.section4 {
        position: relative;
        overflow: hidden;
        padding: 0;
    }

    .Box4 {
        position: relative;
        z-index: 2;
    }

    .List4Box {
        position: relative;
        z-index: 2;
        width: 100%;
        height: 40vw;
        display: flex;
    }

    .List4 {
        width: 100%;
        padding: 0 5vw;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: flex-start;
        background: #1443d000;
    }

    .List4:hover {
        background: var(--color);
    }

    .List4 .aa4 {
        display: block;
        width: 20px;
        height: 2px;
        background: #fff;
    }

    .List4 span {
        font-size: 16px;
        color: #fff;
        font-weight: bold;
        margin: 15px 0;
    }

    .List4 h1 {
        font-size: 30px;
        line-height: 1.5;
        color: #fff;
        font-weight: bold;
    }

    .List4 h2 {
        font-size: 14px;
        line-height: 1.5;
        color: #fff;
        margin-bottom: 45px;
        word-break: break-all;
        overflow: hidden;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 1;
    }

    .Item4Box {
        position: absolute;
        z-index: 1;
        inset: 0;
        width: 100%;
        height: 100%;
    }

    .Item4Box .img4 {
        display: none;
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .Item4Box .img4.cur {
        display: block;
    }

    @media (max-width: 1200px) {
        .List4Box {
            height: 50vw;
        }

        .List4 h1 {
            font-size: 24px;
        }

        .List4 {
            padding: 0 3vw;
        }
    }

    @media (max-width:720px) {
        .List4Box {
            height: 80vh;
            display: flex;
            flex-wrap: wrap;
        }

        .List4 {
            padding: 3vw;
            width: 50%;
            height: 50%;
        }


    }

    @media (max-width: 460px) {
        .List4 span {
            margin: 5px 0;
        }

        .List4 h1 {
            font-size: 18px;
        }

        .List4 h2 {
            margin-bottom: 45px;
        }
    }