:root {
  --bg: #ffffff;
  --text: #111111;
  --muted: #666666;
  --border: #e5e5e5;
}

* {
  box-sizing: border-box;
}

.intro {
  margin-top: 1.2rem;
  max-width: 42rem;
  font-size: 1.05rem;
  color: #333;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

.wrap {
  max-width: 720px;
  padding: 2rem 1.5rem;
  margin: 0 auto;
}

header h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.4rem);
}

.muted {
  color: var(--muted);
}

.card {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
}

h2 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--border);
}

a:hover {
  border-bottom-color: var(--text);
}

footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
}
header.wrap {
  padding-bottom: 2rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

header .muted {
  margin-bottom: 0;
}

.intro {
  margin: 1rem 0 0 0;
}

.links {
  margin-top: 1rem;
}