/* ====================================================================
   翰灵云 - 悬浮展开的二级下拉导航
   仿图：窄竖向白底圆角面板，纯文字，悬停高亮
   由 JS 动态定位在"关于我们"按钮下方
   ==================================================================== */

.nav-secondary {
  position: fixed;
  z-index: 998;
  width: 136px;          /* 104 + 32，左右各加 16 */
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border: 1px solid rgba(232, 234, 237, 0.9);
  border-radius: 14px;
  box-shadow: 0 12px 32px rgba(15, 27, 45, 0.10);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transition:
    max-height 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.25s ease,
    visibility 0s linear 0.32s;
}

.nav-secondary.is-open {
  max-height: 480px;
  opacity: 1;
  visibility: visible;
  transition:
    max-height 0.32s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.25s ease,
    visibility 0s linear 0s;
}

.nav-secondary__inner {
  padding: 14px 0;
}

/* 标题样式已不再使用 */
.nav-secondary__group-title { display: none; }

/* 纯文字竖向列表 */
.nav-secondary__links {
  display: flex;
  flex-direction: column;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-secondary__link {
  display: block;
  padding: 14px 14px;
  font-size: 14px;
  color: #5a6b85;
  text-decoration: none;
  text-align: center;
  transition: color 0.18s ease, background 0.18s ease;
  border: none;
  background: transparent;
  border-radius: 0;
  transform: none;
  box-shadow: none;
  min-height: 0;
  gap: 0;
  white-space: nowrap;
}

.nav-secondary__link:hover {
  color: #00A1FF;
  background: rgba(0, 161, 255, 0.06);
  transform: none;
  border: none;
  box-shadow: none;
}

.nav-secondary__link-text,
.nav-secondary__link-title,
.nav-secondary__link-desc,
.nav-secondary__link-arrow { /* no-op */ }

@media (max-width: 768px) {
  .nav-secondary { width: 136px; }
}