:root {
            --primary: #10B981;
            --primary-dark: #059669;
            --primary-light: #D1FAE5;
            --primary-bg: #F0FDF4;
            --text-main: #1F2937;
            --text-muted: #4B5563;
            --bg-light: #F9FAFB;
            --white: #FFFFFF;
            --border-color: #E5E7EB;
            --max-width: 1200px;
            --transition: all 0.3s ease;
        }

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

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

        a {
            color: var(--primary-dark);
            text-decoration: none;
            transition: var(--transition);
        }

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

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

        /* 顶部导航 */
        header {
            background-color: var(--white);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

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

        .logo-area img {
            height: 40px;
            width: auto;
        }

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

        .nav-menu a {
            color: var(--text-main);
            font-weight: 500;
            font-size: 14px;
        }

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

        .nav-btn {
            background-color: var(--primary);
            color: var(--white) !important;
            padding: 8px 16px;
            border-radius: 6px;
            font-weight: bold;
        }

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

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-main);
            cursor: pointer;
        }

        /* Hero 首屏 - 无图片，纯科技质感 */
        .hero-section {
            background: linear-gradient(135deg, var(--primary-bg) 0%, #FFFFFF 100%);
            padding: 100px 0 80px 0;
            text-align: center;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .hero-section h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-main);
            margin-bottom: 20px;
        }

        .hero-section p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 35px auto;
        }

        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 50px;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--white);
            padding: 14px 28px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

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

        .btn-secondary {
            background-color: var(--white);
            color: var(--text-main);
            border: 1px solid var(--border-color);
            padding: 14px 28px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

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

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

        .metric-card {
            background: var(--white);
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }

        .metric-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 15px -3px rgba(16, 185, 129, 0.1);
        }

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

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

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

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

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

        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 15px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
        }

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

        .about-content h3 {
            font-size: 24px;
            margin-bottom: 15px;
            color: var(--text-main);
        }

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

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

        .feature-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            color: var(--text-main);
            font-weight: 500;
        }

        .feature-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--primary-dark);
            font-weight: bold;
            font-size: 18px;
        }

        /* 全平台AIGC服务体系 - 模型展示 */
        .models-container {
            background-color: var(--primary-bg);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--primary-light);
        }

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

        .tag-item {
            background-color: var(--white);
            color: var(--text-main);
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }

        .tag-item:hover {
            background-color: var(--primary);
            color: var(--white);
            border-color: var(--primary);
        }

        /* 服务能力卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

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

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

        .service-icon {
            width: 50px;
            height: 50px;
            background-color: var(--primary-light);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary-dark);
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }

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

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

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

        .step-num {
            width: 36px;
            height: 36px;
            background-color: var(--primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            margin: 0 auto 15px auto;
        }

        .step-card h4 {
            font-size: 16px;
            margin-bottom: 8px;
        }

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

        /* 案例展示 - 支持图片 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
        }

        .case-image-wrapper {
            position: relative;
            background-color: #f3f4f6;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 200px;
        }

        .case-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            max-height: 300px;
        }

        .case-info {
            padding: 24px;
        }

        .case-tag {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .case-info h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }

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

        /* 对比评测 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            background-color: var(--white);
        }

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

        .evaluation-table th, .evaluation-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

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

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

        .badge-score {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background-color: #FFFBEB;
            color: #D97706;
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: 700;
        }

        /* Token 比价 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .price-card {
            background-color: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
        }

        .price-card.featured {
            border-color: var(--primary);
            box-shadow: 0 4px 15px rgba(16,185,129,0.15);
            position: relative;
        }

        .price-card.featured::after {
            content: "超值推荐";
            position: absolute;
            top: 15px;
            right: 15px;
            background-color: var(--primary);
            color: var(--white);
            font-size: 11px;
            padding: 2px 8px;
            border-radius: 50px;
            font-weight: bold;
        }

        .price-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .price-num {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary-dark);
            margin: 15px 0;
        }

        .price-list {
            list-style: none;
            font-size: 14px;
            color: var(--text-muted);
            text-align: left;
            margin-bottom: 20px;
        }

        .price-list li {
            padding: 6px 0;
            border-bottom: 1px dotted var(--border-color);
        }

        /* 用户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .review-card {
            background-color: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.01);
        }

        .review-text {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            font-style: italic;
        }

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

        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 14px;
        }

        .user-info h5 {
            font-size: 14px;
            font-weight: 700;
        }

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

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

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

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-question::after {
            content: "+";
            font-size: 20px;
            color: var(--primary-dark);
            font-weight: bold;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.2s ease-out;
            background-color: var(--bg-light);
        }

        .faq-answer-inner {
            padding: 18px 24px;
            font-size: 14px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
        }

        /* 自助排查与百科 */
        .help-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .help-box {
            background-color: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
        }

        .help-box h3 {
            font-size: 18px;
            margin-bottom: 15px;
            color: var(--text-main);
        }

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

        .trouble-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

        .trouble-list li strong {
            color: var(--primary-dark);
        }

        /* 知识库 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .article-card {
            background-color: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .article-card h3 {
            font-size: 16px;
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .article-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        .article-card a {
            font-size: 14px;
            font-weight: bold;
        }

        /* 联系我们 & 表单 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .contact-info-panel {
            background-color: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 35px;
        }

        .contact-info-panel h3 {
            font-size: 22px;
            margin-bottom: 20px;
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 25px;
            align-items: center;
        }

        .qr-box {
            text-align: center;
            font-size: 12px;
            color: var(--text-muted);
        }

        .qr-box img {
            width: 100px;
            height: 100px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 6px;
        }

        .form-panel {
            background-color: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 35px;
        }

        .form-panel h3 {
            font-size: 22px;
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
        }

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

        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-light);
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        /* 页脚 */
        footer {
            background-color: #111827;
            color: #9CA3AF;
            padding: 60px 0 30px 0;
            font-size: 14px;
        }

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

        .footer-logo img {
            height: 40px;
            margin-bottom: 15px;
        }

        .footer-column h4 {
            color: var(--white);
            margin-bottom: 15px;
            font-size: 16px;
        }

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

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

        .footer-links a {
            color: #9CA3AF;
        }

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

        .footer-bottom {
            border-top: 1px solid #1F2937;
            padding-top: 25px;
            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;
            font-size: 13px;
        }

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

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

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: var(--primary);
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
            cursor: pointer;
            position: relative;
            transition: var(--transition);
        }

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

        .float-qr {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: var(--white);
            padding: 10px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            display: none;
        }

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

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

        /* 响应式调整 */
        @media (max-width: 992px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .about-grid, .help-grid, .contact-layout {
                grid-template-columns: 1fr;
            }
            .services-grid, .price-grid, .reviews-grid, .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: var(--white);
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
                gap: 15px;
            }
            .nav-menu.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .hero-section h1 {
                font-size: 28px;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary, .btn-secondary {
                width: 100%;
                max-width: 300px;
            }
            .metrics-grid, .services-grid, .price-grid, .reviews-grid, .articles-grid, .case-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
        }