/* ========== 字体引入 ========== */
@font-face {
    font-family: 'Roboto-Medium-12';
    src: url('Roboto-Medium-12.ttf') format('truetype');
}
@font-face {
    font-family: 'OPPOSans-M';
    src: url('OPPOSans-M.ttf') format('truetype');
}

/* ========== 全局基础样式 ========== */
html body {
    font-family: 'OPPOSans-M', sans-serif;
    color: #000000;
    --theme-color: #096eab;
}
html body .bossgoo-header-nav61 .header-pc {
    top: 0;
}

/* ========== 通用标题模块 ========== */
.about_us_yixing .title-wrapper {
    display: flex;
    justify-content: center;
    font-family: 'Roboto-Medium-12', sans-serif;
}
.about_us_yixing .title-wrapper .title {
    position: relative;
}
.about_us_yixing .title-wrapper .title::before {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -24px;
    width: 90px;
    height: 6px;
    background-color: #21ABEA;
    transform: translateX(-50%);
}

/* ========== 头部横幅 about-us-header ========== */
.about_us_yixing .about-us-header {
    background: url(https://bsg-i.nbxc.com/product/99/ee/72/1d2ac1a2b0a6bdb0a5c08397b0.png) no-repeat center / cover;
    aspect-ratio: 1920 / 950;
    position: relative;
}
.about_us_yixing .about-us-header .title-box {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}
.about_us_yixing .about-us-header .title-box::after {
    content: "";
    position: absolute;
    top: 50%;
    right: 0;
    width: 25%;
    height: 20%;
    background-color: #d0e9fd;
    z-index: -1;
}
.about_us_yixing .about-us-header .title-box .wrap {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    height: 100%;
}
.about_us_yixing .about-us-header .title-box .desc {
    position: absolute;
    right: 4%;
    bottom: 4%;
    text-align: right;
}

/* ========== 内容板块 about-us-content ========== */
.about_us_yixing .about-us-content {
    background: url(https://bsg-i.nbxc.com/product/80/d9/71/3d9e111fb4c4cdae2624172ace.png) no-repeat center / cover;
}
.about_us_yixing .about-us-content .wrap {
    display: flex;
    align-items: center;
    color: #fff;
    overflow: hidden;
}
.about_us_yixing .about-us-content .wrap .content-left {
    width: 45%;
}
.about_us_yixing .about-us-content .wrap .content-left .desc {
    line-height: 1.8;
}
.about_us_yixing .about-us-content .wrap .content-right {
    width: 55%;
    padding-left: 8%;
}

/* 数字列表 */
.about_us_yixing .about-us-content .wrap .content-right .number-list {
    display: flex;
    width: 100%;
}
.about_us_yixing .about-us-content .wrap .content-right .number-list .number-item {
    width: calc(100% / 4);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.about_us_yixing .about-us-content .wrap .content-right .number-list .number-item::after {
    content: "";
    position: absolute;
    top: 50%;
    right: 0;
    width: 1px;
    height: 120%;
    background-color: rgba(255,255,255,0.6);
    transform: translateY(-50%);
}
.about_us_yixing .about-us-content .wrap .content-right .number-list .number-item:last-child::after {
    display: none;
}
.about_us_yixing .about-us-content .wrap .content-right .number-list .number-item img {
    width: 100px;
    height: 100px;
    object-fit: contain;
}
.about_us_yixing .about-us-content .wrap .content-right .number-list .number-item .number-info {
    display: flex;
}

/* ========== 为什么选择我们 why-choose-us ========== */
.about_us_yixing .why-choose-us {
    background: url(https://bsg-i.nbxc.com/product/83/da/bf/a2b3d92016fb3e25f15447b8df.png) no-repeat center / cover;
    aspect-ratio: 1920 / 1572;
}
.about_us_yixing .why-choose-us .content {
    width: 50%;
    padding-top: 20%;
    padding-left: 14%;
}
.about_us_yixing .why-choose-us .content .why-choose-us-list {
    width: 70%;
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.about_us_yixing .why-choose-us .content .why-choose-us-list .why-choose-us-item .title-box {
    display: flex;
}
.about_us_yixing .why-choose-us .content .why-choose-us-list .why-choose-us-item .title-box .title {
    position: relative;
}
.about_us_yixing .why-choose-us .content .why-choose-us-list .why-choose-us-item .title-box .title::before {
    content: "";
    position: absolute;
    left: 0;
    bottom: 2px;
    width: 100%;
    max-width: 120px;
    height: 6px;
    background-color: #21ABEA;
}

/* ========== 发展历程 history-box ========== */
.about_us_yixing .history-box {
    background: url(https://bsg-i.nbxc.com/product/53/fc/83/4cbfceeb0db7bdbe228e8b4cf2.png) no-repeat center / cover;
    aspect-ratio: 1920 / 1203;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}
.about_us_yixing .history-box .history-wrapper {
    background: url(https://bsg-i.nbxc.com/product/43/3a/b0/1b1be7ee36a0d9693ce22e0c54.png) no-repeat center / cover;
    aspect-ratio: 1685 / 991;
    color: #fff;
    padding: 2% 2%;
    max-width: 1600px;
}
.about_us_yixing .history-box .history-wrapper .title-warapper .title {
    position: relative;
    display: inline-block;
}
.about_us_yixing .history-box .history-wrapper .title-warapper .title::before {
    content: "";
    position: absolute;
    left: 0;
    bottom: -24px;
    width: 100%;
    max-width: 100px;
    height: 6px;
    background-color: #21ABEA;
}
.about_us_yixing .history-box .history-wrapper .history-content {
    display: flex;
    padding-left: 4%;
}
.about_us_yixing .history-box .history-wrapper .history-content .history-item {
    width: calc(90% / 4);
    padding-left: 40px;
    padding-right: 40px;
    position: relative;
}
.about_us_yixing .history-box .history-wrapper .history-content .history-item::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0%;
    transform: translateX(-50%);
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #fff;
    z-index: 3;
}
.about_us_yixing .history-box .history-wrapper .history-content .history-item::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0%;
    transform: translateX(-50%);
    width: 2px;
    height: 120%;
    background: linear-gradient(to bottom, #fff 50%, rgba(255,255,255,0));
    z-index: 2;
}

/* 历程第一行错位 */
.about_us_yixing .history-box .history-wrapper .history-content1 .history-item:nth-child(2) { transform: translateY(-30%); }
.about_us_yixing .history-box .history-wrapper .history-content1 .history-item:nth-child(3) { transform: translateY(-40%); }
.about_us_yixing .history-box .history-wrapper .history-content1 .history-item:nth-child(4) { transform: translateY(-50%); }

/* 历程第二行 */
.about_us_yixing .history-box .history-wrapper .history-content2 {
    justify-content: flex-end;
}
.about_us_yixing .history-box .history-wrapper .history-content2 .history-item {
    display: flex;
    flex-direction: column-reverse;
    height: 250px;
}
.about_us_yixing .history-box .history-wrapper .history-content2 .history-item .year {
    margin-top: 12px;
}
.about_us_yixing .history-box .history-wrapper .history-content2 .history-item .desc {
    margin-top: auto;
}
.about_us_yixing .history-box .history-wrapper .history-content2 .history-item::before {
    top: 100%;
    transform: translate(-50%, -100%);
}
.about_us_yixing .history-box .history-wrapper .history-content2 .history-item::after {
    height: 100%;
    background: linear-gradient(to bottom, rgba(255,255,255,0) 10%, #fff);
}
.about_us_yixing .history-box .history-wrapper .history-content2 .history-item:nth-child(2) { transform: translateY(-10%); }
.about_us_yixing .history-box .history-wrapper .history-content2 .history-item:nth-child(3) { transform: translateY(-20%); }
.about_us_yixing .history-box .history-wrapper .history-content2 .history-item:nth-child(4) { transform: translateY(-30%); }

/* ========== 团队模块 team-box（默认隐藏） ========== */
.about_us_yixing .team-box {
    overflow: hidden;
    display: none;
}
.about_us_yixing .team-box .team-list {
    display: flex;
    gap: 60px;
}
.about_us_yixing .team-box .team-list .team-item {
    width: calc(100% / 4 - 60px * 3 / 4);
}
.about_us_yixing .team-box .team-list .team-item .image-wrapper {
    aspect-ratio: 500 / 565;
}
.about_us_yixing .team-box .team-list .team-item .image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all .3s ease;
}
.about_us_yixing .team-box .team-list .team-item .team-name {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 2px solid #000;
    font-family: 'Roboto-Medium-12', sans-serif;
}
.about_us_yixing .team-box .team-list .team-item:hover .image-wrapper img {
    transform: scale(1.05);
}

/* ========== 合作伙伴 partners-box ========== */
.about_us_yixing .partners-box {
    background: url(https://bsg-i.nbxc.com/product/3c/e8/a9/5ee74645f7834759447aa0d024.png) no-repeat center / cover;
    aspect-ratio: 1920 / 833;
    padding-top: 4%;
}
.about_us_yixing .partners-box .partners-wrapper {
    width: 80%;
    margin: 0 auto;
    margin-top: 8%;
}
.about_us_yixing .partners-box .partners-wrapper .partners-swiper {
    overflow: hidden;
    padding: 0 2% 12%;
}
.about_us_yixing .partners-box .partners-wrapper .partners-list {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
}
.about_us_yixing .partners-box .partners-wrapper .partners-list .partners-item {
    width: calc(100% / 8 - 30px * 7 / 4);
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #fff;
    overflow: hidden;
    box-shadow: 0 6px 12px rgba(0,0,0,0.25),0 12px 24px rgba(0,0,0,0.2),inset 0 2px 4px rgba(255,255,255,0.25);
}
.about_us_yixing .partners-box .partners-wrapper .partners-list .partners-item img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transform: scale(1.1);
    transition: all .3s ease;
}
.about_us_yixing .partners-box .partners-wrapper .partners-list .partners-item:hover img {
    transform: scale(1.2);
}
.about_us_yixing .partners-box .partners-wrapper .partners-list .partners-item:last-child img {
    transform: scale(3);
}

/* ========== 移动端适配 992px 以下 ========== */
@media screen and (max-width:992px){
    .about-us-body .title-wrapper .title::before {
        bottom: -16px;
        width: 72px;
        height: 4px;
    }
    .about-us-body .about-us-header {
        aspect-ratio: auto;
        min-height: 420px;
    }
    .about-us-body .about-us-header .title-box {
        color: #fff;
    }
    .about-us-body .about-us-header .title-box::after {
        display: none;
    }
    .about-us-body .about-us-header .title-box .wrap {
        justify-content: center;
        padding: 0 24px;
        text-align: center;
    }
    .about-us-body .about-us-content .wrap {
        flex-direction: column;
        gap: 48px;
        padding-left: 24px;
        padding-right: 24px;
    }
    .about-us-body .about-us-content .wrap .content-left,
    .about-us-body .about-us-content .wrap .content-right {
        width: 100%;
    }
    .about-us-body .about-us-content .wrap .content-left {
        text-align: center;
    }
    .about-us-body .about-us-content .wrap .content-right {
        padding-left: 0;
    }
    .about-us-body .about-us-content .wrap .content-right .number-list {
        flex-wrap: wrap;
        gap: 32px 0;
    }
    .about-us-body .about-us-content .wrap .content-right .number-list .number-item {
        width: 50%;
        padding: 0 16px;
    }
    .about-us-body .about-us-content .wrap .content-right .number-list .number-item::after {
        display: none;
    }
    .about-us-body .about-us-content .wrap .content-right .number-list .number-item img {
        width: 72px;
        height: 72px;
    }
    .about-us-body .about-us-content .wrap .content-right .number-list .number-item .number-info {
        justify-content: center;
    }
    .about-us-body .why-choose-us {
        aspect-ratio: auto;
        padding: 6px 24px 60px;
    }
    .about-us-body .why-choose-us .content {
        width: 100%;
        padding-top: 0;
        padding-left: 0;
    }
    .about-us-body .why-choose-us .content .title {
        text-align: center;
    }
    .about-us-body .why-choose-us .content .why-choose-us-list {
        width: 70%;
        margin-top: 56px;
        gap: 16px;
    }
    .about-us-body .why-choose-us .content .why-choose-us-list .why-choose-us-item .title-box .title::before {
        width: 72px;
        height: 4px;
        bottom: -2px;
    }
    .about-us-body .history-box {
        aspect-ratio: auto;
        padding: 40px 24px;
    }
    .about-us-body .history-box .history-wrapper {
        width: 100%;
        aspect-ratio: auto;
        padding: 24px;
    }
    .about-us-body .history-box .history-wrapper .title-warapper {
        text-align: center;
    }
    .about-us-body .history-box .history-wrapper .history-content {
        flex-direction: column;
        gap: 32px;
        padding-left: 0;
        margin-top: 56px;
    }
    .about-us-body .history-box .history-wrapper .history-content .history-item {
        width: 100%;
        height: auto;
        padding-left: 32px;
        padding-right: 0;
        transform: none !important;
    }
    .about-us-body .history-box .history-wrapper .history-content .history-item::before {
        top: 10px;
        left: 0;
    }
    .about-us-body .history-box .history-wrapper .history-content .history-item::after {
        top: 10px;
        left: 0;
        height: calc(100% + 32px);
        background-color: #fff;
    }
    .about-us-body .history-box .history-wrapper .history-content2 {
        justify-content: flex-start;
        margin-top: 0;
    }
    .about-us-body .history-box .history-wrapper .history-content2 .history-item {
        flex-direction: column;
    }
    .about-us-body .history-box .history-wrapper .history-content2 .history-item .year {
        margin-top: 0;
    }
    .about-us-body .history-box .history-wrapper .history-content2 .history-item .desc {
        margin-top: 12px;
    }
    .about-us-body .history-box .history-wrapper .history-content2 .history-item::before {
        top: 10px;
        transform: translateX(-50%);
    }
    .about-us-body .history-box .history-wrapper .history-content2 .history-item:last-child::after {
        display: none;
    }
    .about-us-body .team-box .team-list {
        flex-wrap: wrap;
        gap: 40px 24px;
    }
    .about-us-body .team-box .team-list .team-item {
        width: calc(50% - 12px);
    }
    .about-us-body .partners-box {
        background-image: url(https://bsg-i.nbxc.com/product/99/74/ad/0e588d1fbfc89f28a21d2c44b4.png);
        aspect-ratio: auto;
        padding: 24px 12px 0;
    }
    .about-us-body .partners-box .partners-wrapper {
        width: 100%;
        margin-top: 56px;
    }
    .about-us-body .partners-box .partners-wrapper .partners-swiper {
        padding: 0 0 48px;
    }
    .about-us-body .partners-box .partners-wrapper .partners-list {
        gap: 20px;
    }
    .about-us-body .partners-box .partners-wrapper .partners-list .partners-item {
        width: calc(100% / 4 - 20px * 3 / 4);
    }