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

.back img {
  position: absolute;
  z-index: -1;
  width: 100%;
}

.country {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: 40px 70px 0 0;
  gap: 12px;
}

.country i {
  width: 1px;
  height: 18px;
  background-color: black;
}

.country .JC {
  font-size: 16px;
  color: #949494;
}

.country .ZC {
  font-size: 16px;
  color: black;
}



.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 010px 40px;

}

.nav {
  padding-top: 40px;
}



.nav .nav-right a {
  padding: 20px 33px;
}



.nav .nav-right a:hover {
  background-color: #50B477;
  color: #fff;
}

/* 内容部分 */
.about {
  width: 1500px;
  margin: 0 auto;
}

.nav-right a:nth-child(2) {
  background-color: #50B477;
  color: #fff;
}



.video {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  width: 100%;
  height: auto;
}

.video video {
  position: absolute;
  /* top: 120px; */
  left: 0;
  width: 100%;
  height: auto;
  z-index: -1;
}

.nav-bt {
  width: 100%;
  margin-top: 55%;
}

.nav-bt h1 {
  font-size: 60px;
  font-weight: 700;
  line-height: 60px;
  margin-top: 120px;

}

.nav-bt h2 {
  font-size: 38px;
  font-weight: 200;
  line-height: 60px;
  margin-top: 120px;
}

.nav-nr {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: flex-start;
  margin-top: 100px;
}

.nav-nr-l {
  width: 50%;
}

.nav-nr-l h4 {
  font-size: 20px;
  font-weight: 700;
  line-height: 35px;
  color: #4D4D4D;
}

.nav-nr-l p {
  font-size: 20px;
  font-weight: 200;
  line-height: 40px;
  color: #4D4D4D;
}

.nav-nr-l img {
  width: 100%;
  height: auto;
  margin: 40px 0;
}

.nav-nr-r {
  width: 50%;
}

.nav-nr-r h5 {
  font-size: 20px;
  font-weight: 700;
  line-height: 30px;
  margin-left: 60px;
  color: #4D4D4D;
}

.nav-nr-r p {
  font-size: 20px;
  font-weight: 200;
  line-height: 40px;
  margin-left: 60px;
  text-align: justify;
  color: #4D4D4D;
}

.sekuai {
  width: 930px;
  height: 350px;
  position: absolute;
  top: 61%;
  left: 40%;
  background-color: #50B477;
  z-index: -1;
}

.nav-nr-r li {
  width: 93%;
  font-size: 20px;
  font-weight: 200;
  line-height: 40px;
  margin-left: 60px;
  margin-top: 13%;
  color: #fff;
}

.wenan {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: auto;
  margin-top: -1%;
}

.wenan img {
  width: 100%;
  height: auto;
  margin-bottom: 10%;
}


/* < !-- 公共底部制作 --> */

.footer {
  text-align: center;
  padding-top: 10px;

}

.footer a {
  font-size: 13px;
  padding: 0 20px;
}

.footer a:hover {
  color: #50B477;
}

.contact-1 {
  text-align: center;
  padding-top: 120px;
  padding-bottom: 40px;

}

.contact-1 a {

  padding: 10px 20px;
  background-color: #50B477;
  color: #fff;

}

.dibu ul {

  text-align: center;
  padding-top: 10px;
}


.dibu ul p {
  font-size: 16px;
  /* font-weight: 200; */
  line-height: 30px;
}

.dibu footer {
  font-family: "Microsoft YaHei";
  margin-top: 8px;
  text-align: center;
  padding-bottom: 100px;
}

.dibu footer p {
  font-size: 16px;
}

@media screen and (max-width: 1700px) {
  .about {
    width: 1300px;
    margin: 0 auto;
  }

  .nav-bt {
    width: 100%;
    margin-top: 55%;
  }

  .nav-bt h1 {
    font-size: 60px;
    font-weight: 700;
    line-height: 60px;
    margin-top: 120px;

  }

  .nav-bt h2 {
    font-size: 38px;
    font-weight: 200;
    line-height: 60px;
    margin-top: 120px;
  }

  .nav-nr {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: flex-start;
    margin-top: 100px;
  }

  .nav-nr-l {
    width: 50%;
  }

  .nav-nr-l h4 {
    font-size: 18px;
    font-weight: 700;
    line-height: 35px;
    color: #4D4D4D;
  }

  .nav-nr-l p {
    font-size: 16px;
    font-weight: 200;
    line-height: 35px;
    color: #4D4D4D;
  }

  .nav-nr-l img {
    width: 100%;
    height: auto;
    margin: 40px 0;
  }

  .nav-nr-r {
    width: 50%;
  }

  .nav-nr-r h5 {
    font-size: 18px;
    font-weight: 700;
    line-height: 30px;
    margin-left: 60px;
    color: #4D4D4D;
  }

  .nav-nr-r p {
    font-size: 16px;
    font-weight: 200;
    line-height: 38px;
    margin-left: 60px;
    text-align: justify;
    color: #4D4D4D;
  }

  .sekuai {
    width: 840px;
    height: 300px;
    position: absolute;
    top: 63%;
    left: 40%;
    background-color: #50B477;
    z-index: -1;
  }

  .nav-nr-r li {
    width: 93%;
    font-size: 16px;
    font-weight: 200;
    line-height: 35px;
    margin-top: 17%;
    margin-left: 60px;
    text-align: justify;
    color: #fff;
  }
}

@media screen and (max-width: 1500px) {
  .about {
    width: 1100px;
    margin: 0 auto;
  }

  .nav-bt {
    width: 100%;
    margin-top: 55%;
  }

  .nav-bt h1 {
    font-size: 60px;
    font-weight: 700;
    line-height: 60px;
    margin-top: 120px;

  }

  .nav-bt h2 {
    font-size: 38px;
    font-weight: 200;
    line-height: 60px;
    margin-top: 120px;
  }

  .nav-nr {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: flex-start;
    margin-top: 100px;
  }

  .nav-nr-l {
    width: 50%;
  }

  .nav-nr-l h4 {
    font-size: 13px;
    font-weight: 700;
    line-height: 30px;
    color: #4D4D4D;
  }

  .nav-nr-l p {
    font-size: 13px;
    font-weight: 200;
    line-height: 30px;
    color: #4D4D4D;
  }

  .nav-nr-l img {
    width: 100%;
    height: auto;
    margin: 40px 0;
  }

  .nav-nr-r {
    width: 50%;
  }

  .nav-nr-r h5 {
    font-size: 13px;
    font-weight: 700;
    line-height: 20px;
    margin-left: 60px;
    color: #4D4D4D;
  }

  .nav-nr-r p {
    font-size: 13px;
    font-weight: 200;
    line-height: 30px;
    margin-left: 60px;
    text-align: justify;
    color: #4D4D4D;
  }

  .sekuai {
    width: 730px;
    height: 290px;
    position: absolute;
    top: 59%;
    left: 40%;
    background-color: #50B477;
    z-index: -1;
  }

  .nav-nr-r li {
    width: 93%;
    font-size: 13px;
    font-weight: 200;
    line-height: 35px;
    margin-top: 20%;
    margin-left: 60px;
    text-align: justify;
    color: #fff;
  }
}

@media screen and (max-width: 1200px) {

  .header,
  .neirou,
  .dibu {
    width: 1260px;
  }
}