html {
    overflow-y: scroll;
    -ms-overflow-style: auto;
    scrollbar-width: auto;
}

@media (max-width: 768px) {
    html,
    body {
        -ms-overflow-style: none;
        scrollbar-width: none;
    }

    html::-webkit-scrollbar,
    body::-webkit-scrollbar {
        display: none;
    }
}

body {
    margin: 0;
    font-family: sans-serif;
    background: #000;
    color: #fff;
}

.scroll-area {
    position: relative;
    height: 220vh;
    z-index: 1;
}

@media (max-width: 768px) {
    .scroll-area {
        height: 140vh;
    }
}

.sticky-container {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.bg-container {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.bg-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.line-image {
    position: absolute;
    left: 50%;
    width: 33.333vw;
    height: auto;
    opacity: 0;
    z-index: 2;
    will-change: opacity, transform;
    pointer-events: none;
}

.line-image-top {
    top: calc(50% - 18vw);
    transform: translate(-50%, -50%) translateX(-80px);
}

.line-image-bottom {
    top: calc(50% + 18vw);
    transform: translate(-50%, -50%) translateX(80px);
}

.scale-wrap {
    position: relative;
    width: 20vw;
    height: 20vw;
    z-index: 3;
    opacity: 0;
    transform: translateY(16px);
    transition:
        opacity 1.1s ease,
        transform 1.1s cubic-bezier(0.22, 1, 0.36, 1);
}

body.is-scroll-ui-show .scale-wrap {
    opacity: 1;
    transform: translateY(0);
}

.cross {
    position: relative;
    width: 100%;
    height: 100%;
}

.bar-horizontal-wrap {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.bar-horizontal {
    width: 20vw;
    height: 2px;
    background-color: #fff;
}

.scroll-text {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 20vw;
    display: flex;
    justify-content: space-between;
    font-size: 2.2vw;
    font-weight: 700;
    color: #fff;
}

.scroll-dot {
    position: absolute;
    top: 10px;
    left: 50%;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #fff;
    animation: bounce 1.2s ease-in-out infinite;
}

@keyframes bounce {
    0% { transform: translate(-50%, 0) scale(1, 1); }
    45% { transform: translate(-50%, 32px) scale(1, 1); }
    55% { transform: translate(-50%, 36px) scale(1.6, 0.45); }
    65% { transform: translate(-50%, 30px) scale(0.8, 1.25); }
    100% { transform: translate(-50%, 0) scale(1, 1); }
}

.bar-vertical {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: #fff;
    transform: translate(-50%, -50%) rotate(90deg);
}

.fade-up {
    opacity: 0;
    transform: translateY(80px);
    filter: blur(8px);
    transition:
        opacity 1.4s ease,
        transform 1.4s cubic-bezier(0.22, 1, 0.36, 1),
        filter 1.4s ease;
}

.fade-up.show {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
}

.container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 10px 0;
    box-sizing: border-box;
}

.detail-container {
    min-height: 100vh;
    padding: 120px 24px;
    margin-top: 0;
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 120px;
}

.detail-inner {
    width: 100%;
    max-width: 800px;
    text-align: center;
}

.detail-title {
    position: relative;
    margin: 0;
    margin-bottom: 20px;
    font-family: "Zen Old Mincho", serif;
    font-size: clamp(16px, 6vw, 50px);
    line-height: 1.45;
    font-weight: 900;
    letter-spacing: 0.1em;
}

.detail-title-en {
    display: block;
    font-size: clamp(20px, 1.4vw, 30px);
    letter-spacing: 0.2em;
    margin-bottom: 12px;
}

.detail-cross-wrap {
    position: relative;
    width: 40vw;
    height: 40vw;
    margin: 20px auto;
}

.detail-cross {
    position: relative;
    width: 100%;
    height: 100%;
    transform: rotate(0deg);
    will-change: transform;
}

.detail-bar-horizontal {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20vw;
    height: 2px;
    background: #fff;
    transform: translate(-50%, -50%);
    will-change: width;
}

.detail-bar-vertical {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 2px;
    background: #fff;
    transform: translate(-50%, -50%) rotate(90deg);
    will-change: width;
}

.detail-body {
    margin: 0;
    margin-top: 20px;
    font-family: "Zen Old Mincho", serif;
    font-size: clamp(14px, 3vw, 25px);
    line-height: 2.05;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-align: center;
}

.pc {
    display: inline;
}

.sp {
    display: none;
}

.detail-image {
    margin-top: 40px;
    display: flex;
    justify-content: center;
}

.detail-image img {
    width: 60vw;
    max-width: 500px;
    height: auto;
}

.detail-image-morph {
    width: 60vw;
    max-width: 500px;
    aspect-ratio: 1 / 1;
    margin: 40px auto 0;
    overflow: hidden;
    border-radius: 20px;
    will-change: border-radius, opacity, transform, filter;
}

.detail-image-morph.show {
    animation: morphRadius 1.2s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes morphRadius {
    0% {
        border-radius: 20px;
    }

    100% {
        border-radius: 50%;
    }
}

.detail-image-morph img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    will-change: transform;
}

.image img {
    width: 80%;
    max-width: 600px;
}

.detail-link-wrap {
    margin-top: 60px;
    display: flex;
    justify-content: center;
}

.detail-link {
    position: relative;
    width: fit-content;
    min-width: 8em;
    min-height: 72px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    font-family: "Zen Old Mincho", serif;
    font-size: clamp(14px, 3vw, 24px);
    font-weight: 700;
    letter-spacing: 0.12em;
    color: #fff;
    text-decoration: none;
}

.detail-link-text {
    transition:
        opacity 0.3s ease,
        transform 0.3s ease;
}

.detail-link-cross {
    position: relative;
    width: 100%;
    height: 28px;
    display: block;
    transform: rotate(0deg);
    transition: transform 0.35s ease 0.7s;
}

.detail-link-bar {
    position: absolute;
    top: 50%;
    left: 50%;
    height: 2px;
    background: #fff;
    display: block;
    transform-origin: center;
}

.detail-link-bar-horizontal {
    width: 100%;
    transform: translate(-50%, -50%) scaleX(1);
    transition: transform 0.3s ease 0.3s;
}

.detail-link-bar-vertical {
    width: 100%;
    transform: translate(-50%, -50%) rotate(90deg) scaleX(0);
    transition: transform 0.35s ease 0.55s;
}

.detail-link:hover .detail-link-text {
    opacity: 0;
    transform: translateY(-8px);
}

.detail-link:hover .detail-link-bar-horizontal {
    transform: translate(-50%, -50%) scaleX(0.72);
}

.detail-link:hover .detail-link-bar-vertical {
    transform: translate(-50%, -50%) rotate(90deg) scaleX(0.72);
}

.detail-link:hover .detail-link-cross {
    transform: rotate(45deg);
}

.other-collabo-container {
    position: relative;
    z-index: 10;
    padding: 120px 24px 160px;
    overflow: hidden;
}

.other-collabo-inner {
    width: 100%;
    max-width: 1280px;
    text-align: center;
}

.other-collabo-title {
    margin: 0 0 60px;
    font-family: "Zen Old Mincho", serif;
    font-size: clamp(22px, 5vw, 46px);
    line-height: 1.45;
    font-weight: 900;
    letter-spacing: 0.12em;
}

.other-collabo-grid {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 80px 32px;
}

.other-collabo-item {
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.other-collabo-item > a:first-child {
    display: block;
    text-decoration: none;
    color: inherit;
}

.other-collabo-item > a:first-child:hover,
.other-collabo-item > a:first-child:focus,
.other-collabo-item > a:first-child:visited {
    text-decoration: none;
    color: inherit;
}

.other-collabo-item img {
    width: 58%;
    max-width: 220px;
    height: auto;
    display: block;
    margin: 0 auto 12px;
}

.other-collabo-image-wrap {
    position: relative;
    width: 58%;
    max-width: 220px;
    margin: 0 auto 12px;
}

.other-collabo-image-wrap img {
    width: 100%;
    max-width: none;
    height: auto;
    display: block;
    margin: 0;
}

.new-badge {
    position: absolute;
    top: -12px;
    right: -28px;
    left: auto;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #d90000;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "Zen Old Mincho", serif;
    font-size: 14px;
    font-weight: 900;
    letter-spacing: 0.08em;
    line-height: 1;
    z-index: 2;
    pointer-events: none;
}

.other-collabo-item.kuppy img {
    width: 95%;
    max-width: none;
    height: auto;
    display: block;
    margin: 0 auto 12px;
}

.other-collabo-caption {
    margin: 0 0 22px;
    font-family: sans-serif;
    font-size: clamp(9px, 0.8vw, 12px);
    line-height: 1.6;
    font-weight: 400;
    letter-spacing: 0.08em;
    color: #fff;
    text-align: center;
    text-decoration: none;
}

.other-collabo-link {
    position: relative;
    width: fit-content;
    min-width: 8em;
    min-height: 50px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    font-family: "Zen Old Mincho", serif;
    font-size: clamp(13px, 1.4vw, 20px);
    font-weight: 700;
    letter-spacing: 0.12em;
    color: #fff;
    text-decoration: none;
}

.other-collabo-link-text {
    transition:
        opacity 0.3s ease,
        transform 0.3s ease;
}

.other-collabo-link-cross {
    position: relative;
    width: 100%;
    height: 28px;
    display: block;
    transform: rotate(0deg);
    transition: transform 0.3s ease;
}

.other-collabo-link-bar {
    position: absolute;
    top: 50%;
    left: 50%;
    height: 2px;
    background: #fff;
    display: block;
    transform-origin: center;
}

.other-collabo-link-bar-horizontal {
    width: 60%;
    transform: translate(-50%, -50%) scaleX(1);
    transition: transform 0.25s ease;
}

.other-collabo-link-bar-vertical {
    width: 60%;
    transform: translate(-50%, -50%) rotate(90deg) scaleX(0);
    transition: transform 0.25s ease;
}

.other-collabo-link:hover .other-collabo-link-bar-horizontal,
.other-collabo-item:hover .other-collabo-link-bar-horizontal {
    transform: translate(-50%, -50%) scaleX(0.72);
}

.other-collabo-link:hover .other-collabo-link-bar-vertical,
.other-collabo-item:hover .other-collabo-link-bar-vertical {
    transform: translate(-50%, -50%) rotate(90deg) scaleX(0.72);
}

.other-collabo-link:hover .other-collabo-link-cross,
.other-collabo-item:hover .other-collabo-link-cross {
    transform: rotate(45deg);
}

.page-top-button {
    position: fixed;
    right: 28px;
    bottom: 28px;
    width: 48px;
    height: 48px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: #fff;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(20px);
    transition:
        opacity 0.35s ease,
        visibility 0.35s ease,
        transform 0.35s ease;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.28);
}

.page-top-button.is-show {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
}

.page-top-triangle {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 14px;
    height: 14px;
    border: none;
    border-radius: 50%;
    background: #000;
    transform: translate(-50%, -50%);
}

.page-top-button.is-show .page-top-triangle {
    animation: pageTopTriangleBounce 1.25s ease-in-out infinite;
}

@keyframes pageTopTriangleBounce {
    0% {
        transform: translate(-50%, -50%) translateY(0) scale(1, 1);
    }
    25% {
        transform: translate(-50%, -50%) translateY(-9px) scale(1, 1);
    }
    45% {
        transform: translate(-50%, -50%) translateY(9px) scale(1, 1);
    }
    55% {
        transform: translate(-50%, -50%) translateY(12px) scale(1.16, 0.74);
    }
    65% {
        transform: translate(-50%, -50%) translateY(7px) scale(0.92, 1.1);
    }
    100% {
        transform: translate(-50%, -50%) translateY(0) scale(1, 1);
    }
}

@media (max-width: 768px) {
    #detailContainer {
        margin-top: -250px;
    }

    .detail-title {
        margin-bottom: -20px;
    }

    .detail-cross-wrap {
        margin: -20px auto;
    }

    .detail-body {
        margin-top: -20px;
        text-align: left;
        font-size: 18px;
    }

    .pc {
        display: none;
    }

    .sp {
        display: inline;
    }

    .detail-container {
        gap: 80px;
    }

    .other-collabo-container {
        padding: 90px 24px 120px;
    }

    .other-collabo-title {
        margin-bottom: 44px;
    }

    .other-collabo-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 64px 20px;
    }

    .other-collabo-item img {
        width: 64%;
        max-width: 180px;
        margin-bottom: 12px;
    }

    .other-collabo-image-wrap {
        width: 64%;
        max-width: 180px;
        margin-bottom: 12px;
    }

    .other-collabo-image-wrap img {
        width: 100%;
        max-width: none;
        margin: 0;
    }

    .new-badge {
        top: -14px;
        right: -32px;
        width: 100px;
        height: 100px;
        font-size: 25px;
    }

    .other-collabo-item.kuppy img {
        width: 100%;
        max-width: none;
        height: auto;
        display: block;
        margin: 0 auto 12px;
    }

    .detail-caption {
        margin-top: 12px;
        font-family: sans-serif;
        font-size: clamp(10px, 1vw, 14px);
        line-height: 1.6;
        letter-spacing: 0.08em;
        color: #fff;
        text-align: center;
    }

    .other-collabo-caption {
        margin-bottom: 20px;
        font-size: clamp(9px, 2.5vw, 12px);
    }

    .other-collabo-link {
        font-size: 24px;
    }

    .page-top-button {
        right: 18px;
        bottom: 18px;
        width: 50px;
        height: 50px;
    }

    .page-top-triangle {
        width: 13px;
        height: 13px;
        border: none;
        border-radius: 50%;
        background: #000;
    }

    .other-collabo-grid {
        grid-template-columns: 1fr;
        gap: 64px;
    }

    .other-collabo-inner.fade-up {
        opacity: 1;
        transform: none;
        filter: none;
    }

    .footer {
        display: block;
        position: relative;
        z-index: 20;
    }
}

@media (max-width: 480px) {
    .other-collabo-grid {
        grid-template-columns: 1fr;
        gap: 64px;
    }

    .other-collabo-item img {
        width: 50%;
        max-width: 220px;
    }

    .other-collabo-image-wrap {
        width: 50%;
        max-width: 220px;
    }

    .other-collabo-image-wrap img {
        width: 100%;
        max-width: none;
        margin: 0;
    }

    .new-badge {
        top: -10px;
        right: -24px;
        left: auto;
        width: 46px;
        height: 46px;
        font-size: 11px;
    }

    .other-collabo-item.kuppy img {
        width: 90%;
        max-width: none;
    }
}

@media (min-width: 769px) {
    .detail-image img {
        width: 40vw;
        max-width: 400px;
    }

    .line-image { width: 20vw; }

    .line-image-top { top: calc(50% - 9vw); }
    .line-image-bottom { top: calc(50% + 9vw); }

    .scale-wrap { width: 10vw; height: 10vw; }

    .bar-horizontal { width: 10vw; height: 3px; }
    .bar-vertical { height: 3px; }

    .scroll-text { width: 10vw; font-size: 1.54vw; }

    .scroll-dot {
        width: 10px;
        height: 10px;
        animation: bounce-pc 1.2s ease-in-out infinite;
    }

    .detail-cross-wrap {
        width: 10vw;
        height: 10vw;
        margin: 20px auto;
    }

    .detail-bar-horizontal {
        height: 3px;
    }

    .detail-bar-vertical {
        height: 3px;
    }

    #detailContainer {
        margin-top: -100px;
    }
}

@keyframes bounce-pc {
    0% { transform: translate(-50%, 0) scale(1, 1); }
    45% { transform: translate(-50%, 80px) scale(1, 1); }
    55% { transform: translate(-50%, 54px) scale(1.6, 0.45); }
    65% { transform: translate(-50%, 44px) scale(0.8, 1.25); }
    100% { transform: translate(-50%, 0) scale(1, 1); }
}

@media (hover: none) {
    .detail-link:hover .detail-link-text,
    .other-collabo-link:hover .other-collabo-link-text {
        opacity: 1;
        transform: none;
    }

    .detail-link:hover .detail-link-bar-horizontal,
    .other-collabo-link:hover .other-collabo-link-bar-horizontal,
    .other-collabo-item:hover .other-collabo-link-bar-horizontal {
        transform: translate(-50%, -50%) scaleX(1);
    }

    .detail-link:hover .detail-link-bar-vertical,
    .other-collabo-link:hover .other-collabo-link-bar-vertical,
    .other-collabo-item:hover .other-collabo-link-bar-vertical {
        transform: translate(-50%, -50%) rotate(90deg) scaleX(0);
    }

    .detail-link:hover .detail-link-cross,
    .other-collabo-link:hover .other-collabo-link-cross,
    .other-collabo-item:hover .other-collabo-link-cross {
        transform: rotate(0deg);
    }
}

.other-collabo-item {
    opacity: 0;
    transform: translateY(80px);
    filter: blur(8px);
    transition:
        opacity 1.2s ease,
        transform 1.2s cubic-bezier(0.22, 1, 0.36, 1),
        filter 1.2s ease;
}

.other-collabo-item.show {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
}

.other-collabo-item img,
.other-collabo-image-wrap img {
    transition: transform 0.3s ease;
    transform-origin: center center;
}

.other-collabo-item.is-active img,
.other-collabo-item.is-active .other-collabo-image-wrap img {
    transform: scale(1.08);
}

.footer {
    width: 100%;
    padding: 40px 24px;
    background: #000;
    color: #fff;
    box-sizing: border-box;
    border-top: 1px solid rgba(255,255,255,0.2);
}

.footer-inner {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: sans-serif;
    font-size: 13px;
    letter-spacing: 0.08em;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.footer-left a {
    color: #fff;
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.footer-left a:hover {
    opacity: 0.6;
}

.footer-right {
    text-align: right;
}

@media (max-width: 768px) {
    .footer-inner {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }

    .footer-left {
        flex-direction: column;
        gap: 10px;
    }

    .footer-left span {
        display: none;
    }

    .footer-right {
        text-align: center;
        font-size: 12px;
    }
}

@media (hover: none) {
    .other-collabo-link.is-active .other-collabo-link-bar-horizontal {
        transform: translate(-50%, -50%) scaleX(0.72);
    }

    .other-collabo-link.is-active .other-collabo-link-bar-vertical {
        transform: translate(-50%, -50%) rotate(90deg) scaleX(0.72);
    }

    .other-collabo-link.is-active .other-collabo-link-cross {
        transform: rotate(45deg);
    }
}

.loading {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    transition:
        opacity 0.45s ease,
        visibility 0.45s ease;
}

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

.loading-dots {
    display: flex;
    align-items: flex-end;
    gap: 14px;
    height: 80px;
}

.loading-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #fff;
    transform-origin: center bottom;
    animation: loadingBounce 1.05s ease-in-out infinite;
}

.loading-dot:nth-child(2) {
    animation-delay: 0.15s;
}

.loading-dot:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes loadingBounce {
    0% {
        transform: translateY(0) scale(1, 1);
    }

    20% {
        transform: translateY(-34px) scale(1, 1);
    }

    42% {
        transform: translateY(0) scale(1, 1);
    }

    50% {
        transform: translateY(0) scale(1.45, 0.45);
    }

    60% {
        transform: translateY(-8px) scale(0.85, 1.18);
    }

    75% {
        transform: translateY(0) scale(1, 1);
    }

    100% {
        transform: translateY(0) scale(1, 1);
    }
}

@media (min-width: 769px) {
    .loading-dot {
        width: 10px;
        height: 10px;
    }

    .loading-dots {
        gap: 18px;
    }
}