/* Screen background only: the program preview and PDF retain their paper surface. */
@media screen {
  body.da-theme-yks {background:#f6f0db;isolation:isolate;}
  body.da-theme-yks::before {content:"";position:fixed;inset:0;z-index:-1;background:url("/assets/yks-background.webp?v=autumn-2") center center / cover no-repeat;pointer-events:none;}
  .da-theme-yks .control-panel {background:linear-gradient(135deg,#fffdf7e6,#f3e9dad9);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);}
}