@charset "utf-8";

@media screen and (max-width : 768px) {

    .m_head {
        margin-bottom: 21px;
    }

    .m_head h1 {
        white-space: nowrap;
    }

    .m_head .eng {
        font-size: 14px;
    }

    .air_filter_top .img {
        margin: 20px 0 20px;
        text-align: center;
    }

    .air_filter_top .img img{
        max-width: 253px;
    }

    .air_filter_top .img_fig {
        text-align: center;
    }

    .air_filter_top .img_fig img {
        max-width: 236px;
    }

    .bg_box.replace {
        padding-bottom: 23px;
        line-height: 1.5;
    }

    .type_list {
        margin-bottom: 25px;
    }

    .type_list li {
        display: flex;
        margin-bottom: 15px;
        font-size: 14px;
        flex-wrap: wrap;
    }

    .type_list li .type {
        width: 53%;
    }

    .type_list .btm_bd {
        display: none;
    }

    .symptom_box {
        margin: 31px auto 35px;
        width: 100%;
        background-color: #f2f2f2;
        box-sizing: border-box;
        border-radius: 8px;
        line-height: 1.5;
    }

    .symptom_box_tit {
        padding: 13px 0;
        background-color: #c61a22;
        box-sizing: border-box;
        border-top-left-radius: 8px;
        border-top-right-radius: 8px;
        text-align: center;
        color: #fff;
        font-size: 14px;
        font-family: var(--font-bold);
    }

    .symptom_box_body {
        padding: 19px 30px;
        border: 1.5px solid #c51a22;
        border-bottom-left-radius: 8px;
        border-bottom-right-radius: 8px;
    }

    .symptom_list li {
        width: 100%;
        color: #c61a22;
        font-size: 16px;
        font-family: var(--font-bold);
    }

    .symptom_list li:before{
        margin-right: 5px;
        display: inline-block;
        content: "●";
        color: #666;
        font-size: 12px;
        font-family: var(--font-light);
        vertical-align: middle;
    }

    .symptom_box_body .reason {
        position: relative;
        margin: 5px 0 12px 33px;
        padding-left: 55px;
        font-size: 14px;
    }

    .symptom_box_body .reason:before {
        position: absolute;
        left: 0;
        top: 50%;
        display: inline-block;
        margin-right: 10px;
        content: "";
        width: 45px;
        height: 33px;
        background: url(../image/arrow.png) no-repeat top left;
        background-size: 45px auto;
        vertical-align: middle;
        transform: translateY(-50%);
    }

    .symptom_box_body .reason span {
        font-size: 16px;
        font-family: var(--font-bold);
    }

    #air_c_filter .box_info.full {
        margin-bottom: 26px;
    }

    #air_c_filter .filter_block {
        position: relative;
        padding: 0 0 20px 4px;
        margin-bottom: 20px;
        border-bottom: 1px solid #999;
    }

    #air_c_filter .block_p25 {
        margin-bottom: 28px;
    }

    .filter_block h5 {
        margin: 0 0 10px;
        color: #c61a22;
        font-size: 16px;
        font-family: var(--font-bold);
    }

    .filter_block .img {
        margin: 18px 0 16px;
        text-align: center;
    }

    .filter_block .img img {
        max-width: 40%;
    }

    #air_c_filter .caution {
        padding-left: 11px;
    }

    #air_c_filter .filter_difference {
        margin-top: 25px;
        padding: 17px 10px 15px;
        width: 74.5vw;
    }

    #air_c_filter .filter_difference h4 {
        font-size: 16px;
    }

    #air_c_filter .filter_difference .caution {
        padding: 0;
        font-size: 10px;
        font-family: var(--font-light);
    }
    
}

@media screen and (max-width : 480px) {
    .m_head h2 {
        font-size: 15.7px;
    }
}