/* --- 9. Map & Callback --- */
        .map-section {
            position: relative;
            height: 550px;
            background: url('/img/map.jpg') center/cover;
        }

        .contact-form-wrapper {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: rgba(255, 255, 255, 0.95);
            padding: 50px;
            width: 450px;
            border-radius: 10px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
            text-align: center;
            backdrop-filter: blur(5px);
        }

        .contact-form-wrapper h3 {
            margin-bottom: 25px;
            font-size: 24px;
        }

        .form-group {
            margin-bottom: 15px;
        }

        .form-input {
            width: 100%;
            padding: 15px;
            border: 1px solid #ddd;
            border-radius: 5px;
            background: #f9f9f9;
            font-family: inherit;
            font-size: 14px;
            outline: none;
            transition: 0.3s;
        }

        .form-input:focus {
            border-color: var(--primary-orange);
            background: #fff;
        }

        .submit-btn {
            background: #111;
            color: #fff;
            width: 100%;
            padding: 15px;
            border: none;
            cursor: pointer;
            font-weight: 700;
            text-transform: uppercase;
            border-radius: 5px;
            transition: 0.3s;
        }

        .submit-btn:hover {
            background: var(--primary-orange);
        }

        /* --- 10. Footer --- */
        footer {
            background: #111;
            color: #fff;
            padding: 80px 0 30px;
            font-size: 14px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 100px;
            padding-bottom: 50px;
            /* border-bottom: 1px solid #333; */
        }

        .footer-col h4 {
            color: #fff;
            margin-bottom: 25px;
            font-size: 18px;
            position: relative;
            display: inline-block;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -8px;
            width: 30px;
            height: 2px;
            background: var(--primary-orange);
        }
        .footer-col:last-child {
            text-align: left;
            margin-left: auto;
            max-width: 500px;
            padding-left: 250px;
        }

        .footer-col:last-child h4 {
            display: inline-block;
        }

        .footer-col:last-child .footer-info-item {
            justify-content: flex-start;
            align-items: flex-start;
        }

        .footer-col:last-child .footer-info-item span {
            word-wrap: break-word;
            word-break: break-word;
            white-space: normal;
        }

        .footer-info-item {
            display: flex;
            margin-bottom: 15px;
            gap: 15px;
            color: #aaa;
        }

        .footer-info-item i {
            color: var(--primary-orange);
            margin-top: 4px;
        }

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

        .social-icons a {
            width: 36px;
            height: 36px;
            background: #333;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: 0.3s;
            color: #fff;
        }

        .social-icons a:hover {
            background: var(--primary-orange);
            transform: rotate(360deg);
        }

        .copyright {
            text-align: center;
            padding-top: 30px;
            color: #666;
            font-size: 13px;
        }

        /* ================= Reset & Global ================= */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Arial', 'Helvetica', sans-serif;
        }

        .top-bar {
            background: #111;
            color: #ccc;
            font-size: 13px;
            padding: 10px 0;
            border-bottom: 1px solid #222;
        }

        .top-bar .container {
            display: flex;
            justify-content: space-between;
            width: 100%;
        }

        :root {
            --primary-orange: #ff6600;
            --primary-hover: #e65c00;
            --text-dark: #1a1a1a;
            --text-gray: #666;
            --bg-light: #f8f9fa;
            --container-width: 1470px;
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: 'Poppins', sans-serif;
            color: var(--text-dark);
            font-weight: 700;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        ul {
            list-style: none;
        }

        img {
            max-width: 100%;
            display: block;
        }

        .container {
            max-width: var(--container-width) !important;
            margin: 0 auto;
            padding: 0 20px;
        }


        header {
            background: #fff;
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

        .logo {
            font-size: 28px;
            font-weight: 800;
            font-family: 'Poppins', sans-serif;
            display: flex;
            align-items: center;
            color: #000;
            letter-spacing: -1px;
        }

        .logo i {
            color: var(--primary-orange);
            margin-right: 10px;
            font-size: 32px;
        }

        nav ul {
            display: flex;
            gap: 40px;
            align-items: center;
        }

        nav a {
            font-weight: 600;
            font-size: 15px;
            text-transform: uppercase;
            color: #333;
            position: relative;
        }

        nav a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-orange);
            transition: 0.3s;
        }

        nav a:hover::after,
        nav a.active::after {
            width: 100%;
        }

        .btn {
            display: inline-block;
            padding: 12px 30px;
            background: var(--primary-orange);
            color: #fff;
            font-weight: 600;
            border-radius: 4px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            font-size: 14px;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(255, 102, 0, 0.3);
            transition: var(--transition);
        }

        .btn:hover {
            background: var(--primary-hover);
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(255, 102, 0, 0.4);
            color: #fff;
            border: none;
        }

        nav a:hover,
        nav a.active {
            color: var(--primary-orange);
        }

        /* 定义自定义颜色 */



        a {
            text-decoration: none;
            color: inherit;
            transition: 0.2s;
        }

        ul {
            list-style: none;
        }

        img {
            display: block;
            max-width: 100%;
        }

        /* Color Variables */
        :root {
            --primary: #f05b10;
            /* 更接近图片的橙色 */
            --text-dark: #333;
            --text-gray: #666;
            --border: #ddd;
            --bg-gray: #f7f7f7;
            --footer-bg: #1f1f1f;
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        /* Logo 样式已在 header.html 中定义，此处注释掉避免冲突 */
        /* .logo-text {
            font-size: 38px;
            font-weight: 900;
            font-style: italic;
            color: #333;
            letter-spacing: -1px;
        }

        .logo-sub {
            font-size: 24px;
            color: var(--primary);
            font-weight: bold;
            font-family: "Microsoft YaHei", sans-serif;
        } */

        /* Search */
        .search-wrap {
            display: flex;
            width: 250px;
            height: 30px;
            border: 1px solid #ccc;
        }

        .search-wrap input {
            border: none;
            flex: 1;
            padding: 0 10px;
            outline: none;
            font-size: 12px;
        }

        .search-wrap button {
            width: 30px;
            background: #333;
            color: #fff;
            border: none;
            cursor: pointer;
        }

        /* ================= Navigation ================= */
        .main-nav {
            background: #222;
            height: 45px;
        }

        .main-nav .container {
            display: flex;
            justify-content: flex-end;
            height: 100%;
        }

        .main-nav ul {
            display: flex;
            height: 100%;
        }

        .main-nav li a {
            display: flex;
            align-items: center;
            padding: 0 25px;
            color: #fff;
            font-weight: bold;
            font-size: 13px;
            text-transform: uppercase;
            height: 100%;
        }

        .main-nav li a:hover {
            color: var(--primary);
        }

        .main-nav li.active a {
            background: var(--primary);
            color: #fff;
        }

        /* ================= Banner (Showroom Strip) ================= */
        .banner-strip {
            display: flex;
            overflow: hidden;
            height: 280px;
            width: 100%;
        }

        .banner-strip img {
            width: 20%;
            height: 100%;
            object-fit: cover;
            border-right: 1px solid #fff;
        }

        /* ================= Breadcrumb ================= */
        .breadcrumb {
            padding: 15px 0;
            font-size: 12px;
            color: #888;
            border-bottom: 1px solid #eee;
            margin-bottom: 30px;
        }

        .breadcrumb span {
            color: var(--primary);
        }

        /* ================= Main Content Layout ================= */
        .main-layout {
            display: flex;
            gap: 30px;
            margin-bottom: 50px;
        }

        aside {
            width: 370px;
            flex-shrink: 0;
        }

        .content {
            flex-grow: 1;
        }

        /* Sidebar Styles */
        .side-box {
            margin-bottom: 25px;
        }

        .side-header {
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: bold;
            padding: 12px 15px;
            text-transform: uppercase;
        }

        /* Product Categories */
        .cat-list li {
            background: #f0f0f0;
            border-bottom: 1px solid #ddd;
        }

        .cat-list li a {
            display: block;
            padding: 12px 15px;
            font-weight: bold;
            font-size: 13px;
            color: #333;
        }

        .cat-list li a:hover {
            background: #e0e0e0;
        }

        /* Contact Sidebar */
        .contact-side {
            background: #f5f5f5;
            padding: 15px;
            font-size: 12px;
        }

        .con-item {
            display: flex;
            margin-bottom: 12px;
            align-items: flex-start;
            color: #000;
            font-weight: bold;
        }

        .con-item i {
            color: var(--primary);
            width: 20px;
            margin-top: 3px;
        }

        /* News Sidebar */
        .news-side li {
            padding-bottom: 15px;
            margin-bottom: 15px;
            border-bottom: 1px dashed #ddd;
        }

        .news-date {
            font-size: 11px;
            color: #999;
            display: block;
            margin-bottom: 4px;
        }

        .news-head {
            font-weight: bold;
            font-size: 12px;
            line-height: 1.3;
            margin-bottom: 5px;
            color: #222;
        }

        .news-desc {
            font-size: 12px;
            color: #666;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* Right Content Area */
        .section-title {
            font-size: 18px;
            color: var(--primary);
            font-weight: bold;
            border-bottom: 1px solid #eee;
            padding-bottom: 10px;
            margin-bottom: 20px;
        }

        .prod-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .prod-card {
            border: 1px solid #eee;
            text-align: center;
            padding-bottom: 15px;
            transition: 0.3s;
        }

        .prod-card:hover {
            box-shadow: 0 0 15px rgba(0, 0, 0, 0.1);
        }

        .prod-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            margin-bottom: 10px;
        }

        .prod-name {
            font-size: 12px;
            padding: 0 10px;
            height: 34px;
            overflow: hidden;
            line-height: 1.4;
            margin-bottom: 5px;
            color: #333;
        }

        .prod-cat {
            font-size: 11px;
            color: var(--primary);
            font-weight: bold;
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        .btn-detail {
            display: inline-block;
            border: 1px solid #ddd;
            padding: 3px 10px;
            font-size: 11px;
            color: #666;
            border-radius: 2px;
        }

        .btn-detail:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* Pagination */
        .pagination {
            margin-top: 40px;
            display: flex;
            justify-content: center;
            gap: 5px;
        }

        .page-item {
            width: 30px;
            height: 30px;
            border: 1px solid #eee;
            display: flex;
            justify-content: center;
            align-items: center;
            cursor: pointer;
            color: #666;
            font-size: 12px;
        }

        .page-item.active,
        .page-item:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ================= Company Profile ================= */
        .profile-sec {
            border-top: 1px solid #eee;
            padding: 40px 0;
            margin-top: 20px;
        }

        .profile-flex {
            display: flex;
            gap: 30px;
        }

        .video-box {
            flex: 1;
            position: relative;
            cursor: pointer;
            /* 鼠标放上去变成小手，提示可点击 */
            min-height: 300px;
            /* 防止图片裂开时高度塌陷 */
            background: #f0f0f0;
            /* 图片裂开时的背景色 */
        }

        .video-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: brightness(0.9);
        }

        .play-overlay {
            position: absolute;
            bottom: 20px;
            right: 20px;
            background: var(--primary);
            color: #fff;
            padding: 8px 15px;
            border-radius: 20px;
            font-weight: bold;
            font-size: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .prof-content {
            flex: 1.3;
        }

        .prof-sub {
            color: var(--primary);
            font-weight: bold;
            margin-bottom: 10px;
            font-size: 14px;
        }

        .prof-title {
            font-size: 22px;
            color: #333;
            margin-bottom: 15px;
            font-family: "Georgia", serif;
        }

        .prof-text {
            font-size: 12px;
            color: #666;
            line-height: 1.8;
            text-align: justify;
        }

        /* ================= Certificates ================= */
        .cert-sec {
            padding: 30px 0 50px;
        }

        .cert-head {
            color: var(--primary);
            font-size: 16px;
            margin-bottom: 20px;
            text-transform: uppercase;
            font-weight: bold;
        }

        .cert-row {
            display: flex;
            justify-content: space-between;
            gap: 15px;
        }

        .cert-item {
            width: 23%;
            text-align: center;
            border: 1px solid #eee;
            padding: 8px;
            background: #fff;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
        }

        .cert-item img {
            width: 100%;
            height: 440px;
            object-fit: cover;
            padding: 2px;
        }

        /* 模拟证书红框 */
        .cert-name {
            margin-top: 10px;
            font-size: 11px;
            color: #333;
        }

        /* ================= Knowledge Extension ================= */
        .knowledge-sec {
            padding-bottom: 40px;
        }

        .know-title {
            font-size: 16px;
            margin-bottom: 10px;
            color: #333;
        }

        .know-text {
            font-size: 12px;
            color: #666;
            line-height: 1.6;
        }

        /* ================= Footer Complex Layout ================= */
        .footer-wrapper {
            position: relative;
            width: 100%;
        }

        /* 1. Map Background Layer */
        .map-bg {
            height: 400px;
            background: url('https://images.unsplash.com/photo-1524661135-423995f22d0b?ixlib=rb-4.0.3&auto=format&fit=crop&w=1920&q=80') center center;
            background-size: cover;
            opacity: 0.5;
        }

        /* 2. Floating Form (Absolute Centered) */
        .float-form {
            position: absolute;
            top: 50px;
            left: 50%;
            transform: translateX(-50%);
            background: #fff;
            width: 450px;
            padding: 25px 40px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            z-index: 10;
        }

        .form-title {
            font-size: 20px;
            font-weight: 900;
            margin-bottom: 20px;
            color: #000;
        }

        .input-group {
            margin-bottom: 15px;
        }

        .input-group input,
        .input-group textarea {
            width: 100%;
            background: #f2f2f2;
            border: 1px solid #ddd;
            padding: 10px;
            font-size: 12px;
            outline: none;
        }

        .input-group textarea {
            height: 80px;
            resize: none;
        }

        .submit-btn {
            background: #000;
            color: #fff;
            border: none;
            width: 100%;
            padding: 12px;
            font-weight: bold;
            text-transform: uppercase;
            cursor: pointer;
        }

        .submit-btn:hover {
            background: var(--primary);
        }

        /* 3. Black Bottom Info (Overlapping logic) */
        .footer-bottom {
            background: #1a1a1a;
            color: #fff;
            padding-top: 120px;
            /* 让出上面悬浮表单的位置 */
            padding-bottom: 20px;
            margin-top: -150px;
            /* 向上拉，覆盖部分地图 */
            position: relative;
            z-index: 5;
        }

        .footer-cols {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
        }

        /* Left: Brand */
        .ft-left {
            width: 300px;
        }

        .ft-logo {
            font-size: 32px;
            font-weight: 800;
            font-style: italic;
            color: #fff;
            line-height: 1;
        }

        .ft-slogan {
            font-size: 11px;
            color: #aaa;
            margin-top: 5px;
            margin-bottom: 20px;
        }

        .ft-social a {
            color: #fff;
            margin-right: 15px;
            font-size: 14px;
        }

        /* Right: Contact */
        .ft-right {
            width: 350px;
            display: flex;
            gap: 20px;
            justify-content: flex-end;
        }

        .ft-qr {
            background: #fff;
            padding: 5px;
            width: 100px;
            height: 100px;
        }

        .ft-contact {
            font-size: 12px;
            line-height: 2;
            color: #ccc;
        }

        .ft-contact i {
            color: var(--primary);
            margin-right: 8px;
            width: 15px;
            text-align: center;
        }

        .copyright {
            border-top: 1px solid #333;
            margin-top: 30px;
            padding-top: 15px;
            text-align: center;
            color: #666;
            font-size: 11px;
        }

        .mbx {
            font-size: 1rem;
            color: #4d4d4d;
            font-family: 'roboto-bold';
            background: #eee;
            padding: 1.5rem 0;
            margin-bottom: 2rem;
        }

        /* ================= 4. Banner 图片 ================= */
        .banner {
            width: 100%;
            height: 50vh;
            /* 使用报纸/新闻纹理图片 */
            background: url('../img/banners/banner-default.jpg') no-repeat center center;
            background-size: cover;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* 遮罩层让文字更清晰 */
        .banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0.3);
        }

        .banner h1 {
            position: relative;
            font-size: 48px;
            color: #333;
            text-transform: uppercase;
            font-weight: 900;
            letter-spacing: 2px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
            transform: rotate(-3deg);
            /* 模仿图片中的倾斜感 */
        }

        /* 主体布局 */
        .main-container {
            display: grid;
            grid-template-columns: 370px 1fr;
            gap: 40px;
            padding: 40px 10%;
        }

        /* 左侧边栏 */
        .sidebar-box {
            margin-bottom: 30px;
            border: 1px solid var(--border-color);
        }

        .sidebar-title {
            background: var(--primary-orange);
            color: white;
            padding: 15px;
            text-align: center;
            font-size: 20px;
            font-weight: bold;
        }

        .sidebar-menu {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .sidebar-menu li {
            padding: 15px 20px;
            border-bottom: 1px solid var(--border-color);
            background: #f9f9f9;
            cursor: pointer;
        }

        .sidebar-menu li:hover {
            background: #eee;
        }

        .contact-info {
            padding: 20px;
            font-size: 13px;
            line-height: 1.8;
        }

        /* 右侧产品/工厂网格 */
        .factory-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        /* 默认状态：卡片底部的文字标签 */
        .card-label {
            padding: 12px;
            font-size: 14px;
            background: #fff;
            color: #333;
            border-top: 1px solid #eee;
            transition: all 0.3s ease;
            /* 添加平滑过渡效果 */
        }

        /* 悬浮状态：当鼠标移入卡片时，改变标签的背景和文字颜色 */
        .card:hover .card-label {
            background: var(--primary-orange);
            color: white;
        }

        /* 可选：给图片也增加一个微小的缩放效果，增加交互感 */
        .card {
            border: 1px solid #ddd;
            text-align: center;
            overflow: hidden;
            /* 防止图片放大超出边框 */
            cursor: pointer;
        }

        .card img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .card:hover img {
            transform: scale(1.05);
            /* 悬浮时图片轻微放大 */
        }

        /* 分页 */
        .pagination {
            grid-column: 1 / -1;
            display: flex;
            justify-content: flex-end;
            margin-top: 30px;
            gap: 5px;
        }

        .pagination span,
        .pagination a {
            padding: 0;
            border: 1px solid #ddd;
            cursor: pointer;
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            text-decoration: none;
            color: #666;
            transition: all 0.3s ease;
            min-width: 36px;
            height: 36px;
            line-height: 1;
        }
        
        .pagination a:hover {
            background: var(--primary-orange);
            color: #fff;
            border-color: var(--primary-orange);
        }

        /* 下拉菜单样式 */
        .dropdown {
            position: relative;
        }

        .dropdown-menu {
            position: absolute;
            top: 100%;
            left: 0;
            background: #fff;
            min-width: 180px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
            border-radius: 4px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-10px);
            transition: all 0.3s ease;
            z-index: 1000;
            border-top: 3px solid var(--primary-orange);
        }

        .dropdown:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .dropdown-menu a {
            display: block;
            padding: 12px 20px;
            color: #333;
            font-size: 14px;
            font-weight: 500;
            text-transform: none;
            border-bottom: 1px solid #f0f0f0;
            transition: all 0.3s ease;
        }

        .dropdown-menu a:last-child {
            border-bottom: none;
        }

        .dropdown-menu a:hover {
            background: #f8f9fa;
            color: var(--primary-orange);
            padding-left: 25px;
        }

        .dropdown-menu a::after {
            display: none;
        }

        .sidebar-box p {
            line-height: 2;
            color: #333;
            font-size: 14px;
        }

        /* 悬浮侧边栏 */
        .float-sidebar {
            position: fixed;
            right: 0;
            top: 40%;
            z-index: 1001;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .float-btn {
            width: 45px;
            height: 45px;
            background-color: #ff6600;
            color: #fff;
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            font-size: 20px;
            cursor: pointer;
            box-shadow: 0 2px 5px rgba(0,0,0,0.2);
            margin-right: 10px;
            transition: transform 0.3s ease;
        }

        .float-btn:hover {
            transform: scale(1.1);
        }
    


/* ========================================
   Products 页面响应式优化
   ======================================== */

/* 平板及以下 (< 1024px) */
@media (max-width: 1024px) {
    .banner {
        height: 40vh;
    }
    
    .banner h1 {
        font-size: 36px;
    }
    
    .main-container {
        grid-template-columns: 1fr;
        padding: 30px 20px;
    }
    
    aside {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .sidebar-box {
        margin-bottom: 0;
    }
    
    .sidebar-title {
        font-size: 16px;
        padding: 12px;
    }
    
    .sidebar-menu li {
        padding: 12px 15px;
        font-size: 13px;
    }
    
    .sidebar-box h4 {
        font-size: 13px;
        margin: 10px 0;
        line-height: 1.4;
        white-space: normal !important;
        overflow: visible !important;
        text-overflow: clip !important;
    }
    
    .sidebar-box p {
        font-size: 12px;
        line-height: 1.6;
    }
    
    .sidebar-box > div {
        padding: 15px;
    }
    
    .factory-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .profile-flex {
        flex-direction: column;
        gap: 30px;
    }
    
    .video-box {
        width: 100%;
    }
    
    .cert-row {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .cert-item {
        width: 100%;
    }
}

/* 手机端 (< 640px) */
@media (max-width: 640px) {
    .banner {
        height: 30vh;
        min-height: 200px;
    }
    
    .banner h1 {
        font-size: 28px;
        letter-spacing: 1px;
    }
    
    .mbx {
        font-size: 0.875rem;
        padding: 1rem 0;
    }
    
    .main-container {
        padding: 20px 15px;
        gap: 20px;
    }
    
    aside {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .sidebar-box {
        margin-bottom: 0;
    }
    
    .sidebar-title {
        font-size: 15px;
        padding: 10px;
    }
    
    .sidebar-menu li {
        padding: 10px 12px;
        font-size: 12px;
    }
    
    .sidebar-box h4 {
        font-size: 12px;
        margin: 8px 0;
        line-height: 1.3;
        white-space: normal !important;
        overflow: visible !important;
        text-overflow: clip !important;
    }
    
    .sidebar-box p {
        font-size: 11px;
        line-height: 1.5;
    }
    
    .sidebar-box > div {
        padding: 15px;
    }
    
    .factory-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .card {
        margin-bottom: 15px;
    }
    
    .card img {
        height: 250px;
    }
    
    .card-label {
        font-size: 13px;
        padding: 10px;
    }
    
    .profile-sec {
        padding: 40px 0;
    }
    
    .profile-flex {
        flex-direction: column;
        gap: 20px;
    }
    
    .video-box {
        width: 100%;
        min-height: 250px;
    }
    
    .prof-sub {
        font-size: 13px;
    }
    
    .prof-title {
        font-size: 20px;
    }
    
    .prof-text {
        font-size: 13px;
        line-height: 1.7;
    }
    
    .cert-sec {
        padding: 40px 0;
    }
    
    .cert-head {
        font-size: 24px;
        margin-bottom: 30px;
    }
    
    .cert-row {
        display: grid;
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .cert-item {
        width: 100%;
    }
    
    .cert-name {
        font-size: 13px;
    }
    
    .knowledge-sec {
        padding: 40px 0;
    }
    
    .know-title {
        font-size: 24px;
    }
    
    .know-text {
        font-size: 13px;
    }
    
    .pagination {
        gap: 5px;
        margin-top: 30px;
    }
    
    .page-item {
        width: 28px;
        height: 28px;
        font-size: 11px;
    }
}