:root{--nav-h: 0px}html,body{height:100%;margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif}#three-container{position:relative;width:100vw;height:100vh;overflow:hidden;background:#111}canvas{display:block;width:100%;height:100%}.popup-wrapper{position:fixed;bottom:20px;right:20px;z-index:1000}.popup-window{background:#fff;border-radius:12px;box-shadow:0 10px 40px #00000026;max-width:500px;width:90vw;animation:slideUp .4s ease-out;transition:opacity .3s ease,transform .3s ease}.popup-window.collapsed{display:none}.popup-header{padding:20px 24px;border-bottom:1px solid #f0f0f0;display:flex;justify-content:space-between;align-items:center}.popup-title{font-size:16px;font-weight:600;color:#333}.popup-content{padding:24px}.popup-text{font-size:14px;line-height:1.6;color:#333;margin:0 0 16px}.close-button{background:#667fea;color:#fff;border:none;padding:10px 24px;border-radius:6px;font-size:14px;font-weight:600;cursor:pointer;transition:background .3s ease;width:100%}.close-button:hover{background:#5568d3}.close-button:active{transform:scale(.98)}.open-button{width:60px;height:60px;background:#667eea;border-radius:50%;border:none;cursor:pointer;box-shadow:0 4px 12px #667eea66;display:none;align-items:center;justify-content:center;font-size:24px;transition:all .3s ease}.open-button:hover{background:#5568d3;box-shadow:0 6px 16px #667eea99}.open-button.show{display:flex}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}