perf: optimize branded 404 artwork

public/assets/styles.css

@@ -957,7 +957,7 @@ dialog::backdrop {
 .not-found-visual {
   position: relative;
   isolation: isolate;
-  width: clamp(190px, 39vmin, 414px);
+  width: clamp(127px, 26vmin, 276px);
   max-width: 100%;
 }
 
@@ -974,14 +974,14 @@ dialog::backdrop {
   background:
     radial-gradient(
       ellipse at 50% 47%,
-      rgb(255 255 255 / 58%) 0%,
-      rgb(244 248 244 / 36%) 36%,
-      rgb(211 224 213 / 16%) 58%,
+      rgb(0 255 65 / 48%) 0%,
+      rgb(0 230 57 / 30%) 36%,
+      rgb(0 128 33 / 14%) 58%,
       transparent 76%
     ),
     radial-gradient(
       ellipse at 50% 48%,
-      rgb(192 216 198 / 12%) 0%,
+      rgb(0 255 65 / 14%) 0%,
       transparent 72%
     );
   content: "";
@@ -993,7 +993,7 @@ dialog::backdrop {
   display: block;
   width: 100%;
   height: auto;
-  filter: contrast(1.06) drop-shadow(0 0 18px rgb(229 226 225 / 14%));
+  filter: contrast(1.06) drop-shadow(0 0 16px rgb(0 255 65 / 16%));
 }
 
 .not-found-action {