:root {
  --bg: #fbfaf7;
  --fg: #1f2328;
  --muted: #5d646d;
  --accent: #2f6f5e;
  --rule: #e3e0d8;
  --card: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181b;
    --fg: #e7e9eb;
    --muted: #a2a9b1;
    --accent: #7cc4ad;
    --rule: #2c3136;
    --card: #1c2024;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main, header, footer {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 16px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-top: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--rule);
}
header .brand { font-weight: 700; font-size: 1.15rem; color: var(--fg); text-decoration: none; }
header nav a { margin-left: 1rem; }

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

h1 { font-size: 2rem; line-height: 1.2; margin: 2.5rem 0 0.5rem; }
h2 { font-size: 1.25rem; margin: 2.25rem 0 0.5rem; }
h3 { font-size: 1.05rem; margin: 1.5rem 0 0.25rem; }

.lede { font-size: 1.2rem; color: var(--muted); }
.meta { color: var(--muted); font-size: 0.95rem; }

.features { list-style: none; padding: 0; display: grid; gap: 0.75rem; }
.features li {
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 0.9rem 1.1rem;
}
.features strong { display: block; }

.callout {
  border-left: 4px solid var(--accent);
  background: var(--card);
  padding: 0.9rem 1.1rem;
  margin: 1.5rem 0;
}

table { border-collapse: collapse; width: 100%; font-size: 0.95rem; }
th, td { text-align: left; vertical-align: top; padding: 0.5rem 0.6rem; border-bottom: 1px solid var(--rule); }
code { font-size: 0.85em; overflow-wrap: anywhere; }

footer {
  margin-top: 3rem;
  padding-top: 1.25rem;
  padding-bottom: 2rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9rem;
}
footer a { margin-right: 1rem; }