.bf-guide-meta {
  display: grid;
  max-width: 72ch;
  margin: clamp(23px, 4vw, 40px) 0 16px;
  gap: 6px;
  color: var(--secondary);
  font-size: .96rem;
}

.bf-guide-meta strong { color: var(--ink); }
.bf-updated { color: var(--muted); font-size: .8rem; }
.bf-index ul { padding-left: 0; list-style: none; }
.bf-index .filter-chip { display: inline-flex; align-items: center; }

.bf-category {
  margin-top: clamp(25px, 5vw, 65px);
  padding-top: clamp(19px, 3vw, 31px);
  border-top: 1px solid var(--line);
}

.bf-category-head {
  display: grid;
  margin-bottom: 18px;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  align-items: start;
  gap: 18px 32px;
}

.bf-category-head h2 {
  margin-bottom: 5px;
  font-size: clamp(1.8rem, 3.5vw, 2.65rem);
  font-weight: 790;
  letter-spacing: -.061em;
  line-height: 1.1;
}

.bf-category-head p {
  max-width: 58ch;
  color: var(--secondary);
  font-size: .95rem;
  text-wrap: pretty;
}

.bf-criteria {
  padding: 12px 15px;
  border: 1px solid #e6e0f7;
  border-radius: 13px;
  background: #f5f1ff;
  color: #403554;
  font-size: .83rem;
}

.bf-criteria h3 { font-size: .84rem; }

.bf-criteria ul, .bf-facts ul {
  margin: 5px 0 0;
  padding-left: 17px;
}

.bf-criteria li + li, .bf-facts li + li { margin-top: 3px; }
.bf-products.card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.bf-product:target {
  border-color: var(--blue-dark);
  box-shadow: 0 0 0 2px var(--blue-soft);
}

.bf-product .card-body {
  padding: clamp(17px, 2.55vw, 31px);
}

.bf-product-label {
  display: inline-flex;
  margin-bottom: 5px;
  padding: 3px 9px;
  border-radius: 100px;
  background: #f2ebff;
  color: #513583;
  font-size: .72rem;
  font-weight: 740;
}

.bf-product .card-body h3 {
  font-size: clamp(1.22rem, 2vw, 1.56rem);
}

.bf-product .card-body .bf-summary {
  font-size: .9rem;
}

.bf-facts {
  display: grid;
  width: 100%;
  margin: 16px 0 0;
  gap: 10px;
  color: var(--secondary);
  font-size: .84rem;
  overflow-wrap: anywhere;
}

.bf-facts div {
  padding-top: 9px;
  border-top: 1px solid var(--line);
}

.bf-facts dt { color: var(--ink); font-weight: 740; }
.bf-facts dd { margin: 2px 0 0; }

.bf-references {
  display: flex;
  width: 100%;
  margin-top: auto;
  padding-top: 15px;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 5px 10px;
  color: var(--muted);
  font-size: .75rem;
}

.bf-references ul {
  display: flex;
  margin: 0;
  padding-left: 0;
  flex-wrap: wrap;
  gap: 5px 10px;
  list-style: none;
}

.bf-references a {
  color: var(--blue-dark);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.bf-product .card-action { margin-top: 0; }
.bf-advice { margin-top: clamp(26px, 5vw, 60px); }
.bf-advice .steps-list { color: var(--secondary); font-size: .92rem; }

@media (max-width: 680px) {
  .bf-category-head, .bf-products.card-grid { grid-template-columns: minmax(0, 1fr); }
}