:root{
	--maxw: 1120px;

	/* Personal color: Blue */
	--brand: #1e63ff;
	--brand2: #0ea5ff;

	--bg: #0b1020;         /* 단색 베이스 */
	--panel: rgba(255,255,255,.06);
	--panel2: rgba(255,255,255,.08);

	--fg: rgba(255,255,255,.92);
	--muted: rgba(255,255,255,.72);
	--muted2: rgba(255,255,255,.56);
	--border: rgba(255,255,255,.12);

	--radius: 18px;
	--radius2: 24px;

	--shadow: 0 12px 40px rgba(0,0,0,.35);

	--pad: 24px;
	--gap: 18px;

	--header-h: 72px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
	margin:0;
	font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Apple SD Gothic Neo, Noto Sans KR, "Malgun Gothic", Arial, sans-serif;
	background: var(--bg);
	color: var(--fg);
	line-height: 1.6;
}

img{ max-width:100%; display:block; }
a{ color: inherit; text-decoration:none; }
button{ font: inherit; }

.skip{
	position:absolute;
	left:-9999px;
	top:0;
	background:#fff;
	color:#000;
	padding:10px 12px;
	z-index:9999;
}
.skip:focus{ left:10px; top:10px; border-radius:10px; }

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

/* Header */
.header{
	position: sticky;
	top: 0;
	z-index: 50;
	background: rgba(11,16,32,.72);
	backdrop-filter: blur(14px);
	border-bottom: 1px solid var(--border);
}
.header-inner{
	height: var(--header-h);
	display:flex;
	align-items:center;
	justify-content:space-between;
	gap: 16px;
}

.brand{
	display:flex;
	align-items:center;
	gap: 12px;
	min-width: 200px;
}
.brand-mark{
	width: 38px;
	height: 38px;
	border-radius: 12px;
	box-shadow: 0 10px 24px rgba(30,99,255,.25);
}
.brand-text{ display:flex; flex-direction:column; line-height:1.1; }
.brand-title{ font-weight: 800; letter-spacing: -0.02em; }
.brand-sub{ font-size: 12px; color: var(--muted2); margin-top: 2px; }

.nav{
	display:flex;
	align-items:center;
	gap: 18px;
}
.nav a{
	font-size: 14px;
	color: var(--muted);
	padding: 10px 10px;
	border-radius: 12px;
}
.nav a:hover{
	background: rgba(255,255,255,.06);
	color: var(--fg);
}

.nav-toggle{
	display:none;
	width: 44px;
	height: 44px;
	border: 1px solid var(--border);
	background: rgba(255,255,255,.04);
	border-radius: 14px;
	padding: 10px;
	cursor:pointer;
}
.nav-toggle span{
	display:block;
	height: 2px;
	background: rgba(255,255,255,.82);
	border-radius: 99px;
	margin: 5px 0;
}

/* Hero */
.hero{
	position: relative;
	min-height: calc(100svh - var(--header-h));
	display:flex;
}
.hero-media{
	position: relative;
	width: 100%;
	min-height: calc(100svh - var(--header-h));
	overflow:hidden;
}
.hero-slide{
	position:absolute;
	inset:0;
	background-size: cover;
	background-position: center;
	transform: scale(1.03);
	opacity: 0;
	transition: opacity 700ms ease;
}
.hero-slide.is-active{ opacity: 1; }

.hero-overlay{
	position:absolute;
	inset:0;
	background:
		radial-gradient(900px 380px at 22% 30%, rgba(30,99,255,.35), transparent 60%),
		radial-gradient(760px 420px at 78% 35%, rgba(14,165,255,.22), transparent 60%),
		linear-gradient(to bottom, rgba(11,16,32,.35), rgba(11,16,32,.92));
}

.hero-content{
	position: relative;
	padding: clamp(56px, 8vw, 92px) 0;
	display:flex;
	flex-direction:column;
	justify-content:center;
	min-height: calc(100svh - var(--header-h));
}

.chip{
	display:inline-flex;
	align-items:center;
	gap: 8px;
	width: fit-content;
	padding: 8px 12px;
	border: 1px solid rgba(255,255,255,.14);
	background: rgba(255,255,255,.06);
	border-radius: 999px;
	color: var(--muted);
	font-size: 13px;
}

.hero-title{
	margin: 14px 0 0 0;
	font-size: clamp(34px, 4.6vw, 58px);
	line-height: 1.08;
	letter-spacing: -0.04em;
}
.hero-desc{
	margin: 14px 0 0 0;
	max-width: 720px;
	color: var(--muted);
	font-size: 16px;
}

.hero-cta{
	margin-top: 20px;
	display:flex;
	gap: 12px;
	flex-wrap: wrap;
}

.hero-dots{
	margin-top: 22px;
	display:flex;
	gap: 10px;
}
.hero-dot{
	width: 9px;
	height: 9px;
	border-radius: 999px;
	border: 1px solid rgba(255,255,255,.25);
	background: rgba(255,255,255,.10);
	cursor:pointer;
}
.hero-dot.is-active{
	background: linear-gradient(135deg, var(--brand), var(--brand2));
	border-color: rgba(255,255,255,.22);
}

/* Buttons */
.btn{
	display:inline-flex;
	align-items:center;
	justify-content:center;
	gap: 10px;
	padding: 12px 16px;
	border-radius: 14px;
	border: 1px solid var(--border);
	background: rgba(255,255,255,.06);
	color: var(--fg);
	cursor:pointer;
	box-shadow: 0 10px 24px rgba(0,0,0,.18);
}
.btn:hover{ transform: translateY(-1px); }
.btn.primary{
	border-color: rgba(30,99,255,.35);
	background: linear-gradient(135deg, rgba(30,99,255,.95), rgba(14,165,255,.88));
}
.btn.ghost{
	background: rgba(255,255,255,.04);
}
.btn.small{ padding: 10px 14px; border-radius: 14px; }

/* Sections */
.section{
	padding: clamp(54px, 6vw, 86px) 0;
}
.section.alt{
	background: rgba(255,255,255,.03);
	border-top: 1px solid rgba(255,255,255,.06);
	border-bottom: 1px solid rgba(255,255,255,.06);
}

.section-head{
	margin-bottom: 22px;
}
.section-title{
	margin:0;
	font-size: clamp(24px, 3vw, 34px);
	letter-spacing: -0.03em;
}
.section-desc{
	margin: 8px 0 0 0;
	color: var(--muted);
	max-width: 760px;
}

.split{
	display:grid;
	grid-template-columns: 1.05fr 1fr;
	gap: clamp(16px, 3vw, 24px);
	align-items: stretch;
}
.split-media{
	border-radius: var(--radius2);
	overflow:hidden;
	border: 1px solid var(--border);
	background: rgba(255,255,255,.04);
	box-shadow: var(--shadow);
}
.split-media img{
	width: 100%;
	height: 100%;
	object-fit: cover;
	min-height: 360px;
}

.grid-eq{
	display:grid;
	gap: var(--gap);
	align-items: stretch;
}
.grid-2{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4{ grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card{
	border: 1px solid var(--border);
	background: rgba(255,255,255,.05);
	border-radius: var(--radius2);
	padding: 18px 18px;
	box-shadow: 0 10px 30px rgba(0,0,0,.18);
	display:flex;
	flex-direction:column;
	min-height: 100%;
}
.card-title{
	margin: 0;
	font-size: 16px;
	letter-spacing: -0.02em;
}
.card-text{
	margin: 10px 0 0 0;
	color: var(--muted);
	font-size: 14px;
}

.project .card-media{
	border-radius: 18px;
	overflow:hidden;
	border: 1px solid rgba(255,255,255,.10);
	background: rgba(255,255,255,.04);
}
.project .card-media img{
	width: 100%;
	height: 160px;
	object-fit: cover;
}
.project .card-body{
	margin-top: 12px;
	display:flex;
	flex-direction:column;
	flex: 1;
}
.tags{
	list-style:none;
	padding:0;
	margin: 12px 0 0 0;
	display:flex;
	gap: 8px;
	flex-wrap: wrap;
}
.tags li{
	font-size: 12px;
	color: rgba(255,255,255,.78);
	border: 1px solid rgba(255,255,255,.14);
	background: rgba(255,255,255,.06);
	padding: 6px 10px;
	border-radius: 999px;
}

.bullets{
	margin: 10px 0 0 18px;
	padding:0;
	color: var(--muted);
	font-size: 14px;
}
.bullets li{ margin: 6px 0; }

.banner{
	margin-top: 18px;
	position: relative;
	border-radius: var(--radius2);
	overflow:hidden;
	border: 1px solid var(--border);
	background: rgba(255,255,255,.04);
	box-shadow: var(--shadow);
	min-height: 220px;
}
.banner img{
	position:absolute;
	inset:0;
	width:100%;
	height:100%;
	object-fit: cover;
	opacity: .85;
}
.banner-text{
	position:relative;
	padding: 18px 18px;
	max-width: 620px;
}
.banner-text h3{
	margin: 0;
	font-size: 18px;
	letter-spacing: -0.02em;
}
.banner-text p{
	margin: 8px 0 0 0;
	color: var(--muted);
}

.note{
	margin-top: 14px;
	color: var(--muted2);
	font-size: 13px;
}

.contact-actions{
	margin-top: 14px;
	display:flex;
	gap: 12px;
	flex-wrap: wrap;
}
.small{ font-size: 12px; }
.muted{ color: var(--muted2); }

/* To top */
.to-top{
	position: fixed;
	right: 18px;
	bottom: 18px;
	width: 46px;
	height: 46px;
	border-radius: 16px;
	border: 1px solid rgba(255,255,255,.14);
	background: rgba(255,255,255,.06);
	color: rgba(255,255,255,.9);
	cursor:pointer;
	display:grid;
	place-items:center;
	box-shadow: 0 14px 36px rgba(0,0,0,.35);
	opacity: 0;
	transform: translateY(10px);
	pointer-events: none;
	transition: opacity 180ms ease, transform 180ms ease;
}
.to-top.is-show{
	opacity: 1;
	transform: translateY(0);
	pointer-events: auto;
}

/* Footer */
.footer{
	border-top: 1px solid rgba(255,255,255,.08);
	background: rgba(0,0,0,.18);
}
.footer-inner{
	padding: 26px 0;
	display:grid;
	grid-template-columns: 1.1fr 2fr 1fr;
	gap: 18px;
	align-items: start;
}
.footer-brand{
	display:flex;
	align-items:center;
	gap: 12px;
}
.footer-logo{
	width: 38px;
	height: 38px;
	border-radius: 12px;
}
.footer-title{ font-weight: 800; letter-spacing: -0.02em; }
.footer-sub{ color: var(--muted2); font-size: 12px; margin-top: 2px; }

.footer-label{
	font-size: 13px;
	color: rgba(255,255,255,.86);
	margin-bottom: 10px;
}
.footer-list{
	list-style:none;
	padding:0;
	margin:0;
	display:flex;
	flex-direction:column;
	gap: 8px;
}
.footer-list li{
	display:flex;
	gap: 10px;
	color: var(--muted);
	font-size: 13px;
	line-height: 1.45;
}
.footer-list .k{
	min-width: 98px;
	color: rgba(255,255,255,.82);
}
.footer-list .v{
	color: var(--muted);
}

.footer-links{
	list-style:none;
	padding:0;
	margin:0;
	display:flex;
	flex-direction:column;
	gap: 8px;
}
.footer-links a{
	color: var(--muted);
	font-size: 13px;
	padding: 6px 8px;
	border-radius: 10px;
}
.footer-links a:hover{
	background: rgba(255,255,255,.06);
	color: var(--fg);
}

.footer-bottom{
	border-top: 1px solid rgba(255,255,255,.08);
	padding: 14px 0;
}
copyright, .copyright{
	text-align:center;
	color: var(--muted2);
	font-size: 12px;
}

/* Responsive */
@media (max-width: 980px){
	.split{ grid-template-columns: 1fr; }
	.split-media img{ min-height: 280px; }
	.grid-4{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.grid-3{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
	.footer-inner{ grid-template-columns: 1fr; }
	.footer-list li{ flex-direction:column; gap: 2px; }
	.footer-list .k{ min-width: auto; }
}

@media (max-width: 720px){
	.nav-toggle{ display:block; }
	.nav{
		position:absolute;
		left: 20px;
		right: 20px;
		top: calc(var(--header-h) - 4px);
		background: rgba(11,16,32,.92);
		border: 1px solid rgba(255,255,255,.12);
		border-radius: 18px;
		padding: 10px;
		display:none;
		flex-direction:column;
		gap: 6px;
		box-shadow: var(--shadow);
	}
	.nav.is-open{ display:flex; }

	.grid-2{ grid-template-columns: 1fr; }
	.grid-3{ grid-template-columns: 1fr; }
	.grid-4{ grid-template-columns: 1fr; }
}