diff --git a/.browserslistrc b/.browserslistrc
deleted file mode 100644
index 2000ee55..00000000
--- a/.browserslistrc
+++ /dev/null
@@ -1,4 +0,0 @@
-> 0.25%
-not dead
-IE >= 11
-iOS >= 7
diff --git a/.editorconfig b/.editorconfig
deleted file mode 100644
index 576a2a94..00000000
--- a/.editorconfig
+++ /dev/null
@@ -1,19 +0,0 @@
-# editorconfig.org
-root = true
-
-[*]
-charset = utf-8
-indent_style = tab
-end_of_line = lf
-trim_trailing_whitespace = true
-insert_final_newline = true
-
-[*.md]
-trim_trailing_whitespace = false
-
-[*.{json,yaml,yml,toml,md,babelrc,eslintrc,postcssrc,stylelintrc}]
-indent_style = space
-indent_size = 2
-
-[layouts/**.{html,svg}]
-insert_final_newline = false
diff --git a/.eslintrc b/.eslintrc
deleted file mode 100644
index c091af75..00000000
--- a/.eslintrc
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  "extends": "airbnb-base/legacy",
-  "rules": {
-    "indent": [2, "tab"],
-    "no-tabs": 0,
-    "no-unused-vars": 0,
-    "no-shadow-restricted-names": 0
-  }
-}
diff --git a/.github/workflows/ci-test.yml b/.github/workflows/ci-test.yml
deleted file mode 100644
index a1fe231e..00000000
--- a/.github/workflows/ci-test.yml
+++ /dev/null
@@ -1,68 +0,0 @@
-name: Test
-
-on:
-  push:
-    branches:
-      - master
-    paths-ignore:
-      - "README.md"
-  pull_request:
-    paths-ignore:
-      - "README.md"
-
-jobs:
-  lint:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        node:
-          - '20.x'
-
-    steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
-        with:
-          node-version: ${{ matrix.node }}
-
-      - name: Install npm dependencies
-        run: npm ci
-
-      - name: Lint
-        run: npm run lint
-
-  test-hugo:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        hugo:
-          - '0.48' # min version
-          - '0.58.2' # https://github.com/gohugoio/hugoThemes/issues/682
-          - '0.59.1' # last major version without goldmark renderer
-          - '0.60.1' # first major version with goldmark renderer
-          - '0.76.5' # https://github.com/gohugoio/hugo/issues/7822
-          # - '0.80.0' # https://github.com/gohugoio/hugo/issues/8340
-          - '0.86.1' # https://github.com/gohugoio/hugo/issues/9150
-          - '0.93.3' # https://github.com/gohugoio/hugo/commit/837fdfdf45014e3d5ef3b00b01548b68a4489c5f
-          - 'latest'
-      fail-fast: true
-
-    steps:
-      - uses: actions/checkout@v3
-
-      # https://github.com/peaceiris/actions-hugo (community action)
-      - name: Run Hugo ${{ matrix.hugo }}
-        uses: peaceiris/actions-hugo@v2
-        with:
-          hugo-version: ${{ matrix.hugo }}
-          # extended: true
-
-      - name: Build with Hugo ${{ matrix.hugo }}
-        working-directory: exampleSite
-        run: |
-          function ver { printf "%03d%03d%03d" $(echo "$1" | tr '.' ' '); }
-          HUGO_VERSION=$(hugo version | grep -Eo '[0-9]+\.[0-9]+((\.[0-9]+)?)')
-          # The option changed in 0.93.0: https://github.com/gohugoio/hugo/releases/tag/v0.93.0
-          I18N_OPT=$([ $(ver $HUGO_VERSION) -lt $(ver 0.93.0) ] && echo "--i18n-warnings" || echo "--printI18nWarnings")
-          # The option deprecated in v0.114.0 (WARNs >= 0.120.0): https://github.com/gohugoio/hugo/releases/tag/v0.114.0
-          LOG_OPT=$([ $(ver $HUGO_VERSION) -lt $(ver 0.114.0) ] && echo "--verbose" || echo "--logLevel info")
-          HUGO_THEME="Mainroad" hugo --themesDir ../.. $I18N_OPT $LOG_OPT
diff --git a/.gitignore b/.gitignore
deleted file mode 100644
index d171f954..00000000
--- a/.gitignore
+++ /dev/null
@@ -1,19 +0,0 @@
-# NPM
-node_modules/
-npm-debug.log
-
-# IDE
-.idea
-*.sublime-project
-*.sublime-workspace
-.vscode/*
-
-# OS
-._*
-Thumbs.db
-.DS_Store
-.Trashes
-.Spotlight-V100
-.AppleDouble
-.LSOverride
-Desktop.ini
diff --git a/.postcssrc b/.postcssrc
deleted file mode 100644
index 7d884064..00000000
--- a/.postcssrc
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-  "plugins": {
-    "autoprefixer": {
-      cascade: false
-    }
-  }
-}
diff --git a/.stylelintrc b/.stylelintrc
deleted file mode 100644
index 433e93f9..00000000
--- a/.stylelintrc
+++ /dev/null
@@ -1,319 +0,0 @@
-{
-  "plugins": [
-    "stylelint-order"
-  ],
-  "rules": {
-    "at-rule-empty-line-before": [
-      "always",
-      {
-        "except": [
-          "blockless-after-same-name-blockless",
-          "first-nested"
-        ],
-        "ignore": [
-          "after-comment"
-        ]
-      }
-    ],
-    "at-rule-name-case": "lower",
-    "at-rule-name-space-after": "always-single-line",
-    "at-rule-semicolon-newline-after": "always",
-    "block-closing-brace-newline-after": "always",
-    "block-closing-brace-empty-line-before": "never",
-    "block-no-empty": true,
-    "block-opening-brace-newline-after": "always-multi-line",
-    "color-hex-case": "lower",
-    "color-hex-length": "short",
-    "color-no-invalid-hex": true,
-    "comment-no-empty": true,
-    "declaration-bang-space-after": "never",
-    "declaration-bang-space-before": "always",
-    "declaration-block-no-duplicate-properties": [
-      true,
-        {
-          "ignore": [
-            "consecutive-duplicates-with-different-values"
-          ]
-        }
-    ],
-    "declaration-block-no-shorthand-property-overrides": true,
-    "declaration-block-semicolon-newline-after": "always-multi-line",
-    "declaration-block-semicolon-space-after": "always-single-line",
-    "declaration-block-semicolon-space-before": "never",
-    "declaration-block-single-line-max-declarations": 1,
-    "declaration-block-trailing-semicolon": "always",
-    "declaration-colon-newline-after": "always-multi-line",
-    "declaration-colon-space-after": "always-single-line",
-    "declaration-colon-space-before": "never",
-    "font-family-no-duplicate-names": true,
-    "function-calc-no-unspaced-operator": true,
-    "function-comma-newline-after": "always-multi-line",
-    "function-comma-space-after": "always-single-line",
-    "function-comma-space-before": "never",
-    "function-linear-gradient-no-nonstandard-direction": true,
-    "function-max-empty-lines": 0,
-    "function-name-case": "lower",
-    "function-parentheses-newline-inside": "always-multi-line",
-    "function-parentheses-space-inside": "never-single-line",
-    "function-whitespace-after": "always",
-    "indentation": "tab",
-    "keyframe-declaration-no-important": true,
-    "length-zero-no-unit": true,
-    "max-empty-lines": 1,
-    "media-feature-colon-space-after": "always",
-    "media-feature-colon-space-before": "never",
-    "media-feature-name-case": "lower",
-    "media-feature-name-no-unknown": true,
-    "media-feature-parentheses-space-inside": "never",
-    "media-feature-range-operator-space-after": "always",
-    "media-feature-range-operator-space-before": "always",
-    "media-query-list-comma-newline-after": "always-multi-line",
-    "media-query-list-comma-space-after": "always-single-line",
-    "media-query-list-comma-space-before": "never",
-    "no-empty-source": true,
-    "no-eol-whitespace": true,
-    "no-extra-semicolons": true,
-    "no-invalid-double-slash-comments": true,
-    "no-missing-end-of-source-newline": true,
-    "number-no-trailing-zeros": true,
-    "property-case": "lower",
-    "property-no-unknown": true,
-    "selector-attribute-brackets-space-inside": "never",
-    "selector-attribute-operator-space-after": "never",
-    "selector-attribute-operator-space-before": "never",
-    "selector-combinator-space-after": "always",
-    "selector-combinator-space-before": "always",
-    "selector-descendant-combinator-no-non-space": true,
-    "selector-list-comma-newline-after": "always",
-    "selector-list-comma-space-before": "never",
-    "selector-pseudo-class-case": "lower",
-    "selector-pseudo-class-no-unknown": true,
-    "selector-pseudo-class-parentheses-space-inside": "never",
-    "selector-pseudo-element-case": "lower",
-    "selector-pseudo-element-colon-notation": "double",
-    "selector-pseudo-element-no-unknown": true,
-    "selector-type-case": "lower",
-    "selector-type-no-unknown": true,
-    "shorthand-property-no-redundant-values": true,
-    "string-no-newline": true,
-    "unit-case": "lower",
-    "unit-no-unknown": true,
-    "value-list-comma-newline-after": "always-multi-line",
-    "value-list-comma-space-after": "always-single-line",
-    "value-list-comma-space-before": "never",
-    "value-list-max-empty-lines": 0,
-    "order/properties-order": [
-      "position",
-      "top",
-      "right",
-      "bottom",
-      "left",
-      "z-index",
-      "box-sizing",
-      "display",
-      "flex",
-      "flex-align",
-      "flex-basis",
-      "flex-direction",
-      "flex-wrap",
-      "flex-flow",
-      "flex-shrink",
-      "flex-grow",
-      "flex-wrap",
-      "align-content",
-      "align-items",
-      "align-self",
-      "justify-content",
-      "order",
-      "float",
-      "width",
-      "min-width",
-      "max-width",
-      "height",
-      "min-height",
-      "max-height",
-      "padding",
-      "padding-top",
-      "padding-right",
-      "padding-bottom",
-      "padding-left",
-      "margin",
-      "margin-top",
-      "margin-right",
-      "margin-bottom",
-      "margin-left",
-      "overflow",
-      "overflow-x",
-      "overflow-y",
-      "-webkit-overflow-scrolling",
-      "-ms-overflow-x",
-      "-ms-overflow-y",
-      "-ms-overflow-style",
-      "columns",
-      "column-count",
-      "column-fill",
-      "column-gap",
-      "column-rule",
-      "column-rule-width",
-      "column-rule-style",
-      "column-rule-color",
-      "column-span",
-      "column-width",
-      "orphans",
-      "widows",
-      "clip",
-      "clear",
-      "font",
-      "font-family",
-      "font-size",
-      "font-style",
-      "font-weight",
-      "font-variant",
-      "font-size-adjust",
-      "font-stretch",
-      "font-effect",
-      "font-emphasize",
-      "font-emphasize-position",
-      "font-emphasize-style",
-      "font-smooth",
-      "src",
-      "hyphens",
-      "line-height",
-      "color",
-      "text-align",
-      "text-align-last",
-      "text-emphasis",
-      "text-emphasis-color",
-      "text-emphasis-style",
-      "text-emphasis-position",
-      "text-decoration",
-      "text-indent",
-      "text-justify",
-      "text-outline",
-      "-ms-text-overflow",
-      "text-overflow",
-      "text-overflow-ellipsis",
-      "text-overflow-mode",
-      "text-shadow",
-      "text-transform",
-      "text-wrap",
-      "-webkit-text-size-adjust",
-      "-ms-text-size-adjust",
-      "letter-spacing",
-      "-ms-word-break",
-      "word-break",
-      "word-spacing",
-      "-ms-word-wrap",
-      "word-wrap",
-      "overflow-wrap",
-      "tab-size",
-      "white-space",
-      "vertical-align",
-      "direction",
-      "unicode-bidi",
-      "list-style",
-      "list-style-position",
-      "list-style-type",
-      "list-style-image",
-      "pointer-events",
-      "-ms-touch-action",
-      "touch-action",
-      "cursor",
-      "visibility",
-      "zoom",
-      "table-layout",
-      "empty-cells",
-      "caption-side",
-      "border-spacing",
-      "border-collapse",
-      "content",
-      "quotes",
-      "counter-reset",
-      "counter-increment",
-      "resize",
-      "user-select",
-      "nav-index",
-      "nav-up",
-      "nav-right",
-      "nav-down",
-      "nav-left",
-      "background",
-      "background-color",
-      "background-image",
-      "filter",
-      "background-repeat",
-      "background-attachment",
-      "background-position",
-      "background-position-x",
-      "background-position-y",
-      "background-clip",
-      "background-origin",
-      "background-size",
-      "border",
-      "border-color",
-      "border-style",
-      "border-width",
-      "border-top",
-      "border-top-color",
-      "border-top-style",
-      "border-top-width",
-      "border-right",
-      "border-right-color",
-      "border-right-style",
-      "border-right-width",
-      "border-bottom",
-      "border-bottom-color",
-      "border-bottom-style",
-      "border-bottom-width",
-      "border-left",
-      "border-left-color",
-      "border-left-style",
-      "border-left-width",
-      "border-radius",
-      "border-top-left-radius",
-      "border-top-right-radius",
-      "border-bottom-right-radius",
-      "border-bottom-left-radius",
-      "border-image",
-      "border-image-source",
-      "border-image-slice",
-      "border-image-width",
-      "border-image-outset",
-      "border-image-repeat",
-      "outline",
-      "outline-width",
-      "outline-style",
-      "outline-color",
-      "outline-offset",
-      "box-shadow",
-      "opacity",
-      "-ms-interpolation-mode",
-      "page-break-after",
-      "page-break-before",
-      "page-break-inside",
-      "transition",
-      "transition-delay",
-      "transition-timing-function",
-      "transition-duration",
-      "transition-property",
-      "transform",
-      "transform-origin",
-      "perspective",
-      "appearance",
-      "animation",
-      "animation-name",
-      "animation-duration",
-      "animation-play-state",
-      "animation-timing-function",
-      "animation-delay",
-      "animation-iteration-count",
-      "animation-direction",
-      "animation-fill-mode",
-      "quotes",
-      "will-change",
-      "fill",
-      "fill-rule",
-      "stroke"
-    ]
-  }
-}
diff --git a/layouts/_default/baseof.html b/layouts/_default/baseof.html
index 919f19f9..d21b24b3 100644
--- a/layouts/_default/baseof.html
+++ b/layouts/_default/baseof.html
@@ -35,7 +35,7 @@
 	{{- end }}
 
 	<link rel="shortcut icon" href="{{ "favicon.ico" | relURL }}">
-	{{- if not .Site.IsServer }}
+	{{- if not hugo.IsServer }}
 		{{ template "_internal/google_analytics.html" . }}
 	{{- end }}
 </head>
@@ -62,4 +62,4 @@
 {{- end }}
 {{- partial "mathjax.html" . -}}
 </body>
-</html>
\ No newline at end of file
+</html>
diff --git a/layouts/index.html b/layouts/index.html
index fb829c18..054d9d8d 100644
--- a/layouts/index.html
+++ b/layouts/index.html
@@ -1,24 +1,44 @@
 {{ define "main" }}
 <main class="main list" role="main">
-	{{- with .Content }}
-	<div class="content main__content clearfix">
-		{{ . }}
-	</div>
-	{{- end }}
-	{{ $paginator := .Paginate (where .Site.RegularPages "Type" "in" .Site.Params.mainSections) }}
-	{{- range $paginator.Pages }}
-		{{- .Render "summary" }}
-	{{- end }}
-	{{- if and (eq $paginator.TotalNumberOfElements 0) (not $.Content) }}
-		<div class="warning">
-			{{ partial "svg/files.svg" (dict "class" "warning__icon") }}
-			<h3 class="warning__headline">{{ T "noposts_warning_title" | safeHTML }}</h3>
-			<div class="warning__text">
-				<p class="warning__description">{{ T "noposts_warning_description" | safeHTML }}</p>
-				<p class="warning__tip">{{ T "noposts_warning_tip" | safeHTML }}</p>
-			</div>
-		</div>
-	{{ end }}
+    {{- with .Content }}
+    <div class="content main__content clearfix">
+        {{ . }}
+    </div>
+    {{- end }}
+    {{ $paginator := .Paginate (where .Site.RegularPages "Type" "in" .Site.Params.mainSections) }}
+    {{- range $paginator.Pages }}
+        {{- .Render "summary" }}
+    {{- end }}
+    {{- if and (eq $paginator.TotalNumberOfElements 0) (not $.Content) }}
+        <div class="warning">
+            {{ partial "svg/files.svg" (dict "class" "warning__icon") }}
+            <h3 class="warning__headline">{{ T "noposts_warning_title" | safeHTML }}</h3>
+            <div class="warning__text">
+                <p class="warning__description">{{ T "noposts_warning_description" | safeHTML }}</p>
+                <p class="warning__tip">{{ T "noposts_warning_tip" | safeHTML }}</p>
+            </div>
+        </div>
+    {{ end }}
+
+    <script type="text/x-mathjax-config">
+        MathJax.Hub.Config({
+            tex2jax: {
+                inlineMath: [ ['$','$'], ["\\(","\\)"] ],
+                displayMath: [ ['$$','$$'], ["\\[","\\]"] ],
+                processEscapes: true,
+                processEnvironments: true
+            }
+        });
+    </script>
+    <script type="text/javascript" async
+        src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.6/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
+    </script>
+
+    <script type="text/javascript">
+        MathJax.Hub.Queue(["Typeset", MathJax.Hub]);
+    </script>
+
 </main>
+
 {{ partial "pagination.html" . }}
-{{ end }}
\ No newline at end of file
+{{ end }}
diff --git a/layouts/partials/authorbox.html b/layouts/partials/authorbox.html
index 20d6dfec..85b9d611 100644
--- a/layouts/partials/authorbox.html
+++ b/layouts/partials/authorbox.html
@@ -1,24 +1,31 @@
 {{- if .Param "authorbox" }}
+{{- if .Params.author }}
+{{- with (index .Site.Author .Params.author) }}
 <div class="authorbox clearfix">
-	{{- if and (not .Site.Author.avatar) (not .Site.Author.name) (not .Site.Author.bio) }}
-	<p class="authorbox__warning">
-		<strong>WARNING:</strong> Authorbox is activated, but [Author] parameters are not specified.
-	</p>
-	{{- end }}
-	{{- with .Site.Author.avatar }}
-	<figure class="authorbox__avatar">
-		<img alt="{{ $.Site.Author.name }} avatar" src="{{ $.Site.Author.avatar | relURL }}" class="avatar" height="90" width="90">
-	</figure>
-	{{- end }}
-	{{- with .Site.Author.name }}
-	<div class="authorbox__header">
-		<span class="authorbox__name">{{ T "authorbox_name" (dict "Name" .) }}</span>
-	</div>
-	{{- end }}
-	{{- with .Site.Author.bio }}
-	<div class="authorbox__description">
-		{{ . | markdownify }}
-	</div>
-	{{- end }}
+  <figure class="authorbox__avatar">
+    <img alt="{{ .name }} avatar" src="{{ .avatar | relURL }}" class="avatar" height="90" width="90">
+  </figure>
+  <div class="authorbox__header">
+    <span class="authorbox__name">{{ T "authorbox_name" (dict "Name" .name) }}</span>
+  </div>
+  <div class="authorbox__description">
+    {{ .bio | markdownify }}
+  </div>
 </div>
-{{- end }}
\ No newline at end of file
+{{- end }}
+{{- else }}
+{{- with .Site.Author }}
+<div class="authorbox clearfix">
+  <figure class="authorbox__avatar">
+    <img alt="{{ .name }} avatar" src="{{ .avatar | relURL }}" class="avatar" height="90" width="90">
+  </figure>
+  <div class="authorbox__header">
+    <span class="authorbox__name">{{ T "authorbox_name" (dict "Name" .name) }}</span>
+  </div>
+  <div class="authorbox__description">
+    {{ .bio | markdownify }}
+  </div>
+</div>
+{{- end }}
+{{- end }}
+{{- end }}
diff --git a/layouts/partials/comments.html b/layouts/partials/comments.html
index 5b15071a..ccd01ac6 100644
--- a/layouts/partials/comments.html
+++ b/layouts/partials/comments.html
@@ -1,5 +1,5 @@
-{{ if and .Site.Config.Services.Disqus.Shortname (index .Params "comments" | default "true") (not .Site.IsServer) }}
+{{ if and .Site.Config.Services.Disqus.Shortname (index .Params "comments" | default "true") (not hugo.IsServer) }}
 <section class="comments">
 	{{ template "_internal/disqus.html" . }}
 </section>
-{{ end }}
\ No newline at end of file
+{{ end }}
diff --git a/layouts/partials/mathjax.html b/layouts/partials/mathjax.html
index 8a5ea042..98b624d8 100644
--- a/layouts/partials/mathjax.html
+++ b/layouts/partials/mathjax.html
@@ -1,3 +1,16 @@
 {{ if and .IsPage (eq (.Param "mathjax") true) }}
-<script src="{{ .Param "mathjaxPath" | default "https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.6/MathJax.js" }}{{ with .Param "mathjaxConfig" | default "TeX-AMS-MML_HTMLorMML" }}?config={{ . }}{{ end }}" async></script>
-{{ end }}
\ No newline at end of file
+<script type="text/x-mathjax-config">
+  MathJax.Hub.Config({
+    tex2jax: {
+      inlineMath: [ ['$','$'], ["\\(","\\)"] ],
+      displayMath: [ ['$$','$$'], ["\\[","\\]"] ],
+      processEscapes: true,
+      processEnvironments: true
+    }
+  });
+</script>
+<script type="text/javascript" async
+  src="{{ .Param "mathjaxPath" | default "https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.6/MathJax.js" }}{{
+    with .Param "mathjaxConfig" | default "TeX-AMS-MML_HTMLorMML" }}?config={{ . }}{{ end }}">
+</script>
+{{ end }}