.header {
    border-bottom: 1px solid #bbb7b6;
}

.mainNav {
    width: 1200px;
    margin: 0 auto;
    font-size: #333;
    font-size: 17px;
    font-weight: 700;
    height: 150px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

.introduce {
    padding-right: 65px;
    position: relative;
}

.introduce,
.achievement {
    cursor: pointer;
}

.introduce:hover,
.achievement:hover {
    color: #72c69e;
}

.introduce::after {
    content: "";
    width: 2px;
    height: 20px;
    background-color: #bab6b5;
    position: absolute;
    top: 53%;
    right: 32px;
    transform: translateY(-50%);
}

.item {
    display: none;
    width: 100%;
}

.isActive {
    color: #72c69e;
}

.isShow {
    display: block;
}


/* 介绍 */

.itemBanner {
    height: 340px;
    text-align: center;
    padding-top: 195px;
    color: #fff;
    background-color: #72c69e;
    margin-bottom: 20px;
}

.itemBannerText1 {
    font-size: 38px;
    letter-spacing: 2px;
}

.itemBannerText2 {
    font-size: 45px;
    font-weight: 700;
    letter-spacing: 10px;
    padding-top: 5px;
}

.introduceCont {
    width: 1200px;
    margin: 0 auto;
}

.introduceMain {
    width: 1000px;
    margin-left: 200px;
    padding: 20px 0;
}

.introduceMainTitle {
    font-size: 60px;
    color: #72c69e;
    position: relative;
    margin-bottom: 120px;
}

.introduceMainTitle::after {
    content: "";
    width: 80px;
    height: 3px;
    background-color: #72c69e;
    position: absolute;
    bottom: -15px;
    left: 0;
}

.ititle {
    line-height: 1.8;
    padding-bottom: 40px;
}

.ittitle {
    font-size: 30px;
    letter-spacing: 3px;
}

.ittext {
    font-size: 16px;
    letter-spacing: 3px;
}

.ittext1 {
    font-size: 30px;
    letter-spacing: 3px;
}

.ictext1 {
    padding-bottom: 50px;
    font-size: 16px;
    letter-spacing: 2px;
    line-height: 1.7;
}

.knowTitle {
    font-size: 20px;
    color: #72c69e;
    padding: 30px 0;
}

.knowList {
    line-height: 2;
}

.knowItem {
    font-size: 16px;
    height: 33px;
    display: flex;
    align-items: center;
}

.knowItem span {
    font-size: 32px;
    margin-right: 5px;
}

.achievement {
    font-size: 16px;
    height: 33px;
    display: flex;
    align-items: center;
}

.achievement span {
    font-size: 32px;
    margin-right: 5px;
}

.achievementList {
    line-height: 2;
}

.num {
    font-size: 45px;
}

.achievementItem {
    font-size: 16px;
    height: 33px;
    display: flex;
    align-items: center;
}

.achievementItem i {
    font-size: 32px;
    margin: 0 5px;
}

.achievementItem span {
    display: flex;
    align-items: center;
}

.color {
    color: #72c69e;
}