:root {
            --primary: #10B981;
            --primary-hover: #059669;
            --primary-light: #E6FBF3;
            --dark: #111827;
            --gray-dark: #374151;
            --gray-light: #F3F4F6;
            --gray-border: #E5E7EB;
            --white: #FFFFFF;
            --max-width: 1200px;
        }

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

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

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

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

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

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

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

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

        .brand-name {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--dark);
        }

        .nav-links {
            display: flex;
            gap: 20px;
            list-style: none;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: var(--white);
            padding: 8px 20px;
            border-radius: 6px;
            font-weight: 600;
        }

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

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            transition: 0.3s;
        }

        /* Hero首屏 - 无图片 */
        .hero {
            background: radial-gradient(circle at 80% 20%, var(--primary-light) 0%, var(--white) 100%);
            padding: 100px 0 80px;
            text-align: center;
            border-bottom: 1px solid var(--gray-border);
        }

        .hero-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-hover);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .hero h1 {
            font-size: 2.5rem;
            color: var(--dark);
            line-height: 1.25;
            margin-bottom: 20px;
            font-weight: 800;
        }

        .hero p {
            font-size: 1.125rem;
            max-width: 800px;
            margin: 0 auto 40px;
            color: var(--gray-dark);
        }

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

        .btn-main {
            background-color: var(--primary);
            color: var(--white) !important;
            padding: 15px 35px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
            transition: all 0.3s ease;
        }

        .btn-main:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
        }

        .btn-sub {
            background-color: var(--white);
            color: var(--dark);
            border: 1px solid var(--gray-border);
            padding: 15px 35px;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            transition: all 0.3s ease;
        }

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

        /* 核心卖点 / 数据指标 */
        .stats-section {
            padding: 50px 0;
            background-color: var(--white);
            border-bottom: 1px solid var(--gray-border);
        }

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

        .stat-card {
            padding: 20px;
            background-color: var(--white);
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
            transition: transform 0.3s;
        }

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

        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--gray-dark);
            font-weight: 600;
        }

        /* 关于我们与平台介绍 */
        .section-about {
            padding: 80px 0;
            background-color: var(--gray-light);
        }

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

        .about-text h2 {
            font-size: 2rem;
            color: var(--dark);
            margin-bottom: 20px;
            position: relative;
        }

        .about-text h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 4px;
            background-color: var(--primary);
            margin-top: 10px;
        }

        .about-text p {
            margin-bottom: 20px;
            font-size: 1rem;
            color: var(--gray-dark);
        }

        .feature-bullets {
            list-style: none;
            margin-top: 20px;
        }

        .feature-bullets li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 12px;
            font-weight: 500;
        }

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

        .about-media {
            background-color: var(--white);
            padding: 20px;
            border-radius: 16px;
            border: 1px solid var(--gray-border);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
        }

        .about-media img {
            border-radius: 8px;
            width: 100%;
            display: block;
        }

        /* 核心服务与模型聚合 */
        .section-services {
            padding: 80px 0;
            background-color: var(--white);
        }

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

        .section-title h2 {
            font-size: 2.2rem;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .section-title p {
            color: var(--gray-dark);
            max-width: 600px;
            margin: 0 auto;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: var(--white);
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            padding: 30px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

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

        .service-card:hover::before {
            transform: scaleX(1);
        }

        .service-card:hover {
            box-shadow: 0 15px 30px rgba(0,0,0,0.08);
            transform: translateY(-5px);
        }

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

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

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

        /* 平台标签云 */
        .platform-tag-cloud {
            margin-top: 40px;
            padding: 20px;
            background-color: var(--gray-light);
            border-radius: 12px;
            text-align: center;
        }

        .platform-tag-cloud h4 {
            margin-bottom: 15px;
            color: var(--dark);
        }

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

        .platform-tag {
            background-color: var(--white);
            border: 1px solid var(--gray-border);
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--gray-dark);
        }

        .platform-tag:hover {
            background-color: var(--primary-light);
            color: var(--primary-hover);
            border-color: var(--primary);
        }

        /* 一站式AIGC流程与技术标准 */
        .section-workflow {
            padding: 80px 0;
            background-color: var(--gray-light);
        }

        .workflow-timeline {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 50px;
            flex-wrap: wrap;
            gap: 30px;
        }

        .workflow-step {
            flex: 1;
            min-width: 200px;
            background-color: var(--white);
            padding: 30px 20px;
            border-radius: 10px;
            border: 1px solid var(--gray-border);
            position: relative;
            text-align: center;
        }

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

        .workflow-step h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: var(--dark);
        }

        .workflow-step p {
            font-size: 0.88rem;
            color: var(--gray-dark);
        }

        /* 案例中心 */
        .section-cases {
            padding: 80px 0;
            background-color: var(--white);
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            overflow: hidden;
            background-color: var(--white);
            transition: all 0.3s;
        }

        .case-card:hover {
            box-shadow: 0 10px 25px rgba(0,0,0,0.08);
            transform: translateY(-3px);
        }

        .case-image {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }

        .case-info {
            padding: 25px;
        }

        .case-tag {
            color: var(--primary);
            font-size: 0.85rem;
            font-weight: 600;
            text-transform: uppercase;
            margin-bottom: 8px;
            display: inline-block;
        }

        .case-info h3 {
            font-size: 1.3rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .case-info p {
            font-size: 0.95rem;
            color: var(--gray-dark);
        }

        /* 对比评测 */
        .section-compare {
            padding: 80px 0;
            background-color: var(--gray-light);
        }

        .rating-box {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
            margin-bottom: 40px;
            background-color: var(--white);
            padding: 20px;
            border-radius: 10px;
            border: 1px solid var(--gray-border);
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .stars {
            color: #F59E0B;
            font-size: 1.5rem;
        }

        .score {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--dark);
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            background-color: var(--white);
            border-radius: 12px;
            border: 1px solid var(--gray-border);
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
        }

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

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

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

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

        .highlight-row {
            background-color: var(--primary-light);
            font-weight: 600;
        }

        /* Token比价与培训 */
        .section-pricing-training {
            padding: 80px 0;
            background-color: var(--white);
        }

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

        .pricing-card, .training-card {
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            padding: 40px;
            background-color: var(--white);
        }

        .pricing-card h3, .training-card h3 {
            font-size: 1.6rem;
            color: var(--dark);
            margin-bottom: 20px;
            border-left: 4px solid var(--primary);
            padding-left: 15px;
        }

        .price-list, .training-list {
            list-style: none;
        }

        .price-list li, .training-list li {
            display: flex;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px dashed var(--gray-border);
        }

        .price-list li:last-child, .training-list li:last-child {
            border-bottom: none;
        }

        .price-val {
            color: var(--primary-hover);
            font-weight: 700;
        }

        /* 客户评价 */
        .section-testimonials {
            padding: 80px 0;
            background-color: var(--gray-light);
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .testimonial-card {
            background-color: var(--white);
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
            transition: all 0.3s;
        }

        .testimonial-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 15px;
        }

        .user-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary-hover);
            font-size: 1.2rem;
        }

        .user-info h4 {
            font-size: 1rem;
            color: var(--dark);
        }

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

        .testimonial-content {
            font-size: 0.92rem;
            color: var(--gray-dark);
            font-style: italic;
        }

        /* FAQ与帮助中心 */
        .section-faq {
            padding: 80px 0;
            background-color: var(--white);
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 50px;
        }

        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .faq-item {
            border: 1px solid var(--gray-border);
            border-radius: 8px;
            overflow: hidden;
        }

        .faq-header {
            background-color: var(--gray-light);
            padding: 15px 20px;
            cursor: pointer;
            font-weight: 600;
            color: var(--dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            transition: background-color 0.3s;
        }

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

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

        .faq-item.active .faq-header::after {
            content: '-';
            transform: rotate(180deg);
        }

        .faq-content {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease-out;
            background-color: var(--white);
        }

        .faq-item.active .faq-content {
            padding: 20px;
            max-height: 500px;
            border-top: 1px solid var(--gray-border);
        }

        .sidebar-box {
            background-color: var(--gray-light);
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            padding: 30px;
            height: fit-content;
        }

        .sidebar-box h3 {
            font-size: 1.3rem;
            color: var(--dark);
            margin-bottom: 20px;
        }

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

        .term-list li {
            margin-bottom: 15px;
            padding-bottom: 15px;
            border-bottom: 1px solid var(--gray-border);
        }

        .term-list li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }

        .term-title {
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 5px;
        }

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

        /* 需求匹配与联系我们 */
        .section-contact {
            padding: 80px 0;
            background-color: var(--gray-light);
        }

        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
        }

        .contact-info-box {
            background-color: var(--white);
            border: 1px solid var(--gray-border);
            border-radius: 12px;
            padding: 40px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

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

        .contact-item strong {
            width: 90px;
            color: var(--dark);
        }

        .qr-codes {
            display: flex;
            gap: 30px;
            margin-top: 30px;
        }

        .qr-card {
            text-align: center;
        }

        .qr-card img {
            width: 120px;
            height: 120px;
            border: 1px solid var(--gray-border);
            border-radius: 8px;
            padding: 5px;
            margin-bottom: 8px;
        }

        .qr-card p {
            font-size: 0.85rem;
            font-weight: 600;
        }

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

        .form-box h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 25px;
        }

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

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--dark);
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--gray-border);
            border-radius: 6px;
            font-size: 0.95rem;
            color: var(--dark);
            background-color: var(--white);
            transition: border-color 0.3s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
        }

        .btn-submit {
            width: 100%;
            background-color: var(--primary);
            color: var(--white);
            border: none;
            padding: 15px;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s;
        }

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

        /* 资讯与知识库 */
        .section-news {
            padding: 80px 0;
            background-color: var(--white);
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .news-card {
            border: 1px solid var(--gray-border);
            border-radius: 8px;
            padding: 25px;
            background-color: var(--white);
            transition: all 0.3s;
        }

        .news-card:hover {
            box-shadow: 0 8px 20px rgba(0,0,0,0.05);
            transform: translateY(-3px);
            border-color: var(--primary);
        }

        .news-date {
            font-size: 0.8rem;
            color: var(--gray-dark);
            margin-bottom: 10px;
            display: block;
        }

        .news-card h3 {
            font-size: 1.15rem;
            color: var(--dark);
            margin-bottom: 15px;
            line-height: 1.4;
        }

        .news-card p {
            font-size: 0.9rem;
            color: var(--gray-dark);
            margin-bottom: 15px;
        }

        .news-link {
            font-size: 0.9rem;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .news-link:hover {
            color: var(--primary-hover);
        }

        /* 加盟代理说明 */
        .section-partner {
            padding: 60px 0;
            background: linear-gradient(135deg, var(--dark) 0%, #1F2937 100%);
            color: var(--white);
            text-align: center;
        }

        .partner-content h2 {
            font-size: 2rem;
            margin-bottom: 15px;
        }

        .partner-content p {
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }

        /* 页脚 */
        footer {
            background-color: #111827;
            color: #9CA3AF;
            padding: 60px 0 30px;
            border-top: 1px solid #1F2937;
        }

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

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

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

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

        .footer-col ul li a:hover {
            color: var(--white);
        }

        .footer-col p {
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 15px;
            margin-top: 10px;
        }

        .friend-links a {
            font-size: 0.85rem;
            color: #9CA3AF;
        }

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

        .footer-bottom {
            border-top: 1px solid #1F2937;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.85rem;
        }

        /* 侧边浮动导航 */
        .floating-contact {
            position: fixed;
            right: 20px;
            bottom: 100px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            background-color: var(--white);
            border: 1px solid var(--gray-border);
            width: 50px;
            height: 50px;
            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;
            transition: all 0.3s;
        }

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

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

        .float-qr {
            position: absolute;
            right: 60px;
            top: 50%;
            transform: translateY(-50%) scale(0.9);
            background-color: var(--white);
            border: 1px solid var(--gray-border);
            padding: 10px;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            opacity: 0;
            pointer-events: none;
            transition: all 0.3s;
            text-align: center;
            width: 140px;
        }

        .float-qr img {
            width: 120px;
            height: 120px;
            display: block;
        }

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

        .float-btn:hover .float-qr {
            opacity: 1;
            transform: translateY(-50%) scale(1);
            pointer-events: auto;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .services-grid, .testimonials-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }

            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--white);
                border-bottom: 1px solid var(--gray-border);
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }

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

            .nav-container {
                position: relative;
            }

            .about-layout, .pricing-grid, .contact-layout, .faq-layout, .cases-grid {
                grid-template-columns: 1fr;
            }

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

            .hero h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .services-grid, .testimonials-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }