:root {
            --primary: #0B3C9B;
            --primary-light: #1E5CD9;
            --accent: #00D2FF;
            --accent-warm: #FFB800;
            --text-main: #0F172A;
            --text-muted: #475569;
            --bg-light: #F8FAFC;
            --bg-white: #FFFFFF;
            --border-color: #E2E8F0;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
            --shadow-lg: 0 10px 15px -3px rgba(11, 60, 155, 0.1), 0 4px 6px -2px rgba(11, 60, 155, 0.05);
            --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, "Noto Sans CJK SC", sans-serif;
            color: var(--text-main);
            background-color: var(--bg-light);
            line-height: 1.6;
        }

        body {
            overflow-x: hidden;
        }

        /* 统一容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 头部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            transition: var(--transition);
        }

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

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

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

        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
        }

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

        .nav-menu a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            padding: 8px 12px;
            border-radius: 4px;
        }

        .nav-menu a:hover, .nav-menu a.active {
            color: var(--primary);
            background-color: rgba(11, 60, 155, 0.05);
        }

        .nav-btns {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            font-size: 0.95rem;
            font-weight: 600;
            border-radius: 6px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }

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

        .btn-primary:hover {
            background-color: var(--primary-light);
            box-shadow: 0 4px 12px rgba(11, 60, 155, 0.25);
        }

        .btn-outline {
            background-color: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
        }

        .btn-outline:hover {
            background-color: rgba(11, 60, 155, 0.05);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }

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

        /* 通用区块样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-dark {
            background-color: var(--primary);
            color: var(--bg-white);
            border-bottom: none;
        }

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

        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 50px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            color: var(--text-main);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
            padding-bottom: 10px;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        .section-dark .section-header h2 {
            color: var(--bg-white);
        }

        .section-dark .section-header h2::after {
            background-color: var(--accent);
        }

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

        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.8);
        }

        /* Hero 首屏 (无图片) */
        .hero {
            padding: 160px 0 100px;
            background: linear-gradient(135deg, #092e7a 0%, #0c43ad 50%, #06235e 100%);
            color: var(--bg-white);
            text-align: center;
            position: relative;
            overflow: hidden;
            border-bottom: none;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 80% 20%, rgba(0, 210, 255, 0.15) 0%, transparent 50%);
            pointer-events: none;
        }

        .hero-content {
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 10;
        }

        .hero h1 {
            font-size: 2.8rem;
            line-height: 1.25;
            margin-bottom: 24px;
            font-weight: 800;
            letter-spacing: 1px;
            color: #FFFFFF;
        }

        .hero p.lead {
            font-size: 1.25rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 40px;
            max-width: 750px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .hero-btns .btn {
            padding: 15px 32px;
            font-size: 1.1rem;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }

        .btn-accent {
            background-color: var(--accent-warm);
            color: #000;
        }

        .btn-accent:hover {
            background-color: #e5a500;
            transform: translateY(-2px);
        }

        /* 数据指标卡片 */
        .stats-section {
            background-color: var(--bg-white);
            padding: 40px 0;
            box-shadow: var(--shadow-md);
            position: relative;
            margin-top: -40px;
            z-index: 20;
            border-radius: 12px;
            border-bottom: none;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .stat-item h3 {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 5px;
            font-weight: 700;
        }

        .stat-item p {
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
        }

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

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

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

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

        .about-feat-item {
            background: var(--bg-light);
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid var(--primary);
        }

        .about-feat-item h4 {
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .about-feat-item p {
            font-size: 0.85rem;
            margin-bottom: 0;
        }

        /* AIGC 服务体系 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background-color: var(--bg-white);
            border-radius: 10px;
            padding: 35px 25px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

        .service-card .icon-box {
            width: 60px;
            height: 60px;
            background-color: rgba(11, 60, 155, 0.08);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--primary);
            font-size: 1.5rem;
        }

        .service-card h3 {
            margin-bottom: 12px;
            font-size: 1.3rem;
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 15px;
        }

        .service-card ul {
            list-style: none;
            padding: 0;
        }

        .service-card ul li {
            font-size: 0.85rem;
            color: var(--text-muted);
            padding-left: 15px;
            position: relative;
            margin-bottom: 6px;
        }

        .service-card ul li::before {
            content: '✓';
            color: var(--accent);
            position: absolute;
            left: 0;
        }

        /* 聚合平台滚动标签 */
        .platform-ticker {
            margin-top: 50px;
            overflow: hidden;
            background-color: var(--bg-light);
            padding: 20px 0;
            border-radius: 8px;
            border: 1px solid var(--border-color);
        }

        .platform-ticker-title {
            text-align: center;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 15px;
            font-weight: 600;
        }

        .ticker-wrap {
            display: flex;
            width: 100%;
        }

        .ticker-move {
            display: flex;
            white-space: nowrap;
            animation: ticker 40s linear infinite;
        }

        .ticker-item {
            display: inline-block;
            padding: 5px 18px;
            margin: 0 10px;
            background-color: var(--bg-white);
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid var(--border-color);
            color: var(--primary);
        }

        @keyframes ticker {
            0% { transform: translate3d(0, 0, 0); }
            100% { transform: translate3d(-50%, 0, 0); }
        }

        /* AIGC 制作流程 (时间线样式) */
        .timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
        }

        .timeline::after {
            content: '';
            position: absolute;
            width: 4px;
            background-color: var(--primary);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -2px;
        }

        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
            box-sizing: border-box;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            right: -10px;
            background-color: var(--bg-white);
            border: 4px solid var(--accent);
            top: 15px;
            border-radius: 50%;
            z-index: 1;
        }

        .left {
            left: 0;
            text-align: right;
        }

        .right {
            left: 50%;
        }

        .right::after {
            left: -10px;
        }

        .timeline-content {
            padding: 20px 30px;
            background-color: var(--bg-white);
            position: relative;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .timeline-content h3 {
            color: var(--primary);
            margin-bottom: 10px;
        }

        /* 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: 12px 24px;
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 30px;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-muted);
            transition: var(--transition);
        }

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

        .solution-content {
            background-color: var(--bg-white);
            border-radius: 12px;
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
            display: none;
        }

        .solution-content.active {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: center;
        }

        .sol-left h3 {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .sol-left p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }

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

        .sol-feat {
            padding: 15px;
            background-color: var(--bg-light);
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
        }

        .sol-right {
            background: linear-gradient(135deg, rgba(11, 60, 155, 0.05) 0%, rgba(0, 210, 255, 0.05) 100%);
            padding: 30px;
            border-radius: 8px;
            border: 1px dashed var(--primary-light);
        }

        .sol-right h4 {
            margin-bottom: 15px;
            color: var(--primary);
        }

        .sol-right ul {
            list-style: none;
        }

        .sol-right li {
            padding: 8px 0;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            font-size: 0.9rem;
            color: var(--text-muted);
        }

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

        .network-info h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .network-info p {
            color: var(--text-muted);
            margin-bottom: 30px;
        }

        .network-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .network-item {
            background-color: var(--bg-white);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .network-item h4 {
            color: var(--primary);
            margin-bottom: 5px;
        }

        .network-item p {
            font-size: 0.85rem;
            margin-bottom: 0;
        }

        .network-map-placeholder {
            background-color: var(--bg-light);
            border-radius: 12px;
            height: 350px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            border: 2px dashed var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .map-dot {
            width: 12px;
            height: 12px;
            background-color: var(--accent);
            border-radius: 50%;
            position: absolute;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(0.8); opacity: 0.5; box-shadow: 0 0 0 0 rgba(0, 210, 255, 0.7); }
            70% { transform: scale(1.2); opacity: 1; box-shadow: 0 0 0 10px rgba(0, 210, 255, 0); }
            100% { transform: scale(0.8); opacity: 0.5; box-shadow: 0 0 0 0 rgba(0, 210, 255, 0); }
        }

        /* 标准化服务全流程 */
        .step-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .step-card {
            background-color: var(--bg-white);
            border-radius: 8px;
            padding: 30px 20px;
            border: 1px solid var(--border-color);
            position: relative;
            text-align: center;
        }

        .step-num {
            position: absolute;
            top: 15px;
            left: 15px;
            font-size: 2.5rem;
            font-weight: 800;
            color: rgba(11, 60, 155, 0.08);
            line-height: 1;
        }

        .step-card h3 {
            font-size: 1.15rem;
            margin-bottom: 12px;
            color: var(--primary);
            position: relative;
            z-index: 2;
        }

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

        /* 技术标准 */
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
        }

        .tech-box {
            background-color: var(--bg-light);
            border-radius: 8px;
            padding: 30px;
            border-top: 4px solid var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .tech-box h3 {
            font-size: 1.25rem;
            margin-bottom: 15px;
            color: var(--text-main);
        }

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

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

        .case-card {
            background-color: var(--bg-white);
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .case-img-container {
            width: 100%;
            height: 220px;
            overflow: hidden;
            background-color: var(--bg-light);
        }

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

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

        .case-info {
            padding: 20px;
        }

        .case-info span {
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 600;
            text-transform: uppercase;
        }

        .case-info h3 {
            font-size: 1.2rem;
            margin: 8px 0;
        }

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

        /* 对比评测 */
        .compare-table-container {
            overflow-x: auto;
            background-color: var(--bg-white);
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }

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

        .compare-table th, .compare-table td {
            padding: 18px 24px;
            border-bottom: 1px solid var(--border-color);
        }

        .compare-table th {
            background-color: rgba(11, 60, 155, 0.03);
            color: var(--text-main);
            font-weight: 700;
        }

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

        .compare-table td.highlight {
            background-color: rgba(11, 60, 155, 0.02);
            font-weight: 600;
            color: var(--primary);
        }

        .badge-good {
            background-color: rgba(16, 185, 129, 0.1);
            color: #10b981;
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        .badge-bad {
            background-color: rgba(239, 68, 68, 0.1);
            color: #ef4444;
            padding: 4px 8px;
            border-radius: 4px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        .rating-box {
            display: flex;
            align-items: center;
            gap: 15px;
            background-color: rgba(255, 184, 0, 0.1);
            border: 1px solid var(--accent-warm);
            padding: 20px;
            border-radius: 8px;
            margin-top: 30px;
        }

        .rating-score {
            font-size: 2.2rem;
            font-weight: 800;
            color: #d97706;
            line-height: 1;
        }

        .rating-stars {
            color: var(--accent-warm);
            font-size: 1.5rem;
        }

        .rating-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
        }

        /* Token 比价 */
        .token-info {
            text-align: center;
            margin-bottom: 30px;
            color: var(--text-muted);
        }

        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .token-card {
            background-color: var(--bg-white);
            border-radius: 8px;
            padding: 25px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            text-align: center;
        }

        .token-card h3 {
            font-size: 1.25rem;
            margin-bottom: 15px;
            color: var(--text-main);
        }

        .token-price {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

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

        .token-card ul {
            list-style: none;
            margin: 15px 0 0;
            padding: 15px 0 0;
            border-top: 1px solid var(--border-color);
            text-align: left;
        }

        .token-card ul li {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            justify-content: space-between;
        }

        /* 培训中心 */
        .train-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .train-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .train-item {
            background-color: var(--bg-white);
            border-radius: 8px;
            padding: 20px;
            border-left: 5px solid var(--primary);
            box-shadow: var(--shadow-sm);
        }

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

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

        .train-cert {
            background-color: rgba(11, 60, 155, 0.03);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 40px;
            text-align: center;
        }

        .train-cert h3 {
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 15px;
        }

        .train-cert-badge {
            display: inline-block;
            background-color: var(--primary);
            color: var(--bg-white);
            padding: 8px 20px;
            border-radius: 20px;
            font-weight: 600;
            margin-bottom: 20px;
        }

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

        .review-card {
            background-color: var(--bg-white);
            border-radius: 8px;
            padding: 30px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
        }

        .review-rating {
            color: var(--accent-warm);
            margin-bottom: 15px;
        }

        .review-content {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            font-style: italic;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 15px;
        }

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

        .user-info h4 {
            font-size: 0.95rem;
            margin-bottom: 2px;
        }

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

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            overflow: hidden;
        }

        .faq-question {
            padding: 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            user-select: none;
            background-color: var(--bg-white);
            transition: var(--transition);
        }

        .faq-question:hover {
            background-color: rgba(11, 60, 155, 0.02);
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--text-muted);
            font-size: 0.9rem;
            border-top: 1px solid transparent;
        }

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

        .faq-icon::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary);
        }

        .faq-item.active .faq-icon::after {
            content: '−';
        }

        /* 排查与百科 */
        .troubleshoot-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .troubleshoot-box h3, .wiki-box h3 {
            font-size: 1.5rem;
            margin-bottom: 25px;
            color: var(--primary);
        }

        .troubleshoot-steps {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .troubleshoot-step {
            display: flex;
            gap: 15px;
            background-color: var(--bg-white);
            padding: 15px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
        }

        .ts-num {
            width: 28px;
            height: 28px;
            background-color: var(--primary);
            color: var(--bg-white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .ts-info h4 {
            font-size: 0.95rem;
            margin-bottom: 4px;
        }

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

        .wiki-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 15px;
        }

        .wiki-item {
            background-color: var(--bg-white);
            padding: 15px;
            border-radius: 6px;
            border: 1px solid var(--border-color);
        }

        .wiki-item h4 {
            color: var(--primary);
            font-size: 0.95rem;
            margin-bottom: 6px;
        }

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

        /* 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .news-card {
            background-color: var(--bg-white);
            border-radius: 8px;
            padding: 25px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

        .news-date {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .news-card h3 {
            font-size: 1.15rem;
            margin: 10px 0;
        }

        .news-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .news-card a {
            color: var(--primary);
            text-decoration: none;
            font-size: 0.85rem;
            font-weight: 600;
        }

        .news-card a:hover {
            text-decoration: underline;
        }

        /* 智能需求匹配 (表单) */
        .form-section {
            background-color: var(--bg-white);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: center;
        }

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

        .form-intro p {
            color: var(--text-muted);
            margin-bottom: 25px;
        }

        .form-intro ul {
            list-style: none;
        }

        .form-intro li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 12px;
            font-size: 0.95rem;
        }

        .form-intro li::before {
            content: '✓';
            color: var(--primary);
            position: absolute;
            left: 0;
            font-weight: 700;
        }

        .contact-form {
            background-color: var(--bg-light);
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

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

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 0.95rem;
            background-color: var(--bg-white);
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(11, 60, 155, 0.1);
        }

        /* 联系我们与二维码 */
        .contact-info-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 50px;
        }

        .contact-details h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .contact-details p {
            margin-bottom: 12px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .contact-details strong {
            color: var(--text-main);
        }

        .kefu-container {
            background-color: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
        }

        .kefu-qrcode {
            max-width: 180px;
            margin: 0 auto 20px;
            border: 4px solid var(--bg-white);
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
        }

        .kefu-qrcode img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 友情链接与页脚 */
        footer {
            background-color: #0c1a30;
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 20px;
            font-size: 0.9rem;
            border-top: none;
        }

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

        .footer-col h4 {
            color: var(--bg-white);
            margin-bottom: 20px;
            font-size: 1.1rem;
        }

        .footer-col p {
            line-height: 1.8;
            margin-bottom: 15px;
        }

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

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

        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 5px;
        }

        .friend-links-area {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 25px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            align-items: center;
        }

        .friend-links-area span {
            color: var(--bg-white);
            font-weight: 600;
        }

        .friend-links-area a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            font-size: 0.85rem;
            transition: var(--transition);
        }

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

        .copyright-area {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .ai-page-home-link {
            color: var(--accent);
            text-decoration: none;
            font-weight: 600;
        }

        .ai-page-home-link:hover {
            text-decoration: underline;
        }

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

        .float-item {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--primary);
            color: var(--bg-white);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-md);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            position: relative;
        }

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

        .float-item .popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: var(--bg-white);
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 8px;
            box-shadow: var(--shadow-lg);
            display: none;
            width: 150px;
            text-align: center;
        }

        .float-item .popover img {
            width: 100%;
            height: auto;
            border-radius: 4px;
        }

        .float-item .popover p {
            color: var(--text-main);
            font-size: 0.75rem;
            margin-top: 8px;
            font-weight: bold;
        }

        .float-item:hover .popover {
            display: block;
        }

        .back-to-top {
            display: none;
        }

        /* 响应式媒体查询 */
        @media (max-width: 992px) {
            .about-grid, .network-grid, .train-grid, .form-grid, .contact-info-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .case-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-content.active {
                grid-template-columns: 1fr;
            }
            .timeline::after {
                left: 31px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            .timeline-item::after {
                left: 21px;
            }
            .left {
                text-align: left;
            }
            .right {
                left: 0;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: var(--bg-white);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
                gap: 10px;
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: flex;
            }
            .nav-btns {
                display: none;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .case-grid, .reviews-grid {
                grid-template-columns: 1fr;
            }
            .form-group-row {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .troubleshoot-grid {
                grid-template-columns: 1fr;
            }
        }