.introduce {
	text-align: center;
	font-size: 16px;
	color: rgb(102, 102, 102);
	margin-top: 102px;
}

.introduce h5 {
	font-size: 36px;
	color: rgb(51, 51, 51);
	margin-bottom: 26px;
}

.extend {
	width: 1200px;
	margin: 0 auto;
	margin-bottom: 91px;
}

.extend>div:nth-child(2) {
	display: flex;
	justify-content: space-between;
	margin-top: 90px;
}

.extend>div:nth-child(2) img {
	width: 200px;
	margin-bottom: 33px;
}

.extend>div:nth-child(2)>div {
	width: 293px;
	display: flex;
	flex-direction: column;
	align-items: center;
	font-size: 14px;
	color: rgb(153, 153, 153);
	text-align: center;
	line-height: 30px;
}

.extend>div:nth-child(2)>div h5 {
	font-size: 22px;
	color: rgb(51, 51, 51);
	margin-bottom: 20px;
}

.scheme>div:nth-child(2) p:nth-child(2) {
	line-height: 30px;
	margin-bottom: 14px!important;
}

.index .scheme>div>a>div>p:nth-child(4) {
	margin-top: 14px;
}

.index .scheme>div>a>div {
	height: auto!important;
	padding-bottom: 20px;
}

.serve .reason>div>div {
	width: 25%!important;
	margin-top: 75px;
}

.serve .reason>div>div p {
	line-height: 24px;
}

.index .scheme>div>a>div>p:nth-child(4) {
	-webkit-line-clamp: 10!important;
	text-align: justify;
	text-justify: inter-ideograph;
}

.characteristic>div:nth-child(2) {
	margin-top: 59px;
}

.characteristic>div:nth-child(2)>div>div {
	width: 1200px;
	height: 499px;
	margin: 0 auto;
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.characteristic>div:nth-child(2) .text {
	width: 580px;
	height: 325px;
	display: flex;
	flex-direction: column;
	justify-content: space-around;
}

.characteristic>div:nth-child(2)>div>div h5 {
	font-size: 36px;
	color: rgb(51, 51, 51);
}

.characteristic>div:nth-child(2)>div>div p {
	font-size: 18px;
	color: rgb(51, 51, 51);
	line-height: 30px;
	text-align: justify;
	text-justify: inter-ideograph;
}

.characteristic>div:nth-child(2)>div>div span {
	width: 151px;
	height: 41px;
	background-color: #f9fafc;
	border-radius: 21px;
	border: solid 1px #1e94ff;
	display: flex;
	justify-content: center;
	align-items: center;
	font-size: 16px;
	color: rgb(30, 148, 255);
	cursor: pointer;
}

.characteristic>div:nth-child(2)>div:nth-child(1),
.characteristic>div:nth-child(2)>div:nth-child(3),
.characteristic>div:nth-child(2)>div:nth-child(5) {
	background-color: rgb(249, 250, 252);
}

.characteristic>div:nth-child(2)>div:nth-child(1) img {
	width: 620px;
}

.characteristic>div:nth-child(2)>div:nth-child(2) img {
	width: 497px;
}

.characteristic>div:nth-child(2)>div:nth-child(3) img {
	width: 540px;
}

.characteristic>div:nth-child(2)>div:nth-child(4) img {
	width: 484px;
}

.characteristic>div:nth-child(2)>div:nth-child(5) img {
	width: 523px;
}

.characteristic>div:nth-child(2)>div:nth-child(6) img {
	width: 439px;
}

.demand {
	width: 1200px;
	margin: 0 auto;
}

.demand img {
	width: 1200px;
	margin-top: 80px;
}