* {
    margin: 0;
    padding: 0;
}

.pattern {
    position: absolute;
    top: 0;
    width: 6.25%;
}

.pattern_left {
    right: 0;
}

.pattern_right {
    left: 0;
}

.pattern {
    width: 16%;
}

.phone_pic {
    display: block;
    width: 29.3%;
    margin: 32% auto 0;
}

.title {
    font-size: 4rem;
    font-family: '微软雅黑';
    line-height: 3;
    color: #333;
    text-align: center;
    padding-bottom: 8%;
}

.phone_down {
    font-size: 2.8rem;
    border: 1px solid #ccc;
    color: #333;
    line-height: 2.3;
    display: block;
    width: 50%;
    text-align: center;
    border-radius: 30px;
    margin: 0 auto;
    text-decoration: none;
}

.phone_down:active {
    color: #1a8cf7;
    border: 2px solid #1a8cf7;
}
#wx_launch {
    width: 492px;
    height: 105px;
    position: absolute;
    left: 50%;
    transform: translate(-50%);
}
#launch-btn {
    display: block;
    width: 100%;
    height: 100%;
    opacity: 0;
}
.shadow-app {
    position: fixed;
    top: 0;
    z-index: 999;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
}

.shadow-app>div {
    width: 80%;
    height: 10%;
    margin: 28.845rem auto;
    background: #fff;
    border-radius: 3.846rem;
    font-size: 3.846rem;
    text-align: center;
    padding: 3.846rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
}
.shadow-app>div img {
    width: 19.23075rem;
    position: absolute;
    top: -21.5385rem;
    right: 4.8075rem;
}
.shadow-app>div span {
    font-size: 5rem;
    font-weight: 700;
}
.yuan {
    display: inline-block;
    width: 0.9615rem;
    height: 0.9615rem;
    background: black;
    border-radius: 50%;
    margin: 0 0  0.9615rem 0.5765rem;
}