:root {
  --sub-primary: #334155;
  --sub-primary-light: #475569;
  --sub-primary-lighter: #64748B;
  --sub-primary-bg: #F1F5F9;
  --sub-primary-bg-deep: #CBD5E1;
  --sub-primary-10: rgba(51, 65, 85, 0.10);
  --sub-primary-15: rgba(51, 65, 85, 0.15);
  --sub-primary-25: rgba(51, 65, 85, 0.25);
}

.sub-hero {
  background: linear-gradient(160deg, #64748B 0%, #475569 40%, #334155 80%, #1E293B 100%);
}

.sub-hero::before {
  background: radial-gradient(ellipse, rgba(148, 163, 184, 0.25) 0%, transparent 60%);
}

.sub-hero::after {
  background: radial-gradient(ellipse, rgba(255, 255, 255, 0.07) 0%, transparent 55%);
}

.sub-hero-title .sub-gradient {
  background: linear-gradient(135deg, #fff 0%, #CBD5E1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sub-hero-badge {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.3);
}

.sub-hero-chip:hover {
  border-color: rgba(51, 65, 85, 0.3);
}

.sub-hero-chip-icon {
  background: rgba(51, 65, 85, 0.15);
}

.sub-hero-chip-icon svg {
  stroke: #CBD5E1;
}

.sub-section-dark .sub-label {
  color: rgba(203, 213, 225, 0.9) !important;
}

.sub-dark-highlight::before {
  background: linear-gradient(180deg, #475569, #334155);
}

.sub-section-dark .sub-future-item:hover {
  border-color: rgba(203, 213, 225, 0.15);
}

.sub-section-dark .sub-future-item-dot {
  background: #64748B;
}

.sub-wave-bottom-warm {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 60' preserveAspectRatio='none'%3E%3Cpath d='M0,60 L0,30 Q360,0 720,30 T1440,30 L1440,60 Z' fill='%23F1F5F9'/%3E%3C/svg%3E");
}

.sub-closing {
  background: var(--sub-primary-bg);
  border-color: rgba(51, 65, 85, 0.12);
}

.sub-closing::before {
  background: linear-gradient(180deg, #475569, #334155);
}

.sub-divider {
  background: linear-gradient(90deg, transparent, rgba(51, 65, 85, 0.2), transparent);
}

.sub-aside-box-icon {
  background: var(--sub-primary-10);
}

.sub-aside-box-icon svg {
  stroke: var(--sub-primary);
}

.sub-inline-link {
  color: #334155;
  border-color: rgba(51, 65, 85, 0.3);
}

.sub-inline-link:hover {
  color: #1E293B;
  border-color: #334155;
}

.sub-inline-link-light {
  color: #CBD5E1;
  border-color: rgba(203, 213, 225, 0.4);
}

.sub-inline-link-light:hover {
  color: #E2E8F0;
  border-color: #CBD5E1;
}