.section4 {
        display: block;
        padding-left: 0;
        padding-right: 0;
    }

    .Box4 {
        position: relative;
        width: 100%;
        z-index: 2;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .lt4 {
        width: 43%;
        padding-left: var(--container);
        display: flex;
        flex-direction: column;
        grid-gap: 45px;
    }

    .lt4 .indexTitle {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
    }

    .lt4 .indexTitle h1 {
        text-align: left;
    }

    .Number4 {
        display: flex;
        justify-content: space-between;
        width: 100%;
    }

    .Number4 li {
        display: flex;
        flex-direction: column;
        grid-gap: 30px;
    }

    .Number4 li h1 {
        color: #414141;
        font-size: 18px;
        line-height: 1;
    }

    .Number4 li h2 {
        color: #000;
        font-size: 20px;
        font-weight: 400;
        line-height: 1;
        grid-gap: 15px;
        display: flex;
        align-items: baseline;
    }

    .Number4 li b {
        color: var(--color);
        font-size: 52px;
        font-weight: 700;
        line-height: 1;
    }

    .desc4 {
        color: #5D5D5D;
        font-size: 16px;
        line-height: 2;
    }

    .lt4aa {
        display: flex;
        grid-gap: 30px;
    }



    .rt4 {
        width: 50%;
        border-radius: 15vw 0 0 0;
        overflow: hidden;
        position: relative;
        stroke-width: 7px;
        stroke: rgba(36, 127, 174, 0.30);
    }

    .item4 {
        position: relative;
        z-index: 1;
        width: 100%;
    }

    .item4 img {
        width: 100%;
        display: none;
    }

    .item4 img.on {
        display: block;
    }

    .list4 {
        position: absolute;
        z-index: 2;
        left: 0;
        bottom: 0;
        width: 100%;
        display: flex;
    }

    .list4 h1 {
        width: 100%;
        height: 90px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #FFF;
        text-align: center;
        font-size: 22px;
        font-weight: 700;
        background: rgba(0, 0, 0, 0.3);
    }

    .list4 h1.on {
        background: rgba(36, 127, 174, 0.81);
    }


    @media (max-width: 1440px) {
        .desc4 {
            line-height: 1.5;
        }

        .lt4 {
            grid-gap: 20px;
        }

        .Number4 li {
            grid-gap: 15px;
        }

        .Number4 li b {
            font-size: 42px;
        }
    }

    @media (max-width: 1200px) {
        .Box4 {
            flex-wrap: wrap;
            grid-gap: 30px;
            padding: 0 var(--container);
        }

        .lt4 {
            width: 100%;
            padding: 0;
        }

        .rt4 {
            width: 100%;
        }
    }

    @media (max-width: 720px) {
        .Number4 li b {
            font-size: 36px;
        }

        .list4 h1 {
            height: 60px;
            font-size: 18px;
        }
    }

    @media (max-width: 460px) {
        .list4 h1 {
            height: 45px;
            font-size: 16px;
        }
    }

    @media (max-width: 380px) {}