/* bizable.net — Tube Radar (internal tool) and its policies. Light, monochrome. */
:root {
	color-scheme: light;
	--bg: #ffffff;
	--bg-soft: #f5f5f3;
	--fg: #141414;
	--fg-dim: #4a4a47;
	--fg-mute: #77776f;
	--line: #e3e3df;
	--accent: #141414;
	--max: 1040px;
	--read: 720px;
	--pad: clamp(16px, 4vw, 40px);
	--sans: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Segoe UI', sans-serif;
	--mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
}

*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	-webkit-text-size-adjust: 100%;
}

body {
	margin: 0;
	background: var(--bg);
	color: var(--fg);
	font-family: var(--sans);
	font-size: 17px;
	line-height: 1.7;
	word-break: keep-all;
	overflow-wrap: break-word;
	-webkit-font-smoothing: antialiased;
}

a {
	color: inherit;
	text-underline-offset: 3px;
}

img {
	display: block;
	max-width: 100%;
	height: auto;
}

.wrap {
	max-width: var(--max);
	margin: 0 auto;
	padding: 0 var(--pad);
}

.skip {
	position: absolute;
	left: -9999px;
}

.skip:focus {
	left: 16px;
	top: 16px;
	background: var(--fg);
	color: var(--bg);
	padding: 8px 12px;
	z-index: 10;
}

/* header */
.top {
	border-bottom: 1px solid var(--line);
}

.top .wrap {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
	min-height: 64px;
}

.brand {
	display: flex;
	align-items: center;
	gap: 10px;
	font-weight: 700;
	text-decoration: none;
	letter-spacing: -0.01em;
}

.brand img {
	width: 24px;
	height: 24px;
}

.nav {
	display: flex;
	gap: 18px;
	font-size: 15px;
	color: var(--fg-dim);
}

.nav a {
	text-decoration: none;
}

.nav a:hover,
.nav a[aria-current='page'] {
	color: var(--fg);
	text-decoration: underline;
}

/* home */
.hero {
	padding: clamp(48px, 9vw, 104px) 0 clamp(40px, 6vw, 72px);
	border-bottom: 1px solid var(--line);
}

.eyebrow {
	margin: 0 0 14px;
	font-size: 14px;
	font-weight: 600;
	letter-spacing: 0.04em;
	color: var(--fg-mute);
}

.hero h1 {
	margin: 0;
	font-size: clamp(34px, 6vw, 56px);
	line-height: 1.15;
	letter-spacing: -0.03em;
}

.hero .lead {
	max-width: 640px;
	margin: 20px 0 0;
	font-size: clamp(18px, 2.2vw, 21px);
	color: var(--fg-dim);
}

.notice {
	display: inline-block;
	margin-top: 28px;
	padding: 10px 14px;
	border: 1px solid var(--line);
	background: var(--bg-soft);
	font-size: 15px;
	color: var(--fg-dim);
}

.section {
	padding: clamp(40px, 6vw, 72px) 0;
	border-bottom: 1px solid var(--line);
}

.section h2 {
	margin: 0 0 8px;
	font-size: clamp(24px, 3vw, 30px);
	letter-spacing: -0.02em;
}

.section > .wrap > p.sub {
	margin: 0 0 28px;
	color: var(--fg-dim);
	max-width: 680px;
}

.grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
	border-top: 1px solid var(--line);
	border-left: 1px solid var(--line);
}

.card {
	padding: 22px 22px 24px;
	border-right: 1px solid var(--line);
	border-bottom: 1px solid var(--line);
}

.card h3 {
	margin: 0 0 6px;
	font-size: 18px;
	letter-spacing: -0.01em;
}

.card p {
	margin: 0;
	font-size: 15.5px;
	color: var(--fg-dim);
}

.card .api {
	display: block;
	margin-top: 10px;
	font-family: var(--mono);
	font-size: 12.5px;
	color: var(--fg-mute);
}

.data-row {
	display: grid;
	grid-template-columns: minmax(0, 1fr) 240px;
	gap: 32px;
	align-items: start;
}

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

.facts li {
	padding: 12px 0;
	border-top: 1px solid var(--line);
	color: var(--fg-dim);
}

.facts li:last-child {
	border-bottom: 1px solid var(--line);
}

.facts b {
	color: var(--fg);
}

.yt-badge {
	display: block;
	border: 1px solid var(--line);
	background: #fff;
}

.yt-badge img {
	width: 100%;
}

.yt-note {
	margin: 10px 0 0;
	font-size: 13.5px;
	color: var(--fg-mute);
}

/* legal pages */
.doc {
	max-width: var(--read);
	margin: 0 auto;
	padding: clamp(40px, 7vw, 80px) var(--pad);
}

.doc h1 {
	margin: 0 0 8px;
	font-size: clamp(30px, 5vw, 40px);
	letter-spacing: -0.02em;
	line-height: 1.2;
}

.doc .meta {
	margin: 0 0 32px;
	color: var(--fg-mute);
	font-size: 15px;
}

.doc h2 {
	margin: 40px 0 10px;
	font-size: 21px;
	letter-spacing: -0.01em;
}

.doc p,
.doc li {
	color: var(--fg-dim);
}

.doc ul {
	padding-left: 1.2em;
}

.doc li + li {
	margin-top: 6px;
}

.doc b {
	color: var(--fg);
}

.doc .callout {
	margin: 0 0 8px;
	padding: 16px 18px;
	border: 1px solid var(--line);
	background: var(--bg-soft);
}

.doc .callout p {
	margin: 0;
}

.doc .callout p + p {
	margin-top: 8px;
}

/* footer */
.foot {
	padding: 32px 0 48px;
	font-size: 14px;
	color: var(--fg-mute);
}

.foot .wrap {
	display: flex;
	flex-wrap: wrap;
	justify-content: space-between;
	gap: 12px 24px;
}

.foot p {
	margin: 0;
}

.foot nav {
	display: flex;
	flex-wrap: wrap;
	gap: 16px;
}

@media (max-width: 720px) {
	body {
		font-size: 16px;
	}

	.data-row {
		grid-template-columns: 1fr;
		gap: 20px;
	}

	.yt-badge {
		max-width: 240px;
	}

	.nav {
		gap: 12px;
		font-size: 14px;
	}
}