html {
	font-size: 50px;
}

@media screen and (min-width: 320px) {
	html {
		font-size: 21.33px;
	}
}

@media screen and (min-width: 360px) {
	html {
		font-size: 24px;
	}
}

@media screen and (min-width: 375px) {
	html {
		font-size: 25px;
	}
}

@media screen and (min-width: 384px) {
	html {
		font-size: 25.6px;
	}
}

@media screen and (min-width: 400px) {
	html {
		font-size: 26.66666667px;
	}
}

@media screen and (min-width: 411px) {
	html {
		font-size: 27.4px;
	}
}

@media screen and (min-width: 414px) {
	html {
		font-size: 27.6px;
	}
}

@media screen and (min-width: 424px) {
	html {
		font-size: 28.26666667px;
	}
}

@media screen and (min-width: 480px) {
	html {
		font-size: 32px;
	}
}

@media screen and (min-width: 540px) {
	html {
		font-size: 36px;
	}
}

@media screen and (min-width: 720px) {
	html {
		font-size: 48px;
	}
}

@media screen and (min-width: 750px) {
	html {
		font-size: 50px;
	}
}

/* *********************************************
                    基本默认值  
 ***********************************************/
* {
	margin: 0;
	padding: 0;
}

h1,
h2,
h3,
p {
	margin: 0;
	padding: 0;
}

body {
	font-family: "Source Han Sans CN";
	font-size: 0.32rem;
	color: #333333;
	background-color: #fff;
}

ul,
li {
	margin: 0;
	padding: 0;
	list-style: none;
}

a {
	color: #303133;
	text-decoration: none;
	cursor: pointer;
}

a:hover {
	text-decoration: none;
}

.COMMON-TITLE {
	text-align: center;
}

.COMMON-TITLE h2 {
	font-size: 0.52rem;
	font-weight: bold;
	margin-bottom: 0.1rem;
}

.COMMON-TITLE span {
	font-size: 0.28rem;
	color: #cccccc;
}

.modal {
	display: none;
	position: fixed;
	z-index: 1000;
	left: 0;
	top: 0;
	width: 100%;
	height: 100%;
	background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
	background-color: #fff;
	margin: 15% auto;
	padding: 20px;
	border: 1px solid #888;
	width: 300px;
	text-align: center;
}

.close {
	color: #aaa;
	float: right;
	font-size: 28px;
	font-weight: bold;
	cursor: pointer;
}

.close:hover,
.close:focus {
	color: #000;
	text-decoration: none;
	cursor: pointer;
}

/* *********************************************
                  banner
***********************************************/
header {
	display: flex;
	justify-content: center;
	width: 100%;
	height: 11.2rem !important;
	background: url(../img/default-bg-header.png);
	background-size: 38.4rem 11.2rem;
}

.header-title {
	position: relative;
	display: flex;
	flex-direction: column;
	width: 9rem;
	margin-top: 1.5rem;
}

.header-title h1 {
	font-size: 0.92rem;
	font-weight: bold;
	color: #181818;
}

.header-title-describe {
	line-height: 0.52rem;
	color: #333333;
	margin-top: 0.8rem;
}

.header-title-describe:nth-child(3) {
	margin-top: 0.6rem;
}

.header-title-describe span {
	font-weight: bold;
}

.header-title-btn {
	width: 4.12rem;
	height: 1.08rem;
	border-radius: 0.54rem;
	background-color: #1faf9e;
	line-height: 1.08rem;
	text-align: center;
	color: #ffffff;
	cursor: pointer;
	margin-top: 0.8rem;
}

.header-img {
	width: 11.2rem;
	height: 8.24rem;
	margin: 1rem 0 0 2.26rem;
}

/* *********************************************
                     situation
   ***********************************************/
.situation {
	display: flex;
	flex-direction: column;
	align-items: center;
	width: 100%;
	margin-top: 2.4rem;
}

.situation-list {
	display: flex;
	margin-top: 1.6rem;
}

.situation-list-item {
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	width: 2.88rem;
	margin: 0 1.2rem;
}

.situation-list-item img {
	width: 2rem;
	height: 2rem;
}

.situation-list-item h3 {
	text-align: center;
	font-size: 0.32rem;
	font-weight: 500;
	margin-top: 0.4rem;
}

/* *********************************************
                     teach
   ***********************************************/
.teach {
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	width: 100%;
	height: 11.32rem;
	background: url(../img/default-bg-mid.png) center no-repeat;
	background-size: 38.4rem 11.32rem;
	margin-top: 2.4rem;
}

.teach-main {
	display: flex;
	color: #ffffff;
}

.teach-main-survey {
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	width: 6rem;
	height: 4.8rem;
	background-color: rgba(31, 175, 158, 0.7);
	text-align: center;
	font-size: 0.32rem;
}

.teach-main-survey p:first-child {
	font-size: 0.44rem;
}

.teach-main-survey p span {
	color: #ffd240;
}

.teach-main-list {
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	width: 12rem;
	height: 4.8rem;
	background-color: rgba(0, 0, 0, 0.7);
}

.teach-main-list p {
	/* width: 5.5rem; */
	width: 5.9rem;
	text-align: start;
	font-size: 0.36rem;
	margin: 0.4rem 0;
}

.teach-warn {
	font-size: 0.32rem;
	font-size: 0.44rem;
	font-weight: bold;
	color: #ffd240;
	margin-top: 1.6rem;
}

/* *********************************************
                     difficulty
***********************************************/
.difficulty {
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	width: 100%;
	margin-top: 2.4rem;
}

.difficulty-content {
	display: flex;
	justify-content: center;
	align-items: center;
	margin-top: 1.6rem;
}

.difficulty-content img {
	width: 5.2rem;
	height: 4.4rem;
}

.difficulty-content-list {
	display: flex;
	flex-direction: column;
	margin-left: 3.8rem;
}

.difficulty-content-list p {
	position: relative;
	margin: 0 0 0 0.4rem;
}

.difficulty-content-list p span {
	color: #af1f46;
	font-weight: 600;
}

.difficulty-content-list p:nth-child(n + 2) {
	margin-top: 1rem;
}

.difficulty-content-list p::before {
	position: absolute;
	left: -1.4rem;
	content: "01";
	width: 1rem;
	height: 0.6rem;
	background: #a2acbd;
	border-radius: 0.4rem 0.4rem 0 0.4rem;
	line-height: 0.6rem;
	text-align: center;
	color: #ffffff;
}

.difficulty-content-list p:nth-child(2)::before {
	content: "02";
}

.difficulty-content-list p:nth-child(3)::before {
	content: "03";
}

.difficulty-content-list p:nth-child(4)::before {
	content: "04";
}

/* *********************************************
                     advantages
   ***********************************************/
.advantages {
	display: flex;
	flex-direction: column;
	align-items: center;
	width: 100%;
	margin-top: 2.4rem;
}

.advantages-list {
	display: flex;
	margin-top: 1.6rem;
}

.advantages-item {
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	width: 5.7rem;
	height: 5.12rem;
	background-color: #f5f7fa;
	padding: 0 0.8rem;
	box-sizing: border-box;
	margin: 0 0.2rem;
}

.advantages-item h3 {
	position: relative;
	font-size: 0.32rem;
	font-weight: bold;
	color: #333333;
}

.advantages-item h3::before {
	position: absolute;
	top: -0.14rem;
	left: -0.8rem;
	content: "";
	width: 0.6rem;
	height: 0.6rem;
	background: url(../img/advantages-1.png) center no-repeat;
	background-size: 0.6rem;
}

.advantages-item:nth-child(2) h3::before {
	background: url(../img/advantages-2.png) center no-repeat;
	background-size: 0.6rem;
}

.advantages-item:nth-child(3) h3::before {
	background: url(../img/advantages-3.png) center no-repeat;
	background-size: 0.6rem;
}

.advantages-item:nth-child(4) h3::before {
	background: url(../img/advantages-4.png) center no-repeat;
	background-size: 0.6rem;
}

.advantages-item h3::after {
	position: absolute;
	top: 1.06rem;
	left: 50%;
	transform: translateX(-50%);
	content: "";
	width: 0.6rem;
	height: 0.12rem;
	background-color: #665fb6;
}

.advantages-item p {
	text-align: center;
	font-size: 0.28rem;
	color: #666666;
	margin-top: 1.46rem;
}

.advantages-item p span {
	color: #af1f46;
}

/* *********************************************
                     course
   ***********************************************/
.course {
	display: flex;
	flex-direction: column;
	align-items: center;
	width: 100%;
	height: 9.32rem;
	background: url(../img/default-bg-footer.png) center no-repeat;
	background-size: 38.4rem 9.32rem;
	padding: 1.28rem 0 1rem;
	box-sizing: border-box;
	margin-top: 2.4rem;
}

.course p {
	color: #fff;
}

.course-title h2 {
	color: #ffffff;
}

.course-title span {
	color: #a5dfd8;
}

.course-list {
	display: flex;
	margin: 1rem 0;
}

.course-list-item {
	width: 6rem;
	height: 2.6rem;
	background-color: #ffffff;
	border-radius: 0.2rem;
	padding: 0.8rem 0;
	box-sizing: border-box;
	text-align: center;
	margin: 0 1rem;
}

.course-list-item h3 {
	font-size: 0.32rem;
	font-weight: 600;
	color: #333333;
	margin-bottom: 0.4rem;
}

.course-list-item p {
	font-size: 0.28rem;
	color: #666666;
}

.course-btn {
	display: flex;
	justify-content: center;
	align-items: center;
	width: 5.2rem;
	height: 1.28rem;
	border-radius: 0.64rem;
	border: 0.04rem solid #ffffff;
	font-size: 0.28rem;
	color: #ffffff;
	cursor: pointer;
}

/* *********************************************
                     word
   ***********************************************/
.word {
	display: flex;
	flex-direction: column;
	align-items: center;
	width: 100%;
	padding: .4rem 0;
	box-sizing: border-box;
}

.word h2 {
	color: #ffffff;
}

.word p {
	width: 8rem;
	font-size: 0.32rem;
}

.word p:nth-child(2) {
	margin-top: 0.6rem;
}

.word p span {
	font-weight: 600;
	color: #af1f46;
}

/* *********************************************
                     footer
   ***********************************************/
footer {
	display: flex;
	align-items: center;
	width: 100%;
	height: 1.9rem !important;
	padding: 0 !important;
	background: #17181c;
}

.footer {
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
	text-align: center;
	width: 100%;
	overflow: hidden;
}

.footer-right {
	line-height: 0.32rem;
	font-size: 0.28rem;
	color: #999999;
}

.footer-right a {
	color: #999999;
}

.footer-right_link {
	display: flex;
	align-items: center;
	margin-top: 0.2rem;
}

.police {
	display: flex;
	align-items: center;
	margin-left: 0.6rem;
}

.police p {
	margin-left: 0.1rem;
}

.back-top {
	position: fixed;
	bottom: 1rem;
	right: 4rem;
	cursor: pointer;
	z-index: 99;
}

.back-top img {
	width: 1rem;
	height: 1rem;
}

/* *********************************************
                     max-width: 1220px
   ***********************************************/

@media screen and (max-width: 1220px) {
	.header-img {
		width: 10rem;
		height: 7.35rem;
		margin: 1rem 0 0 2rem;
	}
}

/* *********************************************
                     max-width: 768px
***********************************************/
@media screen and (max-width: 1024px) {
	.COMMON-TITLE h2 {
		font-size: 0.72rem;
		margin-bottom: 0.1rem;
	}

	.COMMON-TITLE span {
		font-size: 0.48rem;
	}

	/* *********************************************
                     header
	***********************************************/
	header {
		justify-content: flex-end;
		flex-direction: column-reverse;
		height: 21.5rem !important;
		background: url(../img/phone-bg-header.png) top center no-repeat;
		background-size: 15rem 11.2rem;
	}

	.header-title {
		width: 15rem;
		align-self: center;
		margin-top: 3.36rem;
	}

	.header-title h1 {
		text-align: center;
	}

	.header-title-describe {
		align-self: center;
		width: 13rem;
		font-size: 0.56rem;
		line-height: 0.84rem;
		text-align: center;
	}

	.header-title-btn {
		align-self: center;
		width: 6rem;
		height: 1.6rem;
		border-radius: 0.8rem;
		line-height: 1.6rem;
		font-size: 0.56rem;
		margin-top: 1rem;
	}

	.header-img {
		align-self: center;
		width: 10.6rem;
		height: auto;
		margin: 0.4rem 0 0 0;
	}

	/* *********************************************
										situation
	***********************************************/
	.situation-list {
		width: 10.8rem;
		flex-wrap: wrap;
		justify-content: space-between;
	}

	.situation-list-item {
		width: 4.4rem;
		margin: 0;
	}

	.situation-list-item:nth-child(n + 3) {
		margin-top: 1.6rem;
	}

	.situation-list-item img {
		width: 3.2rem;
		height: 3.2rem;
	}

	.situation-list-item h3 {
		font-size: 0.56rem;
		margin-top: 0.6rem;
	}

	/* *********************************************
                     teach
   ***********************************************/
	.teach {
		height: 21.6rem;
		background: url(../img/phone-bg-mid.png) center no-repeat;
		background-size: 15rem 21.6rem;
		margin-top: 2.4rem;
	}

	.teach-main {
		flex-direction: column;
	}

	.teach-main-survey {
		width: 13rem;
		font-size: 0.64rem;
	}

	.teach-main-survey p:first-child {
		font-size: 0.8rem;
	}

	.teach-main-list {
		width: 13rem;
		height: 7.2rem;
	}

	.teach-main-list p {
		width: 10.4rem;
		font-size: 0.64rem;
		margin: 0.4rem 0;
	}

	.teach-warn {
		font-size: 0.56rem;
	}

	/* *********************************************
                     difficulty
***********************************************/
	.difficulty-content {
		flex-direction: column;
	}

	.difficulty-content-list {
		justify-content: center;
		align-items: center;
		margin-left: 1.8rem;
	}

	.difficulty-content-list p {
		width: 10.4rem;
		font-size: 0.56rem;
		margin: 1.8rem 0 0 0.6rem;
	}

	.difficulty-content-list p:nth-child(n + 2) {
		margin-top: 1.8rem;
	}

	.difficulty-content-list p::before {
		left: -2.6rem;
		width: 2rem;
		height: 1.2rem;
		border-radius: 0.6rem 0.6rem 0 0.6rem;
		line-height: 1.2rem;
		font-size: 0.64rem;
	}

	/* *********************************************
                     advantages
   ***********************************************/
	.advantages-list {
		flex-direction: column;
		margin-top: 1rem;
	}

	.advantages-item {
		width: 13rem;
		height: 9.12rem;
		padding: 0 1.8rem;
		margin: 0.6rem 0 0 0;
	}

	.advantages-item h3 {
		font-size: 0.64rem;
	}

	.advantages-item h3::before {
		position: absolute;
		top: -0.28rem;
		left: -1.6rem;
		width: 1.2rem;
		height: 1.2rem;
		background-size: 1.2rem;
	}

	.advantages-item:nth-child(2) h3::before {
		background-size: 1.2rem;
	}

	.advantages-item:nth-child(3) h3::before {
		background-size: 1.2rem;
	}

	.advantages-item:nth-child(4) h3::before {
		background-size: 1.2rem;
	}

	.advantages-item h3::after {
		top: 2.12rem;
		width: 1.2rem;
		height: 0.24rem;
	}

	.advantages-item p {
		font-size: 0.56rem;
		margin-top: 2.92rem;
	}

	/* *********************************************
                     course
   ***********************************************/
	.course {
		height: 17.86rem;
		background: url(../img/phone-bg-footer.png) center no-repeat;
		background-size: 15rem 17.86rem;
	}

	.course-list {
		flex-direction: column;
	}

	.course-list-item {
		width: 11.4rem;
		height: 3.7rem;
		margin: 0;
	}

	.course-list-item:nth-child(2) {
		margin: .4rem 0;
	}

	.course-list-item h3 {
		font-size: 0.64rem;
	}

	.course-list-item p {
		font-size: 0.56rem;
	}

	.course-btn {
		width: 11.4rem;
		height: 2.4rem;
		border-radius: 1.2rem;
		font-size: 0.56rem;
	}

	/* *********************************************
                     word
   ***********************************************/
	.word p {
		width: 13rem;
		font-size: 0.64rem;
	}

	.word p:nth-child(2) {
		margin-top: 0.8rem;
	}

	/* *********************************************
                     footer
	***********************************************/

	footer {
		height: 2.08rem !important;
	}

	.footer-right {
		display: flex;
		flex-direction: column;
		line-height: 0.72rem;
		font-size: 0.38rem;
	}

	.back-top {
		position: fixed;
		bottom: 1rem;
		right: 1rem;
	}

	.back-top img {
		width: 1.6rem;
		height: 1.6rem;
	}
}