diff --git a/assets/css/compiled/main.css b/assets/css/compiled/main.css
index 01a0284..285fab9 100644
--- a/assets/css/compiled/main.css
+++ b/assets/css/compiled/main.css
@@ -1,4 +1,4 @@
-/*! Congo v2.7.6 | MIT License | https://github.com/jpanther/congo */
+/*! Congo v2.9.0 | MIT License | https://github.com/jpanther/congo */
 
 /*! tailwindcss v3.3.2 | MIT License | https://tailwindcss.com */
 
@@ -1115,6 +1115,12 @@ body:has(#menu-controller:checked) {
 
 /* Table of Contents */
 
+.toc {
+  max-height: 100vh;
+  overflow-y: auto;
+  padding-bottom: 50px;
+}
+
 .toc ul,
 .toc li {
   list-style-type: none;
@@ -1210,6 +1216,33 @@ body:has(#menu-controller:checked) {
   opacity: 0.05;
 }
 
+/* Fix long KaTeX equations on mobile (see https://katex.org/docs/issues.html#css-customization) */
+
+.katex-display {
+  overflow: auto hidden;
+}
+
+/* Fix long tables breaking out of article on mobile */
+
+table {
+  display: block;
+  overflow: auto;
+}
+
+@media (min-width: 768px) {
+  table {
+    display: table;
+  }
+}
+
+/* Fix long inline code sections breaking out of article on mobile */
+
+code {
+  word-wrap: break-word;
+  /* All browsers since IE 5.5+ */
+  overflow-wrap: break-word;
+}
+
 /* -- Chroma Highlight -- */
 
 /* Background */
@@ -1753,10 +1786,6 @@ body:has(#menu-controller:checked) {
   top: 5rem;
 }
 
-.top-8 {
-  top: 2rem;
-}
-
 .top-\[100vh\] {
   top: 100vh;
 }
@@ -1852,14 +1881,14 @@ body:has(#menu-controller:checked) {
   margin-top: -0.75rem;
 }
 
-.-mt-4 {
-  margin-top: -1rem;
-}
-
 .mb-1 {
   margin-bottom: 0.25rem;
 }
 
+.mb-10 {
+  margin-bottom: 2.5rem;
+}
+
 .mb-12 {
   margin-bottom: 3rem;
 }
@@ -1989,22 +2018,14 @@ body:has(#menu-controller:checked) {
   height: 3rem;
 }
 
-.h-2 {
-  height: 0.5rem;
-}
-
-.h-24 {
-  height: 6rem;
-}
-
-.h-36 {
-  height: 9rem;
-}
-
 .h-8 {
   height: 2rem;
 }
 
+.h-auto {
+  height: auto;
+}
+
 .h-full {
   height: 100%;
 }
@@ -2144,6 +2165,10 @@ body:has(#menu-controller:checked) {
   align-items: flex-start;
 }
 
+.items-end {
+  align-items: flex-end;
+}
+
 .items-center {
   align-items: center;
 }
@@ -2981,6 +3006,11 @@ body:has(#menu-controller:checked) {
   visibility: visible;
 }
 
+.group:hover .group-hover\:-translate-x-\[-2px\] {
+  --tw-translate-x: 2px;
+  transform: translate(var(--tw-translate-x), var(--tw-translate-y)) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y));
+}
+
 .group:hover .group-hover\:-translate-x-\[2px\] {
   --tw-translate-x: -2px;
   transform: translate(var(--tw-translate-x), var(--tw-translate-y)) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y));
diff --git a/layouts/partials/footer.html b/layouts/partials/footer.html
index b53273f..f515e89 100644
--- a/layouts/partials/footer.html
+++ b/layouts/partials/footer.html
@@ -76,9 +76,6 @@
     <div class="flex items-center gap-4">
       <img src="/kube.png" width="30" height="30" alt="Kubernetes"
         title="Run on K3s over Hetzner Cloud" />
-      <a href="https://concourse.okami101.io/teams/main/pipelines/okami-blog" target="_blank">
-        <img src="https://concourse.okami101.io/api/v1/teams/main/pipelines/okami-blog/badge" alt="build" />
-      </a>
     </div>
     <div class="hidden lg:block">
       {{/* Copyright */}}
diff --git a/themes/congo b/themes/congo
index 5c8ab32..066983f 160000
--- a/themes/congo
+++ b/themes/congo
@@ -1 +1 @@
-Subproject commit 5c8ab32b5b93efba10ef3e66d7e0eda6e2e40d05
+Subproject commit 066983f3d18b985fc8796529d2c3e69412d9aeee