:root {
  color-scheme: light dark;
  --fg: #1a1a1a;
  --bg: #ffffff;
  --muted: #666666;
  --accent: #2563eb;
  --border: #e5e5e5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #f0f0f0;
    --bg: #121212;
    --muted: #a0a0a0;
    --border: #2a2a2a;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.6;
}

header {
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
}

nav {
  display: flex;
  gap: 1.5rem;
  max-width: 720px;
  margin: 0 auto;
  align-items: center;
}

nav .brand {
  font-weight: 700;
  margin-right: auto;
}

nav a {
  color: var(--fg);
  text-decoration: none;
  font-size: 0.95rem;
}

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

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

h1 {
  font-size: 1.8rem;
}

.muted {
  color: var(--muted);
}

.eyebrow {
  margin: 0 0 0.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: 2.4rem;
}

.tagline {
  margin: 0 0 1.5rem;
  font-size: 1.3rem;
  font-weight: 600;
}

.hero p {
  margin: 0 0 1.25rem;
}

.cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 2rem 0 0;
}

.cta-links a {
  display: inline-block;
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--fg);
  text-decoration: none;
  font-size: 0.9rem;
}

.cta-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

#about {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

#about h2 {
  font-size: 1.3rem;
}

.app {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.app:first-of-type {
  margin-top: 2rem;
  padding-top: 0;
  border-top: none;
}

.app h2 {
  margin: 0 0 0.5rem;
  font-size: 1.3rem;
}

.status {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

main h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.15rem;
}

main p {
  margin: 0 0 1rem;
}

main ul {
  margin: 0 0 1rem;
  padding-left: 1.4rem;
}

main li {
  margin: 0 0 0.4rem;
}

footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}