:root {
  --bg: #ffffff;
  --fg: #16181d;
  --muted: #5a6270;
  --rule: #e3e6ea;
  --accent: #1a7f4b;
  --code-bg: #f4f6f8;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #e8eaed;
    --muted: #a0a7b4;
    --rule: #2a2e35;
    --accent: #4ac585;
    --code-bg: #1d2026;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 16px 64px;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

header { padding: 48px 0 8px; }

nav {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 12px;
  margin-bottom: 32px;
  font-size: 0.95rem;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
}

nav a { text-decoration: none; }
nav a:hover, nav a[aria-current="page"] { text-decoration: underline; }

.download {
  display: inline-block;
  margin: 4px 8px 8px 0;
  padding: 10px 18px;
  border-radius: 6px;
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
  text-decoration: none;
}
.download:hover { filter: brightness(1.1); }

h1 { font-size: 1.9rem; line-height: 1.25; margin: 0 0 8px; }
h2 { font-size: 1.25rem; margin: 40px 0 8px; }
h3 { font-size: 1.02rem; margin: 28px 0 4px; }

.tagline { color: var(--muted); font-size: 1.1rem; margin: 0 0 24px; }

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

code {
  background: var(--code-bg);
  border-radius: 4px;
  padding: 1px 5px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}

ul { padding-left: 1.25rem; }
li { margin: 6px 0; }

.meta { color: var(--muted); font-size: 0.9rem; }

footer {
  border-top: 1px solid var(--rule);
  margin-top: 56px;
  padding-top: 16px;
  color: var(--muted);
  font-size: 0.9rem;
}