/* ===== 一级菜单：加粗、大号、左侧蓝色竖条 ===== */
.nav-sidebar > .nav-item > .nav-link {
    font-weight: 600 !important;
    font-size: 15px !important;
    padding: 12px 1rem !important;
    border-left: 3px solid transparent !important;
}
.nav-sidebar > .nav-item > .nav-link > i:first-child {
    font-size: 16px !important;
}
.nav-sidebar > .nav-item.menu-open > .nav-link,
.nav-sidebar > .nav-item > .nav-link.active {
    border-left-color: #2e6ff2 !important;
    background: rgba(46,111,242,.1) !important;
}

/* ===== 二级菜单：大幅右移 + 左侧淡色引导竖线 ===== */
.nav-sidebar > .nav-item > .nav-treeview {
    border-left: 1px dashed #dcdfe6 !important;
    margin-left: 1.2rem !important;
    padding-left: 0 !important;
}
.nav-sidebar > .nav-item > .nav-treeview > .nav-item > .nav-link {
    font-weight: 500 !important;
    font-size: 14px !important;
    padding-left: 1.8rem !important;
}
.nav-sidebar > .nav-item > .nav-treeview > .nav-item > .nav-link > i {
    font-size: 11px !important;
    opacity: .7;
}

/* ===== 三级菜单：再往右移一大截、颜色更浅 ===== */
.nav-sidebar .nav-treeview .nav-treeview {
    border-left: 1px dotted #e4e7ed !important;
    margin-left: 1.5rem !important;
}
.nav-sidebar .nav-treeview .nav-treeview .nav-link {
    font-weight: 400 !important;
    font-size: 13px !important;
    padding-left: 1.6rem !important;
    color: #8a94a6 !important;
}
.nav-sidebar .nav-treeview .nav-treeview .nav-link > i {
    font-size: 9px !important;
    opacity: .6;
}
.nav-sidebar .nav-treeview .nav-treeview .nav-link.active {
    color: #2e6ff2 !important;
    font-weight: 500 !important;
}