.who-v4 {
	padding: 112px 0;
	background: #fff
}

.who-v4-top {
	display: flex;
	justify-content: space-between;
	gap: 50px;
	align-items: end;
	margin-bottom: 43px
}

.who-v4-top h2 {
    margin: 0;
    font-size: 34px;
    line-height: 1.5;
}

.who-v4-top p {
	max-width: 510px;
	color: var(--muted);
	line-height: 1.9;
	margin: 0
}

.who-v4-stage {
	display: grid;
	grid-template-columns: 1.05fr .95fr;
	min-height: 460px;
	background: #edf6f1
}

.who-v4-view {
	background: linear-gradient(0deg, #073b2c9b, #073b2c0a), url('../images/lab-work.jpg') center/cover;
	position: relative;
	overflow: hidden;
	transition: .55s
}

.who-v4-view.is-alt {
	background-image: linear-gradient(0deg, #073b2c9b, #073b2c0a), url('../images/lab-detail.jpg')
}

.who-v4-view:before {
	content: "";
	width: 290px;
	height: 290px;
	border: 1px solid #ffffff80;
	border-radius: 50%;
	position: absolute;
	right: -85px;
	top: -80px;
	transition: .6s
}

.who-v4-view.is-alt:before {
	transform: scale(1.35);
	right: -25px;
	top: -45px
}

.who-v4-caption {
	position: absolute;
	left: 31px;
	bottom: 28px;
	color: #fff
}

.who-v4-caption b {
	display: block;
	font-size: 29px;
	line-height: 1.2;
	max-width: 350px
}

.who-v4-caption span {
	font-size: 12px;
	color: #cfecd9;
	letter-spacing: 2px;
	display: block;
	margin-bottom: 11px
}

.who-v4-panel {
	padding: 43px 48px;
	display: flex;
	flex-direction: column;
	justify-content: space-between
}

.who-v4-copy {
    font-size: 23px;
    line-height: 1.5;
    font-weight: 700;
    max-width: 430px;
    margin: 0;
}

.who-v4-tabs {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 10px;
	margin-top: 30px
}

.who-v4-tab {
	border: 1px solid #cfe0d7;
	background: transparent;
	text-align: left;
	padding: 15px;
	cursor: pointer;
	transition: .25s
}

.who-v4-tab b {
	font-size: 14px;
	color: var(--green);
	display: block;
	margin-bottom: 5px
}

.who-v4-tab span {
	font-size: 13px;
	color: var(--muted)
}

.who-v4-tab:hover,
.who-v4-tab.is-active {
	background: var(--green);
	border-color: var(--green)
}

.who-v4-tab:hover b,
.who-v4-tab.is-active b,
.who-v4-tab:hover span,
.who-v4-tab.is-active span {
	color: #fff
}

.solution-v2-photo {
	cursor: pointer
}

.solution-v2-photo:after {
	content: "点击探索现场方案 ↗";
	position: absolute;
	left: 26px;
	top: 25px;
	padding: 9px 12px;
	background: #ffffffdf;
	color: var(--green);
	font-size: 12px;
	font-weight: 700;
	transition: .3s
}

.solution-v2-photo {
	position: relative
}

.solution-v2-photo.is-swapped {
	background-image: linear-gradient(0deg, #07392f9c, #07392f19), url('../images/lab-detail.jpg')
}

.solution-v2-photo.is-swapped:after {
	content: "返回方案场景 ↗";
	background: var(--green);
	color: #fff
}

.solution-v2-photo.is-swapped>div {
	transform: translateY(-8px)
}

.solution-v2-photo>div {
	transition: .35s
}

.case-v4 {
	padding: 105px 0;
	background: #f7faf8
}

.case-v4-head {
	text-align: center;
	max-width: 650px;
	margin: 0 auto 46px
}

.case-v4-head h2 {
	font-size: 44px;
	margin: 0 0 12px
}

.case-v4-head p {
	color: var(--muted);
	line-height: 1.8;
	margin: 0
}

.case-v4-layout {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 0;
	background: #fff;
	box-shadow: 0 16px 40px #17433210;
	min-height: 480px
}

.case-v4-view {
	position: relative;
	overflow: hidden;
	background: linear-gradient(0deg, #06342cd4, #06342c08), url('../images/lab-detail.jpg') center/cover;
	transition: .55s
}

.case-v4-view.is-market {
	background-image: linear-gradient(0deg, #06342cd4, #06342c08), url('../images/lab-work.jpg')
}

.case-v4-view.is-dining {
	background-image: linear-gradient(0deg, #06342cd4, #06342c08), url('../images/lab-hero.jpg')
}

.case-v4-view-content {
	position: absolute;
	left: 39px;
	right: 39px;
	bottom: 36px;
	color: #fff
}

.case-v4-view-content span {
	font-size: 12px;
	color: #c9ebd5;
	letter-spacing: 2px
}

.case-v4-view-content h3 {
	font-size: 32px;
	line-height: 1.25;
	margin: 12px 0
}

.case-v4-view-content p {
	font-size: 14px;
	line-height: 1.75;
	color: #d9ece1;
	margin: 0
}

.case-v4-list {
	padding: 25px 46px;
	display: grid;
	align-content: center
}

.case-v4-item {
	border: 0;
	border-top: 1px solid #dbe9e1;
	background: transparent;
	padding: 22px 0;
	text-align: left;
	display: grid;
	grid-template-columns: 43px 1fr 24px;
	gap: 14px;
	align-items: center;
	cursor: pointer;
	transition: .25s
}

.case-v4-item:last-child {
	border-bottom: 1px solid #dbe9e1
}

.case-v4-item>b {
	color: var(--green);
	font-size: 13px
}

.case-v4-item h3 {
	font-size: 19px;
	margin: 0 0 5px
}

.case-v4-item p {
	font-size: 13px;
	color: var(--muted);
	line-height: 1.6;
	margin: 0;
	max-height: 0;
	overflow: hidden;
	opacity: 0;
	transition: .3s
}

.case-v4-item span {
	font-size: 20px;
	color: var(--green);
	transition: .25s
}

.case-v4-item:hover,
.case-v4-item.is-active {
	padding-left: 11px;
	background: #f1faf5
}

.case-v4-item:hover p,
.case-v4-item.is-active p {
	max-height: 45px;
	opacity: 1
}

.case-v4-item:hover span,
.case-v4-item.is-active span {
	transform: translateX(5px)
}

.service-v3-image {
	transition: .55s
}

.service-v3-image.is-training {
	background-image: linear-gradient(0deg, #06342ca0, #06342c08), url('../images/lab-work.jpg')
}

.service-v3-image.is-response {
	background-image: linear-gradient(0deg, #06342ca0, #06342c08), url('../images/lab-hero.jpg')
}

.service-v3-more {
	margin-top: 28px;
	display: inline-flex;
	align-items: center;
	gap: 10px;
	color: var(--green);
	font-weight: 700;
	border-bottom: 1px solid #92c9aa;
	padding-bottom: 6px
}

.service-v3-more:hover {
	color: #087542;
	border-color: #087542
}

@media(max-width:900px) {
	.who-v4-top {
		display: grid;
		grid-template-columns: 1fr;
		gap: 20px
	}

	.who-v4-stage,
	.case-v4-layout {
		grid-template-columns: 1fr
	}

	.who-v4-view,
	.case-v4-view {
		min-height: 340px
	}
	.who-v4-caption b {
   
    font-size: 18px;
    
}
}

@media(max-width:560px) {

	.who-v4,
	.case-v4 {
		padding: 75px 0
	}

	.who-v4-top h2,
	.case-v4-head h2 {
		font-size: 23px
	}

	.who-v4-panel {
		padding: 32px 24px
	}

	.who-v4-copy {
		font-size: 18px
	}

	.who-v4-tabs {
		grid-template-columns: 1fr
	}

	.case-v4-list {
		padding: 18px 23px
	}

	.case-v4-view-content {
		left: 25px;
		right: 25px
	}

	.case-v4-view-content h3 {
		font-size: 27px
	}
}