:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --primary: #0c5972;
  --primary-dark: #033d52;
  --accent: #1b98d1;
  --accent-soft: #e5f3fb;
  --text: #112d3f;
  --muted: #5f7686;
  --border: #dce6ef;
  --navy-900: #0a1929;
  --navy-800: #0d2c47;
  --navy-700: #123a5c;
  --gold: #c9a227;
  --gold-dark: #6b530f;
  --gold-soft: #f5ecd2;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  color-scheme: light;
}

body {
  margin: 0;
  font-family: 'Noto Sans KR', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}

img {
  max-width: 100%;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 8px 18px rgba(17, 45, 63, 0.05);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--primary-dark);
  font-weight: 900;
  font-size: 1.05rem;
  text-decoration: none;
}

.brand-logo {
  width: 52px;
  height: 52px;
  display: block;
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  gap: 1.1rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--text);
  font-weight: 500;
}

.menu-toggle {
  display: none;
  border: 0;
  background: none;
  font-size: 1.2rem;
}

.hero {
  padding: 5.6rem 0 4.6rem;
  background: linear-gradient(160deg, var(--navy-900) 0%, var(--navy-800) 55%, var(--navy-700) 100%);
  color: #fff;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.75fr;
  gap: 2rem;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.55rem;
  font-size: 0.85rem;
}

h1, h2, h3 {
  line-height: 1.3;
}

h1 {
  font-size: clamp(2.25rem, 4vw, 3.4rem);
  letter-spacing: -0.01em;
  margin: 0.2rem 0 1rem;
}

.hero-copy {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.85);
  max-width: 620px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.6rem;
}

.hero-note {
  margin-top: 1rem;
  color: rgba(255, 255, 255, 0.75);
  font-size: 1rem;
  font-weight: 700;
}

.section-cases {
  background: #f5f9fd;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem;
}

.case-card {
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  box-shadow: 0 10px 26px rgba(10, 25, 41, 0.07);
}

.case-card-image {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
}

.case-card-body {
  padding: 1.4rem 1.6rem 1.6rem;
  border-top: 3px solid var(--gold);
}

.case-card h3 {
  margin-top: 0;
}

.case-card p {
  color: var(--muted);
}

.contact-box p {
  max-width: 720px;
}

.btn {
  display: inline-block;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #fff;
}

.btn-secondary {
  background: #fff;
  color: var(--primary-dark);
  border: 1px solid var(--border);
}

.hero-card, .card, .contact-box, .info-strip {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  box-shadow: 0 10px 26px rgba(10, 25, 41, 0.07);
}

.hero-card {
  padding: 1.8rem;
  min-height: 390px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-illustration-wrap {
  position: relative;
  border-radius: 0.65rem;
  overflow: hidden;
  margin-bottom: 1.2rem;
  border: 1px solid rgba(16, 80, 112, 0.08);
}

.hero-illustration-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(10, 25, 41, 0.55) 0%, rgba(18, 58, 92, 0.15) 100%);
}

.hero-illustration {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  filter: saturate(0.9) contrast(1.05);
}

.hero-card ul {
  padding-left: 1rem;
  margin: 0;
  color: var(--muted);
}

.hero-card h3 {
  margin-top: 0;
}

.section {
  padding: 4.5rem 0;
}

.program-note {
  margin-top: 1.2rem;
  padding: 1rem 1.2rem;
  background: #f8fdfb;
  border: 1px dashed var(--border);
  border-radius: 0.9rem;
  color: var(--muted);
}

.section-alt {
  background: #f2fbf9;
}

.section-feature {
  padding-top: 3rem;
  padding-bottom: 3rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.2rem;
}

.feature-card {
  padding: 1.4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--gold);
  border-radius: 0.75rem;
  box-shadow: 0 10px 24px rgba(10, 25, 41, 0.06);
}

.feature-card h3 {
  margin-top: 0;
}

.feature-card p {
  color: var(--muted);
}

.section-heading {
  margin-bottom: 1.5rem;
}

.section-heading::before {
  content: '';
  display: block;
  width: 46px;
  height: 3px;
  background: var(--gold);
  margin-bottom: 0.9rem;
}

.section-heading h2 {
  font-size: clamp(1.5rem, 2.4vw, 2.1rem);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.info-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.4rem 1.6rem;
  gap: 1rem;
}

.step-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.step-list div {
  background: var(--accent-soft);
  color: var(--primary-dark);
  border-radius: 999px;
  padding: 0.55rem 0.8rem;
  font-weight: 600;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.3rem;
}

.card {
  padding: 1.6rem;
  min-height: 210px;
}

.card h3 {
  margin-top: 0;
}

.card p {
  margin-bottom: 0;
}

.product-card {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.product-badge {
  display: inline-flex;
  align-self: flex-start;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  background: var(--gold-soft);
  color: var(--gold-dark);
  font-size: 0.82rem;
  font-weight: 700;
}

.pill-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.pill-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--gold);
  border-radius: 0.65rem;
  padding: 1.15rem 1.2rem;
  box-shadow: 0 8px 18px rgba(10, 25, 41, 0.05);
}

.pill-item strong {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--primary-dark);
}

.contact-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.8rem;
  gap: 1rem;
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.site-footer {
  padding: 1.5rem 0 2rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: 1rem;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-title {
  margin: 0 0 0.25rem;
  color: var(--primary-dark);
  font-weight: 800;
}

@media (max-width: 860px) {
  .hero-grid,
  .grid-2,
  .card-grid,
  .pill-list,
  .feature-grid,
  .case-grid {
    grid-template-columns: 1fr;
  }

  .contact-box,
  .info-strip {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 680px) {
  .menu-toggle {
    display: inline-block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 56px;
    right: 1rem;
    background: white;
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 0.8rem;
    flex-direction: column;
  }

  .site-nav.open {
    display: flex;
  }
}