/* 静的ページ(運営者・プライバシー・利用規約・404)共通。index.html のトークンに揃える */
:root {
	--navy: #0b1e3a;
	--navy-100: #b9c6da;
	--teal: #33d6b5;
	--paper: #f6f8fb;
	--ink: #14213d;
	--ink-muted: #5c6478;
	--rule: #d5d9e1;
	--display: "Zen Kaku Gothic New", "Noto Sans JP", system-ui, sans-serif;
	--body: "Noto Sans JP", system-ui, sans-serif;
}
* {
	box-sizing: border-box;
}
body {
	margin: 0;
	background: var(--paper);
	color: var(--ink);
	font-family: var(--body);
	font-size: 15px;
	line-height: 1.75;
}
.wrap {
	max-width: 64rem;
	margin: 0 auto;
	padding-inline: 1.25rem;
}
@media (min-width: 640px) {
	.wrap {
		padding-inline: 2rem;
	}
}
.hero {
	background: var(--navy);
	color: #fff;
	padding-block: 1.75rem 2.5rem;
}
.nav {
	display: flex;
	justify-content: space-between;
	align-items: center;
	flex-wrap: wrap;
	gap: 0.75rem 1.5rem;
	font-size: 0.875rem;
	margin-bottom: 2rem;
}
.brands {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.25rem 0.75rem;
}
.home {
	color: var(--navy-100);
	text-decoration: none;
	font-size: 0.8rem;
	white-space: nowrap;
}
.home:hover {
	color: #fff;
}
.sep {
	color: var(--navy-300, #7d8aa3);
}
.brand {
	color: #fff;
	white-space: nowrap;
	text-decoration: none;
	font-family: var(--display);
	font-weight: 900;
	font-size: 1.125rem;
	letter-spacing: 0.025em;
}
.mark {
	display: inline-block;
	width: 0.75rem;
	height: 0.75rem;
	margin-right: 0.5rem;
	background: var(--teal);
	transform: rotate(45deg);
}
.links {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem 1.5rem;
}
.links a {
	color: var(--navy-100);
	text-decoration: none;
	white-space: nowrap;
}
.links a:hover {
	text-decoration: underline;
}
h1 {
	font-family: var(--display);
	font-weight: 900;
	font-size: 1.875rem;
	line-height: 1.25;
	margin: 0;
	text-wrap: balance;
}
.lead {
	color: var(--navy-100);
	margin: 0.75rem 0 0;
}
.prose {
	padding-block: 2rem 3rem;
}
.prose > * {
	max-width: 46rem;
}
.prose h2 {
	font-family: var(--display);
	font-size: 1.125rem;
	margin: 2rem 0 0.5rem;
	padding-top: 0.75rem;
	border-top: 1px solid var(--rule);
}
.prose h3 {
	font-family: var(--display);
	font-size: 1rem;
	margin: 1.25rem 0 0.25rem;
}
.prose > h2:first-child {
	margin-top: 0;
	padding-top: 0;
	border-top: 0;
}
.prose p,
.prose ul,
.prose ol {
	margin: 0.5rem 0;
}
.prose a {
	color: var(--ink);
	text-decoration: underline;
	text-underline-offset: 2px;
}
.prose a:hover {
	color: var(--ink-muted);
}
.prose dt {
	font-weight: 700;
	margin-top: 0.75rem;
}
.prose dd {
	margin: 0.25rem 0 0;
	color: var(--ink-muted);
}
.prose .meta {
	margin: 0 0 1rem;
	font-size: 0.8rem;
	color: var(--ink-muted);
}
.prose strong {
	font-weight: 700;
}
.prose code {
	font-family: "IBM Plex Mono", ui-monospace, monospace;
	font-size: 0.9em;
	background: #eef0f4;
	padding: 0.1em 0.35em;
	border-radius: 3px;
}
.foot {
	padding-block: 2rem;
	font-size: 0.75rem;
	color: var(--ink-muted);
}
.foot nav {
	display: flex;
	flex-wrap: wrap;
	gap: 0.25rem 1rem;
}
.foot a {
	color: inherit;
	text-decoration: underline;
	text-underline-offset: 2px;
}
.foot a:hover {
	color: var(--ink);
}
a:focus-visible,
button:focus-visible {
	outline: 2px solid var(--teal);
	outline-offset: 2px;
}