.banner {
    width: 100%;
}

.banner_top {
    position: relative;
    height: calc(var(--design-height) * 480vh);
}

.banner_top img {
    width: 100%;
    height: 100%;
}

.banner_top h1 {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translateX(-50%) translateY(-50%);
    color: #fff;
}

.banner p {
    padding: calc(var(--design-height) * 120vh) calc(var(--design-width) * 120vw);
    text-align: center;
    font-weight: 400;
    font-size: calc(var(--design-width) * 24vw);
    color: #333333;
}

.industrialBox {
    display: flex;
    justify-content: space-between;
    width: 100%;
    /* height: calc(var(--design-height) * 632vh); */
    padding: calc(var(--design-height) * 88vh) calc(var(--design-width) * 72vw);
    background: #F9F9F9;
}

.industrial_item {
    width: calc(var(--design-width) * 636vw);
    height: calc(var(--design-width) * 456vw);
    padding: calc(var(--design-width) * 16vw);
    background: #FFF;
}

.industrial_item img {
    width: calc(var(--design-width) * 604vw);
    height: calc(var(--design-width) * 230vw);

}

.industrial_item h3 {
    margin: calc(var(--design-width) * 18vw) 0;
    font-weight: bold;
    color: #333333;
}

.industrial_item p {
    font-weight: 400;
    font-size: calc(var(--design-width) * 14vw);
    line-height: 1.8;
    color: #666666;
}

.industrial_item .line {
    width: 0;
    height: 1px;
    margin: calc(var(--design-width) * 56vw) 0 0;
    background-color: #102C5B;
}

.industrial_item:hover {
    border: 1px solid #13599C;
}

.industrial_item:hover .line {
    overflow: hidden;
    animation: expandWidth 0.5s forwards;
}

@keyframes expandWidth {
    to {
        width: calc(var(--design-width) * 200vw);
    }
}