.tfs-anchor {
	scroll-margin-top: var(--tfs-scroll-offset, 0px);
}

.tfs {
	--tfs-screen-inset: 16px;
	--tfs-column-step: 28px;
	--tfs-text-offset: 16px;
	--tfs-dot-offset: 1px;
	--tfs-dot-size: 10px;
	--tfs-dot-top: calc(50% - var(--tfs-dot-size) / 2 + var(--tfs-dot-shift, 0px));
	--tfs-rail-width: 2px;
	--tfs-rail-gap: 4px;
	--tfs-rail-offset: calc(var(--tfs-dot-offset) + (var(--tfs-dot-size) - var(--tfs-rail-width)) / 2);
	--tfs-font-size: 14px;
	--tfs-surface: Canvas;
	--tfs-on-accent: #ffffff;
	--tfs-text: currentColor;
	--tfs-text-active: CanvasText;
	--tfs-rail: var(--sgb-pastel-color, color-mix(in srgb, currentColor 30%, transparent));
	--tfs-accent: var(--sgb-main-color, #3ea8ff);
	--tfs-shadow: 0 8px 30px color-mix(in srgb, CanvasText 14%, transparent);
	font-size: var(--tfs-font-size);
	line-height: 1.6;
}

.tfs__list {
	margin: 0;
	padding: 0;
	list-style: none;
}

.tfs__item {
	position: relative;
	margin: 0;
	list-style: none;
}

.tfs__item--h2 {
	padding-inline-start: var(--tfs-text-offset);
}

.tfs__item--h3 {
	padding-inline-start: calc(var(--tfs-text-offset) + var(--tfs-column-step));
}

.tfs__item--h4 {
	padding-inline-start: calc(var(--tfs-text-offset) + var(--tfs-column-step) * 2);
}

.tfs__rail {
	position: absolute;
	border-inline-start: var(--tfs-rail-width) solid var(--tfs-rail);
}

.tfs__rail--column-0 {
	inset-inline-start: var(--tfs-rail-offset);
}

.tfs__rail--column-1 {
	inset-inline-start: calc(var(--tfs-rail-offset) + var(--tfs-column-step));
}

.tfs__rail--column-2 {
	inset-inline-start: calc(var(--tfs-rail-offset) + var(--tfs-column-step) * 2);
}

.tfs__rail--above {
	top: 0;
	height: calc(var(--tfs-dot-top) - var(--tfs-rail-gap));
}

.tfs__rail--below {
	top: calc(var(--tfs-dot-top) + var(--tfs-dot-size) + var(--tfs-rail-gap));
	bottom: 0;
}

.tfs__rail--through {
	top: 0;
	bottom: 0;
}

.tfs__item::after {
	content: "";
	position: absolute;
	top: var(--tfs-dot-top);
	width: var(--tfs-dot-size);
	height: var(--tfs-dot-size);
	background: var(--tfs-rail);
	border-radius: 50%;
	transition: background 0.2s ease, transform 0.2s ease;
}

.tfs__item--h2::after {
	inset-inline-start: var(--tfs-dot-offset);
}

.tfs__item--h3::after {
	inset-inline-start: calc(var(--tfs-dot-offset) + var(--tfs-column-step));
}

.tfs__item--h4::after {
	inset-inline-start: calc(var(--tfs-dot-offset) + var(--tfs-column-step) * 2);
}

.tfs__item.is-active::after {
	background: var(--tfs-accent);
	transform: scale(1.15);
}

.tfs__link {
	display: inline-block;
	max-width: 100%;
	padding: 6px 0;
	overflow: hidden;
	vertical-align: top;
	font-size: var(--tfs-font-size);
	white-space: nowrap;
	text-overflow: ellipsis;
	color: var(--tfs-text);
	text-decoration: none;
	border-radius: 6px;
	transition: color 0.2s ease;
}

.tfs__link:hover {
	color: var(--tfs-text-active);
}

.tfs__link:focus-visible {
	outline: 2px solid var(--tfs-accent);
	outline-offset: 2px;
}

.tfs__item.is-active .tfs__link {
	font-weight: 700;
	color: var(--tfs-text-active);
}

.tfs--widget .tfs__panel {
	max-height: min(70vh, 640px);
	overflow-y: auto;
	overscroll-behavior: contain;
}

.tfs--floating {
	position: fixed;
	inset-inline-start: var(--tfs-screen-inset);
	bottom: var(--tfs-screen-inset);
	z-index: 9999;
}

.tfs__toggle,
.tfs--to-top {
	color: var(--tfs-on-accent);
	background: var(--tfs-accent);
	border: 0;
	box-shadow: var(--tfs-shadow);
	cursor: pointer;
}

.tfs--floating .tfs__toggle {
	display: inline-flex;
	align-items: center;
	padding: 11px 20px;
	font-size: var(--tfs-font-size);
	font-weight: 700;
	border-radius: 999px;
}

.tfs--floating .tfs__panel {
	position: absolute;
	inset-inline-start: 0;
	bottom: calc(100% + 10px);
	width: min(78vw, 320px);
	max-height: min(62vh, 480px);
	padding: 18px 18px 14px;
	overflow-y: auto;
	overscroll-behavior: contain;
	background: var(--tfs-surface);
	border-radius: 12px;
	box-shadow: var(--tfs-shadow);
	opacity: 0;
	visibility: hidden;
	transform: translateY(8px);
	transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
}

.tfs--floating.is-open .tfs__panel {
	opacity: 1;
	visibility: visible;
	transform: none;
}

.tfs--to-top {
	position: fixed;
	inset-inline-end: var(--tfs-screen-inset);
	bottom: var(--tfs-screen-inset);
	z-index: 9999;
	display: flex;
	align-items: center;
	justify-content: center;
	width: 48px;
	height: 48px;
	border-radius: 50%;
}

.tfs--to-top:focus-visible {
	outline: 2px solid var(--tfs-accent);
	outline-offset: 3px;
}

.tfs__icon {
	width: 22px;
	height: 22px;
}

@media (prefers-reduced-motion: reduce) {
	.tfs__panel,
	.tfs__item::after,
	.tfs__link {
		transition: none;
	}
}