* {
  margin: 0;
  padding: 0;
}

.public_w {
  max-width: 1400px;
  width: 85%;
  margin: 0 auto;
}

.header_pc {
  width: 100%;
  /* font-family: '宋体'; */
  background: linear-gradient(to bottom, #000000, #00000000);
  position: absolute;
  top: 0;
  z-index: 10;
}

.header_pc .nav_bar {
  width: 85%;
  height: 90px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header_pc .nav_bar>a>img {
  width: 100%;
  height: 100%;
}

.header_pc .nav_bar>div {
  display: flex;
  align-items: center;
  /* border: 1px #f00 solid; */
}

.header_pc .nav_bar>div .nav {
  height: 90px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  /* border: 1px #f00 solid; */
}

.header_pc .nav_bar>div .nav li {
  height: 100%;
  display: flex;
  /* align-items: center; */
  cursor: pointer;
  position: relative;
  align-items: center;
  margin-right: calc(28px + 3rem);
}

.header_pc .nav_bar>div .nav li a {
  font-size: calc(10px + 0.5rem);
  color: #ffffff;
  font-style: normal;
  transition: all 0.3s;
  font-family: Century_Gothic;
}

.header_pc .nav_bar>div .nav .active a {
  color: #98b8ac;
}

.header_pc .nav_bar>div .nav li:hover a {
  color: #98b8ac;
}

.header_pc .nav_bar>div .nav>li:nth-last-child(1) {
  margin-right: 0;
}

@media screen and (max-width: 1100px) {
  .header_pc {
    position: static;
    background: #3d4144;
  }

  .header_pc .nav_bar {
    flex-direction: column;
    justify-content: center;
    gap: calc(10px + 1rem);
  }

  .header_pc .nav_bar>div .nav {
    height: auto;
    gap: calc(10px + 2rem);
  }

  .header_pc .nav_bar img {
    height: calc(36px + 1rem) !important;
  }

  .header_pc .nav_bar>div .nav li {
    margin-right: auto;
  }

  .header_pc .nav_bar>div .nav li a {
    font-size: calc(11px + 1rem);
  }

  .banner .banner_text {
    padding-left: 0;
    align-items: flex-start;
    padding-left: 10%;
  }

  .banner .banner_text .p2 {
    width: 90%;
    font-size: calc(10px + 1rem);
    line-height: 1.5;
  }

  .banner .banner_text .ban_btn {
    width: calc(105px + 5rem);

  }

  .banner .banner_text .ban_btn a {
    font-size: calc(9px + 1rem);
  }
}