/* 导航栏样式 */
.nav-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: #1a004b;
    z-index: 100;
    display: flex;
    align-items: center;
    padding: 0 20px;
}

/* Logo 样式 */
.nav-logo {
    height: 40px;
    width: auto;
    margin-right: auto;
}

@media (max-width: 768px) {
    .nav-logo {
        height: 35px;
    }
}