* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
	/* 以下代码用于隐藏滚动条 */
	scrollbar-width: none;
	/* Firefox */
	-ms-overflow-style: none;
	/* 禁用div选中效果 */
	-webkit-user-select: none;
	/* Safari */
	-moz-user-select: none;
	/* Firefox */
	-ms-user-select: none;
	/* IE10+/Edge */
	user-select: none;
}

/* WebKit 和 Blink 浏览器（例如 Chrome、Safari 和 Opera） */
::-webkit-scrollbar {
	display: none;
}

body {
	background-color: black;
	color: white;
	padding-top: 3.75rem;
}

/* WebKit 和 Blink 浏览器（例如 Chrome、Safari 和 Opera） */
.scrollable-container::-webkit-scrollbar {
	display: none;
}

/* 头部样式 */
header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0.9375rem;
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	z-index: 99;
	background-color: black;
}

.logo {
	width: 3.125rem;
}

.menu {
	width: 1rem;
}

/*  底部通用样式 */
.bottom-content-bg {
	padding-top: 2.5rem;
	padding-bottom: 1.5rem;
}

.bc-link-bg {
	display: flex;
	justify-content: center;
	font-size: 0.75rem;
}

.bc-link-user {}

.bc-link-service {
	margin-left: 2rem;
}

.bc-social-bg {
	margin-top: 3.75rem;
	display: flex;
	justify-content: center;
}

.bc-social-bg>img {
	width: 1rem;
}

.bc-social-img-margin {
	margin-left: 2rem;
}

.wechat-image-bg {
	text-align: center;
	padding: 1.875rem 0rem;
}

.wechat-image {
	width: 6rem;
	height: 6rem;
}

.copyright {
	text-align: center;
	font-size: 0.75rem;
}

/*  底部通用样式 */

/* 隐藏导航菜单，初始状态 */
#nav-menu {
	display: none;
	position: fixed;
	top: 60px;
	left: 0;
	width: 100%;
	height: calc(100vh - 60px);
	background-color: black;
	z-index: 98;
	animation: slideDown 0.3s ease-out;
	line-height: 47px;
	text-align: center;
}

/* 导航菜单项样式 */
.nav-menu-item {
	font-size: 0.75rem;
	font-weight: bold;
	opacity: 0;
	transform: translateY(-40px);
	animation: itemSlideDown 0.3s ease-out forwards;
	animation-delay: calc(var(--item-index) * 0.05s);
}

.nav-menu-item img {
	opacity: 0;
	transform: translateY(-40px);
	animation: itemSlideDown 0.3s ease-out forwards;
	animation-delay: calc(var(--item-index) * 0.05s);
}

/* 从上方展开的动画 */
@keyframes slideDown {
	from {
		transform: translateY(calc(60px - 100%));
	}

	to {
		transform: translateY(0);
	}
}

/* 从上方收起的动画 */
@keyframes slideUp {
	from {
		transform: translateY(0);
	}

	to {
		transform: translateY(-100%);
	}
}

/* 导航菜单项向下展开动画 */
@keyframes itemSlideDown {
	from {
		opacity: 0;
		transform: translateY(-47x);
	}

	to {
		opacity: 1;
		transform: translateY(0);
	}
}

/* 导航菜单项向上收起动画 */
@keyframes itemSlideUp {
	from {
		opacity: 1;
		transform: translateY(0);
	}

	to {
		opacity: 0;
		transform: translateY(-47px);
	}
}

/* 菜单图标旋转动画 */
@keyframes rotateIcon {
	from {
		transform: rotate(0deg);
	}

	to {
		transform: rotate(180deg);
	}
}

/* 菜单图标反向旋转动画 */
@keyframes reverseRotateIcon {
	from {
		transform: rotate(180deg);
	}

	to {
		transform: rotate(0deg);
	}
}

.language-swiper {
	width: 60px;
	height: 47px;
	overflow: hidden;
}

.language-swiper-slide {
	width: 60px;
	height: 47px;
}

.language-left-img {
	width: 9px;
	height: 9px;
	margin-right: 1.875rem;
	margin-top: 0.0625rem;
}

.language-right-img {
	width: 9px;
	height: 9px;
	margin-left: 1.875rem;
	margin-top: 0.0625rem;
}