.about-bg {
  background: url(../images/about12_bg.jpg) no-repeat center 0 / cover;
}
.com-nav2 {
  background: rgba(213, 8, 17, 0.6);
}
.com-nav2 ul {
  display: flex;
  justify-content: center;
  align-items: center;
}
.com-nav2 ul li {
  padding: 0 0.2rem;
}
.com-nav2 ul a {
  display: block;
  font-size: 14px;
  line-height: 30px;
  color: #fff;
}

.about1 {
  position: relative;
  padding: 0 0 1rem;
  background: url(../images/mabout1_bg.jpg) no-repeat center 0 / cover;
}
.about1-main {
  padding: 0.2rem;
}

.about1-font {
  padding: 3.5rem 0 0;
  font-weight: bold;
  font-size: 0.48rem;
  line-height: 0.6rem;
  color: #fff;
}
.about1-ad {
  padding-top: 0.6rem;
  text-align: left;
}
.about1-ad img {
  display: none;
}

.about1-title {
  font-size: 18px;
  line-height: 36px;
  color: #fff;
}
.about1-text {
  height: 210px;
  margin: 0.1rem 0 0.8rem;
  overflow: hidden;
  font-size: 14px;
  line-height: 30px;
  color: #fff;
}
.about1-text a {
  color: #d8171f;
}

.about1-right ul {
  display: flex;
  flex-wrap: wrap;
}
.about1-right ul li {
  width: 50%;
  padding: 5px;
}
.about1-li-icon {
  padding: 0 0 0.1rem;
}
.about1-li-icon img {
  width: 0.6rem;
}
.about1-li-font {
  display: flex;
  align-items: flex-end;
  margin: 0.1rem 0;
  font-size: 12px;
  line-height: 1;
  color: #fff;
}
.about1-li-font span {
  font-size: 0.36rem;
  line-height: 1;
}
.about1-li-detail {
  font-size: 12px;
  line-height: 20px;
  color: #fff;
}
.about1-mouse {
  display: none;
}
@media (min-width: 1200px) {
  .about-bg {
    padding-top: 6vw;
  }

  .com-nav2 ul li {
    padding: 0 1.5vw;
  }
  .com-nav2 ul a {
    font-size: 0.8vw;
    line-height: 3vw;
    background: url(../images/white.jpg) no-repeat 0 bottom / 0 2px;
    transition: 0.3s;
  }
  .com-nav2 ul a:hover {
    background-size: 100% 2px;
  }

  .about1 {
    height: 42vw;
    padding: 0;
    background: none;
  }
  .about1-main {
    display: flex;
    justify-content: space-between;
    width: 80vw;
    margin: 0 auto;
    padding: 5vw 0 0;
  }

  .about1-left {
    width: 24vw;
  }
  .about1-font {
    padding: 0 0 1.5vw;
    font-size: 2.4vw;
    line-height: 3vw;
  }
  .about1-ad {
    text-align: left;
  }
  .about1-ad img {
    width: 20vw;
  }

  .about1-right {
    width: 50vw;
  }
  .about1-title {
    font-size: 1.5vw;
    line-height: 2vw;
    color: #fff;
  }
  .about1-text {
    height: 8vw;
    margin: 2vw 0;
    overflow: hidden;
    font-size: 0.8vw;
    line-height: 2vw;
    color: #fff;
  }
  .about1-text a {
    color: #d8171f;
  }

  .about1-right ul {
    display: flex;
    justify-content: space-between;
  }
  .about1-right ul li {
    width: auto;
    padding: 0;
  }
  .about1-li-icon {
    padding: 0 0 1.5vw;
  }
  .about1-li-icon img {
    width: 3vw;
  }
  .about1-li-font {
    margin: 0;
  }
  .about1-li-font span {
    font-size: 1.8vw;
    line-height: 1;
  }
  .about1-li-detail {
    font-size: 0.8vw;
    line-height: 1.4vw;
  }
  .about1-mouse {
    display: block;
    position: absolute;
    z-index: 5;
    left: 0;
    bottom: 0;
    width: 100%;
    text-align: center;
  }
  .about1-mouse img {
    width: 3vw;
  }
}

/* about2 */
.about2 {
  position: relative;
  z-index: 5;
}
.about2-main {
  padding: 0.2rem;
  background: url(../images/about2_bg.png) no-repeat center bottom / cover;
}
.about2-leader {
  position: absolute;
  z-index: 5;
  left: 0;
  bottom: 2px;
  width: 100%;
}
.about2-leader img {
  width: 100%;
}
.about2-layer {
  position: absolute;
  z-index: 1;
  left: 0.2rem;
  bottom: 2px;
  width: 3rem;
  height: 4rem;
  padding: 0.2rem 0 0 0.2rem;
  background: #fff;
}

.about2-layer-title {
  padding: 0 0 0.1rem;
  font-weight: bold;
  font-size: 0.36rem;
  line-height: 0.4rem;
}
.about2-layer-title .en {
  color: #d8171f;
}
.about2-layer-title .ch {
  margin: 0.1rem 0 0;
  color: #000;
}
.about2-layer-name {
  font-size: 16px;
  line-height: 24px;
  color: #000;
}
.about2-layer-pos {
  margin: 0.1rem 0 0;
  padding-left: 0.1rem;
  font-size: 12px;
  line-height: 1;
  color: #000;
  border-left: 2px solid #d8171f;
}

.about2-box {
  position: relative;
  padding-left: 53%;
  background: url(../images/about2_arrow.png) no-repeat right 0.2rem /0.4rem;
}
.about2-box-title {
  padding: 0.1rem 0;
  font-size: 16px;
  line-height: 24px;
}
.about2-box-text {
  height: 200px;
  overflow: hidden;
  font-size: 14px;
  line-height: 20px;
  color: #000;
}

@media (min-width: 1200px) {
  .about2 {
    position: relative;
    z-index: 5;
    height: 38vw;
  }
  .about2-main {
    position: absolute;
    left: 3vw;
    top: 0;
    width: 94vw;
    height: 42vw;
    margin: 0 auto;
    padding: 5vw 5vw 0 50vw;
    background: url(../images/about2_bg.png) no-repeat center bottom / 100%;
  }
  .about2-leader {
    position: absolute;
    z-index: 5;
    left: 0;
    bottom: 4px;
  }
  .about2-leader img {
    width: 100%;
  }
  .about2-layer {
    position: absolute;
    z-index: 1;
    left: 6vw;
    bottom: 0;
    width: 17.6vw;
    height: 36.6vw;
    padding: 4vw 0 0 2vw;
    background: #fff;
  }

  .about2-layer-title {
    padding: 0 0 3vw;
    font-weight: bold;
    font-size: 1.8vw;
    line-height: 2vw;
  }
  .about2-layer-title .en {
    color: #d8171f;
  }
  .about2-layer-title .ch {
    margin: 0.5vw 0 0;
    color: #000;
  }
  .about2-layer-name {
    font-size: 1.2vw;
    line-height: 1.6vw;
    color: #000;
  }
  .about2-layer-pos {
    margin: 0.5vw 0 0;
    padding-left: 0.5vw;
    font-size: 12px;
    line-height: 1;
    color: #000;
    border-left: 4px solid #d8171f;
  }

  .about2-box {
    position: relative;
    padding: 0;
    background: url(../images/about2_arrow.png) no-repeat right 0 / 4.5vw;
  }
  .about2-box-title {
    padding: 3vw 0 0.2vw;
    font-size: 1.2vw;
    line-height: 1.5vw;
  }
  .about2-box-text {
    height: 19.6vw;
    overflow: hidden;
    font-size: 0.7vw;
    line-height: 1.4vw;
    color: #000;
  }
}

/* about3 */
.about3 {
  position: relative;
  z-index: 1;

  padding: 0.4rem 0.2rem;
  background: url(../images/about3_bg.jpg) no-repeat center 0 / cover;
}
.about3-main {
  position: relative;
}
.about3-imgs {
  position: relative;
  z-index: 1;
  text-align: center;
}
.about3-imgs img {
  width: 3rem;
}

.about3-img1 {
  position: absolute;
  z-index: 1;
  left: 1rem;
  top: 2.8rem;
}
.about3-img1 img {
  width: 0.8rem;
}
.about3-img2 {
  position: absolute;
  z-index: 10;
  left: 1.6rem;
  top: 1.2rem;
}
.about3-img2 img {
  width: 3rem;
}
.about3-img3 {
  position: absolute;
  z-index: 1;
  top: 22vw;
  right: 0;
}
.about3-img3 img {
  width: 3.6vw;
}
.about3-img4 {
  position: absolute;
  z-index: 1;
  top: 0.7rem;
  right: 0.3rem;
}
.about3-img4 img {
  width: 1.5rem;
}
.about3-circle1,
.about3-circle2 {
  display: block;
  color: #000;
}
.about3-circle-arrow {
  display: none;
}
.about3-circle-title {
  position: relative;
  padding: 0 0 5px;
}
.about3-circle2 .about3-circle-title {
  display: none;
}

.about3-circle-title .ch {
  font-size: 0.36rem;
  line-height: 0.4rem;
}
.about3-circle-title .en {
  display: none;
}

@media (min-width: 1200px) {
  .about3 {
    position: relative;
    z-index: 1;
    height: 45vw;
    padding: 7.2vw 0 0;
    background: url(../images/about3_bg.jpg) no-repeat center 0 / cover;
  }
  .about3-main {
    position: relative;
    width: 80vw;
    margin: 0 auto;
  }
  .about3-imgs {
    position: relative;
    z-index: 1;
    text-align: center;
  }
  .about3-imgs img {
    width: 25vw;
  }

  .about3-img1 {
    position: absolute;
    z-index: 1;
    left: 0;
    top: 21vw;
  }
  .about3-img1 img {
    width: 6.5vw;
  }
  .about3-img2 {
    position: absolute;
    z-index: 10;
    left: 23.2vw;
    top: 8vw;
  }
  .about3-img2 img {
    width: 31vw;
  }
  .about3-img3 {
    position: absolute;
    z-index: 1;
    top: 22vw;
    right: 0;
  }
  .about3-img3 img {
    width: 3.6vw;
  }
  .about3-img4 {
    position: absolute;
    z-index: 1;
    top: 3.5vw;
    right: 1.5vw;
  }
  .about3-img4 img {
    width: 7.5vw;
  }
  .about3-circle1 {
    position: absolute;
    z-index: 5;
    left: 6vw;
    top: 8vw;
    width: 20vw;
    height: 20vw;
    padding: 3vw;
    color: #fff;
    background: url(../images/about3_circle1.png) no-repeat center / cover;
    transition: 0.6s;
  }
  .about3-circle-arrow {
    display: block;
  }
  .about3-circle1 .about3-circle-arrow {
    padding-left: 3vw;
    font-size: 1.8vw;
    line-height: 2vw;
  }
  .about3-circle1 .about3-circle-title {
    position: relative;
    padding: 0 0 1.2vw;
  }
  .about3-circle1 .about3-circle-title .ch {
    font-size: 1.8vw;
    line-height: 2vw;
  }
  .about3-circle1 .about3-circle-title .en {
    position: absolute;
    right: -1.2vw;
    bottom: 0;
    display: flex;
    align-items: flex-end;
    font-size: 14px;
    line-height: 1;
    text-transform: uppercase;
  }
  .about3-circle1 .about3-circle-title .en span {
    font-size: 1.8vw;
  }
  .about3-circle1 .about3-circle-text {
    height: 6vw;
    overflow: hidden;
    margin: 1vw 0 0;
    font-size: 0.7vw;
    line-height: 1.2vw;
  }

  .about3-circle2 {
    position: absolute;
    z-index: 5;
    top: 12vw;
    left: 55vw;
    width: 17.6vw;
    height: 17.6vw;
    padding: 3vw;
    color: #000;
    background: url(../images/about3_circle2.png) no-repeat center / cover;
    transition: 0.6s;
  }
  .about3-circle2 .about3-circle-arrow {
    padding-left: 2.4vw;
    font-size: 1.2vw;
    line-height: 1.5vw;
  }
  .about3-circle2 .about3-circle-title {
    position: relative;
    display: block;
    padding: 0 0 1vw;
  }
  .about3-circle2 .about3-circle-title .ch {
    font-size: 1.2vw;
    line-height: 1.5vw;
  }
  .about3-circle2 .about3-circle-title .en {
    position: absolute;
    right: -0.2vw;
    bottom: 0;
    display: flex;
    align-items: flex-end;
    font-size: 14px;
    line-height: 1;
    text-transform: uppercase;
  }
  .about3-circle2 .about3-circle-title .en span {
    font-size: 1.2vw;
  }
  .about3-circle2 .about3-circle-text {
    height: 6vw;
    overflow: hidden;
    margin: 1vw 0 0;
    font-size: 0.7vw;
    line-height: 1.2vw;
  }
  .about3-circle1:hover {
    color: #fff;
    transform: rotate(360deg);
  }
  .about3-circle2:hover {
    color: #000;
    transform: rotate(360deg);
  }
}

/* about4 */
.about4 {
  height: 50vw;
  background: url(../images/about4_bg.jpg) no-repeat center 0 / cover;
}
.swiper-container {
  overflow: hidden;
}
.about4-main {
  width: 72vw;
  margin: 0 auto;
}
.about4-title {
  font-weight: bold;
  font-size: 1.8vw;
  line-height: 2.4vw;
  color: #000;
  text-align: center;
}
.about4-type {
  width: 140px;
  margin: 0.5vw auto 1.2vw;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  color: #fff;
  background: #d8171f;
  border-radius: 10px;
}
.about4-ad {
  font-size: 2.4vw;
  line-height: 3vw;
  text-align: center;
  color: #000;
}
.about4-box {
  padding: 3vw 0 0;
}
.about4-li {
  display: block;
  padding: 1.5vw;
}

.about4-li i {
  display: block;
  padding: 0 2.8vw;
  background: url(../images/honor_bg.png) no-repeat center bottom/100%;
}
.about4-li img {
  width: 100%;
}
.about4-li p {
  margin: 2vw 0 0;
  height: 2.4vw;
  overflow: hidden;
  font-weight: bold;
  font-size: 0.9vw;
  line-height: 1.2vw;
  color: #000;
  text-align: center;
}
@media (max-width: 1200px) {
  .about4 {
    height: auto;
    padding: 0.2rem;
  }
  .about4-main {
    width: auto;
  }
  .about4-title {
    font-size: 0.36rem;
    line-height: 0.48rem;
  }
  .about4-type {
    width: 140px;
    margin: 5px auto;
    font-size: 14px;
    line-height: 20px;
    text-align: center;
    color: #fff;
    background: #d8171f;
    border-radius: 10px;
  }
  .about4-ad {
    font-size: 0.48rem;
    line-height: 0.6rem;
    text-align: center;
    color: #000;
  }
  .about4-box {
    padding: 0.6rem 0 0;
  }

  .about4-li {
    padding: 5px;
  }

  .about4-li i {
    padding: 0 0.5rem;
  }

  .about4-li p {
    margin: 10px 0 0;
    height: 40px;
    font-size: 14px;
    line-height: 20px;
  }
}