:root {
  --primary: #16a34a;
  --primary-dark: #15803d;
  --primary-soft: #dcfce7;
  --dark: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --bg: #f8fafc;
  --white: #ffffff;
}

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

body {
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
}

.navbar {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 22px;
  font-weight: 900;
  color: var(--primary);
}

.logo span {
  color: var(--dark);
  font-weight: 800;
}

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-weight: 800;
  transition: 0.15s ease;
}

.nav-cta {
  padding: 10px 16px;
  background: var(--dark);
  color: var(--white);
  font-size: 14px;
}

.nav-cta:hover {
  background: var(--primary);
}

.section {
  padding: 88px 0;
}

.hero {
  background:
    radial-gradient(circle at top right, rgba(22, 163, 74, 0.14), transparent 42%),
    linear-gradient(180deg, #f0fdf4 0%, #ffffff 70%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}

.badge {
  display: inline-block;
  margin-bottom: 18px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 800;
}

.hero h1 {
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}

.hero h1 em {
  font-style: normal;
  color: var(--primary);
}

.lead {
  font-size: 18px;
  color: var(--muted);
  max-width: 34rem;
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-width: 148px;
  padding: 14px 20px;
  font-size: 15px;
}

.button-primary {
  background: var(--primary);
  color: var(--white);
}

.button-primary:hover {
  background: var(--primary-dark);
}

.button-secondary {
  background: var(--white);
  color: var(--dark);
  border: 1px solid var(--border);
}

.button-secondary:hover {
  border-color: var(--primary);
  color: var(--primary-dark);
}

.hero-note {
  margin-top: 16px;
  color: var(--muted);
  font-size: 14px;
}

.hero-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 28px;
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
}

.hero-card-badge {
  display: inline-block;
  margin-bottom: 14px;
  padding: 4px 10px;
  border-radius: 999px;
  background: #ecfdf5;
  color: var(--primary-dark);
  font-size: 12px;
  font-weight: 800;
}

.hero-card strong {
  display: block;
  font-size: 24px;
  margin-bottom: 8px;
}

.hero-card p span {
  color: var(--primary);
  font-weight: 900;
  font-size: 22px;
}

.hero-card-meta {
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
}

.section-title {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.section-subtitle {
  color: var(--muted);
  margin-bottom: 36px;
  font-size: 17px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 24px;
}

.feature-card h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

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

.step-list {
  list-style: none;
  display: grid;
  gap: 14px;
}

.step-list li {
  display: grid;
  gap: 6px;
  padding: 20px 22px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--white);
}

.step-list strong {
  font-size: 18px;
}

.step-list span {
  color: var(--muted);
}

.cta-band {
  background: #052e16;
  color: var(--white);
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.78);
  margin-top: 8px;
}

.cta-band .button-secondary {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.28);
}

.cta-band .button-secondary:hover {
  border-color: var(--white);
  color: var(--white);
}

.footer {
  padding: 36px 0 48px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer-inner {
  display: grid;
  gap: 14px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--muted);
  font-size: 14px;
}

.footer-copy {
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 860px) {
  .hero-grid,
  .card-grid,
  .cta-inner {
    grid-template-columns: 1fr;
    display: grid;
  }

  .section {
    padding: 64px 0;
  }

  .hero-card {
    order: -1;
  }
}