.card-skeleton{width:320px;height:448px;background:rgba(31,41,55,.4);border-radius:12px;border:1px solid rgba(107,114,128,.2);position:relative;overflow:hidden}.card-skeleton:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.08),transparent);animation:shimmer 2s infinite}@keyframes shimmer{0%{left:-100%}to{left:100%}}@media (max-width:640px){.card-skeleton{width:100%;max-width:320px}}