div,ul,li{
	list-style: none;
}
.page-head{
	width: 100%;
	height: 80px; 
	background-color: rgb(255, 255, 255);
}
.page-head.scrolled{
	transition: all 0.3s ease;
	width: 100%;
	position: fixed; /* 或者 absolute，取决于你的布局需求 */
	top: 0;
	z-index: 1000;
	box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}
.page-head-main{
	width: 1200px;
	margin: auto;
	display: flex;
	flex-flow: row nowrap;
	justify-content: space-between;
	align-items: center;
	height: 100%;
}
.page-head-main-logo{
	width:40%;
	height: 32px;
	display: flex;
	flex-flow: row nowrap;
	justify-content: flex-start;
	align-items: center;
}
.page-head-main-nav{
	display: flex;
	flex-flow: row nowrap;
	justify-content: flex-start;
	align-items: center;
	flex: 1;
	height: 100%;
}
.page-head-main-nav li{
	display: flex;
	flex-flow: row nowrap;
	justify-content:center;
	align-items: center;
	padding: 0 12px;
	margin: 0 12px;
	color: #4E5969;
	height: 58px;
	font-weight: 400;
}
.page-head-main-nav li.active{
	color: #FF2542;
	position: relative;
	font-weight: 500;
}
.page-head-main-nav li.active::after{
	content: '';
	width: 28px;
	height: 3px;
	background-color: #FF2542 ;
	position: absolute;
	bottom: 0;
	left: 50%;
	transform: translateX(-50%);
}

.page-content{
	width: 100%;
	display: flex;
	flex-flow: column nowrap;
	justify-content: flex-start;
	align-items: center;
}

.banner-box{
	width: 100%;
	background-image: url(../image/banner.png);
	background-position: top center;
	background-size: 100% auto;
	background-repeat: no-repeat;
	background-color: green;
	aspect-ratio: 72 / 41; /* 宽高比为16:9 */
}
.banner-box-main{
	width: 1200px;
	height: 100%;
	margin: auto;
	display: flex;
	flex-flow: column nowrap;
	justify-content: flex-start;
	align-items: flex-start;
}
.banner-box-main .font-box{
	/* margin-top: 140px; */
	margin-top: calc(100vw * 14 / 144);
}
.banner-box-main .down-btn{
	display: flex;
	flex-flow: row nowrap;
	justify-content: flex-start;
	align-items: center;
	margin-top: 48px;
	
}
.banner-box-main .down-btn>img:nth-child(2){
	margin-left: 24px;
	
}

.product-box{
	width: 100%;
	display: flex;
	flex-flow: column nowrap;
	justify-content: flex-start;
	align-items: center;
}
.product-box .one-box{
	width: 1200px;
	height: 928px;
	display: flex;
	flex-flow: row nowrap;
	justify-content: space-between;
	align-items: center;
}
.product-box .one-box .img-box{
	width: 714px;
	/* width: 528px; */
	height: 728px;
}
.product-box .one-box .font-box{
	width: 461px;
	flex: 1;
}
.product-box .one-box .font-box .title-box{
	font-weight: 500;
	font-size: 56px;
	text-align: left;
	color: #000000;
}
.product-box .one-box .font-box .title-box>em{
	color: #FF2542;
	font-style: normal;
}
.product-box .one-box .font-box .desc-box{
	text-align: left;
	font-size: 36px;
	color: #1D2129;
}
.product-box .two-box{
	width: 1200px;
	height: 950px;
	display: flex;
	flex-flow: row nowrap;
	justify-content: space-between;
	align-items: center;
}
.product-box .two-box .font-box .title-box{
	font-weight: 500;
	font-size: 56px;
	text-align: left;
	color: #000000;
}
.product-box .two-box .font-box .title-box>em{
	color: #FF2542;
	font-style: normal;
}
.product-box .two-box .font-box .desc-box{
	text-align: left;
	font-size: 36px;
	color: #1D2129;
}
.product-box .three-box{
	width: 100%;
	height: 836px;
	/* aspect-ratio: 360 / 209; */ /* 宽高比为16:9 */
	background-image: url(../image/product-three-bg.png);
	background-position: top center;
	background-size: auto 100%;
	background-repeat: no-repeat;
	background-color: #FCFEFD;
}
.product-box .three-box .three-box-body{
	width: 1200px;
	height: 836px;
	margin: auto;
	display: flex;
	flex-flow: row nowrap;
	justify-content: space-between;
	align-items: center;
}
.product-box .three-box .three-box-body .img-box{
	width: 714px;
	height: 836px;
}

.product-box .three-box .three-box-body .font-box .title-box{
	font-weight: 500;
	font-size: 56px;
	text-align: left;
	color: #000000;
}
.product-box .three-box .three-box-body .font-box .title-box>em{
	color: #FF2542;
	font-style: normal;
}
.product-box .three-box .three-box-body .font-box .desc-box{
	text-align: left;
	font-size: 36px;
	color: #1D2129;
}

.product-box .four-box{
	width: 100%;
	height: 1044px;
	display: flex;
	flex-flow: column nowrap;
	justify-content: center;
	align-items: center;
}
.product-box .four-box .img-box{
	margin-top: 80px;
/* 	width: 714px;
	height: 836px; */
}

.product-box .four-box .font-box .title-box{
	font-weight: 500;
	font-size: 56px;
	text-align: left;
	color: #000000;
}
.product-box .four-box .font-box .title-box>em{
	color: #FF2542;
	font-style: normal;
}
.product-box .four-box .font-box .desc-box{
	text-align: center;
	font-size: 36px;
	color: #1D2129;
	margin-top: 36px;
}

.footer-box{
	width: 100%;
	height: 308px;
	background-color: #D50C27;
}
.footer-box-body{
	width: 1200px;
	margin: auto;
}
.contacts-body{
	height: 188px;
	display: flex;
	flex-flow: row nowrap;
	justify-content: space-between;
	align-items: center;
	border-bottom: 0.5px solid rgba(242, 243, 245, 0.5);
}
.contacts-body-left{
	width: 508px;
}
.contacts-body-left,.contacts-body-right{
	font-size: 24px;
	color: #FFFFFF;
	text-align: left;
}
.contacts-body-left .title-box,.contacts-body-right .title-box{
	font-size: 18px;
	margin-bottom: 16px;
}
.copyright{
	margin-top: 38px;
	font-size: 12px;
	color: #FFFFFF;
}