:root {
  --so-red: #e2001a;
  --so-red-dark: #c10016;
  --so-red-light: #eb3348;
  --so-ink: #1f2933;
  --so-rule: #d9e2ec;
  --so-panel: #f8fafc;
  --so-accent: var(--so-red);
}

.wy-nav-content {
  max-width: 1040px;
}

.wy-side-nav-search,
.wy-nav-top {
  background: var(--so-red);
}

.wy-side-nav-search > a,
.wy-side-nav-search .wy-dropdown > a {
  color: #ffffff;
  font-weight: 700;
}

.wy-menu-vertical a:hover {
  background-color: #f8f9fb;
  color: var(--so-red) !important;
}

.wy-menu-vertical li.current > a,
.wy-menu-vertical li.on a {
  color: var(--so-red-dark);
  font-weight: 700;
}

.rst-content h1,
.rst-content h2,
.rst-content h3 {
  color: var(--so-ink);
  font-weight: 650;
  letter-spacing: 0;
}

.rst-content h1 {
  border-bottom: 1px solid var(--so-rule);
  padding-bottom: 0.45rem;
}

.rst-content a {
  color: #0d47a1;
}

.rst-content a:hover {
  color: #1565c0;
}

.rst-content table.docutils {
  border: 1px solid var(--so-rule);
}

.rst-content table.docutils thead {
  background: var(--so-panel);
}

.rst-content .admonition.note {
  border-left: 4px solid var(--so-accent);
}

.rst-content .admonition-title {
  background: #fff1f2;
  color: var(--so-red-dark);
}

.rst-content code.literal {
  border: 1px solid var(--so-rule);
  color: #155e75;
}

.framework-strip {
  align-items: stretch;
  display: grid;
  gap: 0.8rem;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  margin: 1.4rem 0 1.8rem;
}

.framework-node {
  background: #ffffff;
  border: 1px solid var(--so-rule);
  border-left: 4px solid var(--so-red);
  box-shadow: 0 5px 16px rgba(31, 41, 51, 0.06);
  min-height: 150px;
  padding: 1rem;
}

.framework-node strong {
  color: var(--so-ink);
  display: block;
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
}

.framework-node p {
  color: #52616b;
  font-size: 0.86rem;
  line-height: 1.45;
  margin-bottom: 0;
}

.node-index {
  background: var(--so-red);
  color: #ffffff;
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  padding: 0.2rem 0.48rem;
}

.framework-arrow {
  align-self: center;
  color: var(--so-red);
  font-size: 1.4rem;
  font-weight: 700;
}

.grid-cards {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  margin: 1.25rem 0 1.75rem;
}

.doc-card {
  background: #ffffff;
  border: 1px solid var(--so-rule);
  border-left: 4px solid var(--so-red);
  box-shadow: 0 5px 16px rgba(31, 41, 51, 0.06);
  color: inherit !important;
  display: block;
  min-height: 145px;
  padding: 1rem 1.1rem;
  text-decoration: none !important;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.doc-card:hover {
  box-shadow: 0 10px 24px rgba(31, 41, 51, 0.12);
  transform: translateY(-3px);
}

.doc-card h3 {
  color: var(--so-ink);
  font-size: 1.05rem;
  margin-top: 0;
}

.doc-card p {
  color: #52616b;
  font-size: 0.86rem;
  line-height: 1.45;
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .framework-strip {
    grid-template-columns: 1fr;
  }

  .framework-arrow {
    display: none;
  }
}