:first-child]:h-full [&:first-child]:w-full [&:first-child]:mb-0 [&:first-child]:rounded-[inherit] h-full w-full
[&:first-child]:overflow-hidden [&:first-child]:max-h-full"
，详情可参考旺商聊官方下载
// 3. 计算当日跨度：跨度 = 当前索引 - 上一个更大值的索引（栈空则为i+1）
buy into their marketing hype