:root {
  --phase-navy: #1a2540;
  --phase-navy-soft: #2a3654;
  --phase-amber: #e87b2c;
  --phase-paper: #faf8f5;
  --phase-line: rgba(26, 37, 64, 0.12);
}

body.phase-hub {
  background:
    radial-gradient(900px 440px at 0 0, rgba(232, 123, 44, 0.08), transparent 70%),
    linear-gradient(180deg, var(--phase-paper), #fff 48%);
  color: var(--phase-navy);
}

.phase-hub .site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 0;
  background: rgba(250, 248, 245, 0.94);
  border-bottom: 1px solid var(--phase-line);
  box-shadow: 0 8px 24px rgba(26, 37, 64, 0.06);
  backdrop-filter: blur(16px) saturate(150%);
}

.phase-hub .site-header .nav {
  min-height: 68px;
  padding-top: 10px;
  padding-bottom: 10px;
}

.phase-hub .brand-row {
  color: var(--phase-navy);
  text-decoration: none;
}

.phase-hub .brand-logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
  filter: none;
}

.phase-hub .brand-row > div {
  display: block;
}

.phase-hub .brand-row .brand {
  display: block;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.phase-hub .brand-row .muted {
  margin-top: 2px;
  color: #6b7280;
  font-size: 10px !important;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.phase-hub .nav-links {
  gap: 6px;
  flex-wrap: nowrap;
}

.phase-hub .nav-links a,
.phase-hub .nav-actions .btn {
  padding: 8px 11px;
  color: var(--phase-navy);
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 750;
  white-space: nowrap;
}

.phase-hub .nav-links a:hover {
  color: var(--phase-navy);
  background: #fff;
  border-color: var(--phase-line);
}

.phase-hub .nav-links a[aria-current="page"] {
  color: var(--phase-navy);
  background: #fff;
  border-color: rgba(26, 37, 64, 0.3);
  box-shadow: -3px 4px 0 rgba(232, 123, 44, 0.38);
}

.phase-hub .nav-actions .btn {
  background: #fff !important;
  border-color: rgba(26, 37, 64, 0.55) !important;
  color: var(--phase-navy) !important;
  box-shadow: -2px 3px 0 rgba(232, 123, 44, 0.34);
}

.phase-hub main.container {
  padding-top: 24px;
}

.phase-hub .phase-sequence-step,
.phase-hub .phase3-video-subgroup,
.phase-hub .card {
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.phase-hub .phase-sequence-step:hover,
.phase-hub .phase3-video-subgroup:hover,
.phase-hub .card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 38px rgba(26, 37, 64, 0.11);
}

@media (max-width: 900px) {
  .phase-hub .site-header {
    position: relative;
  }

  .phase-hub .site-header .nav {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "brand actions"
      "links links";
  }

  .phase-hub .brand-row {
    grid-area: brand;
  }

  .phase-hub .nav-links {
    grid-area: links;
    width: 100%;
    overflow-x: auto;
    padding: 4px 0 6px;
  }

  .phase-hub .nav-actions {
    grid-area: actions;
  }
}

@media (max-width: 560px) {
  .phase-hub .brand-row .brand {
    font-size: 12px;
  }

  .phase-hub .brand-row .muted {
    display: none;
  }

  .phase-hub .nav-actions .btn:first-child {
    display: none;
  }
}