通过 JavaScript 方式注入
var link = document.createElement('link');
link.rel = 'stylesheet';
link.href = '//cdn.jsdelivr.net/npm/lxgw-wenkai-screen-web/style.css';
link.media = 'print';
link.onload = function() {
this.media = 'all';
};
var style = document.createElement('style');
style.innerHTML = '* { font-family: "LXGW WenKai Screen"; font-weight: normal; }';
var head = document.head || document.getElementsByTagName('head')[0];
head.appendChild(link);
head.appendChild(style);