@font-face {
    font-family: "NotoSansJP";
    src: url("../assets/fonts/notosanskr/NotoSansJP-Bold.otf");
    font-weight: 700;
}

@font-face {
    font-family: "NotoSansJP";
    src: url("../assets/fonts/notosanskr/NotoSansJP-Bold.otf");
    font-weight: 800;
}

@font-face {
    font-family: "Pretendard";
    src: url("../assets/fonts/pretendard/Pretendard-Medium.otf");
    font-weight: 500;
}

@font-face {
    font-family: "Pretendard";
    src: url("../assets/fonts/pretendard/Pretendard-Bold.otf");
    font-weight: 700;
}

@font-face {
    font-family: "Pretendard";
    src: url("../assets/fonts/pretendard/Pretendard-ExtraBold.otf");
    font-weight: 800;
}

@font-face {
    font-family: "Helvetica";
    src: url("../assets/fonts/helvetica/HelveticaNeueLTPro-Roman.otf");
    font-weight: 500;
}

@font-face {
    font-family: "Helvetica";
    src: url("../assets/fonts/helvetica/HelveticaNeueLTPro-It.otf");
    font-weight: 500;
    font-style: italic;
}

@font-face {
    font-family: "Helvetica";
    src: url("../assets/fonts/helvetica/HelveticaNeueLTPro-Md.otf");
    font-weight: 700;
}

@font-face {
    font-family: "Helvetica";
    src: url("../assets/fonts/helvetica/HelveticaNeueLTPro-MdIt.otf");
    font-weight: 700;
    font-style: italic;
}

@font-face {
    font-family: "Helvetica";
    src: url("../assets/fonts/helvetica/HelveticaNeueLTPro-Bd.otf");
    font-weight: 800;
}

@font-face {
    font-family: "Helvetica";
    src: url("../assets/fonts/helvetica/HelveticaNeueLTPro-BdIt.otf");
    font-weight: 800;
    font-style: italic;
}

:root {
    --std: 16px;
    --max-width: calc(840px - (var(--std) * 1.5) * 4.0 - ((var(--std) * 1.5) * 2.0) * 2.0);
}

* {
    margin: 0;
    padding: 0;
    -webkit-box-sizing: border-box;
            box-sizing: border-box;
    font-family: inherit;
    font-size: inherit;
    font-weight: inherit;
    line-height: inherit;
    list-style-type: none;
    word-break: keep-all;
    word-wrap: break-word;
    text-decoration: none;
    text-transform: none;
    color: inherit;
    line-height: 1;
    scroll-behavior: smooth;
}

*, html, body {
    -ms-scroll-chaining: none;
        overscroll-behavior: contain;
    -webkit-text-size-adjust: 100%;
       -moz-text-size-adjust: 100%;
        -ms-text-size-adjust: 100%;
            text-size-adjust: 100%;
    -webkit-tap-highlight-color:  rgba(255, 255, 255, 0); 
}

body, html {
    overflow-x: hidden;
}

html {
    font-size: 16px;
}

strong {
    font-weight: 700;
}

.lim {
    font-family: "NotoSansJP", sans-serif !important;
}

/* app */
@-webkit-keyframes fadeIn {
    0% {
        opacity: 0;
    }
    
    100% {
        opacity: 1;
    }
}
@keyframes fadeIn {
    0% {
        opacity: 0;
    }
    
    100% {
        opacity: 1;
    }
}

#app {
    width: 100%;
    height: auto;
    opacity: 0;
}

#app.active {
    -webkit-animation-name: fadeIn;
            animation-name: fadeIn;
    -webkit-animation-duration: 1s;
            animation-duration: 1s;
    -webkit-animation-fill-mode: forwards;
            animation-fill-mode: forwards;
}

/* header */
#main-header {
    padding: calc(var(--std) * 1.5);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 200;
}

.item-main-header {
    width: 100%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: justify;
        -ms-flex-pack: justify;
            justify-content: space-between;
    opacity: 0;
    -webkit-animation-name: fadeIn;
            animation-name: fadeIn;
    -webkit-animation-duration: 1s;
            animation-duration: 1s;
    -webkit-animation-fill-mode: forwards;
            animation-fill-mode: forwards;
}

.item-main-header > a > img {
    width: auto;
    height: calc((var(--vh, 1vh) * 100 / 7) * 0.375);
}

#main-header .item-main-header:nth-child(2) {
    display: none;
}

#main-header.active .item-main-header:nth-child(1) {
    display: none;
}

#main-header.active .item-main-header:nth-child(2) {
    margin-left: calc(var(--std) * (1.5 * 0.75));
    margin-right: calc(var(--std) * (1.5 * 0.25));
    width: calc(100% - var(--std) * (1.5 * (0.75 + 0.25)));
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: justify;
        -ms-flex-pack: justify;
            justify-content: space-between;
}

html[lang="en"] #main-header.active .item-main-header:nth-child(2) {
    margin-left: calc(var(--std) * (1.5 * 1.5));
    width: calc(100% - var(--std) * (1.5 * (1.5 + 0.25)));
}

.item-main-header a {
    font-size: 1.375rem;
    font-weight: 800;
    line-height: 1.125;
    display: inline-block;
    -webkit-transform: scale(1.275, 1.0);
        -ms-transform: scale(1.275, 1.0);
            transform: scale(1.275, 1.0);
    letter-spacing: 0.1rem;
    font-family: "Pretendard", sans-serif;
}

.item-main-header a.transform-none {
    transform: none !important;
}

.item-main-header a:hover {
    cursor: pointer;
    opacity: 0.5;
}

.item-main-header .en a {
    font-family: "Helvetica", sans-serif;
    letter-spacing: 0.025rem;
}

#toggle-lang {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    gap: calc(var(--std) * (1.5 * 1.5));
}

#toggle-lang > button {
    font-size: 1.375rem;
    font-weight: 800;
    -webkit-transform: scale(1.275, 1.0);
        -ms-transform: scale(1.275, 1.0);
            transform: scale(1.275, 1.0);
    letter-spacing: 0.1rem;
    line-height: 1.125;
    border: none;
    border-radius: 0px;
    background-color: transparent;
    cursor: pointer;
}

#toggle-lang > button.active {
    opacity: 0.5;
}

#toggle-lang > button:hover {
    opacity: 0.5;
}

#set-ko {
    font-family: "Pretendard", sans-serif;
}

#set-en {
    font-family: "Pretendard", sans-serif;
    font-size: calc(1.375rem * 1.375);
    font-weight: 700;
}

#toggle-lang > .devider {
    position: relative;
    width: calc(var(--std) * 1.5);
    height: calc(var(--std) * 1.5);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
}

#toggle-lang > .devider::after {
    position: absolute;
    content: "";
    width: calc(var(--std) * (1.5 * 0.75));
    height: 3px;
    background-color: rgb(0, 0, 0);
    -webkit-transform: rotate(-45deg);
        -ms-transform: rotate(-45deg);
            transform: rotate(-45deg);
}

/* graphic */
#graphic {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

svg > line {
    stroke: rgb(0, 0, 0);
    stroke-width: 5px;
}

/* main-content */
#main-content {
    position: relative;
    padding: calc(var(--std) * (1.5 * 3.0) * 1.5) 0;
    width: 100%;
    z-index: 10;
}

#main-content > .bg-image {
    margin: calc(var(--std) * 1.5);
    position: absolute;
    top: 0;
    left: 0;
    width: calc(100% - var(--std) * (1.5 * 2.0));
    height: calc(100% - var(--std) * (1.5 * 2.0));
    background-size: contain;
    background-image: url("../assets/images/line-graphic.svg");
    z-index: 5;
}

#main-content > .bg-color {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    z-index: 8;
}

.section {
    position: relative;
    width: 100%;
    height: auto;
    z-index: 10;
}

.section#main {
    color: rgb(0, 0, 0);
    width: 100%;
    height: calc(var(--vh, 1vh) * 100);
}

.section#main > .item-main {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#typography {
    padding: calc(var(--std) * 1.5);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    font-family: "Pretendard", sans-serif;
}

.item-typography:nth-child(1) {
    height: calc((100% / 7) * 2);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: start;
        -ms-flex-align: start;
            align-items: flex-start;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
}

.item-typography:nth-child(1) > img {
    width: auto;
    height: calc(100% - var(--std) * 1.5);
    -o-object-fit: contain;
       object-fit: contain;
    -o-object-position: center center;
       object-position: center center;
}

.item-typography:nth-child(2) {
    height: calc((100% / 7) * 5);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
}

.child-typography.above {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    height: calc((100% / 5) * 2);
}

.child-typography.above > .item-above {
    font-size: calc((var(--vh, 1vh) * 100 / 7) * 0.85);
    font-weight: 700;
    line-height: 1.125;
    -webkit-transform: scale(1.275, 1.0);
        -ms-transform: scale(1.275, 1.0);
            transform: scale(1.275, 1.0);
    letter-spacing: 1vh;
}

.child-typography.below {
    padding: 0 calc(var(--std) * 1.5);
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: end;
        -ms-flex-align: end;
            align-items: flex-end;
    -webkit-box-pack: justify;
        -ms-flex-pack: justify;
            justify-content: space-between;
    height: calc((100% / 5) * 3);
}

.child-typography.below > .item-below:nth-child(2) {
    -webkit-box-ordinal-group: 4;
        -ms-flex-order: 3;
            order: 3;
}

.child-typography.below > .item-below:nth-child(1),
.child-typography.below > .item-below:nth-child(2) {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
}

.item-below > .child-item-below {
    font-size: calc((var(--vh, 1vh) * 100 / 7) * 0.85);
    font-weight: 700;
    line-height: 1.125;
    -webkit-transform: scale(1.275, 1.0);
        -ms-transform: scale(1.275, 1.0);
            transform: scale(1.275, 1.0);
    letter-spacing: 1vh;
}

#custom-line {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
    width: 100%;
    height: 100%;
    z-index: 100;
}

.section {
    position: relative;
}

.section.after-main::after {
    position: absolute;
    content: "";
    left: calc((100% - var(--max-width)) / 2);
    bottom: 0;
    width: var(--max-width);
    height: 5px;
    background-color: #000000;
    -webkit-transform: rotate(10deg);
        -ms-transform: rotate(10deg);
            transform: rotate(10deg);
    z-index: 100;
}

.section.after-main:nth-child(2n-1):after {
    -webkit-transform: rotate(-10deg);
        -ms-transform: rotate(-10deg);
            transform: rotate(-10deg);
}

.section.after-main:last-child::after {
    content: none;
}

.section.after-main {
    padding: calc(var(--std) * (1.5 * 3.0) * 1.0) 0 calc(var(--std) * (1.5 * 3.0) * 2.0) 0;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    gap: calc(var(--std) * (1.5 * 3.0));
    font-family: "Helvetica", "Pretendard", sans-serif;
}

.section.after-main > .heading, 
.section.after-main > .content {
    margin: 0 auto;
    width: 100%;
    max-width: var(--max-width);
}

.section.after-main > .heading {
    padding: 0 calc(var(--std) * (1.5 * 2.0));
    text-align: center;
}

.section.after-main > .heading > .ko,
.section.after-main > .heading > .en {
    font-size: 2.125rem;
    font-weight: 800;
    -webkit-transform: scale(1.175, 1.0);
        -ms-transform: scale(1.175, 1.0);
            transform: scale(1.175, 1.0);
    letter-spacing: 0.1rem;
}

.section.after-main > .heading > .en {
    letter-spacing: 0.025rem;
}

.section.after-main > .heading > .ko {
    line-height: 1.5;
}

.section.after-main > .heading > .en {
    line-height: 1.25;
}

.artist {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    text-align: center;
}

.artist > .item-artist {
    -webkit-transform: scale(1.175, 1.0);
        -ms-transform: scale(1.175, 1.0);
            transform: scale(1.175, 1.0);
    letter-spacing: 0.1rem;
    text-align: center;
}

.ko > .artist > .item-artist {
    line-height: 1.25;
}

.en > .artist > .item-artist {
    line-height: 1.125;
    letter-spacing: 0.025rem;
}

.section.after-main > .content p {
    font-size: 1.375rem;
    font-weight: 500;
}

.section.after-main > .content.wide p {
    font-size: 1.5rem;
    font-weight: 500;
    -webkit-transform: scale(1.175, 1.0);
        -ms-transform: scale(1.175, 1.0);
            transform: scale(1.175, 1.0);
    letter-spacing: 0.1rem;
    text-align: center;
}

.section.after-main > .content.wide .en p {
    letter-spacing: 0.025rem;
}

.section.after-main > .content .ko p {
    line-height: 1.75;
}

.section.after-main > .content .en p {
    line-height: 1.5;
}

.cont-gallery {
    margin: 0 auto;
    position: relative;
    width: var(--max-width);
}

.gallery > .item-gallery {
    display: none;
}

.gallery > .item-gallery.active {
    display: block;
    opacity: 0;
    -webkit-animation-name: fadeIn;
            animation-name: fadeIn;
    -webkit-animation-duration: 1s;
            animation-duration: 1s;
    -webkit-animation-fill-mode: forwards;
            animation-fill-mode: forwards;
}

.cont-navi {
    position: absolute;
    top: 0;
    left: calc(var(--std) * (1.5 * 2.0) * 1.5 * (-1));
    width: calc(100% + var(--std) * (1.5 * 2.0) * 3.0);
    height: 0;
    padding-top: calc(100% * (750 / 1920));
}

.cont-navi > .navi {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    -webkit-box-pack: justify;
        -ms-flex-pack: justify;
            justify-content: space-between;
}

.item-navi {
    width: calc(var(--std) * (1.5 * 2.0));
    height: calc(var(--std) * (1.5 * 2.0));
    border: none;
    border-radius: 0px;
    background-color: transparent;
    cursor: pointer;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
}

.item-navi:hover {
    opacity: 0.5;
}

.item-navi > .icon {
    position: relative;
    left: calc(var(--std) * (1.5 * 2.0) * 0.125);
    width: calc(var(--std) * (1.5 * 2.0) * 0.5);
    height: calc(var(--std) * (1.5 * 2.0) * 0.5);
    border-top: 3px solid rgb(0, 0, 0);
    border-right: 3px solid rgb(0, 0, 0);
    -webkit-transform: rotate(-135deg);
        -ms-transform: rotate(-135deg);
            transform: rotate(-135deg);
}

.item-navi:nth-child(2) > .icon {
    left: auto;
    right: calc(var(--std) * (1.5 * 2.0) * 0.125);
    -webkit-transform: rotate(45deg);
        -ms-transform: rotate(45deg);
            transform: rotate(45deg);
}

figure {
    width: 100%;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    gap: calc(var(--std) * (1.5 * 0.5));
}

figure > .thumbnail {
    position: relative;
    width: 100%;
    height: 0;
    padding-top: calc(100% * (750 / 1920));
    overflow: hidden;
}

figure > .thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    -o-object-fit: cover;
       object-fit: cover;
    -o-object-position: center center;
       object-position: center center;
}

figure > .thumbnail + figcaption {
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
}

figure > .thumbnail + figcaption .ko {
    line-height: 1.75;
}

figure > .thumbnail + figcaption .en {
    line-height: 1.5;
}

.cont-video {
    margin: 0 auto;
    width: 100%;
    max-width: var(--max-width);
    overflow: hidden;
}

.video-thumbnail {
    position: relative;
    width: 100%;
    height: 0;
    padding-top: calc(100% * (9 / 16));
}

.video-thumbnail > iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    -o-object-fit: cover;
       object-fit: cover;
    -o-object-position: center center;
       object-position: center center;
}

/* option */
.ko, .en {
    display: none;
}

html[lang="ko"] .ko, html[lang="en"] .en {
    display: block;
    opacity: 0;
    -webkit-animation-name: fadeIn;
            animation-name: fadeIn;
    -webkit-animation-duration: 1s;
            animation-duration: 1s;
    -webkit-animation-fill-mode: forwards;
            animation-fill-mode: forwards;
}

::-moz-selection {
    background-color: rgb(0, 0, 0);
    color: rgb(255, 255, 255);
}

::selection {
    background-color: rgb(0, 0, 0);
    color: rgb(255, 255, 255);
}

/* grid */
#cont-grid {
    display: none;
}

.grid {
    position: fixed;
    z-index: 9999;
}

.grid:nth-child(1) {
    top: calc(var(--std) * 1.5);
    left: 0;

    width: 100%;
    height: 1px;
    border-bottom: 1px solid rgb(255, 0, 255);
}

.grid:nth-child(2) {
    bottom: calc(var(--std) * 1.5);
    left: 0;

    width: 100%;
    height: 1px;
    border-bottom: 1px solid rgb(255, 0, 255);
}

.grid:nth-child(3) {
    left: calc(var(--std) * 1.5);
    top: 0;

    width: 1px;
    height: 100%;
    border-right: 1px solid rgb(255, 0, 255);
}

.grid:nth-child(4) {
    right: calc(var(--std) * 1.5);
    top: 0;

    width: 1px;
    height: 100%;
    border-right: 1px solid rgb(255, 0, 255);
}

.grid:nth-child(5) {
    top: calc((((100% - var(--std) * (1.5 * 2.0)) / 7) * 2));
    left: 0;

    width: 100%;
    height: 1px;
    border-bottom: 1px solid rgb(0, 255, 255);
}

.grid:nth-child(6) {
    top: calc((var(--std) * 1.5) + (((100% - var(--std) * (1.5 * 2.0)) / 7) * 2));
    left: 0;

    width: 100%;
    height: 1px;
    border-bottom: 1px solid rgb(0, 255, 255);
}

.grid:nth-child(7) {
    top: calc((var(--std) * 1.5) + (((100% - var(--std) * (1.5 * 2.0)) / 7) * 4));
    left: 0;

    width: 100%;
    height: 1px;
    border-bottom: 1px solid rgb(0, 255, 255);
}

.grid:nth-child(8) {
    left: calc((100% - var(--max-width)) / 2);
    top: 0;

    width: 1px;
    height: 100%;
    border-right: 1px solid rgb(0, 255, 0);
}

.grid:nth-child(9) {
    right: calc((100% - var(--max-width)) / 2);
    top: 0;

    width: 1px;
    height: 100%;
    border-right: 1px solid rgb(0, 255, 0);
}

.grid:nth-child(10) {
    left: calc((100% - var(--max-width)) / 2 - var(--std) * 1.5);
    top: 0;

    width: 1px;
    height: 100%;
    border-right: 1px solid rgb(0, 255, 0);
}

.grid:nth-child(11) {
    right: calc((100% - var(--max-width)) / 2 - var(--std) * 1.5);
    top: 0;

    width: 1px;
    height: 100%;
    border-right: 1px solid rgb(0, 255, 0);
}

.grid:nth-child(12) {
    left: calc((100% - var(--max-width)) / 2 - var(--std) * (1.5 * 3.0));
    top: 0;

    width: 1px;
    height: 100%;
    border-right: 1px solid rgb(0, 255, 0);
}

.grid:nth-child(13) {
    right: calc((100% - var(--max-width)) / 2 - var(--std) * (1.5 * 3.0));
    top: 0;

    width: 1px;
    height: 100%;
    border-right: 1px solid rgb(0, 255, 0);
}

.grid:nth-child(14) {
    left: calc((100% - var(--max-width)) / 2 - var(--std) * (1.5 * 4.0));
    top: 0;

    width: 1px;
    height: 100%;
    border-right: 1px solid rgb(0, 255, 0);
}

.grid:nth-child(15) {
    right: calc((100% - var(--max-width)) / 2 - var(--std) * (1.5 * 4.0));
    top: 0;

    width: 1px;
    height: 100%;
    border-right: 1px solid rgb(0, 255, 0);
}

/* responsive */
@media screen and (max-width: 840px) {
    :root {
        --max-width: 100%;
    }

    .section.after-main > .heading, .section.after-main > .content {
        padding: 0 calc(var(--std) * 1.5);
    }

    .section.after-main::after {
        left: calc(var(--std) * 1.5);
        width: calc(100% - var(--std) * (1.5 * 2.0));
    }

    .section.after-main:nth-child(3) > .heading {
        padding: 0 calc(var(--std) * (1.5 * 4.0));
    }

    .section.after-main > .content.wide {
        padding: 0 calc(var(--std) * (1.5 * 4.0));
    }

    .cont-gallery {
        width: calc(100% - var(--std) * (1.5 * 2.0) * 3.0);
    }

    .cont-navi {
        left: calc(var(--std) * (1.5 * 2.0) * (-1));
        width: calc(100% + var(--std) * (1.5 * 4.0));
    }

    .item-navi {
        width: calc(var(--std) * (1.5 * 1.0));
        height: calc(var(--std) * (1.5 * 1.0));
    }

    .item-navi > .icon {
        left: calc(var(--std) * (1.5 * 1.0) * 0.125);
        width: calc(var(--std) * (1.5 * 1.0) * 0.75);
        height: calc(var(--std) * (1.5 * 1.0) * 0.75);
        border-top: 1.5px solid rgb(0, 0, 0);
        border-right: 1.5px solid rgb(0, 0, 0);
    }

    .item-navi:nth-child(2) > .icon {
        right: calc(var(--std) * (1.5 * 1.0) * 0.125);
    }

    .cont-video {
        margin: 0 auto;
        width: 100%;
        max-width: calc(100% - var(--std) * (1.5 * 2.0));
    }
}

@media screen and (max-width: 640px) {
    svg > line {
        stroke-width: 3px;
    }

    #main-header.active {
        padding: 0 calc(var(--std) * 1.5);
        background-color: rgb(255, 255, 255);
        color: rgb(0, 0, 0);
        height: calc(var(--std) * (1.5 * 1.0));
        border-bottom: 1px solid rgba(230, 230, 230, 0.1);
        -webkit-box-shadow: 0 1.5px 3px rgba(0, 0, 0, 0.1);
                box-shadow: 0 1.5px 3px rgba(0, 0, 0, 0.1);
    }

    .item-main-header a {
        font-size: 0.7rem;
        letter-spacing: 0.05rem;
    }

    .section.after-main > .content.wide p {
        font-size: 1rem;
    }

    #main-header.active #go-home {
        position: absolute;
        left: calc(var(--std) * 1.0);
    }

    #main-header.active .item-main-header:nth-child(2) {
        margin: 0;
        width: 100%;
        height: 100%;
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-align: center;
            -ms-flex-align: center;
                align-items: center;
    }

    html[lang="en"] #main-header.active #go-home {
        left: calc(var(--std) * 1.6125);
    }

    #go-home a {
        position: relative;
        top: -1px;
    }

    #toggle-lang {
        position: absolute;
        right: calc(var(--std) * 0.6125);
        gap: calc(var(--std) * 1.0);
    }

    #toggle-lang > button {
        font-size: 0.7rem;
        letter-spacing: 0.05rem;
    }

    #set-en {
        font-size: calc(0.7rem * 1.375);
        font-weight: 700;
    }

    #main-content {
        padding: calc(var(--std) * (1.5 * 1.5) * 1.5) 0;
    }

    .section.after-main {
        padding: calc(var(--std) * (1.5 * 1.5) * 1.0) 0 calc(var(--std) * (1.5 * 1.5) * 2.0) 0;
        gap: calc(var(--std) * (1.5 * 1.75));
    }

    .section.after-main:nth-child(3) > .heading {
        padding: 0 calc(var(--std) * (1.5 * 2.5));
    }

    .section.after-main > .content.wide {
        padding: 0 calc(var(--std) * (1.5 * 2.5));
    }

    .section.after-main::after {
        height: 3px;
    }

    #typography {
        -webkit-box-pack: justify;
            -ms-flex-pack: justify;
                justify-content: space-between;
    }
    
    .item-typography:nth-child(1) {
        height: calc((100% / 3) * 1);
    }

    .item-typography:nth-child(2) {
        height: calc((100% / 3) * 2);
        display: -webkit-box;
        display: -ms-flexbox;
        display: flex;
        -webkit-box-pack: end;
            -ms-flex-pack: end;
                justify-content: flex-end;
    }

    .item-main-header > a > img {
        height: calc(((var(--vh, 1vh) * 100 / 7) * 0.375) * 0.6125);
    }

    .item-typography:nth-child(1) > img {
        height: calc(100% - var(--std) * (1.5 * 4.0));
    }

    .child-typography.above {
        height: auto;
    }

    .child-typography.below {
        padding: 0 calc(var(--std) * 0.375);
        height: auto;
    }

    .child-typography.above > .item-above {
        font-size: calc(((var(--vh, 1vh) * 100 / 7) * 0.85) * 0.4875);
        letter-spacing: calc(var(--vh, 1vh) * 0.4875);
    }

    .item-below > .child-item-below {
        font-size: calc(((var(--vh, 1vh) * 100 / 7) * 0.85) * 0.4875);
        letter-spacing: calc(var(--vh, 1vh) * 0.4875);
    }

    .section.after-main > .heading > .ko, 
    .section.after-main > .heading > .en {
        font-size: 1.375rem;
    }

    .section.after-main > .content p {
        font-size: 1rem;
    }

    figure > .thumbnail + figcaption {
        font-size: 0.75rem;
    }

    .cont-gallery {
        width: calc(100% - var(--std) * (1.5 * 2.0) * 2.0);
    }

    .cont-navi {
        left: calc(var(--std) * (1.5 * 1.0) * (-1));
        width: calc(100% + var(--std) * (1.5 * 2.0));
    }

    .item-navi {
        width: calc(var(--std) * (1.5 * 1.0));
        height: calc(var(--std) * (1.5 * 1.0));
    }

    .item-navi > .icon {
        left: -3px;
        width: calc(var(--std) * (1.5 * 1.0) * 0.5);
        height: calc(var(--std) * (1.5 * 1.0) * 0.5);
        border-top: 1.5px solid rgb(0, 0, 0);
        border-right: 1.5px solid rgb(0, 0, 0);
    }

    .item-navi:nth-child(2) > .icon {
        right: -3px;
    }
}