body {
	background-color: #131316;
	color: #ffffff;
	padding: 0;
	margin: 0;
}

section {
	display: grid;
	place-items: center;
	align-content: center;
	min-height: 100vh;
}

.hidden {
	opacity: 0;
	filter: blur(5px);
	transform: translateX(-100%);
	transition: all 1s;
}

.show {
	opacity: 1;
	filter: blur(0);
	transform: translateX(0);
}

.logo img {
	width: 20vw;
	max-width: 200px;
	height: auto;
}

.logos {
	display: flex;
}

.logo:nth-child(2) {
	transition-delay: 200ms;
}

.logo:nth-child(3) {
	transition-delay: 400ms;
}

.logo:nth-child(4) {
	transition-delay: 600ms;
}
#topImage {
	position: fixed;
	top: 20px;
	left: 50%;
	transform: translateX(-50%);
	width: 200px;
	max-width: 80vw;
	height: auto;
	transform-origin: top left;
	transition: transform 0.3s ease-out;
	z-index: 999;
	border-radius: 12px;
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
	}
	
	/* 传说中的三端适配 */
	@media (max-width: 768px) {
		#topImage {
			width: 140px;
		}
	}