body {

    /* background-color: #BDC2CC; */
    background-color: rgb(229, 229, 229);
}

.download-btn {
    display: flex;
    justify-content: space-around;
}

.android-btn,
.ios-btn {
    width: 40%;
    height: 4vh;
    margin-top: 5%;
    border: 1px solid #000000;
    text-align: center;
    line-height: 4vh;
}

a {
    cursor: pointer;
    color: inherit;
    /* 继承父元素的文本颜色 */
}

.product-info {
    margin-top: 5vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    font-size: 20px;
    font-weight: 500;
    height: 10vh;
}

.product-img {
    width: 90%;
    margin: 5% auto;
    margin-top:80px;
}

.product-img img {
    width: 100%;
    height: 100%;
}

#container {
    width: 80%;
    margin: 0 auto;
}

/* #content {
    margin-top: 50px;
} */


.child-title {
    margin-top: 4%;
    height: 4vh;
    padding-left: 3%;
    line-height: 4vh;
    background-color: #d7d6d8;
    font-size: 13px;
}

/* 目录样式 */
.toc {
    /* max-height: 200px;
    overflow-y: auto; */
    position: fixed;
    top: 400px;
    left: 0;
    transform: translateY(-50%);
    background-color: #FFFFFF;
    padding: 10px;
    color: #000000;
    font-size: 13px;
    line-height: 30px;
    opacity: 0.9;
    /* padding-left: 20px; */
}

.toc ul {
    list-style-type: none;
    padding: 0;
}

.toc li {
    margin-bottom: 5px;
}

.toc a {
    text-decoration: none;
    color: #000000;
}

.change2 {
    width: 30px;
    font-size: 13px;
}
.change1{
    padding-left: 5px;
    padding-right: 5px;
}

#sectionA,
#section1,
#section2,
#section3,
#section4,
#section5,
#section6,
#section7,
#section8,
#section9 {
    /* padding-top: 60px; */
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
}

.title1,
.content,
.info {
    width: 100%;
}

.title1 {
    height: 40px;
    background-color: #000000;
    color: #FFFFFF;
    display: flex;
    justify-content: left;
    align-items: center;
    font-weight: 200;
}

.content {
    height: 100%;
}

.info {
    height: 40px;
}

.num {
    font-size: 16px;
    width: 25px;
    height: 25px;
    border-radius: 100%;
    border: 1px solid #FFFFFF;
    text-align: center;
    margin-left: 10px;
    margin-right: 10px;
    line-height: 25px;
}

.info {
    line-height: 40px;
    font-weight: 300;
    font-size: 15px;
}
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5); /* 半透明黑色背景 */
    display: flex;
  }
  
  .message-box {
    width: 100%;
    color: white; /* 字体颜色白色 */
    font-size: 32px; /* 字体大小调整为24像素 */
    padding: 20px;
    padding-top: 20vh;
    text-align: center;
    background-color: transparent; /* 透明背景 */
  }
  
  .icon{
    position: absolute;
    right: 0px;
    height: 20%;
  }
  #customAlert{
    display: flex;
    width: 50%;
    height:40px;
    position: fixed;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.5);
    color: #fff;
    text-align: center;
    line-height: 40px;
}