diff --git a/hero.js b/hero.js
index 4a18d99..0165d1f 100644
--- a/hero.js
+++ b/hero.js
@@ -25,7 +25,7 @@ const CYCLE_MS = 28000;
 const SEED = 7;
 const COUNT = 47;
 
-const CSS = `
+const STYLE_TEXT = `
 .redoal-paths {
   position: absolute;
   inset: 0;
@@ -58,7 +58,7 @@ function ensureStyle() {
     if (document.getElementById(STYLE_ID)) return;
     const style = document.createElement('style');
     style.id = STYLE_ID;
-    style.textContent = CSS;
+    style.textContent = STYLE_TEXT;
     document.head.appendChild(style);
 }