/* 在原有 footer 下方注入备案号 */
#beian-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  text-align: center;
  padding: 6px 0 8px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
  background: rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(4px);
  z-index: 999;
  letter-spacing: 0.5px;
}

#beian-footer a {
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  margin: 0 8px;
  transition: color 0.2s;
}

#beian-footer a:hover {
  color: rgba(255, 255, 255, 0.9);
}