html,body,#root{position:fixed;top:0;left:0;width:100%;height:100%;background:#241a1a}.htmlScreen iframe{width:950px;height:570px;border:none;position:fixed;background:#000;backface-visibility:hidden}.controls{position:fixed;left:16px;bottom:16px;display:flex;gap:8px;z-index:40}.controls button{background:#ffffff0f;color:#000;border:1px solid rgba(0,0,0,.12);padding:8px 12px;border-radius:6px;cursor:pointer}.controls button.active{background:#ffffff40;border-color:#ffffff4d;color:#fff;box-shadow:0 4px 15px #0003}@media(max-width:768px){.controls{bottom:24px;gap:8px;width:calc(100% - 32px);justify-content:center}.controls button{padding:12px 16px;font-size:13px;flex:1;max-width:120px}}