:root {
            --primary: #ffd800; /* 鲜黄 */
            --primary-hover: #e5c200;
            --dark: #111111; /* 深黑 */
            --dark-sub: #1e1e1e;
            --light: #ffffff;
            --gray-bg: #f9f9f9;
            --gray-border: #e5e5e5;
            --text-dark: #222222;
            --text-muted: #666666;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --transition: all 0.3s ease;
        }

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

        body {
            font-family: var(--font-main);
            color: var(--text-dark);
            background-color: var(--light);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--gray-border);
        }

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

        .section-title h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            position: relative;
            display: inline-block;
            padding-bottom: 10px;
        }

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

        .section-title p {
            color: var(--text-muted);
            margin-top: 15px;
            font-size: 16px;
        }

        /* 鲜黄风格按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 700;
            border-radius: 6px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }

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

        .btn-primary:hover {
            background-color: var(--dark);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
        }

        .btn-outline {
            background-color: transparent;
            border: 2px solid var(--dark);
            color: var(--dark);
        }

        .btn-outline:hover {
            background-color: var(--dark);
            color: var(--light);
            transform: translateY(-2px);
        }

        /* 顶部导航 */
        header {
            background-color: var(--light);
            border-bottom: 1px solid var(--gray-border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
        }

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

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

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

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            color: var(--dark);
        }

        .nav-links {
            display: flex;
            gap: 20px;
            list-style: none;
        }

        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-dark);
            padding: 5px 0;
            position: relative;
        }

        .nav-links a:hover, .nav-links a.active {
            color: var(--dark);
            font-weight: 700;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: var(--transition);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

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

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
        }

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

        /* 1. Hero首屏 - 严格无图，使用精美几何和高对比度色彩 */
        .hero-section {
            background: linear-gradient(135deg, #111 0%, #1e1e1e 100%);
            color: var(--light);
            padding: 100px 0;
            position: relative;
            overflow: hidden;
            border-bottom: none;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 216, 0, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: center;
        }

        .hero-text h1 {
            font-size: 40px;
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
        }

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

        .hero-text p {
            font-size: 18px;
            color: #ccc;
            margin-bottom: 30px;
            max-width: 600px;
        }

        .hero-btns {
            display: flex;
            gap: 15px;
            margin-bottom: 40px;
        }

        .hero-btns .btn-outline {
            border-color: var(--primary);
            color: var(--primary);
        }

        .hero-btns .btn-outline:hover {
            background-color: var(--primary);
            color: var(--dark);
        }

        .hero-badge-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .hero-badge {
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.15);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: #ddd;
        }

        /* 纯CSS交互控制台（右侧装饰，无图片） */
        .hero-console {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            padding: 24px;
            font-family: monospace;
            font-size: 13px;
            color: #a9b7c6;
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
            position: relative;
        }

        .console-header {
            display: flex;
            gap: 6px;
            margin-bottom: 15px;
        }

        .console-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
        }

        .dot-red { background-color: #ff5f56; }
        .dot-yellow { background-color: #ffbd2e; }
        .dot-green { background-color: #27c93f; }

        .console-body p {
            margin-bottom: 8px;
        }

        .console-keyword { color: #cc7832; }
        .console-string { color: #6a8759; }
        .console-number { color: #6897bb; }
        .console-comment { color: #808080; }

        .console-output {
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px solid rgba(255,255,255,0.1);
            color: var(--primary);
        }

        /* 2. 关于我们 + 平台介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--dark);
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 15px;
            font-size: 15px;
        }

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

        .about-feature-card {
            background-color: var(--gray-bg);
            border-left: 4px solid var(--primary);
            padding: 15px;
            border-radius: 0 8px 8px 0;
        }

        .about-feature-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 5px;
        }

        .about-feature-card p {
            font-size: 13px;
            margin: 0;
        }

        /* 3. 全平台AIGC服务 + 4. 一站式AIGC制作 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background-color: var(--light);
            border: 1px solid var(--gray-border);
            border-radius: 8px;
            padding: 30px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            border-color: var(--primary);
        }

        .service-icon {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: bold;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .service-tag {
            background-color: var(--gray-bg);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 12px;
            color: var(--text-dark);
        }

        /* 5. 全行业解决方案 + 6. 全国服务网络 */
        .bg-light-sec {
            background-color: var(--gray-bg);
        }

        .solution-tabs-wrap {
            margin-top: 30px;
        }

        .solution-tabs {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }

        .solution-tab-btn {
            padding: 10px 20px;
            background-color: var(--light);
            border: 1px solid var(--gray-border);
            border-radius: 20px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .solution-tab-btn.active, .solution-tab-btn:hover {
            background-color: var(--primary);
            border-color: var(--primary);
            color: var(--dark);
        }

        .solution-content-card {
            background-color: var(--light);
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            padding: 40px;
            display: none;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .solution-content-card.active {
            display: grid;
        }

        .solution-detail h3 {
            font-size: 24px;
            margin-bottom: 15px;
        }

        .solution-detail ul {
            list-style-type: none;
            margin: 20px 0;
        }

        .solution-detail li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 10px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .solution-detail li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
        }

        .network-map {
            background-color: var(--dark);
            color: var(--light);
            padding: 30px;
            border-radius: 8px;
            text-align: center;
        }

        .network-map h4 {
            color: var(--primary);
            margin-bottom: 10px;
        }

        /* 7. 标准化AIGC流程 + 8. 技术标准 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }

        .process-step {
            background-color: var(--light);
            border: 1px solid var(--gray-border);
            padding: 24px;
            border-radius: 8px;
            position: relative;
            transition: var(--transition);
        }

        .process-step:hover {
            border-color: var(--primary);
        }

        .step-num {
            font-size: 36px;
            font-weight: 800;
            color: rgba(255, 216, 0, 0.3);
            position: absolute;
            top: 10px;
            right: 15px;
        }

        .process-step h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
            position: relative;
            z-index: 2;
        }

        .process-step p {
            font-size: 13px;
            color: var(--text-muted);
            position: relative;
            z-index: 2;
        }

        /* 9. 客户案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .case-card {
            background-color: var(--light);
            border: 1px solid var(--gray-border);
            border-radius: 8px;
            overflow: hidden;
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .case-img-wrap {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background-color: #eee;
        }

        .case-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-badge {
            position: absolute;
            top: 10px;
            left: 10px;
            background-color: var(--primary);
            color: var(--dark);
            padding: 4px 10px;
            font-size: 12px;
            font-weight: 700;
            border-radius: 4px;
        }

        .case-info {
            padding: 20px;
        }

        .case-info h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .case-info p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* 10. 对比评测 - 包含高分展示 */
        .review-section {
            background-color: var(--dark);
            color: var(--light);
        }

        .review-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .review-score-big {
            font-size: 64px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 10px;
        }

        .review-stars {
            color: var(--primary);
            font-size: 24px;
            margin-bottom: 10px;
        }

        .review-header p {
            color: #ccc;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 8px;
            border: 1px solid rgba(255,255,255,0.1);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 600px;
        }

        .comparison-table th, .comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            font-size: 14px;
        }

        .comparison-table th {
            background-color: rgba(255,255,255,0.05);
            font-weight: 700;
            color: var(--light);
        }

        .comparison-table td {
            color: #ddd;
        }

        .comparison-table tr:hover {
            background-color: rgba(255,255,255,0.02);
        }

        .highlight-col {
            color: var(--primary) !important;
            font-weight: 700;
            background-color: rgba(255, 216, 0, 0.05);
        }

        /* 12. Token比价参考 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .token-card {
            background-color: var(--light);
            border: 1px solid var(--gray-border);
            border-radius: 8px;
            padding: 24px;
            text-align: center;
            transition: var(--transition);
        }

        .token-card:hover {
            border-color: var(--primary);
            box-shadow: 0 5px 15px rgba(0,0,0,0.02);
        }

        .token-card h4 {
            font-size: 18px;
            margin-bottom: 10px;
        }

        .token-price {
            font-size: 28px;
            font-weight: 800;
            color: var(--dark);
            margin: 15px 0;
        }

        .token-price span {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: normal;
        }

        .token-features {
            list-style: none;
            margin: 15px 0 20px 0;
            padding: 0;
            font-size: 13px;
            color: var(--text-muted);
        }

        .token-features li {
            margin-bottom: 8px;
        }

        /* 13. 职业技术培训 + 14. 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .training-card {
            background-color: var(--gray-bg);
            border-top: 4px solid var(--dark);
            padding: 24px;
            border-radius: 0 0 8px 8px;
            transition: var(--transition);
        }

        .training-card:hover {
            border-top-color: var(--primary);
            background-color: var(--light);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .training-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .training-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .training-badge {
            display: inline-block;
            background-color: var(--primary);
            color: var(--dark);
            font-size: 11px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 4px;
        }

        /* 15. 帮助中心 + 16. 常见用户问题 FAQ + 17. 常见问题自助排查 + 18. AI术语百科 */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--gray-border);
            background-color: var(--light);
            border-radius: 6px;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-question {
            padding: 18px 20px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: var(--gray-bg);
            transition: var(--transition);
        }

        .faq-question:hover {
            background-color: #fffdec;
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            color: var(--text-muted);
            font-size: 14px;
            background-color: var(--light);
        }

        .faq-item.active .faq-answer {
            padding: 18px 20px;
            max-height: 200px;
            border-top: 1px solid var(--gray-border);
        }

        .faq-question::after {
            content: "+";
            font-size: 20px;
            font-weight: bold;
            color: var(--text-muted);
        }

        .faq-item.active .faq-question::after {
            content: "−";
        }

        .wiki-box {
            background-color: #fffdeb;
            border: 1px solid #ffe96e;
            padding: 24px;
            border-radius: 8px;
            margin-top: 40px;
        }

        .wiki-box h4 {
            margin-bottom: 10px;
            color: var(--dark);
        }

        .wiki-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 15px;
        }

        .wiki-tag {
            background-color: var(--light);
            border: 1px solid var(--gray-border);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
        }

        /* 19. 行业资讯 / 知识库 - 最新文章列表 */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .news-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .news-item {
            border-bottom: 1px solid var(--gray-border);
            padding-bottom: 15px;
        }

        .news-item a {
            font-size: 15px;
            font-weight: 600;
            display: block;
            margin-bottom: 5px;
        }

        .news-item a:hover {
            color: var(--primary-hover);
        }

        .news-meta {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 20. 联系我们 + 11. 智能需求匹配 (表单) */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .contact-form-wrap {
            background-color: var(--gray-bg);
            padding: 40px;
            border-radius: 8px;
            border: 1px solid var(--gray-border);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--gray-border);
            border-radius: 4px;
            background-color: var(--light);
            font-family: inherit;
            font-size: 14px;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
        }

        .contact-info-card {
            background-color: var(--dark);
            color: var(--light);
            padding: 40px;
            border-radius: 8px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-info-list {
            list-style: none;
            margin-top: 30px;
        }

        .contact-info-list li {
            margin-bottom: 20px;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .contact-qrcode {
            margin-top: 30px;
            text-align: center;
            background: rgba(255,255,255,0.05);
            padding: 20px;
            border-radius: 8px;
        }

        .contact-qrcode img {
            width: 120px;
            height: 120px;
            margin: 0 auto 10px auto;
        }

        /* 21. 加盟代理 */
        .partner-section {
            background: linear-gradient(135deg, var(--primary) 0%, #fff099 100%);
            color: var(--dark);
            text-align: center;
        }

        .partner-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .partner-wrap h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .partner-wrap p {
            font-size: 16px;
            margin-bottom: 30px;
            opacity: 0.9;
        }

        /* 用户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }

        .comment-card {
            background-color: var(--light);
            border: 1px solid var(--gray-border);
            padding: 24px;
            border-radius: 8px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
        }

        .comment-text {
            font-size: 14px;
            color: var(--text-muted);
            font-style: italic;
            margin-bottom: 15px;
        }

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

        .comment-avatar {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            color: var(--dark);
        }

        .comment-user-info h5 {
            font-size: 14px;
            font-weight: 700;
        }

        .comment-user-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 30px 0;
            border-top: 4px solid var(--primary);
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo-desc h4 {
            color: var(--light);
            font-size: 18px;
            margin-bottom: 15px;
        }

        .footer-col h4 {
            color: var(--light);
            font-size: 16px;
            margin-bottom: 20px;
        }

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

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

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-contact p {
            margin-bottom: 10px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-links {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: rgba(255,255,255,0.5);
            font-size: 12px;
        }

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

        /* 浮动客服入口 */
        .float-contact {
            position: fixed;
            right: 20px;
            bottom: 20px;
            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;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }

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

        .float-btn-qr {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: var(--light);
            padding: 10px;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            display: none;
            border: 1px solid var(--gray-border);
            width: 140px;
            text-align: center;
        }

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

        .float-btn-qr span {
            font-size: 12px;
            color: var(--dark);
            font-weight: 700;
        }

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

        /* 移动端响应式适配 */
        @media (max-width: 992px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--light);
                border-bottom: 1px solid var(--gray-border);
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }

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

            .menu-toggle {
                display: flex;
            }

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

            .about-grid {
                grid-template-columns: 1fr;
            }

            .solution-content-card {
                grid-template-columns: 1fr;
            }

            .contact-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }

            .hero-text h1 {
                font-size: 30px;
            }

            .hero-btns {
                flex-direction: column;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }