:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #5f6878;
  --line: #dce3ee;
  --paper: #ffffff;
  --wash: #f4f7fb;
  --accent: #2557d6;
  font-family: "Pretendard", "Noto Sans KR", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(180deg, #eef3fb 0, var(--wash) 18rem, var(--paper) 18rem);
  font-size: 16px;
  line-height: 1.75;
}

.shell {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 64px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 48px;
}

.brand {
  color: var(--ink);
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

nav { display: flex; gap: 18px; }
nav a, footer a { color: var(--muted); text-decoration: none; }
nav a:hover, footer a:hover { color: var(--accent); text-decoration: underline; }

main {
  padding: clamp(28px, 6vw, 56px);
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 18px 50px rgba(32, 52, 88, 0.08);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1, h2 { line-height: 1.3; letter-spacing: -0.035em; }
h1 { margin: 0 0 18px; font-size: clamp(2rem, 7vw, 3.25rem); }
h2 { margin: 36px 0 10px; font-size: 1.3rem; }
p, ul { margin: 0 0 18px; }
.lead { color: #3e485a; font-size: 1.1rem; }

.summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 34px 0;
}

.summary div {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #f9fbfe;
}

.summary strong { display: block; margin-bottom: 4px; font-size: 0.95rem; }
.summary span { color: var(--muted); font-size: 0.9rem; }

.notice {
  padding: 18px 20px;
  border-left: 4px solid var(--accent);
  background: #f2f6ff;
  border-radius: 4px 12px 12px 4px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 4px 0;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 620px) {
  header, footer { align-items: flex-start; flex-direction: column; }
  nav { flex-wrap: wrap; }
  .summary { grid-template-columns: 1fr; }
  main { border-radius: 16px; }
}