diff --git a/style.css b/style.css
index 04cece5..d22ee5e 100644
--- a/style.css
+++ b/style.css
@@ -240,5 +240,12 @@ h2 { font-size: 1.25rem; }
   .tr-l { text-align: right; }
   .mt5-l { margin-top: 3rem; }
 }
+@media (prefers-color-scheme: dark) {
+  a, a:link, a:visited { color: #ffe489; }
+  body, html { background-color: #111111; color: #888888; }
+  .oams { color: #ffef89; }
+  pre { background-color: #111111; color: #aaaaaa; }
+  .clean { background-color: #111111; color: #aaaaaa; }
+}
 
 .cut *, .cut *::before { color: #ccc; background-color: #f4f4f4; }