:root {
            --primary: #10b981;
            --primary-hover: #059669;
            --primary-light: #ecfdf5;
            --dark: #1f2937;
            --dark-light: #4b5563;
            --bg-gray: #f9fafb;
            --border-color: #e5e7eb;
            --accent-green: #34d399;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
        }

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

        html {
            font-family: var(--font-family);
            scroll-behavior: smooth;
            color: var(--dark);
            background-color: var(--bg-gray);
        }

        body {
            line-height: 1.6;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

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

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

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

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

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

        .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-header p {
            color: var(--dark-light);
            margin-top: 15px;
            font-size: 1.1rem;
        }

        /* 按钮通用样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 8px;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
        }

        .btn-secondary {
            background-color: #ffffff;
            color: var(--primary);
            border: 2px solid var(--primary);
        }

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

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

        .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;
            gap: 20px;
            list-style: none;
        }

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

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

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

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

        /* Hero首屏 - 严格限制：无图片，采用几何与科技色块 */
        .hero-section {
            background: radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.08) 0%, transparent 50%), 
                        linear-gradient(135deg, #ffffff 0%, #f0fdf4 100%);
            padding: 100px 0 120px;
            text-align: center;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-badge {
            background-color: var(--primary-light);
            color: var(--primary-hover);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 25px;
            border: 1px solid rgba(16, 185, 129, 0.2);
        }

        .hero-title {
            font-size: 3rem;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 25px;
            font-weight: 800;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--dark-light);
            max-width: 800px;
            margin: 0 auto 40px;
        }

        .hero-cta {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 60px;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 900px;
            margin: 0 auto;
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.8);
            border: 1px solid rgba(16, 185, 129, 0.15);
            padding: 20px;
            border-radius: 12px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
            backdrop-filter: blur(5px);
            transition: all 0.3s ease;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            background: #ffffff;
            box-shadow: 0 10px 15px rgba(16, 185, 129, 0.05);
        }

        .stat-num {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-hover);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--dark-light);
        }

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

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

        .about-text p {
            color: var(--dark-light);
            margin-bottom: 15px;
            font-size: 1.05rem;
            line-height: 1.7;
        }

        .about-img-box {
            position: relative;
        }

        .about-img-box img {
            border-radius: 12px;
            width: 100%;
            box-shadow: 0 10px 20px rgba(0,0,0,0.08);
        }

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

        .service-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            transition: all 0.3s ease;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px rgba(16, 185, 129, 0.08);
            border-color: var(--primary);
        }

        .service-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .service-card p {
            color: var(--dark-light);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 15px;
        }

        .tag-item {
            background: var(--bg-gray);
            font-size: 0.75rem;
            color: var(--dark-light);
            padding: 4px 10px;
            border-radius: 4px;
            border: 1px solid var(--border-color);
        }

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

        .process-step {
            text-align: center;
            position: relative;
            background: #ffffff;
            padding: 30px 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .step-num {
            width: 45px;
            height: 45px;
            background: var(--primary);
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
            margin: 0 auto 20px;
        }

        .process-step h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .process-step p {
            font-size: 0.9rem;
            color: var(--dark-light);
        }

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

        .solution-card {
            display: flex;
            background: #ffffff;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            border-color: var(--primary);
        }

        .solution-img {
            width: 40%;
            background-size: cover;
            background-position: center;
            min-height: 200px;
        }

        .solution-content {
            padding: 30px;
            width: 60%;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .solution-content h3 {
            margin-bottom: 12px;
            font-size: 1.25rem;
        }

        .solution-content p {
            color: var(--dark-light);
            font-size: 0.9rem;
        }

        /* 服务网络 与 标准化服务全流程 */
        .flex-box {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
        }

        .flex-half {
            flex: 1;
            min-width: 300px;
        }

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

        .network-list li {
            padding: 12px 15px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .network-list li span.badge {
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 2px 8px;
            font-size: 0.75rem;
            border-radius: 4px;
            font-weight: 600;
        }

        .timeline {
            position: relative;
            border-left: 2px solid var(--primary);
            padding-left: 20px;
            margin-left: 10px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 25px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -27px;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #ffffff;
            border: 3px solid var(--primary);
        }

        .timeline-title {
            font-weight: 700;
            margin-bottom: 5px;
        }

        .timeline-desc {
            font-size: 0.85rem;
            color: var(--dark-light);
        }

        /* 对比评测 - 表格设计 */
        .comparison-table-wrapper {
            overflow-x: auto;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            background: #ffffff;
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 800px;
        }

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

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

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

        .comparison-table .highlight-row {
            background-color: rgba(16, 185, 129, 0.03);
        }

        .badge-star {
            color: #f59e0b;
            font-weight: bold;
        }

        .rating-banner {
            background: var(--primary-light);
            border: 1px dashed var(--primary);
            border-radius: 8px;
            padding: 15px;
            text-align: center;
            margin-top: 20px;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--primary-hover);
        }

        /* Token 比价 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .price-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px;
            text-align: center;
            transition: all 0.3s;
        }

        .price-card:hover {
            border-color: var(--primary);
            box-shadow: 0 8px 20px rgba(16, 185, 129, 0.05);
        }

        .price-card.featured {
            border-color: var(--primary);
            box-shadow: 0 8px 24px rgba(16, 185, 129, 0.1);
            position: relative;
        }

        .price-card.featured::top {
            content: '推荐';
            position: absolute;
            top: 0;
            right: 0;
            background: var(--primary);
            color: #fff;
        }

        .price-value {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-hover);
            margin: 15px 0;
        }

        /* 培训板块 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .training-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
        }

        .training-list {
            list-style: none;
            margin-top: 15px;
        }

        .training-list li {
            padding: 8px 0;
            border-bottom: 1px dashed var(--border-color);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .training-list li::before {
            content: '✓';
            color: var(--primary);
            font-weight: bold;
        }

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

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

        .case-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .case-info {
            padding: 20px;
        }

        .case-info h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .case-info p {
            color: var(--dark-light);
            font-size: 0.88rem;
        }

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

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

        .faq-question {
            padding: 20px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #ffffff;
            user-select: none;
        }

        .faq-question::after {
            content: '+';
            font-size: 1.2rem;
            color: var(--primary);
            transition: transform 0.3s;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: var(--bg-gray);
        }

        .faq-answer-content {
            padding: 20px;
            font-size: 0.95rem;
            color: var(--dark-light);
            border-top: 1px solid var(--border-color);
        }

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

        .review-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px;
            position: relative;
        }

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

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

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

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

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

        .contact-info-card {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
            color: #ffffff;
            border-radius: 12px;
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

        .contact-details {
            list-style: none;
            margin-bottom: 30px;
        }

        .contact-details li {
            margin-bottom: 15px;
            font-size: 1rem;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 20px;
        }

        .qr-item {
            text-align: center;
            background: rgba(255, 255, 255, 0.1);
            padding: 10px;
            border-radius: 8px;
            flex: 1;
        }

        .qr-item img {
            width: 100px;
            height: 100px;
            object-fit: cover;
            border-radius: 4px;
            margin-bottom: 5px;
        }

        .qr-item span {
            font-size: 0.75rem;
            display: block;
        }

        .form-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            outline: none;
            transition: border 0.3s;
            font-family: inherit;
        }

        .form-control:focus {
            border-color: var(--primary);
        }

        /* 术语百科与排查 */
        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

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

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

        /* 文章列表 */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .article-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 25px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

        .article-card p {
            font-size: 0.85rem;
            color: var(--dark-light);
            margin-bottom: 20px;
        }

        .article-card a {
            color: var(--primary-hover);
            font-weight: 600;
            font-size: 0.9rem;
        }

        /* 页脚 */
        footer {
            background-color: #1f2937;
            color: #9ca3af;
            padding: 60px 0 30px;
            font-size: 0.9rem;
        }

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

        .footer-brand h4 {
            color: #ffffff;
            font-size: 1.2rem;
            margin-bottom: 15px;
        }

        .footer-links h5 {
            color: #ffffff;
            margin-bottom: 15px;
        }

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

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

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

        .footer-bottom {
            border-top: 1px solid #374151;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friend-links {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }

        .friend-links a {
            color: #9ca3af;
        }

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

        /* 侧边悬浮浮窗 */
        .floating-widget {
            position: fixed;
            right: 20px;
            bottom: 80px;
            z-index: 1000;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
            cursor: pointer;
            position: relative;
        }

        .float-btn:hover {
            background: var(--primary-light);
            border-color: var(--primary);
        }

        .float-btn .tooltip-qr {
            position: absolute;
            right: 60px;
            bottom: 0;
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 15px;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            display: none;
            text-align: center;
            width: 140px;
        }

        .float-btn .tooltip-qr img {
            width: 110px;
            height: 110px;
            object-fit: cover;
            border-radius: 4px;
        }

        .float-btn .tooltip-qr span {
            color: var(--dark);
            font-size: 0.75rem;
            margin-top: 5px;
            display: block;
        }

        .float-btn:hover .tooltip-qr {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .services-grid, .case-grid, .reviews-grid, .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .form-section-wrapper {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: #ffffff;
                border-top: 1px solid var(--border-color);
                box-shadow: 0 8px 16px rgba(0,0,0,0.05);
                padding: 20px;
                gap: 15px;
            }
            .nav-menu.active {
                display: flex;
            }
            .mobile-menu-btn {
                display: block;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .services-grid, .process-flow, .solutions-grid, .case-grid, .reviews-grid, .price-grid, .training-grid, .glossary-grid, .article-grid {
                grid-template-columns: 1fr;
            }
            .solution-card {
                flex-direction: column;
            }
            .solution-img, .solution-content {
                width: 100%;
            }
        }