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

body, html {
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: "Helvetica Neue",Helvetica,"PingFang SC","Open Sans","Inter","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
}

body {
    min-width: 320px;
}

.mb-40 {
    margin-bottom: 40px;
}
.mb-16 {
    margin-bottom: 16px;
}

.container {
   width: 100vw;
   height: 100vh;
   overflow: scroll;
}
.content {
    max-width: 800px;
    margin: 0 auto 100px;
    padding: 20px 0;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: #000;
    color: #fff;
    text-align: left;
    z-index: 1000;
    height: 60px;
    line-height: 60px;
    padding-left: 240px;
}
.header-mobile {
    display: none;
}
.logo {
    vertical-align: middle;
}

.title {
    text-align: center;
    margin-top: 140px;
}

.title h1 {
    font-size: 2.5rem;
    color: #000;
}

.line {
    width: calc(100% - 480px);
    height: 1px;
    background-color: #000;
    opacity: 0.2;
    margin: 80px auto 50px;
}

p {
    color: #000;

    font-family: "Helvetica Neue";
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
    line-height: 26px;
    opacity: 0.8;
}

h2 {
    color: #000;

    font-family: "Helvetica Neue";
    font-size: 24px;
    font-style: normal;
    font-weight: 500;
    line-height: 32px;
    margin-bottom: 16px;
}

ul {
    margin-left: 20px;
    list-style-type: disc;
}
ul li {
    color: #000;
    font-family: "Helvetica Neue";
    font-size: 16px;
    font-style: normal;
    font-weight: 400;
    line-height: 26px;
    opacity: 0.8;
    margin-bottom: 16px;
}

a {
    color: #007BFF;
    text-decoration: none;
    display: inline-block;
}
.header {
    padding: 0 12.5vw;
}

/* a:hover {
    text-decoration: underline;
} */

/* 移动端样式 */
@media screen and (max-width: 767px) {
    .header {
        background-color: #fff;
        padding-left: 20px;
    }
    .header-pc {
        display: none;
    }
    .header-mobile {
        display: block;
    }

    .title {
        margin-top: 106px;
        text-align: left;
        padding-left: 16px;
    }
    .title h1 {
        font-size: 28px;
    }
    .line {
        width: calc(100% - 32px);
        opacity: 0.2;
        margin: 52px auto 32px;
    }
    .content {
        padding: 0 16px 40px;
        /* margin-bottom: 40px; */
    }
    p {
        font-size: 14px;
        line-height: 22px;
    }
    h2 {
        font-size: 20px;
        margin-bottom: 12px;
    }

    ul li {
        font-size: 14px;
        line-height: 22px;
        margin-bottom: 12px;
    }
    .mb-40 {
        /* margin-bottom: 32px; */
    }
    .mb-16 {
        margin-bottom: 12px;
    }
}


  /* 大屏幕 768——1024使用以下样式 */
  @media screen and (min-width: 768px) and (max-width: 1023px) { 
    .line {
        width: calc(100% - 32vw);
    }
    
  }

  /* 大屏幕 1024——1280 使用以下样式 */
  @media screen and (min-width: 1024px) and (max-width: 1280px) { 
    .line {
        width: calc(100% - 32vw);
    }
  }
  /* 大屏幕 1281——1439使用以下样式 */
  @media screen and (min-width: 1281px) and (max-width: 1439px) { 
    .line {
        width: calc(100% - 32vw);
    }
  }

  /* 大屏幕 1440——1679使用以下样式 */
  @media screen and (min-width: 1440px) and (max-width: 1679px) {   
    .line {
        width: calc(100% - 32vw);
    }
  }

  /* 大屏幕 1680——1920使用以下样式 */
  @media screen and (min-width: 1680px) and (max-width: 1920px) { 
    .line {
        width: calc(100% - 32vw);
    }
  }

  /* 大屏幕 1921px以上使用以下样式 */
  @media screen and (min-width: 1921px) {
    .line {
        width: calc(100% - 32vw);
    }
  }