header {
  position: sticky;
  top: 0;
  z-index: 80;
  background:
    radial-gradient(900px 360px at 15% 0%, rgba(0, 139, 191, 0.18), transparent 60%),
    radial-gradient(900px 420px at 85% 0%, rgba(0, 92, 126, 0.14), transparent 62%),
    rgba(255, 255, 255, 0.74);
  border-bottom: 1px solid var(--stroke-1);
  backdrop-filter: blur(8px);
}

.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.15rem 0;
  color: var(--color-gopsco-dark);
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 700;
  color: var(--color-gopsco-dark);
}

.brand-icon {
  width: 30px;
  height: 30px;
  border-radius: 10px;
  box-shadow: 0 14px 34px rgba(0, 46, 63, 0.16);
  border: 1px solid rgba(0, 46, 63, 0.12);
  background: rgba(255, 255, 255, 0.90);
}

.brand-text {
  display: flex;
  align-items: baseline;
}

.brand-wordmark {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  line-height: 1;
  letter-spacing: -0.02em;
  filter: drop-shadow(0 12px 30px rgba(0, 46, 63, 0.14));
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 900;
}

.brand-suffix {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.18rem 0.45rem;
  border-radius: 999px;
  border: 1px solid rgba(0, 46, 63, 0.14);
  background:
    radial-gradient(120px 50px at 20% 0%, rgba(0, 139, 191, 0.18), transparent 70%),
    rgba(255, 255, 255, 0.72);
  color: rgba(0, 46, 63, 0.92);
}

.brand-tagline {
  font-size: 0.8rem;
  font-weight: 600;
  color: rgba(0, 46, 63, 0.66);
  letter-spacing: 0.01em;
}

.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
}

.nav a,
.nav button {
  color: var(--color-gopsco-dark);
  font-weight: 500;
  padding: 0.25rem 0;
  opacity: 0.9;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(0, 46, 63, 0.10);
  background:
    radial-gradient(140px 60px at 30% 0%, rgba(255, 255, 255, 0.90), rgba(255, 255, 255, 0.55)),
    rgba(255, 255, 255, 0.52);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.85),
    0 10px 22px rgba(0, 46, 63, 0.08);
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
  position: relative;
  overflow: hidden;
}

.nav-link::after {
  content: "";
  position: absolute;
  inset: -40% -20%;
  background: radial-gradient(closest-side, rgba(255, 255, 255, 0.72), transparent 70%);
  opacity: 0.0;
  transform: rotate(8deg);
  transition: opacity 160ms ease;
  pointer-events: none;
}

.nav-link:hover,
.nav-link:focus {
  background:
    radial-gradient(240px 120px at 30% 0%, rgba(255, 255, 255, 0.90), rgba(255, 255, 255, 0.62)),
    rgba(255, 255, 255, 0.68);
  border-color: rgba(0, 139, 191, 0.22);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 14px 32px rgba(0, 46, 63, 0.12);
  transform: translateY(-1px);
}

.nav-link:hover::after,
.nav-link:focus::after {
  opacity: 0.65;
}

.nav a.nav-cta {
  padding: 0.55rem 1.05rem;
  border-radius: 999px;
  background: var(--gradient-accent);
  border: 1px solid var(--stroke-1);
  box-shadow: 0 12px 26px rgba(0, 46, 63, 0.18);
  color: var(--color-white);
  opacity: 1;
}

.nav a.nav-cta:hover,
.nav a.nav-cta:focus {
  transform: translateY(-1px);
}

.nav a:hover,
.nav a:focus {
  color: var(--color-gopsco-dark);
  opacity: 1;
  text-decoration: none;
}

.nav-item {
  position: relative;
}

.nav-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(0, 46, 63, 0.10);
  background:
    radial-gradient(140px 60px at 30% 0%, rgba(255, 255, 255, 0.90), rgba(255, 255, 255, 0.52)),
    rgba(255, 255, 255, 0.50);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.86),
    0 10px 22px rgba(0, 46, 63, 0.08);
  font: inherit;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
  position: relative;
  overflow: hidden;
}

.nav-trigger::after {
  content: "";
  position: absolute;
  inset: -40% -20%;
  background: radial-gradient(closest-side, rgba(255, 255, 255, 0.72), transparent 70%);
  opacity: 0.0;
  transform: rotate(8deg);
  transition: opacity 160ms ease;
  pointer-events: none;
}

.nav-trigger:hover,
.nav-trigger:focus {
  background:
    radial-gradient(240px 120px at 30% 0%, rgba(255, 255, 255, 0.90), rgba(255, 255, 255, 0.62)),
    rgba(255, 255, 255, 0.68);
  border-color: rgba(0, 139, 191, 0.22);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 14px 32px rgba(0, 46, 63, 0.12);
  transform: translateY(-1px);
}

.nav-trigger:hover::after,
.nav-trigger:focus::after {
  opacity: 0.65;
}

.nav-caret {
  width: 0.55rem;
  height: 0.55rem;
  display: inline-block;
  border-right: 2px solid rgba(0, 46, 63, 0.72);
  border-bottom: 2px solid rgba(0, 46, 63, 0.72);
  transform: rotate(45deg) translateY(-1px);
  border-radius: 1px;
}

.nav-item--open .nav-caret {
  transform: rotate(-135deg) translateY(-1px);
}

.mega-backdrop {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(1200px 700px at 10% 0%, rgba(0, 139, 191, 0.18), transparent 55%),
    radial-gradient(1000px 620px at 90% 10%, rgba(0, 92, 126, 0.16), transparent 60%),
    rgba(7, 24, 37, 0.38);
  /* Keep the UI crisp; don't blur the nav/mega itself. */
  backdrop-filter: none;
  z-index: 40;
}

.mega {
  /* Fixed + centered = no clipping/hidden columns as the cursor moves across items. */
  position: fixed;
  left: 50%;
  right: auto;
  top: 76px;
  width: min(1050px, 92vw);
  z-index: 90;
  opacity: 0;
  transform: translate(-50%, -8px) scale(0.99);
  pointer-events: none;
  visibility: hidden;
  transition: opacity var(--dur-med) var(--ease-out), transform var(--dur-med) var(--ease-out),
    visibility 0ms linear var(--dur-med);
  max-height: calc(100vh - 100px);
  overflow: auto;
}

.nav-item--open .mega {
  opacity: 1;
  transform: translate(-50%, 0) scale(1);
  pointer-events: auto;
  visibility: visible;
  transition: opacity var(--dur-med) var(--ease-out), transform var(--dur-med) var(--ease-out),
    visibility 0ms;
}

.mega-inner {
  position: relative;
  border-radius: var(--radius-xl);
  border: 1px solid var(--stroke-2);
  background:
    radial-gradient(1200px 560px at 20% 0%, rgba(0, 139, 191, 0.20), transparent 60%),
    radial-gradient(1100px 620px at 85% 10%, rgba(0, 92, 126, 0.16), transparent 62%),
    radial-gradient(1000px 700px at 55% 95%, rgba(212, 175, 55, 0.12), transparent 65%),
    rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow-float);
  overflow: hidden;
}

.mega-inner::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 420px at 20% 0%, rgba(0, 139, 191, 0.10), transparent 60%),
    radial-gradient(900px 520px at 80% 10%, rgba(212, 175, 55, 0.07), transparent 62%);
  opacity: 0.9;
}

@media (max-width: 1040px) {
  .mega-grid {
    grid-template-columns: 1fr 1fr;
  }
  .mega-feature {
    grid-column: 1 / -1;
  }
}

@media (max-width: 780px) {
  .mega-grid {
    grid-template-columns: 1fr;
  }
}

.mega-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.1fr;
  gap: 1rem;
  padding: 1.1rem;
}

.mega-col {
  border-radius: 16px;
  border: 1px solid var(--stroke-1);
  background:
    radial-gradient(520px 260px at 10% 0%, rgba(0, 139, 191, 0.10), transparent 65%),
    radial-gradient(520px 260px at 90% 10%, rgba(212, 175, 55, 0.06), transparent 70%),
    rgba(255, 255, 255, 0.74);
  padding: 0.95rem;
}

.mega-title {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(0, 46, 63, 0.70);
  margin-bottom: 0.75rem;
}

.mega-link {
  display: grid;
  gap: 0.18rem;
  padding: 0.65rem 0.65rem 0.65rem 0.8rem;
  border-radius: 14px;
  border: 1px solid transparent;
  color: var(--color-gopsco-dark);
  background: transparent;
  transition: transform 140ms ease, background 140ms ease, border-color 140ms ease;
  position: relative;
}

.mega-link::before {
  content: "";
  position: absolute;
  left: 0.35rem;
  top: 0.85rem;
  width: 0.38rem;
  height: 0.38rem;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(0, 139, 191, 0.9), rgba(212, 175, 55, 0.65));
  box-shadow: 0 10px 22px rgba(0, 46, 63, 0.16);
  opacity: 0.75;
}

.mega-link:hover,
.mega-link:focus {
  background: rgba(255, 255, 255, 0.88);
  border-color: var(--stroke-1);
  transform: translateY(-1px);
}

.mega-link-title {
  font-weight: 800;
  letter-spacing: -0.01em;
}

.mega-link-desc {
  font-size: 0.92rem;
  line-height: 1.35;
  color: rgba(0, 46, 63, 0.70);
}

.mega-feature {
  display: flex;
}

.mega-feature-card {
  width: 100%;
  border-radius: 18px;
  border: 1px solid rgba(0, 139, 191, 0.22);
  background:
    radial-gradient(900px 520px at 15% 0%, rgba(0, 139, 191, 0.24), transparent 62%),
    radial-gradient(900px 520px at 85% 10%, rgba(0, 92, 126, 0.18), transparent 62%),
    rgba(255, 255, 255, 0.78);
  padding: 1.05rem 1.05rem 1.1rem;
  box-shadow: 0 18px 52px rgba(0, 46, 63, 0.14);
  display: grid;
  gap: 0.6rem;
  align-content: start;
}

.mega-feature-card--dark {
  border-color: rgba(255, 255, 255, 0.14);
  background:
    radial-gradient(900px 520px at 15% 0%, rgba(0, 139, 191, 0.20), transparent 62%),
    radial-gradient(900px 520px at 85% 10%, rgba(212, 175, 55, 0.16), transparent 62%),
    linear-gradient(180deg, rgba(7, 24, 37, 0.94), rgba(11, 34, 49, 0.92));
  color: rgba(255, 255, 255, 0.92);
}

.mega-feature-card--dark .mega-feature-body {
  color: rgba(255, 255, 255, 0.78);
}

.mega-feature-card--dark .cta-secondary {
  border-color: rgba(255, 255, 255, 0.22);
  color: rgba(255, 255, 255, 0.92);
}

.mega-feature-card--dark .cta-secondary:hover,
.mega-feature-card--dark .cta-secondary:focus {
  border-color: rgba(255, 255, 255, 0.42);
  box-shadow: 0 16px 46px rgba(0, 0, 0, 0.28);
}

.mega-feature-kicker {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(0, 46, 63, 0.68);
}

.mega-feature-card--dark .mega-feature-kicker {
  color: rgba(255, 255, 255, 0.68);
}

.mega-feature-title {
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.mega-feature-body {
  color: rgba(0, 46, 63, 0.74);
  line-height: 1.45;
}

.mega-feature-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  margin-top: 0.15rem;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--stroke-1);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 12px 26px rgba(0, 46, 63, 0.12);
  padding: 10px;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: rgba(0, 46, 63, 0.78);
  border-radius: 999px;
}

.nav-toggle-bar + .nav-toggle-bar {
  margin-top: 6px;
}

.nav-panel {
  display: none;
}

.nav-panel.open {
  display: block;
  position: fixed;
  inset: 0;
  background: rgba(0, 46, 63, 0.55);
  backdrop-filter: blur(10px);
  z-index: 60;
}

.nav-panel-inner {
  width: min(980px, 92vw);
  margin: 4.5rem auto 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--stroke-2);
  background:
    radial-gradient(800px 360px at 18% 0%, rgba(0, 139, 191, 0.18), transparent 60%),
    radial-gradient(700px 340px at 85% 15%, rgba(0, 92, 126, 0.14), transparent 60%),
    var(--surface-1);
  box-shadow: var(--shadow-float);
  padding: 1.2rem 1.2rem 1.35rem;
}

.nav-panel-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav-panel-title {
  font-weight: 800;
  color: var(--color-gopsco-deep);
  letter-spacing: -0.02em;
}

.nav-close {
  padding: 0.55rem 0.85rem;
  border-radius: 12px;
  border: 1px solid var(--stroke-2);
  background: rgba(255, 255, 255, 0.8);
  font-weight: 600;
  color: var(--color-gopsco-deep);
}

.nav-panel-grid {
  margin-top: 1rem;
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.nav-group {
  border-radius: 14px;
  border: 1px solid var(--stroke-1);
  background: var(--surface-2);
  padding: 0.85rem 0.85rem 0.95rem;
}

.nav-group-title {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(0, 46, 63, 0.72);
  margin-bottom: 0.6rem;
}

.nav-group a {
  display: block;
  padding: 0.35rem 0;
  color: rgba(0, 46, 63, 0.88);
  font-weight: 600;
}

.nav-panel-cta {
  margin-top: 1rem;
  display: flex;
  justify-content: flex-end;
}

@media (max-width: 820px) {
  .masthead {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav-links--desktop {
    display: none;
  }

  .mega-backdrop,
  .mega {
    display: none !important;
  }
}

@media (max-width: 520px) {
  .brand-suffix {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mega {
    transition: none;
  }
  .nav a.nav-cta:hover,
  .nav a.nav-cta:focus,
  .nav-trigger:hover,
  .nav-trigger:focus {
    transform: none;
  }
}