*{box-sizing:border-box;margin:0;padding:0}body{background-color:#fff;color:#333;min-height:100dvh;display:flex;flex-direction:column;align-items:center}header{width:100%;background-color:#43c891;color:#fff;font-size:1.5em;font-weight:700;padding:16px;text-align:center}button{display:block;width:100%;padding:16px;background:#43c891;color:#fff;font-size:16px;font-weight:700;border:none;border-radius:12px;cursor:pointer;letter-spacing:.06em;transition:background .2s,transform .1s;-webkit-tap-highlight-color:transparent}button:active{background:#43c891cc;transform:scale(.98)}.container{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;width:90%;max-width:400px}.loader{border:5px solid #e0e0e0;border-top:5px solid #404040;border-radius:50%;width:120px;height:120px;animation:spin 1s linear infinite;margin-bottom:20px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-text{font-size:24px;color:#444;font-weight:500}