html,
body {
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
}

body {
    position: relative;
    min-height: 750px;
    background: #f1efef;
    display: flex;
    flex-direction: column;
}

body,
td,
th {
    font-size: 14px;
    font-family: 'ヒラギノ角ゴシック Pro', 'Hiragino Kaku Gothic Pro', 游ゴシック体, 'Yu Gothic', YuGothic, メイリオ, Meiryo, Osaka, 'ＭＳ Ｐゴシック', 'MS PGothic', sans-serif;
}

.sp {
    display: none;
}


/* ロゴ */

#logo {
    z-index: 100;
    position: absolute;
    top: 45px;
    left: 70px;
    width: 80px;
}

#logo img {
    width: 100%;
}


/* メニュー */

nav {
    z-index: 100;
    position: fixed;
    right: 51px;
    width: 3.2em;
    height: 100%;
}

nav ul {
    height: 100%;
}

nav li {
    -ms-writing-mode: tb-rl;
    writing-mode: vertical-rl;
    height: 18%;
    text-align: center;
}

nav li:not(:first-child) {
    border-top: 1px solid #b3b3b3;
}

nav a {
    font-size: .8em;
    line-height: 1.6em;
}

nav a div.en {
    color: #999999;
    font-weight: bold;
    font-size: 1.2em;
    letter-spacing: 0.08em;
}

nav a div.ja {
    color: #666666;
    font-size: 1em;
    letter-spacing: .5em;
}

nav li.active div.en {
    color: #FFAC3D;
}


/* フッタ */

footer {
    position: fixed;
    bottom: 20px;
    right: 54px;
    color: #808080;
    font-size: 1em;
    z-index: 100;
}


/* セクション */

.section_inner {
    width: 100%;
    height: 100%;
    max-width: 1600px;
    max-height: 1080px;
    margin: auto;
    position: relative;
    margin: auto;
}

.section_content {
    position: absolute;
    width: 47%;
    height: 65%;
    top: 22%;
    left: 42%;
    padding-right: 20px;
    overflow-x: hidden;
    overflow-y: auto;
    opacity: 0;
}

.section_content.go {
    transition: opacity 1s;
    opacity: 1;
}

.section_content2 {
    position: absolute;
    width: 82.3%;
    height: 52%;
    top: 36%;
    left: 59%;
    opacity: 0;
}

.section_content2.go {
    transition: opacity 1s;
    left: 9%;
    opacity: 1;
}


/* セクションヘッダ */

.section_header {
    position: absolute;
    top: 21%;
    left: 9%;
}

.section_header h1 {
    font-family: 'Noto Serif JP', serif;
    color: #f15a24;
    font-size: 4em;
    line-height: 1;
    font-weight: bold;
}

.section_header_ja {
    border-top: 3px solid #ffac3d;
    display: inline-block;
    margin-top: .8em;
    padding-top: .9em;
}

.section_header_ja>span {
    color: #000;
    display: inline-block;
    font-size: 1em;
    letter-spacing: .4vw;
    margin-right: -1em;
    padding: 0 .5em;
}

.line {
    position: absolute;
    width: 31.3%;
    height: 53.6%;
    top: 22.8%;
    left: 9.4%;
}


/* CAROUCEL */

.caroucel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
}

.caroucel_inner {
    display: flex;
    position: relative;
}

.caroucel_unit {
    flex-shrink: 0;
}

.caroucel_nav {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    width: 9%;
    display: flex;
    justify-content: space-between;
    margin: auto;
}

.caroucel_nav>div {
    width: 33%;
}

.caroucel_nav img {
    width: 100%;
    cursor: pointer;
}

.caroucel_nav img:hover {
    filter: brightness(0) saturate(100%) invert(78%) sepia(46%) saturate(1585%) hue-rotate(328deg) brightness(103%) contrast(101%);
}

.caroucel_nav_prev>img {
    transform: scale(-1, 1);
}


/* INTRODUCTION */

#introduction_section {
    font-size: 1em;
    line-height: 2;
}

#introduction_section_bg {
    background: #fff;
    width: 100%;
    height: 100vh;
    position: absolute;
    overflow: hidden;
    z-index: 0;
}

#introduction_section_bg>div {
    position: absolute;
    top: 0;
    bottom: 0;
    margin: auto 0;
    background: #fff url(../images/introduction_bg.jpg) center/cover no-repeat;
    width: 200%;
    height: 120%;
    opacity: 0;
}

#introduction_section_bg.go>div {
    width: 100%;
    height: 100%;
    opacity: 1;
    transition: 3s;
}

#introduction_section h2 {
    font-size: 1.5em;
    color: #FFAC3D;
    font-family: 'Noto Serif JP', sans-serif;
    line-height: 1.6;
    margin-bottom: 1em;
    font-weight: bold;
    margin-top: 3em;
}

#introduction_section .text {
    margin-bottom: 3em;
}

#introduction_section img {
    max-width: 100%;
}


/* COMPANY */

#company_section {
    z-index: 10;
    position: relative;
    background: #f1efef;
}

#company_section table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 6px 0px;
}

#company_section th {
    width: 20%;
    color: #F15A24;
    border-top: 2px solid #FFAC3D;
    margin-right: 1%;
    text-align-last: justify;
    text-justify: inter-ideograph;
    padding-left: 1%;
    padding-right: 1%;
}

#company_section td {
    width: 80%;
    border-top: 2px solid #E6E6E6;
    padding-left: 3%;
    padding-right: 1%;
}

#company_section th,
#company_section td {
    padding-top: 15px;
    padding-bottom: 10px;
    line-height: 1.6;
}


/* MEMBERS */

#members_section .caroucel_unit {
    width: 50%;
    height: 500px;
    position: relative;
}

.members_image {
    width: 40%;
    margin-right: 3%;
    float: left;
}

.members_image img {
    max-width: 100%;
}

.members_data {
    padding-right: 7%;
}

.members_topline {
    position: relative;
    left: 46%;
    width: 24%;
    height: 4px;
    background-color: #ffac3d;
    margin-bottom: 15px;
    margin-bottom: 4%;
}

.members_title {
    font-size: .9em;
    font-size: .5vw;
    margin-bottom: 15px;
    margin-bottom: 4%;
    letter-spacing: .1em;
}

.members_ja {
    font-size: 1.8em;
    font-size: 1.3vw;
    margin-bottom: 15px;
    margin-bottom: 4%;
    letter-spacing: .1em;
}

.members_en {
    font-size: 3em;
    font-size: 2vw;
    font-family: 'Noto Serif JP', serif;
    color: #ffac3d;
    padding-bottom: 15px;
    padding-bottom: 4%;
}

.members_text {
    line-height: 1.6;
    font-size: .9em;
    padding-right: 7%;
    width: 54%;
    height: 45%;
    float: left;
    text-align: justify;
    text-justify: inter-ideograph;
}

.members_bottomline {
    position: relative;
    left: 46%;
    width: 50%;
    height: 1px;
    background-color: #ffac3d;
    margin-bottom: 4%;
}


/* CLIENT */

#client_section .section_content2 {}

.client_area {
    opacity: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
}

.client_pager {
    width: 80%;
    max-width: 700px;
    position: relative;
    display: flex;
    align-content: center;
}

.client_pager_page {
    width: 100%;
    position: absolute;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-content: center;
    margin: auto 0;
    height: 100%;
}

.client_pager_page:not(:first-child) {
    left: 100vw;
}

.client_pager_page img {
    display: block;
    width: 28%;
    height: auto;
}

.client_pager_page img:not(:nth-child(3n)) {
    margin-right: 8%;
}

.client_pager_page img:not(:nth-child(n+4)) {
    margin-bottom: 40px;
}

.client_nav_prev,
.client_nav_next {
    width: 4%;
    margin: auto 30px;
    display: flex;
    align-items: center;
}

.client_nav_prev img,
.client_nav_next img {
    width: 100%;
    cursor: pointer;
    display: block;
}

.client_nav_prev img:hover,
.client_nav_next img:hover {
    filter: brightness(0) saturate(100%) invert(78%) sepia(46%) saturate(1585%) hue-rotate(328deg) brightness(103%) contrast(101%);
}

.client_nav_prev>img {
    transform: scale(-1, 1);
}


/* CONTACT */

.contact_content {
    position: absolute;
    top: 45%;
    text-align: center;
    width: 100%;
    opacity: 0;
}

.contact_content div {
    width: 100%;
}

.contact_content.go {
    opacity: 1;
    transition: opacity 1s;
}

#contact_content_logo {
    width: 513px;
    margin: 0 auto 27px;
}

#contact_content_button {
    display: inline-block;
    width: 538px;
    margin: 0 auto 30px;
    background-color: #FFAC3D;
    border: none;
    color: #fff;
    line-height: 1.5em;
    padding: 2em 0 1em;
    letter-spacing: .2em;
    margin-bottom: 2em;
    cursor: pointer;
}

#contact_content_button:hover {
    background-color: #F15A24;
}

#contact_content_button em {
    font-style: normal;
    font-size: 3em;
    font-family: 'Noto Serif JP', serif;
    margin-bottom: 0;
    letter-spacing: .1em;
}

#contact_content_text {
    line-height: 2;
}

#sp_nav {
    display: none;
}

@media screen and (max-width: 1000px),
(max-height:770px) {
    #logo {
        width: 60px;
    }
    nav {
        top: 2%;
        right: 10px;
    }
    nav li {
        height: 18%;
    }
    nav a div.en {
        font-size: 1em;
        letter-spacing: 0;
    }
    nav a div.ja {
        font-size: .8em;
        letter-spacing: .3em;
    }
    .section_header h1 {
        font-size: 2.5em;
    }
    #introduction_section h2 {
        font-size: 1.2em;
    }
    #introduction_section .text {
        font-size: .9em;
        line-height: 1.5;
    }
    #company_section th,
    #company_section td {
        font-size: .9em;
        line-height: 1.5;
    }
    .members_image {
        width: 30%;
        margin-right: 3%;
    }
    .members_topline {
        margin-bottom: 7px;
        left: 36%;
    }
    .members_title {
        font-size: .8em;
        margin-bottom: 5px;
        letter-spacing: 0;
    }
    .members_ja {
        font-size: .9em;
        margin-bottom: 5px;
        letter-spacing: 0;
    }
    .members_en {
        font-size: .9em;
        padding-bottom: 7px;
    }
    .members_text {
        line-height: 1.5;
        font-size: .9em;
        width: 63%;
    }
    .members_bottomline {
        margin-bottom: 7px;
        left: 36%;
        width: 60%;
    }
}

@media screen and (max-width: 768px),
(max-height:645px) {
    body,
    td,
    th {
        font-size: 14px;
        font-family: 'ヒラギノ角ゴシック Pro', 'Hiragino Kaku Gothic Pro', sans-serif;
    }
    .sp {
        display: block;
    }
    #sp_nav {
        position: fixed;
        z-index: 100;
        right: 0;
        top: 0;
        height: 100%;
        padding: 64px 0;
        width: 30px;
        text-align: center;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }
    #sp_nav .line_bg {
        width: 1px;
        background-color: #a5a4a4;
        height: 30%;
    }
    #sp_nav .buttons {
        padding: 10px 0;
    }
    #sp_nav .buttons a {
        display: block;
        padding: 5px 0;
        color: #d4d2d2;
    }
    #sp_nav .buttons a.on {
        color: #ffac3d;
    }
    body {
        overflow-x: hidden;
    }
    nav {
        display: none;
    }
    #logo {
        z-index: 100;
        position: absolute;
        top: 20px;
        left: 20px;
        width: 50px;
    }
    #logo img {
        width: 100%;
    }
    .section_inner {
        padding: 90px 25px 40px 10px;
        max-height: 100vh;
        box-sizing: border-box;
    }
    .break .section_inner {
        height: auto !important;
        max-height: none !important;
    }
    .section_header {
        position: relative;
        top: 0;
        left: 0;
        margin-bottom: 15px;
    }
    .section_header h1 {
        font-size: 2.5em;
        margin-bottom: 15px;
    }
    .section_header_ja {
        border-top: 3px solid #ffac3d;
        display: inline-block;
        margin-top: 0;
        padding-top: .3em;
    }
    .section_header_ja>span {
        color: #000;
        display: inline-block;
        font-size: .8em;
        letter-spacing: .5em;
        margin-right: -.5em;
        padding: 0 .5em;
    }
    .line {
        display: none;
    }
    footer {
        bottom: 0;
        right: 0;
        text-align: right;
        margin: 10px;
    }
    .section_content {
        position: relative;
        width: 100%;
        height: auto;
        top: 0;
        left: 0;
        padding-right: 0;
    }
    .section_content2 {
        position: relative;
        width: 100%;
        height: auto;
        top: 0;
        left: 0;
    }
    .section_content2.go {
        transition: opacity 1s;
        left: 0;
        opacity: 1;
    }
    .nosp {
        display: none;
    }
    /* CAROUCEL */
    .caroucel {
        position: relative;
        top: 0;
        left: 0;
        width: 100%;
        height: auto !important;
    }
    .caroucel_nav {
        position: relative;
        bottom: 0;
        left: 0;
        right: 0;
        width: 20%;
        display: flex;
        justify-content: space-between;
        margin: auto;
    }
    .caroucel_nav>div {
        width: 33%;
    }
    .caroucel_nav img {
        width: 100%;
        cursor: pointer;
    }
    .caroucel_nav img:hover {
        filter: brightness(0) saturate(100%) invert(78%) sepia(46%) saturate(1585%) hue-rotate(328deg) brightness(103%) contrast(101%);
    }
    .caroucel_nav_prev>img {
        transform: scale(-1, 1);
    }
    /* INTRODUCTION */
    #introduction_section .section_header {
        margin-bottom: 0px;
    }
    #introduction_section {
        background-size: 140%;
        background: #fff url(../images/introduction_bg.jpg) center/170% no-repeat;
        background-position: 40% -10%;
        padding: 0;
    }
    #introduction_section_bg {
        display: none;
    }
    #introduction_section h2 {
        font-size: 1.2em;
        line-height: 1.6;
        margin-bottom: 1em;
        font-weight: bold;
        margin-top: 0;
    }
    #introduction_section .text {
        font-size: .8em;
        line-height: 1.5;
        margin-bottom: 20px;
    }
    .intruduction_image {
        width: 80%;
        max-width: 300px;
    }
    /* COMPANY */
    #company_section {
        font-size: 0.8em;
    }
    #company_section th {
        width: 20%;
        white-space: nowrap;
    }
    #company_section th,
    #company_section td {
        font-size: 0.8em;
        line-height: 1.5;
        padding-left: 0;
        padding-right: 0;
    }
    /* MEMBERS */
    #members_section .caroucel_unit {
        width: 100%;
        height: auto;
        position: relative;
        margin-bottom: 20px;
    }
    .members_image {
        width: 33%;
        max-width: 250px;
        margin-right: 3%;
        float: left;
    }
    .members_image img {
        max-width: 100%;
    }
    .members_data {
        padding-right: 0;
    }
    .members_topline {
        position: relative;
        left: 36%;
        width: 12%;
        height: 2px;
        margin-bottom: 4%;
        margin-top: 0;
    }
    .members_title {
        font-size: .8em;
        margin-bottom: 15px;
        margin-bottom: 4%;
        letter-spacing: .1em;
    }
    .members_ja {
        font-size: 1.8em;
        margin-bottom: 4%;
        letter-spacing: .1em;
    }
    .members_en {
        font-size: 1.4em;
        padding-bottom: 4%;
    }
    .members_text {
        padding-top: 5px;
        clear: both;
        padding-right: 10px;
        width: 100%;
        float: none;
        font-size: .8em;
        line-height: 1.8;
    }
    .members_bottomline {
        position: relative;
        left: 36%;
        width: 63%;
        height: 1px;
        background-color: #ffac3d;
        margin-bottom: 4%;
    }
    /* CLIENT */
    #client_section .section_content2 {
        display: flex;
        height: 400px;
        margin: auto 0;
        top: 180px;
        bottom: 0;
        position: absolute;
    }
    .break #client_section .section_content2 {
        display: block;
        position: relative;
        top: 40px;
    }
    .client_pager {
        overflow: hidden;
        width: 200px;
        height: 325px;
        left: 0;
        right: 0;
        position: absolute;
        margin: 0 auto;
    }
    .client_pager_page {
        width: 100%;
        height: 325px;
        position: absolute;
        display: flex;
        flex-wrap: wrap;
        align-content: flex-start;
    }
    .client_pager_page:not(:first-child) {
        left: 100%;
    }
    .client_pager_page img {
        width: 150px !important;
        height: 150px !important;
        margin: 0 auto 25px !important;
    }
    .client_pager_page img:not(:nth-child(3n)) {
        margin: 0 auto 25px !important;
    }
    .client_pager_page img:not(:nth-child(n+4)) {
        margin: 0 auto 25px !important;
    }
    .client_nav_prev,
    .client_nav_next {
        position: absolute;
        width: 8%;
        max-width: 40px;
        display: flex;
        justify-content: space-between;
        margin: auto;
        top: 340px;
        left: 0;
        right: 0;
        z-index: 100;
    }
    .client_nav_prev {
        right: 60px;
    }
    .client_nav_next {
        left: 60px;
    }
    .client_nav_prev img,
    .client_nav_next img {
        width: 100%;
        cursor: pointer;
    }
    .client_nav_prev img:hover,
    .client_nav_next img:hover {
        filter: brightness(0) saturate(100%) invert(78%) sepia(46%) saturate(1585%) hue-rotate(328deg) brightness(103%) contrast(101%);
    }
    .client_nav_prev>img {
        transform: scale(-1, 1);
    }
    /* CONTACT */
    .contact_content {
        position: relative;
        top: 0;
        text-align: center;
        width: 100%;
        height: 80%;
        display: flex;
        flex-direction: column;
        justify-content: center;
        /* 子要素をflexboxにより中央に配置する */
    }
    .contact_content div {
        width: 100%;
    }
    .break .contact_content {
        margin: 100px auto;
    }
    #contact_content_logo {
        width: 80%;
        max-width: 536px;
        margin: 0 auto 27px;
    }
    #contact_content_button {
        width: 80%;
        max-width: 536px;
        margin: 0 auto 50px
    }
    #contact_content_button:hover {
        background-color: #F15A24;
    }
    #contact_content_button em {
        font-style: normal;
        font-size: 3em;
        font-family: 'Noto Serif JP', serif;
        margin-bottom: 0;
        letter-spacing: .1em;
    }
    #contact_content_text {
        line-height: 2;
    }
}