/* 公共样式 */
.nav-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    z-index: 100;
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

.logo span {
    font-size: 20px;
    font-weight: bold;
    color: #333;
}

.nav-menu {
    display: flex;
    gap: 20px;
}

.nav-menu li {
    padding: 5px 15px;
    border-radius: 4px;
    transition: all 0.3s;
}

.nav-menu li:hover,
.nav-menu li.active {
    background-color: #f0f0f0;
}

.user-info a {
    padding: 5px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    transition: all 0.3s;
}

.user-info a:hover {
    background-color: #f0f0f0;
}

footer {
    background-color: #333;
    color: #fff;
    padding: 30px 0;
}

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

.copyright {
    font-size: 14px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: #fff;
    transition: all 0.3s;
}

.footer-links a:hover {
    color: #ddd;
}