.social-login-button.google {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.social-login-button.google::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 36%;
  width: 104px;
  height: 66px;
  background: url("image/google-login-watermark-20260503.png") center / contain no-repeat;
  opacity: 0.28;
  filter: blur(2.5px);
  transform: translate(-50%, -50%) rotate(-3deg);
  pointer-events: none;
  z-index: 0;
}