.banner1 {
    width: 100%;
    height: calc(200px + 20REM);
}

.banner1 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about_us_box {
    width: 100%;
    padding: calc(30px + 5rem);
}

.about_us {
    max-width: 1420px;
    width: 85%;
    margin: auto;
}

.about_us_title {
    width: calc(29px + 40rem);
    margin: auto;
    font-family: PINGFANG;
    font-weight: 400;
    font-size: calc(4px + 1.5rem);
    color: #333333;
    line-height: calc(17px + 2rem);
    text-align: center;
}

.about_us_intro {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: calc(15px + 0.5rem);
    margin-top: calc(20px + 3rem);
}

.about_us_intro p {
    font-family: PINGFANG;
    font-weight: 400;
    font-size: calc(6px + 0.5rem);
    color: #333333;
    line-height: calc(10px + 1rem);
    text-align: center;
}

.about_us_card_box {
    width: 100%;
    height: calc(133px + 20rem);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: calc(20px + 2rem);
}

.about_us_card_pic {
    width: 54.0845%;
    height: 100%;
}

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

.about_us_card_right {
    width: 42.3943%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: calc(10px + 1rem);
}

.about_us_card_right .about_us_card_right_intro {
    font-family: PINGFANG;
    font-weight: 400;
    font-size: calc(6px + 0.5rem);
    color: #777777;
    line-height: calc(10px + 1rem);
}

.about_serves_box {
    width: calc(62px + 40rem);
    height: calc(83px + 5rem);
    background: #FFFFFF;
    box-shadow: 0px 0px 8px 2px rgba(219, 219, 219, 0.6);
    position: relative;
    left: -45%;
    margin-top: calc(10px + 1.5rem);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: calc(5px + 3rem);
}
.about_serves{
    width: calc(26px + 5rem);
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: calc(1px + 0.5rem);
}
.about_serves img {
    width: calc(11px + 2rem);
}

.serves_item p:nth-of-type(1) {
    font-family: PINGFANG;
    font-weight: 500;
    font-size: calc(4px + 1rem);
    color: #333333;
}

.serves_item p:nth-of-type(2){
    font-family: PINGFANG;
    font-weight: 400;
    font-size: calc(6px + 0.5rem);
    color: #777777;
    line-height: calc(10px + 1rem);
    margin-top: calc(3px + 0.25rem);
}