/* 基础变量与重置 */
        :root {
            --primary: #E91E63;
            --primary-hover: #D81B60;
            --primary-light: #FCE4EC;
            --accent: #FF4081;
            --dark: #2C3E50;
            --dark-light: #34495E;
            --light: #FDFBFB;
            --gray-100: #F8F9FA;
            --gray-200: #E9ECEF;
            --gray-300: #DEE2E6;
            --shadow-sm: 0 2px 4px rgba(233, 30, 99, 0.05);
            --shadow-md: 0 4px 12px rgba(233, 30, 99, 0.08);
            --shadow-lg: 0 10px 25px rgba(233, 30, 99, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font);
            color: var(--dark);
            background-color: var(--light);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 布局容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 统一标题组件 */
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2.2rem;
            color: var(--dark);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            margin: 10px auto 0;
            border-radius: 2px;
        }

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

        /* 按钮样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 30px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 30px;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            box-shadow: var(--shadow-sm);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #ffffff !important;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(233, 30, 99, 0.4);
            filter: brightness(1.05);
        }

        .btn-secondary {
            background-color: var(--primary-light);
            color: var(--primary) !important;
            border: 1px solid rgba(233, 30, 99, 0.2);
        }

        .btn-secondary:hover {
            background-color: var(--primary);
            color: #ffffff !important;
            transform: translateY(-2px);
        }

        /* 导航栏 */
        .header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--gray-200);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
        }

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

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

        .ai-page-logo {
            max-height: 45px;
            width: auto;
        }

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

        .nav-item a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            padding: 8px 12px;
            border-radius: 4px;
        }

        .nav-item a:hover,
        .nav-item a.active {
            color: var(--primary);
            background-color: var(--primary-light);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
        }

        /* Hero首屏 - 严禁出现任何图片资源 */
        .hero {
            background: radial-gradient(circle at 80% 20%, #FFF0F5 0%, #FFFFFF 100%);
            padding: 100px 0 80px;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -10%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 64, 129, 0.08) 0%, transparent 70%);
            z-index: 0;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -5%;
            right: 5%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(233, 30, 99, 0.08) 0%, transparent 70%);
            z-index: 0;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero-badge {
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 20px;
            border: 1px solid rgba(233, 30, 99, 0.2);
            animation: pulse 2s infinite;
        }

        .hero-title {
            font-size: 2.5rem;
            line-height: 1.3;
            color: var(--dark);
            margin-bottom: 24px;
            font-weight: 800;
        }

        .hero-title span {
            color: var(--primary);
            background: linear-gradient(90deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--dark-light);
            margin-bottom: 40px;
            line-height: 1.8;
        }

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

        /* 核心数据卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
        }

        .stat-card {
            background-color: #ffffff;
            padding: 25px 20px;
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }

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

        .stat-card h3 {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 5px;
        }

        .stat-card p {
            font-size: 0.9rem;
            color: var(--dark-light);
        }

        /* 关于我们 */
        .about {
            padding: 80px 0;
            background-color: #ffffff;
        }

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

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

        .about-content p {
            color: var(--dark-light);
            margin-bottom: 20px;
            font-size: 1.05rem;
            line-height: 1.8;
        }

        .about-features {
            list-style: none;
        }

        .about-features li {
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 500;
        }

        .about-features li::before {
            content: '✓';
            color: var(--primary);
            font-weight: bold;
            font-size: 1.1rem;
        }

        .software-box {
            background: linear-gradient(135deg, #FFF0F5 0%, #FFE4E1 100%);
            border-left: 5px solid var(--primary);
            padding: 30px;
            border-radius: 0 12px 12px 0;
        }

        .software-box h4 {
            color: var(--primary);
            font-size: 1.2rem;
            margin-bottom: 10px;
        }

        /* 服务体系 & 核心场景 */
        .services {
            padding: 80px 0;
            background-color: var(--gray-100);
        }

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

        .service-card {
            background-color: #ffffff;
            border-radius: 12px;
            padding: 35px 25px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(233, 30, 99, 0.05);
            transition: var(--transition);
        }

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

        .service-icon {
            width: 60px;
            height: 60px;
            background-color: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.5rem;
            font-weight: bold;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .service-card p {
            font-size: 0.95rem;
            color: var(--dark-light);
            margin-bottom: 20px;
        }

        .model-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 15px;
            border-top: 1px solid var(--gray-200);
            padding-top: 15px;
        }

        .model-badge {
            background-color: var(--gray-100);
            color: var(--dark-light);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.75rem;
            border: 1px solid var(--gray-300);
        }

        /* 全自动AIGC制作流程 + 标准化服务流程 */
        .process-section {
            padding: 80px 0;
            background-color: #ffffff;
        }

        .timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
            padding: 20px 0;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            width: 4px;
            height: 100%;
            background-color: var(--primary-light);
            transform: translateX(-50%);
        }

        .timeline-item {
            position: relative;
            width: 50%;
            padding: 20px 40px;
            box-sizing: border-box;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-item::after {
            content: '';
            position: absolute;
            width: 16px;
            height: 16px;
            background-color: var(--primary);
            border: 4px solid #ffffff;
            border-radius: 50%;
            top: 30px;
            z-index: 1;
            box-shadow: 0 0 0 4px var(--primary-light);
        }

        .timeline-item:nth-child(odd)::after {
            right: -10px;
        }

        .timeline-item:nth-child(even)::after {
            left: -10px;
        }

        .timeline-content {
            background-color: var(--gray-100);
            padding: 20px;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
        }

        .timeline-content h3 {
            color: var(--primary);
            font-size: 1.15rem;
            margin-bottom: 8px;
        }

        .timeline-content p {
            font-size: 0.9rem;
            color: var(--dark-light);
        }

        /* 解决方案 */
        .solutions {
            padding: 80px 0;
            background-color: var(--gray-100);
        }

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

        .solution-card {
            background-color: #ffffff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--gray-200);
            transition: var(--transition);
        }

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

        .solution-body {
            padding: 30px;
        }

        .solution-body h3 {
            font-size: 1.25rem;
            color: var(--dark);
            margin-bottom: 15px;
        }

        .solution-body ul {
            list-style: none;
            margin-bottom: 20px;
        }

        .solution-body ul li {
            font-size: 0.9rem;
            color: var(--dark-light);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .solution-body ul li::before {
            content: '●';
            color: var(--primary);
            font-size: 0.7rem;
        }

        /* 服务网络 */
        .network {
            padding: 80px 0;
            background-color: #ffffff;
            text-align: center;
        }

        .network-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .network-card {
            background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
            padding: 25px;
            border-radius: 8px;
            border: 1px solid var(--gray-300);
            transition: var(--transition);
        }

        .network-card:hover {
            background: var(--primary-light);
            border-color: var(--primary);
        }

        .network-card h4 {
            color: var(--dark);
            margin-bottom: 10px;
        }

        .network-card p {
            font-size: 0.85rem;
            color: var(--dark-light);
        }

        /* 技术标准 */
        .standards {
            padding: 80px 0;
            background-color: var(--gray-100);
        }

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

        .standard-box {
            background-color: #ffffff;
            padding: 30px;
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
            border-top: 4px solid var(--primary);
        }

        .standard-box h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--dark);
        }

        .standard-box p {
            font-size: 0.95rem;
            color: var(--dark-light);
            line-height: 1.7;
        }

        /* 案例中心 - 包含指定素材图 */
        .cases {
            padding: 80px 0;
            background-color: #ffffff;
        }

        .case-gallery {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }

        .case-gallery-item {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--gray-200);
            transition: var(--transition);
            background-color: var(--gray-100);
        }

        .case-gallery-item:hover {
            transform: scale(1.03);
            box-shadow: var(--shadow-lg);
        }

        .case-gallery-item img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .case-info {
            padding: 15px;
        }

        .case-info h4 {
            font-size: 0.95rem;
            color: var(--dark);
            margin-bottom: 5px;
        }

        .case-info p {
            font-size: 0.8rem;
            color: var(--primary);
            font-weight: 500;
        }

        /* 横版与方版素材区域 */
        .assets-section {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .asset-box {
            background-color: var(--gray-100);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid var(--gray-200);
        }

        .asset-box h4 {
            margin-bottom: 15px;
            font-size: 1.1rem;
            color: var(--dark);
        }

        .asset-images {
            display: flex;
            gap: 15px;
        }

        .asset-images img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 6px;
        }

        /* 对比评测 - 9.9分推荐度 */
        .evaluation {
            padding: 80px 0;
            background-color: var(--primary-light);
        }

        .eval-container {
            background-color: #ffffff;
            border-radius: 16px;
            padding: 50px 40px;
            box-shadow: var(--shadow-lg);
        }

        .eval-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 2px solid var(--gray-200);
            padding-bottom: 30px;
            margin-bottom: 30px;
        }

        .eval-score-box {
            text-align: right;
        }

        .eval-stars {
            color: #FFC107;
            font-size: 1.8rem;
            margin-bottom: 5px;
        }

        .eval-score {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary);
        }

        .eval-score span {
            font-size: 1.2rem;
            color: var(--dark-light);
        }

        .eval-table-wrapper {
            overflow-x: auto;
        }

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

        .eval-table th, .eval-table td {
            padding: 15px 20px;
            border-bottom: 1px solid var(--gray-200);
        }

        .eval-table th {
            background-color: var(--gray-100);
            color: var(--dark);
            font-weight: 600;
        }

        .eval-table td strong {
            color: var(--primary);
        }

        /* Token 比价 */
        .token-pricing {
            padding: 80px 0;
            background-color: #ffffff;
        }

        .token-table-wrapper {
            overflow-x: auto;
            margin-top: 30px;
        }

        .token-table {
            width: 100%;
            border-collapse: collapse;
        }

        .token-table th, .token-table td {
            padding: 15px;
            border: 1px solid var(--gray-300);
            text-align: center;
        }

        .token-table th {
            background-color: var(--primary-light);
            color: var(--primary);
        }

        .price-tag {
            background-color: #E8F5E9;
            color: #2E7D32;
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: 600;
        }

        /* 职业技术培训 */
        .training {
            padding: 80px 0;
            background-color: var(--gray-100);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .training-card {
            background-color: #ffffff;
            border: 1px solid var(--gray-200);
            border-radius: 8px;
            padding: 20px;
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .training-card h3 {
            font-size: 1rem;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .training-card p {
            font-size: 0.8rem;
            color: var(--primary);
            background-color: var(--primary-light);
            padding: 2px 8px;
            border-radius: 10px;
            display: inline-block;
        }

        /* FAQ折叠面板 */
        .faq {
            padding: 80px 0;
            background-color: #ffffff;
        }

        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--gray-300);
            padding: 15px 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            padding: 10px 0;
        }

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

        .faq-item.active .faq-question::after {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            color: var(--dark-light);
            font-size: 0.95rem;
            padding-right: 30px;
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            margin-top: 10px;
        }

        /* 术语百科 & 自助排查 */
        .wiki-section {
            padding: 80px 0;
            background-color: var(--gray-100);
        }

        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .wiki-card {
            background-color: #ffffff;
            padding: 25px;
            border-radius: 8px;
            border: 1px solid var(--gray-200);
        }

        .wiki-card h4 {
            color: var(--primary);
            margin-bottom: 10px;
        }

        .wiki-card p {
            font-size: 0.85rem;
            color: var(--dark-light);
        }

        /* 用户评论 */
        .reviews {
            padding: 80px 0;
            background-color: #ffffff;
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .review-card {
            background-color: var(--gray-100);
            border-radius: 12px;
            padding: 30px;
            border: 1px solid var(--gray-200);
            position: relative;
        }

        .review-card::before {
            content: '“';
            position: absolute;
            top: 10px;
            left: 20px;
            font-size: 4rem;
            color: rgba(233, 30, 99, 0.1);
            font-family: serif;
        }

        .review-text {
            font-size: 0.95rem;
            color: var(--dark-light);
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .user-avatar {
            width: 45px;
            height: 45px;
            border-radius: 50%;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }

        .user-info h4 {
            font-size: 0.9rem;
            color: var(--dark);
        }

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

        /* 文章列表/知识库 */
        .articles {
            padding: 80px 0;
            background-color: var(--gray-100);
        }

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

        .article-card {
            background-color: #ffffff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--gray-200);
            transition: var(--transition);
        }

        .article-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .article-body {
            padding: 20px;
        }

        .article-body h3 {
            font-size: 1.1rem;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: none;
            font-size: 0.9rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }

        .article-body a:hover {
            text-decoration: underline;
        }

        /* 智能需求匹配与联系我们 */
        .contact {
            padding: 80px 0;
            background-color: #ffffff;
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
        }

        .contact-info {
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

        .contact-details p {
            color: var(--dark-light);
            margin-bottom: 30px;
        }

        .info-item {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
        }

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

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

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

        .qr-item img {
            width: 120px;
            height: 120px;
            border: 1px solid var(--gray-300);
            border-radius: 8px;
            padding: 5px;
            margin-bottom: 8px;
        }

        .qr-item p {
            font-size: 0.85rem;
            color: var(--dark);
            font-weight: 500;
        }

        /* 需求表单 */
        .contact-form {
            background-color: var(--gray-100);
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--gray-200);
            box-shadow: var(--shadow-sm);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--dark);
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--gray-300);
            border-radius: 6px;
            font-family: var(--font);
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px var(--primary-light);
        }

        /* 页脚 */
        .footer {
            background-color: var(--dark);
            color: #ffffff;
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding-bottom: 40px;
            margin-bottom: 30px;
        }

        .footer-logo {
            margin-bottom: 20px;
        }

        .footer-logo img {
            max-height: 40px;
            filter: brightness(0) invert(1);
        }

        .footer-about p {
            color: var(--gray-300);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 400px;
        }

        .footer-links h4 {
            font-size: 1.1rem;
            margin-bottom: 20px;
            position: relative;
        }

        .footer-links h4::after {
            content: '';
            display: block;
            width: 30px;
            height: 2px;
            background-color: var(--primary);
            margin-top: 8px;
        }

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

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

        .footer-links ul li a {
            color: var(--gray-300);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--transition);
        }

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

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .friend-links a {
            color: var(--gray-300);
            text-decoration: none;
            font-size: 0.85rem;
            background-color: rgba(255, 255, 255, 0.05);
            padding: 6px 12px;
            border-radius: 4px;
            transition: var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: var(--gray-300);
        }

        /* 侧边浮动菜单 */
        .float-bar {
            position: fixed;
            right: 20px;
            bottom: 100px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background-color: #ffffff;
            border: 1px solid var(--gray-300);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            text-decoration: none;
            color: var(--dark);
            position: relative;
        }

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

        .float-qr {
            position: absolute;
            right: 60px;
            bottom: 0;
            background-color: #ffffff;
            padding: 10px;
            border: 1px solid var(--gray-300);
            border-radius: 8px;
            box-shadow: var(--shadow-lg);
            display: none;
            text-align: center;
        }

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

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

        /* 关键帧动画 */
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.05); }
            100% { transform: scale(1); }
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .services-grid { grid-template-columns: repeat(2, 1fr); }
            .solutions-grid { grid-template-columns: 1fr 1fr; }
            .network-grid { grid-template-columns: repeat(2, 1fr); }
            .training-grid { grid-template-columns: repeat(3, 1fr); }
            .reviews-grid { grid-template-columns: 1fr 1fr; }
            .case-gallery { grid-template-columns: repeat(2, 1fr); }
            .assets-section { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #ffffff;
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow-md);
                border-top: 1px solid var(--gray-200);
            }
            .nav-menu.show {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .hero-title { font-size: 2rem; }
            .about-grid { grid-template-columns: 1fr; }
            .timeline::before { left: 40px; }
            .timeline-item { width: 100%; text-align: left !important; padding-left: 80px; }
            .timeline-item:nth-child(even) { left: 0; }
            .timeline-item::after { left: 32px !important; }
            .services-grid { grid-template-columns: 1fr; }
            .solutions-grid { grid-template-columns: 1fr; }
            .standards-grid { grid-template-columns: 1fr; }
            .reviews-grid { grid-template-columns: 1fr; }
            .articles-list { grid-template-columns: 1fr; }
            .contact-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .eval-header { flex-direction: column; gap: 20px; text-align: center; }
            .eval-score-box { text-align: center; }
        }