diff --git a/.forgejo/workflows/deploy.yaml b/.forgejo/workflows/deploy.yaml
index f728bde..db47f8e 100644
--- a/.forgejo/workflows/deploy.yaml
+++ b/.forgejo/workflows/deploy.yaml
@@ -11,7 +11,7 @@ jobs:
   build:
     runs-on: docker
     container:
-      image: docker.io/hugomods/hugo:0.150.1
+      image: docker.io/hugomods/hugo:0.165.0
     steps:
       - name: Pipeline info
         run: |
diff --git a/assets/sass/_custom.scss b/assets/css/_custom.css
similarity index 82%
rename from assets/sass/_custom.scss
rename to assets/css/_custom.css
index 82c3220..0ccee24 100644
--- a/assets/sass/_custom.scss
+++ b/assets/css/_custom.css
@@ -18,11 +18,15 @@ th, td {
   margin-left: 2em;
 }
 
+/* Zen v7 paints body with --color-body-bg and .page with --color-page-bg. */
+:root {
+    --color-body-bg: light-dark(var(--color-grey-100), #141414);
+    --color-page-bg: light-dark(var(--color-white), #242424);
+}
+
 @media (prefers-color-scheme: dark) {
     :root {
-        --color-backdrop: #141414;
         --color-headings: #faf5f5;
-        --color-body-bg: #242424;
         --color-header-bg: #242424;
         --color-text: #faf5f5;
         --color-link: #66f2ff;
diff --git a/hugo.yaml b/hugo.yaml
index 3515e66..3f5235f 100644
--- a/hugo.yaml
+++ b/hugo.yaml
@@ -1,16 +1,15 @@
 baseURL: 'https://hackertours.hamburg.ccc.de/'
 defaultContentLanguage: de
 defaultContentLanguageInSubdir: true
-#languageCode: 'de-de'
 title: 'Hamburg Hackertours'
 theme: "zen"
+copyright: "[CCC Hansestadt Hamburg e.V.](https://hamburg.ccc.de) ist nur der Vermittler der Touren. Für das Angebot und die Durchführung der Touren sind die jeweiligen Veranstalter verantwortlich."
 ignoreLogs:
   - 'warning-frontmatter-params-overrides'
 
 #https://themes.gohugo.io/themes/hugo-theme-zen/#configuration
 params:
     contact: "ticket@hackertours.hamburg.ccc.de"
-    copyright: "[CCC Hansestadt Hamburg e.V.](https://hamburg.ccc.de) ist nur der Vermittler der Touren. Für das Angebot und die Durchführung der Touren sind die jeweiligen Veranstalter verantwortlich."
     dateFormat: "02.01.2006 15:04"
     description: "Hamburg Hackertours"
     footer: "[Impressum & Datenschutz](https://hamburg.ccc.de/imprint/) – [Ticket Shop](https://tickets.hamburg.ccc.de/hackertours/39c3ht/)"
@@ -28,19 +27,19 @@ params:
 languages:
   en:
     weight: 1
-    languageName: "English"
-    languageCode: "en"
+    label: "English"
+    locale: "en"
     contentDir: content/en
     pagination:
       pagerSize: 25
     params:
-      copyright: "[CCC Hansestadt Hamburg e.V.](https://hamburg.ccc.de) only acts as an agent for the tours. The respective tour operators are responsible for the offer and running of the tours."
       footer: "[Imprint & Data Protection](https://hamburg.ccc.de/imprint/) – [Ticket Shop](https://tickets.hamburg.ccc.de/hackertours/39c3ht/)"
     title: "Hamburg Hackertours"
+    copyright: "[CCC Hansestadt Hamburg e.V.](https://hamburg.ccc.de) only acts as an agent for the tours. The respective tour operators are responsible for the offer and running of the tours."
   de:
     weight: 2
-    languageName: "Deutsch"
-    languageCode: "de"
+    label: "Deutsch"
+    locale: "de"
     contentDir: content/de
     pagination:
       pagerSize: 25
diff --git a/layouts/_partials/mobilemenu.html b/layouts/_partials/mobilemenu.html
index 844b94a..af2cf49 100644
--- a/layouts/_partials/mobilemenu.html
+++ b/layouts/_partials/mobilemenu.html
@@ -8,7 +8,7 @@
       <rect width="80" height="12" x="10" y="70" rx="5"></rect>
     </svg>
   </button>
-  <div class="mobile-nav__sheet link-inverted link-nav" id="sheet" aria-hidden="true">
+  <div class="mobile-nav__sheet link-nav" id="sheet" data-theme="dark" aria-hidden="true">
     <div class="mobile-nav__region">{{ if hugo.IsMultilingual }}{{ partial "language-selector.html" . }}{{ end }}</div>
     <nav class="mobile-nav__main-menu" aria-label="{{ i18n "menu_title" }}">
     <ul class="mobile-nav__navbar">
diff --git a/layouts/shortcodes/lang.html b/layouts/_shortcodes/lang.html
similarity index 81%
rename from layouts/shortcodes/lang.html
rename to layouts/_shortcodes/lang.html
index d3a1a63..f5333fb 100644
--- a/layouts/shortcodes/lang.html
+++ b/layouts/_shortcodes/lang.html
@@ -6,11 +6,11 @@
   {{- $label := cond (eq $code "de") "DE" (cond (eq $code "en") "EN" (cond (eq $code "deen") "DE/EN" "")) -}}
   {{- $title := "" -}}
   {{- if eq $code "deen" -}}
-      {{- $title = cond (eq .Site.Language.Lang "de") "Diese Tour wird zweisprachig stattfinden (Deutsch und Englisch)" "This tour will be bilingual (German and English)" -}}
+      {{- $title = cond (eq .Site.Language.Name "de") "Diese Tour wird zweisprachig stattfinden (Deutsch und Englisch)" "This tour will be bilingual (German and English)" -}}
   {{- else if eq $code "de" -}}
-      {{- $title = cond (eq .Site.Language.Lang "de") "Diese Tour wird auf Deutsch stattfinden" "This tour will be held in German" -}}
+      {{- $title = cond (eq .Site.Language.Name "de") "Diese Tour wird auf Deutsch stattfinden" "This tour will be held in German" -}}
   {{- else if eq $code "en" -}}
-      {{- $title = cond (eq .Site.Language.Lang "de") "Diese Tour wird auf Englisch stattfinden" "This tour will be held in English" -}}
+      {{- $title = cond (eq .Site.Language.Name "de") "Diese Tour wird auf Englisch stattfinden" "This tour will be held in English" -}}
   {{- end -}}
   <abbr style="font-size: .65em; vertical-align: super;" title="{{ $title }}">{{ $label }}</abbr>
 {{- end -}}
\ No newline at end of file
diff --git a/layouts/shortcodes/map-39c3.html b/layouts/_shortcodes/map-39c3.html
similarity index 100%
rename from layouts/shortcodes/map-39c3.html
rename to layouts/_shortcodes/map-39c3.html
diff --git a/layouts/_default/baseof.html b/layouts/baseof.html
similarity index 74%
rename from layouts/_default/baseof.html
rename to layouts/baseof.html
index c63d4e5..80fc131 100644
--- a/layouts/_default/baseof.html
+++ b/layouts/baseof.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html class="nojs" lang="{{ site.LanguageCode | default site.Language.Lang }}" dir="{{ site.Language.LanguageDirection | default "ltr" }}">
+<html class="nojs" lang="{{ site.Language.Locale | default site.Language.Name }}" dir="{{ site.Language.Direction | default "ltr" }}"{{ with $.Param "colorScheme" }} data-theme="{{ . }}"{{ end }}>
 <head>
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width">
@@ -15,7 +15,7 @@
 {{ block "head" . }}{{ end }}
 </head>
 
-<body class="{{ if .IsPage }}single-page{{ else }}list-page{{ end }}{{ if .IsHome }} front{{ end }}{{ with $.Param "bodyclass" }} {{ . }}{{ end }}">
+<body class="{{ if .IsPage }}single-page{{ else }}list-page{{ end }}{{ if .IsHome }} front{{ end }}{{ with .Section }} section-page--{{ . | urlize }}{{ end }}{{ with $.Param "bodyclass" }} {{ . }}{{ end }}">
 <div class="page layout__page{{ if $.Param "sidebar" }} layout__sidebar-second{{ end }}">
 <header class="header layout__header">
 {{ if $.Param "logo" | default true -}}
@@ -41,14 +41,7 @@
 {{ if $.Param "sidebar" }}{{ partial "sidebar.html" . }}{{ end -}}
 
 <footer class="footer layout__footer mt--l">
-{{ if templates.Exists "partials/footer.html" -}}
 {{ partial "footer.html" . }}
-{{ else -}}
-{{ if $.Param "feedlinks" }}{{ partial "feedlinks.html" . }}{{ end -}}
-<p>{{ with $.Param "copyright" }}{{ . | markdownify }}{{ else }}<span>© {{ site.Title }}</span>{{ end }}</p>
-{{ with $.Param "footer" }}<p>{{ . | markdownify }}</p>{{ end }}
-{{ if $.Param "poweredby" }}<p>Powered by <a href="https://gohugo.io/">Hugo</a> and the <a href="https://github.com/frjo/hugo-theme-zen">Zen theme</a>.</p>{{ end }}
-{{ end -}}
 </footer>
 
 {{ if $.Param "cookieconsent" }}{{ partialCached "cookieconsent.html" . }}{{ end -}}
diff --git a/layouts/_default/home-baseof.html b/layouts/home-baseof.html
similarity index 73%
rename from layouts/_default/home-baseof.html
rename to layouts/home-baseof.html
index 3474c65..eeabcc8 100644
--- a/layouts/_default/home-baseof.html
+++ b/layouts/home-baseof.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html class="nojs" lang="{{ site.LanguageCode | default site.Language.Lang }}" dir="{{ site.Language.LanguageDirection | default "ltr" }}">
+<html class="nojs" lang="{{ site.Language.Locale | default site.Language.Name }}" dir="{{ site.Language.Direction | default "ltr" }}"{{ with $.Param "colorScheme" }} data-theme="{{ . }}"{{ end }}>
 <head>
 <meta charset="utf-8">
 <meta name="viewport" content="width=device-width">
@@ -15,7 +15,7 @@
 {{ block "head" . }}{{ end }}
 </head>
 
-<body class="{{ if .IsPage }}single-page{{ else }}list-page{{ end }}{{ if .IsHome }} front{{ end }}{{ with $.Param "bodyclass" }} {{ . }}{{ end }}">
+<body class="{{ if .IsPage }}single-page{{ else }}list-page{{ end }}{{ if .IsHome }} front{{ end }}{{ with .Section }} section-page--{{ . | urlize }}{{ end }}{{ with $.Param "bodyclass" }} {{ . }}{{ end }}">
 <div class="page layout__page{{ if $.Param "sidebar" }} layout__sidebar-second{{ end }}">
 <header class="header layout__header">
 {{ if $.Param "logo" | default true -}}
@@ -43,14 +43,7 @@
 {{ if $.Param "sidebar" }}{{ partial "sidebar.html" . }}{{ end -}}
 
 <footer class="footer layout__footer mt--l">
-{{ if templates.Exists "partials/footer.html" -}}
 {{ partial "footer.html" . }}
-{{ else -}}
-{{ if $.Param "feedlinks" }}{{ partial "feedlinks.html" . }}{{ end -}}
-<p>{{ with $.Param "copyright" }}{{ . | markdownify }}{{ else }}<span>© {{ site.Title }}</span>{{ end }}</p>
-{{ with $.Param "footer" }}<p>{{ . | markdownify }}</p>{{ end }}
-{{ if $.Param "poweredby" }}<p>Powered by <a href="https://gohugo.io/">Hugo</a> and the <a href="https://github.com/frjo/hugo-theme-zen">Zen theme</a>.</p>{{ end }}
-{{ end -}}
 </footer>
 
 {{ if $.Param "cookieconsent" }}{{ partialCached "cookieconsent.html" . }}{{ end -}}
diff --git a/layouts/index.html b/layouts/home.html
similarity index 100%
rename from layouts/index.html
rename to layouts/home.html
diff --git a/layouts/_default/list-bytitle.html b/layouts/list-bytitle.html
similarity index 100%
rename from layouts/_default/list-bytitle.html
rename to layouts/list-bytitle.html
diff --git a/layouts/_default/summary.html b/layouts/summary.html
similarity index 100%
rename from layouts/_default/summary.html
rename to layouts/summary.html
diff --git a/themes/zen b/themes/zen
index acc3f62..6d4ee82 160000
--- a/themes/zen
+++ b/themes/zen
@@ -1 +1 @@
-Subproject commit acc3f6277010b9eac4290c86f340330616fe2d54
+Subproject commit 6d4ee822a88a3dbe2443b2c985523e376f47056f