:root {
  color-scheme: light dark;
  --bg: #f7f7fa;
  --card-bg: #ffffff;
  --text: #1a1a1a;
  --muted: #666;
  --accent: #4f46e5;
  --border: #e4e4e9;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16161d;
    --card-bg: #1f1f29;
    --text: #f0f0f5;
    --muted: #a0a0ad;
    --border: #2c2c38;
  }
}

* {
  box-sizing: border-box;
}

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

.page {
  max-width: 560px;
  margin: 0 auto;
  padding: 4.5rem 1.25rem 3rem;
}

h1 {
  margin: 0 0 1.5rem;
}

h2 {
  font-size: 1rem;
  margin: 1.75rem 0 0.5rem;
}

p {
  line-height: 1.6;
  margin: 0 0 0.5rem;
}

.muted {
  color: var(--muted);
  font-size: 0.85rem;
}

.back-to-hub {
  position: fixed;
  top: 1.25rem;
  left: 1.25rem;
  z-index: 50;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card-bg);
  color: var(--text);
  font-size: 0.9rem;
  text-decoration: none;
}

.back-to-hub:hover {
  border-color: var(--accent);
}