type].username }}
+          {%- endcapture -%}
+        {% when 'email' %}
+          {% assign email = site.social.email | split: '@' %}
+          {%- capture url -%}
+            javascript:location.href = 'mailto:' + ['{{ email[0] }}','{{ email[1] }}'].join('@')
+          {%- endcapture -%}
+        {% when 'rss' %}
+          {% assign url = '/feed.xml' | relative_url %}
+        {% else %}
+          {% assign url = entry.url %}
+      {% endcase %}
+
+      {% if url %}
+        <a
+          href="{{ url }}"
+          aria-label="{{ entry.type }}"
+          {% assign link_types = '' %}
+
+          {% unless entry.noblank %}
+            target="_blank"
+            {% assign link_types = 'noopener noreferrer' %}
+          {% endunless %}
+
+          {% if entry.type == 'mastodon' %}
+            {% assign link_types = link_types | append: ' me' | strip %}
+          {% endif %}
+
+          {% unless link_types == empty %}
+            rel="{{ link_types }}"
+          {% endunless %}
+        >
+          <i class="{{ entry.icon }}"></i>
+        </a>
+      {% endif %}
+    {% endfor %}
+  </div>
+  <!-- .sidebar-bottom -->
+</aside>
+<!-- #sidebar -->

_includes/toc.html

@@ -0,0 +1,13 @@
+{% assign enable_toc = false %}
+{% if site.toc and page.toc %}
+  {% if page.content contains '<h2' or page.content contains '<h3' %}
+    {% assign enable_toc = true %}
+  {% endif %}
+{% endif %}
+
+{% if enable_toc %}
+  <section id="toc-wrapper" class="d-none ps-0 pe-4">
+    <h2 class="panel-heading ps-3 mb-2">{{- site.data.locales[include.lang].panel.toc -}}</h2>
+    <nav id="toc"></nav>
+  </section>
+{% endif %}

_includes/topbar.html

@@ -0,0 +1,77 @@
+<!-- The Top Bar -->
+
+<header id="topbar-wrapper" aria-label="Top Bar">
+  <div
+    id="topbar"
+    class="d-flex align-items-center justify-content-between px-lg-3 h-100"
+  >
+    <nav id="breadcrumb" aria-label="Breadcrumb">
+      {% assign paths = page.url | split: '/' %}
+
+      {% if paths.size == 0 or page.layout == 'home' %}
+        <!-- index page -->
+        <span>{{ site.data.locales[include.lang].tabs.home | capitalize }}</span>
+
+      {% else %}
+        {% for item in paths %}
+          {% if forloop.first %}
+            <span>
+              <a href="{{ '/' | relative_url }}">
+                {{- site.data.locales[include.lang].tabs.home | capitalize -}}
+              </a>
+            </span>
+
+          {% elsif forloop.last %}
+            {% if page.collection == 'tabs' %}
+              <span>{{ site.data.locales[include.lang].tabs[item] | default: page.title }}</span>
+            {% else %}
+              <span>{{ page.title }}</span>
+            {% endif %}
+
+          {% elsif page.layout == 'category' or page.layout == 'tag' %}
+            <span>
+              <a href="{{ item | append: '/' | relative_url }}">
+                {{- site.data.locales[include.lang].tabs[item] | default: page.title -}}
+              </a>
+            </span>
+          {% endif %}
+        {% endfor %}
+      {% endif %}
+    </nav>
+    <!-- endof #breadcrumb -->
+
+    <button type="button" id="sidebar-trigger" class="btn btn-link">
+      <i class="fas fa-bars fa-fw"></i>
+    </button>
+
+    <div id="topbar-title">
+      {% if page.layout == 'home' %}
+        {{- site.data.locales[include.lang].title | default: site.title -}}
+      {% elsif page.collection == 'tabs' or page.layout == 'page' %}
+        {%- capture tab_key -%}{{ page.url | split: '/' }}{%- endcapture -%}
+        {{- site.data.locales[include.lang].tabs[tab_key] | default: page.title -}}
+      {% else %}
+        {{- site.data.locales[include.lang].layout[page.layout] | default: page.layout | capitalize -}}
+      {% endif %}
+    </div>
+
+    <button type="button" id="search-trigger" class="btn btn-link">
+      <i class="fas fa-search fa-fw"></i>
+    </button>
+
+    <search id="search" class="align-items-center ms-3 ms-lg-0">
+      <i class="fas fa-search fa-fw"></i>
+      <input
+        class="form-control"
+        id="search-input"
+        type="search"
+        aria-label="search"
+        autocomplete="off"
+        placeholder="{{ site.data.locales[include.lang].search.hint | capitalize }}..."
+      >
+    </search>
+    <button type="button" class="btn btn-link text-decoration-none" id="search-cancel">
+      {{- site.data.locales[include.lang].search.cancel -}}
+    </button>
+  </div>
+</header>

_includes/trending-tags.html

@@ -0,0 +1,46 @@
+<!-- The trending tags list -->
+
+{% assign MAX = 10 %}
+
+{% assign size_list = '' | split: '' %}
+{% assign tag_list = '' | split: '' %}
+
+{% for tag in site.tags %}
+  {% assign size = tag | last | size %}
+  {% assign size_list = size_list | push: size %}
+
+  {% assign tag_str = tag | first | append: '::' | append: size %}
+  {% assign tag_list = tag_list | push: tag_str %}
+{% endfor %}
+
+{% assign size_list = size_list | sort | reverse %}
+
+{% assign tag_list = tag_list | sort_natural %}
+
+{% assign trending_tags = '' | split: '' %}
+
+{% for size in size_list limit: MAX %}
+  {% for tag_str in tag_list %}
+    {% assign tag = tag_str | split: '::' %}
+    {% assign tag_name = tag | first %}
+    {% assign tag_size = tag | last | plus: 0 %}
+    {% if tag_size == size %}
+      {% unless trending_tags contains tag_name %}
+        {% assign trending_tags = trending_tags | push: tag_name %}
+        {% break %}
+      {% endunless %}
+    {% endif %}
+  {% endfor %}
+{% endfor %}
+
+{% if trending_tags.size > 0 %}
+  <section>
+    <h2 class="panel-heading">{{- site.data.locales[include.lang].panel.trending_tags -}}</h2>
+    <div class="d-flex flex-wrap mt-3 mb-1 me-3">
+      {% for tag_name in trending_tags %}
+        {% assign url = tag_name | slugify | url_encode | prepend: '/tags/' | append: '/' %}
+        <a class="post-tag btn btn-outline-primary" href="{{ url | relative_url }}">{{ tag_name }}</a>
+      {% endfor %}
+    </div>
+  </section>
+{% endif %}

_includes/update-list.html

@@ -0,0 +1,40 @@
+<!-- Get 5 last posted/updated posts -->
+
+{% assign MAX_SIZE = 5 %}
+
+{% assign all_list = '' | split: '' %}
+
+{% for post in site.posts %}
+  {% assign datetime = post.last_modified_at | default: post.date %}
+
+  {% capture elem %}
+    {{- datetime | date: "%Y%m%d%H%M%S" -}}::{{- forloop.index0 -}}
+  {% endcapture %}
+
+  {% assign all_list = all_list | push: elem %}
+{% endfor %}
+
+{% assign all_list = all_list | sort | reverse %}
+
+{% assign update_list = '' | split: '' %}
+
+{% for entry in all_list limit: MAX_SIZE %}
+  {% assign update_list = update_list | push: entry %}
+{% endfor %}
+
+{% if update_list.size > 0 %}
+  <section id="access-lastmod">
+    <h2 class="panel-heading">{{- site.data.locales[include.lang].panel.lastmod -}}</h2>
+    <ul class="content list-unstyled ps-0 pb-1 ms-1 mt-2">
+      {% for item in update_list %}
+        {% assign index = item | split: '::' | last | plus: 0 %}
+        {% assign post = site.posts[index] %}
+        {% assign url = post.url | relative_url %}
+        <li class="text-truncate lh-lg">
+          <a href="{{ url }}">{{ post.title }}</a>
+        </li>
+      {% endfor %}
+    </ul>
+  </section>
+  <!-- #access-lastmod -->
+{% endif %}