:root {
            --primary: #8b5cf6;
            --primary-light: #a855f7;
            --primary-dark: #6d28d9;
            --accent: #d946ef;
            --text-main: #0f172a;
            --text-muted: #475569;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --container-max: 1200px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-main);
            background-color: var(--bg-light);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 布局容器 */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
            background-color: var(--bg-white);
        }

        section:nth-child(even) {
            background-color: var(--bg-light);
        }

        /* 标题规范 */
        .section-title {
            text-align: center;
            font-size: 2rem;
            margin-bottom: 16px;
            color: var(--text-main);
            position: relative;
            font-weight: 700;
        }

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

        .section-subtitle {
            text-align: center;
            font-size: 1.1rem;
            color: var(--text-muted);
            margin-bottom: 48px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }

        .nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
            color: var(--text-main);
            font-weight: 700;
            font-size: 1.3rem;
        }

        .brand-logo img {
            height: 40px;
            width: auto;
        }

        .nav-menu {
            display: flex;
            gap: 20px;
            list-style: none;
            align-items: center;
        }

        .nav-menu a {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: white !important;
            padding: 8px 18px;
            border-radius: 9999px;
            font-weight: 600 !important;
            transition: var(--transition);
        }

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

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }

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

        /* Hero首屏 - 严禁图片 */
        .hero {
            background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #311042 100%);
            color: white;
            padding: 100px 0 120px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 20%;
            left: 10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(139, 92, 246, 0.3) 0%, transparent 70%);
            filter: blur(40px);
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 10%;
            right: 10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(217, 70, 239, 0.2) 0%, transparent 70%);
            filter: blur(50px);
        }

        .hero-h1 {
            font-size: 2.6rem;
            line-height: 1.3;
            margin-bottom: 24px;
            font-weight: 800;
            letter-spacing: -0.02em;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: #cbd5e1;
            max-width: 800px;
            margin: 0 auto 40px auto;
        }

        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: white;
            padding: 14px 28px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(139, 92, 246, 0.4);
            transition: var(--transition);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(139, 92, 246, 0.6);
        }

        .btn-secondary {
            background-color: rgba(255, 255, 255, 0.1);
            color: white;
            padding: 14px 28px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.2);
        }

        /* 平台软件介绍 */
        .platform-intro {
            padding: 80px 0;
        }

        .grid-intro {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .intro-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--text-main);
        }

        .intro-text p {
            color: var(--text-muted);
            margin-bottom: 24px;
            font-size: 1.05rem;
            line-height: 1.8;
        }

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

        .intro-features li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            font-weight: 500;
            color: var(--text-main);
        }

        .intro-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: 900;
        }

        .intro-image-container {
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.05) 0%, rgba(217, 70, 239, 0.05) 100%);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 24px;
            text-align: center;
        }

        .intro-image-container img {
            border-radius: 12px;
            box-shadow: 0 10px 25px -5px rgba(0,0,0,0.1);
        }

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

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

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 16px;
            line-height: 1.8;
        }

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

        .stat-card {
            background-color: var(--bg-light);
            padding: 20px;
            border-radius: 12px;
            border-left: 4px solid var(--primary);
        }

        .stat-card h4 {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .stat-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* 3. AIGC服务体系 & 支持平台 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-bottom: 48px;
        }

        .service-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 32px;
            border-radius: 12px;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 20px -10px rgba(139, 92, 246, 0.2);
            border-color: var(--primary-light);
        }

        .service-icon {
            width: 48px;
            height: 48px;
            background-color: rgba(139, 92, 246, 0.1);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .platform-tag-cloud {
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.02) 0%, rgba(217, 70, 239, 0.02) 100%);
            border: 1px solid var(--border-color);
            padding: 32px;
            border-radius: 16px;
            text-align: center;
        }

        .platform-tag-cloud h4 {
            margin-bottom: 20px;
            font-size: 1.1rem;
            color: var(--text-muted);
        }

        .tag-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .tag {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 9999px;
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
            transition: var(--transition);
        }

        .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: scale(1.05);
        }

        /* 4. 全自动AIGC制作流程 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            width: 2px;
            height: 100%;
            background-color: var(--border-color);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 40px;
            width: 50%;
            padding: 0 30px;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-badge {
            position: absolute;
            top: 4px;
            width: 16px;
            height: 16px;
            background-color: var(--primary);
            border: 4px solid var(--bg-white);
            border-radius: 50%;
            z-index: 2;
        }

        .timeline-item:nth-child(odd) .timeline-badge {
            right: -8px;
        }

        .timeline-item:nth-child(even) .timeline-badge {
            left: -8px;
        }

        .timeline-content {
            background-color: var(--bg-white);
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
        }

        .timeline-content h3 {
            font-size: 1.15rem;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .timeline-content p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* 5. 全行业解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .solution-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .solution-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 20px -5px rgba(0,0,0,0.1);
        }

        .solution-header {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            color: white;
            padding: 24px;
        }

        .solution-header h3 {
            font-size: 1.3rem;
            margin-bottom: 6px;
        }

        .solution-header p {
            font-size: 0.85rem;
            opacity: 0.9;
        }

        .solution-body {
            padding: 24px;
            flex-grow: 1;
        }

        .solution-body ul {
            list-style: none;
        }

        .solution-body li {
            margin-bottom: 12px;
            padding-left: 20px;
            position: relative;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

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

        /* 6. 全国服务网络 */
        .network-section {
            background: linear-gradient(to right, #ffffff, #fdfaff);
        }

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

        .map-mock {
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            background-color: var(--bg-white);
            position: relative;
            min-height: 300px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .map-node {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .node-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background-color: var(--accent);
            box-shadow: 0 0 8px var(--accent);
        }

        .node-info h4 {
            font-size: 0.95rem;
            color: var(--text-main);
        }

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

        /* 7. 标准化服务流程 & 8. 技术标准 */
        .standard-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .standard-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 8px;
            text-align: center;
        }

        .standard-num {
            font-size: 2rem;
            font-weight: 800;
            color: rgba(139, 92, 246, 0.15);
            line-height: 1;
            margin-bottom: 12px;
        }

        .standard-card h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

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

        /* 9. 客户案例中心 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .case-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px -10px rgba(0,0,0,0.1);
        }

        .case-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background-color: var(--bg-light);
        }

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

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

        .case-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background-color: var(--primary);
            color: white;
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: 600;
        }

        .case-info {
            padding: 24px;
        }

        .case-info h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--text-main);
        }

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

        /* 10. 对比评测 */
        .comparison-table-container {
            width: 100%;
            overflow-x: auto;
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
        }

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

        .comparison-table th, 
        .comparison-table td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 0.95rem;
        }

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

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

        .highlight-col {
            background-color: rgba(139, 92, 246, 0.03);
            font-weight: 600;
            color: var(--primary-dark);
        }

        .rating-badge {
            display: inline-flex;
            align-items: center;
            background-color: rgba(217, 70, 239, 0.1);
            color: var(--accent);
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 700;
            font-size: 0.8rem;
        }

        /* 11. 智能需求匹配 */
        .matching-box {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 4px 20px -2px rgba(0,0,0,0.05);
        }

        .matching-form {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
            margin-bottom: 24px;
        }

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

        .form-group label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-main);
        }

        .form-group select, 
        .form-group input {
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            outline: none;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .form-group select:focus, 
        .form-group input:focus {
            border-color: var(--primary);
        }

        .matching-result {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 8px;
            text-align: center;
            display: none;
        }

        .matching-result h4 {
            color: var(--primary);
            margin-bottom: 8px;
        }

        .btn-calc {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 14px 28px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            width: 100%;
        }

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

        /* 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(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            position: relative;
        }

        .token-card.best-deal {
            border-color: var(--accent);
            box-shadow: 0 4px 15px rgba(217, 70, 239, 0.1);
        }

        .token-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background-color: var(--accent);
            color: white;
            font-size: 0.7rem;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: bold;
        }

        .token-card h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

        .token-price {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .token-price span {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 400;
        }

        .token-features {
            list-style: none;
            margin-top: 16px;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
        }

        .token-features li {
            font-size: 0.85rem;
            color: var(--text-muted);
            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(300px, 1fr));
            gap: 24px;
        }

        .training-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 32px;
            transition: var(--transition);
        }

        .training-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
        }

        .training-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: var(--primary-dark);
        }

        .training-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .training-tag {
            display: inline-block;
            background-color: var(--bg-light);
            color: var(--text-muted);
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 4px;
            margin-right: 8px;
            font-weight: 600;
        }

        /* 15. 帮助中心 & 16. FAQ & 17. 自助排查 */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-header {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background-color: var(--bg-white);
            transition: var(--transition);
        }

        .faq-header:hover {
            background-color: var(--bg-light);
        }

        .faq-header h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            margin: 0;
        }

        .faq-icon {
            font-size: 1.2rem;
            transition: var(--transition);
            color: var(--primary);
        }

        .faq-content {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            border-top: 0 solid var(--border-color);
            color: var(--text-muted);
            font-size: 0.9rem;
            background-color: var(--bg-white);
        }

        .faq-item.active .faq-content {
            padding: 20px 24px;
            max-height: 300px;
            border-top: 1px solid var(--border-color);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        /* 18. 术语百科 */
        .term-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .term-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 20px;
        }

        .term-card h3 {
            font-size: 1.05rem;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .term-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* 6条用户评论 */
        .reviews-section {
            padding: 80px 0;
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .review-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 32px;
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

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

        .user-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background-color: rgba(139, 92, 246, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
        }

        .user-info h4 {
            font-size: 0.95rem;
            color: var(--text-main);
        }

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

        /* 19. 行业资讯 / 知识库 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .article-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
        }

        .article-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary-light);
        }

        .article-card h3 {
            font-size: 1.1rem;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .article-card a {
            text-decoration: none;
            color: var(--text-main);
            transition: var(--transition);
        }

        .article-card a:hover {
            color: var(--primary);
        }

        .article-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 16px;
        }

        /* 20. 联系我们 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
        }

        .contact-form-box {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
        }

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

        .contact-form-box .full-width {
            grid-column: span 2;
        }

        .contact-info-box {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .info-item h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .info-item p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .qr-code-container {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 16px;
        }

        .qr-code-container img {
            width: 100px;
            height: 100px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        /* 浮动客服 & 返回顶部 */
        .float-tools {
            position: fixed;
            bottom: 40px;
            right: 30px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            text-decoration: none;
            color: var(--text-main);
            transition: var(--transition);
        }

        .float-btn:hover {
            background-color: var(--primary);
            color: white;
            transform: scale(1.05);
        }

        .float-btn svg {
            width: 24px;
            height: 24px;
        }

        /* 页脚与友情链接 */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            border-top: 1px solid #1e293b;
        }

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

        .footer-logo img {
            height: 48px;
            margin-bottom: 16px;
        }

        .footer-links h4 {
            color: white;
            margin-bottom: 16px;
            font-size: 1rem;
        }

        .footer-links ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: white;
        }

        .friend-links {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            margin-top: 24px;
            font-size: 0.85rem;
        }

        .friend-links a {
            color: #64748b;
            text-decoration: none;
            margin-right: 16px;
            transition: var(--transition);
        }

        .friend-links a:hover {
            color: white;
        }

        .copyright {
            border-top: 1px solid #1e293b;
            padding-top: 24px;
            margin-top: 24px;
            text-align: center;
            font-size: 0.8rem;
        }

        /* 响应式适配 */
        @media (max-width: 992px) {
            .grid-intro, 
            .about-grid, 
            .network-grid, 
            .contact-layout {
                grid-template-columns: 1fr;
            }
            .hero-h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background-color: var(--bg-white);
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 45px;
                padding-right: 0;
                text-align: left !important;
            }
            .timeline-item:nth-child(even) {
                left: 0;
            }
            .timeline-badge {
                left: 12px !important;
            }
            .contact-form-box form {
                grid-template-columns: 1fr;
            }
            .contact-form-box .full-width {
                grid-column: span 1;
            }
        }