.one {
  padding-top: 102px;
  width: 1440px;
  margin: 0 auto;
  padding-bottom: 84px;
}
.one .title {
  margin-bottom: 43px;
}
.one .title h3 {
  font-size: 34px;
  font-weight: 700;
  color: #FF6F24;
}
.one .main {
  display: flex;
}
.one .main .left,
.one .main .right {
  flex: 1;
}
.one .main .left {
  margin-right: 80px;
}
.one .main .left .top {
  margin-bottom: 40px;
  transition-delay: 0.2s;
}
.one .main .left .bottom {
  transition-delay: 0.4s;
}
.one .main .left p {
  font-size: 18px;
  line-height: 36px;
}
.one .main .left p:not(:nth-child(2n)):before{
  content: '●';
  font-size: 12px;
  margin-right: 5px;
  display: inline-block;
  transform: translateY(-2px);
}
.two {
  background-color: #F6F3F2;
  padding: 85px 0;
}
.two .box {
  width: 1440px;
  margin: 0 auto;
}
.two .box .title {
  font-size: 30px;
  line-height: 36px;
  /* color: #111; */
  color: #FF6F24;
  margin-bottom: 50px;
}
.two .box .main {
  display: flex;
}
.two .box .main .left {
  margin-right: 80px;
}
.two .box .main .right {
  transition-delay: 0.2s;
}
.two .box .main .left,
.two .box .main .right {
  flex: 1;
  font-size: 18px;
  line-height: 36px;
  color: #111;
}
.two .box .main .left p::before,
.two .box .main .right p::before{
  content: '●';
  font-size: 12px;
  margin-right: 5px;
  display: inline-block;
  transform: translateY(-2px);
}
.there {
  padding-top: 84px;
  width: 1440px;
  margin: 0 auto;
}
.there .item {
  position: relative;
}
.there .item.on .text h3,
.there .item.on .text p {
  transform: translateY(0);
  opacity: 1;
}
.there .item.on .text p {
  transition-delay: 0.2s;
}
.there .item .img {
  filter: brightness(0);
}
.there .item:not(:last-child) {
  margin-bottom: 40px;
}
.there .item .text {
  position: absolute;
  top: 85px;
  left: 64px;
}
.there .item .text h3 {
  font-size: 40px;
  line-height: 60px;
  /* color: #fff; */
  color: #FF6F24;
  transform: translateY(20px);
  opacity: 0;
  transition: all 1s;
}
.there .item .text p {
  font-size: 20px;
  color: #fff;
  line-height: 40px;
  transform: translateY(20px);
  opacity: 0;
  transition: all 1s;
}
.four {
  width: 1440px;
  margin: 0 auto;
  padding-top: 100px;
  display: flex;
  padding-bottom: 127px;
}
.four .left {
  flex: 1;
  margin-right: 80px;
}
.four .left .title h3 {
  font-size: 40px;
  font-weight: 700;
  /* color: #2C2F33; */
  color: #FF6F24;
  line-height: 50px;
}
.four .left .main {
  display: flex;
  margin-top: 117px;
}
.four .left .main .front {
  font-size: 120px;
  line-height: 1;
}
.four .left .main .contact {
  padding-top: 16px;
  margin-left: 10px;
  font-size: 20px;
  line-height: 40px;
}
.four .right {
  width: 600px;
}


@media screen and (max-width: 1680px) {
  .one,
  .two .box,
  .there,
  .four {
    width: 90%;
  }
  .there .item .text {
    top: 60px;
  }
  .one .title h3 {
    font-size: 30px;
  }
  .four .left .title h3,
  .there .item .text h3 {
    font-size: 36px;
  }
  .there .item .img img {
    width: 100%;
  }
  .four .left .main .front {
    font-size: 100px;
  }
  .four .left .main {
    margin-top: 100px;
  }
}
@media screen and (max-width: 1440px) {
  .one {
    padding-top: 70px;
    padding-bottom: 70px;
  }
  .one .main .left p {
    font-size: 16px;
    line-height: 28px;
  }
  .one .main .left .top {
    margin-bottom: 30px;
  }
  .two {
    padding: 70px 0;
  }
  .two .box .title,
  .one .title h3 {
    font-size: 28px;
  }
  .four .left .title h3,
  .there .item .text h3 {
    font-size: 32px;
  }
  .two .box .title {
    margin-bottom: 30px;
  }
  .one .main .left {
    margin-right: 60px;
  }
  .two .box .main .left,
  .two .box .main .right {
    font-size: 16px;
    line-height: 28px;
  }
  .two .box .main .left {
    margin-right: 60px;
  }
  .there .item .text {
    top: 40px;
  }
  .four .left .title h3 {
    line-height: 42px;
  }
  .four {
    padding-top: 80px;
    padding-bottom: 80px;
  }
  .there .item .text p span{
    font-size: 18px !important;
  }
  .four .left .main .contact {
    font-size: 18px;
    line-height: 32px;
  }
  .four .right {
    width: 520px;
  }
  .one .title {
    margin-bottom: 30px;
  }
  .four .left .main {
    margin-top: 70px;
  }
  .there .item .text h3 {
    line-height: 50px;
  }
  .there {
    padding-top: 60px;
  }
}
@media screen and (max-width: 1024px) {
  .one .main {
    flex-direction: column;
  }
  .one,
  .two .box,
  .there,
  .four {
    width: 100%;
    padding-left: 30px;
    padding-right: 30px;
  }
  .one {
    padding-top: 40px;
    padding-bottom: 40px;
  }
  .one .title {
    margin-bottom: 20px;
  }
  .one .main .left .top {
    margin-bottom: 20px;
  }
  .one .main .right {
    margin-top: 30px;
  }
  .one .main .right img {
    width: 100%;
  }
  .one .main .left {
    margin-right: 0;
  }
  .two {
    padding: 40px 0;
  }
  .two .box .title,
  .one .title h3 {
    font-size: 24px;
  }
  .two .box .main .left {
    margin-right: 50px;
  }
  .there .item .text {
    top: 30px;
    left: 30px;
  }
  .there .item .text h3 {
    line-height: 40px;
  }
  .four .left {
    margin-right: 0;
  }
  .four {
    flex-direction: column;
    padding-top: 40px;
    padding-bottom: 40px;
  }
  .four .left .title h3,
  .there .item .text h3 {
    font-size: 28px;
  }
  .four .left .title h3 {
    line-height: 36px;
  }
  .four .left .main .front {
    font-size: 80px;
  }
  .four .left .main {
    margin-top: 30px;
  }
  .four .right {
    width: 420PX;
    margin: 0 auto;
  }
}
@media screen and (max-width: 820px) {
  .two .box .main {
    flex-direction: column;
  }
  .two {
    padding: 30px 0;
  }
  .two .box .main .left {
    margin-right: 0;
  }
  .there {
    padding-top: 40px;
  }
  .there .item .text p {
    line-height: 20px;
  }
  .four .left .main .front {
    display: none;
  }
  .four .left .main .contact {
    padding-top: 0px;
    margin-left: 0;
  }
  .four .right {
    width: 360PX;
  }
  .one,
  .two .box,
  .there,
  .four {
    padding-left: 20px;
    padding-right: 20px;
  }
}
@media screen and (max-width: 540px) {
  .one .title {
    margin-bottom: 10px;
  }
  .one {
    padding-top: 30px;
    padding-bottom: 30px;
  }
  .one .main .left p {
    font-size: 14px;
    line-height: 24px;
  }
  .two .box .title,
  .one .title h3 {
    font-size: 22px;
  }
  .four .left .title h3,
  .there .item .text h3 {
    font-size: 24px;
  }
  .there .item .text h3 {
    line-height: 32px;
  }
  .there .item:not(:last-child) {
    margin-bottom: 30px;
  }
  .there .item .img,
  .there .item .img img {
    height: 100%;
  }
  .two .box .main .left,
  .two .box .main .right {
    font-size: 14px;
    line-height: 24px;
  }
  .two .box .title {
    margin-bottom: 10px;
  }
  .there .item .text p span{
    font-size: 16px !important;
  }
  .there .item .img {
    filter: brightness(1) !important;
  }
  .there .item .text {
    position: static;
    margin-top: 10px;
  }
  .there .item .text h3,
  .there .item .text p {
    color: #111;
    opacity: 1 !important;
    transform: translateY(0) !important;
  }
  .four .left .main .contact {
    font-size: 16px;
    line-height: 24px;
  }
  .four .left .main {
    margin-top: 20px;
  }
}
@media screen and (max-width: 450px) {
  .two .box .title,
  .one .title h3 {
    font-size: 20px;
  }
  .one {
    padding-top: 20px;
    padding-bottom: 20px;
  }
  .one .main .left p {
    font-size: 12px;
    line-height: 22px;
  }
  .two .box .title {
    line-height: 28px;
  }
  .there .item .text p span{
    font-size: 14px !important;
    line-height: 24px;
  }
  .there .item:not(:last-child) {
    margin-bottom: 20px;
  }
  .four .left .title h3,
  .there .item .text h3 {
    font-size: 20px;
  }
  .four .left .title h3 {
    line-height: 30px;
  }
  .four .right {
    width: 65%;
  }
  .four .left .main .contact {
    font-size: 14px;
    line-height: 20px;
  }
  .two .box .main .left,
  .two .box .main .right {
    font-size: 12px;
    line-height: 20px;
  }
}