body{font-family:system-ui,sans-serif;background:#f8f9fa;}
/* 波色圆球 */
.ball{width:28px;height:28px;line-height:28px;border-radius:50%;display:inline-block;text-align:center;color:#fff;font-size:12px;font-weight:600;margin:2px;}
.red{background:#e74c3c;} .blue{background:#3498db;} .green{background:#27ae60;}
.grid {
  display: none !important;
}