.pic {
  position: relative; /* 关键属性，为角标定位提供基准 */
}

.corner-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 40px;
  height: 40px;
  background: #E46034;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 14px;
  font-weight: bold;
  box-shadow: 0 4px 10px rgba(231, 76, 60, 0.4);
  z-index: 10;
  transition: all 0.3s ease;
}

.corner-badge:hover {
  transform: scale(1.1) rotate(15deg);
  background: #e47d11;
  cursor: pointer;
}