.cont_section .charter_header {
	margin-top: 80px;
}
.cont_section .ethical_title {
	font-size: 32px;
	font-weight: 600;
	line-height: 150%;
}
@media (max-width: 768px) {
	.cont_section .ethical_title {
		font-size: 20px;
		line-height: 140%;
	}
}
.cont_section .ethical_title {
	margin-bottom: 8px;
	text-align: center;
}
.cont_section .ethical_subtitle {
	text-align: center;
}
.cont_section .ethical_subtitle.default {
	font-size: 18px;
	font-weight: 500;
	line-height: 150%;
}
@media (max-width: 768px) {
	.cont_section .ethical_subtitle.default {
		font-size: 16px;
	}
}
.cont_section .ethical_subtitle.default {
	color: #666666;
}
.cont_section--principles {
	padding-top: 80px;
	padding-bottom: 140px;
}
.cont_section--gray {
	padding-top: 80px;
	padding-bottom: 140px;
	background-color: #f4f5f5;
}
.cont_section--gray .ethical_title {
	text-align: left;
}

.cont_section__vision {
	position: relative;
	height: 300vh;
	background-color: #ffffff;
}
.cont_section__vision .sticky_wrapper {
	position: sticky;
	top: 0;
	width: 100%;
	min-height: 100vh;
	aspect-ratio: 1.84/1;
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
}
.cont_section__vision .vision_text_area {
	text-align: center;
}
.cont_section__vision .vision_text_area .line {
	margin-bottom: 0.2em;
	color: #e6e6e6;
}
.cont_section__vision .vision_text_area span {
	transition: color 0.1s linear;
	font-weight: 600;
	line-height: 140%;
}
.cont_section__vision .vision_text_area span {
	font-size: 40px;
}
@media screen and (max-width: 1920px) {
	.cont_section__vision .vision_text_area span {
		font-size: 2.0833333333vw;
	}
}
@media (max-width: 768px) {
	.cont_section__vision .vision_text_area span {
		font-size: 24px;
	}
}
@media screen and (max-width: 768px) and (max-width: 768px) {
	.cont_section__vision .vision_text_area span {
		font-size: 6.4vw;
	}
}
.cont_section__vision .vision_text_area span {
	font-weight: 900;
}
.cont_section__vision .vision_text_area span.active {
	color: #3b5ea7;
}
@media (max-width: 768px) {
	.cont_section__vision .vision_text_area span {
		font-size: 32px;
	}
}

.cont_section__vision-visual {
	position: relative;
	height: 400vh;
	background-color: #ffffff;
}
.cont_section__vision-visual .sticky_wrapper {
	position: sticky;
	top: 0;
	width: 100%;
	min-height: 100vh;
	aspect-ratio: 1.84/1;
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
}
.cont_section__vision-visual .visual_area {
	position: relative;
	width: calc(100% - 80px);
	margin: 0 auto;
	aspect-ratio: 1.84/1;
	border-radius: 40px;
	overflow: hidden;
}
@media (max-width: 768px) {
	.cont_section__vision-visual .visual_area {
		width: calc(100% - 40px);
		border-radius: 20px;
		aspect-ratio: unset;
		height: calc(100% - 40px);
	}
}
.cont_section__vision-visual .img_box {
	width: 100%;
	height: 100%;
	position: relative;
}
.cont_section__vision-visual .img_box .img_item {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
}
.cont_section__vision-visual .img_box .img_item img {
	width: 100%;
	height: 100%;
	-o-object-fit: cover;
	   object-fit: cover;
	display: block;
}
.cont_section__vision-visual .img_box .img_item {
	opacity: 0;
	transition: opacity 0.8s ease;
}
.cont_section__vision-visual .img_box .img_item.active {
	opacity: 1;
	z-index: 1;
}
.cont_section__vision-visual .txt_box {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	width: 100%;
	text-align: center;
	z-index: 10;
	color: #ffffff;
}
.cont_section__vision-visual .txt_box .txt_item {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	width: 100%;
	opacity: 0;
	transition: opacity 0.8s ease;
}
.cont_section__vision-visual .txt_box .txt_item.active {
	opacity: 1;
	z-index: 1;
}
.cont_section__vision-visual .txt_box .txt_item .label {
	display: block;
	color: rgba(255, 255, 255, 0.6);
	margin-bottom: 16px;
	font-size: 20px;
	font-weight: 600;
	line-height: 150%;
}
@media (max-width: 768px) {
	.cont_section__vision-visual .txt_box .txt_item .label {
		font-size: 18px;
	}
}
.cont_section__vision-visual .txt_box .txt_item .title {
	font-weight: 600;
	line-height: 140%;
}
.cont_section__vision-visual .txt_box .txt_item .title {
	font-size: 40px;
}
@media screen and (max-width: 1920px) {
	.cont_section__vision-visual .txt_box .txt_item .title {
		font-size: 2.0833333333vw;
	}
}
@media (max-width: 768px) {
	.cont_section__vision-visual .txt_box .txt_item .title {
		font-size: 24px;
	}
}
@media screen and (max-width: 768px) and (max-width: 768px) {
	.cont_section__vision-visual .txt_box .txt_item .title {
		font-size: 6.4vw;
	}
}
.cont_section__vision-visual .txt_box .txt_item .title {
	color: #ffffff;
}

.cont_section__idea {
	position: relative;
	height: 4000px;
	background-color: #ffffff;
}
.cont_section__idea .sticky_wrapper {
	position: sticky;
	top: 0;
	width: 100%;
	min-height: 100vh;
	aspect-ratio: 1.84/1;
	overflow: hidden;
}
.cont_section__idea .idea_text_area {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	text-align: center;
	width: 100%;
	z-index: 10;
	transition: opacity 0.4s;
}
.cont_section__idea .idea_text_area.hidden {
	opacity: 0;
	pointer-events: none;
}
.cont_section__idea .idea_text_area .sub_title {
	font-size: 18px;
	font-weight: 500;
	line-height: 150%;
}
@media (max-width: 768px) {
	.cont_section__idea .idea_text_area .sub_title {
		font-size: 16px;
	}
}
.cont_section__idea .idea_text_area .sub_title {
	color: #888888;
	margin-bottom: 24px;
}
.cont_section__idea .idea_text_area .main_title {
	font-size: 40px;
	font-weight: 600;
	line-height: 140%;
}
@media (max-width: 768px) {
	.cont_section__idea .idea_text_area .main_title {
		font-size: 24px;
	}
}
.cont_section__idea .idea_text_area .main_title {
	color: #888888;
	line-height: 1.4;
}
.cont_section__idea .idea_text_area .main_title .line {
	color: #e6e6e6;
	margin-bottom: 0.2em;
}
.cont_section__idea .idea_text_area .main_title .line.point span.active {
	color: #3b5ea7;
}
.cont_section__idea .idea_text_area .main_title .line span {
	font-weight: 600;
	line-height: 140%;
}
.cont_section__idea .idea_text_area .main_title .line span {
	font-size: 40px;
}
@media screen and (max-width: 1920px) {
	.cont_section__idea .idea_text_area .main_title .line span {
		font-size: 2.0833333333vw;
	}
}
@media (max-width: 768px) {
	.cont_section__idea .idea_text_area .main_title .line span {
		font-size: 24px;
	}
}
@media screen and (max-width: 768px) and (max-width: 768px) {
	.cont_section__idea .idea_text_area .main_title .line span {
		font-size: 6.4vw;
	}
}
.cont_section__idea .idea_text_area .main_title .line span {
	font-weight: 600;
	vertical-align: middle;
}
.cont_section__idea .idea_text_area .main_title .line span.active {
	color: #222222;
}
.cont_section__idea .idea_text_area .main_title .line .img_space {
	display: inline-block;
	width: 80px;
	height: 50px;
	border-radius: 12px;
	vertical-align: middle;
	margin: 0 10px;
	background: #eee;
	overflow: hidden;
}
.cont_section__idea .idea_text_area .main_title .line .img_space img {
	width: 100%;
	height: 100%;
	-o-object-fit: cover;
	   object-fit: cover;
}
@media (max-width: 768px) {
	.cont_section__idea .idea_text_area .main_title .line .img_space {
		width: 60px;
		height: 40px;
	}
}
.cont_section__idea .idea_img_wrap {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	pointer-events: none;
	z-index: 10;
}
.cont_section__idea .idea_img_box {
	position: absolute;
	overflow: hidden;
	border-radius: 12px;
	background-color: #000;
	/* GSAP controlled */
	top: 0;
	left: 0;
	width: 0;
	height: 0;
	opacity: 0;
	will-change: width, height, opacity, transform;
}
.cont_section__idea .bg_layer {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 1;
}
.cont_section__idea .bg_layer .bg_item {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	opacity: 0;
	transition: opacity 0.8s ease;
}
.cont_section__idea .bg_layer .bg_item img {
	width: 100%;
	height: 100%;
	-o-object-fit: cover;
	   object-fit: cover;
}
.cont_section__idea .bg_layer .bg_item::after {
	content: "";
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: rgba(0, 0, 0, var(--bg-overlay-alpha, 0.4));
}
.cont_section__idea .bg_layer .bg_item.active {
	opacity: 1;
	z-index: 1;
}
.cont_section__idea .content_layer {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 10;
	display: flex;
	opacity: 0;
	pointer-events: none;
	transition: opacity 0.4s ease;
}
.cont_section__idea .content_layer.visible {
	opacity: 1;
	pointer-events: auto;
}
.cont_section__idea .content_layer .col_item {
	flex: 1;
	position: relative;
	border-right: 1px solid rgba(255, 255, 255, 0.15);
	transition: background-color 0.4s ease;
}
.cont_section__idea .content_layer .col_item:last-child {
	border-right: none;
}
.cont_section__idea .content_layer .col_item.active {
	background-color: rgba(0, 0, 0, 0.3);
}
.cont_section__idea .content_layer .col_item.active .content_box {
	top: 50%;
	transform: translate(-50%, -50%);
}
.cont_section__idea .content_layer .col_item.active .content_box .txt_group .desc_wrap {
	max-height: 500px; /* arbitrary large value for transition */
	opacity: 1;
	margin-top: 40px;
}
.cont_section__idea .content_layer .col_item.active .content_box .txt_group .tit {
	opacity: 1;
}
.cont_section__idea .content_layer .col_item.active .content_box .big_char {
	opacity: 1;
}
.cont_section__idea .content_layer .col_item .content_box {
	position: absolute;
	left: 50%;
	top: calc(100% - 80px);
	transform: translate(-50%, -100%);
	color: #ffffff;
	display: flex;
	flex-direction: column;
	align-items: center;
	/* Initial state hidden (GSAP controlled in JS, or handled here?) */
	/* The requirement says content fades in after expansion. */
	/* We'll use a parent class on idea_img_box or content_layer to show all content */
	opacity: 0;
	transition: opacity 0.6s ease, transform 0.6s ease, top 0.6s ease;
}
.cont_section__idea .content_layer .col_item .content_box .big_char {
	font-weight: 900;
	line-height: 1;
	margin-bottom: 10px;
	opacity: 0.5;
	transition: opacity 0.4s;
}
.cont_section__idea .content_layer .col_item .content_box .big_char {
	font-size: 100px;
}
@media screen and (max-width: 1920px) {
	.cont_section__idea .content_layer .col_item .content_box .big_char {
		font-size: 5.2083333333vw;
	}
}
.cont_section__idea .content_layer .col_item .content_box .txt_group {
	width: 100%;
}
.cont_section__idea .content_layer .col_item .content_box .txt_group .tit {
	font-weight: 600;
	line-height: 150%;
}
.cont_section__idea .content_layer .col_item .content_box .txt_group .tit {
	font-size: 32px;
}
@media screen and (max-width: 1920px) {
	.cont_section__idea .content_layer .col_item .content_box .txt_group .tit {
		font-size: 1.6666666667vw;
	}
}
@media (max-width: 768px) {
	.cont_section__idea .content_layer .col_item .content_box .txt_group .tit {
		line-height: 140%;
	}
	.cont_section__idea .content_layer .col_item .content_box .txt_group .tit {
		font-size: 20px;
	}
}
@media screen and (max-width: 768px) and (max-width: 768px) {
	.cont_section__idea .content_layer .col_item .content_box .txt_group .tit {
		font-size: 5.3333333333vw;
	}
}
.cont_section__idea .content_layer .col_item .content_box .txt_group .tit {
	text-align: center;
	display: block;
	margin-bottom: 0;
	white-space: nowrap;
	opacity: 0.5;
}
.cont_section__idea .content_layer .col_item .content_box .txt_group .desc_wrap {
	max-height: 0;
	opacity: 0;
	overflow: hidden;
	text-align: center;
	transition: max-height 0.6s ease, opacity 0.6s ease, margin 0.6s ease;
}
.cont_section__idea .content_layer .col_item .content_box .txt_group .desc_wrap .sub {
	font-weight: 600;
	line-height: 150%;
}
.cont_section__idea .content_layer .col_item .content_box .txt_group .desc_wrap .sub {
	font-size: 20px;
}
@media screen and (max-width: 1920px) {
	.cont_section__idea .content_layer .col_item .content_box .txt_group .desc_wrap .sub {
		font-size: 1.0416666667vw;
	}
}
@media (max-width: 768px) {
	.cont_section__idea .content_layer .col_item .content_box .txt_group .desc_wrap .sub {
		font-size: 18px;
	}
}
@media screen and (max-width: 768px) and (max-width: 768px) {
	.cont_section__idea .content_layer .col_item .content_box .txt_group .desc_wrap .sub {
		font-size: 4.8vw;
	}
}
.cont_section__idea .content_layer .col_item .content_box .txt_group .desc_wrap .sub {
	margin-bottom: 12px;
}
.cont_section__idea .content_layer .col_item .content_box .txt_group .desc_wrap .desc_list li {
	font-weight: 400;
	line-height: 150%;
}
.cont_section__idea .content_layer .col_item .content_box .txt_group .desc_wrap .desc_list li {
	font-size: 16px;
}
@media screen and (max-width: 1920px) {
	.cont_section__idea .content_layer .col_item .content_box .txt_group .desc_wrap .desc_list li {
		font-size: 0.8333333333vw;
	}
}
@media (max-width: 768px) {
	.cont_section__idea .content_layer .col_item .content_box .txt_group .desc_wrap .desc_list li {
		line-height: 140%;
	}
	.cont_section__idea .content_layer .col_item .content_box .txt_group .desc_wrap .desc_list li {
		font-size: 14px;
	}
}
@media screen and (max-width: 768px) and (max-width: 768px) {
	.cont_section__idea .content_layer .col_item .content_box .txt_group .desc_wrap .desc_list li {
		font-size: 3.7333333333vw;
	}
}
.cont_section__idea .content_layer .col_item .content_box .txt_group .desc_wrap .desc_list li {
	position: relative;
	padding-left: 10px;
	opacity: 0.8;
	list-style: none;
}
.cont_section__idea .content_layer.visible .col_item .content_box {
	opacity: 1;
}
@media (max-width: 768px) {
	.cont_section__idea {
		height: 1500px;
	}
	.cont_section__idea .idea_img_box {
		position: relative;
		width: 100% !important;
		height: auto !important;
		border-radius: 20px;
		overflow: visible;
		transform: none !important;
		display: flex;
		flex-direction: column;
		gap: 0;
	}
	.cont_section__idea .bg_layer {
		position: absolute;
		top: 0;
		left: 0;
		width: 100%;
		height: 100%;
		border-radius: 20px;
		overflow: hidden;
		/* Mobile: show active bg or just first? */
		/* Let's keep the logic of active bg. */
	}
	.cont_section__idea .content_layer {
		position: relative;
		display: flex;
		flex-direction: column;
		height: auto;
		opacity: 1;
		pointer-events: auto;
	}
	.cont_section__idea .content_layer.visible .col_item .content_box {
		opacity: 1;
		transform: none;
	}
	.cont_section__idea .content_layer .col_item {
		width: 100%;
		flex: none;
		height: 300px; /* Minimal height for mobile item */
		border-right: none;
		border-bottom: 1px solid rgba(255, 255, 255, 0.15);
	}
	.cont_section__idea .content_layer .col_item:last-child {
		border-bottom: none;
	}
	.cont_section__idea .content_layer .col_item.active {
		background-color: rgba(0, 0, 0, 0.4);
		height: auto; /* Expand if active? */
		min-height: 400px;
	}
	.cont_section__idea .content_layer .col_item .content_box {
		left: 20px;
		right: 20px;
		bottom: 30px;
		top: auto;
		opacity: 1 !important;
		transform: none !important;
	}
	.cont_section__idea .content_layer .col_item .content_box .big_char {
		font-size: 50px;
	}
	.cont_section__idea .content_layer .col_item .content_box .txt_group .tit {
		font-size: 20px;
	}
	.cont_section__idea .content_layer .col_item .content_box .desc_wrap {
		/* Mobile always show or only active? */
		/* Let's follow desktop logic: active expands */
	}
}

.cont_section__diagram {
	margin-top: 40px;
	background-color: #f4f5f5;
}
.cont_section__diagram .diagram__title {
	font-size: 32px;
	font-weight: 600;
	line-height: 150%;
}
@media (max-width: 768px) {
	.cont_section__diagram .diagram__title {
		font-size: 20px;
		line-height: 140%;
	}
}
.cont_section__diagram .diagram__title {
	margin-bottom: 24px;
}
.cont_section__diagram .cont_wrap {
	max-width: 1380px;
	margin: 0 auto;
	padding: 80px 0 140px;
}
@media (max-width: 768px) {
	.cont_section__diagram .cont_wrap {
		padding: 40px 20px 60px;
	}
}

/* Mobile Version Update */
@media (max-width: 768px) {
	.idea_img_section_mo {
		position: relative;
		height: auto;
		pointer-events: auto;
		padding: 0 20px;
		margin-top: 20px;
	}
	.idea_img_section_mo .idea_mobile_list {
		display: flex;
		flex-direction: column;
		gap: 16px;
	}
	.idea_img_section_mo .idea_mobile_item {
		position: relative;
		width: 100%;
		height: 480px;
		border-radius: 20px;
		overflow: hidden;
	}
	.idea_img_section_mo .idea_mobile_item .bg_img {
		position: absolute;
		top: 0;
		left: 0;
		width: 100%;
		height: 100%;
	}
	.idea_img_section_mo .idea_mobile_item .bg_img img {
		width: 100%;
		height: 100%;
		-o-object-fit: cover;
		   object-fit: cover;
	}
	.idea_img_section_mo .idea_mobile_item .bg_img::after {
		content: "";
		position: absolute;
		top: 0;
		left: 0;
		width: 100%;
		height: 100%;
		background: rgba(0, 0, 0, 0.4);
	}
	.idea_img_section_mo .idea_mobile_item .content_box_mo {
		position: relative;
		z-index: 2;
		height: 100%;
		display: flex;
		flex-direction: column;
		align-items: center;
		justify-content: center;
		text-align: center;
		color: #fff;
		padding: 0 20px;
	}
	.idea_img_section_mo .idea_mobile_item .content_box_mo .big_char {
		display: block;
		font-weight: 900;
		font-size: 80px;
		line-height: 1;
		margin-bottom: 16px;
	}
	.idea_img_section_mo .idea_mobile_item .content_box_mo .tit {
		display: block;
		font-size: 32px;
		font-weight: 600;
		line-height: 150%;
		margin-bottom: 20px;
	}
}
@media (max-width: 768px) and (max-width: 768px) {
	.idea_img_section_mo .idea_mobile_item .content_box_mo .tit {
		font-size: 20px;
		line-height: 140%;
	}
}
@media (max-width: 768px) {
	.idea_img_section_mo .idea_mobile_item .content_box_mo .sub {
		font-size: 20px;
		font-weight: 600;
		line-height: 150%;
		margin-bottom: 24px;
	}
}
@media (max-width: 768px) and (max-width: 768px) {
	.idea_img_section_mo .idea_mobile_item .content_box_mo .sub {
		font-size: 18px;
	}
}
@media (max-width: 768px) {
	.idea_img_section_mo .idea_mobile_item .content_box_mo .desc_list li {
		font-size: 16px;
		font-weight: 400;
		line-height: 150%;
		opacity: 0.8;
	}
}
@media (max-width: 768px) and (max-width: 768px) {
	.idea_img_section_mo .idea_mobile_item .content_box_mo .desc_list li {
		font-size: 14px;
		line-height: 140%;
	}
}