:root {
  --ink: #18212b;
  --muted: #5f6d78;
  --line: #dfe6ea;
  --paper: #ffffff;
  --soft: #f5f8f9;
  --yellow: #fff2a8;
  --yellow-border: #e5c84b;
  --blue: #1769aa;
  --blue-dark: #104d7d;
  --shadow: 0 14px 34px rgba(24, 33, 43, .08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--soft);
  font-family: -apple-system, BlinkMacSystemFont, "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  line-height: 1.7;
  word-break: keep-all;
}
a { color: var(--blue); text-underline-offset: 3px; }
a:hover { color: var(--blue-dark); }

.site-header {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.header-inner, .container {
  width: min(100% - 32px, 920px);
  margin: 0 auto;
}
.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  color: var(--ink);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1.2;
}
.brand strong { display: block; font-size: 1.08rem; }
.brand small { display: block; color: var(--muted); font-size: .72rem; font-weight: 600; letter-spacing: .02em; }
.nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px; }
.nav a {
  padding: 6px 9px;
  color: var(--muted);
  font-size: .86rem;
  text-decoration: none;
  border-radius: 8px;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); background: var(--soft); }

main { padding: 54px 0 76px; }
.hero { margin-bottom: 28px; }
.eyebrow {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}
h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.35rem);
  line-height: 1.15;
  letter-spacing: -.06em;
}
.lede { max-width: 680px; margin: 16px 0 0; color: var(--muted); font-size: 1.05rem; }

.notice {
  margin: 24px 0;
  padding: 16px 18px;
  background: var(--yellow);
  border: 1px solid var(--yellow-border);
  border-radius: 12px;
  box-shadow: 0 5px 0 rgba(229, 200, 75, .18);
}
.notice strong { display: block; margin-bottom: 2px; }
.notice p { margin: 0; }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 30px; }
.card {
  display: flex;
  flex-direction: column;
  min-height: 190px;
  padding: 22px;
  color: var(--ink);
  text-decoration: none;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
}
.card:hover { border-color: #a9c9df; transform: translateY(-2px); transition: .18s ease; }
.card h2 { margin: 0 0 8px; font-size: 1.16rem; }
.card p { margin: 0; color: var(--muted); font-size: .92rem; }
.card .arrow { margin-top: auto; padding-top: 22px; color: var(--blue); font-weight: 800; font-size: .9rem; }

.prose {
  padding: 28px clamp(20px, 5vw, 42px);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}
.prose section + section { margin-top: 34px; }
.prose h2 { margin: 0 0 10px; font-size: 1.2rem; line-height: 1.35; }
.prose h3 { margin: 20px 0 6px; font-size: 1rem; }
.prose p { margin: 8px 0; }
.prose ul { margin: 8px 0 0; padding-left: 1.25rem; }
.prose li + li { margin-top: 5px; }
.meta { margin-top: 28px; color: var(--muted); font-size: .88rem; }
.callout { margin: 18px 0; padding: 14px 16px; background: #f1f7fb; border-left: 4px solid #6ba7cf; border-radius: 6px; }
.callout p { margin: 0; }

.site-footer {
  padding: 22px 0 30px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: .82rem;
}
.footer-inner { display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap; }
.footer-inner p { margin: 0; }

@media (max-width: 680px) {
  .header-inner { min-height: 66px; align-items: flex-start; padding: 14px 0; }
  .nav { gap: 2px; }
  .nav a { padding: 5px 6px; font-size: .78rem; }
  main { padding: 36px 0 54px; }
  .card-grid { grid-template-columns: 1fr; gap: 12px; }
  .card { min-height: 0; }
  .prose { padding: 22px 18px; }
  .prose section + section { margin-top: 28px; }
}