:root {
  --qsp-navy: #17365d;
  --qsp-blue: #315f8c;
  --qsp-paper: #fffdf8;
}
body {
  background: var(--qsp-paper);
  color: #252525;
  font-family: Georgia, "Times New Roman", serif;
}

h1,
h2,
h3,
.sidebar-title,
.chapter-number {
  color: var(--qsp-navy);
}

.sidebar-navigation a,
.quarto-navigation-tool {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.theorem,
.definition,
.lemma,
.corollary {
  border-left: 0.22rem solid var(--qsp-blue);
  background: rgb(49 95 140 / 6%);
  padding: 0.8rem 1rem 0.25rem;
  margin: 1.2rem 0;
}

.tikz-svg {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 0 auto;
}

.proof > :last-child::after {
  content: "\25a1";
  float: right;
  font-size: 2em;
  line-height: 1;
  margin-left: 0.5rem;
}

#quarto-content {
  line-height: 1.65;
}