.index-about {
    width: 100%;
    height: 213vh;
    position: relative;
  }
  @media (max-width: 1580px) {
    .index-about {
      height: 220vh;
    }
  }
  @media (max-width: 767px) {
    .index-about {
      height: 188vh;
    }
  }
  .index-about .indexabout1 {
    width: 100%;
    height: 100vh;
    overflow: hidden;
    position: sticky;
    top: 0;
    left: 0;
  }
  .index-about .indexabout1 .cn0 {
    text-align: center;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 25rem;
    height: 25rem;
    border-radius: 50%;
    overflow: hidden;
    transition: all 0.4s ease-in-out;
  }
  .index-about .indexabout1 .cn0.on {
    width: 9rem;
    height: 9rem;
  }
  .index-about .indexabout1 .cn0.on2 {
    width: 4.6rem;
    height: 4.6rem;
  }
  @media (min-width: 1921px) {
    .index-about .indexabout1 .cn0 {
      width: 40rem;
      height: 40rem;
    }
  }
  .index-about .indexabout1 .cn0 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .index-about .indexabout1 .cn1 {
    text-align: center;
    position: absolute;
    left: 50%;
    top: 70%;
    opacity: 0;
    transform: translate(-50%, -50%);
    width: 60.3125%;
    transition: all 0.4s ease-in-out;
  }
  .index-about .indexabout1 .cn1.on {
    top: 50%;
    opacity: 1;
  }
  .index-about .indexabout1 .cn1 span {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
  }
  .index-about .indexabout1 .cn1 span:nth-child(1) {
    font-size: 2rem;
    text-shadow: 0px 29px rgba(212, 223, 241, 0.04);
    opacity: 0.5;
    color: #fff;
  }
  .index-about .indexabout1 .cn1 span:nth-child(2) {
    font-size: 2rem;
    text-shadow: 0px 0px #000;
    opacity: 0;
    color: #fff;
  }
  .index-about .indexabout1 .cn1 img {
    opacity: 0.8;width: 100%; display: block;
  }
  .index-about .indexabout1 .cn2 {
    text-align: center;
    position: absolute;
    left: 50%;
    top: 70%;
    opacity: 0;
    transform: translate(-50%, -50%);
    transition: all 0.4s ease-in-out;
  }
  .index-about .indexabout1 .cn2.on {
    top: 50%;
    opacity: 1;
  }
  .index-about .indexabout1 .cn2 img {
    width: 4.73rem;
    height: 4.73rem;
  }
  .index-about .indexabout2 {
    position: relative;
    z-index: 5;
    padding-top: 1rem;
  }
  .index-about .indexabout2 .cn3 .cn3a {
    text-align: center;
    color: #1c1f26;
    line-height: 1.3;
    z-index: 2;
    position: relative;
    opacity: 0;
    top: 1rem;
    transition: all 0.4s ease-in-out;
  }
  @media (max-width: 1200px) {
    .index-about .indexabout2 .cn3 .cn3a {
      font-size: 0.3rem;
    }
  }
  .index-about .indexabout2 .cn3 .cn3a.on {
    top: 0;
    opacity: 1;
  }
  .index-about .indexabout2 .cn3 .cn3b {
    z-index: 2;
    opacity: 1;
    display: flex;
    justify-content: center;
    position: relative;
    margin-top: 0.4rem;
    opacity: 0;
    top: 0.3rem;
    transition: all 0.4s ease-in-out;
  }
  .index-about .indexabout2 .cn3 .cn3c {
    z-index: 2;    width: 70%;
    margin: 0 auto;
    text-align: center;
    opacity: 1;
    display: flex;
    justify-content: center;
    position: relative;
    margin-top: 0.4rem;
    opacity: 0;
    top: 0.3rem;
    transition: all 0.4s ease-in-out;
  }
  @media (max-width: 991px) {
    .index-about .indexabout2 .cn3 .cn3b {
      margin-top: 0.7rem;
    }
  }
  .index-about .indexabout2 .cn3 .cn3b.on {
    top: 0;
    opacity: 1;
  }
  .index-about .indexabout2 .cn3 .cn3c.on {
    top: 0;
    opacity: 1;
  }
  .index-about .indexabout2 .cn4 {
    margin-top: 1.5rem;
    position: relative;
    width: 100%;
    opacity: 1;
  }
  .index-about .indexabout2 .cn4 .container {
    background-color: rgba(255, 255, 255, 0.7);
    display: flex;
    flex-wrap: wrap;
    padding: 0.6rem 0 0;
    backdrop-filter: blur(2px);
  }
  @media (max-width: 991px) {
    .index-about .indexabout2 .cn4 .container {
      padding: 0.6rem 0 2rem;
    }
  }
  .index-about .indexabout2 .cn4 .container .cn4d {
    width: 88%;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
  }
  @media (max-width: 1260px) {
    .index-about .indexabout2 .cn4 .container .cn4d {
      width: 100%;
    }
  }
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e {
    width: 20%;
    position: relative;
    top: 0.6rem;
    opacity: 0;
    margin-bottom: 0.4rem;
  }
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e img{width:70%;display: block;}
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e.on {
    top: 0;
    opacity: 1;
  }
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e:nth-child(1) {    transition: all 0.4s 0.2s ease-in-out;  }
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e:nth-child(2) {    transition: all 0.4s 0.4s ease-in-out;  }
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e:nth-child(3) {    transition: all 0.4s 0.6s ease-in-out;  }
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e:nth-child(4) {    transition: all 0.4s 0.8s ease-in-out;  }
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e:nth-child(5) {    transition: all 0.4s 1s ease-in-out;  }
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e:nth-child(6) {    transition: all 0.4s 1.2s ease-in-out;  }
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e:nth-child(7) {    transition: all 0.4s 1.4s ease-in-out;  }
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e:nth-child(8) {    transition: all 0.4s 1.6s ease-in-out;  }
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e:nth-child(9) {    transition: all 0.4s 1.8s ease-in-out;  }
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e:nth-child(10) {   transition: all 0.4s 2s ease-in-out;  }

  @media (max-width: 1200px) {
    .index-about .indexabout2 .cn4 .container .cn4d .cn4e {
      width: 50%;
    }
  }
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e .cn9::before {
    background-color: #d5d5d5;
  }
  .index-about .indexabout2 .cn4 .container .cn4d .cn4e .cn9::after {
    background-color: #d5d5d5;
  }
  .index-about .indexabout2 .cn4 .container .cn4f {
    width: 100%;
  }
  .index-about .indexabout2 .cn4 .container .cn4f img {
    width: 100%;
  }
  .index-about .indexabout2 .cn4 .container .cn4a {
    align-items: center;
    display: flex;
    width: 100%;
  }
  @media (max-width: 991px) {
    .index-about .indexabout2 .cn4 .container .cn4a {
      padding-top: 0.5rem;
      padding-bottom: 0.5rem;
    }
  }
  .index-about .indexabout2 .cn4 .container .cn4a .cn4b {
    width: 50%;
    font-size: 0.9rem;
    color: #e61010;
    display: flex;
  }
  .index-about .indexabout2 .cn4 .container .cn4a .cn4b .num {
    width: 50%;
  }
  @media (max-width: 991px) {
    .index-about .indexabout2 .cn4 .container .cn4a .cn4b {
      width: 40%;
      font-size: 0.7rem;
    }
  }
  .index-about .indexabout2 .cn4 .container .cn4a .cn4c {
    width: 50%;
    color: #aaaaaa;
  }
  @media (max-width: 991px) {
    .index-about .indexabout2 .cn4 .container .cn4a .cn4c {
      width: 60%;
    }
  }
  @media (min-width: 1921px) {
    .index-about {height: 170vh;}
  }
  .font36 {font-size: 0.5rem;line-height: 2;  }
  .font22 {font-size: 0.22rem; color: #666;line-height: 1.5;  }
  @media (max-width: 1650px) {
    .font22 {font-size: 0.2rem;}
    .index-about .indexabout2 .cn4{    margin-top: 0.5rem;}
  }
  @media (max-width: 1440px) {
    .font36 {font-size: 0.45rem;}
    .font22 {font-size: 0.2rem;}
    .index-about .indexabout2 .cn4{    margin-top: 0.5rem;}
  }
  @media (max-width: 991px) {
    .font36 {font-size: 0.4rem;}
    .font22 {font-size: 0.18rem;}
  }
  .font-b {    font-weight: bold;  }
  
.public-btn1 {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 36px;
    height: 60px;
    border-radius: 30px;
    background-color: #e61010;
    color: #fff;
    cursor: pointer;
    transition: all 0.3s;
    border: 1px solid #e61010;
    overflow: hidden;
  }
  @media (max-width: 1580px) {
    .public-btn1 {
      height: 55px;
    }
  }
  @media (max-width: 1440px) {
    .index-about .indexabout1 .cn1{    width: 89.3125%;}
    .index-about .indexabout2 .cn3 .cn3c{width:85%}
    .index-about .indexabout2 .cn4 .container{    padding: 0.4rem 0 0;}
    .index-about .indexabout2 .cn4 .container .cn4d .cn4e{    margin-bottom: 0.2rem;}
  }
  @media (max-width: 1200px) {
    .index-about .indexabout1 .cn2 img{ width:1.73rem;height: 1.73rem;}
    .index-about .indexabout1 .cn0.on2{ width:3.6rem;height: 3.6rem;}
    .public-btn1 {      padding: 0 0.4rem;      border-radius: 0.4rem;    }
    .index-about .indexabout1{height: 52vh;}
    .index-about .indexabout2 .cn4 .container .cn4d .cn4e img{width:65%;margin: 0 auto;}
  }
  .public-btn1 span {
    position: relative;
    z-index: 5;font-size: 0.22rem;
  }
  .public-btn1 img,
  .public-btn1 svg {
    position: relative;
    z-index: 5;
    margin-left: 0.1rem;
    width: 12px;
    height: 12px;
    transition: all 0.3s;
  }
  @media (max-width: 767px) {
    .public-btn1 img,
    .public-btn1 svg {
      width: 0.2rem;
      height: 0.2rem;
    }
  }
  .public-btn1 img path,
  .public-btn1 svg path {
    fill: #fff;
    transition: all 0.3s;
  }
  .public-btn1:hover img,
  .public-btn1:hover svg {
    transform: translateX(0.1rem);
  }
  .public-btn1::before {
    content: "";
    position: absolute;
    top: -2px;
    left: -2px;
    z-index: 1;
    width: calc(100% + 4px);
    height: calc(100% + 4px);
    background-color: #fff;
    border-radius: 25px;
    transform: scaleX(0);
    transform-origin: right;
    -webkit-transition: transform 0.6s cubic-bezier(0.785, 0.135, 0.15, 0.86);
    -moz-transition: transform 0.6s cubic-bezier(0.785, 0.135, 0.15, 0.86);
    -o-transition: transform 0.6s cubic-bezier(0.785, 0.135, 0.15, 0.86);
    transition: transform 0.6s cubic-bezier(0.785, 0.135, 0.15, 0.86);
  }
  @media (max-width: 767px) {
    .public-btn1::before {
      border-radius: 0.4rem;
    }
  }
  .public-btn1:hover {
    color: #e61010;
  }
  .public-btn1:hover::before {
    transform: scaleX(1);
    transform-origin: left;
  }
  .public-btn1:hover svg path {
    fill: #e61010;
  }