.robo-kiden-bg{background:linear-gradient(135deg,#0a1c3f,#1e3a6b 50%,#0a1c3f);position:relative;overflow:hidden}.robo-kiden-bg:before{background:radial-gradient(circle at 20% 30%,rgba(255,100,84,.2) 0,transparent 30%),radial-gradient(circle at 80% 70%,rgba(87,180,255,.2) 0,transparent 30%)}.robo-kiden-bg:after,.robo-kiden-bg:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;z-index:0}.robo-kiden-bg:after{background-size:cover;opacity:.05}.content-container{position:relative;z-index:1}.card-bg{background-color:rgba(255,255,255,.08);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.1)}.card-bg-active{background-color:rgba(255,255,255,.12);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.15)}