@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --background: #f7f9f8;
  --surface: #ffffff;
  --surface-alt: #f0f4f2;
  --primary: #4b9b78;
  --primary-dark: #3d8264;
  --ink: #121a2b;
  --muted: #6b7280;
  --border: #e6eae7;
  --max: 1080px;
  --legal-max: 760px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--background);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary-dark); }
a:hover { color: var(--primary); }

/* Site chrome */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.site-header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-link img {
  width: 108px;
  height: 108px;
  border-radius: 10px;
}

.brand-name {
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.brand-tagline {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
  margin-top: 0.1rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav a {
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ink);
}

.site-nav a:hover { color: var(--primary); }

/* Service hero (Kakao-style detail page) */
.service-hero {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.service-hero-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3.5rem 1.5rem 3rem;
}

.eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 1rem;
}

.service-title {
  margin: 0 0 1.25rem;
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  max-width: 18ch;
}

.service-lead {
  margin: 0;
  font-size: 1.125rem;
  color: var(--muted);
  max-width: 52ch;
  line-height: 1.7;
}

.service-lead-mn {
  margin: 1rem 0 0;
  font-size: 0.9375rem;
  color: var(--muted);
  font-style: normal;
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.35rem;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.15s ease;
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.35rem;
  background: var(--surface);
  color: var(--ink);
  font-weight: 600;
  font-size: 0.9375rem;
  text-decoration: none;
  border-radius: 8px;
  border: 1px solid var(--border);
}

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

/* Feature sections */
.section-block {
  border-bottom: 1px solid var(--border);
}

.section-block.alt { background: var(--surface-alt); }

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3.5rem 1.5rem;
}

.section-heading {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-intro {
  margin: 0 0 2.5rem;
  color: var(--muted);
  max-width: 60ch;
  font-size: 1rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.feature-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.75rem;
}

.section-block.alt .feature-item {
  background: var(--surface);
}

.feature-index {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 0.75rem;
}

.feature-item h3 {
  margin: 0 0 0.65rem;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.feature-item p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--muted);
  line-height: 1.6;
}

/* Publisher strip */
.publisher-strip {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.publisher-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.publisher-inner p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--muted);
}

/* Legal / article pages */
.legal-main {
  max-width: var(--legal-max);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

.legal-main h1 {
  margin: 0 0 0.5rem;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.legal-meta {
  margin: 0 0 2.5rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.legal-main h2 {
  margin: 2.25rem 0 0.75rem;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ink);
  padding-top: 0.25rem;
  border-top: 1px solid var(--border);
}

.legal-main h2:first-of-type {
  border-top: none;
  margin-top: 0;
  padding-top: 0;
}

.legal-main p,
.legal-main li {
  margin: 0 0 1rem;
  color: #374151;
  font-size: 0.9375rem;
}

.legal-main ul {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

/* Forms */
.form-card {
  margin-top: 2rem;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

form label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  margin: 1.25rem 0 0.4rem;
  color: var(--ink);
}

form label:first-of-type { margin-top: 0; }

form input,
form textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  font-size: 0.9375rem;
  background: var(--background);
  color: var(--ink);
}

form input:focus,
form textarea:focus {
  outline: 2px solid rgba(75, 155, 120, 0.35);
  outline-offset: 1px;
  border-color: var(--primary);
}

form button[type="submit"] {
  margin-top: 1.5rem;
}

.status-note { font-size: 0.875rem; color: var(--muted); margin-top: 1rem; }
.status-success { color: var(--primary-dark); font-weight: 600; }
.status-error { color: #b42318; font-weight: 600; }

/* Footer */
.site-footer {
  background: var(--ink);
  color: #cbd5e1;
  margin-top: auto;
}

.site-footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
}

.footer-brand {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin: 0 0 0.5rem;
}

.footer-copy {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: #94a3b8;
}

.footer-col h4 {
  margin: 0 0 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #94a3b8;
}

.footer-col a {
  display: block;
  color: #e2e8f0;
  text-decoration: none;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.footer-col a:hover { color: #fff; }

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.5rem 1.5rem;
  font-size: 0.75rem;
  color: #64748b;
}

@media (max-width: 768px) {
  .site-nav { display: none; }
  .feature-grid { grid-template-columns: 1fr; }
  .site-footer-inner { grid-template-columns: 1fr; }
  .service-hero-inner { padding-top: 2.5rem; }
}