:root {
  color-scheme: light;
  --ink: #17212b;
  --muted: #576575;
  --paper: #f7faf9;
  --card: #ffffff;
  --line: #dce6e4;
  --accent: #118b91;
  --accent-dark: #096a70;
  --accent-soft: #e5f5f4;
  --shadow: 0 18px 50px rgba(23, 33, 43, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 0%, rgba(17, 139, 145, 0.12), transparent 31rem),
    var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  font-size: 17px;
  line-height: 1.72;
  word-break: keep-all;
}

a {
  color: var(--accent-dark);
  text-underline-offset: 0.2em;
}

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

a:focus-visible {
  border-radius: 4px;
  outline: 3px solid rgba(17, 139, 145, 0.35);
  outline-offset: 3px;
}

.site-header {
  border-bottom: 1px solid rgba(220, 230, 228, 0.8);
  background: rgba(247, 250, 249, 0.92);
}

.header-inner,
.footer-inner,
.page {
  width: min(100% - 40px, 920px);
  margin-inline: auto;
}

.header-inner {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 1.18rem;
  font-weight: 780;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.brand-mark {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: 11px;
  color: white;
  background: var(--accent);
  font-size: 0.95rem;
  letter-spacing: -0.08em;
}

nav {
  display: flex;
  gap: 18px;
  font-size: 0.92rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
}

.page {
  padding-block: 72px 88px;
}

.hero,
.document {
  padding: clamp(28px, 6vw, 60px);
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-dark);
  font-size: 0.83rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.32;
  letter-spacing: -0.035em;
}

h1 {
  margin: 0;
  font-size: clamp(2.15rem, 7vw, 4.5rem);
}

.document h1 {
  font-size: clamp(2rem, 6vw, 3.35rem);
}

h2 {
  margin: 2.8em 0 0.65em;
  padding-top: 0.2em;
  font-size: 1.38rem;
}

h3 {
  margin: 1.8em 0 0.45em;
  font-size: 1.08rem;
}

p,
ul {
  margin-block: 0.65em 1em;
}

ul {
  padding-left: 1.3em;
}

li + li {
  margin-top: 0.4em;
}

.lede {
  max-width: 660px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: clamp(1.07rem, 2.5vw, 1.28rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border: 1px solid var(--accent);
  border-radius: 14px;
  background: var(--accent);
  color: white;
  font-weight: 720;
  text-decoration: none;
}

.button:hover {
  color: white;
  background: var(--accent-dark);
}

.button.secondary {
  color: var(--accent-dark);
  background: white;
}

.button.secondary:hover {
  color: var(--accent-dark);
  background: var(--accent-soft);
}

.notice {
  margin: 30px 0;
  padding: 20px 22px;
  border-left: 5px solid var(--accent);
  border-radius: 4px 16px 16px 4px;
  background: var(--accent-soft);
}

.notice strong {
  display: block;
  margin-bottom: 4px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.info-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--card);
}

.info-card h2 {
  margin-top: 0;
  font-size: 1.18rem;
}

.meta {
  margin: 10px 0 30px;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  background: white;
  font-size: 0.88rem;
}

.footer-inner {
  display: flex;
  min-height: 88px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

@media (max-width: 680px) {
  body {
    font-size: 16px;
  }

  .header-inner,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-block: 16px;
  }

  nav {
    width: 100%;
  }

  .page {
    padding-block: 36px 54px;
  }

  .hero,
  .document {
    border-radius: 22px;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}

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