.bg-home {
	position: relative;
	padding: 120px 0px 0px 0px;
	background-image: url("https://al-lecture-new-oss.oss-cn-hangzhou.aliyuncs.com/ah_website/images/index_bg.png");
	background-size: cover;
	background-repeat: no-repeat;
}

.bg-home .describe {
	width: 100%;
	text-align: center;
}

.describe-img {
	width: 996px;
	height: 552px;
}

.wing {
	width: 48px;
	height: 16px;
	margin: 0 16px;
}

.shape-inner-wrap {
	max-width: 1200px;
	margin: 0px auto 0;
	display: flex;
	align-items: center;
	background-color: #FFFFFF;
	padding-bottom: 120px;
}

.shape-inner-wrap .shape-step-wrap {
	box-sizing: border-box;
	flex-shrink: 0;
	width: 280px;
	height: 375px;
}

.shape-steps {
	position: relative;
	padding-left: 24px;
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	text-align: left;
}

.line {
	position: absolute;
	left: 0;
	top: 0;
	height: 100%;
	width: 2px;
	left: -24px;
	background: #ddd;
}

.section {
	/* position: relative; */
	width: 280px;
}

.section .active-line {
	position: absolute;
	left: -24px;
	top: 0;
	width: 2px;
	height: 75px;
	background: #336FFF;
}

.section .active-title,
.section:hover .title {
	color: #336FFF !important;
}

.section .title {
	font-size: 20px;
	line-height: 28px;
	color: #666;
	cursor: pointer;
}

.content {
	margin-top: 4px;
	font-size: 14px;
	line-height: 20px;
	color: #999;
}

.shape-inner-wrap .swiper-img {
	margin-left: 130px;
	max-width: 792px;
	box-shadow: 0 4px 20px 0 rgba(0, 0, 0, .12);
	border-radius: 16px;
}

.shape-sec {
	padding: 80px 0 60px;
	width: 100%;
	text-align: center;
}

.subTitle {
	margin-top: 16px;
	font-size: 16px;
	color: #999;
	line-height: 22px;
	font-weight: 400;
}

.shape-sec .title {
	display: flex;
	justify-content: center;
	align-items: center;
	color: #222;
	font-size: 40px;
	font-weight: 600;
	line-height: 56px;
}

.bg-home .describe .title {
	font-size: 56px;
	color: #222222;
	font-weight: 500;
	line-height: 1.4;
}

.bg-home .describe .subTitle {
	margin-top: 8px;
	color: #666666;
	font-size: 24px;
	line-height: 1.4;
}


.tool-sec {
	padding: 80px 0;
	background: #f6f6f6;
	width: 100%;
	text-align: center;
}

.tool-sec .title {
	display: flex;
	justify-content: center;
	align-items: center;
	color: #222;
	font-size: 40px;
	font-weight: 600;
	line-height: 56px;
}

.tool-sec .tool-content {
	max-width: 1200px;
	margin: 64px auto 0;
}

.tool-sec .tool-content .tool-card-wrap {
	display: flex;
	justify-content: space-between;
}

.tool-card {
	max-width: 384px;
	padding: 4px 4px 20px 4px;
	background: #fff;
	text-align: left;
	border-radius: 16px;
}

.tool-card .tool-card-img {
	display: block;
	width: 376px;
}

.tool-card .tool-card-title {
	margin: 20px 0 16px;
	padding-left: 20px;
	font-size: 22px;
	line-height: 30px;
	color: #336FFF;
}

.tool-card .tool-card-item {
	margin-bottom: 4px;
	font-size: 16px;
	color: #999;
	line-height: 22px;
}

.tool-card .tool-card-item::before {
	content: "";
	display: inline-block;
	margin: 0 8px 0 20px;
	width: 6px;
	height: 6px;
	border-radius: 6px;
	background: #999;
	transform: translateY(-3px);
}

.monitor-sec {
	padding: 80px 0 120px;
	text-align: center;
	width: 100%;
}

.monitor-sec .title {
	display: flex;
	justify-content: center;
	align-items: center;
	color: #222;
	font-size: 40px;
	font-weight: 600;
	line-height: 56px;
}

.subTitle {
	margin-top: 16px;
	font-size: 16px;
	color: #999;
	line-height: 22px;
	font-weight: 400;
}

.monitor-sec .monitor-img {
	margin-top: 64px;
	max-width: 988px;
	box-shadow: 0 4px 20px 0 rgba(0, 0, 0, .12);
	border-radius: 16px;
}

.platform-sec {
	padding: 80px 0 120px;
	background: #f6f6f6;
	text-align: center;
	width: 100%;
}

.platform-sec .title {
	display: flex;
	justify-content: center;
	align-items: center;
	color: #222;
	font-size: 40px;
	font-weight: 600;
	line-height: 56px;
}

.platform-sec .platform-img {
	margin-top: 64px;
	max-width: 1200px;
}

.down-sec {
	box-sizing: border-box;
	height: 480px;
	padding: 112px 0 105px;
	color: #fff;
	background-size: cover;
	background-image: url("https://al-lecture-new-oss.oss-cn-hangzhou.aliyuncs.com/ah_website/images/down-background.webp");
	text-align: center;
}

.down-sec .down-title {
	font-size: 56px;
	font-weight: 500;
	line-height: 78px;
	text-shadow: 0 3px 4px rgba(0, 0, 0, .2);
}

.down-sec .down-subTitle {
	margin: 16px 0 80px;
	font-size: 24px;
	line-height: 33px;
}

.down-btn {
	margin: 40px 0 45px 0;
	height: 56px;
	width: 180px;
	font-size: 20px;
	border-radius: 12px;
	border: none;
	color: #336FFF;
	background-color: #FFFFFF;
}
.down-btn:hover {
	background: #f0f9f9;
}


.down-img {
	width: 20px;
	height: 20px;
}