/* Long-form blog typography — readable for students & practitioners */
:root {
  --bg: #faf9f7;
  --text: #1c1917;
  --muted: #57534e;
  --accent: #0369a1;
  --accent-soft: #e0f2fe;
  --border: #e7e5e4;
  --code-bg: #f5f5f4;
  --quote-border: #0ea5e9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c0a09;
    --text: #fafaf9;
    --muted: #a8a29e;
    --accent: #38bdf8;
    --accent-soft: #1e293b;
    --border: #292524;
    --code-bg: #1c1917;
    --quote-border: #38bdf8;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Georgia", "Times New Roman", serif;
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
}
.wrap {
  max-width: 42rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 5rem;
}
.article-nav {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.9rem;
  margin-bottom: 2rem;
}
.article-nav a {
  color: var(--accent);
  text-decoration: none;
}
.article-nav a:hover { text-decoration: underline; }
.kicker {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin: 0 0 0.5rem;
}
h1 {
  font-size: 2rem;
  line-height: 1.2;
  font-weight: 700;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}
.deck {
  font-size: 1.2rem;
  line-height: 1.5;
  color: var(--muted);
  margin: 0 0 2rem;
  font-style: italic;
}
.meta {
  font-family: ui-sans-serif, sans-serif;
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}
h2 {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 1.35rem;
  margin: 2.5rem 0 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
h3 {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 1.1rem;
  margin: 2rem 0 0.75rem;
  font-weight: 600;
}
p { margin: 0 0 1.15rem; }
ul, ol { margin: 0 0 1.15rem; padding-left: 1.35rem; }
li { margin-bottom: 0.5rem; }
.lead {
  font-size: 1.2rem;
  line-height: 1.65;
  margin-bottom: 1.5rem;
}
blockquote {
  margin: 1.5rem 0;
  padding: 0.75rem 0 0.75rem 1.25rem;
  border-left: 4px solid var(--quote-border);
  color: var(--muted);
  font-style: italic;
}
aside.callout {
  font-family: ui-sans-serif, sans-serif;
  background: var(--accent-soft);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin: 1.75rem 0;
  font-size: 0.95rem;
  line-height: 1.6;
}
aside.callout strong { color: var(--text); }
pre, code {
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  font-size: 0.88em;
}
pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.5;
}
code {
  background: var(--code-bg);
  padding: 0.15em 0.35em;
  border-radius: 4px;
}
pre code { background: none; padding: 0; }
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}
.footer-article {
  font-family: ui-sans-serif, sans-serif;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--muted);
}
.footer-article a { color: var(--accent); }
.toc {
  font-family: ui-sans-serif, sans-serif;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  font-size: 0.95rem;
}
.toc strong { display: block; margin-bottom: 0.75rem; }
.toc ol { margin: 0; padding-left: 1.25rem; }
.toc a { color: var(--accent); text-decoration: none; }
.toc a:hover { text-decoration: underline; }