:root {
            --primary: #3b82f6;
            --primary-hover: #2563eb;
            --secondary: #f97316;
            --secondary-hover: #ea580c;
            --success: #10b981;
            --dark: #0f172a;
            --light: #f8fafc;
            --border: #e2e8f0;
            --text-main: #334155;
            --text-muted: #64748b;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
            --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
        }

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

        html {
            scroll-behavior: smooth;
            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;
        }

        body {
            overflow-x: hidden;
        }

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

        /* 顶部导航 */
        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
        }

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

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

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

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

        .nav-menu a {
            text-decoration: none;
            color: var(--text-main);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }

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

        .nav-menu .ai-page-home-link {
            color: var(--primary);
            font-weight: 700;
        }

        .nav-btn {
            background-color: var(--primary);
            color: #fff !important;
            padding: 8px 18px;
            border-radius: 6px;
            transition: var(--transition);
        }

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

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            background: none;
            border: none;
        }

        .menu-toggle span {
            width: 25px;
            height: 2px;
            background-color: var(--text-main);
            transition: var(--transition);
        }

        /* Hero 区域（严禁图片） */
        .hero {
            padding: 160px 0 100px 0;
            background: linear-gradient(135deg, #eff6ff 0%, #fff 50%, #fffbeb 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .hero-badge {
            display: inline-block;
            background-color: rgba(59, 130, 246, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 9999px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(59, 130, 246, 0.2);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }

        .hero h1 {
            font-size: 42px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.25;
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        .hero p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px auto;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 48px;
        }

        .btn {
            display: inline-block;
            padding: 14px 28px;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(59, 130, 246, 0.4);
        }

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

        .btn-secondary {
            background-color: #fff;
            color: var(--text-main);
            border: 1px solid var(--border);
        }

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

        /* 数据指标 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background-color: #fff;
            padding: 24px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

        .stat-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

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

        .section-bg {
            background-color: #fff;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px auto;
        }

        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            width: 50px;
            height: 4px;
            background-color: var(--primary);
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 2px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 15px;
        }

        /* 关于我们 */
        .about-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }

        .about-text {
            flex: 1;
        }

        .about-text h3 {
            font-size: 22px;
            margin-bottom: 16px;
            color: var(--dark);
        }

        .about-text p {
            margin-bottom: 20px;
            color: var(--text-main);
            text-align: justify;
        }

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

        .feature-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
            font-weight: 500;
        }

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

        /* AIGC 服务体系 - 模型列表 */
        .platform-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 30px;
        }

        .platform-tag {
            background-color: #fff;
            padding: 8px 16px;
            border-radius: 8px;
            border: 1px solid var(--border);
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            box-shadow: 0 2px 4px rgba(0,0,0,0.02);
            transition: var(--transition);
        }

        .platform-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* 服务能力卡片 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background-color: #fff;
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

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

        .service-icon {
            font-size: 32px;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .service-card h3 {
            font-size: 18px;
            margin-bottom: 12px;
            color: var(--dark);
        }

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

        /* 制作流程 & 标准服务流程 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            background-color: #fff;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border);
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px auto;
            font-weight: 700;
        }

        .process-step h4 {
            font-size: 16px;
            margin-bottom: 8px;
            color: var(--dark);
        }

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

        /* 解决方案 */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .solution-card {
            background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .solution-card h3 {
            font-size: 20px;
            color: var(--dark);
        }

        /* 服务网络 & 技术标准 */
        .network-section {
            background-color: #fff;
        }

        .info-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

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

        .info-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
        }

        .info-list li span:first-child {
            font-weight: 600;
            color: var(--dark);
        }

        /* 案例展示区 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            background-color: #fff;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

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

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: #eee;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .case-body {
            padding: 20px;
        }

        .case-body h4 {
            font-size: 16px;
            margin-bottom: 8px;
            color: var(--dark);
        }

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

        /* 对比评测 */
        .comparison-table-wrapper {
            overflow-x: auto;
            background-color: #fff;
            border-radius: 12px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .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);
        }

        .comparison-table th {
            background-color: #f1f5f9;
            font-weight: 700;
            color: var(--dark);
        }

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

        .highlight-col {
            background-color: rgba(59, 130, 246, 0.05);
            font-weight: 600;
        }

        .rating-badge {
            display: inline-block;
            background-color: #fef08a;
            color: #854d0e;
            padding: 4px 10px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 14px;
        }

        /* 需求匹配表单 & 联系我们 */
        .form-section-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .form-container {
            background-color: #fff;
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: 6px;
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }

        .contact-info-panel {
            background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
            color: #fff;
            padding: 40px;
            border-radius: 12px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .contact-details h3 {
            font-size: 24px;
            margin-bottom: 20px;
        }

        .contact-item {
            margin-bottom: 15px;
            font-size: 15px;
        }

        .qrcode-box {
            margin-top: 30px;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 20px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .qrcode-box img {
            width: 100px;
            height: 100px;
            background-color: #fff;
            border-radius: 4px;
            padding: 5px;
        }

        /* 职业技术培训 */
        .training-cards {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }

        .training-card {
            background-color: #fff;
            padding: 20px;
            border-radius: 10px;
            border: 1px solid var(--border);
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--secondary);
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }

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

        /* FAQ折叠面板 */
        .faq-container {
            max-width: 900px;
            margin: 0 auto;
        }

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

        .faq-question {
            padding: 18px 20px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: #fff;
            transition: var(--transition);
        }

        .faq-question:hover {
            background-color: #f8fafc;
        }

        .faq-question::after {
            content: '+';
            font-size: 20px;
            font-weight: 300;
            transition: var(--transition);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background-color: #fafbfc;
            border-top: 0 solid var(--border);
        }

        .faq-item.active .faq-answer {
            border-top-width: 1px;
            max-height: 200px; /* 根据内容自适应 */
            padding: 16px 20px;
        }

        /* 用户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background-color: #fff;
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }

        .review-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }

        .reviewer-info h4 {
            font-size: 15px;
            color: var(--dark);
        }

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

        .review-stars {
            color: #f59e0b;
        }

        .review-content {
            font-size: 14px;
            color: var(--text-main);
            text-align: justify;
        }

        /* 术语百科与排查 */
        .grid-2col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .wiki-card, .trouble-card {
            background-color: #fff;
            padding: 24px;
            border-radius: 10px;
            border: 1px solid var(--border);
        }

        .wiki-list dt, .trouble-list dt {
            font-weight: 700;
            color: var(--dark);
            margin-top: 12px;
        }

        .wiki-list dd, .trouble-list dd {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 12px;
            padding-left: 10px;
            border-left: 2px solid var(--primary);
        }

        /* 资讯与友情链接 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

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

        .news-card h4 {
            margin-bottom: 10px;
        }

        .news-card a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
        }

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

        /* 页脚 */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 50px 0 20px 0;
            border-top: 1px solid #1e293b;
        }

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

        .footer-logo {
            margin-bottom: 20px;
        }

        .footer-logo img {
            height: 35px;
            filter: brightness(0) invert(1);
        }

        .footer-links h4 {
            color: #fff;
            margin-bottom: 16px;
            font-size: 16px;
        }

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

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

        .footer-links ul li a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-links ul li a:hover {
            color: #fff;
        }

        .friend-links {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            align-items: center;
        }

        .friend-links span {
            font-size: 14px;
            color: #64748b;
        }

        .friend-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 13px;
            transition: var(--transition);
        }

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

        .copyright-bar {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            margin-top: 20px;
        }

        /* 侧边悬浮 */
        .float-panel {
            position: fixed;
            right: 20px;
            bottom: 100px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-item {
            background-color: #fff;
            border: 1px solid var(--border);
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-lg);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }

        .float-item:hover {
            background-color: var(--primary);
            color: #fff;
        }

        .float-item svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .qr-popover {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: #fff;
            padding: 15px;
            border-radius: 8px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
            display: none;
            text-align: center;
            width: 140px;
        }

        .qr-popover img {
            width: 110px;
            height: 110px;
        }

        .qr-popover span {
            font-size: 12px;
            color: var(--text-main);
            display: block;
            margin-top: 8px;
        }

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

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .service-grid, .cases-grid, .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-flow {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-cards {
                grid-template-columns: repeat(3, 1fr);
            }
        }

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

            .nav-menu.active {
                display: flex;
            }

            .menu-toggle {
                display: flex;
            }

            .hero h1 {
                font-size: 30px;
            }

            .about-content, .info-grid, .form-section-wrapper, .grid-2col, .footer-grid {
                grid-template-columns: 1fr;
            }

            .about-content {
                gap: 30px;
            }

            .service-grid, .cases-grid, .reviews-grid, .stats-grid, .process-flow, .training-cards, .news-grid {
                grid-template-columns: 1fr;
            }

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