/* 变量定义 - 春绿薄荷清新风 */
        :root {
            --primary: #10B981; /* 薄荷绿 */
            --primary-dark: #059669; /* 深薄荷绿 */
            --primary-light: #ECFDF5; /* 极浅薄荷绿背景 */
            --secondary: #34D399;
            --text-dark: #0F172A; /* 稳重深黛色，确保文字可读性 */
            --text-muted: #4B5563; /* 辅助文字颜色 */
            --bg-light: #F9FAFB;
            --bg-white: #FFFFFF;
            --border-color: #E5E7EB;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
            --shadow-lg: 0 10px 15px -3px rgba(16, 185, 129, 0.1), 0 4px 6px -2px rgba(16, 185, 129, 0.05);
        }

        /* 基础样式重置 */
        * {
            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;
            color: var(--text-dark);
            background-color: var(--bg-light);
        }

        body {
            line-height: 1.6;
            overflow-x: hidden;
        }

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

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

        ul {
            list-style: none;
        }

        /* 栅格与布局系统 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        section {
            padding: 5rem 0;
            position: relative;
        }

        .section-header {
            text-align: center;
            margin-bottom: 3.5rem;
        }

        .section-header h2 {
            font-size: 2.25rem;
            color: var(--text-dark);
            margin-bottom: 1rem;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            display: block;
            width: 50px;
            height: 4px;
            background: var(--primary);
            margin: 0.5rem auto 0;
            border-radius: 2px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto;
        }

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

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .ai-page-logo {
            height: 2.5rem;
            width: auto;
        }

        .brand-name {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: 0.5px;
        }

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

        .nav-link {
            color: var(--text-dark);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.5rem 0.25rem;
            position: relative;
        }

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

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: var(--transition);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-btn {
            background-color: var(--primary);
            color: white !important;
            padding: 0.5rem 1.25rem;
            border-radius: 9999px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: var(--shadow-sm);
        }

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

        /* 移动端菜单控制 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-dark);
        }

        /* Hero首屏 - 严禁出现任何图片，薄荷绿科技风 */
        .hero {
            padding: 8.5rem 0 6rem;
            background: linear-gradient(135deg, #ECFDF5 0%, #D1FAE5 50%, #F0FDF4 100%);
            text-align: center;
            overflow: hidden;
        }

        .hero-content {
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(16, 185, 129, 0.1);
            color: var(--primary-dark);
            padding: 0.4rem 1.2rem;
            border-radius: 9999px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            border: 1px solid rgba(16, 185, 129, 0.2);
            animation: pulse 2s infinite;
        }

        .hero h1 {
            font-size: 3rem;
            line-height: 1.25;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 1.5rem;
            letter-spacing: -0.5px;
        }

        .hero h1 span {
            color: var(--primary-dark);
            background: linear-gradient(to right, #047857, #10B981);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 2.5rem;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 1.25rem;
            margin-bottom: 3.5rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.85rem 2rem;
            font-size: 1.05rem;
            font-weight: 600;
            border-radius: 8px;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-primary {
            background-color: var(--primary);
            color: white;
            box-shadow: var(--shadow-lg);
        }

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

        .btn-secondary {
            background-color: white;
            color: var(--text-dark);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
        }

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

        /* 平台特色标签组 */
        .hero-features {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
            max-width: 800px;
            margin: 0 auto;
        }

        .feature-tag {
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid rgba(16, 185, 129, 0.15);
            padding: 0.5rem 1rem;
            border-radius: 9999px;
            font-size: 0.875rem;
            color: var(--text-dark);
            font-weight: 500;
        }

        /* 数据指标卡片 */
        .stats-bar {
            background-color: var(--bg-white);
            margin-top: -3rem;
            border-radius: 16px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            position: relative;
            z-index: 10;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            padding: 2.5rem 1.5rem;
            gap: 1.5rem;
            text-align: center;
        }

        .stat-item:not(:last-child) {
            border-right: 1px solid var(--border-color);
        }

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1;
            margin-bottom: 0.5rem;
        }

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

        /* 关于我们与平台介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }

        .about-text h3 {
            font-size: 1.75rem;
            color: var(--text-dark);
            margin-bottom: 1.25rem;
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
        }

        .about-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            margin-top: 2rem;
        }

        .about-list-item {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 600;
            color: var(--text-dark);
        }

        .about-list-item svg {
            color: var(--primary);
            flex-shrink: 0;
        }

        .about-visual {
            background: linear-gradient(135deg, var(--primary-light) 0%, #D1FAE5 100%);
            border-radius: 20px;
            padding: 3rem;
            border: 1px dashed var(--primary);
            position: relative;
        }

        .about-badge-card {
            background: white;
            padding: 1.5rem;
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            margin-bottom: 1.5rem;
            border-left: 4px solid var(--primary);
        }

        .about-badge-card h4 {
            font-size: 1.1rem;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }

        .about-badge-card p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* AIGC服务与模型聚合 */
        .bg-gradient-light {
            background: linear-gradient(180deg, var(--bg-white) 0%, var(--primary-light) 100%);
        }

        .model-showcase {
            margin-top: 3rem;
        }

        .model-tags-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.75rem;
            max-width: 1000px;
            margin: 0 auto;
        }

        .model-chip {
            background: white;
            border: 1px solid var(--border-color);
            padding: 0.6rem 1.2rem;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-dark);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .model-chip:hover {
            border-color: var(--primary);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* 能力卡片 */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .service-card {
            background: white;
            border-radius: 16px;
            padding: 2.5rem 2rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary);
        }

        .card-icon {
            width: 3.5rem;
            height: 3.5rem;
            background-color: var(--primary-light);
            color: var(--primary-dark);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 1rem;
            color: var(--text-dark);
        }

        .service-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 1.25rem;
        }

        .card-link {
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
        }

        /* 流程步骤 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-top: 3rem;
            position: relative;
        }

        .process-item {
            background: white;
            padding: 2rem 1.5rem;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .process-step {
            position: absolute;
            top: -1.25rem;
            left: 50%;
            transform: translateX(-50%);
            width: 2.5rem;
            height: 2.5rem;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            border: 4px solid var(--bg-light);
        }

        .process-item h4 {
            margin-top: 1rem;
            margin-bottom: 0.75rem;
            font-size: 1.1rem;
            color: var(--text-dark);
        }

        .process-item p {
            font-size: 0.875rem;
            color: var(--text-muted);
            margin: 0;
        }

        /* 解决方案与网络 */
        .solutions-section {
            background: var(--bg-light);
        }

        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        .solution-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .solution-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }

        .solution-content {
            padding: 2rem;
        }

        .solution-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .solution-content h4 {
            font-size: 1.2rem;
            margin-bottom: 0.75rem;
            color: var(--text-dark);
        }

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

        /* 案例展示区 - 包含横版素材与方版素材 */
        .case-showcase {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .case-item {
            background: white;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .case-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .case-image-wrapper {
            position: relative;
            overflow: hidden;
            background: #E5E7EB;
        }

        /* 控制高度以防图片拉伸错位 */
        .case-image-wrapper.landscape {
            aspect-ratio: 16 / 9;
        }
        
        .case-image-wrapper.square {
            aspect-ratio: 1 / 1;
        }

        .case-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .case-item:hover .case-img {
            transform: scale(1.05);
        }

        .case-info {
            padding: 1.5rem;
        }

        .case-info h4 {
            font-size: 1.1rem;
            color: var(--text-dark);
            margin-bottom: 0.5rem;
        }

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

        /* 对比评测板块 */
        .review-section {
            background: linear-gradient(180deg, var(--bg-white) 0%, var(--primary-light) 100%);
        }

        .review-card {
            background: white;
            border-radius: 20px;
            padding: 3rem;
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(16, 185, 129, 0.2);
            max-width: 1000px;
            margin: 0 auto;
        }

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

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

        .score-big {
            font-size: 4rem;
            font-weight: 900;
            color: var(--primary-dark);
            line-height: 1;
        }

        .score-meta {
            display: flex;
            flex-direction: column;
        }

        .score-stars {
            color: #F59E0B; /* 橙黄色星级 */
            font-size: 1.5rem;
            letter-spacing: 2px;
        }

        .score-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .review-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
        }

        .review-pros h4, .review-cons h4 {
            font-size: 1.2rem;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .review-pros h4 { color: var(--primary-dark); }
        .review-cons h4 { color: var(--text-dark); }

        .review-list li {
            position: relative;
            padding-left: 1.5rem;
            margin-bottom: 0.75rem;
            font-size: 0.95rem;
            color: var(--text-muted);
        }

        .review-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: 700;
        }

        .review-cons .review-list li::before {
            content: "•";
            color: var(--text-muted);
        }

        /* 智能需求匹配与表单 */
        .form-section {
            background-color: var(--bg-white);
        }

        .form-container {
            max-width: 800px;
            margin: 0 auto;
            background: var(--bg-light);
            border-radius: 16px;
            padding: 3rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-md);
        }

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

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .form-group.full-width {
            grid-column: span 2;
        }

        .form-label {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-dark);
        }

        .form-input, .form-select, .form-textarea {
            width: 100%;
            padding: 0.75rem 1rem;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background-color: white;
            font-family: inherit;
            font-size: 0.95rem;
            color: var(--text-dark);
            transition: var(--transition);
        }

        .form-input:focus, .form-select:focus, .form-textarea:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
        }

        /* Token 比价与参考 */
        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            background: white;
            margin-top: 2rem;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 0.95rem;
        }

        .comparison-table th {
            background-color: var(--primary-light);
            color: var(--primary-dark);
            font-weight: 700;
            padding: 1.2rem;
            border-bottom: 2px solid var(--border-color);
        }

        .comparison-table td {
            padding: 1.2rem;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-muted);
        }

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

        .badge-hot {
            background: #EF4444;
            color: white;
            font-size: 0.75rem;
            padding: 0.15rem 0.5rem;
            border-radius: 4px;
            font-weight: 700;
            margin-left: 0.5rem;
        }

        /* 人工智能培训课程 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .course-card {
            background: white;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

        .course-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }

        .course-header {
            background: var(--primary-light);
            padding: 1.5rem;
            border-bottom: 1px solid var(--border-color);
            text-align: center;
        }

        .course-header h4 {
            color: var(--primary-dark);
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }

        .course-meta-tag {
            display: inline-block;
            background: white;
            border: 1px solid rgba(16, 185, 129, 0.3);
            color: var(--text-dark);
            font-size: 0.8rem;
            padding: 0.2rem 0.75rem;
            border-radius: 9999px;
            font-weight: 600;
        }

        .course-body {
            padding: 1.5rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .course-features {
            margin-bottom: 1.5rem;
        }

        .course-features li {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        /* FAQ折叠面板 */
        .faq-grid {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

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

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

        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary);
            transition: var(--transition);
        }

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

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

        .faq-answer-content {
            padding: 1.5rem;
            font-size: 0.95rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
        }

        /* 用户评论 */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .testimonial-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .testimonial-text {
            font-style: italic;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            font-size: 0.95rem;
        }

        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            border-top: 1px solid var(--border-color);
            padding-top: 1rem;
        }

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

        .user-info h5 {
            font-size: 0.95rem;
            color: var(--text-dark);
            margin-bottom: 0.15rem;
        }

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

        /* 资讯与知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: 3rem;
        }

        .news-card {
            background: white;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .news-body {
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            height: 100%;
        }

        .news-body h4 {
            font-size: 1.1rem;
            color: var(--text-dark);
            margin-bottom: 0.75rem;
            line-height: 1.4;
        }

        .news-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 1.25rem;
        }

        /* 智能排查与百科标签云 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.75rem;
            justify-content: center;
            margin-top: 2rem;
        }

        .tag-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            color: var(--text-dark);
            padding: 0.5rem 1rem;
            border-radius: 6px;
            font-size: 0.875rem;
            font-weight: 500;
        }

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

        /* 页脚与联系我们 */
        footer {
            background-color: var(--text-dark);
            color: #E2E8F0;
            padding: 5rem 0 2rem;
            border-top: 4px solid var(--primary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
            gap: 3rem;
            margin-bottom: 4rem;
        }

        .footer-logo-desc h4 {
            font-size: 1.5rem;
            color: white;
            margin-bottom: 1rem;
        }

        .footer-logo-desc p {
            color: #94A3B8;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .footer-links h5 {
            color: white;
            font-size: 1.1rem;
            margin-bottom: 1.25rem;
            position: relative;
        }

        .footer-links h5::after {
            content: '';
            display: block;
            width: 30px;
            height: 2px;
            background: var(--primary);
            margin-top: 0.5rem;
        }

        .footer-links ul {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .footer-links a {
            color: #94A3B8;
            font-size: 0.9rem;
        }

        .footer-links a:hover {
            color: var(--primary);
            padding-left: 5px;
        }

        .footer-contact h5 {
            color: white;
            font-size: 1.1rem;
            margin-bottom: 1.25rem;
        }

        .footer-contact p {
            font-size: 0.9rem;
            color: #94A3B8;
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-qr {
            display: flex;
            align-items: center;
            gap: 1.5rem;
        }

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

        .qr-card img {
            width: 6.5rem;
            height: 6.5rem;
            border-radius: 8px;
            background: white;
            padding: 0.25rem;
            margin-bottom: 0.5rem;
        }

        .qr-card span {
            font-size: 0.8rem;
            color: #94A3B8;
            display: block;
        }

        /* 友情链接与版权 */
        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 2rem;
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.85rem;
            color: #64748B;
        }

        .friend-links a {
            color: #94A3B8;
        }

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

        .copyright-area {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: #64748B;
        }

        /* 侧边浮动客服 */
        .float-bar {
            position: fixed;
            right: 1.5rem;
            bottom: 5rem;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .float-item {
            width: 3rem;
            height: 3rem;
            background: white;
            border-radius: 50%;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            position: relative;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .float-item:hover {
            background: var(--primary);
            color: white !important;
            transform: scale(1.05);
        }

        .float-item svg {
            width: 1.5rem;
            height: 1.5rem;
        }

        .float-popover {
            position: absolute;
            right: 3.5rem;
            bottom: 0;
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 1rem;
            box-shadow: var(--shadow-lg);
            display: none;
            text-align: center;
            width: 160px;
        }

        .float-popover img {
            width: 120px;
            height: 120px;
            margin-bottom: 0.5rem;
        }

        .float-popover span {
            font-size: 0.85rem;
            color: var(--text-dark);
            font-weight: 600;
        }

        .float-item:hover .float-popover {
            display: block;
        }

        /* 响应式样式适配 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-item:nth-child(2) {
                border-right: none;
            }
            .cards-grid, .solutions-grid, .case-showcase, .training-grid, .testimonials-grid, .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 4.5rem;
                left: 0;
                right: 0;
                background: white;
                flex-direction: column;
                padding: 1.5rem;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow-md);
            }

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

            .menu-toggle {
                display: block;
            }

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

            .process-flow {
                grid-template-columns: 1fr;
            }

            .process-item {
                padding-top: 2.5rem;
            }

            .cards-grid, .solutions-grid, .case-showcase, .training-grid, .testimonials-grid, .news-grid {
                grid-template-columns: 1fr;
            }

            .form-grid {
                grid-template-columns: 1fr;
            }

            .form-group.full-width {
                grid-column: span 1;
            }

            .hero h1 {
                font-size: 2.25rem;
            }

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

            .copyright-area {
                flex-direction: column;
                gap: 1rem;
                text-align: center;
            }
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.02); }
            100% { transform: scale(1); }
        }