@media (max-width: 768px) {
  html {
    font-size: calc(100vw / 18);
  }
}
@media (min-width: 768px) and (max-width: 1358.99px) {
  html {
    font-size: calc(100vw / 19.5);
  }
}
@media (min-width: 1359px) and (max-width: 1401.99px) {
  html {
    font-size: calc(100vw / 19.2);
  }
}
@media (min-width: 1402px) and (max-width: 1681.99px) {
  html {
    font-size: calc(100vw / 18.8);
  }
}
@media (min-width: 1682px) and (max-width: 1921.99px) {
  html {
    font-size: calc(100vw / 19.2);
  }
}
@media (min-width: 1922px) and (max-width: 4000px) {
  html {
    font-size: calc(100vw / 25.6);
  }
}
/* 手机 */
@media (max-width: 768px) {
  /* banner */
  .banner {
    width: 100%;
    height: 100%;
  }
  .banner .sabuubanner {
    width: 100%;
    height: 100%;
  }
  .banner .sabuubanner .con {
    position: relative;
    height: 12rem;
  }
  .banner .sabuubanner .con .mySwiper_banner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 12rem;
    overflow: hidden;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide {
    width: 100% !important;
    position: relative;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide .tupiandde {
    width: 100%;
    height: 12rem;
    overflow: hidden;
    position: relative;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide .tupiandde img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 100%;
    transition: 0.8s linear 1s;
    transform: scale(1);
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide .tupiandde::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, #1a74c5, #1a75c5af, #4495e100);
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide .w-1517 {
    position: absolute;
    top: 5rem;
    left: 5%;
    width: 100%;
    margin: 0 auto;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide .w-1517 h3 {
    width: 100%;
    font-size: 0.93333333rem;
    color: #fff;
    margin-bottom: 0.66666667rem;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide .w-1517 p {
    font-size: 0.66666667rem;
    color: #fff;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide-active .tupiandde img {
    transition: 4.5s linear;
    transform: scale(1.05);
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide-duplicate-active .tupiandde img {
    transition: 4.5s linear;
    transform: scale(1.05);
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-pagination {
    bottom: 1.33333333rem;
    width: 100%;
    display: flex;
    justify-content: center;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-pagination .swiper-pagination-bullet {
    width: 1.33333333rem;
    height: 0.33333333rem;
    margin-right: 0.33333333rem;
    display: inline-block;
    background: #ffffff9e;
    border: 0;
    border-radius: 0;
    opacity: 1;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-pagination .swiper-pagination-bullet:last-child {
    margin-right: 0;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-pagination .swiper-pagination-bullet-active {
    opacity: 1;
    background: #1187cc86;
    border: 0;
    border-radius: 0;
  }
  .banner .sabuubanner .con1 {
    display: none;
  }
  /* 核心业务 */
  .hexinyewu {
    width: 100%;
    height: 100%;
    padding: 10% 5%;
    background-position: top;
    background-repeat: no-repeat;
    background-size: cover;
  }
  .hexinyewu .w-1320 {
    width: 100%;
    margin: 0 auto;
  }
  .hexinyewu .w-1320 .ascuanc {
    margin-bottom: 1.33333333rem;
    text-align: center;
  }
  .hexinyewu .w-1320 .ascuanc h3 {
    text-align: center;
    font-size: 1.33333333rem;
    font-weight: 400;
    color: #000;
    margin-bottom: 0.66666667rem;
  }
  .hexinyewu .w-1320 .ascuanc .acsnauic {
    text-align: center;
    font-size: 0.8rem;
    color: #333;
  }
  .hexinyewu .w-1320 .aciainscon {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 0.66666667rem;
    gap: 0.66666667rem;
  }
  .hexinyewu .w-1320 .aciainscon .qcysa {
    width: 47%;
    background-color: #fff;
    transition: all 0.5s;
    padding-bottom: 0.66666667rem;
    margin-bottom: 0.66666667rem;
    border: 0.03333333rem solid #eee;
  }
  .hexinyewu .w-1320 .aciainscon .qcysa a {
    display: block;
  }
  .hexinyewu .w-1320 .aciainscon .qcysa a .service-item .service-image {
    width: 100%;
    height: 6rem;
    overflow: hidden;
    display: block;
    margin: 0 auto 0.66666667rem;
  }
  .hexinyewu .w-1320 .aciainscon .qcysa a .service-item .service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1);
    transition: all 0.5s;
  }
  .hexinyewu .w-1320 .aciainscon .qcysa a .service-item .service-title {
    margin-bottom: 0.33333333rem;
    text-align: center;
    font-size: 0.66666667rem;
    color: #000;
    padding: 0 0.33333333rem;
  }
  .hexinyewu .w-1320 .aciainscon .qcysa a .service-item .service-subTitle {
    font-size: 0.53333333rem;
    color: #333;
    text-align: center;
    padding: 0 0.33333333rem;
  }
  .hexinyewu .w-1320 .gengduaohzuan {
    width: 5.33333333rem;
    height: 1.33333333rem;
    margin: 0 auto;
    background-color: #111928;
    border-radius: 3.33333333rem;
    padding: 0.33333333rem 0;
    transition: all 0.5s;
  }
  .hexinyewu .w-1320 .gengduaohzuan .more {
    width: 5.33333333rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.66666667rem;
    transition: all 0.5s;
  }
  .hexinyewu .w-1320 .gengduaohzuan .more .ascai {
    font-size: 0.66666667rem;
    color: #fff;
    transition: all 0.5s;
  }
  .hexinyewu .w-1320 .gengduaohzuan .more i {
    display: block;
    width: 0.8rem;
    height: 0.8rem;
    transition: all 0.5s;
  }
  .hexinyewu .w-1320 .gengduaohzuan .more i .icon {
    display: block;
    width: 0.8rem;
    height: 0.8rem;
    fill: #fff;
    transition: all 0.5s;
  }
  /* 企业实力 */
  .qyshili {
    width: 100%;
    height: 100%;
    padding: 10% 5%;
    background: linear-gradient(45deg, #1a74c5, #4496e1);
  }
  .qyshili .w-1320 {
    width: 100%;
    margin: 0 auto;
  }
  .qyshili .w-1320 .ascuanc {
    margin-bottom: 1.33333333rem;
    text-align: center;
  }
  .qyshili .w-1320 .ascuanc h3 {
    text-align: center;
    font-size: 1.33333333rem;
    font-weight: 400;
    color: #fff;
    margin-bottom: 0.66666667rem;
  }
  .qyshili .w-1320 .ascuanc .acsnauic {
    text-align: center;
    font-size: 0.8rem;
    color: #fff;
  }
  .qyshili .w-1320 .shuzizhuanshi {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    row-gap: 1.33333333rem;
  }
  .qyshili .w-1320 .shuzizhuanshi .shuzhusiwiheia {
    width: 47%;
  }
  .qyshili .w-1320 .shuzizhuanshi .shuzhusiwiheia .achievement-item {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
  }
  .qyshili .w-1320 .shuzizhuanshi .shuzhusiwiheia .achievement-item .achievement-number {
    width: 100%;
    text-align: center;
    font-size: 1.33333333rem;
    color: #fff;
    font-weight: 600;
    margin-bottom: 0.66666667rem;
  }
  .qyshili .w-1320 .shuzizhuanshi .shuzhusiwiheia .achievement-item .achievement-text {
    width: 100%;
    text-align: center;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
  }
  /* 企业资质 */
  .qyzz {
    width: 100%;
    height: 100%;
    padding: 10% 5%;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    overflow: hidden;
  }
  .qyzz .w-1320 {
    width: 100%;
    margin: 0 auto;
  }
  .qyzz .w-1320 .ascuanc {
    margin-bottom: 1.33333333rem;
    text-align: center;
  }
  .qyzz .w-1320 .ascuanc h3 {
    text-align: center;
    font-size: 1.33333333rem;
    font-weight: 400;
    color: #000;
    margin-bottom: 0.66666667rem;
  }
  .qyzz .w-1320 .ascuanc .acsnauic {
    text-align: center;
    font-size: 0.8rem;
    color: #333;
  }
  .qyzz .swiper_qyzz .swiper-wrapper {
    display: flex;
    align-items: center;
  }
  .qyzz .swiper_qyzz .swiper-wrapper .swiper-slide .imgschauncu {
    width: 100%;
    height: 10rem;
  }
  .qyzz .swiper_qyzz .swiper-wrapper .swiper-slide .imgschauncu img {
    width: 100%;
    height: 100%;
    object-fit: contain;
  }
}
/* pc */
@media (min-width: 768px) {
  /* banner */
  .banner {
    width: 100%;
    height: 90vh;
  }
  .banner .sabuubanner {
    width: 100%;
    height: 100%;
  }
  .banner .sabuubanner .con {
    position: relative;
    height: 100%;
    /* ✅ 不再重复 100vh，跟随父级 */
  }
  .banner .sabuubanner .con .mySwiper_banner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* ✅ 跟随父级一屏 */
    overflow: hidden;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper {
    height: 100%;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide {
    width: 100% !important;
    height: 100%;
    position: relative;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide .tupiandde {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
    z-index: 10;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide .tupiandde img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 100%;
    transition: 0.8s linear 1s;
    transform: scale(1);
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide .tupiandde::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, #1a74c5, #1a75c5af, #4495e100);
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide .w-1517 {
    position: absolute;
    z-index: 25;
    /* ✅ 关键：top 不能固定 450rem，必须随屏幕高度变化且保证装得下 */
    top: clamp(1.6rem, 38vh, 4.5rem);
    width: 100%;
    margin: 0 auto;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide .w-1517 h3 {
    text-align: center;
    width: 100%;
    font-size: 0.82rem;
    color: #fff;
    font-weight: 500;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide .w-1517 p {
    text-align: center;
    font-size: 0.38rem;
    color: #fff;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide-active .tupiandde img {
    transition: 4.5s linear;
    transform: scale(1.05);
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-wrapper .swiper-slide-duplicate-active .tupiandde img {
    transition: 4.5s linear;
    transform: scale(1.05);
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-pagination {
    bottom: 0.5rem;
    width: 100%;
    display: flex;
    justify-content: center;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-pagination .swiper-pagination-bullet {
    width: 1rem;
    height: 0.1rem;
    margin-right: 0.1rem;
    display: inline-block;
    background: #ffffff9e;
    border: 0;
    border-radius: 0;
    opacity: 1;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-pagination .swiper-pagination-bullet:last-child {
    margin-right: 0;
  }
  .banner .sabuubanner .con .mySwiper_banner .swiper-pagination .swiper-pagination-bullet-active {
    opacity: 1;
    background: #1187cc86;
    border: 0;
    border-radius: 0;
  }
  .banner .sabuubanner .con1 {
    display: none;
  }
  /* 核心业务 */
  .hexinyewu {
    width: 100%;
    height: 100%;
    padding: 1.1rem 0 0.8rem;
    background-position: top;
    background-repeat: no-repeat;
    background-size: cover;
  }
  .hexinyewu .w-1320 {
    width: 13.2rem;
    margin: 0 auto;
  }
  .hexinyewu .w-1320 .ascuanc {
    margin-bottom: 0.8rem;
    text-align: center;
  }
  .hexinyewu .w-1320 .ascuanc h3 {
    text-align: center;
    font-size: 0.5rem;
    font-weight: 400;
    color: #000;
    margin-bottom: 0.2rem;
  }
  .hexinyewu .w-1320 .ascuanc .acsnauic {
    text-align: center;
    font-size: 0.2rem;
    color: #333;
  }
  .hexinyewu .w-1320 .aciainscon {
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
  }
  .hexinyewu .w-1320 .aciainscon .qcysa {
    width: 50%;
    background-color: #ffffff00;
    transition: all 0.5s;
    padding-bottom: 0.3rem;
  }
  .hexinyewu .w-1320 .aciainscon .qcysa a {
    display: block;
  }
  .hexinyewu .w-1320 .aciainscon .qcysa a .service-item .service-image {
    width: 100%;
    height: 4rem;
    overflow: hidden;
    display: block;
    margin: 0 auto 0.3rem;
  }
  .hexinyewu .w-1320 .aciainscon .qcysa a .service-item .service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1);
    transition: all 0.5s;
  }
  .hexinyewu .w-1320 .aciainscon .qcysa a .service-item .service-title {
    margin-bottom: 0.1rem;
    text-align: center;
    font-size: 0.3rem;
    color: #000;
  }
  .hexinyewu .w-1320 .aciainscon .qcysa a .service-item .service-subTitle {
    font-size: 0.18rem;
    color: #333;
    text-align: center;
  }
  .hexinyewu .w-1320 .aciainscon .qcysa:hover {
    background-color: #ffffff;
    transform: translateY(-0.1rem);
    box-shadow: 0 0.12rem 0.24rem rgba(0, 0, 0, 0.12);
  }
  .hexinyewu .w-1320 .aciainscon .qcysa:hover a .service-item .service-image img {
    transform: scale(1.05);
    transition: all 0.5s;
  }
  /* 企业实力 */
  .qyshili {
    width: 100%;
    height: 100%;
    padding: 1.1rem 0;
    background: linear-gradient(45deg, #1a74c5, #4496e1);
  }
  .qyshili .w-1320 {
    width: 13.2rem;
    margin: 0 auto;
  }
  .qyshili .w-1320 .ascuanc {
    margin-bottom: 0.8rem;
    text-align: center;
  }
  .qyshili .w-1320 .ascuanc h3 {
    text-align: center;
    font-size: 0.5rem;
    font-weight: 400;
    color: #fff;
    margin-bottom: 0.2rem;
  }
  .qyshili .w-1320 .ascuanc .acsnauic {
    text-align: center;
    font-size: 0.2rem;
    color: #fff;
  }
  .qyshili .w-1320 .shuzizhuanshi {
    display: flex;
    justify-content: space-between;
  }
  .qyshili .w-1320 .shuzizhuanshi .shuzhusiwiheia {
    width: 25%;
  }
  .qyshili .w-1320 .shuzizhuanshi .shuzhusiwiheia .achievement-item {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
  }
  .qyshili .w-1320 .shuzizhuanshi .shuzhusiwiheia .achievement-item .achievement-number {
    width: 100%;
    text-align: center;
    font-size: 0.6rem;
    color: #fff;
    font-weight: 600;
    margin-bottom: 0.1rem;
  }
  .qyshili .w-1320 .shuzizhuanshi .shuzhusiwiheia .achievement-item .achievement-text {
    width: 100%;
    text-align: center;
    font-size: 0.2rem;
    color: #fff;
  }
  /* 企业资质 */
  .qyzz {
    width: 100%;
    height: 100%;
    padding: 1.1rem 0;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    overflow: hidden;
  }
  .qyzz .w-1320 {
    width: 13.2rem;
    margin: 0 auto;
  }
  .qyzz .w-1320 .ascuanc {
    margin-bottom: 0.8rem;
    text-align: center;
  }
  .qyzz .w-1320 .ascuanc h3 {
    text-align: center;
    font-size: 0.5rem;
    font-weight: 400;
    color: #000;
    margin-bottom: 0.2rem;
  }
  .qyzz .w-1320 .ascuanc .acsnauic {
    text-align: center;
    font-size: 0.2rem;
    color: #333;
  }
  .qyzz .swiper_qyzz .swiper-wrapper {
    display: flex;
    align-items: center;
  }
  .qyzz .swiper_qyzz .swiper-wrapper .swiper-slide .imgschauncu {
    width: 4.2rem;
    height: 3.5rem;
  }
  .qyzz .swiper_qyzz .swiper-wrapper .swiper-slide .imgschauncu img {
    width: 100%;
    height: 100%;
    object-fit: contain;
  }
}