*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;height:100%;background:#000;color:#fff;font-family:system-ui,-apple-system,sans-serif}
body{overflow:hidden}
.lab-bar{position:fixed;inset:0 0 auto 0;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:14px 18px;pointer-events:none}
.lab-bar > *{pointer-events:auto}
.menu-btn{appearance:none;border:1px solid rgba(255,255,255,.35);background:rgba(0,0,0,.85);color:#fff;padding:8px 14px;font-size:13px;letter-spacing:.12em;text-transform:uppercase;cursor:pointer}
.menu-btn:hover{border-color:#fff}
.lab-tag{font-size:11px;letter-spacing:.14em;text-transform:uppercase;opacity:.5}
.menu-panel{position:fixed;inset:0 auto auto 0;z-index:30;margin:56px 12px 0;padding:14px 16px;background:rgba(0,0,0,.95);border:1px solid rgba(255,255,255,.2);display:flex;flex-direction:column;gap:12px;min-width:180px}
.menu-panel[hidden]{display:none}
.menu-panel a{color:#fff;text-decoration:none;letter-spacing:.08em;text-transform:uppercase;font-size:14px}
.menu-panel a:hover{opacity:.65}
.stage{position:fixed;inset:0;touch-action:none;cursor:none;user-select:none;background:#000}
#scrub{position:absolute;inset:0;width:100%;height:100%;display:block}

@media (max-width:700px){
  .lab-tag{display:none}
  .stage{cursor:auto}
}