/* Section4 */
    .section4 {
        display: block;
    }

    .section4 .BaseTitle {
        align-items: center;
    }

    .section4 .BaseTitle * {
        text-align: center;
    }

    .Box4 {
        position: relative;
        width: 100%;
        z-index: 2;
        position: relative;
        margin-top: 60px;
    }

    .Nav4 {
        position: absolute;
        z-index: 9;
        left: 0;
        top: 0;
        display: flex;
        grid-gap: 45px;
    }

    .Nav4 h1 {
        color: #333;
        font-size: 22px;
        font-weight: 700;
        opacity: 0.4;
        transition: 0.5s;
    }

    .Nav4 h1.on {
        opacity: 1;
    }

    .item4Box {
        position: relative;
        width: 100%;
    }

    .item4Box .item4 {
        display: none;
    }

    .item4Box .item4.on {
        display: flex;
        flex-wrap: wrap;
    }

    .item4A {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
    }

    .SwiperList4 {
        width: 25%;
        height: 520px;
        margin: 0;
        padding-top: 90px;
    }

    .SwiperList4::before {
        content: "";
        position: absolute;
        z-index: 9;
        left: 0;
        top: 0;
        display: block;
        width: 100%;
        height: 90px;
        background: #fff;
    }

    .SwiperList4::after {
        content: "";
        position: absolute;
        right: 2px;
        top: 0;
        display: block;
        width: 1px;
        height: 100%;
        background: linear-gradient(90deg, var(--color) 0%, var(--color2) 100%), #000;
    }

    .SlideList4 {
        display: flex;
        align-items: center;
        color: #333;
        font-size: 18px;
        padding-right: 15px;
    }

    .SlideList4.swiper-slide-active {
        font-size: 20px;
        font-weight: bold;
    }

    .SlideList4.swiper-slide-active::after {
        content: "";
        position: absolute;
        right: 0;
        display: block;
        width: 5px;
        height: 100%;
        border-radius: 3px;
        background: var(--color);
    }

    .SwiperImg4 {
        width: calc(75% - 120px);
        margin: 0;
    }

    .SlideImg4 {
        position: relative;
        display: flex;
        justify-content: center;
        align-items: center;
        padding: 0 60px;
    }

    .SlideImg4 img {
        max-width: 500px;
        width: 100%;
    }

    .prev4,
    .next4 {
        position: absolute;
        z-index: 9;
        top: 50%;
        transform: translateY(-50%);
    }

    .prev4 {
        left: 0;
    }

    .next4 {
        right: 0;
    }

    .item4B {
        padding-top: 90px;
    }

    .item4B span {
        width: 100%;
        margin-top: 90px;
        display: flex;
        justify-content: center;
        grid-gap: 60px;
    }

    .Swiper4 {
        width: 100%;
        padding-bottom: 90px;
    }

    .Swiper4::after {
        content: "";
        display: block;
        width: 100%;
        height: 3px;
        background: var(--jianbian);
        position: absolute;
        left: 0;
        bottom: 10px;
    }

    .Slide4 {
        height: auto;
        padding: 30px;
        border-radius: 20px;
        border: 1px solid #E8EDF2;
        background: #FFF;
        display: flex;
        flex-direction: column;
        grid-gap: 15px;
    }

    .Slide4::after {
        content: "";
        display: block;
        width: 20px;
        height: 20px;
        border-radius: 30px;
        border: 3px solid #00A6F4;
        background: #B8E6FE;
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        bottom: -90px;
    }

    .Slide4:hover {
        border: 1px solid #00A6F4;
        background: linear-gradient(135deg, #F0F9FF 0%, #EFF6FF 100%), #FFF;
        box-shadow: 0 8px 32px 0 rgba(0, 166, 244, 0.20);
    }

    .Slide4 p {
        color: #99A1AF;
        font-size: 13px;
    }

    .Slide4 h1 {
        color: #333;
        font-size: 20px;
        font-weight: 700;
    }

    .Slide4 h2 {
        color: #6A7282;
        font-size: 14px;
    }

    @media (max-width: 1600px) {}

    @media (max-width: 1440px) {
        .SwiperList4 {
            width: 30%;
        }

        .SlideList4 {
            font-size: 16px;
        }

        .SlideList4.swiper-slide-active {
            font-size: 18px;
        }

        .SwiperImg4 {
            width: calc(70% - 30px);
        }
    }

    @media (max-width: 1200px) {
        .Nav4 {
            grid-gap: 15px;
        }

        .Nav4 h1 {
            font-size: 18px;
        }

        .SlideList4 {
            font-size: 14px;
        }

        .SlideList4.swiper-slide-active {
            font-size: 16px;
        }

        .SwiperList4 {
            padding-top: 60px;
        }

        .SwiperList4::before {
            height: 60px;
        }

        .item4B {
            padding-top: 60px;
        }

        .Swiper4 {
            padding-bottom: 60px;
        }

        .Slide4::after {
            bottom: -60px;
        }

        .item4B span {
            margin-top: 60px;
        }
    }

    @media (max-width: 900px) {
        .Nav4 {
            width: 100%;
            justify-content: center;
        }

        .Box4 {
            margin-top: 30px;
            padding-top: 45px;
        }

        .SwiperList4 {
            width: 100%;
            height: auto;
            padding-top: 0px;
        }

        .SwiperList4::after {
            display: none;
        }

        .SwiperList4::before {
            display: none;
        }

        .SwiperImg4 {
            width: 100%;
        }

        .SlideList4 {
            text-align: center;
            justify-content: center;
            padding-bottom: 5px;
        }

        .SlideList4.swiper-slide-active::after {
            bottom: 0;
            width: 100%;
            height: 2px;
        }

        .item4B {
            padding-top: 0;
        }
    }

    @media (max-width: 600px) {
        .SwiperList4 {
            margin-bottom: 15px;
        }

        .Slide4 {
            padding: 20px;
            grid-gap: 5px;
        }

        .Slide4 h1 {
            font-size: 18px;
        }

        .prev4,
        .next4 {
            width: 30px;
        }

        .Swiper4 {
            padding-bottom: 40px;
        }

        .Slide4::after {
            bottom: -40px;
        }

        .item4B span {
            margin-top: 15px;
            grid-gap: 30px;
        }

        .item4B span img {
            width: 30px;
        }
    }

    @media (max-width: 400px) {}