/* local scroll-to-top (CDN fireq.ru unavailable) */
.to_up_button {
	position: fixed;
	right: 20px;
	bottom: 20px;
	z-index: 10050;
	display: none;
	align-items: center;
	justify-content: center;
	width: 44px;
	height: 44px;
	margin: 0;
	padding: 0;
	border: none;
	border-radius: 50%;
	background: #ff2241;
	color: #fff;
	cursor: pointer;
	box-shadow: 0 2px 10px rgba(0, 0, 0, 0.25);
	opacity: 0.9;
	transition: opacity 0.2s ease, transform 0.2s ease, background 0.2s ease;
}
.to_up_button.is-visible {
	display: flex;
}
.to_up_button:hover {
	opacity: 1;
	transform: translateY(-2px);
}
.to_up_button svg {
	display: block;
	width: 22px;
	height: 22px;
	fill: currentColor;
	color: #fff;
}
.to_up_button use {
	fill: currentColor;
}