/* トップに戻るボタン */
#js-pageBtnGroup {
	position: fixed;
	z-index: 1000;
	bottom: 8rem;
	right: 0%;
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	font-size: clamp(1.125rem, calc(1.125rem + ((1vw - 3.6px) * 4.6875)), 3rem);
	border-radius: 0.5rem 0px 0px 0.5rem;
	/* .is-glassed（グラスモーフィズム） */
	-webkit-backdrop-filter: blur(4px) saturate(180%);
	backdrop-filter: blur(4px) saturate(180%) contrast(1);
	border: 1px solid hsla(224, 6%, 100%, 0.2);
	box-shadow: inset 0 1px 0 0 hsla(224, 6%, 100%, 0.15),
		0 4px 16px 0 hsla(224, 6%, 0%, 0.1);
	background: hsl(224, 45%, 85%, 0.75);
	transition: all 0.5s var(--ease-out-cubic, ease-out);
}

#js-pageBtnGroup::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: hsla(224, 6%, 100%, 1);
    background-image: radial-gradient(at 0% 0%, hsla(180, 100%, 98%, 1) 0px, transparent 50%),
		radial-gradient(at 29% 0%, hsla(189, 100%, 78%, 1) 0px, transparent 50%),
		radial-gradient(at 0% 48%, hsla(355, 0%, 100%, 1) 0px, transparent 50%),
		radial-gradient(at 100% 62%, hsla(340, 0%, 100%, 1) 0px, transparent 50%),
		radial-gradient(at 90% 98%, hsla(169, 88%, 83%, 1) 0px, transparent 50%),
		radial-gradient(at 26% 100%, hsla(240, 0%, 44%, 1) 0px, transparent 50%),
		radial-gradient(at 79% 0%, hsla(336, 0%, 51%, 1) 0px, transparent 50%);
		transition: all 0.5s var(--ease-out-cubic, ease-out);
		mix-blend-mode: color-dodge;
    opacity: 0.15;
}

#js-pageBtnGroup>.pageBtn {
	position: relative;
	z-index: 10;
	display: inline-flex;
	justify-content: center;
	align-items: center;
	width: 44px;
	height: 44px;
	max-width: calc(3.75vw - 1px);
	transition: all 0.5s var(--ease-out-cubic, ease-out);
	mix-blend-mode: difference;
	color: hsl(224, 6%, 50%);
	mix-blend-mode: difference;
}

#js-pageBtnGroup>.pageBtn:not(:first-of-type)::before {
	content: "";
	position: absolute;
	z-index: -1;
	top: 0;
	left: 0;
	right: 0;
	margin: auto;
	width: 0.5em;
	height: 4px;
	border-top: 1px solid hsla(224, 6%, 46%, 0.26);
}


/* .bubble */
#js-pageBtnGroup .pageBtn-bubble {
	position: absolute;
	right: calc(100% + 8px);
	display: inline-flex;
	justify-content: center;
	align-items: center;
	white-space: nowrap;
	margin-right: 8px;
	padding: 5px 11px;
	border-radius: 4px;
	letter-spacing: 0.04em;
	font-size: 13px;
	background-color: var(--c-dominant-700, hsl(224, 6%, 33%));
	color: #FFF;
	/* クリック無効 */
	pointer-events: none;
	cursor: none;
}

/* フェードイン */
#js-pageBtnGroup .pageBtn-bubble {
	/* trans: property | duration | easing */
	transition: all 0.3s var(--ease-out-cubic, ease-out);
	opacity: 0;
}

/* :hover */
@media (any-hover: hover) {
	#js-pageBtnGroup :is([href], [onclick]):hover {
		opacity: 1;
	}

	#js-pageBtnGroup a:is([href], [onclick]):hover .pageBtn-bubble {
		opacity: 1;
	}
}

#js-pageBtnGroup .pageBtn-bubble::after {
	content: "";
	position: absolute;
	top: 50%;
	right: 0;
	border-style: solid;
	border-width: 4px 0 4px 8px;
	border-color: transparent transparent transparent var(--c-dominant-700, hsl(224, 6%, 33%));
	translate: 100% -50%;
}


/* Icon（Material Symbols） */
#js-pageBtnGroup .icon {
	position: relative;
	display: inline-flex;
	justify-content: center;
	align-items: center;
	width: 0;
	height: 0;
	font-size: calc(var(--¾fem) * 1.33);
}

#js-pageBtnGroup .icon::before {
	position: relative;
	top: 1px;
	display: flex;
	justify-content: center;
	align-items: center;
	width: 0;
	height: 0;
	font-size: 100%;
	/* Material Symbols */
	font-family: 'Material Symbols Sharp';
	font-variation-settings:
		'FILL' 0,
		'wght' 300;
}

#js-pageBtnGroup .icon.ico-arrow_top::before {
	content: "\e25a";
}

#js-pageBtnGroup .icon.ico-arrow_up::before {
	content: "\e698";
}

#js-pageBtnGroup .icon.ico-arrow_down::before {
	content: "\e69b";
}

#js-pageBtnGroup .icon.ico-arrow_bottom::before {
	content: "\e258";
}




/* .is-rolleached
────────────── ༚༶⊰⟡⊱༶༚༺ */
#js-pageBtnGroup:not(.is-square).is-rolleached {
	background: transparent;
	-webkit-backdrop-filter: none;
	backdrop-filter: none;
	border: none;
	box-shadow: none;
}

#js-pageBtnGroup:not(.is-square).is-rolleached::after {
    opacity: 0;
}

#js-pageBtnGroup:not(.is-square).is-rolleached>:is(.pageBtn-up,
	.pageBtn-down,
	.pageBtn-bottom) {
	opacity: 0;
	pointer-events: none;
}

#js-pageBtnGroup:not(.is-square).is-rolleached>.pageBtn-top {
	filter: contrast(5);
}

#js-pageBtnGroup:not(.is-square).is-rolleached>.pageBtn-top::after {
	position: relative;
	top: 3.2em;
	display: flex;
	justify-content: center;
	align-items: center;
	width: 0;
	height: 0;
	-webkit-text-orientation: mixed;
	text-orientation: mixed;
	-webkit-font-feature-settings: "pkna";
	font-feature-settings: "pkna";
	-webkit-writing-mode: vertical-rl;
	-ms-writing-mode: tb-rl;
	writing-mode: vertical-rl;
	white-space: nowrap;
	content: "PAGE TOP";
}

#js-pageBtnGroup:not(.is-square).is-rolleached .icon.ico-arrow_top::before {
	content: "\e5d8";
	font-variation-settings: 'wght' 700;
	font-weight: 700;
}

#js-pageBtnGroup:not(.is-square).is-rolleached>.pageBtn-top::after {
	font-family: 'YakuHanJP', 'Poppins', 'Noto Sans JP', sans-serif;
	font-size: 1.3pc;
	font-variation-settings: 'wght' 700;
	font-weight: 700;
}

#js-pageBtnGroup:not(.is-square).is-rolleached .pageBtn-bubble {
	top: 1.6rem;
}



/* デバッグモード
────────────── ༚༶⊰⟡⊱༶༚༺ */
#js-pageBtnGroup:not(.is-debug)>:is(.pageBtn-up-1px,
	.pageBtn-down-1px) {
	display: none;
}

#js-pageBtnGroup .icon.ico-arrow_up_1px::before {
	content: "\e698";
	font-size: 65%;
}

#js-pageBtnGroup .icon.ico-arrow_down_1px::before {
	content: "\e69b";
	font-size: 65%;
}




/* .is-square
────────────── ༚༶⊰⟡⊱༶༚༺ */
#js-pageBtnGroup.is-square {
	border: 0;
	box-shadow: none;
}

#js-pageBtnGroup.is-square>.pageBtn {
	max-width: none;
}

#js-pageBtnGroup.is-square>.pageBtn-top {
	background: var(--c-secondary-550, hsl(224, 25%, 48%));
	color: #FFF;
	box-shadow: hsla(224, 6%, 0%, 0.35) 0px 5px 15px;
	mix-blend-mode: unset;
}

#js-pageBtnGroup.is-square .icon.ico-arrow_top::before {
	content: "\e698";
}