@charset "UTF-8";
/* 各ページ用css */
/* トップページ*/
.main_visual {
    height: 100vh;
    position: relative;
    z-index: 1;
}
.main_visual .bg img {
    width: 100%;
    height: 100vh;
    object-fit: cover;
}
.main_visual_text {
    /*margin: 0 2rem;*/
    display: flex;
    flex-direction: column;
    padding: 20rem 2rem 0;
    z-index: 3;
    position: absolute;
    left: 9vw;
    bottom: 24vh;
    width: 22vw;
    min-width: 350px;
}
.main_visual_text div:nth-of-type(1) {
    margin-bottom: 1.5rem;
}
.main_visual_text div:nth-of-type(2) {
    margin-bottom: 2.5rem;
}
.main_visual_text img {
    width: 100%;
    filter: drop-shadow(1px 1px 3px rgba(255, 255, 255, 1));
}
.gradient{
    /*background-image: repeating-linear-gradient(90deg, #585f70, #5177a3 50%, #ffffff 0%);*/
    background-repeat: no-repeat;
    background-image: linear-gradient(
            to right,
            rgb(64 102 143 / 0.85) 0%,   /* ←かなり濃い */
            rgba(81, 119, 163, 0.75) 25%,
            rgba(81, 119, 163, 0.5) 50%,
            rgba(81, 119, 163, 0.2) 75%,
            rgba(81, 119, 163, 0) 100%     /* ←完全に消える */
    );
    opacity: 0.9;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
}
/* animate base */
.swiper {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}
.load_block{
    display: none;
}
.swiper .swiper-slide {
    width: 100%;
    height: 100%;
    position: absolute;
    z-index: -2;
    top: 0;
    left: 0;
    opacity: 0;
    animation: fadeAnimation 45s infinite;
}

.swiper .swiper-slide img {
    width: 100%;
    height: 100%; /* 高さを親に合わせる */
    object-fit: cover; /* 画像の比率崩れ防止 */
    margin: 0 auto;
    padding: 0;
}

/* 1枚目を-2sに設定 */
.swiper .swiper-slide:nth-child(1) { animation-delay: -2s; opacity: 1; }
.swiper .swiper-slide:nth-child(2) { animation-delay: 3s; }
.swiper .swiper-slide:nth-child(3) { animation-delay: 8s; }
.swiper .swiper-slide:nth-child(4) { animation-delay: 13s; }
.swiper .swiper-slide:nth-child(5) { animation-delay: 18s; }
.swiper .swiper-slide:nth-child(6) { animation-delay: 23s; }
.swiper .swiper-slide:nth-child(7) { animation-delay: 28s; }
.swiper .swiper-slide:nth-child(8) { animation-delay: 33s; }
.swiper .swiper-slide:nth-child(9) { animation-delay: 38s; }

@keyframes fadeAnimation {
    0% { opacity: 0; }
    5% { opacity: 1; }  /* フェードイン */
    15% { opacity: 1; } /* 表示維持 */
    20% { opacity: 0; } /* フェードアウト */
    100% { opacity: 0; }
}

.section_title h2 {
    font-size: 1.1rem;
    font-weight: 600;
    position: relative;
    padding-left: 2rem;
    letter-spacing: 2px;
}
.section_title h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.3rem;
    width: 0.9rem;
    height: 0.9rem;
    border-radius: 100%;
}
.section_title h2.section_title_eng {
    font-size: 4rem;
}
.section_title h2.section_title_eng::before {
    left: -0.5rem;
    top: 2.2rem;
}
.section_title_eng {
    font-size: 4rem;
    letter-spacing: 2px;
    font-weight: 600;
    text-indent: -5px;
}
#companyOverview {
    background-image: url(../images/company_overview_bg.jpg);
    position: relative;
    background-size: cover;
    padding: 6rem 3rem;
    color: #fff;
    z-index: 10
}
#companyOverview::before {
    content: "";
    background-color: rgba(42, 74, 121, 0.7);
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    z-index: 11;
}
#companyOverview h2::before {
    background: var(--i4-accent-color);
}
#companyOverview .show_more_btn {
    margin-top: 4rem;
    margin-left: auto;
}
.company_wrapper {
    position: relative;
    z-index: 100;
    width: 100%;
    max-width: 87rem;
    margin: 0 auto;
}
.company_text {
    width: 35rem;
    margin-left: auto;
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    font-weight: 600;
    font-size: 1.2rem;
    letter-spacing: 2px;
}
.company_text span {
    font-size: 2.2rem;
}
.company_list ul {
    list-style: none;
    margin: 0;
    padding: 0 0 0 1.2em;
}
.company_list ul li {
    text-indent: -1.25em;
}
.company_list ul li:before {
    content: "●";
    padding-right: 0.1em;
}
#business {
    padding: 6rem 3rem;
    position: relative;
    z-index: 10;
}
#business::before {
    content: "";
    position: absolute;
    background-image: url(../svg/business02.svg);
    background-size: cover;
    max-width: 1136px;
    width: 30vh;
    left: -20rem;
    z-index: -9999;
    height: 820px;
}
#business .wrapper {
    width: 100%;
    max-width: 87rem;
    margin: 0 auto;
}
.bg_img {
    position: absolute;
    z-index: -9999;
}
.bg_img img {
    width: 100%;
}
.bg_img.first {
    left: -20rem;
    top: 98px;
}
.bg_img.second {
    right: -1rem;
    bottom: 20vh;
}
.bg_img.first img {
    max-width: 1136px;
}
.bg_img.second img {
    max-width: 714px;
}
#business h2::before {
    background: var(--i4-point-color);
}
#business .section_title_eng {
    color: var(--i4-base-color);
}
.section_title_eng_reverse {
    position: absolute;
    right: 0;
    top: 2rem;
    z-index: -9999;
}
.business_wrapper {
    max-width: 86.75rem;
    width: 100%;
    margin: 7.5rem auto 0;
    display: grid;
    gap: 5rem;
    grid-template-columns: 1fr 1fr 1fr;
}
#business h3 {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-top: 2.5rem;
    position: relative;
}
#business h3::before {
    content: "";
    width: 3.75rem;
    height: 3.75rem;
    border: 1px solid var(--i4-point-color);
    border-radius: 100%;
    position: absolute;
    right: 0;
    top: -1rem;
}
#business h3::after {
    content: "";
    width: 20px;
    height: 21px;
    background-image: url(../svg/link_arrow.svg);
    background-size: cover;
    position: absolute;
    right: 1.2rem;
    top: 0.2rem;
    transition: .3s;
}
#business .business_box:hover h3::after {
    right: 0;
    transition: .3s;
}
.business_box {
    position: relative;
    transition: .8s;
}
.business_box img {
    width: 100%;
}
.business_box::before {
    content: "";
    width: 6.25rem;
    height: 5px;
    background: var(--i4-point-color);
    position: absolute;
    top: -5px;
}
.img_wrapper {
    max-width: 420px;
    overflow: hidden;
    transition: .6s;
}
.img_wrapper img {
    filter: brightness(80%);
}
.business_box:hover img {
    transform: scale(1.1);
    transition: .6s;
}
#news {
    padding: 6rem 3rem;
}
#news h2::before {
    background: var(--i4-sub-color);
}
#news .section_title_eng {
    color: var(--i4-base-color);
}
#news .wrapper {
    width: 100%;
    max-width: 87rem;
    margin: 0 auto;
}
.news_list {
    margin-top: 2rem;
    margin-left: auto;
    max-width: 70rem;
    width: 100%;
}
.news_list dl {
    display: flex;
    gap: 2rem;
    justify-content: space-between;
    padding: 2rem 1rem;
    border-top: 1px solid var(--i4-sub-color);
}
.news_list dl:last-of-type {
    border-bottom: 1px solid var(--i4-sub-color);
}
.news_list dt, dd {
    font-weight: 400;
    letter-spacing: 2px;
}
.news_list a:hover {
    opacity: .8;
    transition: .3s;
}
#contact {
    padding: 3rem 3rem;
    background: #fbc16a;
}
#contact h2::before {
    background: var(--i4-base-color);
}
#contact .section_title_eng {
    color: #fff;
}
#contact .container .row .col:last-of-type {
    display: flex;
    justify-content: end;
}
#contact .wrapper {
    width: 100%;
    max-width: 87rem;
    margin: 0 auto;
}
.contact_text {
    letter-spacing: 1px;
    line-height: 2;
    margin-top: 1rem;
}
.strong_text{
    font-weight: 600;
    color: var(--i4-base-color);
}
@media screen and (max-width: 1400px) {
    .section_title_eng_reverse img {
        width: 60vw;
        max-width: 815px;
    }
    .bg_img.second {
        display: none;
    }
    .bg_img.first {
        width: 80%;
    }
}
@media screen and (max-width: 1200px) {
    .business_wrapper {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .img_wrapper {
        max-width: 500px;
    }
    #contact .row, #contact .col {
        display: block !important;
    }
    #contact .show_more_btn {
        width: 100%
    }
    #contact .show_more_btn a {
        margin: 4rem auto 0;
        width: 30rem;
    }
}
@media screen and (max-width: 780px) {
    .main_visual_text {
        left: 0;
    }
    .swiper .swiper-slide:nth-child(1) img{
        object-position: right -735px top 0;
    }
    .swiper .swiper-slide:nth-child(2) img{
        object-position: right -185px top 0;
    }
    .swiper .swiper-slide:nth-child(3) img{
        object-position: left -260px top 0;
    }
    .swiper .swiper-slide:nth-child(4) img{
        object-position: right -240px top 0;
    }
    .swiper .swiper-slide:nth-child(5) img{
        object-position: right -230px top 0;
    }
    .swiper .swiper-slide:nth-child(6) img{
        object-position: right -113px top 0;
    }
    .swiper .swiper-slide:nth-child(7) img{
        object-position: right -75px top 0;
    }
    .swiper .swiper-slide:nth-child(8) img{
        object-position: right -298px top 0;
    }
    .swiper .swiper-slide:nth-child(9) img{
        object-position: right -414px top 0;
    }
    .section_title h2 {
        margin-bottom: 1rem;
    }
    .section_title_eng {
        font-size: 3rem;
    }
    #contact .show_more_btn a {
        width: 100%;
        padding: 1.9rem 4rem 1.9rem 1rem;
    }
    #contact .show_more_btn a::before {
        content: none;
    }
    #companyOverview {
        padding: 6rem 2rem;
    }
    #companyOverview .show_more_btn {
        margin: 4rem auto 0;
        width: 100%;
    }
    #business {
        padding: 6rem 2rem;
    }
    .company_text {
        width: 100%;
        margin: 2rem 0 0;
        font-weight: normal;
        font-size: 1.1rem;
    }
    .company_text span {
        font-size: 1.5rem;
        font-weight: 600;
    }
    .bg_img.first {
        display: none;
    }
    .section_title_eng_reverse {
        display: none;
    }
    #news {
        padding: 6rem 2rem;
    }
    /* プライバシーポリシー */
    #privacy {
        margin-top: 0;
    }
    /* プライバシーポリシー　章タイトル*/
    .chapter_title {
        font-size: 1rem;
    }
    .news_list dl {
        flex-direction: column-reverse;
    }
    footer {
        height: 10rem;
    }
    .footer_menu {
        width: 100%;
    }
    .footer_menu li {
        font-size: 1rem;
    }
    .footer_wrapper {
        display: block;
    }
    .footer_logo {
        display: flex;
    }
    .footer_logo img {
        margin-left: auto;
    }
}
@media screen and (max-width: 420px) {
    .main_visual_text{
        min-width: unset;
        width: 100%;
    }
    /*.main_visual_text .text_01,*/
    /*.main_visual_text .text_02 {*/
    /*    width: 80vw;*/
    /*}*/
    /*.main_visual_text .text_03 {*/
    /*    width: 86vw;*/
    /*}*/
}
/* 電気計装工事　設計・製作 */
.instrumentation_list {
    margin: 2rem auto 4rem;
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
}
.instrumentation_list h3 {
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--i4-base-color);
}
.instrumentation_list h4 {
    font-weight: 600;
}
.instrumentation_box {
    background: #fff;
    border-radius: 15px;
    box-shadow: 2px 2px 30px 3px #ccc;
    padding: 2rem;
    width: calc(50% - 1rem);
}
.instrumentation_box.one_col {
    width: 100%;
}
.instrumentation_box ul {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}
.instrumentation_box li {
    width: calc(50% - 1em);
}

.instrumentation_text li {
    width: 100%;
}

.instrumentation_long_box{
    background: #fff;
    border-radius: 15px;
    box-shadow: 2px 2px 30px 3px #ccc;
    padding: 2rem;
    width: 100%;
}
/* ヘッダ画像コンテナ */
.head_image_container {
    width: 100vw;
    height: 80vh;
    overflow: hidden;
    position: relative;
    clip-path: ellipse(120% 80% at 0% 20%);
}
/* ヘッダ画像 */
.head_image_container .head_img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.head_image_container .head_sub_title {
    max-width: 600px;
    position: absolute;
    bottom: 14vh;
    margin: 0 3rem;
    z-index: 999;
}
.head_image_container .head_copy {
    position: absolute;
    margin: 0;
    font-family: 'M PLUS Rounded 1c', serif;
    font-size: 1.8rem;
    background: #fdbe00;
    padding: 8px 20px;
    z-index: 999;
    line-height: 1.2;
    font-weight: 600;
}
.head_image_container .head_copy_second {
    position: absolute;
    margin: 0;
    font-family: 'M PLUS Rounded 1c', serif;
    font-size: 1.6rem;
    background: #fdbe00;
    padding: 8px 20px;
    z-index: 999;
    line-height: 1.2;
    font-weight: 600;
}
.head_image_container .text-white {
    text-shadow: 1px 2px 3px rgba(0, 0, 0, 0.3) !important;
    margin-right: 5px;
}
.head_image_container .head_read {
    position: absolute;
    margin: 0 3rem;
    max-width: 600px;
    width: 100%;
    background: rgba(255, 255, 255, 0.5);
    padding: 10px 15px;
    z-index: 999;
}
.head_image_container h1 {
    position: absolute;
    bottom: 10vh;
    margin: 0 3rem;
    color: #fff;
    font-size: 1.8rem;
    font-weight: 600;
    font-family: "Helvetica Neue", "Helvetica", "Hiragino Sans", "Arial", "Yu Gothic", "Meiryo", sans-serif;
    z-index: 999;
}
.head_image_container h1::before {
    content: "";
    width: 60px;
    height: 1px;
    background: #fff;
    position: absolute;
    bottom: -10px;
    left: 0;
}
/* 画像オーバーレイ */
.head_image_container::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.1);
    pointer-events: none;
}
.sub_title {
    display: inline-block;
    padding: 2px 5px;
    font-weight: 600;
    text-decoration: underline;
    text-decoration-thickness: 0.5em;
    text-decoration-color: rgba(255, 228, 0, 0.4);
    text-underline-offset: -0.2em;
}
.appeal {
    font-size: 1.5rem;
    text-align: center;
    margin-top: 3rem;
}
.subpage {
    background: #f7f7f7;
}
.subpage section {
    padding: 4rem 3rem;
}
.subpage .section_title_eng {
    color: var(--i4-base-color);
}
.subpage .section_title h2::before {
    background: var(--i4-point-color);
}
/* 会社概要 */
.introduction_title .char {
    font-size: 4rem;
    font-weight: bold;
    display: flex;
    line-height: 1.3;
    /*gap: 5px;*/
}
.introduction_title .char span,
.introduction_title .char span sup {
    /*background: -webkit-gradient(linear, left top, right top, from(#2a4a79), to(#bf1b2c));*/
    background: linear-gradient(90deg, #2a4a79 40%, #bf1b2c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.introduction_title h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 5px;
}
.introduction_title .word_end {
    margin-right: 1rem;
}
.introduction_title .introduction_title_wrapper {
    display: flex;
    flex-wrap: wrap;
}
.introduction_title_after {
    margin-top: 4rem;
}
.contents_end {
    margin-bottom: 4rem;
}
.introduction_text {
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 15px;
    line-height: 2rem;
    letter-spacing: 2px;
    padding: 2rem;
    width: 750px;
    max-width: 90rem;
    margin: 3rem 0 0 auto;
    position: relative;
    z-index: 100;
}
.introduction_text ul {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.introduction_text span {
    font-weight: bold;
    color: var(--i4-base-color);
}
#introduction .sub_image {
    position: absolute;
    left: 0;
    max-width: 1130px;
    margin-top: 10rem;
    z-index: 0;
}
#introduction .sub_image img {
    width: 100%;
}
#history .sub_image {
    position: absolute;
    left: 0;
    z-index: 0;
    margin-top: 5rem;
}
#history .sub_image img {
    width: 100%;
    max-width: 1000px;
}
.history_list {
    width: 100%;
    position: relative;
    z-index: 100;
    margin-top: 3rem;
}
.history_list dl {
    display: flex;
    flex-direction: column;
    margin-bottom: 1rem;
}
.history_list dt {
    font-size: 2.8rem;
    letter-spacing: 2px;
    text-align: right;
}
.history_list dd {
    margin-bottom: 0;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 2rem;
}
.history_list dd .month {
    border-bottom: 1px solid;
    margin-right: 1rem;
}
.history_list dd .txt {
    font-weight: 600;
    font-size: 1.1rem;
}
.philosophy_wrapper {
    margin: 3rem auto 0;
    width: 100%;
    position: relative;
    display: flex;
    gap: 3rem;
    align-items: flex-start;
}
.philosophy_wrapper dl {
    width: 100%;
    margin-bottom: 2rem;
    background: #fff;
    padding: 2rem;
    border-radius: 5px;
}
.philosophy_wrapper dt {
    font-size: 3rem;
    letter-spacing: 3px;
    margin-bottom: 1rem;
}
.philosophy_wrapper dd {
    margin-bottom: 0;
}
.philosophy_wrapper .img_wrap {
    position: sticky;
    top: 0;
}
.philosophy_list {
    margin: 3rem auto 0;
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
}
.philosophy_list h3 {
    font-weight: 600;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--i4-base-color);
}
.philosophy_list dl {
    background: #fff;
    padding: 2rem;
    width: calc(50% - 1rem);
    border-radius: 5px;
}
.philosophy_list dl:last-of-type {
    margin-bottom: 0;
}
.philosophy_list dt {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    line-height: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.company_list {
    margin: 3rem 0 0 auto;
    width: 100%;
}
.company_list dl {
    padding: 2rem;
    position: relative;
    display: flex;
    background: #eee;
}
.company_list dl:nth-of-type(2n) {
    background: #ddd;
}
.company_list dt {
    margin-bottom: 0.5rem;
    width: 10rem;
}
.company_list dd {
    margin-bottom: 0;
}
.company_list dd div {
    margin-bottom: 0.5rem;
    font-weight: 600;
}
.company_list dd ul {
    margin-bottom: 1.5rem;
}
.company_link {
    margin: 4rem auto 0;
    display: flex;
    justify-content: space-around;
    width: 100%;
    max-width: 40rem;
}
.link_btn a {
    color: #fff;
    font-weight: 600;
    font-size: 1.3rem;
    display: flex;
    width: 17rem;
    justify-content: center;
    padding: 1.5rem 1rem;
    background: var(--i4-point-color);
    border-radius: 5px;
    text-align: right;
    position: relative;
    transition: 0.3s;
}
.link_btn a:hover {
    opacity: 0.8;
    transition: 0.3s;
}
.about_wrapper {
    display: flex;
    position: relative;
    align-items: baseline;
    justify-content: center;
    background: #f7f7f7;

}
.about_wrapper .main_content {
    max-width: 1130px;
    width: 100%;
}
.about_wrapper .main_content.no_side {
    max-width: calc(1370px + 3rem);
    /*padding-right: calc(240px + 3rem);*/
}
.subpage section:not(:first-child) {
    padding-top: 6rem;
}
.sidebar {
    position: sticky;
    top: 120px;
    width: 240px;
    height: 100px;
    margin-right: 3rem;
    border-top: 1px solid #ccc;
}
.sidebar::before {
    content: "";
    width: 5rem;
    height: 1px;
    background: var(--i4-base-color);
    position: absolute;
    left: 0;
    top: -1px;
}
.sidebar ul {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding-left: 2rem;
}
.sidebar a {
    font-size: 1.1rem;
    position: relative;
}
.sidebar a::before {
    content: "";
    width: 0.5rem;
    height: 0.5rem;
    background: var(--i4-base-color);
    position: absolute;
    border-radius: 100%;
    left: -1.25rem;
    top: 0.6rem;
}
.sidebar a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 100%;
    height: 1px;
    background-color: var(--i4-base-color);
    transform: scale(0, 1);
    transform-origin: right top;
    transition: transform .3s;
}
.sidebar a:hover::after {
    content: "";
    transform: scale(1, 1);
    transform-origin: left top;
    transition: transform .3s;
}
/* 再生可能エネルギー*/
#renewable .appeal {
    font-size: 1.5rem;
}
#renewable .appeal.mb {
    margin-bottom: 6rem;
}
.renewable_box {
    margin: 2rem 0 4rem;
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 0 0 rgba(0, 0, 0, 0);
    transition: box-shadow 0.3s ease;
    padding: 2rem;
}
.renewable_box.is-open {
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}
/*.renewable_box ul {*/
/*    display: flex;*/
/*    justify-content: center;*/
/*    flex-wrap: wrap;*/
/*}*/
/*.renewable_box li {*/
/*    width: calc(50% - 1.2em);*/
/*}*/
.renewable_box h5 {
    font-size: 1rem;
    font-weight: bold;
    margin-bottom: 1rem;
}
.vertical_line {
    border-left: 5px solid rgba(177 44 42);
    padding-left: 25px;
}
.scope_support {
    margin: 8px 2rem;
}
.scope_support h6 {
    margin-bottom: 0.25rem;
    font-size: 1.2rem;
}
/* AIDC */
#aidc .main_image .title {
    max-width: 200px;
}
#aidc #introduction .sub_image {
    margin-top: 4rem;
}
/*#aidc #introduction .sub_image img {*/
/*    max-width: 900px;*/
/*}*/
#aidc #introduction .introduction_text {
    margin: 8rem 0 16rem auto;
}
#value .sub_image {
    position: absolute;
    left: 0;
    z-index: 0;
    margin-top: 5rem;
}
#value .sub_image img {
    width: 100%;
    max-width: 900px;
}
#value .history_list {
    margin: 6rem 0 13rem auto;
}
#value .history_list dt {
    font-size: 1.3rem;
    text-align: start;
}
.process_img {
    margin-top: 4rem;
}
.process_img img {
    width: 100%;
}
.read_text {
    font-size: 1.1rem;
    margin-top: 4rem;
    text-align: center;
}
.water_cooled_img {
    margin-top: 3rem;
    display: flex;
    justify-content: center;
}
.water_cooled_img img {
    width: 100%;
    max-width: 733px;
}
.read_list {
    margin-top: 2rem;
}
.read_list ul {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}
.read_list li {
    width: calc(33.3333% - 1rem);
    background: #fff;
    border-radius: 15px;
    box-shadow: 2px 2px 30px 3px #ccc;
    padding: 2rem;
}
.read_list_dl {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 4rem;
}
.read_list_dl dl {
    width: calc(50% - 1rem);
    background: #fff;
    border-radius: 15px;
    box-shadow: 2px 2px 30px 3px #ccc;
    padding: 2rem;
}
.read_list_dl dt {
    margin-bottom: 1rem;
}
.ai_contact_list ul {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 4rem;
}
.ai_contact_list li {
    width: calc(50% - 1rem);
    background: #fff;
    border-radius: 15px;
    box-shadow: 2px 2px 30px 3px #ccc;
    padding: 2rem;
}
.list_wrap dt {
    line-height: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.list_wrap dd {
    display: flex;
    flex-wrap: wrap;
}
@media screen and (max-width: 1750px) {
    .philosophy_text_sp {
        display: block;
        width: 100%;
    }
    .philosophy_img {
        display: none;
    }
    .philosophy_text_sp dl {
        display: flex;
        flex-direction: column;
        padding: 2rem;
        gap: 2rem;
        border-top: 2px solid #ccc;
        position: relative;
    }
    .philosophy_text_sp dl:last-of-type {
        border-bottom: 2px solid #ccc;
    }
    .philosophy_text_sp dl::before {
        content: "";
        width: 10rem;
        height: 2px;
        background: var(--i4-accent-color);
        position: absolute;
        top: -2px;
        left: 0;
    }
}
@media screen and (max-width: 1200px) {
    .sidebar {
        display: none;
    }
    .img_wrap {
        display: none;
    }
    .list_wrap {
        flex-grow: 1;
    }
    #aidc #introduction .sub_image {
        position: absolute;
        left: 0;
        max-width: 1130px;
        z-index: 0;
    }
    #value #introduction .sub_image {
        position: absolute;
        left: 0;
        max-width: 1130px;
        z-index: 0;
    }
    .philosophy_list dl {
        width: 100%;
    }
    .philosophy_text_sp dl:last-of-type::after {
        content: "";
        width: 10rem;
        height: 2px;
        background: var(--i4-accent-color);
        position: absolute;
        bottom: -2px;
        left: 0;
    }
    .philosophy_text_sp dt {
        font-size: 1.5rem;
    }
}
@media screen and (max-width: 780px) {
    #contact {
        padding: 3rem 2rem;
    }
    .head_image_container {
        clip-path: ellipse(150% 80% at 0% 20%);
    }
    .head_image_container h1 {
        margin: 0 20px;
        font-size: 1.8rem;
    }
    .head_image_container .head_sub_title {
        margin: 0 20px;
    }
    .head_image_container .head_copy,
    .head_image_container .head_copy_second {
        font-size: 1.2rem;
    }
    .head_image_container .head_read {
        font-size: 1rem;
        margin: 0 20px;
        max-width: calc(100% - 40px);
    }
    .subpage section {
        padding: 3rem 2rem;
    }
    .main_image {
        clip-path: none;
        top: -20px;
    }
    .sidebar {
        display: none;
    }
    .sub_title {
        font-size: 20px;
    }
    .instrumentation_list h4 {
        font-size: 18px;
    }
    .company_link {
        max-width: inherit;
        flex-direction: column;
        gap: 2rem;
        align-items: center;
    }
    .about_wrapper {
        display: block;
    }
    #introduction {
        margin-top: 0;
    }
    .introduction_text {
        width: 100%;
    }
    .introduction_title .char {
        font-size: 3rem;
        gap: 2px;
    }
    .introduction_title h2 {
        font-size: 1.1rem;
    }
    .introduction_text {
        padding: 1.5rem;
    }
    #renewable .appeal {
        font-size: 1.1rem;
    }
    /*.philosophy_list {*/
    /*    padding: 1.5rem;*/
    /*}*/
    .philosophy_list dl {
        display: block;
    }
    .philosophy_list dt {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    .company_list dl {
        display: block;
        padding: 1rem;
    }
    .company_list dt {
        margin-bottom: 1rem;
    }
    .main_image .title, .main_image .title.instrumentation {
        max-width: 350px;
        margin-left: 1.5rem;
    }
    .main_image h1 {
        margin-left: 1.5rem;
    }
    .appeal {
        font-size: 1.1rem;
        margin-top: 3rem;
    }
    .instrumentation_box {
        width: 100%;
    }
    .instrumentation_box li {
        width: 100%;
    }
    .ai_contact_list li {
        width: 100%;
    }
    .read_list_dl dl {
        width: 100%;
    }
    .renewable_box li {
        width: 100%;
    }
    .read_list li {
        width: 100%;
    }
    .read_list ul {
        gap: 2rem;
    }
    #contact_form .show_more_btn {
        margin: 4rem auto 0;
        width: 100%;
    }
}
@media screen and (max-width: 480px) {
    .appeal {
        text-align: left;
    }
}
/* プライバシーポリシー*/
.chapter_list {
    margin: 3rem 0 0 auto;
    position: relative;
    width: 100%;
    max-width: 85rem;
    counter-reset: policy;
}
#privacy_page {
    background: #f7f7f7;
}
/* プライバシーポリシー　章タイトル*/
.chapter_title {
    font-weight: 600;
    color: var(--i4-base-color);
}
.chapter_title:before {
    counter-increment: policy;
    content: '第' counter(policy) '章　';
}
/* プライバシーポリシー　章内容*/
.chapter_content {
    padding-left: 2rem;
    padding-bottom: 30px;
}
.chapter_content.contents_end {
    padding-bottom: 0 !important;
}
/* お問い合わせ */
#contact_form_page {
    background: #f7f7f7;
}
#contact_form .show_more_btn {
    margin-top: 4rem;
    margin-left: auto;
}
.err_item {
    color: #b12c2a;
    margin-left: 160px;
}
#send_block {
    margin-top: 3rem;
}
#complete_block {
    margin-top: 3rem;
}
.contact_form_block {
    max-width: 800px;
    width: 100%;
    margin: 3rem auto 0;
}
.input-group-text {
    width: 10rem;
}
textarea.form-control {
    height: 10rem;
}