:root {
  --accent: #7C3AED;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 18px;
  line-height: 1.7;
  color: #1a1a1a;
  background: #fafafa;
}

main { max-width: 720px; margin: 0 auto; padding: 2rem 1.5rem; }

header {
  border-bottom: 1px solid #e5e5e5;
  padding: 1rem 1.5rem;
}
header nav {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  gap: 1.5rem;
  align-items: center;
}
header nav a:first-child {
  font-weight: 700;
  font-size: 1.1rem;
  margin-right: auto;
}

footer {
  border-top: 1px solid #e5e5e5;
  padding: 2rem 1.5rem;
  text-align: center;
  color: #666;
  font-size: 0.9rem;
}

h1 { font-size: 2rem; line-height: 1.3; margin-bottom: 1rem; }
h2 { font-size: 1.5rem; line-height: 1.3; margin-top: 2.5rem; margin-bottom: 1rem; color: #111; }
h3 { font-size: 1.2rem; margin-top: 2rem; margin-bottom: 0.75rem; }
p { margin-bottom: 1.25rem; }

a { color: var(--accent); text-decoration: underline; }
a:hover { text-decoration: none; }

.tldr {
  background: #f5f0ff;
  border-left: 4px solid var(--accent);
  padding: 1rem 1.5rem;
  margin-bottom: 2rem;
  border-radius: 0 4px 4px 0;
}

.article-list { list-style: none; }
.article-list li { padding: 1rem 0; border-bottom: 1px solid #e5e5e5; }
.article-list a { font-weight: 600; font-size: 1.1rem; }
.article-list p { color: #555; margin-top: 0.25rem; margin-bottom: 0; font-size: 0.95rem; }

.category-heading {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #888;
  margin-top: 2.5rem;
  margin-bottom: 0.5rem;
  border-bottom: none;
}

code { background: #f3f3f3; padding: 2px 6px; border-radius: 3px; font-size: 0.9em; }
pre { background: #f3f3f3; padding: 1rem; border-radius: 4px; overflow-x: auto; margin-bottom: 1.25rem; }
pre code { background: none; padding: 0; }