:root {
  --bg: #ffffff;
  --bg-alt: #f5f6fa;
  --fg: #14161f;
  --muted: #5b6070;
  --line: #e3e5ec;
  --accent: #5b4bff;
  --accent-2: #ff4f8b;
  --card: #ffffff;
  --radius: 16px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1117;
    --bg-alt: #161923;
    --fg: #eef0f6;
    --muted: #9aa0b2;
    --line: #262a37;
    --accent: #8a7dff;
    --accent-2: #ff6fa1;
    --card: #1b1f2b;
  }
}
:root[data-theme="dark"] {
  --bg: #0f1117;
  --bg-alt: #161923;
  --fg: #eef0f6;
  --muted: #9aa0b2;
  --line: #262a37;
  --accent: #8a7dff;
  --accent-2: #ff6fa1;
  --card: #1b1f2b;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Noto Sans KR", system-ui, -apple-system, "Apple SD Gothic Neo", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { display: block; }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
.en { color: var(--muted); font-size: 0.95em; }
.en-inline { color: var(--muted); font-weight: 400; font-size: 0.6em; margin-left: 0.4em; letter-spacing: 0.02em; }
.muted { color: var(--muted); }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 800; text-decoration: none; font-size: 1.1rem; }
.nav nav { display: flex; gap: 20px; }
.nav nav a { text-decoration: none; color: var(--muted); font-size: 0.95rem; }
.nav nav a:hover { color: var(--fg); }

/* Hero */
.hero { padding: 112px 0 96px; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: -40% -10% auto auto; width: 520px; height: 520px;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 35%, transparent), transparent 70%);
  pointer-events: none;
}
.eyebrow { color: var(--accent); font-weight: 600; margin: 0 0 12px; letter-spacing: 0.04em; }
.hero h1 { font-size: clamp(2.2rem, 6vw, 3.8rem); line-height: 1.2; margin: 0 0 16px; font-weight: 800; letter-spacing: -0.02em; }
.lead { font-size: 1.15rem; margin: 0 0 32px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; padding: 12px 22px; border-radius: 999px;
  text-decoration: none; font-weight: 600; border: 1px solid transparent;
}
.btn .en-inline { font-size: 0.8em; }
.btn.primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; }
.btn.primary .en-inline { color: rgba(255,255,255,0.8); }
.btn.ghost { border-color: var(--line); }
.btn.ghost:hover { border-color: var(--accent); }

/* Sections */
.section { padding: 88px 0; }
.section.alt { background: var(--bg-alt); }
.section h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); margin: 0 0 24px; font-weight: 800; letter-spacing: -0.01em; }
.two-col { display: grid; grid-template-columns: 1fr 2fr; gap: 32px; }
.two-col p { margin: 0 0 12px; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; display: flex; flex-direction: column;
}
.card-tag {
  align-self: flex-start; font-size: 0.75rem; font-weight: 600; color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  padding: 4px 10px; border-radius: 999px; margin-bottom: 16px;
}
.card h3 { margin: 0; font-size: 1.4rem; font-weight: 800; }
.card .name-en { margin: 0 0 16px; font-weight: 600; }
.card p { margin: 0 0 8px; }
.card-btn { margin-top: 16px; align-self: flex-start; }
.card-link { margin-top: auto; padding-top: 16px; color: var(--accent); font-weight: 600; text-decoration: none; }
.card-link:hover { text-decoration: underline; }

/* MOU */
.mou-list { list-style: none; padding: 0; margin: 32px 0 0; border-top: 1px solid var(--line); }
.mou-list li {
  display: grid; grid-template-columns: 110px 1fr 1.4fr; gap: 16px; align-items: baseline;
  padding: 18px 0; border-bottom: 1px solid var(--line);
}
.mou-date { color: var(--muted); font-variant-numeric: tabular-nums; }
.mou-name { font-weight: 600; }
.mou-name .en-inline { font-size: 0.85em; }
.mou-desc { color: var(--muted); }

.contact-mail { font-size: 1.2rem; font-weight: 600; margin-top: 16px; }
.contact-mail a { color: var(--accent); text-decoration: none; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 48px 0 40px; font-size: 0.875rem; color: var(--muted); }
.footer-brand { color: var(--fg); font-weight: 800; margin: 0 0 16px; }
.biz { display: flex; flex-wrap: wrap; gap: 6px 24px; margin: 0 0 24px; }
.biz div { display: flex; gap: 8px; }
.biz dt { font-weight: 600; }
.biz dt .en-inline { font-size: 0.85em; }
.biz dd { margin: 0; }
.biz div:has(dd:empty) { display: none; }
.copy { margin: 0; }

@media (max-width: 720px) {
  .nav nav { gap: 14px; }
  .nav nav a { font-size: 0.85rem; }
  .hero { padding: 72px 0 64px; }
  .section { padding: 64px 0; }
  .two-col, .cards { grid-template-columns: 1fr; gap: 16px; }
  .mou-list li { grid-template-columns: 1fr; gap: 2px; }
  .biz { flex-direction: column; }
}
@media (max-width: 420px) {
  .brand span { display: none; }
}