如何更换自定义字体

[Infinity4B]

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Issue Checklist

• [x] I am using the latest version of NexT.
• [x] I have read the relevant documents of Hexo and NexT.
• [x] I have reviewed the latest Roadmap on GitHub and searched for current issues, which does not help me.

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你们的doc好像被删掉了，目前没有实际的操作提示。我想要更换自定义字体，比如说有了cdn地址，应该如何操作？

[welcome[bot]]

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