.article-cover{margin:28px 0 0;max-width:850px;aspect-ratio:1200/630}
.article-cover img{display:block;width:100%;height:auto;aspect-ratio:1200/630;object-fit:contain;border-radius:12px}
.guide-card .guide-art.guide-cover{aspect-ratio:1200/630;overflow:hidden}
.guide-card .guide-art.guide-cover:before,.guide-card .guide-art.guide-cover:after{display:none}
.guide-card .guide-cover img{display:block;width:100%;height:100%;object-fit:contain;aspect-ratio:1200/630}