body {
  min-height: 100vh;
  font-size: 16px;
  color: #272727;
  font-family: 'Microsoft YaHei', SimSun, Arial, Helvetica, sans-serif;
}

h1,
h2,
h3,
h4,
h5,
h6,
p {
  margin: 0;
  font-size: 16px;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

li {
  padding: 0;
  list-style-type: none;
}

a {
  text-decoration: none;
  color: #272727;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
  background-color: #f5f5f5;
}

::-webkit-scrollbar-thumb {
  border-radius: 4px;
  background-color: #cccecf;
}

.container {
  width: 1200px;
  margin: 0 auto;
}

.flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.fl {
  float: left !important;
}
.fr {
  float: right !important;
}
.clearfix::after {
  content: '';
  display: block;
  clear: both;
}

.mt18 {
  margin-top: 18px;
}

.mr18 {
  margin-right: 18px;
}

.mb18 {
  margin-bottom: 18px;
}

.ml18 {
  margin-left: 18px;
}

.section-title {
  position: relative;
  text-align: center;
  height: 66px;
  img {
    display: block;
    height: 50px;
    margin: 0 auto;
  }
  h3 {
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    font-size: 34px;
    font-weight: normal;
  }
}

// 导航菜单
.header {
  position: sticky;
  width: 100%;
  left: 0;
  top: 0;
  z-index: 99;
  background-color: #fff;
  .logo {
    h1 {
      font-size: 0;
    }
    img {
      display: block;
      height: 42px;
    }
  }
  .nav {
    display: flex;
    align-items: center;
    height: 68px;
    li {
      position: relative;
      height: 100%;
      margin-left: 56px;
      &:hover {
        &::after {
          opacity: 1;
        }
        a {
          color: #0688d2;
        }
      }
      &:first-child {
        margin-left: 0;
      }
      &::after {
        content: '';
        opacity: 0;
        width: 100%;
        height: 3px;
        position: absolute;
        left: 0;
        bottom: 0;
        background-color: #0688d2;
        transition: all .2s;
      }
      &.active {
        &::after {
          opacity: 1;
        }
        a {
          color: #0688d2;
        }
      }
      a {
        display: block;
        line-height: 68px;
        transition: all .2s;
      }
    }
  }
}

// 底部区域
.footer {
  margin-top: 120px;
  padding-top: 38px;
  padding-bottom: 24px;
  background: #1b1b1b;

  .container {
    .section {
      margin-right: 180px;
      .item {
        position: relative;
        color: rgba(255, 255, 255, 0.5);
        margin-top: 20px;
        padding-left: 30px;
        font-size: 12px;

        &::before {
          content: '';
          display: block;
          width: 20px;
          height: 20px;
          background-color: #fff;
          position: absolute;
          left: 0;
          top: 50%;
          transform: translateY(-50%);
        }

        &.mobile {
          span {
            &:last-child {
              margin-left: 16px;
            }
          }
        }
      }
    }

    .nav {
      margin-left: 110px;
      li {
        margin-top: 25px;
        text-align: center;
        &:first-child {
          margin-top: 12px;
        }
        a {
          font-size: 14px;
          color: rgba(255, 255, 255, 0.5);

          &:hover {
            color: #0688d2;
          }
        }
      }
    }

    .qrcode {
      padding: 7px;
      background: rgba(255, 255, 255, 0.06);
      img {
        display: block;
        width: 94px;
        height: 94px;
        background-color: #fff;
      }
      .tip {
        font-size: 12px;
        color: #ffffff;
        margin-top: 5px;
        text-align: center;
      }
    }
  }

  .line {
    width: 100%;
    height: 1px;
    background-color: rgba(255, 255, 255, 0.3);
    margin: 32px 0 24px;
  }

  .link {
    display: flex;
    justify-content: center;
    align-items: center;
    i {
      display: block;
      height: 10px;
      width: 1px;
      background-color: rgba(255, 255, 255, 0.4);
      margin: 0 16px;
    }
    a {
      color: rgba(255, 255, 255, 0.4);
      font-size: 12px;
      &:hover {
        color: #0688d2;
      }
    }
  }

  .copyright {
    margin-top: 20px;
    text-align: center;
    color: rgba(255, 255, 255, 0.4);
    font-size: 12px;
    a {
      color: rgba(255, 255, 255, 0.8);
      text-decoration: underline;
    }
    * {
      margin: 0 24px;
    }
  }
}