:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #555;
  --accent: #2a7a3a;
  --rule: #e2e2e2;
  --code-bg: #f5f5f5;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111;
    --fg: #f0f0f0;
    --muted: #aaa;
    --accent: #6dd07f;
    --rule: #2a2a2a;
    --code-bg: #1c1c1c;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

header {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 16px;
  margin-bottom: 32px;
}

header a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 1.3rem; margin: 2rem 0 0.6rem; }
h3 { font-size: 1.1rem; margin: 1.4rem 0 0.4rem; }

p, ul, ol { margin: 0.6rem 0; }
ul, ol { padding-left: 1.4rem; }
li { margin: 0.25rem 0; }

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

code, pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--code-bg);
  border-radius: 4px;
}
code { padding: 1px 5px; font-size: 0.92em; }
pre { padding: 12px 14px; overflow-x: auto; }

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

footer {
  margin-top: 64px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9rem;
}

.nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.tldr {
  background: var(--code-bg);
  border-left: 3px solid var(--accent);
  padding: 14px 18px;
  border-radius: 4px;
  margin: 16px 0 28px;
}
.tldr h2 { margin-top: 0; }