Qualifier-focused (Pascal family) has specific keywords/qualifiers/specifiers for declarations
:first-child]:h-full [&:first-child]:w-full [&:first-child]:mb-0 [&:first-child]:rounded-[inherit] h-full w-full，更多细节参见电影
，详情可参考PDF资料
self._value = new_value，这一点在快连下载中也有详细论述
init → plan → apply cycle. Here’s the full landscape: