.opening-screen {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  inset: 0;
  z-index: 9998;
  display: grid;
  place-items: center;
  background: #000;
  outline: none;
}
.opening-screen[hidden] { display: none; }
.opening-frame { background: #000; }
.opening-video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.opening-warning {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0;
}
.opening-warning[hidden], .opening-video[hidden] { display: none; }
.opening-message {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 24px;
  background: #000;
  color: #d0e9cb;
  text-align: center;
  font: 14px/1.5 system-ui, sans-serif;
}
.opening-message[hidden], .opening-message button[hidden] { display: none; }
.opening-message button {
  min-height: 44px;
  padding: 8px 20px;
  border: 1px solid #40b52b;
  border-radius: 6px;
  background: #111;
  color: #d0e9cb;
  cursor: pointer;
}