.system-admin-gate {
    min-height: 100vh;
    display: grid;
    place-items: center;
}

.system-admin-layout {
    min-height: 100vh;
}

.system-admin-sider {
    background: var(--sider-bg) !important;
}

.system-admin-brand {
    color: #fff;
    font-size: 17px;
    font-weight: 700;
    padding: 20px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.system-admin-sider .ant-menu {
    background: transparent;
}

.system-admin-header {
    height: 56px;
    line-height: 1;
    padding: 0 24px;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
}

.system-admin-content {
    padding: 24px;
    background: var(--bg-color);
}

@media (max-width: 768px) {
    .system-admin-content { padding: 12px; }
    .system-admin-header { padding: 0 12px; }
}