/* 响应式样式 */

/* 大型设备 (大型笔记本和台式机, 1200px 及以上) */
@media (min-width: 1200px) {
    .header-container, 
    main, 
    .footer-container {
        max-width: 1140px;
    }
}

/* 中型设备 (笔记本电脑, 992px 及以上) */
@media (max-width: 1199px) {
    .header-container, 
    main, 
    .footer-container {
        max-width: 960px;
    }
}

/* 小型设备 (平板电脑, 768px 及以上) */
@media (max-width: 991px) {
    .header-container, 
    main, 
    .footer-container {
        max-width: 720px;
    }
    
    .section {
        padding: 1.5rem;
    }
    
    .section h2 {
        font-size: 1.8rem;
    }
    
    .footer-container {
        flex-direction: column;
    }
    
    .footer-content {
        margin-right: 0;
        margin-bottom: 2rem;
    }
    
    .language-switch {
        position: static;
        background: transparent;
        padding: 0;
        margin-left: 20px;
    }
}

/* 菜单切换按钮样式 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    position: fixed;
    left: 20px;
    top: 20px;
    z-index: 1000;
}

.menu-toggle .bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: #333;
    transition: all 0.3s ease-in-out;
}

/* 超小设备 (手机, 576px 及以上) */
@media (max-width: 767px) {
    .header-container, 
    main, 
    .footer-container {
        max-width: 540px;
    }
    
    .header-container {
        flex-direction: column;
        padding: 1rem;
        position: relative;
    }
    
    .logo {
        margin-bottom: 1rem;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .menu-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .menu-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .nav-menu {
        flex-direction: column;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-in-out;
    }
    
    .nav-menu.active {
        max-height: 300px;
    }
    
    nav a {
        margin: 0.5rem 0;
        padding: 0.5rem;
        text-align: center;
        width: 100%;
    }
    
    .language-switch {
        position: fixed;
        right: 20px;
        top: 20px;
        z-index: 1000;
        background: rgba(255,255,255,0.9);
        padding: 5px 10px;
        border-radius: 4px;
    }
    
    .section {
        padding: 1rem;
    }
    
    .section h2 {
        font-size: 1.5rem;
    }
    
    .table-container {
        overflow-x: auto;
        margin-bottom: 1rem;
    }
    
    /* 表格转换为卡片布局 */
    table {
        display: block;
        width: 100%;
        min-width: 0;
    }
    
    table thead {
        display: none;
    }
    
    table tbody {
        display: block;
    }
    
    table tr {
        display: block;
        margin-bottom: 1.5rem;
        padding: 1rem;
        background: #fff;
        border-radius: 8px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        border: 1px solid #ddd;
    }
    
    table td {
        display: block;
        padding: 0.5rem 0;
        text-align: right;
        border: none;
        position: relative;
        padding-left: 35%;
        word-break: break-word;
        overflow-wrap: break-word;
        max-width: 100%;
    }
    
    table td:before {
        content: attr(data-label);
        position: absolute;
        left: 1rem;
        width: 30%;
        padding-right: 1rem;
        font-weight: bold;
        text-align: left;
        color: var(--primary-color);
        word-break: break-word;
    }
    
    table td a {
        word-break: break-all;
    }
}

/* 极小设备 (小型手机, 575px 以下) */
@media (max-width: 575px) {
    main {
        padding: 1rem;
    }
    
    .section {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .table-container {
        overflow-x: auto;
        margin-bottom: 1rem;
    }
}