.feature-card{background:rgba(0,0,0,.6);border:1px solid hsla(0,0%,100%,.1);border-radius:1rem;padding:2rem;transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.feature-card:before{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:linear-gradient(180deg,#f59e0b,#f59e0b);opacity:0;transition:opacity .3s ease}.feature-card:hover{background:rgba(0,0,0,.8);border-color:rgba(245,158,11,.5);transform:translateY(-5px);box-shadow:0 10px 30px rgba(0,0,0,.3)}.feature-card:hover:before{opacity:1}.feature-delay-1{transition-delay:.1s}.feature-delay-2{transition-delay:.2s}.feature-delay-3{transition-delay:.3s}