#read-progress-label {
  position: fixed;
  right: 18px;
  bottom: 18px;
  padding: 3px 10px;
  font-size: 12px;
  font-family: Consolas, monospace;
  color: #fff;
  background: rgba(102, 126, 234, 0.85);
  border-radius: 12px;
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}