:root {
	--color-black: #252525;
	--color-black_trans09: rgba(37, 37, 37, 0.9);
	--color-black_trans: rgba(0, 0, 0, 0.1);
	--color-hover: #a1a1a1;
	--color-white: #f0f0f0;
	--color-white_trans: rgba(255, 255, 255, 0.1);
	--color-point: aquamarine;
	--size-width: 100vw;
}

/* 초기화 */
* {
	padding: 0px;
	margin: 0px;
	box-sizing: border-box;
	font-family: "SUIT Variable", sans-serif;
	word-break: keep-all;
}
a:link {
	color: inherit;
	text-decoration: none;
}
a:visited {
	color: inherit;
	text-decoration: none;
}
a:hover {
	color: inherit;
	text-decoration: none;
}
button {
	font-size: inherit;
	font-weight: inherit;
	background-color: inherit;
	color: inherit;
	font-weight: inherit;
	border: none;
}
/* 기본레이아웃 */
html {
}
body {
	background: var(--color-white);
	display: flex;
	justify-content: center;
	font-weight: 400;
	font-size: 20px;
	color: var(--color-black);
}
.container {
	width: 100%;
	display: flex;
	flex-direction: column;
	align-items: center;
}
nav,
section,
footer {
	display: flex;
	flex-direction: column;
	align-items: center;
	padding: 0px 20px;
}
nav,
nav .area,
section,
section .area,
footer,
footer .area {
	width: 100%;
}
.area {
	width: 100%;
	max-width: 1800px;
}

.bg_black {
	color: var(--color-white);
	background-color: var(--color-black);
}
.bg_white {
	color: var(--color-black);
	background-color: var(--color-white);
}
.selected {
	color: var(--color-point);
}

::-webkit-scrollbar {
	/* 스크롤바 전체   */
	/* border-radius: 10px; */
	width: 8px;
	background-color: lightgray;
}
::-webkit-scrollbar-thumb {
	/* 스크롤 막대 */
	border-radius: 10px;
	background-color: var(--color-black);
}
::-webkit-scrollbar-track {
	/* 스크롤 막대 외부 */
	/* background-color: #773030; */
}

/* nav */
nav {
	position: fixed;
	top: 0px;
	background-color: var(--color-white_trans);
	/* background-color: rgba(255, 255, 255, 0.1); */
	/* background-color: var(--color-white); */
	transition: 0.3s;
	z-index: 9;
	backdrop-filter: blur(5px);
}
nav .area {
	height: 80px;
	padding: 5px 0px;
	display: flex;
	flex-direction: row;
	justify-content: space-between;
	align-items: center;
	/* border-style: solid; */
	/* border-width: 0px 0px 1px 0px;
	border-color: #252525; */
}
.logo {
	height: 30px;
}
.logo svg {
	width: 100%;
	height: 100%;
}
nav .menu-box {
	display: flex;
	flex-direction: row;
	justify-content: space-between;
	align-items: center;
}
.btn.menu {
	padding-left: 20px;
	text-align: center;
	font-weight: 900;
}
.menu.work {
	padding-left: 20px;
	text-align: center;
	font-weight: 900;
}

section {
	position: relative;
	top: 0px;
}

/* splash */
.splash-introduce {
	display: flex;
	justify-content: center;
	height: 100vh;
}

.splash-introduce .maintext {
	font-size: 8rem;
	font-weight: 500;
	padding: 0px 0px 20px 9px;
	line-height: 9rem;
}
.splash-introduce .maintext-small {
	font-size: 3rem;
	font-weight: 100;
}
.splash-introduce .subtext {
	font-size: 1.6rem;
	font-weight: 300;
	padding-left: 17px;
}

.splash-introduce .subtext::after {
	content: ">";
	font-weight: 500;
	/* width: 50px;
	height: 50px; */
	transform: rotate(90deg);
	font-size: 50px;
	text-align: center;
	position: absolute;
	left: calc(50% - 20px);
	/* bottom: 2vh; */
	color: rgba(0, 0, 0, 0);
	animation-name: arrow_down;
	animation-duration: 3s;
	animation-iteration-count: infinite;
	animation-timing-function: ease-in-out;
	animation-delay: 2s;
}
.splash-introduce .subtext::before {
	content: "DOWN";
	font-weight: 500;
	/* width: 50px;
	height: 50px; */
	font-size: 10px;
	text-align: center;
	position: absolute;
	left: calc(50% - 22px);
	/* bottom: 2vh; */
	color: rgba(0, 0, 0, 0);
	animation-name: arrow_down;
	animation-duration: 3s;
	animation-iteration-count: infinite;
	animation-timing-function: ease-in-out;
	animation-delay: 2s;
}

#splash-introduce-bg {
	position: absolute;
	top: 0px;
	left: 0px;
	width: 100%;
	height: 100%;
	overflow: hidden;
	z-index: -1;
}
#splash-introduce-bg::before {
	content: "";
	background-color: rgb(255 255 255 / 50%);
	width: 100%;
	height: 100%;
	position: absolute;
	z-index: 1;
	backdrop-filter: blur(5px);
}
#splash-introduce-bg > div {
	position: absolute;
	top: 0px;
	left: 0px;
	width: 100%;
	height: 100vh;
}

#splash-introduce-bg > div > img {
	object-fit: cover;
	width: 100%;
	height: 100%;
}

.splash-thumbnail {
	/* height: calc(100vh - 80px); */
	background-color: var(--color-black);
	color: var(--color-white);
	display: flex;
	justify-content: center;
	align-items: center;
	text-align: center;
	flex-direction: column;
	padding-top: 100px;
	padding-bottom: 100px;
}

.splash-thumbnail .category_list {
	text-align: center;
	padding: 30px 0px 30px 0px;
	font-weight: 900;
}
.splash-thumbnail .category_list button {
	padding: 0px 10px;
	font-weight: 200;
	display: none;
}

.splash-thumbnail .area {
	display: flex;
	flex-wrap: wrap;
	justify-content: flex-start;
	transition: all 0.1s;
	row-gap: 40px;
	/* column-gap: 20px; */
}
.splash-thumbnail .area .thumbnail-box {
	position: relative;
	display: flex;
	flex-direction: column;
	width: calc(100% / 3);
	max-width: calc(100% / 3);
	filter: brightness(0.8);
	/* filter: brightness(0.8) saturate(0); */
	min-width: 350px;
	/* max-width: 50%; */
	max-height: 350px;
	flex-grow: 1;
	overflow: hidden;
	transition: all 0.5s ease;
}
.splash-thumbnail .area .thumbnail-box .thumbnail-content-media {
	overflow: hidden;
	width: 100%;
	position: relative;
}
.splash-thumbnail .area .thumbnail-box .thumbnail-content-media:after {
	content: "";
	display: block;
	padding-bottom: 100%;
}
.splash-thumbnail .area .thumbnail-box .thumbnail-content-media img {
	position: absolute;
	left: 0px;
	top: 0px;
	width: 100%;
	height: 100%;
	object-fit: cover;
	padding: 1px;
	transition: all 0.5s ease;
}
.splash-thumbnail .area .thumbnail-box .thumbnail-content-name {
	/* position: absolute; */
	/* top: 50%; */
	width: 100%;
	text-align: left;
	padding: 5px 0px 0px 2px;
	font-weight: 900;
	/* display: none; */
}
.splash-thumbnail .area .thumbnail-box .thumbnail-content-desc {
	/* position: absolute; */
	/* top: 50%; */
	width: 100%;
	text-align: left;
	padding: 0px 0px 0px 2px;
	/* font-weight: 400; */
	font-weight: 100;
	/* display: none; */
}
.splash-thumbnail .area .thumbnail-box .thumbnail-content-id,
.splash-thumbnail .area .thumbnail-box .thumbnail-content-type {
	display: none;
}

/* popup-full */
.popup-full {
	position: fixed;
	top: 0;
	left: 0;
	z-index: 9;
	width: 100%;
	height: 100%;
	background-color: var(--color-black_trans09);
	backdrop-filter: blur(50px);
	display: flex;
	justify-content: center;
	align-items: center;
	flex-direction: column;
	font-weight: 900;
	color: var(--color-white);
}
.popup-full img {
	max-width: 90vw;
	max-height: 90vh;
	/* width: 100%; */
}

.scroll_lock {
	overflow: hidden;
}
/* footer */
footer {
	padding: 50px 0px;
	text-align: center;
}

/* contact */
.contact {
	/* width: 100%; */
	height: calc(100vh - 125px);
	text-align: center;
	display: flex;
	justify-content: center;
}

/* content_view */
.content_view {
	min-height: calc(100vh - 80px - 127px);
	display: flex;
	justify-content: center;
	align-items: center;
}
.content_view .area img {
	width: 100%;
}

/* about */
.about {
	/* width: 100%; */
	/* height: calc(100vh - 125px); */
	/* text-align: center; */
	/* display: flex;
	justify-content: center; */
}
.about_title {
	width: 100%;
	height: 100vh;
	text-align: center;
	display: flex;
	justify-content: center;
	font-size: 3rem;
	flex-direction: column;
}
.about_title::after {
	content: ">";
	font-weight: 500;
	/* width: 50px;
	height: 50px; */
	transform: rotate(90deg);
	font-size: 50px;
	text-align: center;
	position: absolute;
	left: calc(50% - 20px);
	/* bottom: 2vh; */
	color: rgba(0, 0, 0, 0);
	animation-name: arrow_down;
	animation-duration: 3s;
	animation-iteration-count: infinite;
	animation-timing-function: ease-in-out;
	animation-delay: 2s;
}
.about_title::before {
	content: "DOWN";
	font-weight: 500;
	/* width: 50px;
	height: 50px; */
	font-size: 10px;
	text-align: center;
	position: absolute;
	left: calc(50% - 22px);
	/* bottom: 2vh; */
	color: rgba(0, 0, 0, 0);
	animation-name: arrow_down;
	animation-duration: 3s;
	animation-iteration-count: infinite;
	animation-timing-function: ease-in-out;
	animation-delay: 2s;
}

.about_article_title {
	text-align: center;
	font-size: 2rem;
	padding-bottom: 50px;
	font-weight: 800;
}

.history_content {
	font-size: 2rem;
	padding-bottom: 10px;
	margin: 0px auto;
	text-align: left;
}
.history {
	padding: 100px 0px;
}
.history_content {
	max-width: 286px;
}
.history_content .year {
	font-weight: 900;
	font-size: 1rem;
}
.history_content .desc {
	font-weight: 300;
	padding-bottom: 20px;
	font-size: 2rem;
}
.skills {
	padding: 100px 0px;
}
.skills_content {
	text-align: center;
	max-width: 350px;
	margin: 0px auto;
}
.skills_content img {
	width: 50px;
	border-radius: 10px;
	padding: 3px;
}

/* content */
.content {
	padding: 100px 0px;
}

.content_title {
	padding-top: 100px;
	padding-bottom: 20px;
	text-align: center;
	font-weight: 700;
	font-size: 3rem;
}
.content_desc {
	text-align: center;
	font-weight: 200;
	font-size: 2rem;
	padding-left: 10px;
	padding-right: 10px;
	padding-bottom: 100px;
}
figure {
	width: 100%;
	text-align: center;
}
figure img {
	max-width: 100%;
	max-height: calc(100vh - 80px);
	/* max-height: 100vh; */
}

@keyframes arrow_down {
	0% {
		color: rgba(0, 0, 0, 0);
		top: 88vh;
	}
	50% {
		color: var(--color-black);
		top: 90vh;
	}
	100% {
		color: rgba(0, 0, 0, 0);
		top: 88vh;
	}
}