:root {
  --bg: #faf9f6;
  --fg: #1b2230;
  --muted: #5b6373;
  --accent: #0f6b78;
  --accent-fg: #ffffff;
  --border: rgba(27, 34, 48, 0.14);
  --card: #ffffff;
  --code-bg: rgba(15, 107, 120, 0.08);
  --maxw: 72ch;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171d;
    --fg: #e9ebf0;
    --muted: #9aa3b2;
    --accent: #5cc6d2;
    --accent-fg: #0c1116;
    --border: rgba(233, 235, 240, 0.16);
    --card: #1b2028;
    --code-bg: rgba(92, 198, 210, 0.12);
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
  line-height: 1.65;
  font-size: 17px;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

header.site {
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
}

header.site .wordmark {
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, ui-serif, Georgia, serif;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fg);
  text-decoration: none;
}

header.site .tagline {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.15rem;
}

main {
  padding: 3rem 0 4rem;
}

h1,
h2,
h3 {
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, ui-serif, Georgia, serif;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  margin: 0 0 1rem;
}

h2 {
  font-size: 1.4rem;
  margin: 2.5rem 0 0.75rem;
}

h3 {
  font-size: 1.1rem;
  margin: 1.75rem 0 0.5rem;
}

p,
ul,
ol {
  margin: 0 0 1rem;
}

ul,
ol {
  padding-left: 1.25rem;
}

li {
  margin: 0.25rem 0;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  text-decoration-thickness: 2px;
}

.lede {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 60ch;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 0.6rem;
  padding: 1.25rem 1.4rem;
  margin: 1.5rem 0;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-fg);
  text-decoration: none;
  padding: 0.6rem 1rem;
  border-radius: 0.5rem;
  font-weight: 500;
}

.btn.secondary {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--border);
}

.btn + .btn {
  margin-left: 0.5rem;
}

code,
pre {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  font-size: 0.9em;
}

code {
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 0.3rem;
}

pre {
  background: var(--code-bg);
  padding: 1rem;
  border-radius: 0.5rem;
  overflow-x: auto;
}

blockquote {
  margin: 1rem 0;
  padding: 0.5rem 1rem;
  border-left: 3px solid var(--accent);
  background: var(--code-bg);
  border-radius: 0 0.4rem 0.4rem 0;
  color: var(--fg);
}

footer.site {
  border-top: 1px solid var(--border);
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

footer.site a {
  color: var(--muted);
}

hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

.muted {
  color: var(--muted);
}