.banner{
    margin: 5.4rem 0;
}
.header {
    color: #707071;
}
.title{
    font-weight: bold;
font-size: 5.4rem;
color: #202125;
line-height: 4.8rem;
margin: 4.7rem 0;
}
.titbox{
    font-weight: bold;
font-size: 3.6rem;
color: #202125;
line-height: 4.8rem; 
}
.main1{
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
    flex-wrap: wrap;
    margin: 1.9rem 0 8rem;
}
.main1 .box{
    width: 32%;
    margin-right: 2%;
    margin-top: 3rem;min-height: 53rem;
    background: #F9F9F9;
    padding: 4.2rem 2rem;
    box-sizing: border-box;
}
.main1 .box:nth-child(3n){
    margin-right: 0;
}
.main1 .box .icon{
    max-width: 3rem;
    max-height: 3rem;
    display: block;
}
.main1 .box h4{
    font-weight: 400;
    font-size: 2.2rem;
color: #202125;
line-height: 3.2rem;
height: 6.4rem;
margin: 5.4rem 0 3.8rem;
}
.main1 .box p{
    font-weight: 400;
    font-size: 1.8rem;
    color: #707071;white-space: pre-line;
    line-height: 3.6rem;
}
.main2{
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin: 3rem 0 9.6rem;
    padding-top: 4.6rem;
}
.main2.border{
    border-top: 1px solid rgba(32, 33, 37, 0.5);
}
.main2 .pic{
    display: block;
    width: 50rem;
}
.main2 .pic h3{
    font-weight: 400;
font-size: 2.6rem;
color: #202125;
line-height: 3.6rem;
margin-bottom: 6rem;
}
.main2 .txtbox{
    font-weight: 400;
    font-size: 1.8rem;
    color: #707071;
    line-height: 3.6rem;
    width: calc(100% - 60rem);white-space: pre-line;
}
.main2 .txtbox p{
    margin-bottom: 4rem;
}
.main2 .listbox{
    width: calc(100% - 60rem);
}
.main2 .listbox .li{
    padding: 2.5rem 0;
    cursor: pointer;
    border-bottom: 1px solid rgba(32, 33, 37, 0.5);
}
.main2 .listbox .li h4{
    font-weight: 400;
    font-size: 2.6rem;
    color: #707071;
    line-height: 2.6rem;
    cursor: pointer;
}
.main2 .listbox .li:hover h4,
.main2 .listbox .li.on h4{
    color: #202125;
}
.main2 .listbox .li .txt{
    font-weight: 400;
    font-size: 2.0rem;
    color: #707071;
    line-height: 3.6rem;
    margin: 4rem 0 1rem; white-space: pre-line;
    display: none;
}
.main2 .listbox .li:hover .txt,
.main2 .listbox .li.on .txt{
    display: block;
}
.main2 .listbox .li .txt p+p{
margin-top: 3rem;
} 
.main3{
    margin: 3.8rem 0 6.8rem;
}
.main3 .li{
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 3rem 0;
}
.main3 .li+.li{
    border-top: 1px solid rgba(32, 33, 37, 0.5); 
}
.main3 h4{
    font-weight: 400;
    font-size: 2.6rem;
    color: #202125;
    line-height: 3.6rem;
    width: 48%;
}
.main3 p{
    width: 48%;
    font-weight: 400;
font-size: 1.8rem;
color: #707071;white-space: pre-line;
line-height: 3.6rem;
}

.main4{
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
    flex-wrap: wrap;
    margin: 0 0 10rem;
}
.main4 .box{
    width: 31%; 
    margin-top: 4.3rem;
    margin-right: 3.5%;
    padding: 0 2rem;
    box-sizing: border-box;
}
.main4 .box:nth-child(3n){
    margin-right: 0;
}
.main4 .box .icon{
    width: 6rem;
    display: block;
}
.main4 .box h4{
    font-weight: 400;
    font-size: 2.6rem;
color: #202125;
line-height: 3.2rem;
height: 6.4rem;
margin: 2.7rem 0 3.8rem;
}
.main4 .box .txt{
    font-weight: 400;
    font-size: 1.8rem;
    color: #707071;white-space: pre-line;
    line-height: 3rem; 
}
.main4 .box .txt p+p{
    margin-top: 2rem;
}

.main5{
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin: 4.3rem 0 10rem;
}
.main5 .listbox{
    width: 48%;  
    box-sizing: border-box;
} 
.main5 .listbox:first-child{
    width: 38%;  
    margin-top: 4rem;
}
.main5 .li{
    border-bottom: 1px solid rgba(32, 33, 37, 0.5); 
    padding: 2.2rem 0;
}
.main5 .li h4{
    font-weight: 400;
    font-size: 2.6rem;
    color: #707071;
    line-height: 2.4rem;
    cursor: pointer;
}
.main5 .li:hover h4,
.main5 .li.on h4{
    color: #202125;
}
.main5 .txt{
    font-weight: 400;
    font-size: 2rem;
    color: #707071;
    line-height: 3.6rem; 
    border-top: 1px solid rgba(32, 33, 37, 0.5); 
    padding: 4.4rem 0;
    margin-top: 3.4rem;white-space: pre-line;
    display: none;
}
.main5 .txt.on{
    display: block;
}
.main5 .txt p+p{
    margin-top: 4rem;
}