@charset "utf-8";

.first-img-box, .use-box{
	width: 100%;
	height: 60vh;
}

.first-img-box{
	background-image:url('https://cdn.fnwnet.cn/watt/home/img/home/first.jpg');
	background-size: 100% 100%;
	background-repeat:no-repeat;
}

.use-box{
	background: rgb(0,0,0,0.5);
}

.use{
	margin-left:20vw;
	margin-top:-10vh;
}

.use h1{
	font-size: 2.5rem;
	font-weight: normal;
	color: #fff;
}

.use p{
	font-size: 1.2rem;
	margin: 1em auto;
	color: #ddd;
}

.overview-box{
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 3rem;
}

.overview-box img{
	width: 100%;
}

.item-box{
	width: 100%;
}

.item{
	width: 70vw;
	min-width: 800px;
	margin: auto;
	padding: 6em 0;
}

.need-box{
	width:100px;
	text-align: center;
}

.need{
	display: grid;
	grid-template-columns: 1fr 1fr 1fr 1fr 1fr 1fr;
	gap: 1.5em;
	padding: 2em 0;
}

.need-item{
	padding: 1em 1.5em;
	background: #fff;
    box-shadow: 5px 5px 10px #ddd;
    border-radius: .4em;
    transition-duration: .3s;
}

.need-item:hover{
	transform: scale(1.05, 1.05);
}

.icon{
	width: 4rem;
	height: 4rem;
	background-image: url('https://cdn.fnwnet.cn/watt/home/img/home/need.png');
	margin:auto;
	background-size:cover;
}

.icon-01{
	background-position: 0 0;
}
.icon-02{
	background-position: -4rem 0;
}
.icon-03{
	background-position: -8rem 0;
}
.icon-04{
	background-position: -12rem 0;
}
.icon-05{
	background-position: -16rem 0;
}
.icon-06{
	background-position: -20rem 0;
}
.icon-07{
	background-position: -24rem 0;
}
.icon-08{
	background-position: -28rem 0;
}

.icon-09{
	background-position: -32rem 0;
}

.icon-10{
	background-position: -36rem 0;
}

.icon-11{
	background-position: -40rem 0;
}

.icon-12{
	background-position: -44rem 0;
}

.advantage-box{
	text-align: center;
}
.advantage{
	display: grid;
	grid-template-columns: 1fr 1fr;
	grid-template-rows: 1fr 1fr;
	gap: 1.5em;
	margin: 2em auto;
}

.advantage-item{
	background: #fff;
	box-shadow: 5px 5px 10px #ddd;
	text-align: left;
	padding: 1em;
	border-radius: .4em;
}

.advantage-item:hover{
	box-shadow: 5px 5px 20px #ddd;
}

.download-box{
	text-align: center;
}

.download{
	margin: 2em;
	padding: 2em;
	border:1px solid #ccc;
}

.down-img{
	width: 3rem;
}

.btn__download{
	border: 1px solid #eee;
	color: #333;
}

.down-desc{
	text-align: left;
}