/* 头部区域样式 */
.header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    padding: 10px 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 头部内容容器 */
.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}

/* Logo容器样式 */
.logo-container {
    margin-right: 30px;
    flex-shrink: 0;
}

/* Logo图片样式 */
.logo {
    height: 60px;
    width: auto;
    max-width: 180px;
}

/* 主导航菜单样式 */
.main-nav {
    display: flex;
    flex-grow: 1;
    justify-content: center;
}

/* 移动端菜单按钮 - 默认隐藏 */
.mobile-menu-btn {
    display: none;
    font-size: 24px;
    cursor: pointer;
    padding: 10px;
    color: #163762;
}

/* 响应式设计 - 平板和手机端 */
@media (max-width: 1024px) {
    .logo {
        height: 50px;
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 0 15px;
    }
    
    .logo {
        height: 40px;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .main-nav {
        justify-content: flex-end;
    }
}