.up-news-cover{display:block;width:100%;max-width:100%;height:auto;aspect-ratio:16/9;object-fit:contain;object-position:center;border-radius:10px;margin-bottom:16px;background:var(--up-paper,var(--cp-surface));}
.up-news-cover-detail{aspect-ratio:auto;max-height:min(70svh,560px);}
.up-course-cover img{object-fit:contain;object-position:center;max-width:100%;}
.up-media video[poster]{aspect-ratio:16/9;object-fit:contain;}
.cp-cover-editor{min-width:0;max-width:100%;}
.cp-cover-editor img{display:block;width:min(100%,420px);max-width:100%;height:auto;aspect-ratio:16/9;object-fit:contain;object-position:center;background:var(--cp-bg,#f4f6fa);}
.cp-cover-editor .cp-field{min-width:0;}
.cp-cover-editor input[type=file]{width:100%;min-width:0;max-width:100%;box-sizing:border-box;}
.cp-news-grid{grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));}