:root {
  color-scheme: dark;
  --background: #0b1020;
  --surface: #111827;
  --text: #f9fafb;
  --muted: #9ca3af;
  --accent: #60a5fa;
  font-family: system-ui, sans-serif;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
}

header,
footer,
main {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem;
}

header {
  display: flex;
  gap: 1rem;
  justify-content: space-between;
}

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

nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

article {
  background: var(--surface);
  padding: 1.5rem;
  border-radius: 0.75rem;
}