:root {
  color-scheme: light;
  --background: #ffffff;
  --text: #111111;
  --surface: #f4f4f4;
  --border: #111111;
  --link-hover-bg: #111111;
  --link-hover-text: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;  
    --background: #111111;
    --text: #eeeeee;
    --surface: #1c1c1c;
    --border: #eeeeee;
    --link-hover-bg: #eeeeee;
    --link-hover-text: #111111;
  }
}

body {
  box-sizing: border-box;
  max-width: 48em; 
  margin: 2rem auto; 
  padding: 1.25rem; 
  background: var(--background);
  color: var(--text);
  font-family: serif
  line-height: 1.6;
  overflow-wrap: break-word;
}
.header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0;
}
.header h2 {
  margin: 0;
}
header + hr {
  margin-top: 0.4rem;
}

a {
  display: inline-block;
  padding: 0.05em 0.3em;
  border: 1px solid currentColor;
  color: inherit;
  text-decoration: none;
  transition: background-color 120ms ease, color 120ms ease;
}
a:hover,
a:focus-visible {
  background: var(--link-hover-bg);
  color: var(--link-hover-text);
}
a:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}
/* site title */
a.nav-title {
  padding: 0;
  border: 0;
}
a.nav-title:hover,
a.nav-title:focus-visible {
  background: none;
  color: inherit;
  text-decoration: underline;
}
/*a.nav-title,
a.nav-title:visited,
a.nav-title:hover,
a.nav-title:active {
  color: inherit;
  text-decoration: none;
  background: none;
  border: 0;
  box-shadow: none;
}*/
hr { 
  border: 0;
  border-top: 1px solid var(--border);
}
pre {
  overflow-x: auto;
  padding: 0.8em;
  border: 1px solid var(--border);
  background: var(--surface);
}
img {
  max-width: 100%;
  height: auto;
}