/* 二级有序列表项目符号样式 */
@counter-style parenthesized-digit-number {
  system: fixed;
  symbols: ⑴ ⑵ ⑶ ⑷ ⑸ ⑹ ⑺ ⑻ ⑼ ⑽ ⑾ ⑿ ⒀ ⒁ ⒂ ⒃ ⒄ ⒅;
  suffix: " ";
}

.md-typeset ol ol {
  list-style: parenthesized-digit-number;
}