/* PUB:m52_1 back-to-top button */
.pub-topbtn{
	position: fixed;
	right: 16px;
	bottom: 84px; /* 하단 고정 메뉴 위로 살짝 */
	width: 44px;
	height: 44px;
	border-radius: 999px;
	border: none;
	background: rgba(15,23,42,.76);
	color: #fff;
	box-shadow: 0 10px 28px rgba(0,0,0,.28);
	display: none;
	align-items: center;
	justify-content: center;
	z-index: 1000;
	cursor: pointer;
}
.pub-topbtn:focus{ outline: 2px solid #60a5fa; outline-offset: 2px; }
.pub-topbtn.is-visible{ display: inline-flex; }
.pub-topbtn__icon{
	width: 18px;
	height: 18px;
	border-left: 3px solid #fff;
	border-top: 3px solid #fff;
	transform: rotate(45deg);
	margin-top: 4px;
}
@media (min-width: 768px){
	.pub-topbtn{ right: 24px; bottom: 96px; width: 48px; height: 48px; }
	.pub-topbtn__icon{ width: 20px; height: 20px; }
}