/* ===== 右上角时间 ===== */
#time {
  position: fixed;
  top: 24px;
  right: 12px;
  font-size: 0.85rem;
  color: var(--text-light);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", monospace;
  letter-spacing: 0.5px;
  opacity: var(--clock-opacity);
  z-index: 999;
  user-select: none;
}