* {
	font-size: 20px;
	margin: 0;
	padding: 0;
}

body,
html {
	margin: 0;
	padding: 0;
}

img {
	display: block;
}

.index {
	width: 1920rem;
	height: 1080rem;
	background-image: url("../images/bg.jpg");
	background-size: 1920rem 1080rem;
	position: relative;
}

.index-top {
	width: 100%;
	height: 56rem;
	position: absolute;
	left: 0%;
	top: 0;
	background-color: rgba(0, 144, 255, .72);
	display: flex;
	align-items: center;
	justify-content: center;
	animation: 0.5s linear index-top;
}

@keyframes index-top {
	0% {
		top: -57rem;

	}

	100% {
		top: 0;
	}
}

.index-nav {
	width: 1228rem;

	display: flex;
	align-items: center;
	justify-content: space-between;
}

.index-nav div img {
	width: 511rem;
	/* height: 22rem; */
}

.index-nav-a {
	width: 175rem;
	height: 28rem;
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.index-nav-a a {
	color: #fff;
	font-size: 16rem;
	text-decoration: cadetblue;
	font-weight: 300;
}
.index-nav-a a:hover {
	font-weight: bold;
}

.index-title-a {
	width: 445rem;
	position: absolute;
	left: 50%;
	margin-left: -222.5rem;
	top: 129rem;
	animation: 0.8s linear index-title-a;
}

@keyframes index-title-a {
	0% {
		top: 100rem;
		opacity: 0;

	}

	100% {
		top: 129rem;
		opacity: 1;
	}
}

.index-title-a img {
	width: 100%;
}

.index-title-b {
	width: 796rem;
	position: absolute;
	left: 50%;
	margin-left: -405rem;
	top: 220rem;
	animation: 0.8s linear index-title-b;
}

@keyframes index-title-b {
	0% {
		top: 100rem;
		opacity: 0;

	}

	100% {
		top: 220rem;
		opacity: 1;
	}
}

.index-title-b img {
	width: 100%;
}

.index-title-c {
	width: 520rem;
	position: absolute;
	left: 50%;
	margin-left: -260rem;
	top: 338rem;
	display: flex;
	align-items: center;
	justify-content: space-between;
	animation: 1.3s linear index-title-c;
}
.index-title-c img{
transition: transform 0.3s ease; /* 平滑过渡效果 */
}

.index-title-c img:hover{
	transform: scale(1.1); /* 放大1.1倍，可调整数值 */
}

@keyframes index-title-c {
	0% {
		opacity: 0;

	}

	60% {
		opacity: 0;

	}

	100% {
		opacity: 1;
	}
}


.index-title-c img {
	width: 214.6rem;
	height: 47.08rem;
}

.index-icon {
	position: absolute;
}

.index-icon img {
	width: 100%;
}

.icon-a {
	width: 218rem;
	left: 50%;
	top: 466rem;
	margin-left: -109rem;
	animation: icon-a 2s infinite;
}

@keyframes icon-a {
	0% {
		transform: rotate(0deg);
		opacity: 1;
	}

	100% {
		transform: rotate(360deg);
			opacity: 1;
	}
}

.icon-i-img {
	width: 246rem;
}

.icon-b {
	left: 111rem;
	top: 521rem;
	animation: 1.6s linear icon-j;
}

.icon-c {
	left: 351rem;
	top: 625rem;
	animation: 1.9s linear icon-j;
}

.icon-d {
	left: 690rem;
	top: 657rem;
	animation: 2.2s linear icon-j;
}

.icon-e {
	left: 979rem;
	top: 677rem;
	animation: 2.5s linear icon-j;
}

.icon-f {
	left: 1319rem;
	top: 637rem;
	animation: 2.8s linear icon-j;
}

.icon-j {
	left: 1559rem;
	top: 525rem;
	animation: 3.1s linear icon-j;
}

@keyframes icon-j {
	0% {
		opacity: 0;
	}

	100% {
		opacity: 1;
	}
}