.sub-container{max-width:1400px;margin:0 auto;padding:0 20px;box-sizing:border-box}
.sub-layout{display:flex;align-items:flex-start; gap:50px}
.sub-aside{width:260px;flex:0 0 260px}

.sub-sidetitle{border-radius: 10px; height: 100px; font-size:20px;font-weight:800;margin:0 0 12px; background: #5b4474; color:#fff; display: flex; justify-content: center; align-items: center;}

.sub-nav{position:sticky;top:100px}
.sub-nav .item{display:flex;align-items:center;justify-content:space-between;border:1px solid #eee;border-radius:10px;padding:14px 16px;margin-bottom:10px;background:#fff;color:#333;font-size:16px;line-height:1.2;transition:.2s}
.sub-nav .item i{font-size:20px;opacity:.5;transition:.2s}
.sub-nav .item:hover{border-color:#d7c1f0;background:#faf6ff}
.sub-nav .item:hover i{opacity:1;transform:translateX(2px)}
.sub-nav .item.active{border-color:#693A94;background:#f6efff;color:#5b2a8c;font-weight:700}
.sub-nav .item.active i{opacity:1}

.sub-dropdown{margin:-4px auto 16px}
.sub-dd-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;width:100%;max-width:520px;border:1px solid #e5e5ee;border-radius:12px;background:#fff;padding:12px 16px;font-weight:700;color:#333}
.sub-dd-menu{width:100%;max-width:520px;margin:8px auto;border:1px solid #e5e5ee;border-radius:12px;padding:10px}
.sub-dd-menu .dropdown-item{color:#333; font-size: 16px; border-radius: 8px; padding: 10px 20px;}
.sub-dd-menu .dropdown-item.active, .sub-dd-menu .dropdown-item:active{background:#f6efff;color:#5b2a8c}

.sub-dropdown .dropdown-menu{display:none !important; position:absolute; left:50%; transform:translateX(-50%); width:100%; max-width:520px;}
.sub-dropdown .dropdown-menu.show{display:block !important; padding: 10px;}

@media (max-width: 1024px){
  .sub-title{font-size: 20px}
}

@media (max-width:768px){
  
  .sub-dd-btn,.sub-dd-menu{max-width:100%}
}