body{font-weight:300}#musicWrapper{position:fixed!important;bottom:20px!important;right:20px!important;z-index:999999!important}#musicBtn{background:#e74c3c;color:#fff;padding:10px 18px;border:none;border-radius:25px;font-size:14px;cursor:pointer;box-shadow:0 6px 12px rgba(0,0,0,0.3)}#curtain{position:fixed;inset:0;display:flex;pointer-events:none;z-index:99999}.left-curtain,.right-curtain{width:50%;height:100%;background:#8B0000;transition:transform 0.6s ease}.left-curtain{transform:translateX(-100%)}.right-curtain{transform:translateX(100%)}#curtain.active .left-curtain,#curtain.active .right-curtain{transform:translateX(0)}