main#main-development div.main-img-area{
    margin-top:0px;
    margin-bottom:80px;
    position:relative;
    height:clamp(100px,calc(0.44 * 100vw),460px);
}

main#main-development div.main-img-area img{
    display: block;
    max-width:950px;
    width:90%;
    margin:auto;
    position:absolute;
    right:0;
    left:0;
    margin:auto;
    top:78px;
}



main#main-development section#reason{
    padding:80px 0 120px;
}

main#main-development section#reason ol{
    counter-reset: item;
    max-width:890px;
    margin:auto;
    margin-top:115px;
}

main#main-development section#reason ol li{
    padding:80px;
    box-sizing: border-box;
    border:solid 1px #C3CFE2;
    border-radius:18px;
    position:relative;
}

main#main-development section#reason ol li:not(:last-child){
    margin-bottom: 85px;
}

main#main-development section#reason ol li h3{
    font-size:1.875rem;
    text-align: center;
}

main#main-development section#reason ol li h4 {
    font-size: 1.75rem;
    text-align: center;
}

main#main-development section#reason ol li p{

}

main#main-development section#reason ol li::before{
    counter-increment: item;
    content: "0"counter(item);
    display:flex;
    justify-content: center;
    align-items: center;
    width:110px;
    height:110px;
    aspect-ratio:1/1;
    background-color: #F7F9FC;
    border-radius:50%;
    color:#397BDF;
    font-size:3rem;
    font-weight:700;
    font-family: "Roboto", serif;
    position:absolute;
    right:0;
    left:0;
    margin:auto;
    top:-55px;
}

main#main-development section#reason ol li::after{
    content:"";
    width:1px;
    height:14px;
    background-color: #E5A93D;
    position:absolute;
    right:0;
    left:0;
    margin:auto;
    top:-40px;
    rotate:45deg;
}

@media (max-width: 640px){
    main#main-development div.main-img-area{
        margin-top:85px;
        margin-bottom:148px;
    }

    main#main-development section#reason ol li{
        padding:30px;
        padding-top:50px;
    }

    main#main-development section#reason ol li h3{
        font-size:1.75rem;
        text-align: left;
    }

    main#main-development section#reason ol li::before{
        width:80px;
        height:80px;
        font-size:1.75rem;
        top:-40px;
    }

    main#main-development section#reason ol li::after{
        height:10px;
        top:-25px;
    }
}