.avatar {
  display: inline-block;
  border-radius: 50%;
  padding: 5px;
  background: rgba(200, 200, 200, 0.3);
  box-shadow:
    0 0 10px 4px rgba(150, 150, 150, 0.8),
    0 0 20px 8px rgba(100, 100, 100, 0.5);
  transition: box-shadow 0.5s ease;
}

.avatar:hover {
  box-shadow:
    0 0 20px 8px rgba(150, 150, 150, 1),
    0 0 40px 16px rgba(100, 100, 100, 0.85);
}

.avatar img {
  border-radius: 50%;
  display: block;
  width: 100%;
  height: auto;
  transition: transform 0.8s ease;
  cursor: pointer;
}

.avatar img:hover {
  transform: rotateY(360deg);
}


#主页头像下的动态图标
.icon-links {
  text-align: center;
  margin-top: 20px;
}

.icon-link {
  position: relative;
  display: inline-block;
  margin: 0 12px;
  font-size: 32px;
  color: #555;
  cursor: pointer;
  animation: floatAnim 3s ease-in-out infinite;
  transition: color 0.3s ease, transform 0.3s ease;
}

.icon-link:nth-child(2) {
  animation-delay: 0.2s;
}
.icon-link:nth-child(3) {
  animation-delay: 0.4s;
}
.icon-link:nth-child(4) {
  animation-delay: 0.6s;
}

.icon-link:hover {
  color: #1abc9c;
  transform: scale(1.2);
  animation-play-state: paused;
}

/* 浮动动画 */
@keyframes floatAnim {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Tooltip */
.tooltip {
  position: absolute;
  bottom: 140%;
  left: 50%;
  transform: translateX(-50%);
  background: #222;
  color: white;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.icon-link:hover .tooltip {
  opacity: 1;
}