style: lighten light-mode background to pure white

Author: misonijnik

src/index.css

@@ -10,7 +10,7 @@
     --font-sans: "JetBrains Mono", ui-monospace, monospace;
     --font-mono: "JetBrains Mono", monospace;
 
-    --background: 215 14% 98%;
+    --background: 0 0% 100%;
     --foreground: 215 14% 8%;
     --card: 0 0% 100%;
     --card-foreground: 215 10% 10%;