.bh-page { padding-bottom: 4rem; }
.bh-hero {
  position: relative;
  padding: clamp(3rem, 8vw, 5.5rem) 0 clamp(2.5rem, 5vw, 3.5rem);
  overflow: hidden;
}
.bh-hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 85% 20%, rgba(0,102,255,0.18), transparent 55%),
    radial-gradient(ellipse 50% 50% at 10% 80%, rgba(21,181,170,0.12), transparent 50%),
    linear-gradient(180deg, #0a0a0a 0%, #000 100%);
  pointer-events: none; z-index: 0;
}
.bh-hero .container { position: relative; z-index: 1; }
.bh-hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  max-width: 16ch;
  margin-bottom: 1rem;
}
.bh-hero-lead {
  font-size: 1.1rem;
  color: var(--platinum);
  max-width: 36rem;
  line-height: 1.7;
  margin-bottom: 1.75rem;
}
.bh-hero-meta {
  display: flex; flex-wrap: wrap; gap: 0.75rem 1.5rem;
  font-family: var(--fm); font-size: 0.78rem; letter-spacing: 0.04em;
  color: var(--mist); text-transform: uppercase;
}
.bh-hero-meta strong { color: var(--teal); font-weight: 600; }

.bh-featured {
  display: grid;
  gap: 1rem;
  padding: 1.35rem 1.5rem;
  margin: -0.5rem 0 2.5rem;
  background: linear-gradient(135deg, rgba(0,102,255,0.14), rgba(21,181,170,0.08));
  border: 1px solid rgba(0,102,255,0.35);
  border-radius: var(--r);
  align-items: center;
}
@media (min-width: 720px) {
  .bh-featured { grid-template-columns: auto 1fr auto; gap: 1.5rem; }
}
.bh-featured-badge {
  font-family: var(--fm); font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: #7EB6FF; padding: 0.35rem 0.65rem;
  border: 1px solid rgba(0,102,255,0.4); border-radius: 4px;
  width: fit-content;
}
.bh-featured h2 { font-size: 1.25rem; margin: 0 0 0.35rem; }
.bh-featured p { margin: 0; color: var(--mist); font-size: 0.95rem; }
.bh-featured .btn { white-space: nowrap; }

.bh-toolbar {
  display: flex; flex-wrap: wrap; gap: 0.85rem;
  align-items: center; justify-content: space-between;
  margin-bottom: 1.25rem;
}
.bh-search {
  flex: 1 1 16rem;
  min-width: 0;
  padding: 0.85rem 1.1rem;
  background: var(--surface);
  border: 1.5px solid rgba(255,255,255,0.18);
  border-radius: var(--r);
  color: var(--ivory);
  font-family: var(--fb);
  font-size: 1rem;
  outline: none;
}
.bh-search::placeholder { color: var(--smoke); }
.bh-search:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(0,102,255,0.2);
}
.bh-count {
  font-family: var(--fm); font-size: 0.78rem;
  color: var(--mist); letter-spacing: 0.04em;
}

.bh-filters {
  display: flex; flex-wrap: wrap; gap: 0.4rem;
  margin-bottom: 1.5rem;
}
.bh-chip {
  font-family: var(--fm); font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.04em; padding: 0.4rem 0.7rem;
  border-radius: 4px; border: 1px solid rgba(255,255,255,0.16);
  background: transparent; color: var(--platinum);
  cursor: pointer; font-family: var(--fb);
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.bh-chip:hover { border-color: var(--teal); color: var(--ivory); }
.bh-chip.active {
  background: rgba(21,181,170,0.15);
  border-color: var(--teal);
  color: var(--teal);
}

.bh-list {
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--surface);
}
.bh-row {
  display: grid;
  gap: 0.65rem 1.25rem;
  padding: 1.15rem 1.25rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  align-items: center;
  text-decoration: none;
  color: inherit;
  transition: background 0.15s;
}
.bh-row:last-child { border-bottom: 0; }
.bh-row:hover { background: rgba(255,255,255,0.03); }
.bh-row.hidden { display: none; }
@media (min-width: 800px) {
  .bh-row {
    grid-template-columns: 5.5rem 1.2fr 1fr auto;
  }
}
.bh-code {
  font-family: var(--fm); font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.06em; color: var(--teal);
}
.bh-name { font-family: var(--fd); font-size: 1.05rem; font-weight: 600; color: var(--ivory); line-height: 1.3; margin: 0; }
.bh-abbr { display: block; font-size: 0.82rem; color: var(--mist); font-weight: 400; margin-top: 0.2rem; font-family: var(--fb); }
.bh-meta { font-size: 0.9rem; color: var(--platinum); line-height: 1.5; }
.bh-meta span { color: var(--smoke); }
.bh-link {
  font-size: 0.88rem; font-weight: 600; color: var(--teal);
  white-space: nowrap;
}
.bh-row:hover .bh-link { color: var(--ivory); }

.bh-empty {
  padding: 2.5rem 1.5rem; text-align: center; color: var(--mist);
  display: none;
}
.bh-empty.show { display: block; }

.bh-cta {
  margin-top: 3rem;
  padding: 2rem 0 0;
  border-top: 1px solid var(--edge);
  display: flex; flex-wrap: wrap; gap: 1rem;
  align-items: center; justify-content: space-between;
}
.bh-cta p { margin: 0; color: var(--platinum); max-width: 28rem; }
.bh-cta-actions { display: flex; flex-wrap: wrap; gap: 0.65rem; }