.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(5, 9, 19, 0.12);
  backdrop-filter: blur(16px);
}

.header-shell {
  min-height: 72px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
  text-decoration: none;
}

.brand-mark,
.brand-mark img {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
}

.brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.04rem;
  font-weight: 760;
  color: var(--color-ink-strong);
}

.brand-tagline {
  max-width: 280px;
  overflow: hidden;
  color: var(--color-ink-muted);
  font-size: 0.7rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-main {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  min-width: 0;
}

.nav-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: #253044;
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: #0c6b58;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-quiet {
  border-color: transparent;
  background: transparent;
  color: var(--color-ink-strong);
}

.mobile-menu {
  display: none;
  position: relative;
}

.mobile-menu summary {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(5, 9, 19, 0.16);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  list-style: none;
}

.mobile-menu summary::-webkit-details-marker {
  display: none;
}

.menu-icon {
  width: 20px;
  display: grid;
  gap: 4px;
}

.menu-icon i {
  height: 2px;
  display: block;
  background: #111827;
}

.mobile-menu nav {
  position: absolute;
  top: 52px;
  right: 0;
  width: min(320px, calc(100vw - 24px));
  display: grid;
  padding: 8px;
  border: 1px solid rgba(5, 9, 19, 0.16);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 20px 50px rgba(5, 9, 19, 0.18);
}

.mobile-menu nav a {
  min-height: 48px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  border-radius: 5px;
  color: #111827;
  font-weight: 650;
  text-decoration: none;
}

.mobile-menu nav a:hover,
.mobile-menu nav a:focus-visible {
  background: #f0f4f3;
}

@media (max-width: 1120px) {
  .header-shell {
    grid-template-columns: auto 1fr auto;
    gap: 16px;
  }

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

  .header-actions {
    justify-self: end;
  }

  .mobile-menu {
    display: block;
  }
}

@media (max-width: 680px) {
  .header-shell {
    min-height: 64px;
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .brand-mark,
  .brand-mark img {
    width: 36px;
    height: 36px;
  }

  .brand-tagline,
  .header-actions {
    display: none;
  }

  .mobile-menu {
    grid-column: 2;
  }
}