:root {
            --primary: #10b981; /* 鲜绿 */
            --primary-hover: #059669;
            --primary-light: #ecfdf5;
            --text-main: #1f2937;
            --text-muted: #4b5563;
            --text-light: #9ca3af;
            --bg-body: #f9fafb;
            --bg-card: #ffffff;
            --border-color: #e5e7eb;
            --max-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--bg-body);
            color: var(--text-main);
            line-height: 1.6;
        }

        body {
            position: relative;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Header Style */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(255, 255, 255, 0.95);
            border-bottom: 1px solid var(--border-color);
            backdrop-filter: blur(10px);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 4.5rem;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .ai-page-logo {
            height: 2.2rem;
            width: auto;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 1.5rem;
        }

        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: #ffffff;
            padding: 0.5rem 1.2rem;
            border-radius: 0.375rem;
            font-size: 0.9rem;
            font-weight: 600;
            transition: background-color 0.2s ease, transform 0.2s ease;
        }

        .nav-btn:hover {
            background-color: var(--primary-hover);
            color: #ffffff;
            transform: translateY(-1px);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 0.25rem;
            background: none;
            border: none;
            cursor: pointer;
            padding: 0.25rem;
        }

        .menu-toggle span {
            display: block;
            width: 1.5rem;
            height: 2px;
            background-color: var(--text-main);
            transition: all 0.3s;
        }

        /* Hero Section (No Images) */
        .hero-section {
            background: linear-gradient(135deg, var(--primary-light) 0%, #ffffff 100%);
            padding: 5rem 0 6rem;
            text-align: center;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -20%;
            left: -10%;
            width: 40%;
            height: 60%;
            background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 70%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-tag {
            display: inline-block;
            background-color: rgba(16, 185, 129, 0.1);
            color: var(--primary-hover);
            padding: 0.25rem 1rem;
            border-radius: 9999px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            letter-spacing: 0.05em;
        }

        h1.hero-title {
            font-size: clamp(2rem, 5vw, 3rem);
            line-height: 1.25;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 1.5rem;
            letter-spacing: -0.02em;
        }

        .hero-subtitle {
            font-size: clamp(1rem, 2.5vw, 1.2rem);
            color: var(--text-muted);
            margin-bottom: 2.5rem;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 4rem;
        }

        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
            padding: 0.875rem 2rem;
            border-radius: 0.375rem;
            font-weight: 600;
            transition: all 0.3s;
            box-shadow: 0 4px 10px rgba(16, 185, 129, 0.2);
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(16, 185, 129, 0.3);
        }

        .btn-secondary {
            background-color: #ffffff;
            color: var(--text-main);
            border: 1px solid var(--border-color);
            padding: 0.875rem 2rem;
            border-radius: 0.375rem;
            font-weight: 600;
            transition: all 0.3s;
        }

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

        /* Stats Cards */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            max-width: 1000px;
            margin: 0 auto;
        }

        .stat-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 1.5rem;
            border-radius: 0.5rem;
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 0.5rem;
        }

        .stat-label {
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        /* Main Sections Layout */
        section {
            padding: 5rem 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 3.5rem;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 3px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1rem;
        }

        /* Section Specific Styles */
        .bg-alt {
            background-color: var(--primary-light);
        }

        /* 2. 关于我们 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .about-content h3 {
            font-size: 1.5rem;
            margin-bottom: 1rem;
            color: var(--text-main);
        }

        .about-content p {
            color: var(--text-muted);
            margin-bottom: 1.5rem;
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 1rem;
        }

        .tag-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 0.25rem 0.75rem;
            border-radius: 0.25rem;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 3. 全平台 AIGC 服务 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 2rem;
            border-radius: 0.5rem;
            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 {
            color: var(--primary);
            font-size: 2.5rem;
            margin-bottom: 1rem;
        }

        .service-card h3 {
            margin-bottom: 0.75rem;
            font-size: 1.25rem;
        }

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

        /* Models Marquee */
        .model-list-wrapper {
            margin-top: 2rem;
            overflow: hidden;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 0.5rem;
            padding: 1.5rem;
        }

        .model-list-title {
            text-align: center;
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .model-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.5rem;
        }

        .model-tag {
            background: var(--primary-light);
            color: var(--primary-hover);
            padding: 0.25rem 0.75rem;
            border-radius: 0.25rem;
            font-size: 0.85rem;
            font-weight: 500;
        }

        /* 4. 一站式 AIGC 制作 & 5. 解决方案 & 9. 客户案例中心 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 0.5rem;
            overflow: hidden;
            transition: all 0.3s;
        }

        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .case-img-wrap {
            aspect-ratio: 16 / 9;
            background-color: var(--border-color);
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .case-info {
            padding: 1.5rem;
        }

        .case-badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 0.15rem 0.5rem;
            border-radius: 0.25rem;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
        }

        .case-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .case-desc {
            font-size: 0.875rem;
            color: var(--text-muted);
        }

        /* 6. 全国服务网络 & 7. 流程 & 8. 标准 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .step-item {
            position: relative;
            background: #ffffff;
            padding: 2rem 1.5rem;
            border-radius: 0.5rem;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .step-num {
            position: absolute;
            top: -1.25rem;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #ffffff;
            width: 2.5rem;
            height: 2.5rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            box-shadow: 0 4px 6px rgba(16,185,129,0.2);
        }

        .step-item h3 {
            margin-top: 0.5rem;
            margin-bottom: 0.75rem;
            font-size: 1.1rem;
        }

        .step-item p {
            color: var(--text-muted);
            font-size: 0.875rem;
        }

        /* 10. 对比评测 Table */
        .evaluation-wrap {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 0.75rem;
            padding: 2.5rem;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
        }

        .eval-hero {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 1.5rem;
            margin-bottom: 2rem;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .eval-score {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .score-num {
            font-size: 3.5rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .score-meta h4 {
            font-size: 1.25rem;
            font-weight: 700;
        }

        .score-meta p {
            color: var(--text-light);
            font-size: 0.875rem;
        }

        .score-stars {
            color: #fbbf24;
            font-size: 1.25rem;
        }

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

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

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

        .eval-table th {
            background-color: var(--bg-body);
            font-weight: 700;
            color: var(--text-main);
        }

        .eval-table tr:hover {
            background-color: var(--primary-light);
        }

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

        /* 11. 智能需求匹配 (Form) */
        .form-wrap {
            max-width: 650px;
            margin: 0 auto;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 0.75rem;
            padding: 2.5rem;
            box-shadow: 0 10px 25px rgba(0,0,0,0.03);
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .form-control {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1px solid var(--border-color);
            border-radius: 0.375rem;
            font-size: 0.95rem;
            transition: border-color 0.2s;
            outline: none;
        }

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
        }

        /* 12. Token 比价 & 13. 职业培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
        }

        .training-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 1.75rem;
            border-radius: 0.5rem;
            text-align: center;
            transition: all 0.3s;
        }

        .training-card:hover {
            transform: translateY(-4px);
            border-color: var(--primary);
        }

        .training-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }

        /* 15. 常见用户问题 FAQ */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 0.5rem;
            margin-bottom: 1rem;
            overflow: hidden;
        }

        .faq-header {
            width: 100%;
            padding: 1.25rem 1.5rem;
            background: none;
            border: none;
            text-align: left;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background 0.2s;
        }

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

        .faq-icon-arrow {
            font-size: 0.8rem;
            transition: transform 0.3s;
        }

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

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

        .faq-item.active .faq-body {
            max-height: 200px;
            border-top-width: 1px;
        }

        .faq-content {
            padding: 1.25rem 1.5rem;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 17. 常见问题自助排查 & 18. AI 术语百科 */
        .grid-two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
        }

        .term-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .term-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 1.25rem;
            border-radius: 0.375rem;
        }

        .term-card h4 {
            font-size: 1rem;
            margin-bottom: 0.25rem;
            color: var(--primary-hover);
        }

        /* 19. 行业资讯 / 知识库 */
        .news-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .news-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 1.5rem;
            border-radius: 0.5rem;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .news-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1rem;
            line-height: 1.4;
        }

        .news-card-link {
            font-size: 0.875rem;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
        }

        /* 11. 客户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
            margin-bottom: 3rem;
        }

        .comment-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 1.75rem;
            border-radius: 0.5rem;
            position: relative;
        }

        .comment-text {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 1.25rem;
            font-style: italic;
        }

        .comment-user {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .user-avatar {
            width: 2.5rem;
            height: 2.5rem;
            background-color: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
        }

        .user-info h5 {
            font-size: 0.9rem;
            font-weight: 700;
        }

        .user-info p {
            font-size: 0.75rem;
            color: var(--text-light);
        }

        /* Footer & Contact info */
        footer {
            background-color: #111827;
            color: #f3f4f6;
            padding: 4rem 0 2rem;
            border-top: 1px solid #1f2937;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-brand h3 {
            font-size: 1.5rem;
            color: #ffffff;
            margin-bottom: 1rem;
        }

        .footer-brand p {
            color: #9ca3af;
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
        }

        .footer-links h4 {
            font-size: 1rem;
            color: #ffffff;
            margin-bottom: 1rem;
        }

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

        .footer-links li {
            margin-bottom: 0.75rem;
        }

        .footer-links a {
            color: #9ca3af;
            font-size: 0.875rem;
        }

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

        .footer-contact {
            color: #9ca3af;
            font-size: 0.875rem;
        }

        .footer-contact p {
            margin-bottom: 0.5rem;
        }

        .footer-qr {
            max-width: 100px;
            border-radius: 0.375rem;
            margin-top: 0.5rem;
        }

        .friend-links {
            padding-top: 2rem;
            border-top: 1px solid #1f2937;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
            font-size: 0.85rem;
            color: #9ca3af;
        }

        .friend-links a {
            color: #9ca3af;
            margin-right: 0.5rem;
        }

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

        .copyright-area {
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid #1f2937;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: #6b7280;
            flex-wrap: wrap;
            gap: 1rem;
        }

        /* Floating Widgets */
        .floating-widgets {
            position: fixed;
            right: 1.5rem;
            bottom: 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            z-index: 99;
        }

        .float-btn {
            background-color: #ffffff;
            color: var(--text-main);
            border: 1px solid var(--border-color);
            width: 3rem;
            height: 3rem;
            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: #ffffff;
            border-color: var(--primary);
        }

        .float-qr-popup {
            position: absolute;
            right: 3.5rem;
            bottom: 0;
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 1rem;
            border-radius: 0.5rem;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
            display: none;
            width: 140px;
            text-align: center;
        }

        .float-qr-popup img {
            width: 100%;
            height: auto;
            margin-bottom: 0.5rem;
        }

        .float-qr-popup p {
            font-size: 0.75rem;
            color: var(--text-main);
        }

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

        /* Responsive Design */
        @media (max-width: 1024px) {
            .cases-grid, .news-list, .comments-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 4.5rem;
                left: 0;
                width: 100%;
                background-color: #ffffff;
                border-bottom: 1px solid var(--border-color);
                padding: 1.5rem;
                gap: 1rem;
            }

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

            .menu-toggle {
                display: flex;
            }

            .about-grid, .grid-two-col {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .stats-grid, .process-steps, .cases-grid, .news-list, .comments-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .eval-hero {
                flex-direction: column;
                align-items: flex-start;
            }
        }