functions.php
// 全部配置完毕
// 全部配置完毕
////为TinyMCE编辑器增加中文字体
function custum_fontfamily($initArray){
	$initArray['font_formats'] = "微软雅黑='微软雅黑';宋体='宋体';黑体='黑体';仿宋='仿宋';楷体='楷体';隶书='隶书';幼圆='幼圆';Andale Mono=andale mono,times;Arial=arial,helvetica,sans-serif;Arial Black=arial black,avant garde;Book Antiqua=book antiqua,palatino;Comic Sans MS=comic sans ms,sans-serif;Courier New=courier new,courier;Georgia=georgia,palatino;Helvetica=helvetica;Impact=impact,chicago;Symbol=symbol;Tahoma=tahoma,arial,helvetica,sans-serif;Terminal=terminal,monaco;Times New Roman=times new roman,times;Trebuchet MS=trebuchet ms,geneva;Verdana=verdana,geneva;Webdings=webdings;Wingdings=wingdings,zapf dingbats";
	return $initArray;
}
add_filter('tiny_mce_before_init', 'custum_fontfamily');

额外ccs
/* 首行缩进 */
p {
    text-indent: 2em;
}
/* 避免图片被缩进（可选） */
p img {
  display: block;
  margin: 10px auto;
  max-width: 100%;
  height: auto;
}

/* 调整标题行间距 */
h1,.h1,
h2,.h2,
h3,.h3,
h4,.h4,
h5,.h5,
h6,.h6 {
	color: inherit;
  font-weight: 500;
  line-height: 1.2;
	margin: 0 0 0.2em;
}

h1,.h1,
h2,.h2 {
	font-size: 1.6rem;
}
h3,.h3,
h4,.h4,
h5,.h5,
h6,.h6 {
	font-size: 1rem;
}

/* 调整段前间距 */
p {
  margin: 0 0 0.3em;
}

/* 去除标题的下划线效果 */
body .layout .article-content :is(h1, h2, h3, h4, h5, h6) {
  width: auto;
  display: inline;
  box-shadow: 0 0 0 rgba(188, 195, 206, 0.3) inset;
}

/* 去除加粗的下划线效果 */
body .layout .article-content > p strong, body .layout .article-content > p b {
  box-shadow: 0 0 0 rgba(255, 0, 0, 0.3) inset;
}

/* 空格“ ” */