:root {
  --bg: #fafaf7;
  --fg: #1a1a1a;
  --muted: #8a8a85;
  --accent: #1a1a1a;
  --rule: #e6e6e0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f10;
    --fg: #e8e8e6;
    --muted: #8a8a85;
    --accent: #e8e8e6;
    --rule: #222;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

/* ---------- landing page ---------- */
body.landing main {
  max-width: 36rem;
  margin: 0 auto;
  padding: 4rem 1.5rem 2rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body.landing header {
  margin-bottom: 2.5rem;
}

body.landing h1 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
  letter-spacing: -0.01em;
}

body.landing .tagline {
  margin: 0;
  color: var(--muted);
}

body.landing nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--rule);
}

body.landing nav li {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--rule);
}

body.landing a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}

body.landing a:hover { opacity: 0.6; }

body.landing .muted {
  color: var(--muted);
  font-size: 0.875rem;
}

body.landing footer {
  margin-top: auto;
  padding-top: 2rem;
}