*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    font-family: PingFang SC;
    font-weight: 700;
}
.footer{
    height: 70px;
    background: black;
    color: white;
    display: flex;
    justify-content: center;
}
.footer-txt{
    font-size: 13px;
    text-align: center;
    width: 100%;
    line-height: 20px;
    font-weight: 400;
}
.footer a{
    color: white;
    text-decoration: none;
    display: block;
}
.content{
    background-image: url("../background.png");
    background-size: 100% 100%;
    min-height: calc(100vh - 70px);
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}
.content-body{
    display: flex;
    justify-content: space-between;
    flex-direction: row;
    color: white;
    min-height: 60vh;
    width: 60%;
}
.left-section, .right-section{
    display: flex;
    justify-content: center;
    align-items: center;
}
.left-section{
    flex-basis: 40%;
    flex-direction: column;
    justify-content: center;
    gap: 5%;
}
.right-section{
    flex-basis: 60%;
    justify-content: flex-end;
}
button{
    display: inline-block;
    width: 50%;
    cursor: pointer;
    line-height: 40px;
    border-radius: 28px;
    background-color: #f0082e;
    color: white;
    font-size: 20px;
    font-weight: 800;
}

.title-text{
    font-size: 36px;
    display: block;
}
.subtitle-text{
    font-size: 14px;
}
.download-bg{
    background-image: url("../download.png");
    width: 260px;
    height: 333px;
    padding-left: 13%;
    padding-bottom: 20%;
    padding-right: 14.3%;
    padding-top: 10%;
    text-align: center;
    background-size: 100% 100%;
    z-index: 120;
    position: relative;
    text-align: center;
    font-size: 13px;
}
.download-bg img{
    width: 100%;
    margin-top: 10px;
}
.right-section #phone-image{
    width: 15vw;
}
.phone-txt{
    text-align: center;
}
.top-btn-switch{
    display: flex;
    cursor: pointer;
}
.top-btn-switch div{
    color: #aaa;
    border-bottom: solid #2c3e50;
    width: 100px;
    text-align: center;
    padding-bottom: 15px;
}
.top-btn-switch div.active{
    display: inline-block;
    border-bottom: solid red;
    width: 100px;
    text-align: center;
    padding-bottom: 15px;
    color: white;
}
img{
    width: 100%;
}
#spin {
    color: rgb(255, 255, 255);
    font-family: "Nunito", sans-serif;
    font-size: clamp(16px, 7vw, 24px)
}
#spin:after {
    content:"";
    animation: spin 4s linear infinite;
}
@keyframes spin {
    from{content: "足篮比分 一网打尽";}
    to{content: "专家预测，收米快人一步";}
}

.barcode-section{
    position: relative;
}
.back{
    position: absolute;
    top: -100px;
    left: 50px;
    width: 240px!important;
    height: 162px!important;
    z-index: 99;
}
.download2 {
    display: none;
}
@media screen and (max-width:768px){
    .content-body{
        flex-direction: column;
        width: 90%;
        gap: 15px;
    }
    .right-section{
        justify-content: center;
    }
    .left-section{
        flex-basis: initial;
        justify-content: space-around;
        height: 400px;
    }
    .download-bg{
        display: none;
    }
    .right-section #phone-image{
        width: 70%;
    }
    .footer{
        display: none;
    }
    .barcode-section{
        display: none;
    }
    .download2 {
        position: fixed;
        display: flex;
        bottom: 0;
        cursor: pointer;
    }
    .content{
        margin-bottom: 44px;
    }
}