@media (max-width: 430px){
    /* ナビゲーション */

    header .mobile{
        font-family: 'Inria Sans', serif;
        font-weight: 800;
        display: block;
        position: absolute;
        font-size: 20px;
        top: 1rem;
        left: 1rem;
        color: #636363;
        z-index: 3001;
    }
    nav .desktop{
        display: none;
    }
/* hamburger menu */
    .humburger{
        display: flex;
        align-items: center;
        justify-content: center;
        position: fixed;
        right: 1rem;
        top: 1rem;
        z-index: 3000;
        padding: .5rem;
        border: none;
        color: #636363;
        border-radius: 5px; /* 丸ではなく四角くする場合（お好みで50%に） */
        width: 3rem;
        height: 3rem;
        cursor: pointer;
        transition: .4s;
    }
    .nav-links{
        position: fixed;
        height: 100vh;
        width: 100%;
        background: #a0a0a0;
        opacity: 0.95;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        margin: 0;
        padding: 0;
        top: 0;
        right: 0;
        transform: translateX(100%);
        transition: transform .5s ease-in-out;
        z-index: 2000;
    }
    .nav-links li{
        display: block;
        width: 100%;
        text-align: center;
        margin: 2rem 0;
    }
    .nav-active{
        transform: translateX(0);
    }
    .nav-links li a{
        font-size: 20px;
        font-weight: bold;
        margin: 0.5em;
    }
    .section-1{
        height: 20vh;
        width: 100%;

    }
    .section-1 div{
        position: absolute;
        top: 15%;
        left: 10%;
        font-family: 'Noto Sans JP', sans-serif;
        font-size: 16px;
    }
    .top{
        width: 100%;
        height: 300px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #212121;
        font-family: 'Inter', sans-serif;
        font-size: 36px;
    }
    .top-img{
        width: 180px;
        height: 180px;
    }

    .top h1{
        margin-left: 10px;
        letter-spacing: none;
        line-height: 40px;
        font-size: 20px;
        font-weight: 500;
        width: auto;
        height: 88px;
    }

    .intro{
        width: 90%;
        height: auto;
        margin: auto;
        font-weight: 400;
        font-size: 15px;
        line-height: 23px;
        letter-spacing: 0.18em;
        padding: 5%;
    }
    .how{
        margin-top: 100px;
        width: 100%;
        height: auto;
    }
    .how h1, .projects h1{
        font-size: 50px;
        line-height: 48px;
        margin-bottom: 30px;
        text-align: center;

    }
    .projects h1{
        height: 20px;
    }
    .how h5, .projects h5{
        font-size: 18px;
        margin-bottom: 50px;
    }
    .how h5{
        letter-spacing: .3em;
        margin-top: 65px;
    }
    .koumoku-wrapper{
        width: 95%;
        height: auto;
        margin: 40px auto;
        flex-direction: column;
        padding-left: 0;

    }
    .koumoku{
        height: 30%;
        width: 100%;
        display: flex;
        flex-direction: column-reverse;
    }
    .koumoku-sentence{
        width: 100%;
        height: 100%;
        display: flex;
        flex-direction: column;
        text-align: center;
        margin-bottom: 30px;
    }
    .koumoku:nth-child(2){
        flex-direction: column;
    }
    .koumoku h2{
        font-family: 'Noto Sans JP', serif;
        font-weight: 500;
        font-size: 28px;
        line-height: 44px;
        color: #4D4E4D;
        margin-bottom: 1px;
    }
    .koumoku p{
        font-family: 'Noto Sans JP', serif;
        font-size: 14px;
        line-height: 23px;
        color: #212121;
        font-weight: 400;
        letter-spacing: 0.1em;
        margin-bottom: 2px;
        text-align: left;

    }
    .koumoku-pic, .koumoku-pic2{
        width: 280px;
        height: 180px;
        margin: 0 auto;
    }


    .project-wrapper{
    width: 90%;
    height: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    }

    .each-project{
        width: 370px;
        height: 450px;
        position: relative;
    }
.big-number{
    font-size: 90px;
    font-weight: 900;
    color: #222222;
    top: -40px;
    right: -10px;
}
.project-body{
    width: 340px;
    height: 380px;
    background: #f1f1f1;
    border-radius: 7px;
    margin-top: 0;
    margin-left: 3%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

}

.project-pic{
    width: 330px;
    height: 200px;
}
.project-pic img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.project-body h2{
    font-family: 'Noto Sans JP', serif;
    font-size: 18px;
    font-weight: 600;
    text-align: center;
    width: 100%;
    height: 50px;
    margin: 10px 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.project-body button{
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    color: #212121;
    background: none;
    border-bottom: 1px solid #212121;
    border-top: none;
    border-left: none;
    border-right: none;
    padding: 0px 10px;
    cursor: pointer;
    width: 150px;
    height: 35px;
    font-weight: 500;

}

.project-body button:active{
    color:  #ffffff;
    transition: 0.3s;
}
.project-body button p{
    text-decoration: none;
    color: inherit;
    margin-left: 3px;
}
.project-body button i{
    margin-left: 9px;
}
#modal-common{
    flex-direction: column;
    justify-content: center;
}
.modal-img{
    width: 100%;
}
.modal-content{
    width: 100%;
    height: 90vh;
    padding: 20px;
    text-align: center;
}

}