@font-face {
  /* 为字体指定一个名称，将在后面引用 */
  font-family: 'Akira';
  
  /* 字体文件路径 */
  src: url('./Optician-Sans.otf') format('opentype');
  
  /* 可选属性 */
  font-weight: normal;  /* 正常字重 */
  font-style: normal;   /* 正常样式 */
  font-display: swap;   /* 优化字体加载体验 */
}

:root {
	--businbox-color: #5ba7c8
}

* {
	padding: 0;
	margin: 0;
	outline: none;
	-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box
}

html {
	font-size: calc(100vw/19.2);
	-webkit-text-size-adjust: 100%;
	-ms-text-size-adjust: 100%;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale
}

@media (min-width: 1901px) {
	html {
		font-size: 100px
	}
}

@media (max-width: 1580px) {
	html {
		font-size: 66px
	}
}

@media (max-width: 567px) {
	html {
		font-size: calc(100vw/7.5)
	}
}

body {
	min-height: 100%;
	font-family: 'Akira', 'Microsoft YaHei', 'Microsoft YaHei UI', 'SimSun', 'SimHei', 'Arial';
	font-size: 16px;
	line-height: 1.5;
	color: #000000;
	background: #fff
}

@media (max-width: 1580px) {
	body {
		font-size: 14px
	}
}

@media (max-width: 767px) {
	body {
		font-size: .28rem
	}
}

img {
	border: 0;
	vertical-align: top
}



.container2 {
	margin: 0 auto;
	width: 86%;
	max-width: 100%;
}

@media (max-width: 1580px) {
	.container2 {
		width: 90%
	}
}

@media (max-width: 767px) {
	.container2 {
		width: 90%
	}
}

.font30 {
	font-size: .4rem;
}

@media (max-width: 1199px) {
	.font30 {
		font-size: .36rem
	}
}

@media (max-width: 767px) {
	.font30 {
		font-size: .4rem
	}
}

.font54 {
	font-size: .54rem
}

@media (max-width: 1199px) {
	.font54 {
		font-size: .5rem
	}
}

@media (max-width: 767px) {
	.font54 {
		font-size: .44rem
	}
}

@keyframes scalefe10 {
	from {
		opacity: .4;
		transform: translate(-50%, -50%) scale(.5)
	}

	to {
		transform: translate(-50%, -50%) scale(1.1);
		opacity: 0
	}
}

.abtbanner {
	position: relative
}

.abtbanner .bag {
	width: 100%;
	height: 100vh;
	background-color: #000000
}

.abtbanner .bag img {
	width: 100%;
	height: 100%;
	opacity: .5;
	object-fit: cover
}

.abtbanner .bag img:nth-child(2) {
	display: none
}

@media (max-width: 767px) {
	.abtbanner .bag img {
		display: none
	}

	.abtbanner .bag img:nth-child(2) {
		display: block
	}
}

.abtbanner .cont {
	position: absolute;
	top: 50%;
	left: 0;
	width: 100%;
	transform: translateY(-50%);
	z-index: 2;
	color: #ffffff;
	text-align: center
}

.abtbanner .cont .f_title {
	font-weight: bold;
	margin-bottom: 10px;
	text-align: left;
	font-size: 0.6rem;
}
.abtbanner .cont .wenzi{font-size: 1.5vw;text-align: left;letter-spacing: 2px;font-weight: bold;}
.abtbanner .cont .video_btn {
	width: .6rem;
	height: .6rem;
	background-color: rgb(33 150 243 / 65%);
	border: solid 1px #3689dd;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	user-select: none;
	-webkit-user-select: none;
	margin: 0 auto;
	position: relative
}

.abtbanner .cont .video_btn:before,
.abtbanner .cont .video_btn:after {
	content: '';
	display: block;
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	width: 200%;
	height: 200%;
	opacity: 0;
	pointer-events: none;
	border-radius: 50%;
	background-color: rgb(33 150 243 / 71%);
	border: solid 1px #2196F3;
	animation: scalefe10 2s linear infinite
}

.abtbanner .cont .video_btn:after {
	animation-delay: 1s
}

.abtbanner .cont .video_btn img {
	position: relative;
	z-index: 2;
	width: 25%;
	height: 25%;
	object-fit: contain
}

.abtbox-sec1 {
	position: relative
}










.duan_din1{position:relative;}
.duan_din1 img{width: 100%;}
.duan_din1 .din_di{position:absolute;top: 40%;color: #fff;padding: 50px;text-align: center;width: 100%;}
.duan_din1 .din_di h3{font-size: 3.5vw;font-weight: bold;margin-bottom: 0;}
.duan_din1 .din_di p{font-size: 1.2vw;font-weight: bold;}




.duan_din{position:relative;}
.duan_din img{width: 100%;}
.duan_din .din_di{position:absolute;top: 0;color: #fff;padding: 50px;text-align: center;width: 100%;}
.duan_din .din_di h3{font-size: 3.5vw;font-weight: bold;margin-bottom: 20px;}
.duan_din .din_di p{font-size: 1.2vw;font-weight: bold;}


.duan_din2{position:relative;}
.duan_din2 img{width: 100%;}
.duan_din2 .din_di{position:absolute;bottom: 0;color: #fff;padding: 5%10%;text-align: left;width: 100%;}
.duan_din2 .din_di h3{font-size: 7vw;font-weight: bold;margin-bottom: 0;line-height: 0.6;}
.duan_din2 .din_di p{font-size: 7vw;font-weight: bold;padding-left: 10%;line-height: 0.6;}



.duan_din3{position:relative;}
.duan_din3 img{width: 100%;}
.duan_din3 .din_di{position:absolute;top: 0;color: #fff;padding: 5%10%;text-align: center;width: 100%;}
.duan_din3 .din_di h3{font-size: 7vw;font-weight: bold;margin-bottom: 0;line-height: 0.6;}



.houyu{padding:50px 0;text-align: center;}
.houyu p{font-size: 1.2vw;}
.houyu h3{font-size: 4vw;margin: 20px 0;line-height: 1;}
.houyu div{font-size: 1vw;color: #999;}
.houyu a{font-size: 1vw;padding: 10px 30px;display: inline-block;margin-top: 30px;color: #fff;background: #000;border-radius: 60px;}

.houyu a:hover{background:#fff;color:#000;}


.zenw{padding:50px;background: #222;}
.zenw .kex{margin-bottom: 35px;color: #fff;}
.zenw .kex p{font-size: 1.2vw;}
.zenw .kex h3{font-size: 2vw;}

.kaib{padding: 30px;color: #fff;background: #000;}
.kaib img{max-width:100%;}
.kaib h3{font-size: 1.5vw;margin: 15px 0;}
.kaib p{font-size: 1vw;}
.jia_inde{display:flex;justify-content: flex-end;margin-top: 20px;}
.jia{width: 32px;height:32px;display: flex;justify-content: center;align-items: center;background: #fff;color: #000;font-size: 24px;border-radius: 60px;transition: all 0.6s;}

.kaib:hover .jia {
 background:#000;
 color:#fff;
    transform: rotate(360deg);
}
.fenli{display: flex;justify-content: space-between;}
.right_kos{margin:0;width: 7%;position: relative;}


.right_kos .swiper-button-next, .right_kos .swiper-button-prev {
    position: absolute;
    top: 50%;
    width: 32px;
    height: 32px;
    margin-top: -22px;
    z-index: 10;
    cursor: pointer;
    background-size: 32px 32px;
    background-position: center;
    background-repeat: no-repeat;
}

.right_kos .swiper-button-prev, .right_kos .swiper-container-rtl .swiper-button-next {
    background-image: url(../images/lefts.png);
    left: 10px;
    right: auto;
}

.right_kos .swiper-button-next, .right_kos .swiper-container-rtl .swiper-button-prev {
    background-image: url(../images/rights.png);
    right: 10px;
    left: auto;
}
@media (max-width: 767px) {
	.abtbox-sec1 {
		padding: 1.2rem 5%
	}
}

.abtbox-sec1 .img {
	width: 100%;
	/* height: 100vh; */
	/* background-color: #000000; */
	/* max-height: 970px; */
}

@media (max-width: 991px) {
	.abtbox-sec1 .img {
		height: 9.7rem
	}
}

.abtbox-sec1 .img img {
	opacity: 1;
	width: 100%;
	height: 100%;
	object-fit: cover
}

.abtbox-sec1 .abtbox1_cont {
	width: 100%
}

@media (max-width: 767px) {
	.abtbox-sec1 .abtbox1_cont {
		display: none
	}
}

.abtbox-sec1 .cont {
	display: flex;
	flex-wrap: wrap
}

@media (min-width: 768px) {
	.abtbox-sec1 .cont {
		/* position: absolute; */
		/* top: 0; */
		/* left: 0; */
		/* width: 100%; */
		/* height: 100%; */
		/* z-index: 2; */
	}

	.abtbox-sec1 .cont .item {
		height: 100%;
	}

	.abtbox-sec1 .cont .item .list {
		height: 100%
	}
}

@media (max-width: 767px) {
	.abtbox-sec1 .cont {
		width: 100%
	}
}

.abtbox-sec1 .cont .item {
	width: 25%;
	overflow: hidden;
	transition: all .4s;
	border-right: 1px solid rgba(255, 255, 255, 0.1)
}

@media (max-width: 767px) {
	.abtbox-sec1 .cont .item {
		width: 100%;
		background-color: #f8f8f8
	}
}

.abtbox-sec1 .cont .item .list {
	width: 100%;
	display: block;
	position: relative;
	/* padding: 6.1rem .56rem .46rem; */
	transition: all .4s
}

@media (max-width: 991px) {
	.abtbox-sec1 .cont .item .list {
		padding-top: 5rem
	}
}

@media (max-width: 767px) {
	.abtbox-sec1 .cont .item .list {
		padding-top: 2rem
	}
}

.abtbox-sec1 .cont .item .list .img {
	/* position: absolute; */
	/* left: 0; */
	/* top: 0; */
	/* height: 100%; */
}

@media (min-width: 768px) {
	.abtbox-sec1 .cont .item .list .img {
		/* display: none; */
	}
}

@media (max-width: 767px) {
	.abtbox-sec1 .cont .item .list .img {
		display: none
	}
}

.abtbox-sec1 .cont .item .list .font {
	color: #ffffff;
	text-align: center;
	position: absolute;
	top: 41%;
	padding: 10px;
	z-index: 9;
	transform: translateY(-50%);
	width: 100%;
}

@media (max-width: 767px) {
	.abtbox-sec1 .cont .item .list .font {
		color: #333333
	}
}

.abtbox-sec1 .cont .item .list .font .f_tit {
	margin-bottom: .145rem;
	font-weight: bold;
	letter-spacing: 3px;
	text-align: center;
	margin: 0;
	line-height: 1.2;
	font-size: 0.48rem;
}

.abtbox-sec1 .cont .item .list .font .text {
	text-align: justify;
	opacity: 0;
	transition: all .4s linear;
	padding: 0 10px;
	display: -webkit-box;
	-webkit-box-orient: vertical;
	-webkit-line-clamp: 3; /* 设置显示的最大行数为3 */
	overflow: hidden;
}

@media (max-width: 767px) {
	.abtbox-sec1 .cont .item .list .font .text {
		color: #666666
	}
}

@media (min-width: 768px) {
	.abtbox-sec1 .cont .item:hover {
		background-color: rgba(91, 167, 200, 0.5);
		border-color: transparent
	}

	.abtbox-sec1 .cont .item:hover .list {
		/* padding-top: 3.7rem; */
	}

	.abtbox-sec1 .cont .item:hover .list .font .text {
		opacity: .7
	}
}

@media (min-width: 768px) and (max-width: 991px) {
	.abtbox-sec1 .cont .item:hover .list {
		padding-top: 1rem
	}
}

@media (max-width: 767px) {
	.abtbox-sec1 .cont {
		margin: 0 -0.16rem
	}

	.abtbox-sec1 .cont .item {
		padding: 0 .16rem;
		margin-bottom: .32rem;
		width: 100%
	}

	.abtbox-sec1 .cont .item .list {
		padding: .4rem .32rem
	}

	.abtbox-sec1 .cont .item .list .font {
		position: relative;
		z-index: 2
	}

	.abtbox-sec1 .cont .item .list .font .text {
		opacity: .7
	}
}