/* 画布工作区背景加深（仅含 react-flow 的页面，不影响首页） */
html.dark:has(.react-flow) .react-flow,
html.dark:has(.react-flow) .react-flow__pane,
html.dark:has(.react-flow) .canvas-no-select,
html.dark:has(.react-flow) .react-flow__viewport {
  background-color: #0a0a0c !important;
}

/* Pixi 点阵底图层（限定在 react-flow 内，避免误伤全屏遮罩） */
html.dark:has(.react-flow) .react-flow .absolute.inset-0.z-0 {
  background-color: #0a0a0c !important;
}