:root {
  --color-bg: #0b0f14;
  --color-surface: #121821;
  --color-text: #e6edf3;
  --color-muted: #9aa7b2;
  --color-accent: #6fd3a3;
  --color-border: #24303c;
  --max-width: 46rem;
}

* {
  box-sizing: border-box;
}

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

header,
main,
footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

header {
  text-align: center;
  padding-top: 4rem;
}

h1 {
  margin: 0;
  font-size: 2.5rem;
  letter-spacing: -0.02em;
}

.tagline {
  color: var(--color-muted);
  font-size: 1.1rem;
  margin-top: 0.75rem;
}

section {
  margin-bottom: 3rem;
}

h2 {
  font-size: 1.5rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.1rem;
  color: var(--color-accent);
  margin-top: 1.5rem;
}

code {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0.25rem;
  padding: 0.1rem 0.3rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}

pre {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  padding: 1rem;
  overflow-x: auto;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.85rem;
}

ul {
  padding-left: 1.25rem;
}

li {
  margin-bottom: 0.75rem;
}

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

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

footer a:hover {
  text-decoration: underline;
}