:root { color-scheme: dark; }

html,
body,
#game,
#bg {
  background-color: #000 !important;
}

#bg[class*="bg-"],
#bioPuzzle,
#actorPuzzle,
#schedule,
#report,
.puzzle-screen,
.full-screen,
.result-screen,
.stage-screen {
  background-color: #000 !important;
  background-image: none !important;
}

#advBox,
.ch,
.ov-body,
.bp-r-card,
.rp-row,
.set-r,
.fl-c,
.vd-hot {
  background-color: rgba(255, 255, 255, .025) !important;
}