/* =========================================================
   新增样式：二级菜单 + 侧边悬浮窗（不改动原有样式，全部为新增选择器）
   原位置：HTML head 内 <style>...</style>
   ========================================================= */

/* 顶栏“Services”二级菜单（hover 展示，可停留点击） */
.header-area .main-nav .nav li.has-sub { position: relative; }
.header-area .main-nav .nav li.has-sub > a { position: relative; }

.header-area .main-nav .nav li.has-sub .sub-menu {
  position: fixed;              /* 关键：脱离 nav 容器，直接铺满屏幕 */
  left: 0;
  right: 0;
  width: 100vw;                 /* 从最左到最右 */
  top: 86px;                    /* 顶栏下面（如果你头部高度不同，这个数改一下即可） */

  background: #ffffff;
  border-radius: 0;
  box-shadow: 0 18px 45px rgba(0,0,0,0.10);

  padding: 18px 28px;
  margin-top: 0;

  display: flex;                /* 关键：每个 sub-group 一列 */
  gap: 18px;
  align-items: flex-start;

  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .15s ease, transform .15s ease, visibility .15s ease;
  z-index: 9999;
}

.header-area .main-nav .nav li.has-sub:hover .sub-menu,
.header-area .main-nav .nav li.has-sub:focus-within .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.header-area .main-nav .nav li.has-sub .sub-menu .sub-group {
  list-style: none;
  padding: 6px 10px;
  flex: 1;                      /* 一列占一份 */
  min-width: 220px;             /* 防止太窄 */
  max-width: 420px;             /* 防止太宽 */
}

.header-area .main-nav .nav li.has-sub .sub-menu .sub-title {
  font-weight: 700;
  cursor: default;
  padding: 6px 6px 10px 6px;
  color: #111;
  user-select: none;
  border-bottom: 1px solid rgba(0,0,0,0.08);
  margin-bottom: 8px;
}

.header-area .main-nav .nav li.has-sub .sub-menu .sub-items { list-style: none; padding: 0 0 0 0; margin: 0; }
.header-area .main-nav .nav li.has-sub .sub-menu .sub-items li { margin: 0; }

.header-area .main-nav .nav li.has-sub .sub-menu .sub-link {
  display: block;
  padding: 8px 10px;
  border-radius: 10px;
  color: inherit;
  text-decoration: none;
  line-height: 1.25;
  white-space: normal;
}

.header-area .main-nav .nav li.has-sub .sub-menu .sub-link:hover {
  background: rgba(0,0,0,0.04);
}

/* 侧边悬浮窗 */
.side-float {
  position: fixed;
  right: 18px;
  bottom: 90px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.side-float .sf-item,
.side-float a.sf-item {
  color: inherit;
  text-decoration: none;
}

.side-float .sf-item {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: #ffffff;
  box-shadow: 0 10px 25px rgba(0,0,0,0.10);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  user-select: none;
}

.side-float .sf-item svg { width: 22px; height: 22px; }

.side-float .sf-item .sf-tip {
  position: absolute;
  right: 58px;
  top: 50%;
  transform: translateY(-50%);
  background: #ffffff;
  border-radius: 14px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.10);
  padding: 12px 14px;
  min-width: 210px;
  opacity: 0;
  visibility: hidden;
  transform-origin: right center;
  transition: opacity .15s ease, visibility .15s ease;
  pointer-events: none;
}

.side-float .sf-item:hover .sf-tip,
.side-float .sf-item:focus-within .sf-tip {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.side-float .sf-tip .sf-title { font-weight: 600; margin-bottom: 6px; }
.side-float .sf-tip .sf-small { font-size: 12px; opacity: .8; margin-top: 6px; }

.side-float .sf-tip .sf-qr {
  width: 120px;
  height: 120px;
  border-radius: 12px;
  overflow: hidden;
  background: #f2f2f2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.side-float .sf-item.sf-top { display: none; } /* 默认隐藏，滚动后展示 */
.side-float .sf-item.sf-top.is-show { display: flex; }