增加黑幕的打印支持

modules/ext.isekai.less

@@ -140,6 +140,12 @@ html.content-loaded body.skin-timeless {
     color: #fff;
 }
 
+@media print {
+    .black-space {
+        color: #fff;
+    }
+}
+
 @media (prefers-color-scheme: dark) {
     body.auto-color-scheme .black-space {
         background-color: #fff;