.nav-group{margin:2px 0}
.nav-group summary{list-style:none;color:#b8c8d3;padding:12px 14px;border-radius:8px;cursor:pointer;position:relative}
.nav-group summary::-webkit-details-marker{display:none}
.nav-group summary:after{content:'›';position:absolute;right:14px;transition:transform .15s}
.nav-group[open] summary:after{transform:rotate(90deg)}
.nav-group summary:hover,.nav-group summary.active{background:#12334a;color:#fff}
.nav-group div{padding:2px 0 4px 12px;border-left:1px solid #29485e;margin-left:14px}
.nav-group button.sub{padding:9px 12px;font-size:13px}
@media(max-width:900px){.nav-group summary{font-size:0}.nav-group summary:before{content:'•';font-size:22px}.nav-group summary:after,.nav-group div{display:none}}