html{width:100%;overflow-x:hidden}body{width:100%;min-width:0;margin:0;overflow-x:hidden;-webkit-text-size-adjust:100%;touch-action:manipulation}*,*:before,*:after{box-sizing:border-box}img,video,canvas,svg{max-width:100%}button,input,select,textarea{max-width:100%;touch-action:manipulation}a,[role=button]{touch-action:manipulation}body.embed-mode{background:#fff;overflow-x:hidden}.loading-spinner{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);z-index:1050}.loading-spinner:after{content:"";display:inline-block;width:40px;height:40px;border:4px solid #ccc;border-top-color:#007bff;border-radius:50%;animation:spin 1s linear infinite}.chess-tabs{padding-top:1rem;padding-bottom:.5rem}.section-content{width:min(100%,1400px);box-sizing:border-box;margin:0 auto;padding:1.5rem 1rem 2rem}@media (max-width: 768px){.section-content{padding:.85rem .55rem 1.25rem}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}