/*トピックスメニュー*/
body.topics_top nav.topics_menu a:nth-child(1),
body.topics_world nav.topics_menu a:nth-child(2),
body.topics_latex nav.topics_menu a:nth-child(3),
body.topics_release nav.topics_menu a:nth-child(4) {
	background: var(--l_gray2);
	pointer-events: none;
}


nav.topics_menu {
	display: flex;
	justify-content: center;
	align-items: center;
	position: sticky;
	aspect-ratio: 3 / 2;
	width: 100%;
	background: var(--l_blue3);
}

nav.topics_menu > div {
	display: flex;
	flex-wrap: wrap;
	justify-content: space-around;
	width: var(--sp_width);
	max-width: var(--max_width);
	margin: 0 auto;
}


nav.topics_menu a {
	display: block;
	position: relative;
	width: calc(25% - 20px);
	padding: 5px;
	border-radius: 10px;
	background: #fff;
	transform: translateY(0px);
	transition-duration: 2s;
	transition-timing-function: ease-out;
}

nav.topics_menu a:hover {
	transform: translateY(-40px);
	transition-duration: 1s;
	transition-timing-function: ease-out;
}

nav.topics_menu img {
	border-radius: 5px;
}


nav.topics_menu h3 {
	display: block;
	position: relative;
	width: 100%;
	padding: 15px 10px
}


nav.topics_menu h3::after {
	content: '';
	position: absolute;
	width: 10px;
	height: 10px;
	top: 50%;
	right: 10px;
	margin-top: -5px;
	border: solid var(--gray2);
	border-width: 3px 3px 0 0;
	transform: rotate(45deg);
}

@media only screen and (max-width: 1050px) {
	nav.topics_menu > div {
		display: block;
		max-width: 600px;
		margin: 0 auto;
		padding: 50px 0;
	}

	nav.topics_menu a {
		display: flex;
		align-items: center;
		width: 100%;
		transform: translateY(0px);
		transition-duration: 0s;
		transition-timing-function: none;
		margin: 10px 0;
	}

	nav.topics_menu a:hover {
		transform: translateY(0px);
		transition-duration: 0s;
		transition-timing-function: none;
	}

	nav.topics_menu img {
		width: 200px
	}

	nav.topics_menu h3 {
		padding: 0 20px
	}

	nav.topics_menu h3::after {
		right: 20px;
	}

	nav.topics_menu {
		aspect-ratio: auto;
	}


}

@media only screen and (max-width: 800px) {
	nav.topics_menu > div {}

	nav.topics_menu a {
		display: flex;
		align-items: center;
		width: 100%;
		transform: translateY(0px);
		transition-duration: 0s;
		transition-timing-function: none;
		margin: 10px 0;
	}

	nav.topics_menu a:hover {
		transform: translateY(0px);
		transition-duration: 0s;
		transition-timing-function: none;
	}

	nav.topics_menu h3 {
		padding: 0 10px
	}

	nav.topics_menu h3::after {
		right: 10px;
	}

	nav.topics_menu img {
		width: 140px
	}


	nav.topics_menu {
		aspect-ratio: auto;
	}


}