*,
*:after,
*:before {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    opacity: 1;
}

html,
body {
    margin: 0;
    padding: 0;
    background: #000;
    color: #fff;
}

img {
    width: 100%;
    animation: float-rotate 7s linear(0 0%, 0 1.8%, 0.01 3.6%, 0.03 6.35%, 0.07 9.1%, 0.13 11.4%, 0.19 13.4%, 0.27 15%, 0.34 16.1%, 0.54 18.35%, 0.66 20.6%, 0.72 22.4%, 0.77 24.6%, 0.81 27.3%, 0.85 30.4%, 0.88 35.1%, 0.92 40.6%, 0.94 47.2%, 0.96 55%, 0.98 64%, 0.99 74.4%, 1 86.4%, 1 100%) infinite;
}

a {
    text-decoration: none;
    cursor: pointer;
}

ul {
    padding: 0;
    margin: 0;
}

.row {
    display: block;
    margin-bottom: 10px;
}

.container {
    width: 90%;
    margin: 0 auto;
}

.pc_show {
    display: block;
}

.mobile_show {
    display: none;
}

.overlay {
    height: 0;
    position: fixed;
    z-index: 9999;
    top: 78vh;
    left: 0;
    bottom: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.8);
    overflow-y: hidden;
    transition: .5s;
}

.overlay-content {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
}


/*滚动条样式*/

*::-webkit-scrollbar {
    /*滚动条整体样式*/
    width: 2px;
    /*高宽分别对应横竖滚动条的尺寸*/
    height: 2px;
}

*::-webkit-scrollbar-thumb {
    /*滚动条里面小方块*/
    border-radius: 5px;
    -webkit-box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.2);
    background: rgba(0, 0, 0, 0.2);
}

*::-webkit-scrollbar-track {
    /*滚动条里面轨道*/
    -webkit-box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.2);
    border-radius: 0;
    background: rgba(0, 0, 0, 0.1);
}

@media (max-width: 738px) {
    .pc_show {
        display: none;
    }
    .mobile_show {
        display: block;
    }
    .overlay {
        height: 0;
        position: fixed;
        z-index: 9999;
        top: 0;
        left: 0;
        bottom: 0;
        right: 0;
        background-color: rgba(0, 0, 0, 0.8);
        overflow-y: hidden;
        transition: .5s;
    }
    .overlay-content {
        position: relative;
        width: 100%;
        height: 100%;
        text-align: center;
    }
}

.icon {
    width: 20px;
    height: 20px;
    background-position: center;
    background-size: contain;
    background-repeat: no-repeat;
    display: inline-block;
    vertical-align: middle;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.text-center {
    text-align: center;
}

.img-content {
    cursor: pointer;
}

.text-justify {
    text-align: justify;
}

.text-justify:after {
    content: '';
    width: 100%;
    display: inline-block;
    overflow: hidden;
    height: 0;
}

.c_orange {
    color: #f2ae35;
}

.c_pink {
    color: #e40c78;
}

.c_ddd {
    color: #ddd;
}

.c_blue {
    color: #2382c5;
}

.c_yellow {
    color: #d99e54;
}

.c_red {
    color: #e0615b;
}

.download_content {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    margin: 30px 0 20px;
}

.download_content .btn {
    width: 40%;
    max-width: 270px;
    height: 45px;
    line-height: 45px;
    text-align: center;
    margin: 7.5px 9px;
    border-radius: 35px;
    background: rgba(0,0,255,.3);
    color: #f6f806;
    font-size: 24px;
    cursor: pointer;
    position: relative;
    background: #f10e0e;
    font-weight: 900;
    box-shadow: 29px 29px 29px rgb(237 200 5 / 50%);
    animation: float-rotate 5s linear(0 0%, 0 1.8%, 0.01 3.6%, 0.03 6.35%, 0.07 9.1%, 0.13 11.4%, 0.19 13.4%, 0.27 15%, 0.34 16.1%, 0.54 18.35%, 0.66 20.6%, 0.72 22.4%, 0.77 24.6%, 0.81 27.3%, 0.85 30.4%, 0.88 35.1%, 0.92 40.6%, 0.94 47.2%, 0.96 55%, 0.98 64%, 0.99 74.4%, 1 86.4%, 1 100%) infinite;
}
.download_content .btn:hover {
    transform: skewX(30deg);
    transform: rotate(-5deg) scale(1.6);
    background-color: #000;
    animation-play-state: paused;
}
@keyframes float-rotate {
0% {
transform: rotate(10deg) translateY(0);
}
50% {
transform: rotate(320deg) translateY(-15px); /* 向上浮动15px */
}
100% {
transform: rotate(360deg) translateY(0);
}
}