/*
*    common
*/

.baseW {
    padding-top: 100px;
    margin-top: -100px;
}

dd {
    margin-left: 0;
}

.section_title {
    text-align: center;
    font-size: 2.7rem;
    letter-spacing: .2em;
    padding-bottom: 1.5em;
    border-bottom: 1px solid #ccc;
    margin: 0 0 1.5em;
}


.inner_txt {
    width: 86%;
    margin: auto;
    line-height: 1.75;
}

/*
*    main_visual
*/
.main_visual {
    background: url("../images/bg_main.jpg") no-repeat center;
    background-size: cover;
    text-shadow: 0 0 .5em rgba(0,0,0,0.40);
    padding: 75px 0;
}
.main_visual_logo {
    width: 491px;
    margin: 0 auto 50px;
}
.page_title {
    margin: 0;
    font-size: 4.6rem;
    letter-spacing: .1em;
    text-indent: .1em;
}
.company_concept {
    margin: 0;
    font-size: 1.8rem;
    font-weight: bold;
}


/*
*    greeting
*/
.greeting {
    padding: 235px 0 145px;
}

.ceo {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    width: 86%;
    margin: 30px auto 0;
}

.ceo_txt_wrap {
    margin-right: -2em;
}

.ceo_ttl {
    position: relative;
    font-size: 2.2rem;
    z-index: 1;
}

.ceo_ttl small {
    font-size: 1.6rem;
}

.ceo_name {
    max-width: 116px;
}

/*
*    concept
*/
.concept {
    padding-bottom: 128px;
}
.eng_concept {
    text-align: center;
}

.ttl_concept {
    font-size: 3.5rem;
    font-weight: 400;
    text-align: center;
}

.concept_logo {
    margin-bottom: 102px;
    text-align: center;
}

.concept_txt {
    margin-bottom: 66px;
}

.philosophy_flex {
    display: flex;
    width: 54%;
    min-width: 594px;
    margin: auto;
}

.eng_philosophy {
    width: 10.9%;
    margin-right: 28px;
}

.philosophy_list {
    list-style: none;
    width: 83.6%;
    padding: 0;
}

.philosophy_list li {
    padding: 30px 0;
}

/*
*    summary
*/
.summary {
    padding-bottom: 128px;
}

.summary .section_title {
    border-bottom: none;
    padding-bottom: 0;
}

.summary_table {
    width: 100%;
    border-top: 1px solid #ccc;
}

.summary_table th,
.summary_table td {
    border-bottom: 1px solid #ccc;
    padding: 1em 0 1em 4em;
    text-align: left;
    vertical-align: top;
}

.summary_table th {
    width: 24.5%;
    font-weight: normal;
    background-color: #f2f2f2;
}

.summary_table td {
    width: 75.5%;
}

.summary_table td a {
    color: #333;
    text-decoration: none;
}

/*
*    partner
*/
.partner {
    padding-bottom: 70px;
}

.partner_list {
    list-style: none;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    width: 86%;
    padding: 0;
    margin: auto;
}

.partner_list li {
    width: 45%;
    margin-bottom: 62px;
    line-height: 1.8;
}
.partner_list li:last-child {
    width: 100%;
}

.partner_list li dt {
    font-weight: bold;
}

/*
*    history
*/
.history .section_title {
    position: relative;
    margin-bottom: 106px;
}

.history .section_title::after {
    content: "";
    position: absolute;
    top: -228px;
    right: -196px;
    width: 576px;
    height: 639px;
    background: url(../images/bg_history.png) no-repeat;
    background-size: contain;
    z-index: -1;
}

.history_list_wrap {
    position: relative;
    width: 93%;
    margin: 0 auto 106px;
    overflow: hidden;
}

.history_list {
    list-style: none;
    padding: 0 0 8em;
}

.history_first {
    float: left;
    background: url(../images/bg_history_list.png) no-repeat top left 5em;
    background-size: 6px 100%;
}

.history_second {
    float: right;
    margin-top: -8em;
    background: url(../images/bg_history_list_long.png) no-repeat top left 5em;
    background-size: 6px 100%;

}

.history_list li dl {
    display: flex;
    margin-bottom: 1.5em;
}

.history_list li dt {
    margin-right: 3em;
}

.history_img {
    position: absolute;
    top: 46em;
    left: 1em;
    list-style: none;
}

.history_img li {
    margin-bottom: 20px;
}

.it {
    margin-bottom: 95px;
}

.it_box {
    display: flex;
    border: 1px solid #000;
    margin-bottom: 28px;
}

.it_certification .it_cert_ttl  {
    display: block;
    width: 47.3%;
    padding: .8em 0 .8em 1em;
    margin: 0;
    font-size: 35px;
    line-height: 1.2;
    background: url(../images/bg_it.jpg) no-repeat;
    background-size: cover;
}


.it_certification .it_year {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 2.1em;
    color: #99dfdf;
}


.it_box dl  {
    font-size: 14px;
}

.it_box:not(.it_certification) dl  {
    width: 75%;
}


.it_certification dl {
    width: 52.7%;
    padding: 46px 25px;
    margin: 0;
}

.it_certification dt {
    font-weight: bold;
    color: #00a99d;
}

.it_patent dt {
    font-weight: bold;
    color: #0071bc;
}

.it_plan dt {
    font-weight: bold;
    color: #665bb0;
}

.it_box_ttl {
    display: flex;
    align-items: center;
    position: relative;
    width: 24%;
    padding-left: 106px;
    font-size: 12px;
    color: #fff;
}

.it_box_ttl::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 37px;
    width: 41px;
    height: 39px;
    margin: auto;
}

.it_patent .it_box_ttl::before {
    background: url(../images/icon_patent.png) no-repeat;
    background-size: contain;
}

.it_plan .it_box_ttl::before {
    background: url(../images/icon_plan.png) no-repeat;
    background-size: contain;
}

.it_box_ttl span {
    display: inline-block;
    width: 8em;
    padding: .1em;
    text-align: center;
}

.it_patent .it_box_ttl span {
    background-color: #0071bc;
}

.it_plan .it_box_ttl span {
    background-color: #665bb0;
}

.contact_form_wrap {
    padding-top: 70px 100px;
    margin-top: 0;
}

@media screen and (max-width: 1280px) {
    body {
        width: 100%;
    }

    main {
        max-width: 1280px;
        overflow-x: hidden;
    }

    .baseW {
        width: 100%;
        min-width: auto;
    }

    .summary_table {
        width: 86%;
        margin: auto;
    }

    .summary_table th,
    .summary_table td {
        padding: 1em 2em;
    }

    .history_second {
        margin-left: 252px;
    }

    .history_list li dt {
        min-width: 3.7em;
    }

}

@media screen and (max-width: 768px) {
    .baseW {
        width: 96%;
        padding-top: 60px;
        margin-top: -60px;
    }

    .greeting {
        padding: 120px 0 65px;
    }

    .ceo {
        width: 90%;
    }

    .ceo_txt_wrap {
        min-width: 14em;
    }

    .concept,
    .summary {
        padding-bottom: 65px;
    }

    .main_visual {
        padding: 46px 0;
    }

    .page_title {
        font-size: 3.4rem;
    }

    .section_title {
        font-size: 2.2rem;
        padding-bottom: .8em;
        margin-bottom: .8em;
    }

    .inner_txt {
        width: 90%;
        margin: auto;
    }

    .ttl_concept {
        font-size: 2.8rem;
    }

    .concept_logo {
        width: 90%;
        margin: 0 auto 72px;
    }

    .concept_txt {
        margin-bottom: 42px;
    }

    .philosophy_flex {
        width: 90%;
        min-width: auto;
    }

    .eng_philosophy {
        min-width: 64px;
    }

    .philosophy_list li {
        padding: 14px 0;
    }

    .summary_table {
        width: 96%;
    }

    .summary_table th,
    .summary_table td {
        display: block;
        width: 100%;
        padding: 1em;
    }

    .partner_list li {
        width: 100%;
        margin-bottom: 28px;
    }

    .history_second {
        margin-left: 0;
    }

    .history_img {
        display: flex;
        justify-content: space-between;
        position: static;
    }

    .history_img {
        clear: both;
        padding: 0;
    }

    .history_img li {
        width: 31%;
    }

    .history .section_title {
        margin-bottom: 34px;
    }

    .history .section_title::after {
        top: -63px;
        right: -98px;
        width: 231px;
        height: 258px;
    }

    .ceo_ttl {
        font-size: 16px;
    }

    .ceo_ttl small {
        font-size: 12px;
    }

    .ceo_name {
        max-width: 84px;
    }

    .contact_form_wrap {
        margin: 0 auto;
        padding: 30px 5%;
    }
}

@media screen and (max-width: 480px) {
    .page_title {
        font-size: 23px;
    }

    .ceo_txt_wrap {
        min-width: auto;
    }

    .ceo_img {
        min-width: 140px;
        max-width: 140px;
    }

    .history_list {
        padding: 2em .5em 2em 2em;
    }

    .history_first {
        background: url(../images/bg_history_list.png) no-repeat top left 0.5em;
        background-size: 4px 100%;
    }

    .history_second {
        margin-top: -5em;
        background: url(../images/bg_history_list.png) no-repeat top left 0.5em;
        background-size: 4px 100%;
    }

    .history_list li dl {
        display: block;
    }

    .partner_list li dt {
        margin-bottom: .2em;
        border-bottom: 1px solid #000;
    }
}