diff --git a/site/robots.txt b/site/robots.txt
new file mode 100644
index 0000000..6ffbc30
--- /dev/null
+++ b/site/robots.txt
@@ -0,0 +1,3 @@
+User-agent: *
+Disallow: /
+
diff --git a/site/style.css b/site/style.css
index c2fda8b..3dab417 100644
--- a/site/style.css
+++ b/site/style.css
@@ -1,23 +1,35 @@
 html {
-	color-scheme: dark;
-	color: #fff;
 	font-family: sans-serif;
-	background-color: #111;
 }
 
 main {
-	width: calc(100% - 82px);
-	max-width: 800px;
-	background-color: #222;
 	margin: auto;
 	padding: 2px 32px 32px;
+	max-width: 800px;
+	width: calc(100% - 82px);
 	border-left: 4px solid #d3f;
+	background-color: #f8eeff;
 }
 
 code {
 	font-size: 1rem;
-	background-color: #1c1c1c;
-	color: #f90;
+	background-color: #eeccee;
+	color: #003;
+}
+
+@media (prefers-color-scheme: dark) {
+	body {
+		color-scheme: dark;
+		color: #fff;
+		background-color: #111;
+	}
+	main {
+		background-color: #222;
+	}
+	code {
+		background-color: #1c1c1c;
+		color: #f90;
+	}
 }
 
 video, img { max-width: 100%; }