*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
	--bg:        #050810;
	--bg2:       #080d1a;
	--surface:   #0d1525;
	--border:    rgba(0, 200, 255, 0.12);
	--cyan:      #00c8ff;
	--cyan-dim:  rgba(0, 200, 255, 0.18);
	--cyan-glow: rgba(0, 200, 255, 0.06);
	--green:     #00ff9d;
	--text:      #c8d8e8;
	--text-dim:  #5a7080;
	--mono:      'Share Tech Mono', 'Pretendard', 'Apple SD Gothic Neo', 'Malgun Gothic', monospace;
	--sans:      'Syne', 'Pretendard', 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
}

html { scroll-behavior: smooth; }
button, input, select, textarea { font-family: inherit; }

html[data-lang="ko"] [lang="en"] { display: none !important; }
html[data-lang="en"] [lang="ko"] { display: none !important; }
[lang="ko"] { word-break: keep-all; }

body {
	background: var(--bg);
	color: var(--text);
	font-family: var(--sans);
	font-size: 15px;
	line-height: 1.7;
	overflow-x: hidden;
}

body::before {
	content: '';
	position: fixed;
	inset: 0;
	background-image:
		linear-gradient(rgba(0,200,255,0.03) 1px, transparent 1px),
		linear-gradient(90deg, rgba(0,200,255,0.03) 1px, transparent 1px);
	background-size: 48px 48px;
	pointer-events: none;
	z-index: 0;
}

body > nav {
	position: fixed;
	top: 0; left: 0; right: 0;
	z-index: 100;
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0 3rem;
	height: 64px;
	background: rgba(5, 8, 16, 0.85);
	backdrop-filter: blur(12px);
	border-bottom: 1px solid var(--border);
}

.nav-logo {
	display: flex;
	align-items: center;
	gap: 10px;
	text-decoration: none;
}

.nav-logo-img {
	height: 30px;
	width: auto;
}

.nav-logo-sub {
	font-family: var(--mono);
	font-size: 0.65rem;
	color: var(--text-dim);
	letter-spacing: 0.1em;
	text-transform: uppercase;
}

.nav-links {
	display: flex;
	gap: 2.5rem;
	list-style: none;
}

.nav-links a {
	font-family: var(--mono);
	font-size: 0.72rem;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--text-dim);
	text-decoration: none;
	transition: color 0.2s;
}

.nav-links a:hover { color: var(--cyan); }

.nav-actions {
	display: flex;
	align-items: center;
	gap: 14px;
}

.nav-lang {
	display: flex;
	align-items: center;
	gap: 10px;
	font-family: var(--mono);
	font-size: 0.72rem;
	letter-spacing: 0.12em;
	text-transform: uppercase;
}

.nav-lang a {
	color: var(--text-dim);
	text-decoration: none;
	transition: color 0.2s, background 0.2s, border-color 0.2s;
	border: 1px solid transparent;
	padding: 6px 10px;
}

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

.nav-lang a.is-active {
	color: var(--bg);
	background: var(--cyan);
	border-color: var(--cyan);
}

.nav-lang-sep {
	color: var(--text-dim);
	opacity: 0.6;
	user-select: none;
}

.nav-cta {
	font-family: var(--mono);
	font-size: 0.72rem;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--cyan);
	border: 1px solid var(--cyan);
	padding: 8px 18px;
	text-decoration: none;
	transition: background 0.2s, color 0.2s;
}

.nav-cta:hover {
	background: var(--cyan);
	color: var(--bg);
}

#hero {
	position: relative;
	min-height: 72vh;
	display: flex;
	align-items: center;
	padding: 120px 3rem 80px;
	z-index: 1;
	overflow: hidden;
}

.hero-glow {
	position: absolute;
	top: 20%;
	right: -10%;
	width: 600px;
	height: 600px;
	background: radial-gradient(circle, rgba(0,200,255,0.07) 0%, transparent 70%);
	pointer-events: none;
}

.hero-inner {
	max-width: 1200px;
	margin: 0 auto;
	width: 100%;
}

.hero-tag {
	font-family: var(--mono);
	font-size: 0.72rem;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--cyan);
	margin-bottom: 1.5rem;
	display: flex;
	align-items: center;
	gap: 12px;
}

.hero-tag::before {
	content: '';
	display: inline-block;
	width: 32px;
	height: 1px;
	background: var(--cyan);
}

.hero-title {
	font-family: var(--sans);
	font-weight: 800;
	font-size: clamp(2.2rem, 5vw, 4.4rem);
	line-height: 1.05;
	letter-spacing: -0.03em;
	color: #fff;
	margin-bottom: 1.2rem;
}

.hero-title .accent { color: var(--cyan); }

.hero-desc {
	font-size: 1.05rem;
	color: var(--text-dim);
	max-width: 720px;
	margin-bottom: 2.2rem;
	line-height: 1.8;
}

.hero-actions {
	display: flex;
	gap: 1rem;
	flex-wrap: wrap;
}

.btn-primary {
	font-family: var(--mono);
	font-size: 0.78rem;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	background: var(--cyan);
	color: var(--bg);
	padding: 14px 28px;
	text-decoration: none;
	font-weight: 700;
	transition: opacity 0.2s, transform 0.2s;
}

.btn-primary:hover { opacity: 0.85; transform: translateY(-1px); }

.btn-outline {
	font-family: var(--mono);
	font-size: 0.78rem;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	border: 1px solid var(--border);
	color: var(--text);
	padding: 14px 28px;
	text-decoration: none;
	transition: border-color 0.2s, color 0.2s;
}

.btn-outline:hover { border-color: var(--cyan); color: var(--cyan); }

.btn-primary[lang="ko"], .btn-outline[lang="ko"],
.btn-primary [lang="ko"], .btn-outline [lang="ko"] { letter-spacing: .02em; }

section {
	position: relative;
	z-index: 1;
	padding: 100px 3rem;
}

.section-inner {
	max-width: 1200px;
	margin: 0 auto;
}

.section-label {
	font-family: var(--mono);
	font-size: 0.68rem;
	letter-spacing: 0.2em;
	text-transform: uppercase;
	color: var(--cyan);
	margin-bottom: 1rem;
}

.section-title {
	font-family: var(--sans);
	font-weight: 700;
	font-size: clamp(1.8rem, 3vw, 2.6rem);
	color: #fff;
	margin-bottom: 1rem;
	letter-spacing: -0.02em;
}

.section-desc {
	color: var(--text-dim);
	max-width: 720px;
	margin-bottom: 3rem;
}

#services { background: var(--bg2); }
#about { background: var(--bg2); }

.cards-3 {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 1px;
	background: var(--border);
	border: 1px solid var(--border);
}

.cards-2 {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 1px;
	background: var(--border);
	border: 1px solid var(--border);
}

.card {
	background: var(--bg2);
	padding: 2.5rem;
	transition: background 0.3s;
	position: relative;
	overflow: hidden;
}

#clients .card { background: var(--bg); }
#clients .card:hover { background: var(--surface); }

.card::before {
	content: '';
	position: absolute;
	top: 0; left: 0; right: 0;
	height: 2px;
	background: var(--cyan);
	transform: scaleX(0);
	transform-origin: left;
	transition: transform 0.3s;
}

.card:hover { background: var(--surface); }
.card:hover::before { transform: scaleX(1); }

.card-kicker {
	font-family: var(--mono);
	font-size: 0.65rem;
	letter-spacing: 0.2em;
	color: var(--cyan);
	margin-bottom: 1.2rem;
	display: block;
	text-transform: uppercase;
}

.card-title {
	font-weight: 700;
	font-size: 1.1rem;
	color: #fff;
	margin-bottom: 0.75rem;
}

.card-desc {
	font-size: 0.88rem;
	color: var(--text-dim);
	line-height: 1.7;
	margin-bottom: 1.25rem;
}

.card-actions {
	display: flex;
	gap: 0.75rem;
	flex-wrap: wrap;
}

.card-actions a {
	font-family: var(--mono);
	font-size: 0.72rem;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	text-decoration: none;
	border: 1px solid var(--border);
	color: var(--text);
	padding: 10px 14px;
	transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.card-actions a:hover {
	border-color: var(--cyan);
	color: var(--cyan);
	background: rgba(0, 200, 255, 0.03);
}

.card-actions a.primary {
	border-color: var(--cyan);
	color: var(--bg);
	background: var(--cyan);
}

.card-actions a.primary:hover { opacity: 0.9; color: var(--bg); }

body > footer {
	position: relative;
	z-index: 1;
	background: var(--surface);
	border-top: 1px solid var(--border);
	padding: 2rem 3rem;
}

.footer-inner {
	max-width: 1200px;
	margin: 0 auto;
	display: flex;
	align-items: center;
	justify-content: space-between;
	flex-wrap: wrap;
	gap: 1rem;
}

.footer-copy {
	font-family: var(--mono);
	font-size: 0.68rem;
	letter-spacing: 0.1em;
	color: var(--text-dim);
}

.footer-links {
	display: flex;
	gap: 1.5rem;
	list-style: none;
}

.footer-links a {
	font-family: var(--mono);
	font-size: 0.68rem;
	letter-spacing: 0.1em;
	color: var(--text-dim);
	text-decoration: none;
	transition: color 0.2s;
}

.footer-links a:hover { color: var(--cyan); }

body::after {
	content: '';
	position: fixed;
	inset: 0;
	background: repeating-linear-gradient(
		0deg,
		transparent,
		transparent 2px,
		rgba(0,0,0,0.03) 2px,
		rgba(0,0,0,0.03) 4px
	);
	pointer-events: none;
	z-index: 999;
}

@keyframes fadeUp {
	from { opacity: 0; transform: translateY(24px); }
	to   { opacity: 1; transform: translateY(0); }
}

.hero-tag   { animation: fadeUp 0.6s ease both; }
.hero-title { animation: fadeUp 0.6s 0.1s ease both; }
.hero-desc  { animation: fadeUp 0.6s 0.2s ease both; }
.hero-actions { animation: fadeUp 0.6s 0.3s ease both; }

@media (max-width: 900px) {
	body > nav { padding: 0 1.5rem; }
	.nav-links { display: none; }
	.nav-lang-sep { display: none; }
	.nav-lang { gap: 6px; }
	section { padding: 70px 1.5rem; }
	#hero { padding: 100px 1.5rem 60px; min-height: 70vh; }
	.cards-3 { grid-template-columns: 1fr; }
	.cards-2 { grid-template-columns: 1fr; }
}

/* Shared resource collection navigation. */
:root { --text-dim: #8a9eaf; }
.resource-category-nav {
	position: relative;
	z-index: 2;
	margin-top: 64px;
	padding: 0 3rem;
	background: rgba(8, 13, 26, .94);
	border-bottom: 1px solid var(--border);
}
.resource-category-inner {
	max-width: 1200px;
	margin: 0 auto;
	display: flex;
	align-items: stretch;
	gap: 2rem;
}
.resource-category-inner > a {
	display: inline-flex;
	align-items: center;
	gap: .55rem;
	min-height: 56px;
	padding: .85rem 0;
	border-bottom: 2px solid transparent;
	color: var(--text-dim);
	font: .76rem/1.4 var(--mono);
	text-decoration: none;
}
.resource-category-inner > a:first-child { margin-right: auto; }
.resource-category-inner > a[aria-current="page"] { color: var(--cyan); border-color: var(--cyan); }
.resource-category-inner > a:hover { color: #fff; }
.resource-category-inner > a:focus-visible, .resource-collection:focus-visible { outline: 2px solid var(--cyan); outline-offset: 4px; }
.resource-category-status { color: var(--text-dim); font: .56rem/1.5 var(--mono); border: 1px solid var(--border); padding: .1rem .35rem; }
.resource-category-nav + #hero { min-height: 62vh; padding-top: 70px; }
section[id], [id].resource-legacy-link { scroll-margin-top: 85px; }
@media (max-width: 900px) {
	.resource-category-nav { padding: 0 1.5rem; }
	.resource-category-inner { gap: 1.3rem; }
	.resource-category-nav + #hero { min-height: 0; padding-top: 55px; }
}
@media (max-width: 560px) {
	.resource-category-nav { padding: 0 1rem; }
	.resource-category-inner { gap: 0; justify-content: space-between; flex-wrap: wrap; }
	.resource-category-inner > a { min-height: 48px; font-size: .72rem; }
	.resource-category-inner > a:first-child { width: 100%; min-height: 38px; padding: .65rem 0 .3rem; border-bottom: 0; }
	.resource-category-status { font-size: .52rem; }
	body > footer { padding: 1.7rem 1.25rem; }
}
@media (prefers-reduced-motion: reduce) {
	html { scroll-behavior: auto; }
	.hero-tag, .hero-title, .hero-desc, .hero-actions { animation: none; }
}