/* About page - based on the 1920px PSD
 * History image: put your own file next to this stylesheet or replace --about-history-bg.
 */

:root {
    --about-blue: #01386e;
    --about-deep-blue: #064b82;
    --about-text: #010101;
    --about-muted: #333333;
    --about-line: #e6e9ed;
}

.max1500 {
    width: calc(100% - 48px);
    max-width: 1500px;
    margin-right: auto;
    margin-left: auto;
}

.text-center {
    text-align: center;
}

.overflow {
    overflow: hidden;
}

.clamp2,
.clamp3,
.clamp4 {
    display: -webkit-box;
    overflow: hidden;
    -webkit-box-orient: vertical;
}

.clamp2 { -webkit-line-clamp: 2; }
.clamp3 { -webkit-line-clamp: 3; }
.clamp4 { -webkit-line-clamp: 4; }

.page-banner {
    position: relative;
    height: clamp(320px, 26.05vw, 500px);
    overflow: hidden;
    background: #0c456f;
}

.page-banner > img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.page-banner::after {
    position: absolute;
    inset: 0;
    background: rgba(0, 44, 82, .28);
    pointer-events: none;
    content: "";
}

.banner-fix {
    position: absolute;
    z-index: 1;
    inset: 0;
    color: #fff;
}

.banner-fix .fll-con {
    padding-top: clamp(145px, 11.75vw, 226px);
}

.banner-fix h4 {
    position: relative;
    margin: 0;
    padding-bottom: 35px;
    font-size: clamp(28px, 2.29vw, 44px);
    font-weight: bold;
    line-height: 1.2;
    font-family: "Arial";
    text-transform: uppercase;
}

.banner-fix h4::after {
    position: absolute;
    bottom: 15px;
    left: 0;
    width: 32px;
    height: 4px;
    background: #fff;
    content: "";
}

.banner-fix p {
    max-width: 1000px;
    margin: 0;
    font-family: "Arial";
    font-size: clamp(18px, 1.66vw, 32px);
    font-weight: bold;
    line-height: 1.45;
}

.banner-mbx{
    position: absolute;
    left: 0px;
    bottom: 1.56vw;
    z-index: 9;
    color: rgba(255, 255, 255, .6);
    font-size: 16px;
    font-family: "Arial";
    width: 100%;
}
.banner-mbx *{
    font-family: "Arial";
}
.banner-mbx a{
     color: rgba(255, 255, 255, .6);
}



/*  */
.about-title h3 {
    margin: 0;
    color: var(--about-text);
    font-size: clamp(28px, 2.5vw, 48px);
    font-weight: 600;
    line-height: 1.25;
    text-transform: uppercase;
}

.about-title p {
    max-width: 1000px;
    margin: 10px auto 0;
    color: var(--about-muted);
    font-size: 18px;
    line-height: 1.7;
}

/* Company profile */
.about1 {
    padding: 116px 0 0;
    background: #fff;
}

.about1-txt {
    margin-top: 42px;
    color: #333333;
    font-size: 18px;
    line-height: 1.7;
}

.about1-txt > :first-child { margin-top: 0; }
.about1-txt > :last-child { margin-bottom: 0; }

.number1 {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin: 57px 0 60px;
    padding: 0;
    list-style: none;
}

.number1 li {
    min-width: 171px;
}

.number1 h3 {
    position: relative;
    margin: 0 0 22px;
    padding-bottom: 24px;
    color: var(--main-theme-color);
    font-size: 0;
    font-weight: 700;
    line-height: 1;
    border-bottom: 1px solid #cce3f3;
}

.number1 h3::after {
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 59%;
    height: 1px;
    background: #01386e;
    content: "";
}

.number1 h3 i {
    font-size: clamp(30px, 2.5vw, 48px);
    font-style: normal;
}

.number1 h3 span {
    margin-left: 9px;
    color: #333333;
    font-size: 18px;
    font-weight: 400;
}

.number1 p {
    margin: 0;
    color: #666666;
    font-size: 18px;
    line-height: 1.5;
}

.number1 li:hover i.counter{
    text-shadow: 0px 10px 18px rgba(0, 114, 195, 0.8);
}



.about1-img {
    overflow: hidden;
    border-radius: 10px;
}

.about1-img img {
    display: block;
    width: 100%;
    height: auto;
    min-height: 360px;
    object-fit: cover;
}

/* Corporate culture */
.about2 {
    padding: 120px 0 116px;
    background: #fff;
}

.about2-list {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 44px;
    margin: 58px 0 0;
    padding: 0;
    list-style: none;
}

.about2-list li {
    position: relative;
    min-height: 453px;
    overflow: hidden;
    padding: 58px 38px 38px;
    color: var(--about-deep-blue);
    background-size: cover !important;
    border-radius: 10px;
    background-color: rgb(244, 246, 251);
    box-shadow: 0px 6px 8px 0px rgba(7, 20, 59, 0.2);
}

.about2-list li > *{
    z-index: 9;
    position: relative;
}

.about2-list li::before{
    position: absolute;
    left: 0px;
    bottom: 0px;
    width: 100%;
    height: 0px;
    content: "";
    background: rgba(1, 56, 110, 0.8);
    transition: all .3s ease;
    z-index: 1;
}

.about2-list li:hover *{
    color: #fff;
}

.about2-list li:hover::before{
    height: 100%;
}

.about2-list li:hover .num img{
     filter: brightness(0) invert(1);
    /* 兼容旧版 Safari 和 iOS */
    -webkit-filter: brightness(0) invert(1);
    /* 兼容旧版 Firefox */
    -moz-filter: brightness(0) invert(1);
    /* 兼容旧版 IE */
    filter: gray; /* IE 6-9 */
    -ms-filter: "progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)"; /* IE 10+ */
}

.about2-list .text {
    position: relative;
    z-index: 1;
}

.about2-list .num {
    margin-bottom: 28px;
    font-size: 48px;
    font-weight: 700;
    font-style: italic;
    line-height: 1;
}

.about2-list h3 {
    margin: 0 0 15px;
    font-size: 24px;
    font-weight: 500;
    line-height: 1.45;
    color: #000000;
}

.about2-list .pp {
    font-size: 16px;
    line-height: 1.7;
    color: #999999;
}

.about2-list .pp p {
    margin: 0;
}

/* Development history */
.about3 {
    min-height: 913px;
    padding: 96px 0 70px;
    color: #fff;
    background-color: #185e91;
    background-image: url(//wm.cdn.cn86.cn/atgreducerwmy/2026/07/0b694a1270h8hmbh.jpg);
    background-repeat: no-repeat;
    background-position: center bottom;
    background-size: cover;
}

.about-title3 h3,
.about-title3 p {
    color: #fff;
}

.about-title3 p {
    margin-top: 17px;
}

.about3-list {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    margin: 49px 0 0;
    padding: 0;
    list-style: none;
}

.about3-list li {
    position: relative;
    min-height: 345px;
    padding: 0 30px 28px;
    border-left: 1px solid;
    border-image: linear-gradient(to bottom,rgba(255, 255, 255, .52), transparent) 1;
}

.about3-list li::before {
    position: absolute;
    top: -9px;
    left: -9px;
    width: 18px;
    height: 18px;
    background: #fff;
    border: 5px solid rgba(40, 126, 178, .96);
    border-radius: 50%;
    box-shadow: 0 0 0 1px #fff;
    content: "";
}

.about3-list li:nth-child(1) { transform: translateY(205px); }
.about3-list li:nth-child(2) { transform: translateY(60px); }
.about3-list li:nth-child(3) { transform: translateY(131px); }
.about3-list li:nth-child(4) { transform: translateY(0); }


.about3-list li > .text{
    margin-top: -25px;
}

.about3-list h3 {
    margin: 0 0 38px;
    font-size: clamp(24px, 2.083vw, 40px);
    font-weight: 600;
    line-height: 1.2;
}

.about3-list h3 span {
    margin-left: 8px;
    font-size: 14px;
    font-weight: 400;
}

.about3-list .pp {
    max-width: 290px;
    font-size: 18px;
    line-height: 1.55;
}

.about3-list .pp p {
    margin: 0;
}

/* Production capacity */
.about4 {
    padding: 94px 0 108px;
    background: #fff;
}

.about-title4 p {
    max-width: 1000px;
    margin-top: 17px;
    line-height: 1.45;
}

.about4-wap {
    position: relative;
    margin-top: 62px;
}

.about4-swiper .swiper-slide {
    overflow: hidden;
    border-radius: 10px;
}

.about4-swiper img {
    display: block;
    width: 100%;
    aspect-ratio: 482 / 323;
    object-fit: cover;
}

.about4-wap .wiia {
    position: absolute;
    z-index: 3;
    top: 50%;
    right: -78px;
    left: -78px;
    height: 0;
    pointer-events: none;
}

.about4-wap .swiper-button-next,
.about4-wap .swiper-button-prev {
    position: absolute;
    top: 0;
    width: 49px;
    height: 49px;
    margin: -24px 0 0;
    background-color: #fff;
    background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAOCAYAAAAmL5yKAAAA90lEQVR42p3ToUoEYRTF8d9+rEFBFjS4Rl9ADJZPsAiC+AQWDbJaNnwPoS8wyIJNwWw3WyaJCIogrNEkFpMszFg2DIuuM950wzmX/+He2yrL0m8VYgq4xnuRZ0c/akyvEnfohZguQ0wzk4L2NHeRZyVOQ0wfGKDAYVXTmhZhIk4fZ7hCr8izUZ0IVZoB+jjAeWOCCskWbnCBfjvEtI9NjGr4W3jFG47RaWMXew0gPvE17nf+E2EZt+hgu9GAENMcHtDFWpFnw9DA3MUTFrFR5Nmw9hZCTAu4xxJWizx7qXvKQkwreMY81qvmP095/EwnmB1jP05qvgH46VGEbjo4UgAAAABJRU5ErkJggg==");
    background-repeat: no-repeat;
    background-position: center;
    border: 1px solid #c9d3dc;
    border-radius: 50%;
    cursor: pointer;
    pointer-events: auto;
    transition: background-color .25s, border-color .25s;
}

.about4-wap .swiper-button-prev {
    left: 0;
    transform: rotate(180deg);
}

.about4-wap .swiper-button-next {
    right: 0;
}

.about4-wap .swiper-button-next::after,
.about4-wap .swiper-button-prev::after {
    display: none;
}

.about4-wap .swiper-button-next:hover,
.about4-wap .swiper-button-prev:hover {
    background-color: var(--about-blue);
    background-image: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAOCAYAAAAmL5yKAAAAtElEQVR42p2QPQ4BURRGzzDRiMIeJGzET2xAIjqNymJUlGgUViGWYB0SHZNwFJ5EJmaY+ZJbvXfO++5DJWP6aqK2c+6QdTBQ7+pJbRQV9HzloMZ58DfBMNQ+qvVfcFrQDS8f1co/8KdgqN7UVRFYJVKnwBKIgQWQAE1+JwIuMdANsEAP6PB/zu8qu7D/qEj9zz+oqusgmZQRvGcfJOOygpq6VR/qrIwg3WReVlBTN+pVbeUJnq8/XpWKUjjhAAAAAElFTkSuQmCC");
    border-color: var(--about-blue);
}

.about4-wap .swiper-button-next:hover{
    transform: rotate(180deg)
}
.about4-wap .swiper-button-prev:hover{
    transform: rotate(0deg)
}


.about4-wap .swiper-button-disabled {
    opacity: .42;
    cursor: default;
}

/* Patent certificate */
.about5 {
    padding: 96px 0 126px;
    background: #f5f7fa;
}

.about5-swiper {
    position: relative;
    margin-top: 62px;
    padding-bottom: 77px;
}

.about5-swiper .swiper-slide {
    display: flex;
    align-items: center;
    justify-content: center;
}

.about5-swiper img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 377px;
    object-fit: contain;
    cursor: pointer;
}

.about5-swiper .swiper-pagination {
    bottom: 0;
}

.about5-swiper .swiper-pagination-bullet {
    width: 10px;
    height: 10px;
    margin: 0 16px !important;
    background: #c7d0d8;
    opacity: 1;
}

.about5-swiper .swiper-pagination-bullet-active {
    background: var(--about-blue);
    box-shadow:0 0 0 6px #fff,0 0 0 7px var(--about-blue);
}


@media (max-width: 1680px) {
    .about4-wap .wiia {
        right: -62px;
        left: -62px;
    }
}

@media (max-width: 1366px) {
    .max1500 {
        width: calc(100% - 64px);
    }

    .number1,
    .about2-list {
        gap: 30px;
    }

    .about4-wap .wiia {
        right: 16px;
        left: 16px;
    }
}

@media (max-width: 1023px) {
    .about1,
    .about2,
    .about4,
    .about5 {
        padding-top: 80px;
    }

    .about1-txt {
        margin-top: 45px;
    }

    .number1 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 38px 50px;
    }

    .about2-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 24px;
    }

    .about2-list li {
        min-height: 400px;
    }

    .about2-list li:nth-child(4) {
        color: var(--about-deep-blue);
    }

    .about3 {
        min-height: 760px;
        padding-top: 76px;
    }

    .about3-list li {
        padding-right: 18px;
        padding-left: 22px;
    }

    .about3-list li:nth-child(1) { transform: translateY(150px); }
    .about3-list li:nth-child(2) { transform: translateY(45px); }
    .about3-list li:nth-child(3) { transform: translateY(95px); }

    .about3-list h3 {
        margin-bottom: 25px;
    }

    .about4-wap,
    .about5-swiper {
        margin-top: 45px;
    }
}

@media (max-width: 767px) {
    .max1500 {
        width: calc(100% - 36px);
    }

    .page-banner {
        height: 280px;
    }

    .banner-fix .fll-con {
        padding-top: 115px;
    }

    .banner-fix h4 {
        padding-bottom: 20px;
    }

    .about-title h3 {
        font-size: 26px;
    }

    .about-title p {
        margin-top: 10px;
        font-size: 14px;
        line-height: 1.55;
    }

    .about1,
    .about2,
    .about4,
    .about5 {
        padding-top: 58px;
    }

    .about1-txt {
        margin-top: 32px;
        font-size: 14px;
        line-height: 1.8;
    }

    .number1 {
        gap: 28px 22px;
        margin: 40px 0;
    }

    .number1 h3 {
        margin-bottom: 14px;
        padding-bottom: 16px;
    }

    .number1 h3 i {
        font-size: 28px;
    }

    .number1 h3 span {
        display: block;
        margin: 7px 0 0;
    }

    .about1-img img {
        min-height: 220px;
    }

    .about2 {
        padding-bottom: 58px;
    }

    .about2-list {
        grid-template-columns: 1fr;
        margin-top: 35px;
    }

    .about2-list li {
        min-height: 390px;
        padding: 42px 30px 30px;
    }

    .about3 {
        min-height: 0;
        padding: 58px 0 70px;
        background-position: 62% bottom;
    }

    .about3-list {
        display: block;
        margin-top: 45px;
        padding-left: 10px;
    }

    .about3-list li,
    .about3-list li:nth-child(n) {
        min-height: 0;
        margin: 0;
        padding: 0 0 42px 28px;
        transform: none;
    }

    .about3-list li:last-child {
        padding-bottom: 0;
    }

    .about3-list h3 {
        margin-bottom: 17px;
        font-size: 24px;
    }

    .about3-list .pp {
        max-width: none;
        font-size: 14px;
    }

    .about4 {
        padding-bottom: 72px;
    }

    .about4-wap {
        margin-top: 34px;
        padding-bottom: 67px;
    }

    .about4-wap .wiia {
        top: auto;
        right: 50%;
        bottom: 24px;
        left: auto;
        width: 116px;
        transform: translateX(50%);
    }

    .about4-wap .swiper-button-next,
    .about4-wap .swiper-button-prev {
        width: 42px;
        height: 42px;
        margin-top: -21px;
    }

    .about5 {
        padding-bottom: 75px;
    }

    .about5-swiper {
        margin-top: 36px;
        padding-bottom: 57px;
    }
}

@media (max-width: 479px) {
    .number1 {
        grid-template-columns: 1fr;
    }

    .number1 h3::after {
        width: 42%;
    }

    .about2-list li {
        min-height: 340px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .about4-wap .swiper-button-next,
    .about4-wap .swiper-button-prev {
        transition: none;
    }
}