/* 变量定义：春绿薄荷清新风 */
        :root {
            --primary: #10B981;        /* 薄荷翠绿 */
            --primary-hover: #059669;  /* 深绿 */
            --primary-light: #E6FBF3;  /* 极浅薄荷绿背景 */
            --bg-base: #F8FAFC;        /* 底色 */
            --bg-card: #FFFFFF;        /* 卡片白 */
            --text-title: #064E3B;     /* 深绿标题色 */
            --text-body: #374151;      /* 深灰正文 */
            --text-muted: #6B7280;     /* 浅灰描述 */
            --border-color: #E5E7EB;   /* 边框线 */
            --accent: #34D399;         /* 辅助薄荷 */
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            --max-width: 1200px;
        }

        /* 全局重置 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--bg-base);
            color: var(--text-body);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

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

        /* 按钮样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
            color: #ffffff;
        }
        .btn-outline {
            background-color: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        .btn-outline: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;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .ai-page-logo {
            height: 40px;
            width: auto;
        }
        .nav-menu {
            display: flex;
            gap: 20px;
            align-items: center;
        }
        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-title);
            cursor: pointer;
        }

        /* Hero首屏 - 严禁出现图片 */
        .hero-section {
            background: linear-gradient(135deg, #F0FDF4 0%, #ECFDF5 50%, #F8FAFC 100%);
            padding: 100px 0 80px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .hero-badge {
            display: inline-block;
            background-color: var(--primary-light);
            color: var(--primary-hover);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(16, 185, 129, 0.2);
        }
        .hero-title {
            font-size: 2.8rem;
            color: var(--text-title);
            line-height: 1.25;
            margin-bottom: 24px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        .hero-desc {
            font-size: 1.2rem;
            color: var(--text-body);
            max-width: 800px;
            margin: 0 auto 36px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }
        
        /* 统计数据卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }
        .stat-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 12px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
            transition: transform 0.3s ease;
        }
        .stat-card:hover {
            transform: translateY(-4px);
        }
        .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: 8px;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 通用区块标题 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            color: var(--text-title);
            margin-bottom: 12px;
            font-weight: 700;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }

        /* 板块样式 */
        .section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .bg-light {
            background-color: var(--primary-light);
        }

        /* 关于我们与软件介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .about-text h3 {
            font-size: 1.6rem;
            color: var(--text-title);
            margin-bottom: 16px;
        }
        .about-features {
            margin-top: 24px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .about-feature-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.95rem;
            font-weight: 500;
        }
        .about-feature-item svg {
            color: var(--primary);
            flex-shrink: 0;
        }

        /* 服务体系 - 标签云 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 30px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }
        .tag-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.2s ease;
        }
        .tag-item:hover {
            background-color: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
            transform: scale(1.05);
        }

        /* AIGC服务体系卡片 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .service-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.01);
        }
        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(16, 185, 129, 0.1);
            border-color: var(--accent);
        }
        .service-card-icon {
            width: 50px;
            height: 50px;
            border-radius: 10px;
            background-color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            margin-bottom: 20px;
        }
        .service-card h3 {
            font-size: 1.25rem;
            color: var(--text-title);
            margin-bottom: 12px;
        }
        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 时间线 - 制作流程与服务流程 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            width: 2px;
            height: 100%;
            background-color: var(--border-color);
            transform: translateX(-50%);
        }
        .timeline-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            margin-bottom: 40px;
            position: relative;
        }
        .timeline-item:nth-child(even) {
            flex-direction: row-reverse;
        }
        .timeline-img {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            z-index: 2;
            box-shadow: 0 0 0 4px var(--primary-light);
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
        }
        .timeline-content {
            width: 45%;
            padding: 24px;
            background-color: var(--bg-card);
            border-radius: 8px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.01);
        }
        .timeline-content h3 {
            font-size: 1.15rem;
            color: var(--text-title);
            margin-bottom: 8px;
        }
        .timeline-content p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        /* 解决方案 (使用横版图与方版图) */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }
        .solution-card {
            background-color: var(--bg-card);
            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);
        }
        .solution-img-wrapper {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .solution-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .solution-body {
            padding: 24px;
        }
        .solution-body h3 {
            font-size: 1.25rem;
            color: var(--text-title);
            margin-bottom: 12px;
        }
        .solution-body p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* 对比评测表格 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
            background-color: var(--bg-card);
        }
        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }
        .comparison-table th, .comparison-table td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-color);
        }
        .comparison-table th {
            background-color: var(--primary-light);
            color: var(--text-title);
            font-weight: 700;
        }
        .comparison-table tr:last-child td {
            border-bottom: none;
        }
        .comparison-table tr:hover {
            background-color: rgba(244, 251, 247, 0.5);
        }
        .badge-score {
            display: inline-block;
            background-color: #FEF3C7;
            color: #D97706;
            padding: 4px 10px;
            border-radius: 4px;
            font-weight: bold;
        }

        /* Token 比价 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }
        .price-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
            transition: all 0.3s ease;
        }
        .price-card.featured {
            border-color: var(--primary);
            box-shadow: 0 8px 24px rgba(16, 185, 129, 0.1);
            position: relative;
        }
        .price-card.featured::after {
            content: '推荐';
            position: absolute;
            top: 12px;
            right: 12px;
            background-color: var(--primary);
            color: white;
            font-size: 0.75rem;
            padding: 2px 8px;
            border-radius: 4px;
            font-weight: 600;
        }
        .price-card h3 {
            font-size: 1.2rem;
            color: var(--text-title);
            margin-bottom: 16px;
        }
        .price-value {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-hover);
            margin-bottom: 16px;
        }
        .price-features {
            list-style: none;
            margin-bottom: 24px;
            font-size: 0.9rem;
            color: var(--text-body);
        }
        .price-features li {
            margin-bottom: 8px;
        }

        /* 客户案例宣传图组 */
        .case-images-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }
        .case-image-item {
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
            transition: transform 0.3s ease;
        }
        .case-image-item:hover {
            transform: scale(1.03);
        }
        .case-image-item img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        /* 表单区域 */
        .form-section {
            background-color: var(--bg-card);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
            padding: 40px;
            max-width: 800px;
            margin: 0 auto;
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group-full {
            grid-column: span 2;
        }
        .form-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-title);
        }
        .form-control {
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-family: inherit;
            font-size: 0.95rem;
            transition: all 0.2s ease;
        }
        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
        }

        /* 客户评论卡片 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }
        .comment-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.01);
            position: relative;
        }
        .comment-text {
            font-size: 0.95rem;
            color: var(--text-body);
            margin-bottom: 16px;
            font-style: italic;
        }
        .comment-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .comment-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary-hover);
        }
        .comment-info h4 {
            font-size: 0.95rem;
            color: var(--text-title);
        }
        .comment-info span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* FAQ 折叠面板 */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: 8px;
            margin-bottom: 12px;
            background-color: var(--bg-card);
            overflow: hidden;
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            color: var(--text-title);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            transition: background-color 0.2s ease;
        }
        .faq-question:hover {
            background-color: var(--primary-light);
        }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            color: var(--text-body);
            font-size: 0.95rem;
        }
        .faq-item.active .faq-answer {
            padding: 18px 24px;
            max-height: 200px;
            border-top: 1px solid var(--border-color);
        }
        .faq-icon {
            transition: transform 0.3s ease;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        /* 资讯 / 知识库 */
        .articles-wrapper {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
            margin-bottom: 40px;
        }
        .article-placeholder {
            padding: 20px;
            background-color: var(--primary-light);
            border-radius: 8px;
            margin-bottom: 24px;
            font-weight: 500;
            color: var(--text-title);
        }
        .article-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 16px;
        }
        .article-link-item {
            padding: 14px;
            border-radius: 6px;
            background-color: var(--bg-base);
            border: 1px solid var(--border-color);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .article-link-item:hover {
            border-color: var(--primary);
            color: var(--primary-hover);
        }

        /* 自助排查与术语百科 */
        .kb-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .kb-box {
            background-color: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: 12px;
        }
        .kb-box h3 {
            font-size: 1.3rem;
            color: var(--text-title);
            margin-bottom: 20px;
            border-left: 4px solid var(--primary);
            padding-left: 12px;
        }
        .kb-list {
            list-style: none;
        }
        .kb-list li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed var(--border-color);
        }
        .kb-list li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }
        .kb-list strong {
            color: var(--text-title);
            display: block;
            margin-bottom: 4px;
        }
        .kb-list span {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        /* 联系我们与页脚 */
        .footer-top {
            background-color: var(--text-title);
            color: #ffffff;
            padding: 60px 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
        }
        .footer-info h3 {
            color: #ffffff;
            font-size: 1.4rem;
            margin-bottom: 16px;
        }
        .footer-contacts p {
            margin-bottom: 12px;
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 10px;
            color: #D1FAE5;
        }
        .footer-qrcode-group {
            display: flex;
            gap: 20px;
            margin-top: 20px;
        }
        .qrcode-box {
            background-color: #ffffff;
            padding: 10px;
            border-radius: 8px;
            width: 120px;
            text-align: center;
        }
        .qrcode-box img {
            width: 100%;
            height: auto;
            border-radius: 4px;
        }
        .qrcode-box span {
            font-size: 0.75rem;
            color: #374151;
            margin-top: 6px;
            display: block;
        }
        .footer-links h4 {
            color: #ffffff;
            margin-bottom: 16px;
            font-size: 1.1rem;
        }
        .footer-link-list {
            list-style: none;
        }
        .footer-link-list li {
            margin-bottom: 8px;
        }
        .footer-link-list a {
            color: #A7F3D0;
            font-size: 0.9rem;
        }
        .footer-link-list a:hover {
            color: #ffffff;
        }
        .footer-bottom {
            background-color: #064030;
            color: #A7F3D0;
            padding: 20px 0;
            font-size: 0.85rem;
            border-top: 1px solid rgba(16, 185, 129, 0.2);
        }
        .footer-bottom-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .friend-links {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .friend-links a {
            color: #A7F3D0;
        }
        .friend-links a:hover {
            color: #ffffff;
        }

        /* 浮动客服入口 */
        .floating-widget {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: var(--primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
        }
        .float-btn:hover {
            background-color: var(--primary-hover);
            transform: scale(1.05);
        }
        .float-btn .tooltip-qr {
            position: absolute;
            bottom: 60px;
            right: 0;
            background-color: #ffffff;
            border: 1px solid var(--border-color);
            padding: 12px;
            border-radius: 8px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
            display: none;
            width: 140px;
            text-align: center;
        }
        .float-btn .tooltip-qr img {
            width: 100%;
            border-radius: 4px;
        }
        .float-btn .tooltip-qr span {
            color: #374151;
            font-size: 0.75rem;
            display: block;
            margin-top: 6px;
        }
        .float-btn:hover .tooltip-qr {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .about-grid, .kb-grid {
                grid-template-columns: 1fr;
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                flex-direction: row !important;
                margin-left: 20px;
            }
            .timeline-img {
                left: 0;
                transform: translateX(-50%);
            }
            .timeline-content {
                width: 90%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #ffffff;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group-full {
                grid-column: span 1;
            }
        }