main {
    display: block;
    width: 100%;
    background: #221e1f;
    background: #131a28;
    padding-bottom: 100px;
}
    
.concept_area {
    margin: 0 auto;
    max-width: 1000px;
    color: #fff;
    justify-content: space-between;
}


/* /////////////////////// */
/* concept_area1 */
/* /////////////////////// */
.concept_area h2 {
    margin: 0;
    text-align: center;
    font-size: clamp(6rem, 5.371rem + 11.74vw, 10rem);
    line-height: 1.3;
    text-shadow: 0 0 10px #FF0;
}
.concept_area h2 span {
    display: block;
    font-size: 14px;
}
.concept_txt1 {
    font-size: 18px;
    line-height: 2.4;
    text-align: center;
    margin: 70px 0;
    font-weight: bold;
}
.concept_img1 {
    width: 500px;
    margin: 0 auto 10px;
    display: block;
}
.concept_img_hosoku {
    width: 675px;
    margin: 0 auto 150px;
    font-size: 12px;
}


/* /////////////////////// */
/* 全サイズ部分 */
/* /////////////////////// */
.sec_concept_new {
    position: relative;
}
.concept_backimg {
    width: 100%;
    height: 100%;
}
.concept_title {
    position: absolute;
    z-index: 3;
    top: 0;
    left: 30px;
    color: #fff;
    margin: 0;
    font-size: 80px;
    text-shadow: 0 0 10px #000;
}
.concept_txtblock {
    position: absolute;
    z-index: 2;
    bottom: 20px;
    left: 30px;
    width: 630px;
}
.concept_txtblock h3 {
    color: #fff;
    margin: 0;
    font-size: 36px;
    text-shadow:0 0 10px #FF0;
}
.concept_txtblock p {
    color: #fff;
    font-size: 16px;
    font-weight: bold;
    text-shadow: 0 0 10px #000;
}
.concept_txtblock img {
    width: 560px;
    background: #000;
}
.concept_txt_right {
    font-size: 10px;
    color: #fff;
    background: #221e1f;
    background: #131a28;
    padding-top: 10px;
    padding-left: 10px;
    margin: 0;
}


/* /////////////////////// */
/* concept_area2 */
/* /////////////////////// */
.concept_area2 {

}
.concept_img2 {
    width: 750px;
    display: block;
    margin: 120px auto 0;
}



/* /////////////////////// */
/* サイズの小さいPC */
/* /////////////////////// */
@media screen and (max-width:1050px){
    .concept_area {
      max-width: 750px;
      flex-wrap: wrap;
    }
    .concept_txtblock {
        width: 560px;
    }
    .concept_txtblock h3 {
        font-size: 32px;
    }
    .concept_txtblock p {
        font-size: 14px;
    }
}
@media screen and (max-width:1000px){
    .concept_txtblock_sp {
        display: none!important;
    }
}
@media screen and (max-width:900px){
    .concept_title {
        font-size: 72px;
    }
}

/* /////////////////////// */
/* レスポンシブ対応 */
/* /////////////////////// */
@media screen and (max-width:768px){
    .concept_area {
      width: calc(100% - 40px);
    }

    .concept_area h2 {
        font-size: clamp(5.5rem, -2.584rem + 13.73vw, 10rem);
    }
    .concept_area h2 span {
        font-size: 10px;
    }
    .concept_txt1 {
        font-size: 14px;
        margin: 50px 0;
    }
    .concept_img1 {
        width: calc(100% - 40px);
    }
    .concept_img_hosoku {
        width: calc(100% - 40px);
        margin: 0 auto 100px;
    }
    .concept_img2 {
        width: 100%;
        margin: 80px auto 0;
    }

    .concept_title {
        font-size: 48px;
        line-height: 1.1;
        left: 10px;
    }
    .concept_txtblock {
        display: none;
    }
    .concept_txtblock_sp {
        display: block!important;
        padding: 20px;
    }
    .concept_txtblock_sp h3 {
        margin: 0;
        color: #FF0;
        margin-bottom: 15px;
        font-size: 20px;
    }
    .concept_txtblock_sp p {
        margin: 0;
        color: #fff;
        margin-bottom: 20px;
    }
}