/* apps.catslibrary.com 공용 스타일 */
:root {
	color-scheme: light dark;
	--bg: #ffffff;
	--bg-soft: #f5f6f8;
	--card: #ffffff;
	--text: #1d1d1f;
	--text-soft: #61646b;
	--border: rgba(20, 30, 45, 0.12);
	--accent: #1789fa; /* 앱 아이콘 블루 */
	--accent-strong: #0e6fd4;
	--accent-soft: rgba(23, 137, 250, 0.1);
	--shadow: 0 1px 2px rgba(15, 30, 50, 0.05), 0 8px 24px rgba(15, 30, 50, 0.06);
}

@media (prefers-color-scheme: dark) {
	:root {
		--bg: #0c0d10;
		--bg-soft: #16181d;
		--card: #1a1c22;
		--text: #f2f3f5;
		--text-soft: #a2a7b0;
		--border: rgba(235, 240, 250, 0.14);
		--accent: #55a8ff;
		--accent-strong: #7cbcff;
		--accent-soft: rgba(85, 168, 255, 0.14);
		--shadow: none;
	}
}

* {
	box-sizing: border-box;
}

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

[id] {
	scroll-margin-top: 68px;
}

body {
	margin: 0;
	background: var(--bg);
	color: var(--text);
	font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
		"Segoe UI", Roboto, "Noto Sans KR", "Helvetica Neue", Arial, sans-serif;
	font-size: 1.0625rem;
	line-height: 1.72;
	word-break: keep-all;
	overflow-wrap: break-word;
}

.wrap {
	max-width: 700px;
	margin: 0 auto;
	padding: 0 20px;
}

/* 헤더 */
.site-header {
	border-bottom: 1px solid var(--border);
	background: color-mix(in srgb, var(--bg) 88%, transparent);
	backdrop-filter: blur(12px);
	-webkit-backdrop-filter: blur(12px);
	position: sticky;
	top: 0;
	z-index: 10;
}

.site-header .wrap {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	min-height: 52px;
}

.brand {
	font-weight: 700;
	font-size: 0.9375rem;
	letter-spacing: 0.01em;
	color: var(--text);
	text-decoration: none;
}

.brand span {
	color: var(--text-soft);
	font-weight: 500;
}

.header-nav {
	display: flex;
	gap: 16px;
	font-size: 0.875rem;
}

.header-nav a {
	color: var(--text-soft);
	text-decoration: none;
}

.header-nav a:hover {
	color: var(--accent);
}

main {
	padding: 44px 0 24px;
}

h1 {
	font-size: 1.85rem;
	line-height: 1.3;
	letter-spacing: -0.015em;
	margin: 0 0 10px;
}

h2 {
	font-size: 1.28rem;
	line-height: 1.4;
	letter-spacing: -0.01em;
	margin: 44px 0 12px;
}

h3 {
	font-size: 1.05rem;
	margin: 26px 0 8px;
}

p {
	margin: 0 0 14px;
}

ul,
ol {
	padding-left: 22px;
	margin: 0 0 14px;
}

li {
	margin: 4px 0;
}

a {
	color: var(--accent);
	text-underline-offset: 3px;
}

a:hover {
	color: var(--accent-strong);
}

.muted {
	color: var(--text-soft);
}

.small {
	font-size: 0.9rem;
}

hr {
	border: 0;
	border-top: 1px solid var(--border);
	margin: 40px 0;
}

/* 카드 */
.card {
	display: flex;
	gap: 18px;
	align-items: center;
	padding: 20px;
	border: 1px solid var(--border);
	border-radius: 20px;
	background: var(--card);
	box-shadow: var(--shadow);
	text-decoration: none;
	color: inherit;
	transition: border-color 0.15s ease;
}

a.card:hover {
	border-color: var(--accent);
	color: inherit;
}

.card .app-icon {
	width: 76px;
	height: 76px;
	border-radius: 17px;
	flex-shrink: 0;
}

.card h2 {
	margin: 0 0 2px;
	font-size: 1.15rem;
}

.card p {
	margin: 0;
	font-size: 0.92rem;
	color: var(--text-soft);
	line-height: 1.55;
}

.card .go {
	margin-left: auto;
	color: var(--text-soft);
	font-size: 1.2rem;
	flex-shrink: 0;
}

/* 히어로 (앱 소개) */
.hero {
	display: flex;
	gap: 22px;
	align-items: center;
	margin-bottom: 8px;
}

.hero .app-icon {
	width: 104px;
	height: 104px;
	border-radius: 24px;
	flex-shrink: 0;
	box-shadow: var(--shadow);
}

.hero h1 {
	margin: 0;
}

.hero .tagline {
	margin: 6px 0 0;
	color: var(--text-soft);
	font-size: 1rem;
	line-height: 1.55;
}

/* 뱃지, 버튼 */
.badge {
	display: inline-block;
	padding: 5px 12px;
	border-radius: 999px;
	background: var(--accent-soft);
	color: var(--accent-strong);
	font-size: 0.82rem;
	font-weight: 600;
	white-space: nowrap;
}

.badge.neutral {
	background: var(--bg-soft);
	color: var(--text-soft);
}

.btn-row {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	margin: 22px 0 6px;
}

.btn {
	display: inline-block;
	padding: 9px 18px;
	border-radius: 999px;
	font-size: 0.92rem;
	font-weight: 600;
	text-decoration: none;
	background: var(--accent);
	color: #fff;
}

.btn:hover {
	background: var(--accent-strong);
	color: #fff;
}

.btn.secondary {
	background: var(--bg-soft);
	color: var(--text);
	border: 1px solid var(--border);
}

.btn.secondary:hover {
	border-color: var(--accent);
	color: var(--accent);
	background: var(--bg-soft);
}

/* 기능 목록 */
.features {
	list-style: none;
	padding: 0;
	margin: 14px 0 0;
	display: grid;
	gap: 12px;
}

.features li {
	margin: 0;
	padding: 16px 18px;
	border: 1px solid var(--border);
	border-radius: 16px;
	background: var(--card);
}

.features b {
	display: block;
	margin-bottom: 2px;
}

.features .desc {
	font-size: 0.92rem;
	color: var(--text-soft);
	line-height: 1.6;
}

/* 안내 박스 */
.callout {
	padding: 18px 20px;
	border-radius: 16px;
	background: var(--accent-soft);
	margin: 18px 0;
}

.callout p {
	margin: 0;
	font-size: 0.95rem;
}

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

/* FAQ */
.faq {
	border: 1px solid var(--border);
	border-radius: 16px;
	background: var(--card);
	margin: 12px 0;
	overflow: hidden;
}

.faq summary {
	cursor: pointer;
	padding: 15px 18px;
	font-weight: 600;
	list-style: none;
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 12px;
}

.faq summary::-webkit-details-marker {
	display: none;
}

.faq summary::after {
	content: "+";
	color: var(--text-soft);
	font-size: 1.2rem;
	font-weight: 400;
	flex-shrink: 0;
	transition: transform 0.15s ease;
}

.faq[open] summary::after {
	transform: rotate(45deg);
}

.faq .a {
	padding: 0 18px 16px;
	font-size: 0.95rem;
	color: var(--text-soft);
}

.faq .a p {
	margin: 0 0 10px;
}

.faq .a p:last-child,
.faq .a ol:last-child,
.faq .a ul:last-child {
	margin-bottom: 0;
}

/* 개인정보처리방침 */
.lang-nav {
	display: flex;
	gap: 8px;
	margin: 6px 0 26px;
}

.lang-nav a {
	padding: 6px 14px;
	border-radius: 999px;
	border: 1px solid var(--border);
	font-size: 0.88rem;
	font-weight: 600;
	text-decoration: none;
	color: var(--text-soft);
}

.lang-nav a:hover {
	border-color: var(--accent);
	color: var(--accent);
}

.policy h2 {
	margin-top: 38px;
}

.policy-meta {
	font-size: 0.9rem;
	color: var(--text-soft);
	margin-bottom: 4px;
}

.summary-box {
	border: 1px solid var(--border);
	border-radius: 16px;
	background: var(--card);
	padding: 18px 20px;
	margin: 18px 0 8px;
}

.summary-box ul {
	margin: 0;
	padding-left: 20px;
}

.summary-box li {
	margin: 5px 0;
}

/* 푸터 */
.site-footer {
	border-top: 1px solid var(--border);
	margin-top: 56px;
	padding: 26px 0 40px;
	font-size: 0.85rem;
	color: var(--text-soft);
}

.site-footer .links {
	display: flex;
	flex-wrap: wrap;
	gap: 14px;
	margin-bottom: 10px;
}

.site-footer a {
	color: var(--text-soft);
	text-decoration: none;
}

.site-footer a:hover {
	color: var(--accent);
}

.site-footer p {
	margin: 0;
}

@media (max-width: 480px) {
	main {
		padding-top: 32px;
	}

	h1 {
		font-size: 1.55rem;
	}

	.hero {
		gap: 16px;
	}

	.hero .app-icon {
		width: 84px;
		height: 84px;
		border-radius: 19px;
	}

	.card .app-icon {
		width: 64px;
		height: 64px;
		border-radius: 14px;
	}
}