html,body{margin:0;padding:0}.loading-container{position:fixed;left:0;top:0;width:100%;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;background:#fff;font-family:Arial,Helvetica,sans-serif}.logo{font-size:28px;font-weight:700;margin-bottom:30px}.status{font-size:16px;color:#666;margin-bottom:20px}.progress-box{width:320px;height:10px;background:#e5e5e5;border-radius:20px;overflow:hidden}.progress-bar{height:100%;width:0;background:#2196f3;transition:width .3s ease}.percent{margin-top:15px;font-size:24px;font-weight:700;color:#2196f3}