:root {
  --fg: #1a1a1a;
  --muted: #666;
  --accent: #2563eb;
  --bg: #fafafa;
  --card: #fff;
  --border: #e5e5e5;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--fg);
}

main {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem 2.5rem;
  min-width: 320px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.position {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.position code,
nav a,
.current {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

.position code {
  background: #eef;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
}

h1 {
  margin: 0 0 1.5rem;
  font-size: 1.8rem;
}

nav p {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

nav a {
  color: var(--accent);
  text-decoration: none;
  font-size: 1.05rem;
}

nav a:hover {
  text-decoration: underline;
}

.current {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--fg);
}

.current::after {
  content: " \2190 you are here";
  font-weight: 400;
  font-size: 0.85rem;
  color: var(--muted);
  font-family: system-ui, sans-serif;
}