:root {
            --primary: #1a52ff;
            --secondary: #ff2e93;
            --accent: #ffd000;
            --bg: #fdfdfd;
            --dark: #0f172a;
            --light-gray: #f8fafc;
            --mid-gray: #e2e8f0;
            --text-dark: #1e293b;
            --border-width: 3px;
            --shadow-offset: 6px;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
        }

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

        /* 统一Neo-brutalist设计规范 */
        .brutal-card {
            background: #ffffff;
            border: var(--border-width) solid var(--dark);
            box-shadow: var(--shadow-offset) var(--shadow-offset) 0px var(--dark);
            transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }

        .brutal-card:hover {
            transform: translate(-3px, -3px);
            box-shadow: calc(var(--shadow-offset) + 3px) calc(var(--shadow-offset) + 3px) 0px var(--dark);
        }

        .brutal-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--dark);
            background: var(--accent);
            border: var(--border-width) solid var(--dark);
            box-shadow: 4px 4px 0px var(--dark);
            cursor: pointer;
            text-decoration: none;
            transition: all 0.15s ease;
        }

        .brutal-btn:hover {
            transform: translate(-2px, -2px);
            box-shadow: 6px 6px 0px var(--dark);
            background: var(--secondary);
            color: #fff;
        }

        .brutal-btn:active {
            transform: translate(2px, 2px);
            box-shadow: 2px 2px 0px var(--dark);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

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

        .section-badge {
            display: inline-block;
            padding: 6px 14px;
            background: var(--secondary);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            border: 2px solid var(--dark);
            margin-bottom: 15px;
            text-transform: uppercase;
            box-shadow: 2px 2px 0px var(--dark);
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--dark);
            margin-top: 5px;
        }

        /* 顶部导航 */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #ffffff;
            border-bottom: var(--border-width) solid var(--dark);
        }

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo-area img {
            height: 48px;
            width: auto;
        }

        .nav-links {
            display: flex;
            list-style: none;
            align-items: center;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 700;
            font-size: 0.95rem;
            padding: 6px 12px;
            transition: all 0.15s ease;
        }

        .nav-links a:hover {
            background: var(--accent);
            border: 2px solid var(--dark);
            box-shadow: 2px 2px 0px var(--dark);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: 2px solid var(--dark);
            padding: 8px;
            cursor: pointer;
        }

        .mobile-toggle span {
            display: block;
            width: 24px;
            height: 3px;
            background: var(--dark);
            margin: 4px 0;
        }

        /* 1. Hero 首屏 - 无图片 */
        .hero {
            background: radial-gradient(circle at 10% 20%, rgba(26, 82, 255, 0.08) 0%, rgba(255, 46, 147, 0.05) 90.2%);
            padding: 100px 0;
            position: relative;
            overflow: hidden;
        }

        .hero-content {
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        h1.hero-title {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        h1.hero-title span {
            background: var(--accent);
            padding: 2px 8px;
            border: 3px solid var(--dark);
            box-shadow: 4px 4px 0px var(--dark);
            display: inline-block;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: #475569;
            margin-bottom: 40px;
            font-weight: 500;
        }

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

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 60px;
        }

        .stat-item {
            padding: 20px;
            background: #fff;
            border: 3px solid var(--dark);
            box-shadow: 5px 5px 0px var(--dark);
            text-align: center;
        }

        .stat-val {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--primary);
        }

        .stat-lbl {
            font-size: 0.9rem;
            font-weight: 700;
            color: #64748b;
            margin-top: 5px;
        }

        /* 2. 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .about-p {
            font-size: 1.05rem;
            color: #334155;
            margin-bottom: 20px;
            line-height: 1.7;
        }

        .about-highlight {
            border-left: 5px solid var(--secondary);
            padding-left: 15px;
            margin: 25px 0;
            font-weight: 600;
            color: var(--dark);
        }

        .about-card {
            background: var(--accent);
            border: var(--border-width) solid var(--dark);
            box-shadow: 6px 6px 0px var(--dark);
            padding: 30px;
        }

        .about-card h4 {
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 15px;
        }

        .about-card ul {
            list-style: none;
        }

        .about-card ul li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .about-card ul li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--secondary);
            font-weight: 900;
        }

        /* 3. 全平台AIGC服务 */
        .platforms-box {
            background: #fff;
            border: var(--border-width) solid var(--dark);
            box-shadow: var(--shadow-offset) var(--shadow-offset) 0px var(--dark);
            padding: 40px;
        }

        .platforms-desc {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 30px auto;
            font-size: 1.1rem;
            font-weight: 600;
        }

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

        .platform-tag {
            padding: 8px 16px;
            border: 2px solid var(--dark);
            background: var(--light-gray);
            font-weight: 700;
            font-size: 0.95rem;
            transition: all 0.1s ease;
            box-shadow: 2px 2px 0px var(--dark);
        }

        .platform-tag:hover {
            background: var(--secondary);
            color: #fff;
            transform: translate(-1px, -1px);
            box-shadow: 3px 3px 0px var(--dark);
        }

        /* 4. 一站式AIGC制作 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            padding: 30px;
        }

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 15px;
        }

        .service-card h3 {
            font-size: 1.35rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .service-card p {
            color: #475569;
            font-size: 0.95rem;
            margin-bottom: 15px;
        }

        .service-badge {
            display: inline-block;
            padding: 4px 10px;
            background: var(--accent);
            border: 1.5px solid var(--dark);
            font-weight: 700;
            font-size: 0.8rem;
        }

        /* 5. 全行业解决方案 */
        .solutions-tabs {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .tab-btn {
            padding: 10px 20px;
            border: 2px solid var(--dark);
            background: #fff;
            font-weight: 700;
            cursor: pointer;
            box-shadow: 3px 3px 0px var(--dark);
        }

        .tab-btn.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 1px 1px 0px var(--dark);
            transform: translate(2px, 2px);
        }

        .solution-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .solution-pane {
            display: none;
        }

        .solution-pane.active {
            display: grid;
        }

        .sol-left h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 15px;
        }

        .sol-left p {
            color: #475569;
            margin-bottom: 25px;
        }

        .sol-features {
            list-style: none;
        }

        .sol-features li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 10px;
            font-weight: 700;
        }

        .sol-features li::before {
            content: "✦";
            position: absolute;
            left: 0;
            color: var(--secondary);
        }

        .sol-right {
            padding: 20px;
            background: var(--light-gray);
            border: 3px solid var(--dark);
            box-shadow: 6px 6px 0px var(--dark);
        }

        .sol-metric-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .sol-metric-card {
            background: #fff;
            border: 2px solid var(--dark);
            padding: 15px;
            text-align: center;
        }

        /* 6. 全国服务网络 */
        .network-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .network-map-graphic {
            background: var(--accent);
            border: 3px solid var(--dark);
            box-shadow: 6px 6px 0px var(--dark);
            padding: 40px;
            text-align: center;
            min-height: 280px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
        }

        .network-stat-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            width: 100%;
            margin-top: 20px;
        }

        .net-hub-card {
            background: #fff;
            border: 2px solid var(--dark);
            padding: 10px;
            font-weight: 800;
        }

        /* 7. 标准化AIGC流程 */
        .steps-container {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .step-card {
            position: relative;
            padding: 25px 20px;
            text-align: center;
        }

        .step-num {
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 40px;
            background: var(--secondary);
            color: #fff;
            font-weight: 900;
            border: 2px solid var(--dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 2px 2px 0px var(--dark);
        }

        .step-card h4 {
            margin-top: 15px;
            margin-bottom: 10px;
            font-weight: 800;
            font-size: 1.1rem;
        }

        .step-card p {
            font-size: 0.85rem;
            color: #64748b;
        }

        /* 8. 技术标准 */
        .tech-standards-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .tech-card {
            padding: 25px;
            text-align: center;
        }

        .tech-badge {
            background: var(--primary);
            color: #fff;
            padding: 4px 10px;
            font-size: 0.8rem;
            font-weight: 700;
            border: 1.5px solid var(--dark);
            display: inline-block;
            margin-bottom: 15px;
        }

        /* 9. 客户案例中心 */
        .case-gallery {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .case-img-container {
            border-bottom: 3px solid var(--dark);
            overflow: hidden;
            background: var(--light-gray);
            aspect-ratio: 16/10;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

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

        .case-info {
            padding: 20px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .case-meta {
            font-weight: 800;
            color: var(--secondary);
            font-size: 0.85rem;
            margin-bottom: 10px;
        }

        .case-title {
            font-size: 1.15rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .case-desc {
            font-size: 0.9rem;
            color: #475569;
            margin-bottom: 15px;
        }

        /* 10. 对比评测 */
        .comparison-area {
            background: #fff;
            border: var(--border-width) solid var(--dark);
            box-shadow: var(--shadow-offset) var(--shadow-offset) 0px var(--dark);
            padding: 40px;
        }

        .score-card {
            display: flex;
            align-items: center;
            justify-content: space-around;
            background: var(--accent);
            border: 3px solid var(--dark);
            padding: 25px;
            margin-bottom: 40px;
            box-shadow: 4px 4px 0px var(--dark);
            flex-wrap: wrap;
            gap: 20px;
        }

        .score-num-box {
            text-align: center;
        }

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

        .score-lbl {
            font-weight: 800;
            font-size: 1rem;
            margin-top: 5px;
        }

        .rating-stars {
            color: var(--secondary);
            font-size: 2rem;
            letter-spacing: 5px;
        }

        .score-badge {
            background: #fff;
            border: 2px solid var(--dark);
            padding: 10px 20px;
            font-weight: 900;
            font-size: 1.1rem;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 3px solid var(--dark);
        }

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

        .comparison-table th, .comparison-table td {
            padding: 16px 20px;
            border: 2px solid var(--dark);
            font-weight: 700;
        }

        .comparison-table th {
            background: var(--light-gray);
            font-weight: 800;
        }

        .comparison-table td span.check-ok {
            color: green;
            font-size: 1.25rem;
        }

        .comparison-table td span.check-no {
            color: red;
            font-size: 1.25rem;
        }

        .comparison-table tr.highlight-row {
            background: rgba(26, 82, 255, 0.05);
        }

        /* 11. 智能需求匹配与表单 */
        .demand-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
        }

        .demand-intro h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .demand-form-card {
            padding: 35px;
        }

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

        .form-group label {
            display: block;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 2.5px solid var(--dark);
            font-size: 1rem;
            font-weight: 600;
            outline: none;
            background: var(--light-gray);
        }

        .form-control:focus {
            background: #fff;
            border-color: var(--primary);
            box-shadow: 3px 3px 0px var(--dark);
        }

        /* 12. Token比价参考 */
        .token-pricing-box {
            margin-top: 30px;
        }

        /* 13. 职业技术培训 & 14. 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .training-card {
            padding: 30px;
            background: #fff;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .training-body h3 {
            font-size: 1.25rem;
            font-weight: 800;
            margin-bottom: 12px;
            border-bottom: 2px dashed var(--mid-gray);
            padding-bottom: 12px;
        }

        .training-body p {
            font-size: 0.9rem;
            color: #475569;
            margin-bottom: 15px;
        }

        .training-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 20px;
        }

        .training-tag {
            padding: 2px 8px;
            background: var(--light-gray);
            border: 1px solid var(--dark);
            font-size: 0.75rem;
            font-weight: 700;
        }

        /* 15. 帮助中心 */
        .help-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .help-action-card {
            padding: 25px;
            text-align: center;
        }

        .help-action-card h4 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            font-weight: 800;
        }

        /* 16. 常见用户问题 FAQ */
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            margin-bottom: 15px;
        }

        .faq-summary {
            padding: 18px 24px;
            font-weight: 800;
            background: #fff;
            border: 2.5px solid var(--dark);
            box-shadow: 3px 3px 0px var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            transition: all 0.15s ease;
        }

        .faq-summary:hover {
            background: var(--accent);
            transform: translate(-1px, -1px);
            box-shadow: 4px 4px 0px var(--dark);
        }

        .faq-summary::after {
            content: "+";
            font-size: 1.5rem;
            font-weight: 900;
        }

        .faq-item[open] .faq-summary::after {
            content: "−";
        }

        .faq-details {
            padding: 20px 24px;
            background: #fff;
            border: 2.5px solid var(--dark);
            border-top: none;
            box-shadow: 3px 3px 0px var(--dark);
            margin-top: -2.5px;
        }

        /* 17. 常见问题自助排查 */
        .troubleshooting-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .trouble-card {
            padding: 25px;
        }

        .trouble-card h4 {
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--secondary);
        }

        .trouble-steps {
            list-style-type: decimal;
            padding-left: 20px;
            font-size: 0.9rem;
            color: #475569;
        }

        .trouble-steps li {
            margin-bottom: 8px;
        }

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

        .glossary-card {
            padding: 20px;
        }

        .glossary-card h4 {
            font-weight: 800;
            margin-bottom: 8px;
            color: var(--primary);
        }

        .glossary-card p {
            font-size: 0.85rem;
            color: #64748b;
        }

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

        .news-list-block {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .news-link-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
            background: #fff;
            border: 2px solid var(--dark);
            box-shadow: 3px 3px 0px var(--dark);
            text-decoration: none;
            color: var(--dark);
            font-weight: 700;
            transition: all 0.15s ease;
        }

        .news-link-item:hover {
            background: var(--accent);
            transform: translate(-1px, -1px);
            box-shadow: 4px 4px 0px var(--dark);
        }

        .news-link-title {
            font-size: 0.95rem;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 80%;
        }

        .news-link-date {
            font-size: 0.8rem;
            color: #64748b;
        }

        /* 20. 联系我们 & 21. 加盟代理 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
        }

        .contact-info-panel h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .contact-info-list {
            margin-bottom: 30px;
        }

        .contact-info-item {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 15px;
            font-weight: 700;
        }

        .contact-info-icon {
            width: 36px;
            height: 36px;
            background: var(--accent);
            border: 2px solid var(--dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
        }

        .agent-recruit-card {
            background: var(--accent);
            border: var(--border-width) solid var(--dark);
            box-shadow: 6px 6px 0px var(--dark);
            padding: 30px;
        }

        .agent-recruit-card h4 {
            font-size: 1.3rem;
            font-weight: 800;
            margin-bottom: 15px;
        }

        .agent-benefits {
            list-style: none;
            margin-bottom: 20px;
        }

        .agent-benefits li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 10px;
            font-weight: 700;
        }

        .agent-benefits li::before {
            content: "★";
            position: absolute;
            left: 0;
            color: var(--secondary);
        }

        .qr-codes-container {
            display: flex;
            gap: 30px;
            margin-top: 30px;
            flex-wrap: wrap;
        }

        .qr-item {
            text-align: center;
            width: 150px;
        }

        .qr-item img {
            width: 100%;
            border: 2.5px solid var(--dark);
            box-shadow: 3px 3px 0px var(--dark);
            margin-bottom: 10px;
            aspect-ratio: 1;
        }

        .qr-item p {
            font-size: 0.85rem;
            font-weight: 800;
        }

        /* 客户评论卡片 (6条评论) */
        .reviews-slider {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .review-card {
            padding: 25px;
            background: #fff;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .review-text {
            font-size: 0.95rem;
            color: #334155;
            font-style: italic;
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .review-user-info {
            display: flex;
            align-items: center;
            gap: 15px;
            border-top: 2px dashed var(--mid-gray);
            padding-top: 15px;
        }

        .user-avatar-placeholder {
            width: 45px;
            height: 45px;
            background: var(--accent);
            border: 2px solid var(--dark);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 950;
            font-size: 1.2rem;
        }

        .user-meta-details h4 {
            font-size: 0.95rem;
            font-weight: 800;
        }

        .user-meta-details p {
            font-size: 0.75rem;
            color: #64748b;
        }

        /* 浮动客服入口 */
        .float-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 99;
            background: var(--accent);
            border: 3px solid var(--dark);
            box-shadow: 4px 4px 0px var(--dark);
            padding: 15px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: all 0.15s ease;
        }

        .float-kefu:hover {
            transform: translateY(-3px);
            box-shadow: 6px 6px 0px var(--dark);
        }

        .float-kefu-icon {
            font-size: 1.5rem;
        }

        .float-kefu-text {
            font-weight: 800;
            font-size: 0.9rem;
        }

        .kefu-modal {
            display: none;
            position: fixed;
            bottom: 95px;
            right: 30px;
            z-index: 100;
            width: 260px;
            background: #fff;
            border: 3px solid var(--dark);
            box-shadow: 6px 6px 0px var(--dark);
            padding: 20px;
            text-align: center;
        }

        .kefu-modal.active {
            display: block;
        }

        .kefu-modal img {
            width: 100%;
            max-width: 180px;
            border: 2px solid var(--dark);
            margin: 10px 0;
        }

        /* 友情链接与页脚 */
        footer {
            background: var(--dark);
            color: #cbd5e1;
            padding: 60px 0 30px 0;
            border-top: var(--border-width) solid var(--dark);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            color: #fff;
            font-size: 1.6rem;
            font-weight: 900;
            margin-bottom: 15px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            color: #94a3b8;
            margin-bottom: 15px;
        }

        .footer-links-col h4 {
            color: #fff;
            font-size: 1.1rem;
            font-weight: 800;
            margin-bottom: 15px;
            border-bottom: 2px solid var(--primary);
            display: inline-block;
            padding-bottom: 5px;
        }

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

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

        .footer-links-col ul li a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.15s ease;
        }

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

        .friend-links-box {
            border-top: 1px solid #334155;
            padding-top: 25px;
            margin-top: 20px;
        }

        .friend-links-box h5 {
            color: #fff;
            font-size: 0.9rem;
            margin-bottom: 10px;
        }

        .friend-links-container {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .friend-links-container a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.85rem;
        }

        .friend-links-container a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #64748b;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid, .training-grid, .reviews-slider, .case-gallery {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-container {
                grid-template-columns: repeat(3, 1fr);
            }
            .tech-standards-grid, .glossary-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 80px;
                left: 0;
                width: 100%;
                background: #fff;
                border-bottom: var(--border-width) solid var(--dark);
                padding: 20px;
                box-shadow: 0 4px 6px rgba(0,0,0,0.1);
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            h1.hero-title {
                font-size: 2.2rem;
            }
            .about-grid, .solution-content, .network-grid, .demand-grid, .contact-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .services-grid, .training-grid, .reviews-slider, .case-gallery, .steps-container, .tech-standards-grid, .glossary-grid, .troubleshooting-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
        }