.portal-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:40px;margin-top:80px}.dimension-features span::before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,0,0,.1),transparent);transition:left .5s ease}.portal-card:hover .dimension-features span{background:rgba(255,0,0,.12);border-color:rgba(255,0,0,.25);transform:translateY(-2px)}.portal-card:hover .dimension-features span::before{left:100%}.portal-card:hover{background:rgba(255,255,255,.05)}.portal-card:hover .card-icon{box-shadow:0 8px 24px rgba(255,0,0,.3)}@media (max-width:768px){.portal-grid{grid-template-columns:1fr;gap:30px;margin-top:40px}.portal-card{padding:30px 20px}.card-portal{width:60px;height:60px}.portal-gate{width:60px;height:60px}.portal-energy{width:40px;height:40px}.dimension-icon{width:50px;height:50px;font-size:20px}.portal-card h3{font-size:1.4rem}.activation-button{padding:18px 40px;font-size:1.1rem}}