/* 看板娘 · 猫猫 v1（所有参数走令牌，勿在结构里写死尺寸） */
#m4-root {
  position: fixed;
  left: var(--m4-left, 0px);
  bottom: var(--m4-bottom, 0px);
  width: var(--m4-width, 255px);
  aspect-ratio: var(--m4-aspect, 1680 / 2060);
  z-index: var(--m4-z, 9998);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  pointer-events: auto;
}

#m4-root .m4-breather,
#m4-root .m4-shaker {
  position: absolute;
  inset: 0;
  transform-origin: 50% 100%;
}

#m4-root .m4-layer {
  position: absolute;
  display: block;
  pointer-events: none;
  -webkit-user-drag: none;
  user-select: none;
}

#m4-root .m4-base { z-index: 1; }
#m4-root .m4-iris { z-index: 2; }
#m4-root .m4-eye  { z-index: 3; }
#m4-root .m4-ear  { z-index: 4; }

#m4-root .m4-shaker.m4-bounce {
  animation: m4-bounce 520ms cubic-bezier(.28, .84, .42, 1);
}
@keyframes m4-bounce {
  0%   { transform: translateY(0) scale(1); }
  28%  { transform: translateY(calc(var(--m4-lift) * -1)) scale(var(--m4-scale)); }
  55%  { transform: translateY(0) scale(1); }
  76%  { transform: translateY(calc(var(--m4-lift) * -0.34)) scale(1.006); }
  100% { transform: translateY(0) scale(1); }
}

#m4-ear-left.m4-twitch { animation: m4-ear-l var(--m4-ear-duration) ease; }
#m4-ear-right.m4-twitch { animation: m4-ear-r var(--m4-ear-duration) ease; }
@keyframes m4-ear-l {
  0%, 100% { transform: rotate(0deg); }
  32% { transform: rotate(calc(var(--m4-ear-angle) * -1)); }
  64% { transform: rotate(calc(var(--m4-ear-angle) * 0.45)); }
}
@keyframes m4-ear-r {
  0%, 100% { transform: rotate(0deg); }
  32% { transform: rotate(var(--m4-ear-angle)); }
  64% { transform: rotate(calc(var(--m4-ear-angle) * -0.45)); }
}

#m4-bubble {
  position: absolute;
  left: calc(100% + 8px);
  top: 14%;
  z-index: 5;
  max-width: 180px;
  padding: 8px 12px;
  background: var(--m4-bubble-bg, #fffdf6);
  color: var(--m4-bubble-color, #6b4a2f);
  font-size: var(--m4-bubble-font, 14px);
  line-height: 1.45;
  border-radius: var(--m4-bubble-radius, 14px);
  box-shadow: 0 4px 12px rgba(60, 40, 20, 0.16);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity .22s ease, transform .22s ease;
  pointer-events: none;
}
#m4-bubble.m4-show { opacity: 1; transform: translateY(0); }
#m4-bubble::after {
  content: "";
  position: absolute;
  right: 100%;
  top: 16px;
  border: 7px solid transparent;
  border-right-color: var(--m4-bubble-bg, #fffdf6);
}

@media (max-width: 768px) {
  #m4-root { width: var(--m4-width-mobile, 145px); }
  #m4-bubble { max-width: 128px; font-size: 13px; }
}