:root {
  --ink: #15181d;
  --body: #4e5561;
  --muted: #6d7480;
  --line: #e2e5e9;
  --surface: #ffffff;
  --surface-alt: #f5f7f7;
  --accent: #0d6b58;
  --accent-strong: #0a5546;
  --radius: 8px;
  --max-width: 1080px;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--body);
  font-family: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto,
    "Helvetica Neue", Arial, "Apple SD Gothic Neo", "Malgun Gothic",
    "Noto Sans KR", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  color: var(--ink);
  font-weight: 600;
  line-height: 1.25;
  margin: 0 0 16px;
}

h1 {
  font-size: 2.125rem;
  margin-bottom: 20px;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.0625rem;
  margin-bottom: 8px;
}

p {
  margin: 0 0 16px;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--accent);
}

a:hover {
  color: var(--accent-strong);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 52px 0;
}

.section-alt {
  background: var(--surface-alt);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-top: 18px;
  padding-bottom: 18px;
}

.brand {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--ink);
}

.brand-name {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.2;
}

.brand-sub {
  font-size: 0.8125rem;
  color: var(--muted);
  line-height: 1.3;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  font-size: 0.9375rem;
}

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

.site-nav a:hover {
  color: var(--accent-strong);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Hero */
.hero {
  padding-top: 56px;
  padding-bottom: 44px;
}

.lede {
  max-width: 54ch;
  font-size: 1.0625rem;
  color: var(--body);
  margin-bottom: 14px;
}

.legal-name {
  font-size: 0.9375rem;
  color: var(--muted);
  margin-bottom: 26px;
}

.updated {
  font-size: 0.9375rem;
  color: var(--muted);
  margin-bottom: 0;
}

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

.btn {
  display: inline-block;
  padding: 11px 20px;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent);
  color: #ffffff;
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
}

.btn:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: #ffffff;
}

.btn-secondary {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-secondary:hover {
  background: var(--surface-alt);
  border-color: #cfd4da;
  color: var(--ink);
}

/* About */
.prose {
  max-width: 62ch;
}

.info-list {
  margin: 28px 0 0;
  border-top: 1px solid var(--line);
}

.info-row {
  display: grid;
  gap: 2px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.info-row dt {
  font-size: 0.875rem;
  color: var(--muted);
}

.info-row dd {
  margin: 0;
  color: var(--ink);
}

/* Services */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

.card p {
  margin: 0;
  font-size: 0.9375rem;
}

.card .card-label {
  margin: 0 0 6px;
  font-size: 0.8125rem;
  color: var(--muted);
}

/* Contact */
.contact-email-wrap {
  margin: 20px 0 0;
}

.contact-email {
  display: inline-block;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.contact-email:hover {
  color: var(--accent-strong);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.back-link {
  margin-top: 26px;
  font-size: 0.9375rem;
}

/* Policy page */
.policy h2 {
  font-size: 1.25rem;
  margin-top: 40px;
  margin-bottom: 12px;
}

.policy h2:first-child {
  margin-top: 0;
}

.policy ul {
  margin: 0 0 16px;
  padding-left: 20px;
}

.policy li {
  margin-bottom: 6px;
}

.policy li:last-child {
  margin-bottom: 0;
}

/* Footer */
.site-footer {
  background: var(--surface-alt);
  border-top: 1px solid var(--line);
  padding: 36px 0 28px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.footer-name {
  margin: 0;
  color: var(--ink);
  font-weight: 600;
}

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

.footer-meta {
  margin: 6px 0 0;
  font-size: 0.875rem;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-size: 0.875rem;
}

.footer-links a {
  color: var(--body);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.footer-links a:hover {
  color: var(--accent-strong);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-bottom {
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 0.8125rem;
  color: var(--muted);
}

/* Desktop */
@media (min-width: 768px) {
  .container {
    padding: 0 32px;
  }

  .section {
    padding: 76px 0;
  }

  .hero {
    padding-top: 84px;
    padding-bottom: 56px;
  }

  h1 {
    font-size: 2.625rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .lede {
    font-size: 1.125rem;
  }

  .info-row {
    grid-template-columns: 200px 1fr;
    gap: 24px;
    align-items: baseline;
    padding: 15px 0;
  }

  .policy h2 {
    font-size: 1.375rem;
  }

  /* Auto-fitting columns: the grid absorbs any number of service cards
     without further CSS changes. */
  .card-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
  }

  .card {
    padding: 26px;
  }

  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
  }
}