:root {
	--color-primary: #2563a6;
	--color-primary-dark: #174b7a;
	--color-primary-light: #eaf3fb;
	--color-primary-soft: #f5f9fd;
	--color-text: #222831;
	--color-text-soft: #5e6875;
	--color-border: #dfe5eb;
	--color-border-light: #edf0f3;
	--color-background: #ffffff;
	--color-background-soft: #f7f9fb;
	--container-width: 1080px;
	--header-height: 72px;
	--radius-small: 6px;
	--radius-medium: 10px;
	--radius-large: 14px;
	--shadow-card: 0 4px 18px rgba(25, 55, 85, 0.07);
	--shadow-hover: 0 10px 28px rgba(25, 55, 85, 0.13);
}

* {
	box-sizing: border-box;
}

html {
	scroll-behavior: smooth;
}

body {
	min-width: 320px;
	min-height: 100vh;
	margin: 0;
	display: flex;
	flex-direction: column;
	background: var(--color-background);
	color: var(--color-text);
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", "Apple SD Gothic Neo", Arial, sans-serif;
	font-size: 16px;
	line-height: 1.75;
	word-break: keep-all;
	overflow-wrap: break-word;
	-webkit-font-smoothing: antialiased;
}

button,
input,
textarea,
select {
	font: inherit;
}

button {
	border: 0;
}

img {
	max-width: 100%;
	height: auto;
	vertical-align: middle;
}

a {
	color: inherit;
	text-decoration: none;
}

ul,
ol {
	margin-top: 0;
}

main {
	flex: 1;
}

.header {
	position: relative;
	z-index: 1000;
	background: #ffffff;
	border-bottom: 1px solid var(--color-border);
}

.header::after {
	content: "";
	position: absolute;
	right: 0;
	bottom: -1px;
	left: 0;
	height: 2px;
	background: var(--color-primary);
}

.inner {
	width: min(calc(100% - 40px), var(--container-width));
	min-height: var(--header-height);
	margin: 0 auto;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 40px;
}

.logo {
	flex: 0 0 auto;
}

.logo a {
	display: flex;
	align-items: center;
}

.logo img {
	display: block;
}

.nav {
	margin-left: auto;
}

.menu {
	margin: 0;
	padding: 0;
	display: flex;
	align-items: center;
	gap: 6px;
	list-style: none;
}

.menu li {
	margin: 0;
	padding: 0;
}

.link {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 42px;
	padding: 0 17px;
	border-radius: var(--radius-small);
	color: #3f4853;
	font-size: 15px;
	font-weight: 600;
	transition:
		background-color 0.2s ease,
		color 0.2s ease;
}

.link:hover {
	background: var(--color-primary-soft);
	color: var(--color-primary-dark);
}

.link.is-active {
	background: var(--color-primary-light);
	color: var(--color-primary-dark);
}

.link.is-active::after {
	content: "";
	position: absolute;
	right: 17px;
	bottom: 6px;
	left: 17px;
	height: 2px;
	border-radius: 2px;
	background: var(--color-primary);
}

.burger {
	width: 42px;
	height: 42px;
	padding: 9px;
	display: none;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 5px;
	background: transparent;
	border-radius: var(--radius-small);
	cursor: pointer;
}

.burger:hover {
	background: var(--color-primary-soft);
}

.burger-bar {
	width: 22px;
	height: 2px;
	display: block;
	background: var(--color-text);
	border-radius: 2px;
	transition:
		transform 0.2s ease,
		opacity 0.2s ease;
}

.burger[aria-expanded="true"] .burger-bar:nth-child(1) {
	transform: translateY(7px) rotate(45deg);
}

.burger[aria-expanded="true"] .burger-bar:nth-child(2) {
	opacity: 0;
}

.burger[aria-expanded="true"] .burger-bar:nth-child(3) {
	transform: translateY(-7px) rotate(-45deg);
}

.contents {
	padding: 48px 0 70px;
}

.container {
	width: min(calc(100% - 40px), var(--container-width));
	margin: 0 auto;
}

.page-header {
	width: min(calc(100% - 40px), var(--container-width));
	margin: 0 auto 30px;
	padding-bottom: 18px;
	border-bottom: 1px solid var(--color-border);
}

.page-title {
	position: relative;
	margin: 0;
	padding-left: 17px;
	color: var(--color-text);
	font-size: clamp(28px, 4vw, 36px);
	font-weight: 750;
	line-height: 1.35;
	letter-spacing: -0.035em;
}

.page-title::before {
	content: "";
	position: absolute;
	top: 0.25em;
	bottom: 0.2em;
	left: 0;
	width: 5px;
	border-radius: 4px;
	background: var(--color-primary);
}

.card-list {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 26px 22px;
}

.card {
	min-width: 0;
	overflow: hidden;
	background: #ffffff;
	border: 1px solid var(--color-border);
	border-radius: var(--radius-medium);
	box-shadow: var(--shadow-card);
	transition:
		transform 0.2s ease,
		border-color 0.2s ease,
		box-shadow 0.2s ease;
}

.card:hover {
	transform: translateY(-3px);
	border-color: #b8cee2;
	box-shadow: var(--shadow-hover);
}

.card-link {
	height: 100%;
	display: flex;
	flex-direction: column;
}

.card-image {
	position: relative;
	aspect-ratio: 2 / 1;
	overflow: hidden;
	background: var(--color-background-soft);
	border-bottom: 1px solid var(--color-border-light);
}

.card-image:empty::before {
	content: "이미지 준비 중";
	position: absolute;
	inset: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	color: #89939e;
	font-size: 14px;
}

.card-image img {
	width: 100%;
	height: 100%;
	display: block;
	object-fit: cover;
	transition: transform 0.35s ease;
}

.card:hover .card-image img {
	transform: scale(1.035);
}

.card-content {
	flex: 1;
	padding: 18px 18px 20px;
	display: flex;
	align-items: flex-start;
}

.card-title {
	margin: 0;
	color: var(--color-text);
	font-size: 18px;
	font-weight: 700;
	line-height: 1.5;
	letter-spacing: -0.025em;
}

.card-link:hover .card-title {
	color: var(--color-primary-dark);
}

.empty-message {
	grid-column: 1 / -1;
	margin: 0;
	padding: 60px 20px;
	background: var(--color-background-soft);
	border: 1px solid var(--color-border);
	border-radius: var(--radius-medium);
	color: var(--color-text-soft);
	text-align: center;
}

.pagination {
	margin-top: 40px;
	display: flex;
	align-items: center;
	justify-content: center;
	flex-wrap: wrap;
	gap: 7px;
}

.pagination p {
	margin: 0;
	display: flex;
	align-items: center;
	justify-content: center;
	flex-wrap: wrap;
	gap: 7px;
}

.pagination a,
.pagination strong {
	min-width: 40px;
	height: 40px;
	padding: 0 11px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	border: 1px solid var(--color-border);
	border-radius: var(--radius-small);
	font-size: 14px;
	font-weight: 600;
	line-height: 1;
}

.pagination a {
	background: #ffffff;
	color: #4d5864;
	transition:
		background-color 0.2s ease,
		border-color 0.2s ease,
		color 0.2s ease;
}

.pagination a:hover {
	background: var(--color-primary-soft);
	border-color: #aac7df;
	color: var(--color-primary-dark);
}

.pagination strong {
	background: var(--color-primary);
	border-color: var(--color-primary);
	color: #ffffff;
}

.post {
	max-width: 900px;
	margin: 0 auto;
}

.post-header {
	margin-bottom: 38px;
	padding-bottom: 24px;
	border-bottom: 1px solid var(--color-border);
}

.post-title {
	position: relative;
	margin: 0;
	padding-left: 19px;
	color: var(--color-text);
	font-size: clamp(28px, 4vw, 36px);
	font-weight: 780;
	line-height: 1.35;
	letter-spacing: -0.04em;
}

.post-title::before {
	content: "";
	position: absolute;
	top: 0.2em;
	bottom: 0.15em;
	left: 0;
	width: 6px;
	border-radius: 5px;
	background: var(--color-primary);
}

.post-content {
	color: #303841;
	font-size: 17px;
	line-height: 1.9;
}

.post-content > :first-child {
	margin-top: 0;
}

.post-content > :last-child {
	margin-bottom: 0;
}

.post-content p {
	margin: 0 0 20px;
}

.post-content p:empty {
	display: none;
}

.post-content h2 {
	margin: 46px 0 20px;
	padding-bottom: 12px;
	border-bottom: 1px solid var(--color-border);
	color: var(--color-text);
	font-size: 26px;
	font-weight: 750;
	line-height: 1.45;
	letter-spacing: -0.035em;
}

.post-content h3 {
	margin: 38px 0 16px;
	color: var(--color-text);
	font-size: 21px;
	font-weight: 720;
	line-height: 1.5;
	letter-spacing: -0.025em;
}

.post-content ul,
.post-content ol {
	margin-bottom: 24px;
	padding-left: 25px;
}

.post-content li {
	margin-bottom: 8px;
}

.post-content a:not(.item-widget-button) {
	color: var(--color-primary-dark);
	text-decoration: underline;
	text-decoration-thickness: 1px;
	text-underline-offset: 3px;
}

.post-content blockquote {
	margin: 28px 0;
	padding: 20px 24px;
	background: var(--color-primary-soft);
	border-left: 4px solid var(--color-primary);
	border-radius: 0 var(--radius-small) var(--radius-small) 0;
	color: #44515e;
}

.post-content table {
	width: 100%;
	margin: 28px 0;
	border-collapse: collapse;
	border-top: 2px solid var(--color-primary);
	font-size: 15px;
}

.post-content th,
.post-content td {
	padding: 13px 14px;
	border: 1px solid var(--color-border);
	text-align: left;
	vertical-align: middle;
}

.post-content th {
	background: var(--color-primary-soft);
	color: var(--color-text);
	font-weight: 700;
}

.item {
	margin: 48px 0;
	padding: 28px;
	background: #ffffff;
	border: 1px solid var(--color-border);
	border-radius: var(--radius-large);
	box-shadow: var(--shadow-card);
}

.item:first-of-type {
	margin-top: 34px;
}

.item-image {
	width: 100%;
	aspect-ratio: 2 / 1;
	margin: 0 0 25px;
	display: block;
	object-fit: cover;
	border-radius: var(--radius-medium);
	background: var(--color-background-soft);
	transition:
		transform 0.2s ease,
		box-shadow 0.2s ease,
		opacity 0.2s ease;
}

.item-image[data-item] {
	cursor: pointer;
}

.item-image[data-item]:hover {
	transform: translateY(-2px);
	box-shadow: 0 9px 24px rgba(25, 55, 85, 0.16);
	opacity: 0.96;
}

.item-image[data-item]:active {
	transform: translateY(0);
}

.item-image[data-item]:focus-visible {
	outline: 3px solid rgba(37, 99, 166, 0.35);
	outline-offset: 4px;
}

.item-name {
	position: relative;
	margin: 0 0 22px !important;
	padding: 2px 0 15px 19px !important;
	border-bottom: 1px solid var(--color-border) !important;
	color: var(--color-text);
	font-size: 27px !important;
	font-weight: 750;
	line-height: 1.45;
	letter-spacing: -0.035em;
}

.item-name::before {
	content: "";
	position: absolute;
	top: 0.25em;
	bottom: calc(0.25em + 15px);
	left: 0;
	width: 5px;
	border-radius: 4px;
	background: var(--color-primary);
}

.item-widget {
	width: 100%;
	margin-top: 28px;
	display: flex;
	align-items: center;
	justify-content: center;
}

.item-widget-button {
	width: 100%;
	max-width: 500px;
	min-height: 54px;
	margin: 0 auto;
	padding: 14px 24px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
	background: var(--color-primary);
	border: 1px solid var(--color-primary);
	border-radius: var(--radius-medium);
	color: #ffffff;
	font-size: 16px;
	font-weight: 700;
	line-height: 1.35;
	letter-spacing: -0.015em;
	cursor: pointer;
	box-shadow: 0 5px 14px rgba(37, 99, 166, 0.18);
	transition:
		background-color 0.2s ease,
		border-color 0.2s ease,
		transform 0.2s ease,
		box-shadow 0.2s ease;
}

.item-widget-button::after {
	content: "›";
	font-size: 23px;
	font-weight: 400;
	line-height: 1;
	transform: translateY(-1px);
}

.item-widget-button:hover {
	background: var(--color-primary-dark);
	border-color: var(--color-primary-dark);
	transform: translateY(-1px);
	box-shadow: 0 8px 18px rgba(37, 99, 166, 0.24);
}

.item-widget-button:active {
	transform: translateY(0);
	box-shadow: 0 3px 10px rgba(37, 99, 166, 0.18);
}

.item-widget-button:disabled {
	background: #aeb7c0;
	border-color: #aeb7c0;
	cursor: not-allowed;
	box-shadow: none;
}

.post + .container,
.container + .container {
	margin-top: 56px;
	padding-top: 44px;
	border-top: 1px solid var(--color-border);
}

.footer {
	margin-top: auto;
	background: var(--color-background-soft);
	border-top: 1px solid var(--color-border);
}

.footer-inner {
	width: min(calc(100% - 40px), var(--container-width));
	min-height: 110px;
	margin: 0 auto;
	display: flex;
	align-items: center;
	justify-content: center;
}

.footer-copy {
	color: #343739;
	font-size: 14px;
	text-align: center;
}

.footer-copy p {
	margin: 0;
}

a:focus-visible,
button:focus-visible {
	outline: 3px solid rgba(37, 99, 166, 0.3);
	outline-offset: 3px;
}

@media (max-width: 900px) {
	.card-list {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.post {
		max-width: 100%;
	}

	.post-content {
		font-size: 16px;
	}

	.item {
		padding: 24px;
	}
}

@media (max-width: 760px) {
	:root {
		--header-height: 64px;
	}

	.inner {
		width: min(calc(100% - 30px), var(--container-width));
		gap: 15px;
	}

	.logo img {
		max-width: 135px;
		height: 36px;
	}

	.burger {
		display: flex;
		margin-left: auto;
	}

	.nav {
		position: absolute;
		top: calc(100% + 2px);
		right: 0;
		left: 0;
		max-height: 0;
		overflow: hidden;
		background: #ffffff;
		border-bottom: 1px solid transparent;
		opacity: 0;
		visibility: hidden;
		transition:
			max-height 0.25s ease,
			opacity 0.2s ease,
			visibility 0.2s ease,
			border-color 0.2s ease;
	}

	.nav.is-open {
		max-height: 420px;
		border-bottom-color: var(--color-border);
		opacity: 1;
		visibility: visible;
		box-shadow: 0 12px 24px rgba(20, 45, 70, 0.08);
	}

	.menu {
		width: min(calc(100% - 30px), var(--container-width));
		margin: 0 auto;
		padding: 12px 0 18px;
		display: block;
	}

	.link {
		min-height: 46px;
		padding: 0 14px;
		justify-content: flex-start;
		border-radius: var(--radius-small);
	}

	.link.is-active::after {
		top: 12px;
		right: auto;
		bottom: 12px;
		left: 0;
		width: 3px;
		height: auto;
	}

	.contents {
		padding: 36px 0 55px;
	}

	.container,
	.page-header {
		width: min(calc(100% - 30px), var(--container-width));
	}

	.page-header {
		margin-bottom: 24px;
	}

	.page-title {
		padding-left: 15px;
		font-size: 28px;
	}

	.post-header {
		margin-bottom: 30px;
		padding-bottom: 20px;
	}

	.post-title {
		padding-left: 16px;
		font-size: 30px;
	}

	.post-content h2 {
		margin-top: 38px;
		font-size: 23px;
	}

	.post-content h3 {
		margin-top: 32px;
		font-size: 20px;
	}

	.item {
		margin: 38px 0;
		padding: 20px;
		border-radius: var(--radius-medium);
	}

	.item-name {
		font-size: 23px !important;
	}

	.item-widget-button {
		min-height: 52px;
		padding: 13px 18px;
		font-size: 15px;
	}

	.post + .container,
	.container + .container {
		margin-top: 44px;
		padding-top: 36px;
	}

	.footer-inner {
		width: min(calc(100% - 30px), var(--container-width));
		min-height: 95px;
	}
}

@media (max-width: 560px) {
	body {
		line-height: 1.7;
		word-break: normal;
	}

	.card-list {
		grid-template-columns: 1fr;
		gap: 18px;
	}

	.card-content {
		padding: 16px 16px 18px;
	}

	.card-title {
		font-size: 17px;
	}

	.post-content {
		font-size: 16px;
		line-height: 1.85;
	}

	.post-content table {
		display: block;
		overflow-x: auto;
		white-space: nowrap;
	}

	.item {
		padding: 16px;
	}

	.item-image {
		margin-bottom: 20px;
		border-radius: var(--radius-small);
	}

	.item-name {
		padding-left: 17px !important;
	}

	.item-widget-button {
		max-width: 100%;
	}

	.pagination {
		margin-top: 32px;
	}

	.pagination a,
	.pagination strong {
		min-width: 38px;
		height: 38px;
	}
}

@media (prefers-reduced-motion: reduce) {
	*,
	*::before,
	*::after {
		scroll-behavior: auto !important;
		transition-duration: 0.01ms !important;
		animation-duration: 0.01ms !important;
		animation-iteration-count: 1 !important;
	}
}