:root {
  --bg: #ffffff;
  --bg-muted: #f6f7f9;
  --ink: #111418;
  --ink-soft: #4a525c;
  --line: #e3e6ea;
  --accent: #1f3a5f;
  --accent-ink: #ffffff;
  --radius: 14px;
  --wrap: 1080px;
  --gutter: 24px;
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-size: 17px;
  line-height: 1.7;
  word-break: keep-all;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p { margin: 0; }
a { color: inherit; }

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 64px;
}
.wordmark {
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--accent);
}
.nav { display: flex; gap: 28px; margin-left: auto; }
.nav a {
  text-decoration: none;
  font-size: 15px;
  color: var(--ink-soft);
}
.nav a:hover { color: var(--ink); }
.lang { display: flex; align-items: center; gap: 4px; color: var(--line); }
.lang button {
  border: 0;
  background: none;
  padding: 6px 4px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  color: #9aa1a9;
  cursor: pointer;
}
.lang button[aria-pressed="true"] { color: var(--ink); }

/* Hero */
.hero { padding: 120px 0 112px; border-bottom: 1px solid var(--line); }
.eyebrow {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(36px, 6vw, 60px);
  line-height: 1.22;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.lead {
  max-width: 640px;
  margin-top: 28px;
  font-size: 19px;
  color: var(--ink-soft);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 40px; }
.btn {
  display: inline-block;
  padding: 13px 24px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--accent);
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: #172d4a; }
.btn-ghost { color: var(--accent); }
.btn-ghost:hover { background: var(--bg-muted); }

/* Sections */
.section { padding: 96px 0; }
.section-muted { background: var(--bg-muted); }
.section-title {
  font-size: clamp(26px, 3.4vw, 34px);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 40px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  padding: 32px 28px 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg);
}
.card-no {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 20px;
}
.card h3 { font-size: 21px; font-weight: 700; margin-bottom: 12px; }
.card p { color: var(--ink-soft); font-size: 16px; }

.points {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.point { border-top: 2px solid var(--accent); padding-top: 20px; }
.point h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.point p { color: var(--ink-soft); font-size: 16px; }

/* Contact */
.contact {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.contact .section-title { margin-bottom: 12px; }
.contact-text { color: var(--ink-soft); }
.contact-mail {
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 2px;
  overflow-wrap: anywhere;
}
.contact-mail:hover { opacity: 0.8; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 0 48px;
  font-size: 14px;
  color: var(--ink-soft);
}
.footer-name { font-weight: 700; color: var(--ink); margin-bottom: 10px; }
.footer-info { display: flex; flex-wrap: wrap; gap: 6px 28px; margin: 0 0 16px; }
.footer-info div { display: flex; gap: 8px; }
.footer-info dt { color: #8a929b; }
.footer-info dd { margin: 0; }
.footer-info a { text-decoration: none; }
.copyright { color: #8a929b; }

/* Responsive */
@media (max-width: 860px) {
  .cards, .points { grid-template-columns: 1fr; }
  .points { gap: 32px; }
}
@media (max-width: 640px) {
  :root { --gutter: 16px; }
  body { font-size: 16px; }
  .header-inner { gap: 16px; }
  .nav { display: none; }
  .lang { margin-left: auto; }
  .hero { padding: 72px 0 72px; }
  .lead { font-size: 17px; }
  .section { padding: 64px 0; }
  .section-title { margin-bottom: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}