:root {
  --max-width: 680px;
  --fg: #222;
  --fg-muted: #666;
  --bg: #fff;
  --border: #ddd;
}

body {
  font-family: 'IBM Plex Mono', Courier, 'Open Sans', sans-serif;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--fg);
  background: var(--bg);
  max-width: var(--max-width);
  margin: 2.5rem auto;
  padding: 0 1.25rem;
}

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

a:hover {
  opacity: 0.7;
}

/* Navigation */
nav {
  margin-bottom: 3rem;
}

nav a {
  margin-right: 1.25rem;
  text-decoration: none;
  color: var(--fg);
}

nav a:first-child {
  font-weight: 700;
}

nav a:hover {
  opacity: 0.7;
}

/* Headings */
h1 {
  font-size: 1.3rem;
  margin: 0 0 0.5rem 0;
  font-weight: 700;
}

h2 {
  font-size: 1.1rem;
  margin-top: 2rem;
  margin-bottom: 0.25rem;
}

h3 {
  font-size: 1rem;
  margin-top: 1.5rem;
  margin-bottom: 0.25rem;
}

h4 {
  font-size: 0.95rem;
  margin-top: 1.25rem;
  margin-bottom: 0.25rem;
}

/* Home page avatar */
.avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: block;
  margin-bottom: 1rem;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1rem 0;
}

figure {
  margin: 1.5rem 0;
}

figcaption {
  font-size: 0.82rem;
  color: var(--fg-muted);
  margin-top: 0.3rem;
}

/* Code */
pre {
  font-family: 'JetBrains Mono', 'IBM Plex Mono', Courier, monospace;
  font-size: 0.82rem;
  background: #f5f5f5;
  padding: 0.85rem 1rem;
  overflow-x: auto;
  line-height: 1.5;
  margin: 1rem 0;
}

code {
  font-family: 'JetBrains Mono', 'IBM Plex Mono', Courier, monospace;
  font-size: 0.88em;
  background: #f5f5f5;
  padding: 0.1em 0.3em;
}

pre code {
  background: none;
  padding: 0;
  font-size: inherit;
}

/* Tables */
table {
  border-collapse: collapse;
  width: 100%;
  margin: 1rem 0;
  font-size: 0.85rem;
}

th, td {
  border: 1px solid var(--border);
  padding: 0.4rem 0.65rem;
  text-align: left;
}

th {
  background: #f5f5f5;
  font-weight: 700;
}

/* HR */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* Footer */
footer {
  margin-top: 4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.82rem;
  color: var(--fg-muted);
}

/* Lists */
ul, ol {
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.2rem;
}