body{
        background-image: url("../img/img_margin_bg.png");
        background-repeat: repeat;
        background-size: auto;
    }
    .login_but{
        width: 100%;
        height: 80%;
        background-color: #F69;
        background-color: #F69;
        color: #ffffff;
        border: 1px solid #ffffff;
        text-align: center;
        border-radius: 10px;
        margin-top: 6vh;
    }
    .login_but span{
        font-size: calc(1vw + 4px);
    }
    .modal-content{
        background-image: url('../img/bg_common.png');
        background-repeat: no-repeat;
        background-size: contain;
        background-position: center;
        background-size: 100% 100%;
        color: #fff;
        width:67%;
        height: 30%;
        margin: 0 auto;
        background-color: rgba(255, 255, 255, 0.1);
    }
    .modal-header, .modal-body, .modal-footer{
        border: 0;
        text-align: center;
        //font-weight: bolder;
    }
    .modal-header{
        //margin-bottom:10%;
    }
    .modal-header span{
        font-size: clamp(14px,calc(1vw ),20px);
    }
    .modal-footer{
        padding-bottom: 10%;
    }
    .modal-footer button{
        float: left;
        width: 34%;
        height: 10%;
        margin-left: 10%;
        color: #000;
        border-radius:10px;
        font-size: clamp(12px,calc(1vw ),16px);

    }
    .modal-body{
        font-size: clamp(12px,calc(1vw ),20px);
    }
    .custom-centered-modal .modal-dialog {
      position: fixed;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%) !important;
      margin: 0;
    }

    #main-content { display: block; }
    #landscape-warning {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: rgba(0,0,0,0.9);
        color: white;
        z-index: 9999;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }
    /* 禁止提示层内的滚动 */
    #landscape-warning * {
        pointer-events: auto; /* 允许点击关闭按钮 */
    }
    #landscape-warning .content {
        pointer-events: none; /* 内容区域不可点击 */
    }