关于注音符号的一些疑问

Regarding Bopomofo (Zhuyin) symbols, there are several questions from the CSS Working Group. Let's see if we can address them and whether they need to be covered in the clreq document:

1. What should be done if the actual content exceeds the expected limit of "at most 3 characters plus 1 tone mark"?
2. How should Bopomofo be handled where the font sizes of individual characters within the sequence are inconsistent?
3. What should be done if the content includes characters other than Bopomofo symbols?
4. Is the Bopomofo layout logic described in the clreq a universally accepted, solely authoritative, layout standard, or is it a simplified or compromise solution derived from balancing various considerations?

关于注音符号，来自CSS工作组的一些疑问，看看我们是否可以解答，以及是否需要在文档里提及。

1. 如果实际内容超出了预期的“最多 3 个字符 + 1 个声调符号”的限制，该怎么办？
2. 如果其中某些字符的字号不一致，该如何处理？
3. 如果内容中还夹杂着非注音符号的字符，该怎么办？
4. 《中文排版需求》中描述的注音符号排版逻辑，是通用的“唯一正统”排版逻辑，还是综合各方考量后得出的简化或折衷方案？