:root {
  --bg: #f7f5ef;
  --text: #1f2a1f;
  --muted: #5b665b;
  --accent: #2f6b3a;
  --card: #ffffff;
  --line: #dcd8cc;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141814;
    --text: #e6ebe4;
    --muted: #a3ada1;
    --accent: #8cc995;
    --card: #1c221c;
    --line: #2e362e;
  }
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 34rem;
  margin: 0 auto;
  padding: 2.5rem 1rem 3rem;
}

h1 {
  margin: 0 0 0.25rem;
  font-size: 1.9rem;
  color: var(--accent);
}

.tagline { margin: 0 0 2rem; color: var(--muted); }

.code {
  display: inline-block;
  margin: 0 0 1.5rem;
  padding: 0.35rem 0.8rem;
  border: 2px solid var(--accent);
  border-radius: 0.5rem;
  font: 700 1.6rem/1.2 ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  letter-spacing: 0.15em;
}

section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
  margin: 0 0 1rem;
}

section h2 {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

section p { margin: 0.5rem 0; }

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

footer {
  margin-top: 2rem;
  font-size: 0.85rem;
  color: var(--muted);
}