:root {
  --bg: #fbfbf8;
  --fg: #1d1d1b;
  --muted: #5f5f5a;
  --accent: #2f5d50;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615;
    --fg: #ecece6;
    --muted: #a3a39c;
    --accent: #8fc9b5;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

main {
  max-width: 40rem;
  margin: 12vh auto;
  padding: 0 16px;
}

h1 { font-size: 1.6rem; margin: 0 0 1rem; }

.stamp {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  color: var(--accent);
}

.note { color: var(--muted); font-size: 0.9rem; }