/* 导航栏样式 */
.navbar {
    background-color: #2c3e50;
    color: white;
    padding: 0.5rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar .logo img {
    height: 40px;
}

.navbar .menu ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.navbar .menu ul li {
    margin-left: 5px;
}

.navbar .menu ul li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.navbar .menu ul li a:hover {
    color: #3498db;
}

.navbar .hamburger {
    display: none;
    cursor: pointer;
}

.navbar .hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 5px 0;
    transition: all 0.3s;
}

@media (max-width: 768px) {
    .navbar .menu ul {
        display: none;
        flex-direction: column;
        background-color: #34495e;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        padding: 0.5rem 0;
    }

    .navbar .menu ul li {
        margin: 0;
        padding: 0.5rem 1rem;
    }

    .navbar .menu ul li a {
        color: #ecf0f1;
    }

    .navbar .menu ul li a:hover {
        color: #3498db;
        background-color: rgba(255, 255, 255, 0.1);
    }

    .navbar .hamburger {
        display: block;
    }
}

@media (min-width: 769px) {
    .navbar .menu ul {
        display: flex !important;
    }

    .navbar .hamburger {
        display: none !important;
    }
}