._shell_1llzz_1{z-index:75;isolation:isolate;background:#232323;flex-direction:column;display:flex;position:fixed;inset:0}._shell_1llzz_1 iframe{border:0;flex:1;width:100%;height:100%;min-height:0;display:block}._bar_1llzz_3{display:none}._docked_1llzz_4{border:1px solid #52525a;border-radius:14px;width:min(360px,100vw - 24px);height:300px;inset:auto 12px 12px auto;overflow:hidden;box-shadow:0 8px 40px #0006}._docked_1llzz_4 ._bar_1llzz_3{color:#fff;background:#303034;flex-shrink:0;justify-content:space-between;align-items:center;gap:8px;padding:6px 8px;display:flex}._bar_1llzz_3 button{color:#fff;font:inherit;cursor:pointer;background:#45434d;border:0;border-radius:7px;padding:6px 10px;font-size:12px}._bar_1llzz_3 button:last-child{background:#8b303f}@media (max-width:600px){._docked_1llzz_4{height:250px;bottom:82px}}._docked_1llzz_4 ._bar_1llzz_3{box-sizing:border-box;height:38px}._docked_1llzz_4 iframe{flex:none;height:260px}._collapsed_1llzz_10{height:40px}._collapsed_1llzz_10 iframe{position:absolute;top:38px;left:0}._collapsed_1llzz_10 ._bar_1llzz_3{z-index:1;position:relative}@media (max-width:600px){._docked_1llzz_4 iframe{height:210px}._collapsed_1llzz_10{height:40px}}._shell_1llzz_1:not(._docked_1llzz_4){top:var(--lesson-visible-top,0px);height:var(--lesson-visible-height,100dvh);max-width:100vw;min-height:0;bottom:auto}._shell_1llzz_1:not(._docked_1llzz_4)>iframe{flex:1 1 0;width:100%;min-width:0;max-width:none;height:100%;min-height:0}