:root {
            --primary: #4f46e5;
            --primary-light: #6366f1;
            --secondary: #ec4899;
            --accent: #06b6d4;
            --dark: #0f172a;
            --light: #f8fafc;
            --text-main: #334155;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --white: #ffffff;
            --grad-primary: linear-gradient(135deg, #4f46e5 0%, #ec4899 100%);
            --grad-soft: linear-gradient(135deg, #eff6ff 0%, #fdf2f8 100%);
            --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
        }

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

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: all 0.3s ease;
        }

        a:hover {
            color: var(--secondary);
        }

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

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

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

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

        .logo-area span {
            font-size: 1.25rem;
            font-weight: 800;
            background: var(--grad-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        nav {
            display: flex;
            align-items: center;
            gap: 20px;
        }

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

        .nav-menu a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--dark);
        }

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

        .nav-btn {
            background: var(--grad-primary);
            color: var(--white) !important;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
        }

        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(79, 70, 229, 0.4);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
        }

        /* Hero 首屏 - 无图片设计，活力亮彩渐变背景 */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
                        var(--white);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: var(--grad-primary);
            filter: blur(120px);
            opacity: 0.15;
            top: -50px;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 50%;
            z-index: 1;
        }

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

        .hero-badge {
            display: inline-block;
            background: rgba(79, 70, 229, 0.08);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(79, 70, 229, 0.15);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.03); }
            100% { transform: scale(1); }
        }

        .hero-title {
            font-size: 3rem;
            line-height: 1.25;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 24px;
        }

        .hero-title span {
            background: var(--grad-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 750px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .btn-main {
            background: var(--grad-primary);
            color: var(--white);
            padding: 16px 36px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            box-shadow: 0 8px 20px rgba(79, 70, 229, 0.3);
            border: none;
            transition: all 0.3s ease;
        }

        .btn-main:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 25px rgba(79, 70, 229, 0.4);
            color: var(--white);
        }

        .btn-sub {
            background: var(--white);
            color: var(--dark);
            padding: 16px 36px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
            z-index: 2;
            position: relative;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.8);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow-md);
            transition: all 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }

        .stat-val {
            font-size: 2.25rem;
            font-weight: 800;
            background: var(--grad-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 通用区块样式 */
        section {
            padding: 90px 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 60px;
        }

        .section-tag {
            color: var(--primary);
            font-weight: 700;
            font-size: 0.875rem;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 12px;
            display: block;
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .section-desc {
            font-size: 1.1rem;
            color: var(--text-muted);
        }

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

        .bg-gradient-soft {
            background: var(--grad-soft);
        }

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

        .about-text h3 {
            font-size: 1.75rem;
            margin-bottom: 20px;
            color: var(--dark);
        }

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

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

        .about-feat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
            color: var(--dark);
        }

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

        .about-visual {
            background: var(--grad-primary);
            border-radius: 24px;
            padding: 40px;
            color: var(--white);
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }

        .about-visual::after {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            bottom: -50px;
            right: -50px;
        }

        .about-visual h4 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            font-weight: 700;
        }

        .about-visual p {
            opacity: 0.9;
            margin-bottom: 20px;
            font-size: 0.95rem;
        }

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

        .service-card {
            background: var(--white);
            border-radius: 16px;
            padding: 35px;
            box-shadow: var(--shadow-md);
            transition: all 0.3s ease;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--grad-primary);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            width: 60px;
            height: 60px;
            border-radius: 12px;
            background: rgba(79, 70, 229, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            margin-bottom: 24px;
        }

        .service-card h3 {
            font-size: 1.35rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 20px;
        }

        /* 平台支持标签 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 15px;
        }

        .tag-item {
            background: var(--light);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.8rem;
            color: var(--text-main);
            font-weight: 500;
        }

        /* AIGC流程步骤 */
        .flow-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
        }

        .flow-card {
            background: var(--white);
            padding: 30px;
            border-radius: 16px;
            box-shadow: var(--shadow-sm);
            text-align: center;
            position: relative;
            z-index: 2;
            border: 1px solid var(--border-color);
        }

        .flow-num {
            width: 40px;
            height: 40px;
            background: var(--grad-primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .flow-card h3 {
            font-size: 1.15rem;
            margin-bottom: 12px;
            color: var(--dark);
        }

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

        /* 全行业解决方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .solution-item {
            background: var(--white);
            border-radius: 16px;
            padding: 35px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            display: flex;
            gap: 20px;
        }

        .solution-icon {
            width: 50px;
            height: 50px;
            background: rgba(236, 72, 153, 0.1);
            color: var(--secondary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

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

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

        /* 全国服务网络 + 步骤时间线 */
        .network-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .map-mock {
            background: radial-gradient(circle, var(--white) 0%, #f1f5f9 100%);
            border-radius: 20px;
            padding: 40px;
            border: 1px solid var(--border-color);
            min-height: 350px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
        }

        .map-dot {
            position: absolute;
            width: 12px;
            height: 12px;
            background-color: var(--primary);
            border-radius: 50%;
        }

        .map-dot::after {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background: inherit;
            animation: ripple 1.5s infinite;
        }

        @keyframes ripple {
            0% { transform: scale(1); opacity: 1; }
            100% { transform: scale(3); opacity: 0; }
        }

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

        .network-item {
            margin-bottom: 20px;
            padding-left: 20px;
            border-left: 3px solid var(--primary-light);
        }

        .network-item h4 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 5px;
        }

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

        /* 标准化服务流程 & 技术标准 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

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

        .timeline-item {
            margin-bottom: 40px;
            position: relative;
            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-item::after {
            content: '';
            position: absolute;
            width: 16px;
            height: 16px;
            background-color: var(--white);
            border: 4px solid var(--primary);
            border-radius: 50%;
            top: 5px;
            z-index: 2;
        }

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

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

        .timeline-content {
            background: var(--white);
            padding: 24px;
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .timeline-content h4 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--dark);
        }

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

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

        .case-card {
            background: var(--white);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            transition: transform 0.3s ease;
        }

        .case-card:hover {
            transform: translateY(-5px);
        }

        .case-img-wrap {
            position: relative;
            background: #e2e8f0;
            aspect-ratio: 16/9;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .case-info {
            padding: 24px;
        }

        .case-tag {
            background: rgba(6, 182, 212, 0.1);
            color: var(--accent);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 12px;
        }

        .case-info h4 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

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

        /* 对比评测 */
        .comparison-area {
            background: var(--white);
            border-radius: 20px;
            padding: 40px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
        }

        .comparison-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 30px;
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .rating-box {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .rating-num {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }

        .rating-stars {
            display: flex;
            flex-direction: column;
        }

        .stars {
            color: #fbbf24;
            font-size: 1.5rem;
        }

        .rating-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .comparison-table-wrapper {
            width: 100%;
            overflow-x: auto;
        }

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

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

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

        .comparison-table tr:hover {
            background: rgba(79, 70, 229, 0.02);
        }

        .comp-highlight {
            color: var(--primary);
            font-weight: 700;
        }

        /* Token比价参考 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .price-card {
            background: var(--white);
            border-radius: 16px;
            padding: 35px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            text-align: center;
            position: relative;
        }

        .price-card.featured {
            border-color: var(--primary-light);
            transform: scale(1.03);
            box-shadow: var(--shadow-lg);
        }

        .price-card.featured::after {
            content: '推荐';
            position: absolute;
            top: 15px;
            right: 15px;
            background: var(--grad-primary);
            color: var(--white);
            padding: 3px 10px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 700;
        }

        .price-header h3 {
            font-size: 1.5rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .price-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin: 20px 0;
        }

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

        .price-features {
            list-style: none;
            margin-bottom: 30px;
        }

        .price-features li {
            padding: 10px 0;
            border-bottom: 1px solid var(--light);
            font-size: 0.95rem;
            color: var(--text-main);
        }

        /* 培训中心 */
        .train-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .train-card {
            background: var(--white);
            border-radius: 16px;
            padding: 40px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

        .train-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--dark);
            border-left: 4px solid var(--secondary);
            padding-left: 12px;
        }

        .train-card p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

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

        .train-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 0;
            border-bottom: 1px solid var(--light);
            font-weight: 600;
            color: var(--dark);
        }

        .train-list li svg {
            color: #10b981;
        }

        /* FAQ折叠面板 */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 15px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 700;
            color: var(--dark);
            transition: background 0.3s ease;
        }

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

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            color: var(--text-muted);
            border-top: 0 solid var(--border-color);
            font-size: 0.95rem;
        }

        .faq-item.active .faq-answer {
            padding: 20px 24px;
            max-height: 200px;
            border-top-width: 1px;
        }

        .faq-icon {
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180px);
        }

        /* 术语百科与自助排查 */
        .troubleshoot-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .encyclopedia, .self-check {
            background: var(--white);
            border-radius: 16px;
            padding: 35px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

        .troubleshoot-layout h3 {
            font-size: 1.4rem;
            margin-bottom: 24px;
            color: var(--dark);
        }

        .term-list, .check-list {
            list-style: none;
        }

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

        .term-title {
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }

        .term-desc {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .check-item {
            display: flex;
            gap: 12px;
            margin-bottom: 15px;
            align-items: flex-start;
        }

        .check-icon {
            width: 20px;
            height: 20px;
            background: #fee2e2;
            color: #ef4444;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            font-weight: bold;
            flex-shrink: 0;
            margin-top: 3px;
        }

        .check-content h4 {
            font-size: 0.95rem;
            color: var(--dark);
            margin-bottom: 2px;
        }

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

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

        .comment-card {
            background: var(--white);
            border-radius: 16px;
            padding: 30px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            position: relative;
        }

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

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

        .user-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background: var(--grad-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white);
            font-weight: 700;
        }

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

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

        /* 行业资讯 & 知识库 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

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

        .article-card h4 {
            font-size: 1.15rem;
            color: var(--dark);
            margin-bottom: 12px;
        }

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

        .article-link {
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        /* 表单与需求匹配 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .form-card {
            background: var(--white);
            border-radius: 20px;
            padding: 40px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
        }

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

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

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

        .form-label {
            display: block;
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            background-color: var(--light);
            color: var(--dark);
            font-size: 0.95rem;
            transition: all 0.3s ease;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            background-color: var(--white);
            box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
        }

        textarea.form-input {
            resize: vertical;
            min-height: 120px;
        }

        .btn-submit {
            width: 100%;
            background: var(--grad-primary);
            color: var(--white);
            padding: 15px;
            border-radius: 8px;
            font-size: 1.05rem;
            font-weight: 700;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
            transition: all 0.3s ease;
        }

        .btn-submit:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(79, 70, 229, 0.3);
        }

        .info-card {
            background: var(--white);
            border-radius: 20px;
            padding: 40px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

        .contact-item {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 24px;
        }

        .contact-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(79, 70, 229, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .contact-details h5 {
            font-size: 0.95rem;
            color: var(--dark);
            margin-bottom: 2px;
        }

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

        .qrcode-area {
            text-align: center;
            padding: 20px;
            background: var(--light);
            border-radius: 12px;
            border: 1px dashed var(--border-color);
        }

        .qrcode-area img {
            width: 140px;
            height: 140px;
            margin-bottom: 10px;
        }

        .qrcode-area p {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--dark);
        }

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: #94a3b8;
            padding: 80px 0 30px;
            font-size: 0.9rem;
            border-top: 1px solid #1e293b;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-logo-area {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .footer-logo-area span {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--white);
        }

        .footer-logo-area p {
            font-size: 0.85rem;
            line-height: 1.6;
        }

        .footer-links h4 {
            color: var(--white);
            font-size: 1rem;
            margin-bottom: 20px;
            font-weight: 700;
        }

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

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: #94a3b8;
        }

        .footer-links a:hover {
            color: var(--white);
            padding-left: 4px;
        }

        .footer-contact h4 {
            color: var(--white);
            font-size: 1rem;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .footer-contact p {
            margin-bottom: 10px;
            font-size: 0.85rem;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 20px;
            border-top: 1px solid #1e293b;
            padding-top: 20px;
        }

        .friend-links a {
            font-size: 0.8rem;
            color: #64748b;
        }

        .friend-links a:hover {
            color: #94a3b8;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-top: 1px solid #1e293b;
            padding-top: 30px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-bottom p {
            font-size: 0.8rem;
        }

        /* 侧边悬浮客服 */
        .floating-service {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--white);
            box-shadow: var(--shadow-lg);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-main);
            cursor: pointer;
            transition: all 0.3s ease;
            border: 1px solid var(--border-color);
            position: relative;
        }

        .float-btn:hover {
            background: var(--grad-primary);
            color: var(--white);
            transform: translateY(-3px);
        }

        .float-btn svg {
            width: 22px;
            height: 22px;
        }

        .float-qrcode-pop {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: var(--white);
            padding: 15px;
            border-radius: 12px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-color);
            display: none;
            text-align: center;
        }

        .float-qrcode-pop img {
            width: 120px;
            height: 120px;
        }

        .float-qrcode-pop p {
            font-size: 0.75rem;
            color: var(--dark);
            margin-top: 5px;
            font-weight: bold;
        }

        .float-btn:hover .float-qrcode-pop {
            display: block;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .stats-grid, .service-grid, .case-grid, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow-md);
                border-top: 1px solid var(--border-color);
            }
            
            .nav-menu.active {
                display: flex;
            }

            .menu-toggle {
                display: block;
            }

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

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

            .about-layout, .network-layout, .solutions-grid, .troubleshoot-layout, .contact-layout {
                grid-template-columns: 1fr;
            }

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

            .timeline-item {
                width: 100%;
                padding-left: 45px;
                padding-right: 0;
                text-align: left !important;
            }

            .timeline-item::after {
                left: 12px !important;
                right: auto !important;
            }

            .timeline-item:nth-child(even) {
                left: 0;
            }

            .train-grid, .articles-grid {
                grid-template-columns: 1fr;
            }
            
            .form-grid {
                grid-template-columns: 1fr;
            }

            .form-group.full-width {
                grid-column: span 1;
            }
        }

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