/* 内部管理入口 - logo 和「首页」之间居中（flex 撑开法）
   2026-06-25 老板定稿：点击区 68x32 横向药丸 */
.nav-mid {
  flex: 0 0 140px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav-secret-portal {
  color: #fff;
  opacity: 0;
  font-size: 14px;
  text-decoration: none;
  width: 68px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  transition: opacity 0.3s ease, background 0.3s ease;
  cursor: pointer;
  user-select: none;
  flex-shrink: 0;
}
.nav-secret-portal:hover,
.nav-secret-portal:focus-visible {
  opacity: 0.85;
  background: rgba(0, 0, 0, 0.06);
  outline: none;
}