/* 弹窗 */
.modal {
  display: none;
  position: fixed;
  z-index: 999;
  left: 0; top: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.5);
}
.modal-content {
  background: var(--panel);
  margin: 8% auto;
  padding: 24px;
  width: 600px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  color: var(--text);
}
.close-modal {
  float: right;
  font-size: 22px;
  cursor: pointer;
  color: var(--text-light);
}