/* cover */
.cover {
    position: relative;
    height: 950px;
    width: 100%;
    z-index: 2;
    background-color: #000000;

}

.cover .w {
    height: 100%;
}

.cover_bd {
    height: 100%;
    width: 100%;
    overflow: hidden;
    display: flex;
    justify-self: center;
    align-items: center;
}

.bg_1 {
    background: url(../images/cover-1.jpg) no-repeat;
    background-size: cover;
    background-position: center center;
}

.bg_2 {
    background: url(../images/cover-2.jpg) no-repeat;
    background-size: cover;
    background-position: center center;
}

.bg_3 {
    background: url(../images/cover-3.jpg) no-repeat;
    background-size: cover;
    background-position: center center;
}


.cover_bd_content_1 p:nth-child(1){
    font-size: 14px;
    color: #ffffff;
    font-weight: 700;
    letter-spacing: 3px;
    margin-bottom: 20px;
    font-family: 'Jost', sans-serif;
}

.cover_bd_content_1 p:nth-child(2){
    font-size: 72px;
    font-weight: 700;
    margin-bottom: 20px;
    font-family: 'Jost', sans-serif;
    color: #ffffff;
}

.cover_bd_content_1 p:nth-child(3){
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #ffffff;
    font-family: 'Jost', sans-serif;
}

.cover_bd_content_1 p:nth-child(4) span {
  font-size: 22px;
  color: #e18731;
  font-weight: 400;
  margin-bottom: 60px;
   font-family: 'Jost', sans-serif;
   font-weight: 600;
}

.cover_bd_content_1 p:nth-child(4){
    font-size: 22px;
    color: #ffffff;
    font-weight: 400;
    margin-bottom: 60px;
     font-family: 'Jost', sans-serif;
     font-weight: 600;
}

.cover_bd_content_1_a {
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    column-gap: 20px;
}

.cover_bd_content_1_a a:nth-child(1) {
    padding: 18px 30px;
    font-size: 12px;
    background-color: #e18731;
    color: #ffffff;
}

.cover_bd_content_1_a a:nth-child(2) {
    padding: 14px 26px;
    font-size: 12px;
    border: 4px solid #ffffff;
    color: #ffffff;
    
}


.cover_bd_content_1 {
    width: 100%;
    text-align: center;
}

@keyframes floatAnimation {
    0% {
      transform: translateX(0);
    }
    50% {
      transform: translateX(30px);
    }
    100% {
      transform: translateX(0);
    }
  }

  @keyframes floatAnimationUp {
    0% {
        transform: translateY(0);
      }
      50% {
        transform: translateY(20px);
      }
      100% {
        transform: translateY(0);
      }
  }



    
      @media (max-width: 1024px) {

            .cover_bd_content_1 p:nth-child(4){
                font-size: 16px;
                color: #ffffff;
                font-weight: 400;
                margin-bottom: 60px;
            }
        
          }

        
          @media (max-width: 820px) {

            .cover_bd_content_1 p:nth-child(2){
                font-size: 72px;
                font-weight: 700;

                margin-bottom: 20px;
            }
    
          .cover_bd_content_1 p:nth-child(4){
              font-size: 16px;
              color: #ffffff;
              font-weight: 400;
              margin-bottom: 60px;
          }
            
        }

        @media (max-width: 768px) {

            .cover_bd_content_1 p:nth-child(2){
                font-size: 56px;
                font-weight: 700;
              
                margin-bottom: 20px;
            }
    
          .cover_bd_content_1 p:nth-child(4){
              font-size: 16px;
              color: #ffffff;
              font-weight: 400;
              margin-bottom: 60px;
          }
            
        }

        @media (max-width: 576px) {

            .cover {
                position: relative;
                height: 100vh;
                width: 100%;
        
                background-size: cover;
                background-position: center center;
                z-index: 2;
        
            }


            .cover_bd_content_1 p:nth-child(1){
                font-size: 14px;
                color: #ffffff;
        
                font-weight: 700;
                letter-spacing: 3px;
                margin-bottom: 20px;
                text-align: center;
            }
            
            .cover_bd_content_1 p:nth-child(2){
                font-size: 36px;
                font-weight: 700;

                margin-bottom: 20px;
                text-align: center;
            }
            
            .cover_bd_content_1 p:nth-child(3){
                font-size: 20px;
                font-weight: 700;
                margin-bottom: 20px;
                text-align: center;
            }

            
            
            .cover_bd_content_1 p:nth-child(4){
                font-size: 16px;
                color: #ffffff;
                font-weight: 400;
                margin-bottom: 30px;
                width: 100%;
                text-align: center;
            }

            .cover_bd_content_1_a a:nth-child(1) {
                padding: 18px 30px;
                font-size: 12px;
                background-color: #e18731;
                color: #ffffff;
             
            }
            
            .cover_bd_content_1_a a:nth-child(2) {
                padding: 14px 26px;
                font-size: 12px;
                border: 4px solid #ffffff;
                color: #ffffff;
                display: none;
            }
            
            .cover_bd_content_1_a {
                display: flex;
                align-items: center;
                column-gap: 0px;
                justify-content: center;
                
            }
        }

    .swiper {
        width: 100%;
        height: 100%;
      }

    .swiper .swiper-pagination ,
    .swiper .swiper-button-prev,
    .swiper .swiper-button-next,
    .swiper .swiper-scrollbar {
        opacity: 0;
    }


/* service */

.service {
    padding: 70px 0px;
    background-color: #fff;
}

.service_list_bd {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    row-gap: 10px;  
}

.service_list_bd img {
  width: 50px;
  height: 50px;
}

.service_list_bd a {
    font-size: 16px;
    font-family: 'Jost', sans-serif;
    color: #000000;
    font-weight: 400;
}

.fa-plus {
    color: #000000;
    font-size: 12px;
}


@media (max-width: 821px) {

    .service_list_bd {
        display: grid;
        grid-template-columns: 1fr 1fr;
        row-gap: 10px;  
    }

}

@media (max-width: 576px) {

    .service {
        padding: 30px 0px;
        background-color: #fff;
    }
    

    .service_list_bd {
        display: grid;
        grid-template-columns: 1fr;
        row-gap: 10px;  
    }

}

/* counter */

.counter_main {
    background-color: #fff;
    padding-bottom: 100px;
}

.counter_bd {
    display: grid;
    grid-template-columns:  1fr 1fr 1fr;
    column-gap: 30px;
}

.counter {
    height: 200px; /* 设置计数器元素的高度，模拟滚动到该位置触发效果 */
    margin-bottom: 20px;
    font-size: 116px;
    font-weight: 700;
    color: transparent!important;
    font-family: 'Oswald', sans-serif;
    -webkit-text-stroke-color: #e18731;
    -webkit-text-stroke-width: 2px;
}

.counter_bd_list span {
    height: 200px; /* 设置计数器元素的高度，模拟滚动到该位置触发效果 */
    margin-bottom: 20px;
    font-size: 116px;
    font-weight: 700;
    color: transparent!important;
    font-family: 'Oswald', sans-serif;
    -webkit-text-stroke-color: #e18731;
    -webkit-text-stroke-width: 2px;
}

.counter_bd_list p:nth-child(1) {
    border-bottom: 1px solid #d9dde6;
}

.counter_bd_list p:nth-child(2) {
    margin-top: 30px;
    font-weight: 500;
    color: #4b686a;
    font-size: 20px;
}


@media (max-width: 1024px) {

    
.counter_bd_list span {
    height: 200px; /* 设置计数器元素的高度，模拟滚动到该位置触发效果 */
    margin-bottom: 20px;
    font-size: 86px;
    font-weight: 700;
    color: transparent!important;
    font-family: 'Oswald', sans-serif;
    -webkit-text-stroke-color: #e18731;
    -webkit-text-stroke-width: 2px;
}


.counter_bd_list p:nth-child(2) {
    margin-top: 30px;
    font-weight: 500;
    color: #000000;
    font-size: 18px;
}

}

@media (max-width: 574px) {

    .counter_main {
        background-color: #fff;
        padding-bottom: 40px;
    }
}


@media (max-width: 576px) {

    
    .counter_bd_list span {
        height: 200px; /* 设置计数器元素的高度，模拟滚动到该位置触发效果 */
        margin-bottom: 20px;
        font-size: 86px;
        font-weight: 700;
        color: transparent!important;
        font-family: 'Oswald', sans-serif;
        -webkit-text-stroke-color: #e18731;
        -webkit-text-stroke-width: 2px;
    }

    
.counter_bd_list p:nth-child(1) {
    border-bottom: 1px solid #d9dde6;
    text-align: center;
}
    
    
    .counter_bd_list p:nth-child(2) {
        margin-top: 30px;
        font-weight: 500;
        color: #000000;
        font-size: 18px;
        text-align: center;
    }

    .counter_bd {
        display: grid;
        grid-template-columns:  1fr ;
        column-gap: 30px;
    }
    
    }

/* slider */

:root {
    --marquee-width: 80vw;
    --marquee-height: 40vh;
    /* --marquee-elements: 12; */ /* defined with JavaScript */
    --marquee-elements-displayed: 2;
    --marquee-element-width: calc(var(--marquee-width) / var(--marquee-elements-displayed));
    --marquee-animation-duration: calc(var(--marquee-elements) * 2s);
  }
  
  .marquee {
    width: 100%;
    height: var(--marquee-height);
    background-color: #111;
    color: #eee;
    overflow: hidden;
    position: relative;
    background: url(../images/slide.jpg);
    background-size: cover;
    background-position: center center;
  }
  .marquee:before, .marquee:after {
    position: absolute;
    top: 0;
    width: 10rem;
    height: 100%;
    content: "";
    z-index: 1;
  }
  .marquee:before {
    left: 0;
    background: linear-gradient(to right, #111 0%, transparent 100%);
  }
  .marquee:after {
    right: 0;
    background: linear-gradient(to left, #111 0%, transparent 100%);
  }
  .marquee-content {
    list-style: none;
    height: 100%;
    display: flex;
    animation: scrolling var(--marquee-animation-duration) linear infinite;
  }
  /* .marquee-content:hover {
    animation-play-state: paused;
  } */
  @keyframes scrolling {
    0% { transform: translateX(0); }
    100% { transform: translateX(calc(-1 * var(--marquee-element-width) * var(--marquee-elements))); }
  }

  .marquee-content li {
    display: flex;
    justify-content: center;
    align-items: center;
    /* text-align: center; */
    flex-shrink: 0;
    width: var(--marquee-element-width);
    max-height: 100%;
    font-size: 116px; /* 5rem; */
    white-space: nowrap;
    font-weight: 700;
    color: transparent!important;
    font-family: 'Oswald', sans-serif;
    -webkit-text-stroke-color: #ffffff;
    -webkit-text-stroke-width: 1px;
  }
  
  .marquee-content li img {
    width: 100%;
    /* height: 100%; */
    border: 2px solid #eee;
  }

  @media (max-width: 1280px) {

    :root {
        --marquee-width: 80vw;
        --marquee-height: 40vh;
        /* --marquee-elements: 12; */ /* defined with JavaScript */
        --marquee-elements-displayed: 1.5;
        --marquee-element-width: calc(var(--marquee-width) / var(--marquee-elements-displayed));
        --marquee-animation-duration: calc(var(--marquee-elements) * 2s);
      }

      .marquee-content li {
        display: flex;
        justify-content: center;
        align-items: center;
        /* text-align: center; */
        flex-shrink: 0;
        width: var(--marquee-element-width);
        max-height: 100%;
        font-size: 116px; /* 5rem; */
        white-space: nowrap;
        font-weight: 700;
        color: transparent!important;
        font-family: 'Oswald', sans-serif;
        -webkit-text-stroke-color: #ffffff;
        -webkit-text-stroke-width: 1px;
      }

  }

  @media (max-width: 1024px) {

    :root {
        --marquee-width: 80vw;
        --marquee-height: 40vh;
        /* --marquee-elements: 12; */ /* defined with JavaScript */
        --marquee-elements-displayed: 2;
        --marquee-element-width: calc(var(--marquee-width) / var(--marquee-elements-displayed));
        --marquee-animation-duration: calc(var(--marquee-elements) * 2s);
      }

      .marquee-content li {
        display: flex;
        justify-content: center;
        align-items: center;
        /* text-align: center; */
        flex-shrink: 0;
        width: var(--marquee-element-width);
        max-height: 100%;
        font-size: 67px; /* 5rem; */
        white-space: nowrap;
        font-weight: 700;
        color: transparent!important;
        font-family: 'Oswald', sans-serif;
        -webkit-text-stroke-color: #ffffff;
        -webkit-text-stroke-width: 1px;
      }

  }
  
  @media (max-width: 600px) {


    html { font-size: 12px; }
    :root {
      --marquee-width: 100%;
      --marquee-height: 205px;
      --marquee-elements-displayed: 1;
      --marquee-animation-duration: calc(var(--marquee-elements) * 3s);
    }
    .marquee:before, .marquee:after { width: 5rem; }


    .marquee-content li {
        display: flex;
        justify-content: center;
        align-items: center;
        /* text-align: center; */
        flex-shrink: 0;
        width: var(--marquee-element-width);
        max-height: 100%;
        font-size: 48px; /* 5rem; */
        white-space: nowrap;
        font-weight: 700;
        color: transparent!important;
        font-family: 'Oswald', sans-serif;
        -webkit-text-stroke-color: #ffffff;
        -webkit-text-stroke-width: 1px;
      }

  }

  /* insight */

  .insight {
    padding: 70px 0px;
    background-color: #fff;
  }

  .insight_bd {
    display: grid;
    grid-template-columns: 1fr 1fr ;
    width: 100%;
    column-gap: 100px;
    margin-top: 30px;
  }

  .insight_bd_list {
    width: 100%;
  }

  .insight_bd_list:nth-child(1) {
    justify-self: end;
  }

  .insight_bd_list:nth-child(2) {
    justify-self: start;
  }

  .swiper2 {
    width: 600px;
    height: 400px;
    overflow: hidden;
    border-radius: 10px;
  }

  .swiper2 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .swiper2 .swiper-pagination,
  .swiper2 .swiper-button-prev,
  .swiper2 .swiper-button-next,
  .swiper2 .swiper-scrollbar {
    opacity: 0;
  }

  @media (max-width: 1025px) {

    .insight_bd_list:nth-child(1) {
        justify-self: center;
        display: flex;
        justify-content: center
      }

    .swiper2 {
        width: 900px;
        height: 600px;
        overflow: hidden;
      }

    
      .insight_bd {
        display: grid;
        grid-template-columns: 1fr ;
        width: 100%;
        column-gap: 100px;
        row-gap: 30px;
      }

  }

  @media (max-width: 821px)  {

    .swiper2 {
      width: 700px;
      height: 500px;
      overflow: hidden;
    }

  }

  @media (max-width: 576px) {

    .insight_bd_list:nth-child(1) {
        justify-self: center;
        display: flex;
        justify-content: center;
      }

    .swiper2 {
        width: 350px;
        height: 300px;
        overflow: hidden;
      }


  }

  
  @media (max-width: 376px) {

    .swiper2 {
        width: 330px;
        height: 300px;
        overflow: hidden;
      }
  }

  /* tab */

  .tab {
    overflow: hidden;
    position: relative;
  }
  
  /* Style the buttons inside the tab */
  .tab button {
    background: #ffffff;
    cursor: pointer;
    padding: 14px 10px;
    font-size: 17px;
    position: relative;
    text-align: center !important;
    color: #4b686a;
  }
  
  .tab button::after {
    content: "";
    display: block;
    width: 0;
    height: 2px;
    background-color: #e18731;
    position: absolute;
    bottom: 0;
    transition: width 0.5s;
    }

    .tab button p {
        padding-left: 10px;
        font-weight: 700px
        ;
    }

    .tab button:hover::after {
        width: 100%; /* 在hover时将宽度设置为100% */
    }
  
  /* Create an active/current tablink class */
  .tab button.active::after {
        width: 100%; ;
  }
  
  /* Style the tab content */
  .tabcontent {
    margin-top: 30px;
    display: none;
    padding: 6px 12px;
    -webkit-animation: fadeEffect 1s;
    animation: fadeEffect 1s;
  }
  

  .tabcontent  p {
    font-size:  17px;
    font-weight: 300;
    line-height: 1.5;
    color: #4b686a;
  }
  /* Fade in tabs */
  @-webkit-keyframes fadeEffect {
    from {opacity: 0;}
    to {opacity: 1;}
  }
  
  @keyframes fadeEffect {
    from {opacity: 0;}
    to {opacity: 1;}
  }


  /* step */

  .step {
    background-color: #ffffff;
    padding: 70px 0px;
  }

  .step_bd {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    justify-content: space-between;
  }

  .step_list{
    position: relative;
  }

  .step_list img {
    width: 100px;
    display: block;
    margin: 0 auto;
    margin-bottom: 15px;
  }

  .step_list h3 {
    font-size: 22px;
    font-weight: 500;
    margin-bottom: 15px;
    color: #4b686a;
  }

  .step_list p {
    font-size: 16px;
    font-weight: 400;
    color: #4b686a;
  }

  .step_list:nth-child(1):before,
  .step_list:nth-child(2):before,
  .step_list:nth-child(3):before {
    content: '';
    position: absolute;
    top: 25%;
    right: -30%;
    z-index: 1;
    width: 200px;
    border-bottom: 1px solid #d9dde6;
}

.step_list:nth-child(1)::after,
.step_list:nth-child(2)::after,
.step_list:nth-child(3)::after,
.step_list:nth-child(4)::after
 {
    content: '';
    position: absolute;
    top: 0%;
    right: 25%;
    z-index: 1;
    background-color: #e18731;
    color: #ffffff;
    padding: 5px 11px;
    border-radius: 100px;
}

.step_list:nth-child(1)::after {
  content: '1';
}

.step_list:nth-child(2)::after {
  content: '2';
}

.step_list:nth-child(3)::after {
  content: '3';
}

.step_list:nth-child(4)::after {
  content: '4';
}

@media (max-width: 1025px) {

  .step_bd {
    display: grid;
    grid-template-columns: 1fr 1fr ;
    justify-content: space-between;
  }

  .step_list:nth-child(2):before {
    display: none;
  }

  .step_list:nth-child(1):before,
  .step_list:nth-child(3):before {
    content: '';
    position: absolute;
    top: 25%;
    right: -20%;
    z-index: 1;
    width: 200px;
    border-bottom: 1px solid #d9dde6;
}

}

@media (max-width: 820px) {

  .step_bd {
    display: grid;
    grid-template-columns: 1fr 1fr ;
    justify-content: space-between;
  }

  .step_list:nth-child(2):before {
    display: none;
  }

  .step_list:nth-child(1):before,
  .step_list:nth-child(3):before {
    content: '';
    position: absolute;
    top: 25%;
    right: -30%;
    z-index: 1;
    width: 200px;
    border-bottom: 1px solid #d9dde6;
}

}

@media (max-width: 576px) {

  .step {
    background-color: #ffffff;
    padding: 40px 0px;
    overflow: hidden;
  }

  .step_bd {
    display: grid;
    grid-template-columns: 1fr  ;
    justify-content: space-between;
    row-gap: 50px;
  }

  .step_list:nth-child(2):before {
    display: unset;
  }

  .step_list:nth-child(1):before,
  .step_list:nth-child(3):before {
    content: '';
    position: absolute;
    top: 25%;
    right: -30%;
    z-index: 1;
    width: 200px;
    border-bottom: 1px solid #d9dde6;
}


  .step_list img {
    width: 80px;
    display: block;
    margin: 0 auto;
    margin-bottom: 15px;
  }

}

/* project */

.project {
  background-color: #fff;
  padding: 70px 0px;
}

.project_bd p:nth-child(2) {
  font-size: 18px;
  font-weight: 300;
}

.project_bd p:nth-child(2) span {
  color: #e18731;
  font-weight: 400;
}

.project_bd_icon {
  display: flex;
  justify-content: space-between;
  margin-bottom: 25px;
}


.swiper-slide-p img {
  display: block;
  margin: 0 auto;
  margin-top: 15px;
  max-width: 100px;
}

.swiper3 {
  height: 600px;
  width: 100%;
  overflow: hidden;
  border-radius: 10px;
  position: relative;
  margin-bottom: 25px;
}

.swiper3 .swiper-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.swiper3 .swiper-slide {
  position: relative;
}

.swiper3 .swiper-slide .swiper-slide-p {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  opacity: 1;
  z-index: 1;
  width: 100%;
  background-color: rgb(0, 0, 0,0.5);
  transition: all 0.3s;
  padding: 20px 0px;
}

.swiper3 .swiper-slide .swiper-slide-p:hover {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%,-50%);
  opacity: 0;
  z-index: 1;

}

.swiper3 .swiper-slide .swiper-slide-p p:nth-child(1) {
  color: #ffffff;
  font-size: 40px;
  font-weight: 600;
  text-align: center;
}

.swiper3 .swiper-slide .swiper-slide-p p:nth-child(2) {
  color: #ffffff;
  font-size: 18px;
  font-weight: 400;
  text-align: center;
}

@media (max-width: 821px)  {


  .swiper3 .swiper-slide .swiper-slide-p p:nth-child(1) {
    color: #ffffff;
    font-size: 35px;
    font-weight: 600;
    text-align: center;
  }

  .swiper3 {
    height: 450px;
    width: 100%;
    overflow: hidden;
    border-radius: 10px;
    position: relative;
  }

}

@media (max-width: 576px)  {

  .project {
    background-color: #fff;
    padding: 40px 0px;
  }


  .swiper3 .swiper-slide .swiper-slide-p p:nth-child(1) {
    color: #ffffff;
    font-size: 20px;
    font-weight: 600;
    text-align: center;
  }

  .swiper3 .swiper-slide .swiper-slide-p p:nth-child(2) {
    color: #ffffff;
    font-size: 14px;
    font-weight: 400;
    text-align: center;
  }

  .swiper3 {
    height: 250px;
    width: 100%;
    overflow: hidden;
    border-radius: 10px;
    position: relative;
  }

  .project_bd p:nth-child(2) {
    font-size: 14px;
  }
  
  .swiper-slide-p img {
    display: block;
    margin: 0 auto;
    margin-top: 15px;
    max-width: 50px;
  }
}

/* tech */

.tech {
  background-color: #fff;
  padding: 70px 0px;
}

.tech_bd_list {
  align-self: center;
}

.tech_bd {
  display: grid;
  grid-template-columns:  1fr 1fr;
  margin-top: 30px;
  column-gap: 20px;
}

.tech_bd_list img {
  width: 100%;
  border-radius: 10px;
}

.tech_bd_list h3 {
  color: #e18731;
  font-size: 30px;
  margin-bottom: 20px;
}

.tech_bd_list ul {
  margin-bottom: 20px;
}

.tech_bd_list ul li p {
  color: #000000;
  font-size: 18px;
  margin-bottom: 10px;
  font-weight: 300;
}


.tech_bd_list ul li i {
  color: #ffffff;
  font-size: 14px;
  background-color: #e18731;
  padding: 5px 6px;
  border-radius: 50px;
}

.tech_bd_list p {
  color: #4b686a;
  font-size: 18px;
  margin-bottom: 10px;
}

@media (max-width: 1025px)  {

  .tech_bd {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: 30px;
    column-gap: 20px;
    row-gap: 30px;
  }
  
  .tech_bd_list {
    order: 1; /* 默认顺序为2，将第二个.tech_bd_list放在第一个前面 */
  }
  
  .tech_bd_list:first-child {
    order: 2; /* 将第一个.tech_bd_list放在第二个后面 */
  }

}

@media (max-width: 576px)  {

  .tech {
    background-color: #fff;
    padding: 40px 0px;
  }
  
}