:root {
            --primary: #FF5722;
            --primary-hover: #F4511E;
            --primary-light: #FBE9E7;
            --secondary: #FF9800;
            --dark: #212121;
            --gray: #666666;
            --light: #F9F9F9;
            --white: #FFFFFF;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.05);
            --shadow-hover: 0 15px 40px rgba(255, 87, 34, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --border-radius: 12px;
            --container-width: 1200px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--dark);
            background-color: var(--white);
            line-height: 1.6;
            overflow-x: hidden;
            scroll-behavior: smooth;
        }

        /* 统一容器 */
        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
            z-index: 1000;
            transition: var(--transition);
        }

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

        .logo-area {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .ai-page-logo {
            height: 40px;
            width: auto;
            object-fit: contain;
        }

        .logo-text {
            font-size: 1.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        nav {
            display: flex;
            align-items: center;
            gap: 24px;
        }

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

        .nav-menu a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            padding: 8px 12px;
            border-radius: 6px;
        }

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

        .nav-btn-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            border-radius: var(--border-radius);
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: var(--white);
            box-shadow: 0 4px 15px rgba(255, 87, 34, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 87, 34, 0.4);
        }

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

        .btn-outline:hover {
            background-color: var(--primary-light);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            transition: var(--transition);
        }

        /* 移动端侧边栏 */
        .mobile-nav {
            position: fixed;
            top: 70px;
            left: -100%;
            width: 100%;
            height: calc(100vh - 70px);
            background-color: var(--white);
            z-index: 999;
            transition: var(--transition);
            padding: 40px 24px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .mobile-nav.active {
            left: 0;
        }

        .mobile-nav a {
            font-size: 1.2rem;
            color: var(--dark);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px solid #eee;
            padding-bottom: 12px;
        }

        /* 核心区 Section */
        section {
            padding: 80px 0;
            position: relative;
        }

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

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px auto;
        }

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

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 2px;
        }

        .section-header p {
            color: var(--gray);
            font-size: 1.05rem;
        }

        /* Hero首屏 - 严禁图片 */
        .hero-section {
            padding: 160px 0 100px 0;
            background: linear-gradient(135deg, #FFF5F2 0%, #FFFDFB 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -20%;
            left: -10%;
            width: 50%;
            height: 60%;
            background: radial-gradient(circle, rgba(255,87,34,0.08) 0%, transparent 70%);
            z-index: 1;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -10%;
            right: -10%;
            width: 40%;
            height: 50%;
            background: radial-gradient(circle, rgba(255,152,0,0.08) 0%, transparent 70%);
            z-index: 1;
        }

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

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.9rem;
            margin-bottom: 24px;
            border: 1px solid rgba(255,87,34,0.2);
        }

        h1.hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--dark);
            margin-bottom: 24px;
        }

        h1.hero-title span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-subtitle {
            font-size: 1.2rem;
            color: var(--gray);
            margin-bottom: 40px;
            max-width: 750px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 50px;
            flex-wrap: wrap;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .stat-card {
            background-color: var(--white);
            padding: 24px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            border: 1px solid rgba(0, 0, 0, 0.03);
            transition: var(--transition);
        }

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

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--gray);
            font-weight: 500;
        }

        /* 关于我们 / 平台介绍 */
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

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

        .about-text p {
            color: var(--gray);
            margin-bottom: 20px;
            font-size: 1.05rem;
        }

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .about-feature-item {
            background: var(--white);
            padding: 20px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            border-left: 4px solid var(--primary);
        }

        .about-feature-item h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--dark);
        }

        .about-feature-item p {
            font-size: 0.9rem;
            color: var(--gray);
            margin-bottom: 0;
        }

        /* 全平台AIGC服务 - 标签云与模型墙 */
        .model-list-wrapper {
            background-color: var(--white);
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }

        .model-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .model-tag {
            padding: 8px 16px;
            background-color: var(--light);
            border: 1px solid #eef0f2;
            border-radius: 30px;
            font-size: 0.95rem;
            color: var(--dark);
            font-weight: 500;
            transition: var(--transition);
        }

        .model-tag:hover {
            background-color: var(--primary);
            color: var(--white);
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* 一站式AIGC制作 - 核心服务卡片 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background-color: var(--white);
            padding: 35px 24px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            border: 1px solid rgba(0, 0, 0, 0.02);
            transition: var(--transition);
            text-align: center;
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
        }

        .service-icon {
            width: 60px;
            height: 60px;
            background-color: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px auto;
            color: var(--primary);
            font-size: 1.5rem;
            font-weight: 700;
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .service-card p {
            color: var(--gray);
            font-size: 0.95rem;
        }

        /* 解决方案与流程 */
        .step-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            background-color: var(--white);
            padding: 30px 20px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            text-align: center;
            position: relative;
        }

        .step-num {
            position: absolute;
            top: -20px;
            left: 50%;
            transform: translateX(-50%);
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: var(--white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            box-shadow: 0 4px 10px rgba(255, 87, 34, 0.3);
        }

        .step-card h3 {
            margin-top: 15px;
            font-size: 1.15rem;
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 0.9rem;
            color: var(--gray);
        }

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

        .solution-card {
            background-color: var(--white);
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid rgba(0,0,0,0.03);
        }

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

        .solution-body {
            padding: 24px;
        }

        .solution-body h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .solution-body p {
            font-size: 0.95rem;
            color: var(--gray);
        }

        /* 技术标准 */
        .tech-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

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

        .tech-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 18px;
            font-size: 1.05rem;
            color: var(--dark);
        }

        .tech-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary);
            font-weight: bold;
            font-size: 1.1rem;
        }

        /* 案例中心 - 带图模块 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .case-card {
            background-color: var(--white);
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background-color: #eee;
        }

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

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

        .case-info {
            padding: 20px;
        }

        .case-info h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }

        .case-info p {
            font-size: 0.9rem;
            color: var(--gray);
        }

        /* 对比评测 - 突出 9.9分 */
        .evaluation-box {
            background-color: var(--white);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 40px;
            border: 2px solid var(--primary-light);
        }

        .eval-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 2px solid #f5f5f5;
            padding-bottom: 30px;
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .eval-score-card {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .score-big {
            font-size: 3.5rem;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
        }

        .score-details {
            font-size: 1.1rem;
            font-weight: 700;
        }

        .stars {
            color: #FFC107;
            font-size: 1.4rem;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

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

        .eval-table th, .eval-table td {
            padding: 16px 20px;
            border-bottom: 1px solid #eeeeee;
        }

        .eval-table th {
            background-color: var(--light);
            font-weight: 700;
            color: var(--dark);
        }

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

        .highlight-td {
            font-weight: bold;
            color: var(--primary);
        }

        /* Token比价 */
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .price-card {
            background-color: var(--white);
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            padding: 30px 24px;
            text-align: center;
            border: 1px solid #eee;
            transition: var(--transition);
        }

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

        .price-card.featured {
            border: 2px solid var(--primary);
            position: relative;
        }

        .price-card.featured::before {
            content: "推荐";
            position: absolute;
            top: 15px;
            right: 15px;
            background-color: var(--primary);
            color: var(--white);
            padding: 2px 8px;
            font-size: 0.75rem;
            border-radius: 4px;
            font-weight: bold;
        }

        .price-model {
            font-size: 1.25rem;
            font-weight: bold;
            margin-bottom: 15px;
        }

        .price-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 15px;
        }

        .price-unit {
            font-size: 0.9rem;
            color: var(--gray);
        }

        .price-features {
            list-style: none;
            margin: 20px 0;
            text-align: left;
        }

        .price-features li {
            padding: 8px 0;
            border-bottom: 1px dashed #eee;
            font-size: 0.9rem;
            color: var(--gray);
        }

        /* 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .training-card {
            background-color: var(--white);
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }

        .training-badge {
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 10px;
            border-radius: 8px;
            font-weight: bold;
            font-size: 0.9rem;
            white-space: nowrap;
        }

        .training-info h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }

        .training-info p {
            font-size: 0.9rem;
            color: var(--gray);
        }

        /* 需求匹配表单 */
        .form-section-inner {
            max-width: 800px;
            margin: 0 auto;
            background-color: var(--white);
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 0.95rem;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 1rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 87, 34, 0.1);
        }

        textarea.form-control {
            min-height: 120px;
            resize: vertical;
        }

        /* FAQ折叠面板 */
        .faq-accordion {
            max-width: 900px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: var(--white);
            border-radius: var(--border-radius);
            margin-bottom: 15px;
            box-shadow: var(--shadow);
            overflow: hidden;
            border: 1px solid rgba(0,0,0,0.02);
        }

        .faq-question {
            padding: 20px 24px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
            transition: var(--transition);
        }

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

        .faq-icon {
            font-size: 1.4rem;
            transition: transform 0.3s ease;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 24px;
            color: var(--gray);
            font-size: 0.95rem;
        }

        .faq-item.active .faq-answer {
            padding: 0 24px 20px 24px;
            max-height: 300px;
        }

        /* 客户评论卡片 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .comment-card {
            background-color: var(--white);
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            border-top: 4px solid var(--primary);
        }

        .comment-text {
            font-style: italic;
            color: var(--gray);
            margin-bottom: 20px;
            font-size: 0.95rem;
        }

        .comment-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

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

        .author-info h4 {
            font-size: 0.95rem;
            margin-bottom: 2px;
        }

        .author-info span {
            font-size: 0.8rem;
            color: #999;
        }

        /* AI术语百科 */
        .百科-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .百科-card {
            background: var(--white);
            padding: 24px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            border: 1px solid rgba(0, 0, 0, 0.03);
        }

        .百科-card h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--primary);
        }

        .百科-card p {
            font-size: 0.85rem;
            color: var(--gray);
        }

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

        .article-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .article-list {
            background-color: var(--white);
            padding: 30px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
        }

        .article-list h3 {
            margin-bottom: 20px;
            border-bottom: 2px solid var(--primary-light);
            padding-bottom: 10px;
        }

        .article-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid #eee;
        }

        .article-item a {
            color: var(--dark);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
        }

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

        .article-date {
            font-size: 0.85rem;
            color: #999;
        }

        /* 加盟代理与联系我们 */
        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
        }

        .agent-card {
            background: linear-gradient(135deg, #FFF5F2, #FFF3E0);
            padding: 40px;
            border-radius: var(--border-radius);
            border-left: 6px solid var(--primary);
        }

        .agent-card h3 {
            font-size: 1.6rem;
            color: var(--primary);
            margin-bottom: 15px;
        }

        .agent-list {
            margin: 20px 0;
            list-style: none;
        }

        .agent-list li {
            padding: 8px 0;
            position: relative;
            padding-left: 24px;
            font-weight: 600;
        }

        .agent-list li::before {
            content: "🔥";
            position: absolute;
            left: 0;
        }

        .contact-info-card {
            background-color: var(--white);
            padding: 40px;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            text-align: center;
            border: 1px solid #eee;
        }

        .qr-code-box {
            width: 180px;
            height: 180px;
            margin: 20px auto;
            border: 1px solid #eee;
            padding: 10px;
            border-radius: 8px;
            background-color: var(--white);
        }

        .qr-code-box img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .contact-details {
            text-align: left;
            margin-top: 24px;
        }

        .contact-details p {
            margin-bottom: 10px;
            font-size: 0.95rem;
        }

        .contact-details strong {
            color: var(--primary);
        }

        /* 浮动客服入口 */
        .floating-service {
            position: fixed;
            right: 20px;
            bottom: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: var(--white);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 15px rgba(0,0,0,0.15);
            text-decoration: none;
            font-weight: bold;
            font-size: 0.85rem;
            cursor: pointer;
            transition: var(--transition);
            border: none;
        }

        .float-btn:hover {
            transform: scale(1.1);
        }

        /* 友情链接与页脚 */
        footer {
            background-color: #1a1a1a;
            color: #b0b0b0;
            padding: 60px 0 20px 0;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
            border-bottom: 1px solid #333;
            padding-bottom: 40px;
            margin-bottom: 30px;
        }

        .footer-brand h3 {
            color: var(--white);
            margin-bottom: 15px;
        }

        .footer-links h4 {
            color: var(--white);
            margin-bottom: 15px;
        }

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

        .footer-links ul li {
            margin-bottom: 8px;
        }

        .footer-links a {
            color: #b0b0b0;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .friend-links-box {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 15px;
        }

        .friend-links-box a {
            color: #999;
            text-decoration: none;
            font-size: 0.85rem;
            transition: var(--transition);
            background-color: #2a2a2a;
            padding: 4px 10px;
            border-radius: 4px;
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .ai-page-home-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: bold;
        }

        /* 自适应调整 */
        @media (max-width: 1024px) {
            .stats-grid, .service-grid, .solutions-grid, .case-grid, .comments-grid, .百科-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu, .nav-btn-group {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            h1.hero-title {
                font-size: 2rem;
            }
            .stats-grid, .service-grid, .solutions-grid, .case-grid, .comments-grid, .step-grid, .百科-grid, .price-grid, .training-grid {
                grid-template-columns: 1fr;
            }
            .about-grid, .tech-grid, .contact-grid, .article-grid, .footer-grid {
                grid-template-columns: 1fr;
            }
            .about-features {
                grid-template-columns: 1fr;
            }
        }