:root {
  --aim-navy: #102a43;
  --aim-blue: #0b72b9;
  --aim-cyan: #27a8c7;
  --pst-color-primary: var(--aim-blue);
  --pst-color-link: #0869a8;
}

html[data-theme="dark"] {
  --pst-color-primary: #65c5e3;
  --pst-color-link: #73c9e4;
}

.bd-header {
  border-top: 4px solid var(--aim-cyan);
  box-shadow: 0 1px 0 rgba(16, 42, 67, 0.12);
}

.navbar-brand img {
  max-height: 44px;
}

.bd-main .bd-content .bd-article-container {
  max-width: 58rem;
}

h1 {
  color: var(--aim-navy);
  font-weight: 760;
  letter-spacing: -0.025em;
}

html[data-theme="dark"] h1 {
  color: #e6f4f8;
}

.lead {
  max-width: 52rem;
  font-size: 1.2rem;
  line-height: 1.7;
}

.sd-card {
  border: 1px solid rgba(16, 42, 67, 0.12);
  border-radius: 0.8rem;
  box-shadow: 0 8px 24px rgba(16, 42, 67, 0.06);
  transition: transform 140ms ease, box-shadow 140ms ease;
}

.sd-card:hover {
  box-shadow: 0 12px 30px rgba(16, 42, 67, 0.12);
  transform: translateY(-2px);
}

.sd-card-title {
  color: var(--aim-blue);
  font-weight: 720;
}

.responsive-video {
  width: 100%;
  height: auto;
  border-radius: 0.75rem;
  background: #071520;
  box-shadow: 0 10px 30px rgba(16, 42, 67, 0.18);
}

table.docutils {
  font-size: 0.92rem;
}

.math-wrapper {
  overflow-x: auto;
  padding-block: 0.4rem;
}