/* 粒子效果样式 */
#particles-js {
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 9999; /* 提高层级确保可见 */
  pointer-events: none; /* 允许点击穿透 */
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  border: red !important;
  pointer-events: none;
  user-select: none;
  transform: translate(-50%, -50%); /* 确保从点击中心扩散 */
}