body {
	visibility: hidden;
	position: relative;
}

body > .pop-overlay {
	display: none;
	position: absolute;
	width: 100%;
	height: 100%;
	background-color: rgba(0, 0, 0, 0.5);
	z-index: 20;
}

header .help {
	position: absolute;
	right: 40px;
	top: 40px;
	background: none;
	width: 54px;
	height: 54px;
	border: none;
	padding: 0;
}

.header-content {
}
.header-content .title {
	left: 390px;
	top: 110px;
	position: absolute;
	line-height: 1.3;
}
.header-content .title > span {
	font-size: 28px;
	font-family: 'recipekorea';
	color: #000;
}
.header-content .title h1 {
	font-size: 58px;
	font-family: 'recipekorea';
	color: #000;
	margin-top: 10px;
}
.header-content .title h1 span {
	color: #641fb1;
}
.header-content .menu {
	position: absolute;
	right: 170px;
	top: 108px;
	display: flex;
	align-items: center;
	justify-content: flex-end;
}
.header-content .menu button {
	border: none;
	cursor: pointer;
	text-indent: -9999px;
	overflow: hidden;
	margin-left: 26px;
}
.header-content .menu button.btn-menu1 {
	width: 227px;
	height: 126px;
	background: url('../../img/2/science/btn_bg.png') no-repeat center center / cover;
}
.header-content .menu button.btn-menu2 {
	width: 282px;
	height: 126px;
	background: url('../../img/2/science/btn_bg2.png') no-repeat center center / cover;
}
.header-content .menu button.btn-menu3 {
	width: 282px;
	height: 126px;
	background: url('../../img/2/science/btn_bg3.png') no-repeat center center / cover;
}

.character {
	position: absolute;
	left: 100px;
	top: 115px;
	background: url('../../img/2/science/ch1.png') no-repeat center center / cover;
	width: 250px;
	height: 336px;
}
.character2 {
	position: absolute;
	left: 685px;
	top: 260px;
	background: url('../../img/2/science/ch2.png') no-repeat center center / cover;
	width: 94px;
	height: 80px;
}

main {
	display: flex;
	position: absolute;
	left: 70px;
	top: 295px;
	justify-content: flex-start;
	align-items: flex-start;
}

.sidebar {
	width: 605px;
	height: 678px;
	background: url('../../img/2/science/bg_box.png') no-repeat center center;
	padding: 50px 30px;
	box-sizing: border-box;
	z-index: 10;
}

.menu-item-list {
	display: flex;
	flex-direction: column;
	justify-content: center;
	gap: 10px;
	height: 578px;
}

.menu-item {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: flex-start;
	align-items: center;
	padding: auto;
	margin-bottom: 16px;
	cursor: pointer;
	border: 4px solid #feea3c;
	height: 100px;
	width: 100%;
	border-radius: 50px;
	background: #fff9c6;
	box-shadow: 0px 4px 10px 2px rgba(0, 0, 0, 0.2);
	padding-left: 125px;
	font-size: 36px;
	box-sizing: border-box;
	transition: all 0.3s ease;
}

.menu-item .icon {
	position: absolute;
	left: -4px;
	top: -4px;
	display: flex;
	align-items: center;
	justify-content: center;
	width: 106px;
	height: 100px;
	border-radius: 50px 0 50px 50px;
	background: #feea3c;
	transition: all 0.3s ease;
}
.menu-item .text {
	font-weight: 500;
	font-family: 'recipekorea';
	font-size: 36px;
	margin-top: 13px;
}
.menu-item .arrow {
	position: absolute;
	right: 30px;
	top: 50%;
	transform: translateY(-50%);
	height: 34px;
	width: 49px;
	display: none;
}

.menu-item.active {
	width: 636px;
	height: 100px;
	border: 6px solid #8447c8;
	background: #fff;
	margin-left: -45px;
}
.menu-item.active .icon {
	background: #8447c8;
	top: -6px;
}
.menu-item.active .arrow {
	display: block;
}

.content {
	width: 1208px;
	height: 667px;
	background: url('../../img/2/science/bg_box2.png') no-repeat left top;
	position: relative;
	left: -92px;
	top: -14px;
	padding-left: 125px;
	padding-top: 85px;
	padding-right: 35px;
	box-sizing: border-box;
}
.content::after {
	content: '';
	display: block;
	width: 83px;
	height: 74px;
	background: url('../../img/2/science/bg_box3.png') no-repeat left bottom;
	position: absolute;
	right: -30px;
	bottom: -25px;
}
.lesson-header {
	display: flex;
	justify-content: flex-end;
	position: absolute;
	right: 48px;
	top: 48px;
	font-family: 'Cafe24Ssurround';
	gap: 6px;
}
.lesson-header span {
	width: 88px;
	height: 32px;
	display: flex;
	align-items: center;
	justify-content: center;
	border-radius: 0 0 16px 16px;
	font-family: 'Cafe24Ssurround';
	font-size: 18px;
}
.lesson-header .e-book {
	color: #f6841c;
	/* background: #feeac4; */
	background: url(../../img/2/science/ebook_bg.png) no-repeat;
}
.lesson-header .pc {
	color: #08a0cc;
	/* background: #cef3f6; */
	background: url(../../img/2/science/lesson_bg.png);
}

.lesson-wrap {
	overflow-y: scroll;
	overflow-x: hidden;
	width: 100%;
	height: 550px;
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	justify-content: flex-start;
	gap: 5px;
	padding-right: 12px;
	display: none;
}

.lesson {
	width: 1025px;
	/* min-height: 60px; */
	padding: 10px 12px;
	display: flex;
	align-items: flex-start;
	justify-content: flex-start;
	gap: 20px;
	border-radius: 30px;
	box-sizing: border-box;
	transition: 0.3s;
}

.lesson-head {
	font-weight: bold;
	color: #8447c8;
	border: 2px solid #8447c8;
	font-size: 20px;
	width: 124px;
	height: 38px;
	display: flex;
	align-items: center;
	justify-content: center;
	border-radius: 19px;
	background: #fff;
	font-family: 'Cafe24Ssurround';
	transition: 0.3s;
}

.lesson-body {
	font-size: 28px;
	flex: 1;
	line-height: 1.2;
	font-family: 'Noto Sans KR';
	font-weight: 700;
	word-break: keep-all;
	text-indent: -1.15em;
	margin-left: 1em;
}
.lesson-foot {
	width: 230px;
	align-self: center;
	display: flex;
	align-items: center;
	justify-content: space-between;
}
.lesson-foot a {
	width: 52px;
	display: flex;
	align-items: center;
	justify-content: center;
	height: 42px;
}
.lesson.active {
	background: #fff9c6;
}
.lesson.active .lesson-head {
	background-color: #8447c8;
	color: #fff;
}

footer {
	position: absolute;
	right: 160px;
	bottom: 49px;
	display: flex;
	justify-content: space-between;
	align-items: center;
	width: 1073px;
}
.footer-content {
}
.footer-content-left {
	/* background: url(../../img/2/science/btn_bottom_bg2.png) no-repeat center / cover; */
	background: #9068bd;
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 7px 7px 7px 20px;
	height: 60px;
	border-radius: 30px;
	box-sizing: border-box;
	gap: 20px;
}
.footer-content .btn-progress {
	font-family: 'Noto Sans KR';
	font-weight: 700;
	font-size: 22px;
	color: #ffffff;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
}
.footer-content .btn-progress em {
	color: #000;
	width: 66px;
	height: 46px;
	border-radius: 10px;
	background: #ffffff;
	display: flex;
	align-items: center;
	justify-content: center;
}
.footer-content button {
	border: none;
	cursor: pointer;
	background: none;
}
.footer-content .e-book-icon {
	font-size: 22px;
	color: #ffffff;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
	font-family: 'Noto Sans KR';
	font-weight: 700;
}
.btn-go {
	margin: 0;
	padding: 0;
}

.footer-content-right {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
	position: relative;
	top: 0px;
}

.footer-content-right button {
	width: 165px;
	height: 52px;
	border-radius: 23px;
	background: url('../../img/2/science/btn_bottom_bg.png') no-repeat left top;
	box-sizing: border-box;
	padding: 0;
	gap: 10px;
	font-size: 22px;
	color: #000;
	font-family: 'Noto Sans KR';
	font-weight: 700;
	letter-spacing: -0.04em;
	line-height: 46px;
	vertical-align: top;
}
.footer-content-right button img {
	margin-right: 10px;
	position: relative;
	top: 5px;
}
.lesson-wrap::-webkit-scrollbar {
	width: 16px;
}

.lesson-wrap::-webkit-scrollbar-thumb {
	background-color: #7543ad;
	border-radius: 8px;
	width: 16px;
}

.lesson-wrap::-webkit-scrollbar-track {
	background-color: #ededed;
	width: 6px;
	border-radius: 3px;
}
.lesson-wrap::-webkit-scrollbar-track:vertical {
	background: -webkit-linear-gradient(180deg, #fff, #fff, #fff, #fff, #ededed, #ededed, #ededed, #fff, #fff, #fff);
	border-radius: 3px;
}

/* hover effect */
.lesson:hover {
	background: #fff9c6;
	transition: 0.3s;
}

.lesson:hover .lesson-head {
	background: #8447c8;
	color: #fff;
	transition: 0.3s;
}

/* lesson-foot 아이콘 hover effect */
.vr_img:hover {
	content: url(../../img/2/science/icon_vr_on.png);
}
.book_img:hover {
	content: url(../../img/2/science/icon_book_on.png);
}
.pc_img:hover {
	content: url(../../img/2/science/icon_pc_on.png);
}
.science_img:hover {
	content: url(../../img/2/science/icon_science_on.png);
}

.lesson-wrap1 .lesson:nth-child(3) .lesson-play:hover img {
	content: url(../../img/2/science/icon_science_on.png);
}

.lesson-wrap4 .lesson:nth-child(1) .lesson-play:hover img {
	content: url(../../img/2/science/icon_360_on.png);
}

.lesson-wrap4 .lesson:nth-child(3) .lesson-play:hover img {
	content: url(../../img/2/science/icon_science_on.png);
}

.multi {
	display: flex;
	width: 52px;
	gap: 4px;
	justify-content: space-between;
}
.multi a {
	width: 26px;
	height: 29px;
}
.multi img {
	width: 26px;
	height: 29px;
}