/* スクロールアンカリングを無効化 */
body {
    overflow-anchor: none;
}

/* 記事上タイトル */
.articles-title {
    margin-bottom: 50px;
    color: #00A8A9;
    font-size: 36px;
    font-weight: 700;
    line-height: 1;
}

@media only screen and (max-width: 768px) {
    .articles-title {
        line-height: 1.25;
    }
}

/* 絞り込みエリア */

.articles-sect_filter, .p-filter {}

.p-filter_inner {
    display: flex;
    align-items: center;
    padding: 40px 0;
    width: 100%;
}

@media only screen and (max-width: 768px) {
    .p-filter_inner {
        margin: 0 -20px;
        padding: 20px 0;
        width: calc(100% + 40px);
        flex-wrap: wrap;
    }
}

.p-filter_title {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    margin-right: 20px;
    color: #00A8A9;
    font-size: 20px;
    font-weight: 700;
    line-height: 1;
}

@media only screen and (max-width: 768px) {
    .p-filter_title {
        margin: 0 0 10px;
    }
}

.p-filter_titleIcon {
    display: inline-block;
    margin-right: 10px;
    width: 24px;
    height: 24px;
}

.p-filter_titleIcon img {
    width: 100%;
    height: 100%;
}

.p-filter_list {
    display: flex;
    align-items: center;
    max-width: calc(100% - 350px);
}

@media only screen and (max-width: 768px) {
    .p-filter_list {
        margin-left: -10px;
        width: calc(100% + 10px);
        max-width: none;
        flex-wrap: wrap;
    }
}

.p-filter_list > li {
    margin-right: 16px;
    /* width: 200px; */
    width: 170px;
    height: 40px;
}

@media only screen and (max-width: 768px) {
    .p-filter_list > li {
        margin: 10px 0 0 10px;
        width: calc(50% - 10px);
    }

    .p-filter_list > li:first-child {
        width: 100%;
    }
}

.c-check {
    display: block;
    position: relative;
    overflow: hidden;
}

.c-check input[type="radio"],
.c-check input[type="checkbox"] {
    display: none;
}

.c-check_body {
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    align-items: center;
    padding-left: 16px;
    width: 100%;
    height: 100%;
    min-height: 40px;
    /* background: #00A8A9; */
    /* color: #fff; */
    background: #fff;
    color: #00A8A9;
    border: 1px solid #00A8A9;
    border-radius: 9999px;
    font-size: 20px;
    font-weight: 700;
    line-height: 1.9;
    /* text-align: center; */
    /* position: relative; */
    user-select: none;

    transition: background 0.25s ease,
                color 0.25s ease;
}

.c-check input[type="radio"]:checked ~ .c-check_body,
.c-check input[type="checkbox"]:checked ~ .c-check_body {
    background: #00A8A9;
    color: #fff;
}

.c-check_body::before {
    display: block;
    content: "";
    width: 16px;
    height: 10px;
    background: url(/corporatehistory/assets/img/ourchallenges/check_icon.svg);
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 20px;
    margin: auto;
}

.p-filter_select {
    flex-grow: 1;
}

@media only screen and (max-width: 768px) {
    .p-filter_select {
        margin-top: 20px;
    }
}

.c-select {
    margin-left: auto;
    width: 100%;
    max-width: 320px;
    position: relative;
}

@media only screen and (max-width: 768px) {
    .c-select {
        max-width: 100%;
    }
}

.c-select::after {
    display: block;
    content: "";
    width: 0;
    height: 0;
    border-style: solid;
    border-right: 8px solid transparent;
    border-left: 8px solid transparent;
    border-top: 8px solid #00A8A9;
    border-bottom: 0;
    position: absolute;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
}

.c-select_input {
    padding: 12px 48px 12px 28px;
    width: 100%;
    color: inherit;
    background: #F5F5F5;
    font-size: 16px;
    line-height: 1.5;
    border-radius: 9999px;
}

/*.c-select_input option:first-child {
    display: none;
}*/

/* カテゴリチップ（共通クラスなので、必要に応じて分割） */
.c-category {
    line-height: 1;
    color: #fff
}

.c-category span {
    font-weight: bold;
    display: inline-block;
    text-align: center;
    background-color: #999
}

.c-category.is-food span {
    background-color: #f28f00
}

.c-category.is-water span {
    background-color: #00b1b9
}

.c-category.is-environment span {
    background-color: #87c040
}

@media only screen and (min-width: 769px) {
    .c-category {
        font-size:18px
    }

    .c-category span {
        min-width: 3em;
        padding: 12px 12px
    }
}

@media only screen and (max-width: 768px) {
    .c-category {
        font-size:14px
    }
}

@media only screen and (max-width: 768px) and (max-width: 374px) {
    .c-category {
        font-size:3.74332vw
    }
}

@media only screen and (max-width: 768px) {
    .c-category span {
        min-width:3em;
        padding: 8px 10px
    }
}

/* カテゴリタブ（基本デザインは変更なし） */

.c-tab .c-tab_list {
    line-height: 1;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex
}

.c-tab .c-tab_list>li {
    font-weight: bold
}

.c-tab .c-tab_list>li>a,.c-tab .c-tab_list>li>span {
    position: relative;
    display: block;
    text-decoration: none;
    color: #111;
    border-bottom: solid #111
}

.c-tab .c-tab_list>li>a:hover {
    opacity: .75
}

.c-tab .c-tab_list>li>a:after {
    position: absolute;
    display: block;
    width: 0;
    height: 0;
    content: '';
    background-repeat: no-repeat;
    background-position: 0 0;
    background-size: 100% auto;
    right: 0;
    top: 50%;
    -webkit-transform: translateY(-50%) rotate(45deg);
    transform: translateY(-50%) rotate(45deg);
    border: solid #111
}

.c-tab .c-tab_list>li>a.is-active {
    pointer-events: none;
    color: #fff !important;
    border-color: #b2b2b2;
    background-color: #b2b2b2
}

.c-tab .c-tab_list>li>a.is-active:after {
    border-color: #fff !important
}

.c-tab .c-tab_list>li.is-gray>span {
    color: #fff;
    background-color: #777
}

.c-tab .c-tab_list>li.is-gray2>span {
    color: #fff;
    background-color: #555
}

.c-tab .c-tab_list>li.is-food a {
    color: #f28f00;
    border-color: #f28f00
}

.c-tab .c-tab_list>li.is-food a:after {
    border-color: #f28f00
}

.c-tab .c-tab_list>li.is-food a.is-active {
    background-color: #f28f00
}

.c-tab .c-tab_list>li.is-water a {
    color: #00b1b9;
    border-color: #00b1b9
}

.c-tab .c-tab_list>li.is-water a:after {
    border-color: #00b1b9
}

.c-tab .c-tab_list>li.is-water a.is-active {
    background-color: #00b1b9
}

.c-tab .c-tab_list>li.is-environment a {
    color: #87c040;
    border-color: #87c040
}

.c-tab .c-tab_list>li.is-environment a:after {
    border-color: #87c040
}

.c-tab .c-tab_list>li.is-environment a.is-active {
    background-color: #87c040
}

@media only screen and (min-width: 769px) {
    .c-tab .c-tab_list {
        margin:0 -5px
    }

    .c-tab .c-tab_list>li {
        -webkit-box-flex: 1;
        -ms-flex: 1;
        flex: 1;
        padding: 0 5px;
        font-size: 28px
    }
}

@media only screen and (min-width: 769px) and (min-width: 768px) and (max-width: 1079px) {
    .c-tab .c-tab_list>li {
        font-size:24px
    }
}

@media only screen and (min-width: 769px) {
    .c-tab .c-tab_list>li>a,.c-tab .c-tab_list>li>span {
        padding:25px 25px 25px 25px;
        border-bottom-width: 4px
    }

    .c-tab .c-tab_list>li>a {
        padding-right: 60px
    }

    .c-tab .c-tab_list>li>a:after {
        width: 8px;
        height: 8px;
        margin-right: 40px;
        border-width: 0 4px 4px 0
    }
}

@media only screen and (min-width: 769px) and (min-width: 768px) and (max-width: 1079px) {
    .c-tab .c-tab_list>li>a {
        padding-right:30px
    }

    .c-tab .c-tab_list>li>a:after {
        margin-right: 20px
    }
}

@media only screen and (max-width: 768px) {
    .c-inner .c-tab {
        margin:0 -40px
    }
}

@media only screen and (max-width: 768px) and (max-width: 374px) {
    .c-inner .c-tab {
        margin:0 -20px
    }
}

@media only screen and (max-width: 768px) {
    .c-tab .c-tab_list>li {
        -webkit-box-flex:1;
        -ms-flex: 1;
        flex: 1;
        text-align: center;
        font-size: 18px
    }
}

@media only screen and (max-width: 768px) and (max-width: 374px) {
    .c-tab .c-tab_list>li {
        font-size:4.81283vw
    }
}

@media only screen and (max-width: 768px) {
    .c-tab .c-tab_list>li>a,.c-tab .c-tab_list>li>span {
        padding:20px 10px 20px 10px;
        border-bottom-width: 4px
    }

    .c-tab .c-tab_list>li>a:after {
        display: none
    }
}

/* OurChallengesトップの記事リスト部分 */

.p-ourchallenges .articles-sect .articles-sect_list {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    justify-content: space-between;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

.p-ourchallenges .articles-sect .articles-sect_list>li {
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    width: 100%;
    position: relative; 
    box-shadow: none;

    transition: box-shadow 0.25s ease;
}

.p-ourchallenges .articles-sect .articles-sect_list>li a {
    display: block;
    text-decoration: none
}

.p-ourchallenges .articles-sect .articles-sect_list>li a:hover {
    opacity: .75
}

.p-ourchallenges .articles-sect .articles-sect_list>li:not(.is-open) {
    box-shadow: 0px 0px 20px rgba(0,0,0,0.15);
}

.p-ourchallenges .articles-sect .articles-sect_list .item-inner {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    padding: 20px 15px 20px;
    background: #FFF;
    position: relative;

    transition: background 0.25s ease;
}

.p-ourchallenges .articles-sect .articles-sect_list .item-inner > a {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.p-ourchallenges .articles-sect .articles-sect_list li .item-inner .btn {
    position: relative;
    z-index: 2;
}

.p-ourchallenges .articles-sect .articles-sect_list>li a:hover,
.p-ourchallenges .articles-sect .articles-sect_list>li .btn:hover + a {
    background: rgba(255, 255, 255, 0.25);
    opacity: 1;
}

.p-ourchallenges .articles-sect .articles-sect_list .is-open .item-inner {
    background: #F5F5F5;
}

.p-ourchallenges .articles-sect .articles-sect_list .cat-list {
    position: absolute;
    z-index: 1;
    top: 0;
    left: 0;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex
}

.p-ourchallenges .articles-sect .articles-sect_list .tag-list {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    margin: -10px 0 0 -10px;   
}

.p-ourchallenges .articles-sect .articles-sect_list .thumb img {
    width: 100%
}

.p-ourchallenges .articles-sect .articles-sect_list .copy {
    font-weight: 700;
    line-height: 1.5;
    overflow-wrap: anywhere;
}

.p-ourchallenges .articles-sect .articles-sect_list .tit {
    flex-grow: 1;
    font-weight: 500;
    line-height: 1.5;
}

.c-tag {
    display: inline-block;
    margin: 10px 0 0 10px;
    width: auto;
    background: #F5F5F5;
    color: #00A8A9;
    font-weight: 700;
    line-height: 1;
    border-radius: 9999px;

    transition: background 0.25s ease;
}

.is-open .c-tag {
    background: #fff;
}

.c-btn {
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    background: #00A8A9;
    color: #fff;
    border: 2px solid;
    border-color: #fff;
    font-weight: 700;
    line-height: 1.55;
    border-radius: 9999px;
    position: relative;
    cursor: pointer;

    transition: background 0.25s ease,
                color 0.25s ease,
                border-color 0.25s ease;
}

.c-btn::before,
.c-btn::after {
    display: block;
    content: "";
    width: 12px;
    height: 2px;
    background: #fff;

    position: absolute;
    top: 0;
    bottom: 0;
    right: 22px;
    margin: auto;

    transition: background 0.25s ease,
                transform 0.25s ease;
}

.c-btn::after {
    transform: rotate(90deg);
}

.is-open .c-btn {
    background: #fff;
    color: #00A8A9;
    border-color: #00A8A9;
}

.is-open .c-btn::before,
.is-open .c-btn::after {
    background: #00A8A9;
}

.is-open .c-btn::after {
    transform: rotate(0deg);
}

@media (any-hover: hover) {
    .c-btn:hover {
        background: #fff;
        color: #00A8A9;
        border-color: #00A8A9;
    }

    .c-btn:hover::before,
    .c-btn:hover::after {
        background: #00A8A9;
    }
}

.p-ourchallenges .articles-sect .articles-sect_list .effort-inner {
    width: 100%;
    height: auto;
    overflow: hidden;
    
    opacity: 1;
    visibility: visible;
    transition: opacity 0.5s ease,
                visibility 0.5s ease;
}

.p-ourchallenges .articles-sect .articles-sect_list :not(.is-open) .effort-inner {
    opacity: 0;
    visibility: hidden;

    transition: opacity 0.25s ease,
                visibility 0.25s ease;
}

.p-ourchallenges .articles-sect .articles-sect_list .effort-arrow {
    display: block;
    content: "";
    width: 0;
    height: 0;
    border-style: solid;
    border-right: 32px solid transparent;
    border-left: 32px solid transparent;
    border-bottom: 32px solid #F5F5F5;
    border-top: 0;
    position: absolute;
    margin: auto;
    z-index: 9;
}

.p-ourchallenges .articles-sect .articles-sect_list .effort-close {
    background: transparent;
    border: 1px solid #00A8A9;
    position: absolute;
    z-index: 11;
    cursor: pointer;
}

.p-ourchallenges .articles-sect .articles-sect_list .effort-close::before,
.p-ourchallenges .articles-sect .articles-sect_list .effort-close::after {
    display: block;
    content: "";
    width: 20px;
    height: 1px;
    background: #00A8A9;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    transform-origin: center;
}

.p-ourchallenges .articles-sect .articles-sect_list .effort-close::before {
    transform: rotate(45deg);
}

.p-ourchallenges .articles-sect .articles-sect_list .effort-close::after {
    transform: rotate(-45deg);
}

@media (any-hover: hover) {
    .p-ourchallenges .articles-sect .articles-sect_list .effort-close {
        transition: background 0.25s ease;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-close:hover {
        background: #00A8A9;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-close::before,
    .p-ourchallenges .articles-sect .articles-sect_list .effort-close::after {
        transition: background 0.25s ease;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-close:hover::before,
    .p-ourchallenges .articles-sect .articles-sect_list .effort-close:hover::after {
        background: #fff;
    }
}

.p-ourchallenges .articles-sect .articles-sect_list .effort-list {
    background: #F5F5F5;
    position: relative;
    z-index: 10;
}

.p-ourchallenges .articles-sect .articles-sect_list .effort-list > li {
    position: relative;
}

.p-ourchallenges .articles-sect .articles-sect_list .effort-list > li a:hover,
.p-ourchallenges .articles-sect .articles-sect_list>li .btn:hover + a {
    background: rgba(255, 255, 255, 0.25);
    opacity: 1;
}

@media only screen and (min-width: 769px) {
    .p-ourchallenges .articles-sect .c-tab .c-tab_list>li a {
        padding:25px 70px 25px 45px
    }
}

@media only screen and (min-width: 769px) and (min-width: 768px) and (max-width: 1079px) {
    .p-ourchallenges .articles-sect .c-tab .c-tab_list>li a {
        padding:25px 40px 25px 25px;
    }
}

@media only screen and (min-width: 769px) {
    .p-ourchallenges .articles-sect .articles-sect_main {
        margin-top: 0px;
        position: relative;
    }

    .p-ourchallenges .articles-sect .articles-sect_list {
        margin-top: -32px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list::after {
        display: block;
        content: "";
        order: 999;
    }

    .p-ourchallenges .articles-sect .articles-sect_list > li,
    .p-ourchallenges .articles-sect .articles-sect_list::after {
        margin-top: 32px; 
        /* width: 330px; */
        width: 31.73%;
    }

    .p-ourchallenges .articles-sect .articles-sect_list > li:empty {
        display: block !important;
        margin: 0;
        width: 100%;
        box-shadow: none;
        pointer-events: none;

        transition: height 0.5s ease; 
    }

    .p-ourchallenges .articles-sect .articles-sect_list .copy {
        font-size: 18px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list * + .copy {
        margin-top: 20px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .tit {
        margin: 15px 0 20px;
        font-size: 14px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .copy + .tag-list {
        margin-top: 10px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .tag-list {
        margin-bottom: 20px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .tag-list > li + li {
        margin-left: 10px;
    }

    .c-tag {
        padding: 5px 10px;
        font-size: 14px;
    }

    .c-btn {
        padding: 8px 44px 8px;
        font-size: 18px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-inner {
        /* width: 100%; */
        width: 1040px;
        max-width: calc(315.167%);
        position: absolute;
        top: 100%;
    }

    .p-ourchallenges .articles-sect .articles-sect_list :not(.is-open) .effort-inner {
        height: auto;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-inner,
    .p-ourchallenges .articles-sect .articles-sect_list .effort-inner.is-center {
        left: 50%;
        transform: translateX(-50%);
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-inner.is-left {
        left: 0;
        transform: translateX(0);
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-inner.is-right {
        left: auto;
        right: 0;
        transform: translateX(0);
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-arrow {
        top: 8px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-arrow,
    .p-ourchallenges .articles-sect .articles-sect_list .is-center .effort-arrow {
        left: 0;
        right: 0;
        transform: translateX(0%);
    }

    .p-ourchallenges .articles-sect .articles-sect_list .is-left .effort-arrow {
        /* left: calc(330px / 2);*/
        left: calc(31.73% / 2);
        right: auto;
        transform: translateX(-50%);
    }

    .p-ourchallenges .articles-sect .articles-sect_list .is-right .effort-arrow {
        left: auto;
        /* right: calc(330px / 2); */
        right: calc(31.73% / 2);
        transform: translateX(50%);
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-close {
        width: 56px;
        height: 56px;
        right: 20px;
        top: 60px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-close::before,
    .p-ourchallenges .articles-sect .articles-sect_list .effort-close::after {
        width: 20px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-list {
        display: flex;
        flex-wrap: wrap;
        margin-top: 40px;
        padding-top: 76px;
        width: 100%;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-list > li {
        width: calc(100% / 3);
    }
}

@media only screen and (max-width: 768px) {
    .p-ourchallenges .articles-sect .articles-sect_main {
        /* margin-top:40px; */
    }

    .p-ourchallenges .articles-sect .articles-sect_list {
        /* flex-direction: column; */
        margin-top: -40px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list>li {
        margin: 40px -20px 0;
        width: calc(100% + 40px);
        font-size: 14px
    }
}

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

    .p-ourchallenges .articles-sect .articles-sect_list .copy {
        font-size: 14px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list * + .copy {
        margin-top: 20px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .tit {
        margin: 10px 0;
        font-size: 16px
    }

    .p-ourchallenges .articles-sect .articles-sect_list .copy + .tag-list {
        margin-top: 10px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .tag-list {
        margin-bottom: 20px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .tag-list > li + li {
        margin-left: 10px;
    }

    .c-tag {
        padding: 5px 10px;
        font-size: 14px;
    }

    .c-btn {
        padding: 8px 44px 8px;
        font-size: 16px;
    }
}

@media only screen and (max-width: 768px) and (max-width: 374px) {
    .p-ourchallenges .articles-sect .articles-sect_list .tit {
        font-size:4.81283vw
    }
}

@media only screen and (max-width: 768px) {
    .p-ourchallenges .articles-sect .articles-sect_list .effort-arrow {
        margin-top: 20px;
        position: relative;
        top: 0;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-close {
        width: 40px;
        height: 40px;
        top: auto;
        bottom: 20px;
        right: 20px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list .effort-list {
        /* margin-top: 40px; */
        padding-bottom: 40px;
    }

    .p-ourchallenges .articles-sect .articles-sect_list :not(.is-open) .effort-inner {
        height: 0;
    }
}

/* サムネイル画像（共通クラスなので、必要に応じて分割） */
.thumb {
    position: relative;
    width: 100%
}

.thumb:before {
    content: '';
    display: block;
    padding-top: 50%
}

.thumb img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    width: 100%;
    height: 100%;
    object-fit: cover
}

.p-ourchallenges .articles-sect .articles-sect_list .item-inner .thumb {
    margin: -20px -15px 0;
    width: calc(100% + 15px * 2);
}

.p-ourchallenges .articles-sect .articles-sect_list .effort-list .item-inner .thumb {
    margin: 0;
    width: 100%;
}