:root {
  color-scheme: light dark;
  --fg: #111;
  --fg-muted: #555;
  --bg: #fff;
  --accent: #2350ff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e8e8e8;
    --fg-muted: #9a9a9a;
    --bg: #0e0e10;
    --accent: #8aa8ff;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.55;
}

main {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 24px 96px;
}

h1 {
  font-size: 2.25rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.25rem;
  margin: 2.25rem 0 0.5rem;
  letter-spacing: -0.005em;
}

p, ul { margin: 0.75rem 0; }
ul { padding-left: 1.25rem; }
li { margin: 0.25rem 0; }

.tagline {
  font-size: 1.15rem;
  color: var(--fg-muted);
  margin-bottom: 1.5rem;
}

.meta {
  color: var(--fg-muted);
  font-size: 0.9rem;
  margin-top: 0;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover { text-decoration: underline; }

strong { font-weight: 600; }