:root
{
    --bg-posX: 0px;
    --bg-posY: 0px;  
}

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

html
{
    width: 100%;
    height: 100vh;
    background-color: rgb(201, 201, 201);

    overflow: hidden;
}
html::before
{
    content: '';
    width: 100%;
    height: 100%;
    position: absolute;
    z-index: -1;

    background: url(../img/lmgzsgo.png)no-repeat center;
    background-size: cover;
    background-attachment: fixed;
    filter: brightness(70%);
    /* backdrop-filter: blur(3px); */

    /* 变形 放大 */
    transform: scale(1.1);
    
    background-position: var(--bg-posX) var(--bg-posY);
}

body
{
    width: 100%;
    height: 100%;

    display: flex;
}

#shell
{
    width: 90%;
    height: 90%;

    margin: auto;

    display: flex;
}

#shell #btn
{
    margin: auto;

    /* border: none; */
    color: #fff;
    background-image: linear-gradient(30deg, #0400ff, #4ce3f7);
    border-radius: 20px;
    background-size: 100% auto;
    font-family: inherit;
    font-size: 17px;
    padding: 0.6em 1.5em;

    background-position: right center;
    background-size: 200% auto;
    -webkit-animation: pulse 2s infinite;
    animation: pulse512 1.5s infinite;
}

@keyframes pulse512
{
    0% {
        box-shadow: 0 0 0 0 #05bada66;
    }

    70% {
        box-shadow: 0 0 0 10px rgb(218 103 68 / 0%);
    }

    100% {
        box-shadow: 0 0 0 0 rgb(218 103 68 / 0%);
    }
}

/* 按钮和文字垂直居中排列 */
.content-wrapper {
    margin: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px; /* 按钮和文字之间的间距 */
}

/* 提示文字样式 */
#msg {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    font-family: sans-serif;
}