.a4-swiper{max-width:500px;padding-bottom:30px;width:100%}.a4-frame{aspect-ratio:1/1.414;background-color:#f0f0f0;box-shadow:0 4px 10px rgba(0,0,0,.15);overflow:hidden;width:100%}.a4-frame img{cursor:zoom-in;height:100%;object-fit:cover;width:100%}.a4-caption{color:#333;font-weight:600;margin-top:10px;text-align:center}