.mirror-zoom-ruler {
  position: fixed;
  top: 8px;
  left: 50%;
  z-index: 1300;
  width: min(340px, calc(100vw - 24px));
  height: 46px;
  transform: translateX(-50%) translateY(-4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 220ms cubic-bezier(0.22, 1, 0.36, 1);
}

.mirror-zoom-ruler.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.mirror-zoom-ruler__track {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 7px;
  height: 26px;
  border-radius: 12px;
  background:
    radial-gradient(circle at 50% 100%, rgba(255, 193, 7, 0.12), transparent 44%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0.22));
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 10%, #000 90%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0, #000 10%, #000 90%, transparent 100%);
}

.mirror-zoom-ruler__ticks {
  position: absolute;
  inset: 7px 15px 0;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0;
}

.mirror-zoom-ruler__ticks::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.36), transparent);
}

.mirror-zoom-ruler__tick {
  width: 1.5px;
  height: calc(var(--tick-height, 18px) * 0.68);
  flex: 0 0 1.5px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  opacity: var(--tick-opacity, 0.7);
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.18);
}

.mirror-zoom-ruler__active {
  position: absolute;
  left: 15px;
  bottom: 7px;
  width: calc(var(--mirror-zoom-ruler-pos, 0.23) * (100% - 30px));
  height: 26px;
  overflow: hidden;
  background: linear-gradient(90deg, rgba(255, 193, 7, 0.24), rgba(255, 193, 7, 0.035));
  -webkit-mask-image: linear-gradient(90deg, #000 0, #000 calc(100% - 12px), transparent);
  mask-image: linear-gradient(90deg, #000 0, #000 calc(100% - 12px), transparent);
}

.mirror-zoom-ruler__active-ticks {
  position: absolute;
  left: 0;
  bottom: 0;
  width: calc(min(340px, calc(100vw - 24px)) - 30px);
  height: 18px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
}

.mirror-zoom-ruler__active-ticks .mirror-zoom-ruler__tick {
  background: rgba(255, 198, 24, 0.96);
  opacity: var(--tick-opacity, 0.7);
  box-shadow: 0 0 13px rgba(255, 198, 24, 0.5);
}

.mirror-zoom-ruler__marker {
  position: absolute;
  left: calc(15px + var(--mirror-zoom-ruler-pos, 0.23) * (100% - 30px));
  bottom: 4px;
  width: 3px;
  height: 32px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: linear-gradient(180deg, #ffffff, #ffce2f 45%, rgba(255, 206, 47, 0));
  box-shadow: 0 0 18px rgba(255, 206, 47, 0.72);
}

.mirror-zoom-ruler__bubble {
  position: absolute;
  left: calc(15px + var(--mirror-zoom-ruler-pos, 0.23) * (100% - 30px));
  top: 0;
  min-width: 29px;
  padding: 4px 7px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: rgba(14, 14, 14, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #fff;
  font: 700 12px/1 "DIN Condensed", "Bahnschrift", "Arial Narrow", sans-serif;
  text-align: center;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.42);
}

.mirror-zoom-ruler__label {
  position: absolute;
  left: calc(15px + var(--mirror-zoom-ruler-pos, 0.23) * (100% - 30px));
  bottom: 22px;
  transform: translateX(-50%);
  color: #ffd126;
  font: 700 10px/1 "Microsoft YaHei", sans-serif;
  text-shadow: 0 0 10px rgba(255, 193, 7, 0.82);
  white-space: nowrap;
}

body.mirror-fs-open .mirror-zoom-ruler {
  display: none;
}