.mian {
  width: 100%;
  height: auto;
  padding: 120px 0;
  background: #F5F7F7;
}

.mian .mian_content {
  width: 100%;
  height: auto;
  margin-top: 60px;
}

.mian .mian_content .mian_c_t {
  width: 100%;
  height: 173px;
  position: relative;
}

.mian .mian_content .mian_c_t img {
  width: 100%;
  height: 100%;
}

.mian .mian_content .mian_c_t .mian_c_t_desc {
  margin: 0;
  position: absolute;
  left: 0;
  bottom: 14px;
  width: 100%;
  height: auto;
  text-indent: 2em;
  padding: 0 68px;
  color: #FFF;
  font-size: 20px;
  font-weight: 400;
  line-height: 1.5;
}

.mian .mian_content .mian_c_b {
  width: 100%;
  height: auto;
  margin-top: 40px;
}

.mian .mian_content .mian_c_b .mian_c_b_item {
  width: 100%;
  height: auto;
  display: flex;
  flex-direction: row;
}

.mian .mian_content .mian_c_b .mian_c_b_item:last-child {
  flex-direction: row-reverse;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l {
  background: #FFF;
  width: 625px;
  height: 390px;
  padding: 80px 60px;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_title {
  text-align: left;
  color: #393E40;
  font-size: 24px;
  font-weight: 400;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_desc {
  margin-top: 20px;
  color: #808284;
  font-size: 14px;
  font-style: normal;
  font-weight: 400;
  line-height: 1.5;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a {
  margin-top: 60px;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  width: 138px;
  height: 42px;
  border-radius: 2px;
  border: 1px solid #6C7174;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a:hover {
  background: #D01A19;
  border: 1px solid #D01A19;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a:hover p {
  color: #FFF;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a:hover img:first-child {
  display: none;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a:hover img:last-child {
  display: block;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a p {
  color: #6C7174;
  font-size: 16px;
  font-weight: 400;
  margin: 0;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a img {
  margin-left: 4px;
  width: 9px;
  height: auto;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a img:first-child {
  display: block;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a img:last-child {
  display: none;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_btn {
  width: 100%;
  height: auto;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  margin-top: 32px;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_btn a {
  text-align: center;
  width: 138px;
  height: 46px;
  border-radius: 4px;
  border: 1px solid #E60D16;
  color: #E60D16;
  font-size: 16px;
  font-weight: 400;
  line-height: 46px;
  background: transparent;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_btn a:hover {
  color: #fff;
  background: #E60D16;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_btn a:last-child {
  margin-left: 70px;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_r {
  width: 625px;
  height: 390px;
}

.mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_r img {
  width: 100%;
  height: 100%;
}

@media screen and (max-width: 1280px) {
  .mian {
    width: 100%;
    height: auto;
    padding: 120px 0;
    background: #F5F7F7;
  }
  .mian .mian_content {
    width: 100%;
    height: auto;
    margin-top: 60px;
  }
  .mian .mian_content .mian_c_t {
    width: 100%;
    height: 310px;
    position: relative;
  }
  .mian .mian_content .mian_c_t img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .mian .mian_content .mian_c_t .mian_c_t_desc {
    margin: 0;
    position: absolute;
    left: 0;
    bottom: 56px;
    width: 100%;
    height: auto;
    text-indent: 2em;
    padding: 0 68px;
    color: #FFF;
    text-align: justify;
    font-size: 20px;
    font-weight: 400;
    line-height: 32px;
  }
  .mian .mian_content .mian_c_b {
    width: 100%;
    height: auto;
    margin-top: 40px;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item {
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: row;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item:last-child {
    flex-direction: row-reverse;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l {
    background: #FFF;
    width: 50%;
    height: 350px;
    padding: 50px 60px;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_title {
    text-align: left;
    color: #393E40;
    font-size: 24px;
    font-weight: 400;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_desc {
    margin-top: 20px;
    color: #808284;
    text-align: justify;
    font-size: 15px;
    font-style: normal;
    font-weight: 400;
    line-height: 22px;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a {
    margin-top: 60px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    width: 138px;
    height: 42px;
    border-radius: 2px;
    border: 1px solid #6C7174;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a:hover {
    background: #D01A19;
    border: 1px solid #D01A19;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a:hover p {
    color: #FFF;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a:hover img:first-child {
    display: none;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a:hover img:last-child {
    display: block;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a p {
    color: #6C7174;
    font-size: 16px;
    font-weight: 400;
    letter-spacing: 0.8px;
    margin: 0;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a img {
    margin-left: 4px;
    width: 9px;
    height: auto;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a img:first-child {
    display: block;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a img:last-child {
    display: none;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_btn {
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    margin-top: 32px;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_btn a {
    text-align: center;
    width: 138px;
    height: 46px;
    border-radius: 4px;
    border: 1px solid #E60D16;
    color: #E60D16;
    font-size: 16px;
    font-weight: 400;
    line-height: 46px;
    background: transparent;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_btn a:hover {
    color: #fff;
    background: #E60D16;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_btn a:last-child {
    margin-left: 70px;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_r {
    width: 50%;
    height: 350px;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_r img {
    width: 100%;
    height: 100%;
  }
}

@media screen and (max-width: 992px) {
  .mian {
    width: 100%;
    height: auto;
    padding: 25px 0;
    background: #F5F7F7;
  }
  .mian .mian_content {
    width: 100%;
    height: auto;
    margin-top: 20px;
  }
  .mian .mian_content .mian_c_t {
    width: 100%;
    height: auto;
    position: relative;
  }
  .mian .mian_content .mian_c_t img {
    display: none;
    width: 100%;
    height: 100%;
  }
  .mian .mian_content .mian_c_t .mian_c_t_desc {
    margin: 0;
    position: static;
    left: 0;
    bottom: 56px;
    width: 100%;
    height: auto;
    text-indent: 2em;
    padding: 0 0px;
    color: #393E40;
    font-size: 14px;
    font-weight: 400;
    line-height: 1.5;
  }
  .mian .mian_content .mian_c_b {
    width: 100%;
    height: auto;
    margin-top: 22px;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item {
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: column-reverse;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item:last-child {
    flex-direction: column-reverse;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l {
    background: #FFF;
    width: 100%;
    height: auto;
    padding: 30px 19px;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_title {
    text-align: left;
    color: #393E40;
    font-size: 24px;
    font-weight: 400;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_desc {
    margin-top: 20px;
    color: #808284;
    font-size: 14px;
    font-style: normal;
    font-weight: 400;
    line-height: 1.5;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a {
    margin-top: 40px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    width: 138px;
    height: 42px;
    border-radius: 2px;
    border: 1px solid #6C7174;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a:hover {
    background: #D01A19;
    border: 1px solid #D01A19;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a:hover p {
    color: #FFF;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a:hover img:first-child {
    display: none;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a:hover img:last-child {
    display: block;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a p {
    color: #6C7174;
    font-size: 14px;
    font-weight: 400;
    margin: 0;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a img {
    margin-left: 4px;
    width: 9px;
    height: auto;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a img:first-child {
    display: block;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l > a img:last-child {
    display: none;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_btn {
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    margin-top: 32px;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_btn a {
    text-align: center;
    width: 138px;
    height: 46px;
    border-radius: 4px;
    border: 1px solid #E60D16;
    color: #E60D16;
    font-size: 14px;
    font-weight: 400;
    line-height: 46px;
    background: transparent;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_btn a:hover {
    color: #fff;
    background: #E60D16;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_l .mian_b_btn a:last-child {
    margin-left: 24px;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_r {
    width: 100%;
    height: 54.4vw;
  }
  .mian .mian_content .mian_c_b .mian_c_b_item .mian_b_i_r img {
    width: 100%;
    height: 100%;
  }
}