.section-item {
    .section-title {
        text-align: center;
        position: relative;

        .title {
            line-height: 56px;
            height: 56px;
            font-weight: 500;
            font-size: 40px;
            color: var(--title-color);
            position: relative;
            z-index: 1;
        }

        .subtitle {
            line-height: 31px;
            font-size: 22px;
            color: var(--subtitle-color);
            margin-top: 19px;
        }

        .bg-title {
            position: absolute;
            z-index: 0;
            top: -16px;
            left: 50%;
            transform: translateX(-50%);
            height: 67px;
            font-weight: 600;
            font-size: 48px;
            background-image: -webkit-linear-gradient(
                270deg,
                rgba(219, 226, 240, 0) 0%,
                #dbe2f0 100%
            );
            background-clip: text;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            will-change: transform;
            transition: transform 0.15s linear;
        }

        .title-line {
            width: 79px;
            height: 5px;
            background: #0077fe;
            border-radius: 12px;
            margin: 21px auto 0;
        }
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 轮播 */
section.top-banner {
    position: relative;
    z-index: 1;
    .swiper-wrapper {
        height: 48.38vw;
    }

    .banner-inner {
        width: 100%;
        height: 100%;
        position: relative;
        z-index: 1;

        /* 图 */
        .banner-inner-bg {
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
        }

        /* 内容 */
        .banner-content {
            position: absolute;
            top: 15.41vw;
            left: 11.56vw;
            z-index: 1;
            will-change: transform;
            transition: transform 0.1s linear;

            /* 标题 */
            .banner-title {
                font-weight: 500;
                font-size: clamp(40px, 3.54vw, 68px);
                color: var(--banner-title-color, var(--title-color));
                line-height: 1.4;
            }

            /* 副标题 */
            .banner-subtitle {
                margin-top: 9px;
                font-size: 24px;
                color: var(--banner-subtitle-color, #2c4f7d);
                line-height: 34px;
                height: 34px;
            }

            /* 按钮 */
            .banner-btn {
                margin-top: 2.91vw;
                display: flex;
                gap: 17px;
            }
        }
    }

    /* 轮播滑块 */
    .banner-scroll {
        position: absolute;
        left: 11.56vw;
        bottom: 14.37vw;
        display: flex;
        z-index: 2;
        will-change: transform;
        transition: transform 0.1s linear;

        .banner-scroll-block {
            margin-right: 7px;
            width: 81px;
            height: 4px;
            background: #c4deff;
            cursor: pointer;

            &.active {
                background: #78aff3;
            }
        }
    }
}

/* 公司介绍 */
.introduction-row {
    display: flex;
    margin: -62px auto 0;
    justify-content: center;
    gap: 34px;
    position: relative;
    z-index: 2;

    .introduction-item {
        min-width: 200px;
        width: 17.6vw;
        display: flex;
        background: linear-gradient(82deg, #ffffff 0%, #eff6ff 100%);
        box-shadow: 0px -1px 12px 0px rgba(132, 154, 209, 0.2);
        border-radius: 10px;
        padding: 13px 22px;
        --img-size: clamp(70px, 5.42vw, 104px);

        .introduction-item-img {
            width: var(--img-size);
            height: var(--img-size);
            object-fit: cover;
        }

        .introduction-item-right {
            margin-left: 12px;
            margin-top: 3px;
        }

        .introduction-value {
            font-size: clamp(28px, 2.08vw, 40px);
            color: var(--title-color);
            font-weight: 500;
            line-height: 1.4;
            white-space: nowrap;

            .unit {
                font-size: clamp(14px, 1.04vw, 20px);
                position: relative;
                top: -3px;
                left: -3px;
            }
        }

        .introduction-title {
            font-size: clamp(14px, 1.04vw, 20px);
            color: #666666;
            margin-top: 2px;
            line-height: 1.4;
            white-space: nowrap;
        }
    }
}

/* 精选案例 */
.case-wrap {
    background-color: #fff;
    padding: 200px 0 119px;

    /* 选项卡区域 */
    .case-tabs {
        display: flex;
        justify-content: center;
        gap: 1.2vw;
        margin-top: 23px;
        flex-wrap: wrap;

        .case-tab-item {
            --icon-size: clamp(24px, 1.67vw, 32px);
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: clamp(150px, 11.46vw, 240px);
            padding: 0.83vw 1.67vw;
            color: var(--text-color);
            cursor: pointer;
            border-radius: 10px;
            background: #f5f7fb;
            transition: all 0.3s ease;
            box-sizing: border-box;

            /* JS未加载时：第一个按钮默认激活 */
            &:first-of-type {
                background: var(--primary-color);
                color: #ffffff;

                .case-tab-icon {
                    .case-tab-img {
                        display: none;

                        &.active {
                            display: block;
                        }
                    }
                }
            }

            /* JS加载后：由 .active 控制激活状态 */
            body.js-loaded & {
                &:first-of-type:not(.active) {
                    background: #f5f7fb;
                    color: var(--text-color);

                    .case-tab-icon {
                        .case-tab-img {
                            display: block;

                            &.active {
                                display: none;
                            }
                        }
                    }
                }
            }

            &.active {
                background: var(--primary-color);
                color: #ffffff;

                .case-tab-icon {
                    .case-tab-img {
                        display: none;

                        &.active {
                            display: block;
                        }
                    }
                }
            }

            .case-tab-icon {
                width: var(--icon-size);
                height: var(--icon-size);

                .case-tab-img {
                    width: 100%;
                    height: 100%;
                    display: block;

                    &.active {
                        display: none;
                    }
                }
            }

            .case-tab-title {
                font-size: clamp(18px, 1.25vw, 24px);
                line-height: 1.41;
                margin-left: 2px;
            }
        }
    }

    /* 内容区域 */
    .case-content-area {
        margin-top: 40px;

        .case-grid {
            grid-template-columns: repeat(3, min(23.96vw, 510px));
            gap: 1.3vw;
            display: none;
            justify-content: center;

            /* JS未加载时：第一个且没有active的显示（降级方案） */
            &:first-of-type:not(.active) {
                display: grid;
            }

            /* JS加载后：只有 .active 的才显示 */
            body.js-loaded & {
                &:first-of-type:not(.active) {
                    display: none;
                }
            }

            &.active {
                display: grid;
                animation: fadeIn 0.5s ease forwards;
            }

            .case-item {
                aspect-ratio: 460 / 312;
                border-radius: 16px;
                overflow: hidden;
                transition:
                    transform 0.3s ease,
                    box-shadow 0.3s ease;

                &:hover {
                    .case-item-title {
                        opacity: 1;
                    }
                }

                .case-item-img {
                    width: 100%;
                    height: 100%;
                    object-fit: cover;
                    display: block;
                }

                .case-item-title {
                    position: absolute;
                    background: rgba(0, 0, 0, 0.6);
                    left: 0;
                    top: 0;
                    bottom: 0;
                    right: 0;
                    display: flex;
                    flex-direction: column;
                    align-items: center;
                    justify-content: center;
                    opacity: 0;
                    transition: 0.3s;
                    text-decoration: none;

                    .title-text {
                        font-weight: 500;
                        font-size: clamp(14px, 1vw, 18px);
                        text-align: center;
                        color: #ffffff;
                        line-height: 1.4;
                        text-decoration: none;
                    }
                    .title-link {
                        color: #6ab0ff;
                        font-size: clamp(12px, 0.8vw, 14px);
                        margin-top: 1px;
                        text-decoration: underline;
                        line-height: 1.5;
                    }
                }
            }
        }
    }
}

/* 核心优势 */
.advantage-wrap {
    background-color: #f5f7fb;
    padding: 94px 5vw 106px;

    .advantage-container {
        max-width: 1430px;
        height: 325px;
        margin: 31px auto 0;
        display: flex;
        gap: 22px;

        .advantage-item {
            width: var(--item-width);
            border-radius: 10px;
            position: relative;
            overflow: hidden;
            box-sizing: border-box;
            display: flex;
            flex-direction: column;
            cursor: pointer;
            transition:
                width 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            will-change: width, transform;

            &:nth-child(5),
            &:nth-child(6) {
                .advantage-item-bg {
                    object-position: right;
                }
            }

            .advantage-item-bg {
                position: absolute;
                width: 100%;
                height: 100%;
                left: 0;
                top: 0;
                object-fit: cover;
                z-index: 0;
                transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            }

            .advantage-item-title {
                --icon-size: clamp(25px, 1.72vw, 33px);
                display: flex;
                flex-direction: column;
                justify-content: center;
                align-items: center;
                position: relative;
                margin-top: 204px;
                z-index: 1;
                transition: margin-top 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
                width: 100%;

                .title-icon {
                    width: var(--icon-size);
                    height: var(--icon-size);
                    object-fit: contain;
                }

                .title {
                    margin-top: 7px;
                    white-space: pre-wrap;
                    text-align: center;
                    line-height: 1.6;
                    font-weight: 500;
                    font-size: clamp(16px, 1vw, 19px);
                    color: #ffffff;
                }
            }
            .summary {
                margin-top: auto;
                font-size: clamp(15px, 0.94vw, 18px);
                color: rgba(255, 255, 255, 0.8);
                line-height: 1.8;
            }

            .subTitle {
                margin-top: 13px;
                font-size: clamp(12px, 0.73vw, 14px);
                color: #76738c;
                line-height: 2.3;
            }

            .summary,
            .subTitle {
                position: relative;
                z-index: 2;
                opacity: 0;
                transform: translateY(10px);
                pointer-events: none;
                transition:
                    opacity 0.4s ease,
                    transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            }

            &.active {
                width: 429px;
                padding: 36px 26px 24px;

                .advantage-item-title {
                    flex-direction: row;
                    margin-top: 0;
                    justify-content: flex-start;
                    transition: margin-top 0.4s
                        cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.2s;

                    .title {
                        margin-top: 0;
                        margin-left: 10px;
                        white-space: nowrap;
                    }
                }

                .summary,
                .subTitle {
                    opacity: 1;
                    transform: translateY(0);
                    transition:
                        opacity 0.4s ease 0.3s,
                        transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
                    pointer-events: auto;
                }
            }
        }
    }
    .advantage-mobile {
        display: none;
    }
}

/* 我们的服务 */
.service-wrap {
    background-color: #fff;
    padding: 108px 0 135px;

    .service-container {
        margin-top: 23px;

        .service-sidebar {
            display: flex;
            justify-content: center;
            gap: 18px;
            flex-wrap: wrap;

            .service-sidebar-item {
                display: flex;
                align-items: center;
                justify-content: center;
                padding: 18px 44px;
                min-width: 316px;
                color: var(--title-color);
                cursor: pointer;
                border-radius: 4px;
                background: #f5f7fb;
                box-sizing: border-box;

                /* JS未加载时：第一个按钮默认激活 */
                &:first-of-type {
                    background: var(--primary-color);
                    color: #ffffff;

                    .service-item-icon {
                        .service-item-img {
                            display: none;

                            &.active {
                                display: block;
                            }
                        }
                    }
                }

                /* JS加载后：由 .active 控制激活状态 */
                body.js-loaded & {
                    &:first-of-type:not(.active) {
                        background: #f5f7fb;
                        color: var(--title-color);

                        .service-item-icon {
                            .service-item-img {
                                display: block;

                                &.active {
                                    display: none;
                                }
                            }
                        }
                    }
                }

                &.active {
                    background: var(--primary-color);
                    color: #ffffff;

                    .service-item-icon {
                        .service-item-img {
                            display: none;

                            &.active {
                                display: block;
                            }
                        }
                    }
                }

                .service-item-icon {
                    width: 32px;
                    height: 32px;

                    .service-item-img {
                        width: 100%;
                        height: 100%;
                        object-fit: contain;
                        display: block;

                        &.active {
                            display: none;
                        }
                    }
                }

                .service-item-title {
                    font-size: 24px;
                    line-height: 31px;
                    height: 34px;
                    margin-left: 6px;
                }
            }
        }

        .content-area {
            width: clamp(1024px, 80vw, 1418.5px);
            height: 468px;
            position: relative;
            margin: 57px auto 0;

            .service-content-item {
                position: absolute;
                height: 100%;
                width: 100%;
                left: 0;
                top: 0;
                display: none;

                /* JS未加载时：第一个且没有active的显示（降级方案） */
                &:first-of-type:not(.active) {
                    display: flex;
                }

                /* JS加载后：只有 .active 的才显示 */
                body.js-loaded & {
                    &:first-of-type:not(.active) {
                        display: none;
                    }
                }

                &.active {
                    display: flex;
                    animation: fadeIn 0.8s ease forwards;
                }

                .service-content-img {
                    width: clamp(380px, 40vw, 714px);
                    height: 100%;
                    flex-shrink: 0;
                    will-change: transform;
                    transition: transform 0.1s linear;
                    overflow: hidden;
                    position: relative;
                    z-index: 0;
                    object-fit: contain;
                    .img {
                        display: block;
                        width: 100%;
                        height: 100%;
                        object-fit: contain;
                        object-position: left top;
                    }
                }

                .service-content-right {
                    margin-left: 58px;
                    flex: 1;
                    display: flex;
                    flex-direction: column;
                    align-items: flex-start;
                    position: relative;
                    z-index: 1;
                    min-width: 590px;
                    flex-shrink: 0;

                    .item-title {
                        font-weight: 600;
                        line-height: 45px;
                        height: 45px;

                        .idx {
                            font-size: 32px;
                            color: var(--primary-color);
                            vertical-align: top;
                        }

                        .text {
                            font-size: 28px;
                            color: var(--title-color);
                            margin-left: 2px;
                        }
                    }

                    .item-subtitle {
                        font-size: 17px;
                        color: #777777;
                        line-height: 28px;
                        margin-top: 8px;
                        padding-right: 32px;
                    }

                    .item-line {
                        height: 2px;
                        background-color: #f6f6f6;
                        margin-top: 27px;

                        &::before {
                            content: '';
                            display: block;
                            width: 40px;
                            height: 5px;
                            background: #0077fe;
                            border-radius: 4px;
                            position: relative;
                            top: -4px;
                        }
                    }

                    .item-list {
                        padding-right: 37px;
                        margin-top: 35px;

                        .list-li-title {
                            margin-bottom: 10px;
                            padding-left: 35px;
                            font-weight: 500;
                            font-size: 20px;
                            color: #666666;
                            line-height: 28px;
                            background: var(--li-icon) no-repeat;
                            background-size: 22px 20px;
                            background-position-y: 5px;
                        }
                        .list-li-text {
                            margin-bottom: 16px;
                            padding-left: 35px;
                            font-size: 18px;
                            color: #666666;
                            line-height: 28px;
                        }
                    }

                    .item-more {
                        margin-top: auto;
                        width: 170px;
                        height: 54px;
                        flex-shrink: 0;
                    }
                }
            }
        }
    }
}

/* 新闻资讯 */
.news-wrap {
    background: linear-gradient(180deg, #e2ecff 0%, #ffffff 100%);
    padding: 79px 0 105px;

    .section-title {
        .bg-title {
            background-image: -webkit-linear-gradient(
                270deg,
                rgba(210, 225, 255, 0) 0%,
                #a8c5ff 100%
            );
        }
    }

    .news-container {
        padding: 23px 12.66vw 0;

        .news-sidebar {
            display: flex;
            align-items: flex-end;
            gap: 18px;
            flex-wrap: wrap;

            .news-sidebar-item {
                color: var(--title-color);
                cursor: pointer;
                font-weight: 500;
                font-size: 28px;

                /* JS未加载时：第一个按钮默认激活 */
                &:first-of-type {
                    font-size: 42px;
                    color: #0063ff;
                }

                /* JS加载后：由 .active 控制激活状态 */
                body.js-loaded & {
                    &:first-of-type:not(.active) {
                        font-size: 28px;
                        color: var(--title-color);
                    }
                }

                &.active {
                    font-size: 42px;
                    color: #0063ff;
                }

                &:not(:first-child) {
                    &::before {
                        content: '\/';
                        font-weight: 500;
                        font-size: 28px;
                        color: #8ab0b8;
                        margin: 0 20px;
                    }
                }
            }
        }

        .content-area {
            height: 436px;
            position: relative;
            overflow: hidden;
            margin: 48px auto 0;

            .news-content-item {
                position: absolute;
                height: 100%;
                width: 100%;
                left: 0;
                top: 0;
                display: none;
                flex-wrap: wrap;

                /* JS未加载时：第一个且没有active的显示（降级方案） */
                &:first-of-type:not(.active) {
                    display: flex;
                }

                /* JS加载后：只有 .active 的才显示 */
                body.js-loaded & {
                    &:first-of-type:not(.active) {
                        display: none;
                    }
                }

                &.active {
                    display: flex;
                    animation: fadeIn 0.8s ease forwards;
                }

                .news-info {
                    display: flex;

                    .news-date {
                        text-align: center;
                        flex-shrink: 0;

                        .date-day {
                            height: 59px;
                            line-height: 59px;
                            font-weight: 600;
                            font-size: 42px;
                            color: var(--text-color);
                            display: block;
                        }

                        .date-year {
                            height: 25px;
                            line-height: 25px;
                            font-size: 18px;
                            color: #999999;
                            margin-top: -8px;
                            display: block;
                        }
                    }

                    .news-title-link {
                        margin-left: 25px;
                        flex: 1;
                        width: 0;
                        text-decoration: none;
                        &:hover {
                            text-decoration: underline;
                        }

                        .title {
                            font-weight: 600;
                            font-size: 26px;
                            color: var(--text-color);
                            height: 36px;
                            line-height: 36px;
                            margin-top: 4px;
                        }

                        .subtitle {
                            height: 27px;
                            line-height: 27px;
                            font-weight: 500;
                            font-size: 18px;
                            color: #666666;
                            margin-top: 13px;
                        }
                    }
                }

                .news-left {
                    width: 594px;
                    overflow: hidden;

                    .news-img {
                        width: 100%;
                        height: 336px;

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

                    .news-info {
                        margin-top: 20px;
                    }
                }

                .news-right {
                    margin-left: 4.22vw;
                    flex: 1;

                    .news-info {
                        padding-bottom: 45px;
                        padding-top: 52px;

                        &:first-child {
                            padding-top: 3px;
                        }

                        &:not(:last-child) {
                            .news-title-link {
                                position: relative;

                                &::after {
                                    content: '';
                                    position: absolute;
                                    bottom: -44px;
                                    width: 100%;
                                    height: 1px;
                                    background: #dddddd;
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}

/* 合作流程 */
.collaborative-wrap {
    background: #ffffff;
    padding: 73px 0 84px;

    .collaborative-container {
        --item-width: 375px;
        --item-gap: 57px;
        /* 最多三列 */
        max-width: calc((var(--item-width) * 4) + (57px * 3) + 12.71vw - 50px);
        display: grid;
        grid-template-columns: repeat(auto-fill, var(--item-width));
        padding-left: 12.71vw;
        gap: var(--item-gap);
        justify-content: space-between;
        margin: 77px auto 0;

        .collaborative-item {
            .item-img {
                width: 80px;
                height: 80px;

                .img {
                    width: 100%;
                    height: 100%;
                    display: block;
                }
            }

            .item-title {
                margin-top: 11px;
                font-size: 26px;
                color: var(--title-color);
                line-height: 36px;
                height: 36px;
            }

            .item-subtitle {
                margin-top: 11px;
                font-size: 19px;
                color: #666666;
                line-height: 30px;
            }
        }
    }
}

/* 合作企业 */
.cooperation-wrap {
    background: #ffffff;
    padding: 73px 0 84px;

    .cooperation-container {
        display: grid;
        grid-template-columns: repeat(auto-fill, 175px);
        padding: 0 12.7vw;
        gap: 60px 70px;
        margin-top: 53px;

        .cooperation-item {
            height: 53px;

            .img {
                width: 100%;
                height: 100%;
                object-fit: contain;
                display: block;
            }
        }
    }
}

/* 使命愿景 */
.vision-wrap {
    min-height: 201px;
    background: #f4f7fd;
    box-sizing: border-box;
    padding: 50px 5vw 40px;
    display: flex;
    justify-content: space-evenly;
    flex-wrap: wrap;
    gap: 15px;

    .vision-item {
        display: flex;
        .item-icon {
            width: 66px;
            height: 66px;

            .img {
                width: 100%;
                height: 100%;
                object-fit: contain;
                display: block;
            }
        }

        .item-info {
            margin-left: 16px;
            width: 210px;

            .item-title {
                font-weight: 600;
                font-size: 20px;
                color: var(--title-color);
                height: 28px;
                line-height: 28px;
            }

            .item-subtitle {
                color: #666666;
                margin-top: 8px;
                line-height: 22px;
                white-space: pre-wrap;
            }
        }
    }
}