.adv.sky{--rim:0 0 0 5px #fff9,0 0 0 6px #b7a2ff80,0 30px 70px -30px #7552fe80}.adv.sky .btn-dark{background:linear-gradient(180deg,#8c70ff,var(--purple));color:#fff;border-color:#0000;box-shadow:inset 0 1px #ffffff4d,inset 0 -1px #2f216640,0 10px 24px -10px #7552febf}.adv.sky .btn-dark:hover{background:linear-gradient(#9a80ff,#6a47f5)}.adv.sky .form{box-shadow:var(--rim)}