/* Header Styles */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* 确保团队页面的header与首页完全一致 */
.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 40px;
    transition: transform 0.3s ease;
}

.logo:hover img {
    transform: scale(1.05);
}

.main-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav li {
    margin-left: 30px;
}

.main-nav a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #ff6b6b;
    transition: width 0.3s ease;
}

.main-nav a:hover::after {
    width: 100%;
}

.main-nav a.active {
    color: #ff6b6b;
}

.main-nav a.active::after {
    width: 100%;
}

/* Mobile Menu */
.mobile-menu-button {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-button span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: #333;
    margin: 5px 0;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: white;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .main-nav.active {
        max-height: 500px;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    }

    .main-nav ul {
        flex-direction: column;
        padding: 20px;
    }

    .main-nav li {
        margin: 15px 0;
    }

    .mobile-menu-button {
        display: block;
    }

    .mobile-menu-button.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-button.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-button.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
}