:root {
  --paper: #f7f6f2;
  --ink: #1c1917;
  --muted: #57534e;
  --line: #e7e5e4;
  --accent: #0f4c5c;
}

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

html {
  color-scheme: light;
}

body {
  margin: 0;
  min-height: 100svh;
  background: var(--paper);
  color: var(--ink);
  font-family: "IBM Plex Sans KR", "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
}

.wrap {
  width: min(40rem, 100%);
  margin-inline: auto;
  padding-inline: 24px;
  padding-block: 1.5rem clamp(72px, 10vw, 140px) 4rem;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  font-weight: 600;
  letter-spacing: -0.02em;
  color: inherit;
  text-decoration: none;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  font-size: 0.9375rem;
}

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

nav a[aria-current="page"],
nav a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

main {
  padding-top: 2.5rem;
}

h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.25;
}

h1 + p.lede {
  margin: 0 0 2rem;
  color: var(--muted);
  font-size: 1.125rem;
}

h2 {
  margin: 2.5rem 0 0.75rem;
  font-size: 1.125rem;
}

p {
  margin: 0 0 1rem;
}

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

.cards {
  display: grid;
  gap: 1rem;
  margin: 0 0 2.5rem;
}

.card {
  display: block;
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: inherit;
  text-decoration: none;
}

.card:hover {
  border-color: var(--accent);
}

.card strong {
  display: block;
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.card span {
  color: var(--muted);
  font-size: 0.95rem;
}

footer {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.875rem;
}

@media (max-width: 480px) {
  header {
    flex-direction: column;
  }
}