:root {
  --bg: #0b1020;
  --surface: #121a33;
  --surface-2: #1a2547;
  --text: #e9edf7;
  --muted: #9aa6c4;
  --accent: #5b8cff;
  --accent-2: #8fd3ff;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 16px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Apple SD Gothic Neo", "Noto Sans KR", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 16, 32, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand svg {
  width: 28px;
  height: 28px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color 0.2s;
}

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

.lang-switch {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--text) !important;
  background: var(--surface);
}

/* Hero */
.hero {
  padding: 110px 0 90px;
  text-align: center;
  background:
    radial-gradient(600px 320px at 50% -10%, rgba(91, 140, 255, 0.22), transparent),
    radial-gradient(420px 260px at 80% 10%, rgba(143, 211, 255, 0.10), transparent);
}

.hero h1 {
  font-size: clamp(2.1rem, 5.5vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.hero h1 .accent {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  margin: 20px auto 0;
  max-width: 600px;
  color: var(--muted);
  font-size: 1.12rem;
}

.hero .cta {
  margin-top: 36px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 999px;
  font-size: 0.98rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn-primary {
  background: linear-gradient(90deg, var(--accent), #6f9dff);
  color: #fff;
  box-shadow: 0 8px 24px rgba(91, 140, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(91, 140, 255, 0.45);
}

/* Sections */
section {
  padding: 72px 0;
}

section h2 {
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

section .lede {
  color: var(--muted);
  max-width: 640px;
  margin-bottom: 40px;
}

/* Cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.card .icon {
  font-size: 1.6rem;
  margin-bottom: 14px;
}

.card h3 {
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.card p {
  color: var(--muted);
  font-size: 0.94rem;
}

/* About / company info */
.info-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.info-table th,
.info-table td {
  text-align: left;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.info-table tr:last-child th,
.info-table tr:last-child td {
  border-bottom: none;
}

.info-table th {
  color: var(--muted);
  font-weight: 600;
  width: 220px;
  background: var(--surface-2);
  white-space: nowrap;
}

/* Contact */
.contact-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 32px;
  text-align: center;
}

.contact-box p {
  color: var(--muted);
  max-width: 520px;
  margin: 0 auto 28px;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 36px 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}

footer .legal {
  margin-top: 6px;
}

@media (max-width: 640px) {
  .nav-links a:not(.lang-switch) {
    display: none;
  }

  .hero {
    padding: 80px 0 64px;
  }

  .info-table th {
    width: 130px;
  }
}