/* 鲜黄耀眼风 根变量设计 */
        :root {
            --primary: #FACC15; /* 耀眼鲜黄 */
            --primary-hover: #E2B600; 
            --dark-bg: #121824; /* 深邃科技蓝黑 */
            --dark-card: #1E293B; /* 卡片深色背景 */
            --light-bg: #F8FAFC; /* 浅色背景 */
            --light-card: #FFFFFF;
            --text-dark: #0F172A;
            --text-light: #F1F5F9;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
            --border-dark: #334155;
            --yellow-glow: 0 0 15px rgba(250, 204, 21, 0.4);
            --max-width: 1200px;
        }

        /* 基础样式重置 */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            scroll-behavior: smooth;
        }

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

        /* 统一外层居中容器 */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 按钮规范 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 8px;
            transition: all 0.3s ease;
            cursor: pointer;
            text-decoration: none;
            border: none;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--text-dark);
            box-shadow: var(--yellow-glow);
        }

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

        .btn-outline {
            background-color: transparent;
            color: var(--text-light);
            border: 2px solid var(--primary);
        }

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

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

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

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

        .brand img {
            height: 40px;
            width: auto;
        }

        .brand span {
            color: var(--text-light);
            font-size: 20px;
            font-weight: 700;
        }

        .brand span span {
            color: var(--primary);
        }

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

        .nav-menu a {
            color: #94A3B8;
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s;
        }

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

        .nav-btn {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
        }

        .menu-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-light);
            transition: 0.3s;
        }

        /* 页面大模块间距 */
        section {
            padding: 80px 0;
        }

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

        .section-header h2 {
            font-size: 32px;
            color: var(--text-dark);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background-color: var(--primary);
            margin: 8px auto 0;
            border-radius: 2px;
        }

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

        /* 首屏 Hero (无任何图片) */
        .hero-section {
            background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
            color: var(--text-light);
            padding: 120px 0 100px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(250,204,21,0.05) 0%, transparent 60%);
            pointer-events: none;
        }

        .hero-badge {
            background-color: rgba(250, 204, 21, 0.1);
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 14px;
            display: inline-block;
            margin-bottom: 25px;
            font-weight: 600;
        }

        .hero-section h1 {
            font-size: 46px;
            line-height: 1.25;
            margin-bottom: 25px;
            font-weight: 800;
        }

        .hero-section h1 span {
            color: var(--primary);
            text-shadow: var(--yellow-glow);
        }

        .hero-desc {
            font-size: 18px;
            color: #94A3B8;
            max-width: 800px;
            margin: 0 auto 40px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .hero-features-list {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 60px;
            flex-wrap: wrap;
        }

        .hero-feat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #CBD5E1;
            font-size: 15px;
        }

        .hero-feat-item svg {
            width: 20px;
            height: 20px;
            fill: var(--primary);
        }

        /* 平台介绍 & 数据指标 */
        .intro-section {
            background-color: var(--light-card);
        }

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

        .intro-content h3 {
            font-size: 26px;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

        .intro-content p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 15px;
        }

        .intro-bullets {
            list-style: none;
            margin-bottom: 30px;
        }

        .intro-bullets li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 12px;
            font-size: 15px;
            font-weight: 500;
        }

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

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .stat-card {
            background-color: var(--light-bg);
            border: 1px solid var(--border-color);
            padding: 30px 20px;
            border-radius: 12px;
            text-align: center;
            transition: all 0.3s;
        }

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

        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 5px;
        }

        .stat-number span {
            color: var(--primary);
        }

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

        /* 全平台AIGC服务 (支持模型标签云 + 场景卡片) */
        .service-section {
            background-color: var(--light-bg);
        }

        .tag-cloud-wrapper {
            background-color: var(--light-card);
            border-radius: 16px;
            padding: 30px;
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
            margin-bottom: 50px;
            border: 1px solid var(--border-color);
        }

        .tag-cloud-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            text-align: center;
            color: var(--text-dark);
        }

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

        .tag-item {
            background-color: var(--light-bg);
            color: var(--text-dark);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid var(--border-color);
            transition: all 0.2s;
        }

        .tag-item:hover {
            background-color: var(--primary);
            border-color: var(--primary);
            transform: scale(1.05);
        }

        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .service-card {
            background-color: var(--light-card);
            border-radius: 12px;
            padding: 30px;
            border: 1px solid var(--border-color);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.05);
            border-color: var(--primary);
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background-color: var(--primary);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-icon {
            width: 50px;
            height: 50px;
            background-color: rgba(250, 204, 21, 0.1);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }

        .service-icon svg {
            width: 24px;
            height: 24px;
            fill: var(--text-dark);
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

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

        /* 一站式AIGC制作 / 流程 / 技术标准 */
        .process-section {
            background-color: var(--light-card);
        }

        .process-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            margin-top: 50px;
        }

        .process-step {
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 60px;
            height: 60px;
            background-color: var(--primary);
            color: var(--text-dark);
            font-size: 24px;
            font-weight: 800;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: var(--yellow-glow);
            position: relative;
            z-index: 2;
        }

        .process-step h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

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

        /* 全行业解决方案 & 服务网络 */
        .solution-section {
            background-color: var(--light-bg);
        }

        .solution-tabs {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .tab-btn {
            padding: 10px 24px;
            background-color: var(--light-card);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            cursor: pointer;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.3s;
        }

        .tab-btn.active, .tab-btn:hover {
            background-color: var(--primary);
            border-color: var(--primary);
            color: var(--text-dark);
        }

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

        .solution-card {
            background-color: var(--light-card);
            border-radius: 12px;
            padding: 30px;
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }

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

        .solution-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
            color: var(--text-dark);
        }

        .solution-card ul {
            list-style: none;
        }

        .solution-card ul li {
            padding-left: 20px;
            position: relative;
            margin-bottom: 10px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .solution-card ul li::before {
            content: "•";
            color: var(--primary);
            position: absolute;
            left: 0;
            font-weight: bold;
            font-size: 18px;
            top: -2px;
        }

        /* 职业技术培训 / 人工智能培训 */
        .training-section {
            background-color: var(--dark-bg);
            color: var(--text-light);
        }

        .training-section .section-header h2 {
            color: var(--text-light);
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }

        .training-card {
            background-color: var(--dark-card);
            border: 1px solid var(--border-dark);
            border-radius: 12px;
            padding: 25px;
            transition: all 0.3s;
        }

        .training-card:hover {
            border-color: var(--primary);
            transform: translateY(-5px);
        }

        .training-badge {
            background-color: rgba(250, 204, 21, 0.1);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            display: inline-block;
            margin-bottom: 15px;
        }

        .training-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--text-light);
        }

        .training-card p {
            color: #94A3B8;
            font-size: 13px;
        }

        /* 对比评测板块 */
        .rating-section {
            background-color: var(--light-card);
        }

        .rating-summary {
            background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
            border-radius: 16px;
            padding: 40px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 50px;
            flex-wrap: wrap;
            gap: 30px;
        }

        .rating-score-box {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .score-big {
            font-size: 72px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .score-meta h4 {
            font-size: 22px;
            margin-bottom: 5px;
        }

        .score-meta p {
            color: #94A3B8;
            font-size: 14px;
        }

        .stars {
            color: var(--primary);
            font-size: 24px;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            background-color: var(--light-card);
        }

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

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

        .comparison-table th {
            background-color: #F1F5F9;
            font-weight: 700;
            color: var(--text-dark);
        }

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

        .highlight-col {
            background-color: rgba(250, 204, 21, 0.05);
            font-weight: 600;
        }

        .comp-tag {
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: bold;
        }

        .comp-tag.yes {
            background-color: rgba(34, 197, 94, 0.1);
            color: #16A34A;
        }

        .comp-tag.no {
            background-color: rgba(239, 68, 68, 0.1);
            color: #DC2626;
        }

        /* Token比价参考 */
        .price-section {
            background-color: var(--light-bg);
        }

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

        .price-card {
            background-color: var(--light-card);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            padding: 40px 30px;
            text-align: center;
            position: relative;
            transition: all 0.3s;
        }

        .price-card.popular {
            border: 2px solid var(--primary);
            transform: scale(1.03);
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
        }

        .popular-badge {
            position: absolute;
            top: -15px;
            left: 50%;
            transform: translateX(-50%);
            background-color: var(--primary);
            color: var(--text-dark);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 700;
        }

        .price-card h3 {
            font-size: 22px;
            margin-bottom: 15px;
            color: var(--text-dark);
        }

        .price-amount {
            font-size: 40px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 20px;
        }

        .price-amount span {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 400;
        }

        .price-features {
            list-style: none;
            margin-bottom: 30px;
            text-align: left;
        }

        .price-features li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
            color: var(--text-muted);
        }

        .price-features li:last-child {
            border-bottom: none;
        }

        /* 客户案例中心 */
        .case-section {
            background-color: var(--light-card);
        }

        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 50px;
        }

        .case-card {
            background-color: var(--light-bg);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }

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

        .case-img-wrapper {
            position: relative;
            overflow: hidden;
            display: block;
        }

        .case-img-wrapper img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.3s;
        }

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

        .case-info {
            padding: 20px;
        }

        .case-info h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--text-dark);
        }

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

        /* 客户评论 */
        .review-section {
            background-color: var(--light-bg);
        }

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

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

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

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

        .user-info h4 {
            font-size: 16px;
            color: var(--text-dark);
        }

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

        /* FAQ折叠面板 & 自助排查 & 百科 */
        .faq-section {
            background-color: var(--light-card);
        }

        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto 50px;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-dark);
            transition: color 0.2s;
        }

        .faq-question:hover {
            color: var(--primary-hover);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            color: var(--text-muted);
            font-size: 14px;
            margin-top: 0;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            margin-top: 15px;
        }

        .faq-icon {
            font-size: 20px;
            font-weight: normal;
            transition: transform 0.3s;
        }

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

        /* AI术语百科 & 自助排查卡片 */
        .wiki-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .wiki-card {
            background-color: var(--light-bg);
            border-radius: 8px;
            padding: 20px;
            border: 1px solid var(--border-color);
        }

        .wiki-card h4 {
            font-size: 16px;
            margin-bottom: 10px;
            color: var(--text-dark);
            border-left: 3px solid var(--primary);
            padding-left: 8px;
        }

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

        /* 行业资讯 & 知识库 */
        .articles-section {
            background-color: var(--light-bg);
        }

        .articles-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .article-card {
            background-color: var(--light-card);
            border-radius: 10px;
            padding: 25px;
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: all 0.3s;
        }

        .article-card:hover {
            border-color: var(--primary);
        }

        .article-card h3 {
            font-size: 18px;
            margin-bottom: 12px;
        }

        .article-card h3 a {
            color: var(--text-dark);
            text-decoration: none;
        }

        .article-card h3 a:hover {
            color: var(--primary-hover);
        }

        .article-meta {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 15px;
        }

        /* 智能需求匹配与联系我们表单 */
        .contact-section {
            background-color: var(--dark-bg);
            color: var(--text-light);
        }

        .contact-section .section-header h2 {
            color: var(--text-light);
        }

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

        .contact-info h3 {
            font-size: 24px;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .contact-info p {
            color: #94A3B8;
            margin-bottom: 30px;
        }

        .contact-methods {
            list-style: none;
            margin-bottom: 40px;
        }

        .contact-methods li {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
            font-size: 15px;
        }

        .contact-methods li svg {
            width: 20px;
            height: 20px;
            fill: var(--primary);
        }

        .qr-codes {
            display: flex;
            gap: 30px;
            align-items: center;
            background-color: var(--dark-card);
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-dark);
        }

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

        .qr-item img {
            width: 120px;
            height: 120px;
            border-radius: 8px;
            margin-bottom: 10px;
        }

        .qr-item p {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 0;
        }

        .contact-form-wrapper {
            background-color: var(--dark-card);
            border-radius: 16px;
            padding: 40px;
            border: 1px solid var(--border-dark);
        }

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

        .contact-form label {
            display: block;
            margin-bottom: 8px;
            font-size: 14px;
            color: #94A3B8;
        }

        .contact-form input,
        .contact-form select,
        .contact-form textarea {
            width: 100%;
            padding: 12px;
            background-color: var(--dark-bg);
            border: 1px solid var(--border-dark);
            border-radius: 8px;
            color: var(--text-light);
            font-size: 14px;
        }

        .contact-form input:focus,
        .contact-form select:focus,
        .contact-form textarea:focus {
            outline: none;
            border-color: var(--primary);
        }

        /* 浮动客服悬浮窗 */
        .floating-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background-color: var(--primary);
            color: var(--text-dark);
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
            cursor: pointer;
            transition: all 0.3s;
        }

        .floating-kefu:hover {
            transform: scale(1.1);
        }

        .floating-kefu svg {
            width: 28px;
            height: 28px;
            fill: var(--text-dark);
        }

        .kefu-popover {
            position: absolute;
            bottom: 75px;
            right: 0;
            background-color: white;
            border-radius: 12px;
            padding: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            width: 220px;
            display: none;
            text-align: center;
            border: 1px solid var(--border-color);
        }

        .kefu-popover.active {
            display: block;
        }

        .kefu-popover img {
            width: 150px;
            height: 150px;
            margin-bottom: 10px;
        }

        .kefu-popover p {
            font-size: 13px;
            color: var(--text-dark);
            margin: 5px 0;
        }

        /* 友情链接与页脚 */
        footer {
            background-color: var(--dark-bg);
            color: #94A3B8;
            padding: 60px 0 30px;
            border-top: 1px solid var(--border-dark);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 40px;
        }

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

        .footer-logo img {
            height: 40px;
            margin-bottom: 10px;
        }

        .footer-logo p {
            font-size: 14px;
        }

        .footer-links h4 {
            color: var(--text-light);
            margin-bottom: 20px;
            font-size: 16px;
        }

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

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

        .footer-links ul li a {
            color: #94A3B8;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .friendly-links {
            border-top: 1px solid var(--border-dark);
            padding-top: 20px;
            margin-top: 20px;
            font-size: 13px;
        }

        .friendly-links a {
            color: #64748B;
            text-decoration: none;
            margin-right: 15px;
            display: inline-block;
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-dark);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            flex-wrap: wrap;
            gap: 15px;
        }

        /* 响应式媒体查询 */
        @media (max-width: 1024px) {
            .solution-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .rating-summary {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: var(--dark-bg);
                padding: 20px;
                border-top: 1px solid var(--border-dark);
                gap: 15px;
            }

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

            .menu-toggle {
                display: flex;
            }

            .intro-grid, .contact-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

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

            .process-timeline::after {
                display: none;
            }

            .solution-grid, .price-grid, .case-grid, .review-grid, .wiki-grid, .articles-list {
                grid-template-columns: 1fr;
            }

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

            .hero-section h1 {
                font-size: 32px;
            }
        }