*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
    background:#0b1624;
    color:#fff;
    overflow:hidden;
}

/* 背景 */

.bg{
    position:fixed;
    left:0;
    top:0;
    width:100%;
    height:100%;
    background:url("/img/welcome-bg.jpg") center center/cover no-repeat;
    opacity:.25;
    filter:blur(4px);
    transform:scale(1.08);
    z-index:-1;
}

.mask{
    position:fixed;
    left:0;
    top:0;
    width:100%;
    height:100%;
    background:rgba(5,15,30,.62);
    z-index:-2;
}

.container{
    min-height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
    padding:20px;
}

.card{
    width:100%;
    max-width:520px;

    background:rgba(255,255,255,.08);
    backdrop-filter:blur(16px);

    border:1px solid rgba(255,255,255,.1);

    border-radius:24px;

    padding:45px 30px;

    text-align:center;
}

/* icon */

.icon-box{
    width:120px;
    height:120px;

    margin:0 auto 30px;

    border-radius:50%;

    background:rgba(74,163,255,.12);
    border:1px solid rgba(74,163,255,.25);

    display:flex;
    justify-content:center;
    align-items:center;

    position:relative;
}

.icon{
    font-size:56px;
}

.gear{
    position:absolute;
    right:18px;
    bottom:18px;

    width:38px;
    height:38px;

    border-radius:50%;

    background:#4aa3ff;

    display:flex;
    justify-content:center;
    align-items:center;

    font-size:18px;

    animation:rotate 4s linear infinite;
}

@keyframes rotate{
    from{
        transform:rotate(0deg);
    }
    to{
        transform:rotate(360deg);
    }
}

.title{
    font-size:30px;
    font-weight:600;
    margin-bottom:15px;
}

.desc{
    color:#c6d0dc;
    line-height:1.9;
    font-size:15px;
}

.notice{
    margin-top:28px;

    background:rgba(255,255,255,.05);

    border-radius:14px;

    padding:18px;

    color:#d6dde7;

    line-height:1.9;
    font-size:14px;
}

.notice strong{
    color:#4aa3ff;
}

.btn-group{
    margin-top:30px;
    display:flex;
    gap:15px;
}

.btn{
    flex:1;

    height:48px;
    line-height:48px;

    border-radius:25px;

    text-decoration:none;

    transition:.3s;
}

.btn-primary{
    background:#4aa3ff;
    color:#fff;
}

.btn-primary:hover{
    background:#3294ff;
}

.btn-default{
    border:1px solid rgba(255,255,255,.15);
    color:#fff;
}

.btn-default:hover{
    background:rgba(255,255,255,.08);
}

.footer{
    margin-top:30px;
    color:#8ea0b5;
    font-size:13px;
}

@media(max-width:480px){

    .btn-group{
        flex-direction:column;
    }

}