/* 全站統一：回到上一頁 / 登出 */
.yz-global-nav{
  position:sticky;
  top:0;
  z-index:9999;
  box-sizing:border-box;
  width:min(calc(100% - 24px),980px);
  margin:12px auto 0;
  padding:10px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px;
  background:#fff;
  border:1px solid #e5e7eb;
  border-radius:18px;
  box-shadow:0 10px 26px rgba(15,23,42,.08);
}
body.admin-wide-page .yz-global-nav,
body.admin-home-page .yz-global-nav{
  width:min(calc(100% - 24px),1680px);
}
.yz-nav-btn{
  appearance:none;
  -webkit-appearance:none;
  border:0;
  border-radius:14px;
  padding:13px 14px;
  min-height:48px;
  color:#fff!important;
  -webkit-text-fill-color:#fff!important;
  font-size:16px;
  font-weight:900;
  line-height:1.2;
  text-align:center;
  cursor:pointer;
  box-shadow:none;
}
.yz-nav-back{background:#334155!important;}
.yz-nav-back:active{background:#1f2937!important;}
.yz-nav-logout{background:#dc2626!important;}
.yz-nav-logout:active{background:#b91c1c!important;}
.yz-nav-btn:focus-visible{outline:3px solid rgba(59,130,246,.35);outline-offset:2px;}
@media(max-width:560px){
  .yz-global-nav{
    width:calc(100% - 20px);
    margin-top:10px;
    padding:8px;
    gap:8px;
    border-radius:16px;
  }
  .yz-nav-btn{
    min-height:46px;
    padding:12px 10px;
    border-radius:13px;
    font-size:15px;
  }
}