:root{background:#0a1a2a;color:#fff;color-scheme:dark;font-family:Poppins,Arial,sans-serif}*{box-sizing:border-box}body{margin:0}.lab-player{background:#0a1a2a;min-height:100svh;padding:16px}.lab-player h1{color:#47a4fb;font-size:42px;font-weight:500;line-height:1.2;margin:0 0 12px}.lab-player__layout{display:grid;gap:12px;grid-template-columns:280px minmax(0,1fr);min-height:calc(100svh - 95px)}.lab-player__sidebar{display:flex;flex-direction:column;gap:8px;padding:8px 0}.lab-player h2{font-size:12px;font-weight:600;margin:0 8px}.lab-player nav{display:grid;gap:16px}.lab-player__lesson{align-items:center;background:transparent;border:1px solid #203e51;border-radius:12px;color:#fff;cursor:pointer;display:flex;font:inherit;gap:8px;padding:12px;text-align:left;width:100%}.lab-player__lesson:hover,.lab-player__lesson[aria-current=true]{background:#152d42}.lab-player__lesson>span:first-child{flex:1;min-width:0}.lab-player__lesson strong{color:#47a4fb;display:block;font-size:12px;margin-bottom:4px;text-transform:uppercase}.lab-player__lesson span span{display:block;font-size:12px;line-height:1.5}.lab-player__play{align-items:center;border:1px solid #8cd3ff;border-radius:50%;display:flex;flex-shrink:0;height:32px;justify-content:center;width:32px}.lab-player__lesson[aria-current=true] .lab-player__play{background:#47a4fb;border-color:#47a4fb}.lab-player__link{background:#47a4fb;border-radius:13px;color:#fff;font-size:12px;font-weight:600;gap:4px;margin-top:auto;padding:8px 20px;text-decoration:none}.lab-player__link,.lab-player__stage{align-items:center;display:flex;justify-content:center}.lab-player__stage{border:2px solid #203e51;border-radius:20px;flex-direction:column;min-width:0;overflow:hidden;padding:6px}.lab-player__stage iframe{background:#000;border:0;border-radius:14px;flex:1;min-height:400px;width:100%}.lab-player__stage p{padding:16px}.lab-player a:focus-visible,.lab-player button:focus-visible{outline:2px solid #8cd3ff;outline-offset:3px}@media (max-width:700px){.lab-player h1{font-size:30px}.lab-player__layout{display:flex;flex-direction:column-reverse;min-height:0}.lab-player__stage iframe{aspect-ratio:16/9;flex:auto;min-height:0}.lab-player__sidebar{gap:12px}.lab-player__link{margin-top:8px}}