@charset "UTF-8";

:root {
	--color-main: #dc2626;
	--color-sub: #fef2f2;
	--color-accent: #ea580c;
	--color-text: #1c1917;
	--color-border: #fecaca;
	--kf-column-muted: #57534e;
	--kf-column-surface: #fff;
	--kf-column-warning-bg: #fff7ed;
	--kf-column-code: #1c1917;
	--kf-column-radius: 8px;
	--kf-column-shadow: 0 12px 30px rgba(127, 29, 29, 0.08);
	--kf-font-heading: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
	--kf-font-body: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
	--kf-font-number: Roboto, Arial, sans-serif;
}

.kf-article__content {
	color: var(--color-text);
	font-family: var(--kf-font-body);
	font-size: 1rem;
	line-height: 1.95;
}

.kf-article__content > * + * {
	margin-top: 1.35em;
}

.kf-article__content h2,
.kf-article__content h3,
.kf-article__content h4 {
	color: var(--color-text);
	font-family: var(--kf-font-heading);
	font-weight: 800;
	line-height: 1.5;
	scroll-margin-top: 96px;
}

.kf-article__content h2 {
	border-left: 7px solid var(--color-main);
	font-size: clamp(1.45rem, 5vw, 1.9rem);
	margin: 3.2rem 0 1.4rem;
	padding: 0.5rem 0 0.5rem 0.9rem;
}

.kf-article__content h3 {
	border-bottom: 3px solid var(--color-border);
	font-size: clamp(1.2rem, 4vw, 1.45rem);
	margin: 2.5rem 0 1.15rem;
	padding-bottom: 0.55rem;
	position: relative;
}

.kf-article__content h3::after {
	background: var(--color-main);
	bottom: -3px;
	content: "";
	height: 3px;
	left: 0;
	position: absolute;
	width: 72px;
}

.kf-article__content h4 {
	font-size: 1.08rem;
	margin: 2rem 0 0.9rem;
	padding-left: 1.05rem;
	position: relative;
}

.kf-article__content h4::before {
	background: var(--color-main);
	border-radius: 50%;
	content: "";
	height: 0.55rem;
	left: 0;
	position: absolute;
	top: 0.55em;
	width: 0.55rem;
}

.kf-article__content strong {
	color: var(--color-main);
	font-weight: 800;
}

.kf-article__content em {
	background: linear-gradient(transparent 58%, rgba(234, 88, 12, 0.24) 58%);
	color: var(--color-text);
	font-style: normal;
	padding-inline: 0.08em;
}

.kf-article__content a:not([class]) {
	color: var(--color-accent);
	font-weight: 700;
	text-decoration: none;
	text-underline-offset: 0.18em;
}

.kf-article__content a:not([class]):hover {
	text-decoration: underline;
}

.kf-article__content blockquote {
	background: var(--color-sub);
	border-left: 6px solid var(--color-main);
	color: var(--kf-column-muted);
	font-style: italic;
	margin: 2rem 0;
	padding: 1.2rem 1.35rem;
}

.kf-article__content blockquote > :first-child {
	margin-top: 0;
}

.kf-article__content blockquote > :last-child {
	margin-bottom: 0;
}

.kf-article__content ol:not([class]),
.kf-article__content ul:not([class]) {
	padding-left: 1.55rem;
}

.kf-article__content ol:not([class]) li,
.kf-article__content ul:not([class]) li {
	margin-block: 0.45rem;
	padding-left: 0.25rem;
}

.kf-article__content ol:not([class]) li::marker {
	color: var(--color-main);
	font-family: var(--kf-font-number);
	font-weight: 900;
}

.kf-article__content ul:not([class]) li::marker {
	color: var(--color-main);
}

.kf-article__content pre {
	background: var(--kf-column-code);
	border-radius: var(--kf-column-radius);
	color: #fafaf9;
	font-family: Consolas, "Courier New", monospace;
	font-size: 0.88rem;
	line-height: 1.7;
	overflow-x: auto;
	padding: 1.15rem 1.25rem;
	tab-size: 4;
}

.kf-article__content code {
	background: #f5f5f4;
	border-radius: 4px;
	color: #9a3412;
	font-family: Consolas, "Courier New", monospace;
	font-size: 0.9em;
	padding: 0.15em 0.38em;
}

.kf-article__content pre code {
	background: transparent;
	color: inherit;
	padding: 0;
}

.kf-article__content figure {
	margin: 2rem 0;
}

.kf-article__content figure img {
	border-radius: var(--kf-column-radius);
	height: auto;
	max-width: 100%;
}

.kf-article__content figcaption {
	color: var(--kf-column-muted);
	font-size: 0.82rem;
	margin-top: 0.55rem;
	text-align: center;
}

.kf-toc {
	background: var(--color-sub);
	border: 1px solid var(--color-border);
	border-radius: var(--kf-column-radius);
	box-shadow: var(--kf-column-shadow);
	margin: 2.2rem 0;
	padding: 1.25rem;
}

.kf-toc__toggle {
	align-items: center;
	background: transparent;
	border: 0;
	color: var(--color-text);
	cursor: pointer;
	display: flex;
	font-family: var(--kf-font-heading);
	font-size: 1.08rem;
	font-weight: 800;
	justify-content: space-between;
	padding: 0;
	width: 100%;
}

.kf-toc__title {
	align-items: center;
	display: flex;
	font-family: var(--kf-font-heading);
	font-size: 1.08rem;
	font-weight: 800;
	gap: 0.5rem;
	margin: 0;
}

.kf-toc__title::before {
	color: var(--color-main);
	content: "目次";
	font-family: var(--kf-font-number);
	font-size: 0.7rem;
	letter-spacing: 0.08em;
}

.kf-toc__list {
	counter-reset: kf-toc;
	margin: 0.9rem 0 0;
	padding-left: 1.35rem;
}

.kf-toc__list[hidden] {
	display: none;
}

.kf-toc__item {
	margin: 0.42rem 0;
}

.kf-toc__item::marker {
	color: var(--color-main);
	font-family: var(--kf-font-number);
	font-weight: 800;
}

.kf-toc__item--h3 {
	font-size: 0.92rem;
	margin-left: 1rem;
}

.kf-toc__item a {
	color: var(--color-text);
	text-decoration: none;
}

.kf-toc__item a:hover {
	color: var(--color-main);
	text-decoration: underline;
}

.kf-point,
.kf-caution,
.kf-checklist,
.kf-faq,
.kf-author-box,
.kf-column-cta {
	border-radius: var(--kf-column-radius);
	margin: 1.8rem 0;
	padding: 1.25rem;
}

.kf-point {
	background: var(--color-sub);
	border-left: 7px solid var(--color-main);
}

.kf-point__title,
.kf-caution__title,
.kf-checklist__title {
	align-items: center;
	display: flex;
	font-family: var(--kf-font-heading);
	font-weight: 800;
	gap: 0.5rem;
	margin: 0 0 0.5rem;
}

.kf-point__title::before {
	background: var(--color-main);
	border-radius: 4px;
	color: #fff;
	content: "POINT";
	font-family: var(--kf-font-number);
	font-size: 0.68rem;
	letter-spacing: 0.08em;
	padding: 0.18rem 0.45rem;
}

.kf-point > :last-child,
.kf-caution > :last-child,
.kf-checklist > :last-child {
	margin-bottom: 0;
}

.kf-caution {
	background: var(--kf-column-warning-bg);
	border-left: 7px solid var(--color-accent);
}

.kf-caution__title {
	color: #9a3412;
}

.kf-caution__title::before {
	content: "⚠ 注意";
	font-size: 0.82rem;
}

.kf-checklist {
	background: #fafaf9;
	border: 1px solid #d6d3d1;
}

.kf-checklist__title {
	color: var(--color-accent);
}

.kf-checklist ul {
	list-style: none;
	margin: 0.7rem 0 0;
	padding: 0;
}

.kf-checklist li {
	padding-left: 1.8em;
	position: relative;
}

.kf-checklist li + li {
	margin-top: 0.55rem;
}

.kf-checklist li::before {
	align-items: center;
	background: var(--color-accent);
	border-radius: 50%;
	color: #fff;
	content: "✓";
	display: flex;
	font-size: 0.7rem;
	font-weight: 900;
	height: 1.25rem;
	justify-content: center;
	left: 0;
	position: absolute;
	top: 0.32em;
	width: 1.25rem;
}

.kf-table-wrap {
	-webkit-overflow-scrolling: touch;
	margin: 1.8rem 0;
	overflow-x: auto;
}

.kf-compare-table {
	border-collapse: collapse;
	font-size: 0.9rem;
	min-width: 640px;
	width: 100%;
}

.kf-compare-table th,
.kf-compare-table td {
	border: 1px solid var(--color-border);
	padding: 0.75rem 0.9rem;
	text-align: left;
	vertical-align: top;
}

.kf-compare-table th {
	background: var(--color-main);
	color: #fff;
	font-weight: 800;
	white-space: nowrap;
}

.kf-compare-table tbody th {
	background: var(--color-sub);
	color: var(--color-text);
}

.kf-compare-table tr:nth-child(even) td {
	background: var(--color-sub);
}

.kf-faq {
	background: var(--kf-column-surface);
	border: 1px solid var(--color-border);
}

.kf-faq__item + .kf-faq__item {
	border-top: 1px solid var(--color-border);
	margin-top: 1.2rem;
	padding-top: 1.2rem;
}

.kf-faq__question,
.kf-faq__answer {
	margin: 0;
	padding-left: 2.25rem;
	position: relative;
}

.kf-faq__question {
	font-weight: 800;
}

.kf-faq__answer {
	margin-top: 0.8rem;
}

.kf-faq__answer > :first-child {
	margin-top: 0;
}

.kf-faq__answer > :last-child {
	margin-bottom: 0;
}

.kf-faq__question::before,
.kf-faq__answer::before {
	align-items: center;
	border-radius: 50%;
	display: flex;
	font-family: var(--kf-font-number);
	font-weight: 900;
	height: 1.7rem;
	justify-content: center;
	left: 0;
	position: absolute;
	top: 0;
	width: 1.7rem;
}

.kf-faq__question::before {
	background: var(--color-main);
	color: #fff;
	content: "Q";
}

.kf-faq__answer::before {
	background: var(--color-sub);
	color: var(--color-main);
	content: "A";
}

.kf-related-grid {
	display: grid;
	gap: 1rem;
	margin: 1.8rem 0;
}

.kf-related-card {
	background: #fff;
	border: 1px solid var(--color-border);
	border-radius: var(--kf-column-radius);
	color: var(--color-text);
	display: grid;
	gap: 0.85rem;
	grid-template-columns: 96px 1fr;
	overflow: hidden;
	padding: 0.75rem;
	text-decoration: none;
	transition: border-color 0.2s ease, transform 0.2s ease;
}

.kf-related-card:hover {
	border-color: var(--color-main);
	color: var(--color-text);
	transform: translateY(-2px);
}

.kf-related-card__image {
	aspect-ratio: 1;
	border-radius: 5px;
	height: 100%;
	object-fit: cover;
	width: 100%;
}

.kf-related-card__content {
	align-self: center;
	min-width: 0;
}

.kf-related-card__meta {
	align-items: center;
	display: flex;
	flex-wrap: wrap;
	gap: 0.4rem 0.65rem;
	margin-bottom: 0.25rem;
}

.kf-related-card__category {
	background: var(--color-sub);
	border-radius: 4px;
	color: var(--color-main);
	font-size: 0.68rem;
	font-weight: 800;
	padding: 0.12rem 0.35rem;
}

.kf-related-card__date {
	color: var(--kf-column-muted);
	font-family: var(--kf-font-number);
	font-size: 0.7rem;
}

.kf-related-card__title {
	display: block;
	font-weight: 800;
	line-height: 1.55;
}

.kf-balloon {
	align-items: flex-start;
	display: flex;
	gap: 0.85rem;
	margin: 1.8rem 0;
}

.kf-balloon--right {
	flex-direction: row-reverse;
}

.kf-balloon__person {
	flex: 0 0 56px;
	text-align: center;
}

.kf-balloon__avatar {
	border: 2px solid var(--color-border);
	border-radius: 50%;
	height: 54px;
	object-fit: cover;
	width: 54px;
}

.kf-balloon__name {
	color: var(--kf-column-muted);
	display: block;
	font-size: 0.66rem;
	line-height: 1.35;
	margin-top: 0.3rem;
}

.kf-balloon__body {
	background: var(--color-sub);
	border: 1px solid var(--color-border);
	border-radius: var(--kf-column-radius);
	margin: 0;
	padding: 0.9rem 1rem;
	position: relative;
}

.kf-balloon__body::before {
	border-bottom: 8px solid transparent;
	border-right: 10px solid var(--color-border);
	border-top: 8px solid transparent;
	content: "";
	left: -10px;
	position: absolute;
	top: 17px;
}

.kf-balloon__body::after {
	border-bottom: 7px solid transparent;
	border-right: 9px solid var(--color-sub);
	border-top: 7px solid transparent;
	content: "";
	left: -8px;
	position: absolute;
	top: 18px;
}

.kf-balloon--right .kf-balloon__body {
	background: var(--kf-column-warning-bg);
}

.kf-balloon--right .kf-balloon__body::before {
	border-left: 10px solid var(--color-border);
	border-right: 0;
	left: auto;
	right: -10px;
}

.kf-balloon--right .kf-balloon__body::after {
	border-left: 9px solid var(--kf-column-warning-bg);
	border-right: 0;
	left: auto;
	right: -8px;
}

.kf-author-box {
	align-items: start;
	background: #fafaf9;
	border: 1px solid #d6d3d1;
	display: grid;
	gap: 1rem;
	grid-template-columns: 64px 1fr;
}

.kf-author-box__photo {
	border: 2px solid var(--color-border);
	border-radius: 50%;
	height: 64px;
	object-fit: cover;
	width: 64px;
}

.kf-author-box__role {
	color: var(--color-main);
	font-size: 0.72rem;
	font-weight: 800;
}

.kf-author-box__name {
	font-size: 1.05rem;
	margin: 0;
}

.kf-author-box__title {
	color: var(--kf-column-muted);
	font-size: 0.82rem;
	font-weight: 700;
	margin: 0.1rem 0 0.5rem;
}

.kf-author-box__profile {
	font-size: 0.9rem;
	margin: 0;
}

.kf-author-box__social {
	display: flex;
	flex-wrap: wrap;
	gap: 0.8rem;
	margin-top: 0.55rem;
}

.kf-author-box__social a {
	color: var(--color-accent);
	font-size: 0.78rem;
	font-weight: 800;
}

.kf-column-cta {
	background: linear-gradient(135deg, #991b1b, var(--color-main));
	box-shadow: var(--kf-column-shadow);
	color: #fff;
	text-align: center;
}

.kf-column-cta__label {
	font-size: 0.72rem;
	font-weight: 800;
	letter-spacing: 0.08em;
	margin: 0 0 0.35rem;
}

.kf-column-cta__title {
	color: #fff;
	font-size: clamp(1.25rem, 5vw, 1.6rem);
	margin: 0 0 0.5rem;
}

.kf-column-cta__text {
	margin: 0 0 1rem;
}

.kf-column-cta__button {
	background: var(--color-accent);
	border: 2px solid #fff;
	border-radius: 7px;
	box-shadow: 0 6px 16px rgba(28, 25, 23, 0.2);
	color: #fff;
	display: inline-flex;
	font-weight: 800;
	justify-content: center;
	padding: 0.7rem 1.25rem;
	text-decoration: none;
	transition: background 0.2s ease, transform 0.2s ease;
}

.kf-column-cta__button:hover {
	background: #c2410c;
	color: #fff;
	transform: translateY(-1px);
}

/* Standalone dummy preview. */
.kf-dummy-body {
	background: #f5f5f4;
	color: var(--color-text);
	font-family: var(--kf-font-body);
	margin: 0;
}

.kf-dummy-body *,
.kf-dummy-body *::before,
.kf-dummy-body *::after {
	box-sizing: border-box;
}

.kf-dummy-body img {
	display: block;
	max-width: 100%;
}

.kf-dummy-header {
	background: #fff;
	border-bottom: 1px solid var(--color-border);
}

.kf-dummy-header__inner {
	align-items: center;
	display: flex;
	justify-content: space-between;
	margin-inline: auto;
	max-width: 1040px;
	min-height: 68px;
	padding-inline: 1rem;
}

.kf-dummy-header__brand {
	color: var(--color-text);
	font-family: var(--kf-font-heading);
	font-weight: 900;
	text-decoration: none;
}

.kf-dummy-header__badge {
	background: var(--color-sub);
	border-radius: 999px;
	color: var(--color-main);
	font-size: 0.75rem;
	font-weight: 800;
	padding: 0.3rem 0.7rem;
}

.kf-dummy-main {
	background: #fff;
	margin: 1.25rem auto 3rem;
	max-width: 860px;
	padding: 1rem;
}

.kf-dummy-breadcrumb {
	color: var(--kf-column-muted);
	font-size: 0.75rem;
	margin-bottom: 1.4rem;
}

.kf-dummy-breadcrumb a {
	color: var(--kf-column-muted);
}

.kf-dummy-article__category {
	background: var(--color-sub);
	border-radius: 4px;
	color: var(--color-main);
	display: inline-block;
	font-size: 0.72rem;
	font-weight: 800;
	padding: 0.2rem 0.5rem;
}

.kf-dummy-article__title {
	font-family: var(--kf-font-heading);
	font-size: clamp(1.8rem, 7vw, 2.7rem);
	line-height: 1.35;
	margin: 0.7rem 0;
}

.kf-dummy-article__meta {
	color: var(--kf-column-muted);
	display: flex;
	flex-wrap: wrap;
	font-size: 0.75rem;
	gap: 0.4rem 1rem;
	margin-bottom: 1.5rem;
}

.kf-dummy-article__eyecatch {
	aspect-ratio: 1200 / 630;
	border-radius: var(--kf-column-radius);
	object-fit: cover;
	width: 100%;
}

.kf-dummy-lead {
	font-size: 1.05rem;
	font-weight: 700;
}

.kf-dummy-section-label {
	color: var(--color-main);
	font-family: var(--kf-font-number);
	font-size: 0.72rem;
	font-weight: 900;
	letter-spacing: 0.08em;
	margin-top: 3rem;
}

@media (min-width: 640px) {
	.kf-toc,
	.kf-point,
	.kf-caution,
	.kf-checklist,
	.kf-faq,
	.kf-author-box,
	.kf-column-cta {
		padding: 1.5rem;
	}

	.kf-related-grid {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.kf-author-box {
		grid-template-columns: 82px 1fr;
	}

	.kf-author-box__photo {
		height: 82px;
		width: 82px;
	}

	.kf-dummy-main {
		border: 1px solid #e7e5e4;
		border-radius: 12px;
		box-shadow: var(--kf-column-shadow);
		padding: 2.5rem 3rem;
	}
}

@media (min-width: 1024px) {
	.kf-related-card {
		grid-template-columns: 120px 1fr;
	}
}

@media (prefers-reduced-motion: reduce) {
	.kf-related-card,
	.kf-column-cta__button {
		scroll-behavior: auto;
		transition-duration: 0.01ms;
	}
}