.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: white;
    z-index: 999999;
    transition: all 1s;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 25px;
}

.loading.hide {
    opacity: 0;
    pointer-events: none;
}

.loading img {
    opacity: 0;
    animation: loading_img_ani 2s forwards cubic-bezier(0, 0, 0.25, 1);
}

@keyframes loading_img_ani {
    0% {
        opacity: 0;
    }

    100% {
        opacity: 1;
    }
}

.loading svg {
    width: 20%;
}

.loading svg path {
    stroke-dasharray: 600px;
    animation: path_ani 2s forwards cubic-bezier(0, 0, 0.25, 1);
}

@keyframes path_ani {
    0% {
        stroke-dashoffset: 600px;
    }

    100% {
        stroke-dashoffset: 0px;
    }
}

header.transparent_bg {
    background: #ffffff6c;
    box-shadow: none;
    border: none;
}

.contents section {
    padding: 0 5%;
    margin-top: 100px;
}

.contents section h2 {
    position: relative;
    font-size: 60px;
    color: var(--color-c);
}

.contents section h2.insight_view {
    clip-path: inset(0 100% 0 0);
}

.contents section h2.insight_view.active {
    transition: all 2s;
    transition-delay: 0.2s;
    clip-path: inset(0 0 0 0);
}

.contents section h2 span {
    position: absolute;
    left: 0;
    bottom: 0;
    font-size: 30px;
    color: black;
}

.button.insight_view {
    opacity: 0;
    transform: translateY(20px);
}

.button.insight_view.active {
    transition: all 0.5s;
    transition-delay: 0.5s;
    opacity: 1;
    transform: none;
}

.contents>.top-mv {
    height: calc(100vh + 40px);
    background-color: var(--color-c);
    padding: 0px 0px;
    overflow: hidden;
    margin: 0;
}

.top-mv .slide-items,
.top-mv .slide-items .slick-track,
.top-mv .slide-items .slick-list,
.top-mv .slide-items__item {
    height: 100%;
}

.top-mv .slide-items__item {
    text-align: center;
}

.top-mv .slide-items__item>img {
    width: 100%;
    height: 100%;
    max-width: inherit;
    object-fit: cover;
}

.contents>.top-news {
    position: relative;
    background-color: var(--color-c);
    margin-bottom: 50px;
    padding-top: 30px;
    padding-bottom: 30px;
    margin-top: 0;
}

.top-news::before,
.top-news::after {
    content: "";
    position: absolute;
    left: 0;
    width: 100%;
    height: 40px;
    background-color: var(--color-c);
}

.top-news::before {
    clip-path: polygon(0 100%, 100% 0, 100% 100%);
    top: -40px;
}

.top-news::after {
    clip-path: polygon(0 100%, 100% 0, 0 0);
    bottom: -40px;
}

.top-news .news_list {
    margin: 20px 30px;
}

.insight_view.news_item {
    opacity: 0;
    transform: translateY(20px);
}

.insight_view.active.news_item {
    transition: all 0.5s;
    transition-delay: 0.5s;
    opacity: 1;
    transform: none;
}

.top-topics {
    margin-top: 150px;
    height: 1200px;
}

.topics_list {
    display: flex;
    overflow-x: auto;
    gap: 25px;
    padding: 30px;
    overflow-y: hidden;
}

.topics_item {
    max-width: 80%;
    width: 250px;
    height: 370px;
    flex-shrink: 0;
    border-radius: 5px;
    border: 1px solid var(--color-c);
    transition: box-shadow 0.3s, transform calc(var(--i) * 0.4s), opacity calc(var(--i) * 0.4s);
    transform: translateY(150px);
    opacity: 0;
    /* transition-delay: ; */
    background-color: white;
}

.topics_item.insight_view.active {
    transform: none;
    opacity: 1;
}

.topics_item a {
    color: black;
    text-decoration: none;
    width: 100%;
    height: 100%;
    display: inline-block;
}

.topics_item:hover {
    box-shadow: 0 0 10px;
    transition-delay: 0s;
}

.topics_thumbnail {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.topics_thumbnail img {
    width: 100%;
    transition: all 0.3s;
}

.topics_item:hover .topics_thumbnail img {
    transform: scale(1.3);
}

.topics_title {
    padding: 0 10px;
    font-size: 1.1em;
}

.topics_date {
    color: var(--color-a);
    padding-left: 10px;
    padding-top: 5px;
}

.linkTopics {
    font-size: 1.4em;
    width: 200px;
    height: 45px;
    background: var(--color-a);
    margin: 20px;
    transition: all 0.2s;
    position: relative;
    box-shadow: 0 0 5px;
}

.linkTopics::after {
    content: "";
    position: absolute;
    background-color: var(--color-c);
    width: 0;
    height: 100%;
    left: 0;
    top: 0;
    transition: all 0.2s;
}

.linkTopics:hover::after {
    width: 100%;
}

.linkTopics>a {
    position: absolute;
    text-align: center;
    height: 100%;
    width: 100%;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    z-index: 2;
}

.linkTopics:hover>a {
    color: black;
}

.contents>.top-life {
    height: 800px;
    padding: 0;
}

.top-life>.inner {
    box-shadow: 0 0 10px;
    width: 90%;
    height: 100%;
    border-radius: 0 20px 20px 0;
    padding: 15px;
    position: relative;
    background-color: white;
}

.top-life>.inner.insight_view {
    transform: translateX(-110%);
}

.top-life>.inner.insight_view.active {
    transition: all 0.5s ease-out;
    transform: translateX(0);
}

.contents .top-life h2.insight_view.active {
    transition-delay: 0.5s;
}

.top-science {
    height: 500px;
}

.top-event {
    display: flex;
    align-items: center;
    justify-content: center;
}

.top-event .inner {
    width: 95%;
    height: 90%;
    background-color: var(--color-c);
    position: relative;
    box-shadow: 13px 13px 0 var(--color-a);
    padding: 10px;
    padding-top: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}


.top-event .inner.insight_view {
    transform: translateY(50px);
    opacity: 0;
    transition: all 0.8s ease;
}

.top-event .inner.insight_view.active {
    transform: none;
    opacity: 1;
}

.top-event .inner h2 {
    position: absolute;
    left: 0;
    top: -50px;
    font-size: 50px;
    color: black;
}

.event-slide-wrap {
    overflow: hidden;
    position: relative;
}

.event-slide {
    width: 94%;
    margin: 0 auto;
    position: relative;
}

.event-slide .event-title {
    width: 100%;
    font-size: 1.4em;
}

.event-slide .event-text {
    width: 100%;
    font-size: 0.8em;
}

.event-slide img {
    width: 100%;
    object-fit: cover;
}


.event-slide-item>div {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    padding: 10px;
    color: white;
    background: linear-gradient(0, transparent, #454545);
}

.event-slide .slick-slide {
    overflow: hidden;
    transform: scale(0.8);
    transition: all .5s;
    opacity: 0.5;
    width: 75vw;
    max-width: 600px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.event-slide .slick-slide.slick-center {
    transform: scale(1);
    opacity: 1;
}

.slick-prev,
.slick-next {
    position: absolute;
    top: 42%;
    cursor: pointer;
    outline: none;
    border-top: 2px solid #333;
    border-right: 2px solid #333;
    height: 15px;
    width: 15px;
}

.slick-prev {
    left: -1.5%;
    transform: rotate(-135deg);
}

.slick-next {
    right: -1.5%;
    transform: rotate(45deg);
}

.slick-dots {
    text-align: center;
    margin: 20px 0 0 0;
}

.slick-dots li {
    display: inline-block;
    margin: 0 5px;
}

.slick-dots button {
    color: transparent;
    outline: none;
    width: 8px;
    /*ドットボタンのサイズ*/
    height: 8px;
    /*ドットボタンのサイズ*/
    display: block;
    border-radius: 50%;
    background: white;
    /*ドットボタンの色*/
}

.slick-dots .slick-active button {
    background: var(--color-a);
    /*ドットボタンの現在地表示の色*/
}


.top-pagelinks {
    margin: 80px 0;
    display: flex;
    align-items: center;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 10px;
}

.top-pagelinks .pagelink {
    border: 1px solid;
    border-radius: 5px;
    width: calc((100% - 30px) / 3);
    aspect-ratio: 2.8 / 1;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.top-pagelinks .pagelink a {
    display: flex;
    width: 100%;
    height: 100%;
    color: white;
    text-decoration: none;
    position: absolute;
    align-items: center;
    background: #00000069;
}

.top-pagelinks .pagelink img {
    min-width: 100%;
    min-height: 100%;
    width: 100%;
    position: absolute;
    transition: all 0.3s;
}

.top-pagelinks .pagelink:hover img {
    transform: scale(1.5);
}

.top-pagelinks .pagelink .link-title {
    font-size: 1.3em;
    margin-left: 20px;
}


@media screen and (max-width: 480px) {

    /* 480px以下に適用されるCSS（スマホ用） */
    .top-pagelinks .pagelink {
        width: 100%;
        aspect-ratio: 2.8 / 0.5;
    }
}