:root {
            --primary: #E60012;
            --primary-hover: #C8000F;
            --primary-light: #FFEBEC;
            --dark: #1A1A1A;
            --gray-dark: #333333;
            --gray-light: #F8F9FA;
            --border-color: #EAEAEA;
            --text-muted: #666666;
            --container-width: 1200px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--gray-dark);
            background-color: #FFFFFF;
            line-height: 1.6;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

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

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

        /* 顶部导航 */
        .header {
            background-color: #FFFFFF;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .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;
        }

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

        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--gray-dark);
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: #FFFFFF !important;
            padding: 8px 18px;
            border-radius: 4px;
            font-weight: 600;
        }

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

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 4px;
            cursor: pointer;
            background: none;
            border: none;
        }

        .menu-toggle span {
            width: 24px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 2px;
        }

        /* 统一标题组件 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title {
            font-size: 28px;
            color: var(--dark);
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
            font-weight: 700;
        }

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

        .section-subtitle {
            font-size: 15px;
            color: var(--text-muted);
            margin-top: 10px;
        }

        /* Section 通用间距 */
        section {
            padding: 80px 0;
        }

        .bg-light {
            background-color: var(--gray-light);
        }

        /* 1. Hero 首页首屏 (无图片) */
        .hero {
            background: linear-gradient(135deg, #1A1A1A 0%, #0D0D0D 100%);
            color: #FFFFFF;
            padding: 100px 0 120px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(230,0,18,0.15) 0%, transparent 60%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-tag {
            background-color: var(--primary);
            color: #FFFFFF;
            display: inline-block;
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 25px;
            letter-spacing: 1px;
        }

        .hero h1 {
            font-size: 38px;
            line-height: 1.3;
            margin-bottom: 25px;
            font-weight: 800;
        }

        .hero-desc {
            font-size: 18px;
            color: #CCCCCC;
            margin-bottom: 40px;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #FFFFFF;
            padding: 14px 32px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 6px;
            box-shadow: 0 4px 15px rgba(230, 0, 18, 0.4);
        }

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

        .btn-secondary {
            background-color: transparent;
            color: #FFFFFF;
            border: 2px solid #FFFFFF;
            padding: 12px 30px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 6px;
        }

        .btn-secondary:hover {
            background-color: #FFFFFF;
            color: var(--dark);
            transform: translateY(-2px);
        }

        /* 首页特色指标卡片 */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 60px;
        }

        .metric-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 25px 15px;
            transition: all 0.3s;
        }

        .metric-card:hover {
            border-color: var(--primary);
            background: rgba(230, 0, 18, 0.05);
        }

        .metric-card .num {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .metric-card .label {
            font-size: 14px;
            color: #AAAAAA;
        }

        /* 2. 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

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

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 15px;
            text-align: justify;
        }

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

        .about-feature-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .about-feature-item svg {
            color: var(--primary);
            flex-shrink: 0;
            margin-top: 3px;
        }

        .about-feature-item h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 5px;
        }

        .about-feature-item p {
            font-size: 13px;
            color: #888888;
            margin: 0;
        }

        /* 3. 全平台AIGC服务体系 */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 30px;
            transition: all 0.3s;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
            border-color: var(--primary);
        }

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

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

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

        /* 4. 全自动AIGC制作流程 */
        .process-flow {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 30px;
        }

        .process-flow::before {
            content: '';
            position: absolute;
            top: 30px;
            left: 5%;
            right: 5%;
            height: 2px;
            background-color: var(--border-color);
            z-index: 1;
        }

        .process-step {
            width: 18%;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-num {
            width: 60px;
            height: 60px;
            background-color: #FFFFFF;
            border: 3px solid var(--primary);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 20px;
            transition: all 0.3s;
        }

        .process-step:hover .step-num {
            background-color: var(--primary);
            color: #FFFFFF;
        }

        .process-step h4 {
            font-size: 16px;
            margin-bottom: 8px;
            font-weight: 700;
        }

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

        /* 5. 全行业解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .solution-card {
            background-color: #FFFFFF;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 15px rgba(0,0,0,0.03);
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }

        .solution-card:hover {
            border-color: var(--primary);
            transform: translateY(-3px);
        }

        .solution-info {
            padding: 25px;
        }

        .solution-info h4 {
            font-size: 18px;
            margin-bottom: 12px;
            font-weight: 700;
        }

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

        .solution-tag {
            display: inline-block;
            background-color: var(--gray-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 4px;
        }

        /* 6. 全国服务网络 */
        .network-section {
            background: linear-gradient(135deg, #FFF9FA 0%, #FFFFFF 100%);
        }

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

        .network-map-visual {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 30px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.02);
        }

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

        .city-tag {
            background-color: var(--gray-light);
            border: 1px solid var(--border-color);
            padding: 10px;
            text-align: center;
            border-radius: 4px;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.3s;
        }

        .city-tag:hover {
            background-color: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }

        /* 7. 标准化服务全流程 */
        .timeline {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            padding: 20px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 2px;
            background-color: var(--border-color);
            transform: translateX(-50%);
        }

        .timeline-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 40px;
            position: relative;
        }

        .timeline-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .timeline-badge {
            width: 16px;
            height: 16px;
            background-color: var(--primary);
            border: 4px solid #FFFFFF;
            border-radius: 50%;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            box-shadow: 0 0 0 4px rgba(230, 0, 18, 0.1);
        }

        .timeline-panel {
            width: 45%;
            background-color: #FFFFFF;
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
        }

        .timeline-panel h4 {
            font-size: 16px;
            margin-bottom: 8px;
            color: var(--dark);
            font-weight: 700;
        }

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

        /* 8. 技术标准 */
        .specs-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .spec-card {
            background-color: #FFFFFF;
            border-top: 4px solid var(--primary);
            border-radius: 0 0 8px 8px;
            padding: 30px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.03);
        }

        .spec-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .spec-list {
            list-style: none;
        }

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

        .spec-list li::before {
            content: '✓';
            color: var(--primary);
            position: absolute;
            left: 0;
            font-weight: bold;
        }

        /* 9. 客户案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .case-item {
            background-color: #FFFFFF;
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }

        .case-img-container {
            width: 100%;
            max-height: 250px;
            overflow: hidden;
        }

        .case-info {
            padding: 25px;
            flex: 1;
        }

        .case-meta {
            font-size: 12px;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        .case-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .case-desc {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 10. 对比评测 */
        .table-responsive {
            overflow-x: auto;
            background-color: #FFFFFF;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
            border: 1px solid var(--border-color);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

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

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

        .comparison-table tr:hover td {
            background-color: var(--primary-light);
        }

        .highlight-col {
            background-color: rgba(230, 0, 18, 0.02);
            font-weight: 600;
        }

        .rating-badge {
            background-color: var(--primary);
            color: #FFFFFF;
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 700;
            display: inline-block;
        }

        /* 12. Token比价参考 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .token-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 25px 20px;
            text-align: center;
            transition: all 0.3s;
        }

        .token-card.featured {
            border-color: var(--primary);
            box-shadow: 0 4px 15px rgba(230,0,18,0.1);
            transform: scale(1.03);
        }

        .token-model-name {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .token-price {
            margin-bottom: 15px;
        }

        .token-price .price {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
        }

        .token-price .unit {
            font-size: 12px;
            color: var(--text-muted);
        }

        .token-status {
            font-size: 12px;
            background-color: var(--gray-light);
            color: var(--gray-dark);
            padding: 4px 8px;
            border-radius: 4px;
            display: inline-block;
        }

        .token-card.featured .token-status {
            background-color: var(--primary-light);
            color: var(--primary);
        }

        /* 13. 职业技术培训 & 14. 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .training-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 25px 15px;
            text-align: center;
            transition: all 0.3s;
        }

        .training-card:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
            transform: translateY(-2px);
        }

        .training-icon {
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 15px;
        }

        .training-card h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .training-card p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 15. 帮助中心 */
        .help-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .help-box {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 30px;
        }

        .help-box h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .help-box h4 svg {
            color: var(--primary);
        }

        .help-box p {
            font-size: 14px;
            color: var(--text-muted);
        }

        /* 16. FAQ & 17. 自助排查 */
        .faq-section {
            background-color: var(--gray-light);
        }

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

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

        .faq-question {
            padding: 18px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            transition: background-color 0.2s;
        }

        .faq-question:hover {
            background-color: var(--primary-light);
        }

        .faq-icon-arrow {
            width: 10px;
            height: 10px;
            border-right: 2px solid var(--text-muted);
            border-bottom: 2px solid var(--text-muted);
            transform: rotate(45deg);
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon-arrow {
            transform: rotate(-135deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            background-color: #FAFAFA;
        }

        .faq-answer-inner {
            padding: 20px 24px;
            font-size: 14px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            line-height: 1.6;
        }

        /* 18. 网站术语百科 */
        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .wiki-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 8px;
        }

        .wiki-card h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .wiki-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        /* 19. 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            transition: all 0.3s;
        }

        .news-card:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 15px rgba(0,0,0,0.03);
        }

        .news-info {
            padding: 20px;
        }

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .news-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .news-link {
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

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

        .comment-card {
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 30px;
            position: relative;
        }

        .comment-text {
            font-size: 14px;
            color: var(--text-muted);
            font-style: italic;
            margin-bottom: 20px;
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

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

        .comment-user-info h5 {
            font-size: 14px;
            font-weight: 700;
            color: var(--dark);
        }

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

        /* 11. 智能需求匹配 & 20. 联系我们 */
        .contact-section {
            background-color: var(--gray-light);
        }

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

        .contact-info-wrap {
            padding-right: 20px;
        }

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

        .contact-details {
            margin-bottom: 30px;
        }

        .contact-item {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 15px;
            font-size: 15px;
        }

        .contact-item svg {
            color: var(--primary);
            flex-shrink: 0;
        }

        .kefu-container {
            display: flex;
            align-items: center;
            gap: 20px;
            background: #FFFFFF;
            padding: 15px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            margin-top: 30px;
        }

        .kefu-qr {
            width: 100px;
            height: 100px;
            border: 1px solid var(--border-color);
            padding: 5px;
            background: #FFF;
        }

        .kefu-desc h5 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 5px;
        }

        .kefu-desc p {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 表单样式 */
        .form-card {
            background-color: #FFFFFF;
            padding: 40px;
            border-radius: 8px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
            border: 1px solid var(--border-color);
        }

        .form-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 25px;
            color: var(--dark);
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            margin-bottom: 15px;
        }

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

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 5px;
            color: var(--dark);
        }

        .form-control {
            width: 100%;
            padding: 10px 14px;
            font-size: 14px;
            border: 1px solid var(--border-color);
            border-radius: 4px;
            background-color: #FFFFFF;
            transition: border-color 0.3s;
        }

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

        textarea.form-control {
            resize: vertical;
            min-height: 100px;
        }

        .form-btn {
            background-color: var(--primary);
            color: #FFFFFF;
            border: none;
            width: 100%;
            padding: 12px;
            font-size: 15px;
            font-weight: 700;
            border-radius: 4px;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(230,0,18,0.2);
            transition: all 0.3s;
        }

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

        /* 友情链接与页脚 */
        .footer {
            background-color: var(--dark);
            color: #FFFFFF;
            padding: 60px 0 30px;
            font-size: 13px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo {
            margin-bottom: 15px;
        }

        .footer-about p {
            color: #AAAAAA;
            margin-bottom: 15px;
        }

        .footer-title {
            font-size: 14px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .footer-links {
            list-style: none;
        }

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

        .footer-links a {
            color: #AAAAAA;
        }

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

        .friend-links {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            color: #888888;
        }

        .friend-links-title {
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #AAAAAA;
        }

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

        .friend-links-wrap a {
            color: #888888;
        }

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

        .copyright-area {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #888888;
        }

        /* 侧边悬浮 */
        .floating-kefu {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            border-radius: 8px;
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
        }

        .floating-kefu:hover {
            background-color: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
        }

        .floating-qr-pop {
            position: absolute;
            bottom: 70px;
            right: 0;
            background-color: #FFFFFF;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            border-radius: 8px;
            padding: 15px;
            width: 150px;
            display: none;
            text-align: center;
        }

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

        .floating-qr-pop span {
            font-size: 11px;
            color: var(--gray-dark);
            display: block;
        }

        .floating-kefu:hover .floating-qr-pop {
            display: block;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .grid-3, .specs-grid, .help-grid, .news-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solutions-grid, .token-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #FFFFFF;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
            }

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

            .menu-toggle {
                display: flex;
            }

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

            .hero h1 {
                font-size: 28px;
            }

            .process-flow {
                flex-direction: column;
                gap: 30px;
            }

            .process-flow::before {
                display: none;
            }

            .process-step {
                width: 100%;
            }

            .timeline::before {
                left: 20px;
            }

            .timeline-item {
                flex-direction: row !important;
                justify-content: flex-start;
                padding-left: 45px;
            }

            .timeline-badge {
                left: 20px;
                transform: translateX(-50%);
            }

            .timeline-panel {
                width: 100%;
            }

            .grid-3, .specs-grid, .help-grid, .news-grid, .comments-grid, .solutions-grid, .token-grid, .training-grid, .wiki-grid {
                grid-template-columns: 1fr;
            }

            .form-row {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .copyright-area {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
        }