响应式卡片列表与 Dashboard | CSS
本章覆盖：CSS Grid；repeat / minmax；auto-fit；Flex inside card；aspect-ratio；object-fit；gap；clamp typography；responsive without excessive breakpoints；card container query；skeleton / loading visual state；long text / overflow 验收。
本章知识点
- CSS Grid
- repeat / minmax
- auto-fit
- Flex inside card
- aspect-ratio
- object-fit
- gap
- clamp typography
- responsive without excessive breakpoints
- card container query
- skeleton / loading visual state
- long text / overflow 验收