.content {
    width: 100%;
}
.about-content {
    width: 100%;
}
.about-header {
    width: 100%;
    height: 502px;
    display: flex;

}
.about-header-right {
    flex:1;
    padding: 45px 0 0 45px;
    box-sizing: border-box;
    background: #099A91;
}
.one {
    color: #FFF;
    font-family: D-DIN;
    font-size: 12px;
    font-style: normal;
    font-weight: 700;
    line-height: normal;
    letter-spacing: 0.6px;
}
.two, .seven {
    color: #FFF;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 16px;
    font-style: normal;
    font-weight: 600;
    line-height: normal;
    letter-spacing: 20px;
    margin-bottom: 66px;
}
.three, .five {
    margin-top: 22px;
    color: #FFF;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 36px;
    font-style: normal;
    font-weight: 800;
    line-height: normal;
    letter-spacing: 2.88px;
}
.four, .six {
    color: #FFF;
    font-family: D-DIN;
    font-size: 24px;
    font-style: normal;
    font-weight: 700;
    line-height: normal;
}
.seven {
    margin-top: 78px;
} 
.chapters {
    width: 100%;
}
.chapters-title {
    width: 100%;
    text-align: center;
    color: #0C9F96;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 42px;
    font-style: normal;
    font-weight: 800;
    line-height: normal;
    padding-top: 70px;

}
.chapters-subtitle {
    width: 100%;
    text-align: center;
    color: #0C9F96;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 22px;
    font-style: normal;
    font-weight: 800;
    line-height: normal;
}
.chapters-paragraph {
    width: 100%;
    padding: 60px 138px 30px;
    color: #3B5B59;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 22px;
    font-style: normal;
    font-weight: 600;
    line-height: 32px; /* 145.455% */
}
.chapters-introduction {
    width: 100%;
    padding: 0 138px 100px;
    display: flex;
    justify-content: space-around;

}
.chapters-introduction-item {
    width: 297px;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.chapters-introduction-num {
    color: #0C9F96;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 42px;
    font-style: normal;
    font-weight: 800;
    line-height: normal;
}
.chapters-introduction-name {
    color: #233937;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 24px;
    font-style: normal;
    font-weight: 800;
    line-height: 32px; /* 133.333% */
    margin-bottom: 43px;
}
.chapters-introduction-content {
    width: 100%;
    text-align: center;
    color: #3B5B59;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 24px;
    font-style: normal;
    font-weight: 700;
    line-height: 32px; /* 133.333% */
}
.chapters-common-subtitle {
    width: 100%;
    text-align: center;
    color: #3B5B59;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 22px;
    font-style: normal;
    font-weight: 400;
    line-height: 32px; /* 145.455% */
}
.chapters-features {
    width: 100%;
    box-sizing: border-box;
    padding: 120px 108px 100px;
    display: flex;
    justify-content: space-around;

}
.chapters-features-item {
    width: 267.997px;
    height: 339px;
    border-radius: 27px;
    background: #FFF;
    box-shadow: 0 4px 36.2px 0 rgba(12, 90, 85, 0.14);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.chapters-features-sum {
    color: #0C9F96;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 36px;
    font-style: normal;
    font-weight: 600;
    line-height: normal;
    margin: 28px 0 6px;
}
.chapters-features-sum-en {
    color: #3B5B59;
    font-family: D-DIN;
    font-size: 24px;
    font-style: normal;
    font-weight: 700;
    line-height: normal;
}

.chapters-environment {
    width: calc(100% - 140px);
    /* margin: 20px; */
    position: relative;
    margin-top: 100px;
    margin-left: 70px;
}
.chapters-environment img {
    width: 100%;
    border-radius: 20px;
}
.chapters-environment-tip {
    display: flex;
    width: 139px;
    height: 53px;
    padding: 12px 21px;
    justify-content: center;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
    border-radius: 0 8px 0 20px;
    background: rgba(13, 31, 29, 0.67);
    color: #FFF;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 22px;
    font-style: normal;
    font-weight: 600;
    line-height: 22px; /* 100% */
    position: absolute;
    top:0;
    right:0;
}







.chapters-catalogue {
    width: 100%;
    height: 675px;
    box-sizing: border-box;
    margin: 88px 0 50px;
    position: relative;
    background: url('../images/chapter-bg.png');
    background-size: cover;
}
.chapters-catalogue-robot {
    position: absolute;
    bottom: -35px;
    left: 50%;
    transform: translateX(-50%);
}
.chapters-catalogue-item {
}
.chapters-catalogue-num {
    color: #0C9F96;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 64px;
    font-style: normal;
    font-weight: 800;
    line-height: normal;
}
.chapters-catalogue-name {
    color: #3B5B59;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 36px;
    font-style: normal;
    font-weight: 600;
    line-height: normal;
}
.num1 {
    position: absolute;
    top: 60%;
    left: 110px;
}
.num2 {
    position: absolute;
    top: 20%;
    left: 180px;
}
.num3 {
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-35%);
}
.num4 {
    position: absolute;
    top: 20%;
    right: 180px;
}
.num5 {
    position: absolute;
    top: 60%;
    right: 110px;
}

.chapters-system {
    width: 100%;
    padding: 122px 85px;
    box-sizing: border-box;
    display: flex;
    gap: 104px;
    flex-wrap: wrap;
    justify-content: space-around;
}
.chapters-system-item {
    width: 354px;
    height: 126px;
    border-radius: 0 100px 100px 100px;
    box-sizing: border-box;
    text-align: center;
    background: #0C9F96;
    color: #FFF;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 36px;
    font-style: normal;
    font-weight: 600;
    line-height: 126px; /* 88.889% */
    box-shadow: -4px -4px 10.4px 0 rgba(0, 0, 0, 0.11) inset, 5px 5px 5.4px 0 rgba(255, 255, 255, 0.38) inset;
}






.chapters-advantage {
    width: 100%;
    padding: 88px 54px 119px;
    box-sizing: border-box;
    display: flex;
    justify-content: space-around;
}
.chapters-advantage-item {
    width: 410px;
    height: 439px;
    border-radius: 20px;
    background: #F7F7F7;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.chapters-advantage-name {
    color: #3B5B59;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 36px;
    font-style: normal;
    font-weight: 600;
    line-height: normal;
    margin: 17px 0 42px;
}
.chapters-advantage-content {
    width: 290px;
    color: #3B5B59;
    text-align: center;
    font-family: "Alibaba PuHuiTi 2.0";
    font-size: 22px;
    font-style: normal;
    font-weight: 400;
    line-height: normal;
}