.site-header {
  position: fixed;
  z-index: 50;
  top: 1rem;
  left: 0;
  width: 100%;
}

.nav-shell {
  display: flex;
  min-height: 4.5rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 0.75rem 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--radius-xl);
  background: var(--color-surface-glass);
  box-shadow: 0 8px 32px rgba(31, 38, 135, 0.06);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: box-shadow var(--duration-normal) var(--ease-standard);
}

.site-header.is-scrolled .nav-shell {
  box-shadow: var(--shadow-md);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.18rem;
  font-weight: 760;
  letter-spacing: -0.03em;
}

.brand-mark {
  display: inline-grid;
  width: 2.15rem;
  height: 2.15rem;
  place-items: center;
  color: #fff;
  border-radius: 0.65rem;
  background: linear-gradient(135deg, #2dd4bf, #3b82f6);
  box-shadow: 0 8px 18px -8px rgba(59, 130, 246, 0.8);
}

.brand-light {
  font-weight: 350;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-muted);
  font-size: 0.9rem;
  font-weight: 600;
  transition: color var(--duration-fast) var(--ease-standard);
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--color-brand-strong);
}

.mobile-menu-button {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  color: var(--color-ink-soft);
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
}

.glass-card {
  border: 1px solid rgba(255, 255, 255, 0.76);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.86), rgba(255, 255, 255, 0.7));
  box-shadow: 0 8px 30px -24px rgba(15, 23, 42, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.74);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  color: var(--color-brand-strong);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.gradient-text {
  color: transparent;
  background: linear-gradient(90deg, #0d9488 0%, #0891b2 48%, #3b82f6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  text-shadow: 0 10px 36px rgba(59, 130, 246, 0.1);
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.7rem 1.2rem;
  color: #fff;
  border-radius: var(--radius-md);
  background: var(--color-ink);
  font-weight: 700;
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-standard), transform var(--duration-fast) var(--ease-standard), opacity var(--duration-fast);
}

.button:hover {
  background: var(--color-brand-strong);
}

.button:active {
  transform: scale(0.98);
}

.button:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.button:disabled,
.button[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.58;
}

.button.is-loading {
  cursor: wait;
}

.button-secondary {
  color: var(--color-ink-soft);
  border: 1px solid var(--color-border);
  background: #fff;
}

.button-secondary:hover {
  color: var(--color-brand-strong);
  border-color: #99f6e4;
  background: var(--color-brand-soft);
}

.spinner {
  width: 1rem;
  height: 1rem;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

.field {
  width: 100%;
  min-height: 3.5rem;
  padding: 0.85rem 1rem;
  color: var(--color-ink);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  outline: none;
  background: #fff;
  transition: border-color var(--duration-fast), box-shadow var(--duration-fast);
}

.field::placeholder {
  color: var(--color-faint);
}

.field:focus {
  border-color: #2dd4bf;
  box-shadow: var(--focus-ring);
}

.field[aria-invalid="true"] {
  border-color: #f04438;
}

.field-message {
  min-height: 1.5rem;
  margin: 0.45rem 0 0;
  color: var(--color-muted);
  font-size: 0.85rem;
}

.field-message.is-error {
  color: var(--color-danger);
}

.notice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: 0.9rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-ink-soft);
  background: rgba(255, 255, 255, 0.84);
}

.notice-success {
  color: var(--color-success);
  border-color: #a7f3d0;
  background: var(--color-success-soft);
}

.notice-warning {
  color: var(--color-warning);
  border-color: #fde68a;
  background: var(--color-warning-soft);
}

.notice-error {
  color: var(--color-danger);
  border-color: #fecdca;
  background: var(--color-danger-soft);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.22rem 0.62rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-muted);
  background: #fff;
  font-size: 0.75rem;
  font-weight: 700;
}

.badge-ready {
  color: var(--color-success);
  border-color: #a7f3d0;
  background: var(--color-success-soft);
}

.badge-soon {
  color: var(--color-warning);
  border-color: #fde68a;
  background: var(--color-warning-soft);
}

.site-footer {
  padding: 2.25rem 0;
  border-top: 1px solid rgba(226, 232, 240, 0.8);
  background: rgba(255, 255, 255, 0.46);
  backdrop-filter: blur(6px);
}

.footer-inner {
  display: grid;
  gap: var(--space-5);
  justify-items: center;
  color: var(--color-faint);
  font-size: 0.82rem;
  text-align: center;
}

.privacy-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.45rem 0.85rem;
  color: var(--color-success);
  border: 1px solid #bbf7d0;
  border-radius: 999px;
  background: var(--color-success-soft);
}

.modal {
  width: min(calc(100% - 2rem), 30rem);
  padding: 0;
  color: var(--color-ink);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 26px 70px -24px rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(18px);
}

.modal::backdrop {
  background: rgba(15, 23, 42, 0.35);
  backdrop-filter: blur(3px);
}

.modal-content {
  padding: var(--space-6);
}

.modal-title {
  margin-bottom: var(--space-2);
  font-size: 1.2rem;
}

.modal-domain {
  padding: 0.7rem 0.85rem;
  overflow-wrap: anywhere;
  color: var(--color-brand-strong);
  border-radius: var(--radius-sm);
  background: var(--color-brand-soft);
  font-weight: 700;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 720px) {
  .nav-shell {
    min-height: 4rem;
    border-radius: 1.1rem;
  }

  .mobile-menu-button {
    display: grid;
  }

  .nav-links {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 1rem;
    left: 1rem;
    display: none;
    padding: var(--space-3);
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.96);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(14px);
  }

  .nav-links.is-open {
    display: grid;
  }

  .nav-link {
    min-height: 2.75rem;
    padding: 0.55rem 0.75rem;
    border-radius: var(--radius-sm);
  }

  .nav-link:active {
    background: var(--color-brand-soft);
  }

  .modal-actions {
    flex-direction: column-reverse;
  }

  .modal-actions .button {
    width: 100%;
  }
}