:root {
  --bg: #0e1116;
  --fg: #e6edf3;
  --muted: #9aa4b2;
  --accent: #ff9d3c;
  --border: #21262d;
  --code-bg: #161b22;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

main {
  max-width: 760px;
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
}

header {
  border-bottom: 1px solid var(--border);
  padding-bottom: 2rem;
  margin-bottom: 2rem;
}

h1 {
  font-size: 2.6rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.tagline {
  color: var(--muted);
  font-size: 1.15rem;
  margin: 0;
}

h2 {
  font-size: 1.25rem;
  margin: 2.5rem 0 0.75rem;
  color: var(--accent);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-weight: 600;
}

p { margin: 0.75rem 0; }

ul { padding-left: 1.25rem; margin: 0.75rem 0; }
li { margin: 0.35rem 0; }

.milestones li strong { color: var(--accent); }

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
}
a:hover { border-bottom-color: var(--accent); }

code {
  background: var(--code-bg);
  border: 1px solid var(--border);
  padding: 0.1em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: "SF Mono", Menlo, Consolas, monospace;
}

footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

@media (max-width: 600px) {
  main { padding: 2rem 1rem 4rem; }
  h1 { font-size: 2rem; }
}