:root {
  --navy: #0d1f33;
  --navy-2: #16324e;
  --ink: #14283c;
  --muted: #5c7288;
  --line: #dfe9f2;
  --bg: #f7fafc;
  --card: #ffffff;
  --accent: #0e9f8a;
  --accent-2: #1e9bd7;
  --live: #0e9f6e;
  --prep: #b45309;
  --active: #1d6fb8;
  --radius: 20px;
  --shadow: 0 20px 50px -22px rgba(13, 31, 51, 0.25);
}

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

body {
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont,
    system-ui, "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  word-break: keep-all;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

.container { width: min(1080px, calc(100% - 44px)); margin: 0 auto; }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header .container {
  display: flex; align-items: center; gap: 28px; height: 66px;
}
.logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 850; font-size: 18px; letter-spacing: -0.02em;
}
.logo .mark {
  width: 32px; height: 32px; border-radius: 9px; flex: none;
  background: var(--accent);
  display: grid; place-items: center;
}
.logo .mark svg { width: 19px; height: 19px; }
.logo .ai { color: var(--accent); }
.site-nav {
  margin-left: auto; display: flex; gap: 22px;
  font-size: 14.5px; font-weight: 600; color: var(--muted);
}
.site-nav a:hover { color: var(--navy); }
.site-nav a.on { color: var(--accent); }
@media (max-width: 720px) { .site-nav { display: none; } }

/* ---------- hero ---------- */
.hub-hero {
  position: relative; overflow: hidden; text-align: center;
  padding: 92px 0 84px;
  background:
    radial-gradient(680px 340px at 18% -10%, rgba(30, 155, 215, 0.16), transparent 70%),
    radial-gradient(600px 320px at 85% 0%, rgba(14, 159, 138, 0.14), transparent 70%),
    linear-gradient(180deg, #ffffff, var(--bg));
}
.eyebrow {
  display: inline-block; font-size: 13.5px; font-weight: 800;
  color: var(--accent); background: rgba(14, 159, 138, 0.09);
  border: 1px solid rgba(14, 159, 138, 0.22);
  padding: 7px 16px; border-radius: 999px; margin-bottom: 20px;
  letter-spacing: 0.02em;
}
.hub-hero h1 {
  font-size: clamp(30px, 4.6vw, 46px); font-weight: 850;
  letter-spacing: -0.03em; line-height: 1.28; color: var(--navy);
}
.hub-hero h1 .accent { color: var(--accent); }
.hub-hero p {
  margin: 18px auto 0; max-width: 40em;
  color: var(--muted); font-size: clamp(15px, 1.6vw, 17.5px);
}

/* ---------- gateway ---------- */
.gateway { padding: 20px 0 96px; }
.gateway-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.gate-card {
  display: flex; flex-direction: column; gap: 12px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px 26px;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.gate-card:hover {
  transform: translateY(-6px); box-shadow: var(--shadow);
  border-color: #c8dcec;
}
.gate-top { display: flex; align-items: center; justify-content: space-between; }
.gate-icon {
  width: 50px; height: 50px; border-radius: 14px;
  background: linear-gradient(135deg, rgba(30, 155, 215, 0.1), rgba(14, 159, 138, 0.1));
  display: grid; place-items: center;
}
.gate-icon svg { width: 26px; height: 26px; }
.gate-badge {
  font-size: 12px; font-weight: 800; padding: 5px 12px; border-radius: 999px;
}
.gate-badge.live { background: rgba(14, 159, 110, 0.1); color: var(--live); }
.gate-badge.prep { background: rgba(180, 83, 9, 0.09); color: var(--prep); }
.gate-badge.active { background: rgba(29, 111, 184, 0.1); color: var(--active); }
.gate-card h2 { font-size: 19.5px; font-weight: 800; letter-spacing: -0.01em; color: var(--navy); }
.gate-card > p { font-size: 14.5px; color: var(--muted); flex: 1; }
.gate-sub {
  font-size: 12.5px; font-weight: 600; color: var(--navy-2);
  background: var(--bg); border: 1px solid var(--line);
  padding: 6px 10px; border-radius: 10px;
}
.gate-go {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 14px; font-weight: 800; color: var(--accent);
}
.gate-card:hover .gate-go { gap: 11px; }
.gate-go svg { transition: transform 0.2s; }
.gate-ext { font-size: 12px; color: var(--muted); font-weight: 600; margin-left: -2px; }
@media (max-width: 860px) { .gateway-grid { grid-template-columns: 1fr; } }

/* ---------- sub page (준비중 — 이전 레이아웃, 호환용) ---------- */
.sub-hero {
  text-align: center; padding: 96px 0 40px;
  background: linear-gradient(180deg, #ffffff, var(--bg));
}
.sub-hero .badge-prep {
  display: inline-block; font-size: 13px; font-weight: 800;
  color: var(--prep); background: rgba(180, 83, 9, 0.09);
  padding: 7px 16px; border-radius: 999px; margin-bottom: 18px;
}
.sub-hero h1 { font-size: clamp(28px, 4vw, 40px); font-weight: 850; letter-spacing: -0.025em; color: var(--navy); }
.sub-body { padding: 8px 0 90px; }
.sub-card {
  max-width: 660px; margin: 0 auto; text-align: center;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 44px 36px;
  box-shadow: 0 14px 40px -24px rgba(13, 31, 51, 0.2);
}
.sub-card p { color: var(--muted); font-size: 16px; }
.sub-card p + p { margin-top: 12px; }
.back-home {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 28px;
  font-weight: 800; font-size: 15px; color: #fff;
  background: var(--accent);
  padding: 13px 26px; border-radius: 14px;
  box-shadow: 0 14px 30px -12px rgba(14, 159, 138, 0.5);
  transition: transform 0.2s;
}
.back-home:hover { transform: translateY(-2px); }

/* ---------- content page: hero ---------- */
.page-hero {
  padding: 72px 0 44px;
  background:
    radial-gradient(680px 340px at 10% -10%, rgba(30, 155, 215, 0.14), transparent 70%),
    linear-gradient(180deg, #ffffff, var(--bg));
}
.page-hero .badge-prep,
.page-hero .badge-active,
.page-hero .badge-live {
  display: inline-block; font-size: 13px; font-weight: 800;
  padding: 7px 16px; border-radius: 999px; margin-bottom: 18px;
}
.page-hero .badge-prep { color: var(--prep); background: rgba(180, 83, 9, 0.09); }
.page-hero .badge-active { color: var(--active); background: rgba(29, 111, 184, 0.1); }
.page-hero .badge-live { color: var(--live); background: rgba(14, 159, 110, 0.1); }
.page-hero h1 {
  font-size: clamp(28px, 4vw, 40px); font-weight: 850;
  letter-spacing: -0.025em; color: var(--navy); line-height: 1.25;
}
.page-hero h1 .thin { font-weight: 500; color: var(--muted); }
.page-hero .lede {
  margin-top: 16px; max-width: 46em;
  color: var(--muted); font-size: clamp(15px, 1.5vw, 17px);
}
.page-hero .lede b { color: var(--ink); font-weight: 700; }
.stat-row {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
  margin-top: 30px;
}
.stat {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 16px 18px;
}
.stat b { display: block; font-size: 24px; font-weight: 850; letter-spacing: -0.02em; color: var(--navy); line-height: 1.2; }
.stat span { display: block; font-size: 13px; color: var(--muted); margin-top: 4px; }
@media (max-width: 720px) { .stat-row { grid-template-columns: 1fr; } }

/* ---------- content page: work sections ---------- */
.work { padding: 56px 0; }
.work.alt { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.work-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 10px; }
.work-no {
  font-size: 12.5px; font-weight: 800; letter-spacing: 0.06em; color: var(--accent);
  text-transform: uppercase;
}
.work-tag {
  font-size: 12px; font-weight: 800; padding: 4px 11px; border-radius: 999px;
}
.work-tag.done { background: rgba(14, 159, 110, 0.1); color: var(--live); }
.work-tag.prep { background: rgba(180, 83, 9, 0.09); color: var(--prep); }
.work-tag.active { background: rgba(29, 111, 184, 0.1); color: var(--active); }
.work h2 {
  font-size: clamp(22px, 2.8vw, 28px); font-weight: 850;
  letter-spacing: -0.02em; color: var(--navy); line-height: 1.3;
}
.work-sub { margin-top: 8px; color: var(--muted); font-size: 15px; }
.work-h3 {
  margin: 34px 0 14px; font-size: 17px; font-weight: 800; color: var(--navy);
  padding-left: 12px; border-left: 3px solid var(--accent);
}

.kv {
  margin-top: 22px; display: grid; gap: 0;
  background: var(--card); border: 1px solid var(--line); border-radius: 16px; overflow: hidden;
}
.kv > div {
  display: grid; grid-template-columns: 130px 1fr; gap: 12px;
  padding: 13px 18px; border-bottom: 1px solid var(--line); font-size: 14.5px;
}
.kv > div:last-child { border-bottom: 0; }
.kv dt { font-weight: 800; color: var(--navy-2); }
.kv dd { color: var(--ink); }
.kv dd b { font-weight: 700; }
.kv dd a { color: var(--accent); font-weight: 700; text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 600px) { .kv > div { grid-template-columns: 1fr; gap: 3px; } }

.work-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.work-grid.four { grid-template-columns: repeat(4, 1fr); }
.work-card {
  position: relative; background: var(--card); border: 1px solid var(--line);
  border-radius: 16px; padding: 22px 22px 20px;
}
.work-card .wc-no {
  display: inline-block; font-size: 12px; font-weight: 800; color: var(--accent);
  background: rgba(14, 159, 138, 0.09); padding: 3px 9px; border-radius: 8px; margin-bottom: 10px;
}
.work-card h4 { font-size: 16px; font-weight: 800; color: var(--navy); margin-bottom: 6px; }
.work-card p { font-size: 14px; color: var(--muted); }
.work-card.mini > b { display: block; font-size: 20px; font-weight: 850; color: var(--navy); letter-spacing: -0.02em; margin-bottom: 6px; }
@media (max-width: 860px) { .work-grid, .work-grid.four { grid-template-columns: 1fr; } }

.steps { list-style: none; display: grid; gap: 8px; }
.steps li {
  display: grid; grid-template-columns: 74px 1fr; gap: 12px; align-items: center;
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 11px 16px; font-size: 14.5px;
}
.steps li b { color: var(--accent); font-weight: 800; }
.steps li span { color: var(--ink); }
@media (max-width: 600px) { .steps li { grid-template-columns: 1fr; gap: 2px; } }

.path { margin-top: 8px; }
.path-row {
  display: flex; align-items: stretch; gap: 8px; flex-wrap: wrap;
}
.path-row > span {
  flex: 1 1 180px; display: flex; flex-direction: column; justify-content: center;
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 12px 14px; font-size: 14px; font-weight: 700; color: var(--navy);
}
.path-row > span small { font-weight: 500; color: var(--muted); font-size: 12.5px; margin-top: 2px; }
.path-row > i { align-self: center; font-style: normal; color: var(--muted); font-weight: 800; }
@media (max-width: 720px) { .path-row > i { display: none; } }

.note { margin-top: 18px; font-size: 13px; color: var(--muted); }
.note a { color: var(--accent); font-weight: 700; text-decoration: underline; text-underline-offset: 3px; }

/* ---------- cta band ---------- */
.cta-band { padding: 56px 0 72px; text-align: center; }
.cta-band p { font-size: 17px; font-weight: 700; color: var(--navy); }
.cta-actions { display: flex; justify-content: center; gap: 12px; flex-wrap: wrap; margin-top: 20px; }
.btn-primary, .btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 800; font-size: 15px; padding: 13px 24px; border-radius: 14px;
  transition: transform 0.2s;
}
.btn-primary { color: #fff; background: var(--accent); box-shadow: 0 14px 30px -12px rgba(14, 159, 138, 0.5); }
.btn-ghost { color: var(--navy); background: var(--card); border: 1px solid var(--line); }
.btn-primary:hover, .btn-ghost:hover { transform: translateY(-2px); }

/* ---------- footer ---------- */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--line); background: #fff;
  padding: 34px 0 40px; font-size: 13.5px; color: var(--muted);
}
.site-footer .container { display: flex; flex-direction: column; gap: 8px; }
.corp { display: flex; flex-wrap: wrap; gap: 8px 22px; }
.corp b { color: var(--ink); }
.corp a:hover { color: var(--navy); text-decoration: underline; }