* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
}

:root {
    --primary-color: #c00;
    --accent-color: #f80;
    --bottom-icon: #f80;
    --light-color: #f5f5f5;
    --light-bg: #f8f9fa;
    --dark-color: #333;
    --text-color: #444;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --transition: all 0.3s ease;
    --border-color: #e0e0e0;
}

a {
    text-decoration: none; 
    color: #333; 
    transition: color 0.3s ease;
}

body {
    background-color: #f9f9f9;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 顶部信息栏 - 联系方式右对齐 */
.top-bar {
    background: var(--primary-color);
    color: white;
    padding: 8px 0;
    font-size: 0.9rem;
}

.top-bar-content {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.contact-info {
    display: flex;
    align-items: center;
}

    .contact-info i {
        margin-right: 8px;
        color: #fff;
    }

    .contact-info span {
        margin-left: 20px;
    }

        .contact-info span:first-child {
            margin-left: 0;
        }

/* 头部样式 */
header {
    background: white;
    color: var(--dark-color);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    padding: 15px 0;
}

    .logo img {
        height: 30px;
        margin-right: 10px;
        object-fit: contain;
    }

    .logo h1 {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--primary-color);
    }

/* 桌面端导航右侧功能区 */
.desktop-nav-tools {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-left: 15px;
}

/* 语言图标样式 */
.lang-icon {
    position: relative;
    cursor: pointer;
    color: var(--dark-color);
    font-size: 1.2rem;
    transition: var(--transition);
    padding: 5px;
    border-radius: 4px;
    display:none;
}

    .lang-icon:hover {
        color: var(--primary-color);
        background-color: var(--light-color);
    }

/* 语言切换下拉栏 */
.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    min-width: 120px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    border-radius: 4px;
    padding: 8px 0;
    margin-top: 5px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1001;
}

.lang-icon:hover .lang-dropdown,
.lang-icon.active .lang-dropdown {
    opacity: 1;
    visibility: visible;
}

.lang-dropdown a {
    display: block;
    padding: 8px 15px;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
}

    .lang-dropdown a:hover {
        background-color: var(--light-color);
        color: var(--primary-color);
    }

/* 搜索图标样式 */
.search-icon {
    cursor: pointer;
    color: var(--dark-color);
    font-size: 1.2rem;
    transition: var(--transition);
    padding: 5px;
    border-radius: 4px;
}

    .search-icon:hover {
        color: var(--primary-color);
        background-color: var(--light-color);
    }

/* 搜索层样式 - 仅桌面端使用 */
.desktop-search-overlay {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    z-index: 1000;
    display: none;
    transition: var(--transition);
}

    .desktop-search-overlay.active {
        display: block;
        animation: fadeIn 0.3s ease;
    }

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.desktop-search-overlay .search-container {
    max-width: 600px;
    margin: 0 auto;
    padding: 0 15px;
    display: flex;
    gap: 10px;
}

.desktop-search-overlay input {
    flex: 1;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition);
}

    .desktop-search-overlay input:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 2px var(--light-bg);
    }

.desktop-search-overlay button {
    padding: 10px 20px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
}

    .desktop-search-overlay button:hover {
        background: var(--primary-color);
    }

/* 移动端搜索框样式 */
.mobile-search-box {
    padding: 15px;
    background: white;
    border-top: 1px solid var(--border-color);
    display: none;
}

    .mobile-search-box .search-container {
        display: flex;
        gap: 10px;
    }

    .mobile-search-box input {
        flex: 1;
        padding: 10px 15px;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        font-size: 0.95rem;
        outline: none;
    }

    .mobile-search-box button {
        padding: 10px 20px;
        background: var(--primary-color);
        color: white;
        border: none;
        border-radius: 4px;
        cursor: pointer;
    }

.nav-toggle {
    display: none;
    font-size: 1.5rem;
    width: 20px;
    background: none;
    border: none;
    color: var(--dark-color);
    cursor: pointer;
    z-index: 1001;
}

/* 移动端语言图标 - 靠右对齐 */
.mobile-lang-icon {
    display: none;
    margin-left: auto;
    margin-right: 15px;
}

nav {
    background: white;
    display: flex;
    align-items: center;
}

    nav > ul {
        display: flex;
        list-style: none;
    }

        nav > ul > li {
            position: relative;
        }

            nav > ul > li > a {
                color: var(--dark-color);
                text-decoration: none;
                font-weight: 500;
                padding: 20px 15px;
                display: flex;
                align-items: center;
                transition: var(--transition);
            }

                nav > ul > li > a:hover {
                    color: var(--primary-color);
                }

                nav > ul > li > a .dropdown-icon {
                    margin-left: 5px;
                    font-size: 0.8rem;
                    transition: var(--transition);
                }

            nav > ul > li.has-dropdown > a .dropdown-icon {
                transform: rotate(0deg);
            }

            nav > ul > li.has-dropdown.open > a .dropdown-icon {
                transform: rotate(180deg);
            }

/* 下拉菜单样式 - 基础样式 */
.dropdown-container {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
    border-radius: 0 0 4px 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.4s ease;
    z-index: 100;
    padding: 15px;
    min-width: 200px;
}

    /* 产品下拉菜单3列布局 */
    .dropdown-container.three-columns {
/*        left: -500%;*/
        width: auto;
/*        max-width: 800px;*/
        min-width: 200px;
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
    }

nav > ul > li:hover .dropdown-container {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-section {
    padding: 0 10px;
    margin-bottom: 15px;
}

/* 3列布局时的列宽度 */
.dropdown-container.three-columns .dropdown-section {
    flex: 1;
    min-width: 180px; /* 每列最小宽度 */
    max-width: 250px;
    margin-bottom: 0;
}

.dropdown-section:last-child {
    margin-bottom: 0;
}

.dropdown-section h4 {
    color: var(--primary-color);
    margin-bottom: 10px;
    padding-bottom: 5px;
    border-bottom: 1px solid #eee;
}

.dropdown-section ul {
    list-style: none;
}

    .dropdown-section ul li {
        margin-bottom: 5px;
    }

        .dropdown-section ul li a {
            color: var(--dark-color);
            padding: 8px 0;
            display: block;
            text-decoration: none;
            transition: var(--transition);
            font-size: 0.9rem;
        }

            .dropdown-section ul li a:hover {
                color: var(--primary-color);
                padding-left: 5px;
            }

/* 页面标题区域 */
.page-banner {
    background-size: cover;
    background-position: center;
    color: white;
    padding: 100px 0 60px;
    text-align: center;
}

.page-title {
    background: #fff;
    padding: 20px 0;
    position: relative;
}

.page-title-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.page-title h1 {
    color: white;
    font-size: 1.8rem;
    font-weight: 600;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    list-style: none;
}

    .breadcrumb li {
        margin-right: 10px;
        font-size: 0.9rem;
    }

        .breadcrumb li:not(:last-child):after {
            content: ">";
            margin-left: 10px;
            color: var(--text-light);
        }

    .breadcrumb a {
        color: var(--text-color);
        text-decoration: none;
    }

        .breadcrumb a:hover {
            color: var(--accent-color);
        }

    .breadcrumb li:last-child {
        color: var(--primary-color);
        font-weight: 500;
    }

/* 页脚样式 */
footer {
    background: var(--dark-color);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

    .footer-column h3::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 40px;
        height: 2px;
        background: var(--bottom-icon);
    }

.footer-column ul {
    list-style: none;
}

    .footer-column ul li {
        margin-bottom: 10px;
    }

        .footer-column ul li a {
            color: #ccc;
            text-decoration: none;
            transition: var(--transition);
            font-size: 0.9rem;
        }

            .footer-column ul li a:hover {
                color: white;
                padding-left: 5px;
            }

.footer-contact {
    color: #ccc;
}

    .footer-contact p {
        margin-bottom: 15px;
        display: flex;
        align-items: flex-start;
        font-size: 0.9rem;
    }

    .footer-contact i {
        margin-right: 10px;
        color: var(--bottom-icon);
        margin-top: 4px;
        flex-shrink: 0;
    }

    .footer-contact .address {
        line-height: 1.6;
    }

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

    .social-links i {
        color: var(--bottom-icon);
        flex-shrink: 0;
        margin-right: 0px;
        margin-top: 0px;
    }

    .social-links a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        background: #444;
        color: white;
        border-radius: 50%;
        text-decoration: none;
        transition: var(--transition);
    }

        .social-links a:hover {
            background: #555;
            transform: translateY(-3px);
        }

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    color: #999;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .desktop-nav-tools {
        gap: 15px;
    }

    /* 大屏幕下调整3列宽度 */
    .dropdown-container.three-columns {
        width: 540px;
    }
}

@media (max-width: 768px) {
    .top-bar {
        display: none;
    }

    .nav-toggle {
        display: block;
    }

    .mobile-lang-icon {
        display: block;
    }

    .desktop-nav-tools {
        display: none;
    }

    .desktop-search-overlay {
        display: none !important;
    }

    .logo img {
        height: 45px !important;
        margin-right: 10px;
        object-fit: contain;
    }

    nav {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 80%;
        height: 100vh;
        background: white;
        transition: var(--transition);
        padding: 0;
        overflow-y: auto;
        box-shadow: 5px 0 15px rgba(0, 0, 0, 0.1);
        flex-direction: column;
        align-items: stretch;
        z-index: 1002;
    }

        nav.active {
            left: 0;
        }

        nav > ul {
            flex-direction: column;
        }

            nav > ul > li {
                margin: 0;
                width: 100%;
                border-bottom: 1px solid #f0f0f0;
                position: relative;
            }

                nav > ul > li:last-child {
                    border-bottom: none;
                }

                nav > ul > li > a {
                    padding: 15px 20px;
                    justify-content: space-between;
                    width: calc(100% - 50px);
                }

    .mobile-search-box {
        display: block;
    }

    /* 移动端下拉菜单统一为单列 */
    .dropdown-container,
    .dropdown-container.three-columns {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: #f9f9f9;
        box-shadow: none;
        margin-top: 0;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease;
        padding: 0 15px;
        display: block; /* 取消flex布局 */
    }

    nav > ul > li.open .dropdown-container {
        max-height: 1000px;
        padding: 15px;
    }

    .dropdown-container.three-columns .dropdown-section {
        min-width: 100%; /* 移动端单列 */
        margin-bottom: 15px;
    }

    .dropdown-section {
        padding: 0 5px;
    }

        .dropdown-section ul li a {
            padding: 10px 0;
            color: #666;
        }

    .mobile-dropdown-handler {
        position: absolute;
        right: 0;
        top: 0;
        width: 50px;
        height: 50px;
        z-index: 10;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
    }

        .mobile-dropdown-handler .dropdown-icon {
            transition: transform 0.3s ease;
            display: inline-block;
        }

    nav > ul > li.has-dropdown > a .dropdown-icon {
        display: none;
    }
}

@media (max-width: 576px) {
    .logo h1 {
        font-size: 1.2rem;
    }
}

@media (min-width: 769px) {
    .mobile-dropdown-handler {
        display: none !important;
    }
}


/*分页开始*/
.pagination-container {
    text-align: center;
}

.pagination {
    display: inline-block;
    padding-left: 0;
    margin: 20px 0;
    border-radius: 4px;
}

    .pagination > li {
        display: inline;
    }

        .pagination > li > a,
        .pagination > li > span {
            position: relative;
            float: left;
            padding: 6px 12px;
            margin-left: -1px;
            line-height: 1.428571429;
            text-decoration: none;
            background-color: #ffffff;
            border: 1px solid #dddddd;
        }

        .pagination > li:first-child > a,
        .pagination > li:first-child > span {
            margin-left: 0;
            border-bottom-left-radius: 4px;
            border-top-left-radius: 4px;
        }

        .pagination > li:last-child > a,
        .pagination > li:last-child > span {
            border-top-right-radius: 4px;
            border-bottom-right-radius: 4px;
        }

        .pagination > li > a:hover,
        .pagination > li > span:hover,
        .pagination > li > a:focus,
        .pagination > li > span:focus {
            background-color: #eeeeee;
        }

    .pagination > .active > a,
    .pagination > .active > span,
    .pagination > .active > a:hover,
    .pagination > .active > span:hover,
    .pagination > .active > a:focus,
    .pagination > .active > span:focus {
        z-index: 2;
        color: #ffffff;
        cursor: default;
        background-color: var(--primary-color);
        border-color: var(--primary-color);
    }

    .pagination > .disabled > span,
    .pagination > .disabled > a,
    .pagination > .disabled > a:hover,
    .pagination > .disabled > a:focus {
        color: #999999;
        cursor: not-allowed;
        background-color: #ffffff;
        border-color: #dddddd;
    }

.pagination-lg > li > a,
.pagination-lg > li > span {
    padding: 10px 16px;
    font-size: 18px;
}

.pagination-lg > li:first-child > a,
.pagination-lg > li:first-child > span {
    border-bottom-left-radius: 6px;
    border-top-left-radius: 6px;
}

.pagination-lg > li:last-child > a,
.pagination-lg > li:last-child > span {
    border-top-right-radius: 6px;
    border-bottom-right-radius: 6px;
}

.pagination-sm > li > a,
.pagination-sm > li > span {
    padding: 5px 10px;
    font-size: 12px;
}

.pagination-sm > li:first-child > a,
.pagination-sm > li:first-child > span {
    border-bottom-left-radius: 3px;
    border-top-left-radius: 3px;
}

.pagination-sm > li:last-child > a,
.pagination-sm > li:last-child > span {
    border-top-right-radius: 3px;
    border-bottom-right-radius: 3px;
}

/*分页结束*/