*{margin:0;padding:0;box-sizing:border-box;font-family:Be Vietnam,sans-serif}html{overflow:hidden;width:100%;height:100%}body{overflow:hidden;width:100%;height:100%;background:linear-gradient(to bottom,#fff,#9e9e9e,#fff)}#webgl{display:block;width:100%;height:100%}#click-counter{position:absolute;background-color:#fff;border-radius:8px;padding:10px;top:50px;left:50%;transform:translate(-50%);font-weight:700;font-size:1.5rem}.heart-button{position:absolute;bottom:50px;left:50%;transform:translate(-50%);width:100px;height:100px;background-color:#fff;border:none;border-radius:50%;box-shadow:0 4px 10px #0003;cursor:pointer;display:flex;justify-content:center;align-items:center;padding:0;transition:transform .2s ease}.heart-button:hover{transform:translate(-50%) scale(1.05)}.heart-icon-btn{width:50px;height:50px;fill:none;transition:fill 2s ease-in-out;transform-origin:center;fill:#f36}.heart-icon-btn.filled{fill:#f36;transition:fill 2s ease-in-out}.heart-icon-btn.beat{animation:heart-beat .25s ease}@keyframes heart-beat{0%{transform:scale(1)}50%{transform:scale(1.3)}to{transform:scale(1)}}