/* 通用样式 - 统一正文宽度为85% */
.column.is-85-percent {
  flex: none;
  width: 85%;
}

/* 移除公式框样式 */
.equation-block {
  margin: 1rem 0;
  text-align: center;
  background: none !important;
  padding: 0 !important;
  border: none !important;
  border-radius: 0 !important;
}