:root {
            --primary: #FFD700;
            --primary-hover: #E6B800;
            --dark: #111111;
            --dark-light: #222222;
            --gray-light: #F8F9FA;
            --gray-border: #EAEAEA;
            --text-main: #333333;
            --text-muted: #666666;
            --container-width: 1200px;
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
            color: var(--text-main);
            background-color: #FFFFFF;
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        ul {
            list-style: none;
        }

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

        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        .section-padding {
            padding: 80px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title h2 {
            font-size: 2.2rem;
            color: var(--dark);
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
            font-weight: 800;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        .section-title p {
            margin-top: 15px;
            color: var(--text-muted);
            font-size: 1.1rem;
        }

        /* 按钮样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-weight: 700;
            border-radius: 8px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            font-size: 1rem;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--dark);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
        }

        .btn-dark {
            background-color: var(--dark);
            color: #FFFFFF;
        }

        .btn-dark:hover {
            background-color: #333333;
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
        }

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            z-index: 1000;
            backdrop-filter: blur(10px);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

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

        .ai-page-logo {
            height: 40px;
            width: auto;
        }

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

        .nav-link {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--dark);
            padding: 5px 10px;
        }

        .nav-link:hover {
            color: var(--primary-hover);
        }

        .nav-btn {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            border: none;
            background: none;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            transition: var(--transition);
        }

        /* 首屏 Hero - 无图片设计 */
        .hero {
            padding: 160px 0 100px 0;
            background: linear-gradient(135deg, #111111 0%, #222222 100%);
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,215,0,0.08) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 10;
            max-width: 850px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 900;
            line-height: 1.3;
            margin-bottom: 25px;
        }

        .hero h1 span {
            color: var(--primary);
        }

        .hero p {
            font-size: 1.25rem;
            color: #CCCCCC;
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 50px;
        }

        .hero-badge-container {
            display: flex;
            justify-content: center;
            gap: 15px;
            flex-wrap: wrap;
        }

        .hero-badge {
            background-color: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-badge i {
            color: var(--primary);
        }

        /* 数据指标卡片 */
        .stats-bar {
            background-color: var(--primary);
            color: var(--dark);
            padding: 30px 0;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
            position: relative;
            z-index: 20;
            margin-top: -30px;
            border-radius: 12px;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }

        .stat-item h3 {
            font-size: 2rem;
            font-weight: 800;
        }

        .stat-item p {
            font-size: 0.95rem;
            font-weight: 600;
            opacity: 0.8;
        }

        /* 关于我们 */
        .about-section {
            background-color: var(--gray-light);
        }

        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--dark);
            font-weight: 700;
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .about-feature-item {
            background: #FFFFFF;
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
        }

        .about-feature-item h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .about-feature-item p {
            font-size: 0.9rem;
            margin-bottom: 0;
        }

        .about-visual {
            position: relative;
        }

        .about-visual img {
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }

        /* 全平台AIGC服务 */
        .services-section {
            background-color: #FFFFFF;
        }

        .platforms-box {
            background: var(--dark);
            color: #FFFFFF;
            padding: 40px;
            border-radius: 12px;
            margin-top: 40px;
        }

        .platforms-box h3 {
            text-align: center;
            font-size: 1.5rem;
            margin-bottom: 30px;
            color: var(--primary);
        }

        .platform-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .platform-tag {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 8px 18px;
            border-radius: 6px;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .platform-tag:hover {
            background: var(--primary);
            color: var(--dark);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* 一站式AIGC制作 */
        .production-section {
            background-color: var(--gray-light);
        }

        .production-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .production-card {
            background: #FFFFFF;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
            transition: var(--transition);
            border: 1px solid var(--gray-border);
        }

        .production-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 30px rgba(0,0,0,0.08);
        }

        .production-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .production-card-body {
            padding: 25px;
        }

        .production-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .production-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 15px;
        }

        .production-features {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .production-features span {
            background-color: rgba(255, 215, 0, 0.15);
            color: #8A6D00;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        /* 全行业解决方案 */
        .solutions-section {
            background-color: #FFFFFF;
        }

        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
        }

        .solution-card {
            padding: 30px;
            border-radius: 12px;
            background: var(--gray-light);
            border-top: 4px solid var(--dark);
            transition: var(--transition);
        }

        .solution-card:hover {
            border-top-color: var(--primary);
            background: #FFFFFF;
            box-shadow: 0 8px 25px rgba(0,0,0,0.05);
            transform: translateY(-3px);
        }

        .solution-card h3 {
            font-size: 1.25rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .solution-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 全国服务网络 */
        .network-section {
            background-color: var(--gray-light);
        }

        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: center;
        }

        .network-map-box {
            background: #FFFFFF;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.02);
            text-align: center;
        }

        .network-map-box .map-placeholder {
            height: 300px;
            background: #EAEAEA;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-weight: 600;
            border: 2px dashed #CCCCCC;
        }

        .network-cities {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
        }

        .city-tag {
            background: #FFFFFF;
            padding: 15px;
            border-radius: 8px;
            text-align: center;
            border: 1px solid var(--gray-border);
            transition: var(--transition);
        }

        .city-tag:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
        }

        .city-tag h4 {
            color: var(--dark);
            margin-bottom: 5px;
        }

        .city-tag p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 标准化AIGC流程 与 技术标准 */
        .process-section {
            background-color: #FFFFFF;
        }

        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto 60px auto;
        }

        .timeline::after {
            content: '';
            position: absolute;
            width: 4px;
            background-color: var(--gray-border);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -2px;
        }

        .timeline-item {
            padding: 10px 40px;
            position: relative;
            background-color: inherit;
            width: 50%;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            right: -10px;
            background-color: #FFFFFF;
            border: 4px solid var(--primary);
            top: 15px;
            border-radius: 50%;
            z-index: 1;
        }

        .left {
            left: 0;
        }

        .right {
            left: 50%;
        }

        .right::after {
            left: -10px;
        }

        .timeline-content {
            padding: 20px 30px;
            background-color: var(--gray-light);
            position: relative;
            border-radius: 8px;
        }

        .timeline-content h3 {
            font-size: 1.2rem;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .timeline-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 技术标准表格 */
        .tech-standards {
            max-width: 900px;
            margin: 0 auto;
            overflow-x: auto;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            border: 1px solid var(--gray-border);
        }

        .tech-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            background: #FFFFFF;
        }

        .tech-table th, .tech-table td {
            padding: 15px 20px;
            border-bottom: 1px solid var(--gray-border);
        }

        .tech-table th {
            background-color: var(--dark);
            color: #FFFFFF;
            font-weight: 700;
        }

        .tech-table tr:last-child td {
            border-bottom: none;
        }

        .tech-table tr:nth-child(even) {
            background-color: var(--gray-light);
        }

        /* 客户案例中心 */
        .cases-section {
            background-color: var(--gray-light);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }

        .case-item {
            background: #FFFFFF;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
            border: 1px solid var(--gray-border);
        }

        .case-item-img {
            height: 280px;
            overflow: hidden;
        }

        .case-item-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .case-item:hover .case-item-img img {
            transform: scale(1.05);
        }

        .case-item-body {
            padding: 30px;
        }

        .case-item-body h3 {
            font-size: 1.4rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .case-item-body p {
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .case-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid var(--gray-border);
            padding-top: 15px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 对比评测 */
        .review-section {
            background-color: #FFFFFF;
        }

        .review-header-card {
            background: linear-gradient(135deg, var(--dark) 0%, #222222 100%);
            color: #FFFFFF;
            padding: 40px;
            border-radius: 12px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 30px;
            margin-bottom: 40px;
        }

        .review-score-box {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .big-score {
            font-size: 4rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .stars-box {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .stars {
            color: var(--primary);
            font-size: 1.5rem;
        }

        .stars-text {
            font-size: 0.95rem;
            color: #CCCCCC;
        }

        .review-summary {
            max-width: 600px;
        }

        .review-summary h3 {
            font-size: 1.5rem;
            margin-bottom: 10px;
            color: #FFFFFF;
        }

        .review-summary p {
            color: #BBBBBB;
        }

        .comparison-table-wrapper {
            overflow-x: auto;
            border-radius: 8px;
            border: 1px solid var(--gray-border);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background: #FFFFFF;
        }

        .comparison-table th, .comparison-table td {
            padding: 18px 20px;
            border-bottom: 1px solid var(--gray-border);
            text-align: center;
        }

        .comparison-table th {
            font-weight: 700;
            background: var(--gray-light);
            color: var(--dark);
        }

        .comparison-table td:first-child, .comparison-table th:first-child {
            text-align: left;
            font-weight: 700;
        }

        .comparison-table tbody tr:hover {
            background-color: rgba(255, 215, 0, 0.05);
        }

        .highlight-col {
            background-color: rgba(255, 215, 0, 0.08);
            font-weight: 700;
        }

        /* 职业技术培训 & 人工智能培训 */
        .training-section {
            background-color: var(--gray-light);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .training-card {
            background: #FFFFFF;
            border-radius: 10px;
            padding: 25px 20px;
            text-align: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            border: 1px solid var(--gray-border);
            transition: var(--transition);
        }

        .training-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: 0 8px 25px rgba(0,0,0,0.06);
        }

        .training-icon {
            width: 60px;
            height: 60px;
            background: var(--primary);
            color: var(--dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px auto;
            font-size: 1.5rem;
            font-weight: 800;
        }

        .training-card h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .training-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 帮助中心 & FAQ */
        .faq-section {
            background-color: #FFFFFF;
        }

        .faq-grid {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--gray-border);
            padding: 18px 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
            cursor: pointer;
            padding: 10px 0;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .faq-item.active .faq-question::after {
            content: '-';
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-answer p {
            padding: 10px 0;
        }

        /* 自助排查与术语百科 */
        .trouble-glossary-section {
            background-color: var(--gray-light);
        }

        .tg-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .tg-card {
            background: #FFFFFF;
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--gray-border);
        }

        .tg-card h3 {
            font-size: 1.5rem;
            margin-bottom: 25px;
            color: var(--dark);
            border-left: 4px solid var(--primary);
            padding-left: 15px;
        }

        .trouble-list li {
            margin-bottom: 15px;
        }

        .trouble-list h4 {
            font-size: 1.05rem;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .trouble-list p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* 行业资讯 / 知识库 */
        .news-section {
            background-color: #FFFFFF;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            background: var(--gray-light);
            border-radius: 8px;
            padding: 25px;
            border: 1px solid var(--gray-border);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-card h3 {
            font-size: 1.2rem;
            color: var(--dark);
            margin-bottom: 15px;
            line-height: 1.4;
        }

        .news-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .news-btn {
            font-size: 0.9rem;
            color: var(--dark);
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .news-card .news-btn:hover {
            color: var(--primary-hover);
        }

        /* 用户评论 */
        .comments-section {
            background-color: var(--gray-light);
        }

        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .comment-card {
            background: #FFFFFF;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.02);
            border: 1px solid var(--gray-border);
            position: relative;
        }

        .comment-text {
            font-style: italic;
            color: var(--text-main);
            margin-bottom: 20px;
            font-size: 0.95rem;
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .comment-avatar {
            width: 45px;
            height: 45px;
            background: var(--primary);
            color: var(--dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .comment-info h4 {
            font-size: 1rem;
            color: var(--dark);
        }

        .comment-info p {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* 智能需求匹配与联系我们 */
        .contact-section {
            background-color: #FFFFFF;
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
        }

        .form-box {
            background: var(--gray-light);
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--gray-border);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .form-group-full {
            grid-column: span 2;
        }

        .form-label {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--dark);
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--gray-border);
            border-radius: 6px;
            font-size: 0.95rem;
            outline: none;
            background: #FFFFFF;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.25);
        }

        select.form-control {
            appearance: none;
            background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            background-size: 16px;
        }

        .contact-info-box {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .info-card {
            background: var(--gray-light);
            padding: 30px;
            border-radius: 12px;
            border-left: 6px solid var(--primary);
        }

        .info-card h3 {
            font-size: 1.25rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .info-card p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 15px;
        }

        .qr-item {
            text-align: center;
            background: #FFFFFF;
            padding: 15px;
            border-radius: 8px;
            border: 1px solid var(--gray-border);
            width: 130px;
        }

        .qr-item img {
            width: 100px;
            height: 100px;
            margin: 0 auto 8px auto;
        }

        .qr-item p {
            font-size: 0.75rem;
            margin-bottom: 0;
            font-weight: 700;
        }

        /* 友情链接与页脚 */
        footer {
            background-color: var(--dark);
            color: #FFFFFF;
            padding: 60px 0 20px 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h3 {
            font-size: 1.15rem;
            margin-bottom: 20px;
            color: var(--primary);
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background-color: var(--primary);
        }

        .footer-col p {
            font-size: 0.9rem;
            color: #BBBBBB;
            margin-bottom: 10px;
        }

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

        .footer-links a {
            color: #CCCCCC;
            font-size: 0.9rem;
        }

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 5px;
        }

        .friend-links {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            margin-bottom: 20px;
            text-align: center;
        }

        .friend-links h4 {
            font-size: 0.95rem;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .friend-links-list {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friend-links-list a {
            color: #AAAAAA;
            font-size: 0.85rem;
        }

        .friend-links-list a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: #888888;
        }

        /* 浮动客服 */
        .floating-contact {
            position: fixed;
            right: 20px;
            bottom: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: var(--dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            cursor: pointer;
            position: relative;
        }

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

        .float-qr {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #FFFFFF;
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.15);
            display: none;
            width: 150px;
            text-align: center;
        }

        .float-qr img {
            width: 120px;
            height: 120px;
            margin-bottom: 5px;
        }

        .float-qr p {
            font-size: 0.75rem;
            color: var(--dark);
            margin: 0;
        }

        .float-btn:hover .float-qr {
            display: block;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .production-grid, .news-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solutions-grid, .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #FFFFFF;
                padding: 20px;
                box-shadow: 0 5px 15px rgba(0,0,0,0.1);
                gap: 15px;
            }

            .nav-menu.active {
                display: flex;
            }

            .menu-toggle {
                display: flex;
            }

            .about-grid, .network-grid, .tg-grid, .contact-grid {
                grid-template-columns: 1fr;
            }

            .timeline::after {
                left: 31px;
            }

            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }

            .timeline-item::after {
                left: 21px;
            }

            .right {
                left: 0%;
            }

            .hero h1 {
                font-size: 2rem;
            }

            .production-grid, .solutions-grid, .news-grid, .comments-grid, .training-grid, .cases-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }