.platform-header{overflow:visible}.platform-header-frost{z-index:0;pointer-events:none;transition:backdrop-filter .4s var(--ease-glass);position:absolute;inset:0;-webkit-mask-image:radial-gradient(80% 45% at 50% 100%,#000 0%,#0000 80%);mask-image:radial-gradient(80% 45% at 50% 100%,#000 0%,#0000 80%)}.platform-header-tint{z-index:0;pointer-events:none;background:var(--color-bg);position:absolute;inset:0;-webkit-mask-image:radial-gradient(65% 34% at 50% 100%,#0000 0%,#000 88%);mask-image:radial-gradient(65% 34% at 50% 100%,#0000 0%,#000 88%)}.platform-header-shell{z-index:1;position:relative}@keyframes platform-header-menu-drop{0%{transform:translateY(-100%)}to{transform:translateY(0)}}@keyframes platform-header-menu-fade{0%{opacity:0}to{opacity:1}}.platform-header-menu-mask{animation:.2s ease-out both platform-header-menu-fade}.platform-header-menu-mask.is-leaving{animation:.2s ease-out reverse both platform-header-menu-fade}.platform-header-menu-panel{animation:.2s ease-out both platform-header-menu-drop}.platform-header-menu-panel.is-leaving{animation:.2s ease-out reverse both platform-header-menu-drop}