/*ルビ調整
----------------------------------*/
rt {
	display: none;
}

ruby.custom_ruby{
	line-height: 1em;
	height: 1em;
	text-align: center;
	transform-origin: bottom center;
	bottom: calc(1em + 4px);
	white-space: nowrap;
	display: inline-block;
}

ruby.custom_ruby_rl{
	line-height: 1em;
	text-align: center;
	transform-origin: center left;
	left: 1em;
	writing-mode: vertical-rl;
	-webkit-writing-mode: vertical-rl;
	width: 1em;
	white-space: nowrap;
	display: inline-block;
}