.nav-visibility-section {
  margin-top: 4px;
}

.nav-visibility-help {
  margin: -6px 0 18px;
  color: #718087;
  font-size: 13px;
  line-height: 1.7;
}

.nav-switch-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.nav-switch-item {
  position: relative;
  display: flex;
  min-height: 76px;
  padding: 14px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid #e3e8ea;
  border-radius: 12px;
  background: #fafcfc;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.nav-switch-item:hover {
  border-color: rgba(1, 152, 175, 0.35);
  background: #fff;
  box-shadow: 0 6px 18px rgba(20, 54, 63, 0.07);
}

.nav-switch-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 3px;
}

.nav-switch-copy strong {
  color: #263b42;
  font-size: 14px;
}

.nav-switch-copy small {
  color: #8a989d;
  font-size: 11px;
}

.nav-switch-item input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.nav-switch-control {
  position: relative;
  width: 46px;
  height: 26px;
  flex: 0 0 46px;
  border-radius: 999px;
  background: #c9d1d4;
  transition: background 0.22s ease, box-shadow 0.22s ease;
}

.nav-switch-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 6px rgba(20, 54, 63, 0.22);
  transition: transform 0.24s cubic-bezier(0.22, 1, 0.36, 1);
}

.nav-switch-item input:checked + .nav-switch-control {
  background: linear-gradient(135deg, #0198af, #01b8a0);
  box-shadow: 0 4px 12px rgba(1, 152, 175, 0.24);
}

.nav-switch-item input:checked + .nav-switch-control .nav-switch-thumb {
  transform: translateX(20px);
}

.nav-switch-item input:focus-visible + .nav-switch-control {
  outline: 3px solid rgba(1, 152, 175, 0.18);
  outline-offset: 3px;
}

.about-view .message-mailbox-card {
  display: grid;
  min-height: 118px;
  padding: 18px;
  grid-template-columns: 46px 1fr auto;
  align-items: center;
  gap: 12px;
  color: #fff;
  background:
    radial-gradient(circle at 85% 15%, rgba(255, 255, 255, 0.18), transparent 34%),
    linear-gradient(145deg, #058ca1, #075766);
  text-decoration: none;
  transition: transform 0.28s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.28s ease;
}

.about-view .message-mailbox-card:hover {
  color: #fff;
  box-shadow: 0 14px 30px rgba(7, 87, 102, 0.2);
  transform: translateY(-3px);
}

.about-view .message-mailbox-icon {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  font-size: 22px;
}

.about-view .message-mailbox-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 3px;
}

.about-view .message-mailbox-copy strong {
  font-size: 16px;
}

.about-view .message-mailbox-copy small {
  color: rgba(255, 255, 255, 0.7);
  font-size: 12px;
}

.about-view .message-mailbox-arrow {
  font-size: 20px;
  transition: transform 0.25s ease;
}

.about-view .message-mailbox-card:hover .message-mailbox-arrow {
  transform: translateX(4px);
}

@media (max-width: 1100px) {
  .nav-switch-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .nav-switch-grid {
    grid-template-columns: 1fr;
  }

  .about-view .sidebar > .sidebar-block:nth-child(2) {
    display: block !important;
  }
}