.site-navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1.5rem;
  background: rgba(255, 255, 255, 0.72);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.6) inset;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .site-navbar { background: #fff; }
}

.site-navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: #0b2b4a;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.site-brand:hover { color: #1f4e7a; text-decoration: none; }

.site-brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #e9f2fa, #cfe2f5);
  color: #1f4e7a;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.8) inset,
    0 0 0 1px rgba(59, 124, 191, 0.15);
}

.site-brand-text {
  font-size: 0.98rem;
  white-space: nowrap;
}
.site-brand-logo {
  display: block;
  width: 38px;
  height: 38px;
  object-fit: contain;
  flex: 0 0 38px;
}
@media (max-width: 480px) {
  .site-brand { gap: .45rem; }
  .site-brand-logo { width: 32px; height: 32px; flex-basis: 32px; }
  .site-brand-text { font-size: .9rem; }
}

.site-nav-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.site-nav-menu > li { position: relative; }

.site-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.9rem;
  border-radius: 0.75rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #435e78;
  text-decoration: none;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.site-nav-link:hover {
  background: rgba(11, 43, 74, 0.06);
  color: #0b2b4a;
  text-decoration: none;
}
.site-nav-link.is-active {
  background: rgba(11, 43, 74, 0.08);
  color: #0b2b4a;
}
.site-nav-link i:first-child {
  font-size: 0.98rem;
  color: #7b98b3;
  transition: color 0.15s;
}
.site-nav-link:hover i:first-child,
.site-nav-link.is-active i:first-child {
  color: #3b7cbf;
}

.site-nav-toggle .site-nav-caret {
  font-size: 0.7rem;
  color: #8ba0b8;
  margin-left: 0.1rem;
}

.site-nav-signout:hover {
  background: rgba(176, 42, 42, 0.08);
  color: #b02a2a;
}
.site-nav-signout:hover i:first-child { color: #b02a2a; }

.site-dropdown {
  border: 1px solid #e5edf5;
  border-radius: 0.9rem;
  box-shadow: 0 12px 28px -14px rgba(0, 30, 60, 0.25);
  padding: 0.4rem;
  min-width: 190px;
  margin-top: 0.4rem;
}
.site-dropdown .dropdown-item {
  border-radius: 0.6rem;
  padding: 0.55rem 0.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: #435e78;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background 0.15s, color 0.15s;
}
.site-dropdown .dropdown-item i {
  color: #7b98b3;
  font-size: 0.95rem;
  width: 16px;
  text-align: center;
}
.site-dropdown .dropdown-item:hover,
.site-dropdown .dropdown-item:focus {
  background: #f0f5fa;
  color: #0b2b4a;
}
.site-dropdown .dropdown-item:hover i { color: #3b7cbf; }

@media (max-width: 768px) {
  .site-navbar { padding: 0.6rem 0.9rem; }
  .site-nav-link {
    padding: 0.5rem 0.7rem;
    font-size: 0.85rem;
  }
}
@media (max-width: 560px) {
  .site-nav-link .nav-label { display: none; }
}

/* Keyboard focus is intentionally shared by every interactive control. */
:where(a, button, input, select, textarea, [role="button"]):focus-visible {
  outline: 3px solid #157a5b;
  outline-offset: 3px;
}

/* Reading-room foundation: calm paper surfaces and clear ink hierarchy. */
body {
  background: #f7f3ea;
  color: #1f2933;
}

.site-navbar {
  background: #fffdf8;
  border-bottom: 1px solid #ddd4c4;
  box-shadow: none;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.site-brand, .site-brand:hover { color: #203a43; }
.site-brand-mark {
  background: #dcece3;
  color: #12664d;
  box-shadow: none;
  border: 1px solid #b9d5c7;
  border-radius: 10px;
}
.site-nav-link { color: #45545b; border-radius: 8px; min-height: 44px; }
.site-nav-link:hover, .site-nav-link.is-active { background: #e9f0eb; color: #173d35; }
.site-nav-link i:first-child, .site-nav-link:hover i:first-child, .site-nav-link.is-active i:first-child { color: #157a5b; }
.site-dropdown { border-radius: 10px; border-color: #d8d0c2; box-shadow: 0 12px 24px rgba(31, 41, 51, .12); }
.site-dropdown .dropdown-item { border-radius: 6px; }

@media (max-width: 640px) {
  .site-navbar { padding: .7rem .85rem .55rem; }
  .site-navbar-inner { display: grid; grid-template-columns: 1fr auto; gap: .55rem; }
  .site-nav-menu {
    grid-column: 1 / -1;
    width: 100%;
    overflow-x: auto;
    padding-bottom: .2rem;
    gap: .35rem;
    -webkit-overflow-scrolling: touch;
  }
  .site-nav-link { padding: .55rem .7rem; font-size: .82rem; }
  .site-nav-link .nav-label { display: inline; }
  .site-nav-toggle .site-nav-caret { display: none; }
}