diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 3654ce0..326b8b2 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -31,7 +31,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     env:
-      HUGO_VERSION: 0.145.0
+      HUGO_VERSION: 0.157.0
       HUGO_ENVIRONMENT: production
       TZ: America/Los_Angeles
     steps:
diff --git a/layouts/_default/home.html b/layouts/_default/home.html
index 0df6597..fc9aa2d 100644
--- a/layouts/_default/home.html
+++ b/layouts/_default/home.html
@@ -1,7 +1,108 @@
 {{ define "main" }}
-  {{ .Content }}
-  {{ range site.RegularPages }}
-    <h2><a href="{{ .RelPermalink }}">{{ .LinkTitle }}</a></h2>
-    {{ .Summary }}
-  {{ end }}
+
+{{ partial "search-index.html" . }}
+
+<h2>Welcome to Lemonium!</h2>
+
+<img src="/images/logo.svg" alt="Lemonium Logo" style="padding: 0;max-width: 100%;" />
+
+<p>{{ i18n "index-description" }}</p>
+
+<h2 class="toppage-h">Information</h2>
+<!-- News and Information -->
+
+<div class="info-card">
+    <!-- タイトルが Posts になっているページを除外 -->
+    {{ range ( first 3 ( where ( where .Site.Pages "Type" "posts" ) ".Title" "!=" "Posts" )) }}
+        <a href="{{ .Permalink }}">
+            <p id="info-date">{{ .Date.Format "2006.01.02" }}</p>
+            <p id="info-title">{{ .Title }}</p>
+            <p id="info-summary">{{ .Summary | plainify }}…</p>
+        </a>
+    {{ end }}
+</div>
+
+<!-- タグ指定 ("未定"タグ)
+{{ range ( first 3 ( where .Site.RegularPages "Params.tags" "intersect" (slice "未定"))) }}
+<li>
+    <a href="{{ .Permalink }}">{{ .Title }}</a>
+    <p>{{ .Summary | plainify }}</p>
+</li>
+{{ end }}
+-->
+
+<p><a href="{{ relLangURL "/posts/" }}">See more...</a></p>
+
+<h2 class="toppage-h">Research & Development</h2>
+<!-- External Documentation -->
+
+{{ if eq .Site.Language.Lang "ja" }}
+<div class="info-card">
+    {{ with resources.GetRemote "https://qiita.com/Lemon73/feed" | transform.Unmarshal }}
+        {{ range ( first 3 .entry ) }}
+            <a href="{{ .url }}" target="_blank">
+                <p id="info-date">{{ .published | time.Format "2006.01.02" }} (Qiita)</p>
+                <p id="info-title">{{ .title }}</p>
+                <p id="info-summary">{{ index .content "#text" | plainify }}</p>
+            </a>
+        {{ end }}
+    {{ end }}
+</div>
+
+<p><a href="https://qiita.com/Lemon73" target="_blank">See more...</a></p>
+{{ else if eq .Site.Language.Lang "en" }}
+<div class="info-card">
+    {{ with resources.GetRemote "https://alicenovel.web.app/en/blog/index.xml" | transform.Unmarshal }}
+        {{ range ( first 3 .channel.item ) }}
+            <a href="https://alicenovel.web.app{{ .link }}" target="_blank">
+                <p id="info-date">{{ .pubDate | time.Format "2006.01.02" }} (Alice Project)</p>
+                <p id="info-title">{{ .title }}</p>
+                <p id="info-summary">{{ index .description | plainify }}</p>
+            </a>
+        {{ end }}
+    {{ end }}
+</div>
+
+<p><a href="https://alicenovel.web.app/en/blog" target="_blank">See more...</a></p>
+{{ end }}
+
+<h2 class="toppage-h">About</h2>
+
+<p>
+    {{ i18n "index-about-1" }}<br />
+    {{ i18n "index-about-2" }}
+</p>
+
+<p><a href="{{ relLangURL "/about/lra/" }}">See more...</a></p>
+
+<h2 class="toppage-h">Contacts</h2>
+
+<ul class="social-links">
+    <li>
+        <a href="https://www.youtube.com/@lemon73" target="_blank">
+            <img src="/images/social-media/youtube.svg" alt="youtube">
+            YouTube
+        </a>
+    </li>
+    <li>
+        <a href="https://misskey.io/@lemon73" target="_blank">
+            <img src="/images/social-media/misskey.svg" alt="youtube">
+            Misskey.io
+        </a>
+    </li>
+    <li>
+        <a href="https://github.com/Lemon73-Computing" target="_blank">
+            <img src="/images/social-media/github.svg" alt="youtube">
+            GitHub
+        </a>
+    </li>
+    <!--
+    <li>
+        <a href="" target="_blank">
+            Contact Form ({{ i18n "wip" }})
+        </a>
+    </li>
+    -->
+</ul>
+
 {{ end }}
diff --git a/layouts/partials/footer.html b/layouts/_partials/footer.html
similarity index 100%
rename from layouts/partials/footer.html
rename to layouts/_partials/footer.html
diff --git a/layouts/partials/google_analytics.html b/layouts/_partials/google_analytics.html
similarity index 100%
rename from layouts/partials/google_analytics.html
rename to layouts/_partials/google_analytics.html
diff --git a/layouts/partials/head.html b/layouts/_partials/head.html
similarity index 100%
rename from layouts/partials/head.html
rename to layouts/_partials/head.html
diff --git a/layouts/partials/head/css.html b/layouts/_partials/head/css.html
similarity index 100%
rename from layouts/partials/head/css.html
rename to layouts/_partials/head/css.html
diff --git a/layouts/partials/head/js.html b/layouts/_partials/head/js.html
similarity index 100%
rename from layouts/partials/head/js.html
rename to layouts/_partials/head/js.html
diff --git a/layouts/partials/header.html b/layouts/_partials/header.html
similarity index 100%
rename from layouts/partials/header.html
rename to layouts/_partials/header.html
diff --git a/layouts/partials/language-switcher.html b/layouts/_partials/language-switcher.html
similarity index 100%
rename from layouts/partials/language-switcher.html
rename to layouts/_partials/language-switcher.html
diff --git a/layouts/partials/menu.html b/layouts/_partials/menu.html
similarity index 100%
rename from layouts/partials/menu.html
rename to layouts/_partials/menu.html
diff --git a/layouts/partials/search-form.html b/layouts/_partials/search-form.html
similarity index 100%
rename from layouts/partials/search-form.html
rename to layouts/_partials/search-form.html
diff --git a/layouts/partials/search-index.html b/layouts/_partials/search-index.html
similarity index 100%
rename from layouts/partials/search-index.html
rename to layouts/_partials/search-index.html
diff --git a/layouts/partials/terms.html b/layouts/_partials/terms.html
similarity index 100%
rename from layouts/partials/terms.html
rename to layouts/_partials/terms.html
diff --git a/layouts/index.html b/layouts/index.html
deleted file mode 100644
index fc9aa2d..0000000
--- a/layouts/index.html
+++ /dev/null
@@ -1,108 +0,0 @@
-{{ define "main" }}
-
-{{ partial "search-index.html" . }}
-
-<h2>Welcome to Lemonium!</h2>
-
-<img src="/images/logo.svg" alt="Lemonium Logo" style="padding: 0;max-width: 100%;" />
-
-<p>{{ i18n "index-description" }}</p>
-
-<h2 class="toppage-h">Information</h2>
-<!-- News and Information -->
-
-<div class="info-card">
-    <!-- タイトルが Posts になっているページを除外 -->
-    {{ range ( first 3 ( where ( where .Site.Pages "Type" "posts" ) ".Title" "!=" "Posts" )) }}
-        <a href="{{ .Permalink }}">
-            <p id="info-date">{{ .Date.Format "2006.01.02" }}</p>
-            <p id="info-title">{{ .Title }}</p>
-            <p id="info-summary">{{ .Summary | plainify }}…</p>
-        </a>
-    {{ end }}
-</div>
-
-<!-- タグ指定 ("未定"タグ)
-{{ range ( first 3 ( where .Site.RegularPages "Params.tags" "intersect" (slice "未定"))) }}
-<li>
-    <a href="{{ .Permalink }}">{{ .Title }}</a>
-    <p>{{ .Summary | plainify }}</p>
-</li>
-{{ end }}
--->
-
-<p><a href="{{ relLangURL "/posts/" }}">See more...</a></p>
-
-<h2 class="toppage-h">Research & Development</h2>
-<!-- External Documentation -->
-
-{{ if eq .Site.Language.Lang "ja" }}
-<div class="info-card">
-    {{ with resources.GetRemote "https://qiita.com/Lemon73/feed" | transform.Unmarshal }}
-        {{ range ( first 3 .entry ) }}
-            <a href="{{ .url }}" target="_blank">
-                <p id="info-date">{{ .published | time.Format "2006.01.02" }} (Qiita)</p>
-                <p id="info-title">{{ .title }}</p>
-                <p id="info-summary">{{ index .content "#text" | plainify }}</p>
-            </a>
-        {{ end }}
-    {{ end }}
-</div>
-
-<p><a href="https://qiita.com/Lemon73" target="_blank">See more...</a></p>
-{{ else if eq .Site.Language.Lang "en" }}
-<div class="info-card">
-    {{ with resources.GetRemote "https://alicenovel.web.app/en/blog/index.xml" | transform.Unmarshal }}
-        {{ range ( first 3 .channel.item ) }}
-            <a href="https://alicenovel.web.app{{ .link }}" target="_blank">
-                <p id="info-date">{{ .pubDate | time.Format "2006.01.02" }} (Alice Project)</p>
-                <p id="info-title">{{ .title }}</p>
-                <p id="info-summary">{{ index .description | plainify }}</p>
-            </a>
-        {{ end }}
-    {{ end }}
-</div>
-
-<p><a href="https://alicenovel.web.app/en/blog" target="_blank">See more...</a></p>
-{{ end }}
-
-<h2 class="toppage-h">About</h2>
-
-<p>
-    {{ i18n "index-about-1" }}<br />
-    {{ i18n "index-about-2" }}
-</p>
-
-<p><a href="{{ relLangURL "/about/lra/" }}">See more...</a></p>
-
-<h2 class="toppage-h">Contacts</h2>
-
-<ul class="social-links">
-    <li>
-        <a href="https://www.youtube.com/@lemon73" target="_blank">
-            <img src="/images/social-media/youtube.svg" alt="youtube">
-            YouTube
-        </a>
-    </li>
-    <li>
-        <a href="https://misskey.io/@lemon73" target="_blank">
-            <img src="/images/social-media/misskey.svg" alt="youtube">
-            Misskey.io
-        </a>
-    </li>
-    <li>
-        <a href="https://github.com/Lemon73-Computing" target="_blank">
-            <img src="/images/social-media/github.svg" alt="youtube">
-            GitHub
-        </a>
-    </li>
-    <!--
-    <li>
-        <a href="" target="_blank">
-            Contact Form ({{ i18n "wip" }})
-        </a>
-    </li>
-    -->
-</ul>
-
-{{ end }}