.otg-hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: var(--color-bg);
}
.otg-hero__radial {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 70% 40%, oklch(from var(--color-primary) l c h / 0.10) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 20% 70%, oklch(from var(--color-accent) l c h / 0.06) 0%, transparent 50%);
  pointer-events: none;
}
.otg-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-divider) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-divider) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.3;
  pointer-events: none;
}

.arch-diagram {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
}
.arch-layer {
  margin-bottom: var(--space-5);
}
.arch-layer__label {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-faint);
  margin-bottom: var(--space-2);
  font-weight: 600;
}
.arch-layer__nodes {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.arch-node {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  font-size: 11px;
  font-weight: 600;
  color: var(--color-text-muted);
}
.arch-node--gold {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-highlight);
}
.arch-node--accent {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-highlight);
}
.arch-node__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: currentColor;
}
.arch-arrow {
  text-align: center;
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.arch-arrow::before, .arch-arrow::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-divider);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}
@media (max-width: 768px) {
  .otg-hero .container > div {
    grid-template-columns: 1fr !important;
    gap: var(--space-8);
  }

  .arch-diagram {
    order: 2; 
  }

  .otg-hero .container > div > div:first-child {
    order: 1; 
  }
}
@media (max-width: 768px) {
  .arch-diagram {
    padding: var(--space-5);
  }

  .arch-layer__nodes {
    gap: var(--space-2);
  }

  .arch-node {
    font-size: 10px;
    padding: 4px 8px;
  }
}