#architecture {
  background: #f7f8fa;
  padding: 60px 0;
}


#architecture .section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #222;
  text-align: center;
  margin-bottom: 18px;
}
#architecture .section-subtitle {
  color: #444;
  font-size: 1.2rem;
  text-align: center;
  margin-bottom: 36px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
#architecture .network-container {
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 6px 32px rgba(0,0,0,0.10);
  padding: 32px;
  margin: 0 auto;
  min-height: 400px;
  overflow-x: auto;
}
#architecture .layer-label {
  background: #222;
  color: #fff;
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 1rem;
  margin-bottom: 12px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
#input-spectral-labels {
  color: #444;
}
.input-label-item {
  margin: 6px 0;
  font-size: 1rem;
}
.neuron-layer {
  margin: 0 12px;
}
.network-visualization {
  z-index: 1;
}
@media (max-width: 900px) {
  #architecture .network-container {
    padding: 12px;
  }
}


#architecture h2 {
  background: #f7f8fa;
  padding: 60px 0;
  color: red;
}