:root {
            --primary: #4f46e5;
            --primary-light: #6366f1;
            --accent: #f43f5e;
            --gradient-primary: linear-gradient(135deg, #4f46e5, #a855f7, #f43f5e);
            --gradient-bg: linear-gradient(180deg, #f8fafc 0%, #ffffff 100%);
            --text-dark: #0f172a;
            --text-muted: #475569;
            --text-light: #64748b;
            --bg-light: #f8fafc;
            --card-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.05), 0 2px 8px -1px rgba(15, 23, 42, 0.03);
            --card-hover-shadow: 0 20px 25px -5px rgba(79, 70, 229, 0.1), 0 10px 10px -5px rgba(79, 70, 229, 0.04);
            --border-color: rgba(226, 232, 240, 0.8);
            --radius-lg: 16px;
            --radius-md: 8px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-dark);
            background-color: #ffffff;
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        /* 统一外层居中容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
            position: relative;
        }

        .section-title-wrap {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(79, 70, 229, 0.08);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            border-radius: 50px;
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.5px;
            line-height: 1.3;
        }

        .section-desc {
            margin-top: 12px;
            font-size: 16px;
            color: var(--text-muted);
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 导航 */
        header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
        }

        .brand img {
            height: 40px;
            width: auto;
            object-fit: contain;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .nav-link {
            text-decoration: none;
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-md);
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: 2px solid transparent;
        }

        .btn-primary {
            background: var(--gradient-primary);
            color: #ffffff;
            box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2);
        }

        .btn-primary:hover {
            opacity: 0.95;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(79, 70, 229, 0.3);
        }

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

        .btn-outline:hover {
            background: rgba(79, 70, 229, 0.05);
            transform: translateY(-2px);
        }

        /* 移动端导航切换 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-dark);
            margin: 5px 0;
            transition: var(--transition);
        }

        /* Hero首屏 - 严禁出现任何图片 */
        .hero {
            background: radial-gradient(circle at 80% 20%, rgba(168, 85, 247, 0.1) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(79, 70, 229, 0.08) 0%, transparent 50%),
                        var(--bg-light);
            padding: 120px 0;
            text-align: center;
            border-bottom: 1px solid var(--border-color);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            background: #ffffff;
            border: 1px solid rgba(79, 70, 229, 0.15);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 24px;
            box-shadow: var(--card-shadow);
        }

        .hero-title {
            font-size: 48px;
            font-weight: 850;
            line-height: 1.2;
            color: var(--text-dark);
            max-width: 900px;
            margin: 0 auto 24px;
            letter-spacing: -1px;
        }

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

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto 40px;
            line-height: 1.8;
        }

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

        .hero-btn-large {
            padding: 16px 36px;
            font-size: 16px;
            border-radius: var(--radius-lg);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: -50px;
            position: relative;
            z-index: 10;
        }

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

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

        .stat-num {
            font-size: 36px;
            font-weight: 850;
            color: var(--primary);
            margin-bottom: 8px;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
        }

        .stat-desc {
            font-size: 13px;
            color: var(--text-light);
        }

        /* 关于我们与平台介绍 */
        .about-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .about-text h3 {
            font-size: 26px;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--text-dark);
        }

        .about-p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 24px;
            line-height: 1.8;
        }

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

        .about-feature-item {
            background: var(--bg-light);
            padding: 16px 20px;
            border-radius: var(--radius-md);
            border-left: 4px solid var(--primary);
        }

        .about-feature-title {
            font-weight: 700;
            color: var(--text-dark);
            font-size: 15px;
            margin-bottom: 4px;
        }

        .about-feature-desc {
            font-size: 13px;
            color: var(--text-light);
        }

        .about-card-box {
            background: var(--gradient-primary);
            padding: 40px;
            border-radius: var(--radius-lg);
            color: #ffffff;
            box-shadow: 0 20px 40px rgba(79, 70, 229, 0.15);
        }

        .about-card-title {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 16px;
        }

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

        .about-card-list li {
            font-size: 15px;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .about-card-list li::before {
            content: "✓";
            display: inline-flex;
            justify-content: center;
            align-items: center;
            width: 20px;
            height: 20px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            font-size: 12px;
        }

        /* 全平台AIGC服务与模型聚合 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px 30px;
            transition: var(--transition);
            box-shadow: var(--card-shadow);
        }

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

        .service-icon-box {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-md);
            background: rgba(79, 70, 229, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 24px;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .service-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 标签云支持的平台 */
        .brands-wrap {
            margin-top: 50px;
            padding: 30px;
            background: var(--bg-light);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }

        .brands-title {
            text-align: center;
            font-size: 15px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .brands-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .brand-tag {
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
            transition: var(--transition);
        }

        .brand-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(79, 70, 229, 0.02);
            transform: translateY(-1px);
        }

        /* 一站式AIGC制作场景与标准化流程 */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .scenario-card {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
        }

        .scenario-card:hover {
            background: #ffffff;
            border-color: var(--primary);
            box-shadow: var(--card-shadow);
        }

        .scenario-title {
            font-size: 16px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .scenario-title::before {
            content: "•";
            color: var(--accent);
            font-size: 24px;
        }

        .scenario-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 流程步骤 & 步骤时间线 */
        .process-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-step {
            position: relative;
            background: #ffffff;
            border: 1px solid var(--border-color);
            padding: 30px 24px;
            border-radius: var(--radius-lg);
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

        .process-step:hover {
            transform: translateY(-5px);
        }

        .step-num {
            position: absolute;
            top: -20px;
            left: 24px;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--gradient-primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 16px;
            box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
        }

        .step-title {
            margin-top: 10px;
            font-size: 18px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .step-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* 行业解决方案与全国服务网络 */
        .network-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 48px;
        }

        .solution-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .solution-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 20px;
            display: flex;
            gap: 16px;
            transition: var(--transition);
        }

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

        .solution-badge {
            width: 48px;
            height: 48px;
            background: rgba(79, 70, 229, 0.05);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 800;
            flex-shrink: 0;
        }

        .solution-content h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-dark);
        }

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

        /* 价格与比价参考 (Token 比价) */
        .token-table-wrap {
            overflow-x: auto;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--card-shadow);
            background: #ffffff;
        }

        .token-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            font-size: 14px;
        }

        .token-table th {
            background: var(--bg-light);
            padding: 16px 24px;
            font-weight: 700;
            color: var(--text-dark);
            border-bottom: 1px solid var(--border-color);
        }

        .token-table td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-muted);
        }

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

        .token-table tr:hover td {
            background: rgba(79, 70, 229, 0.01);
        }

        .badge-saving {
            display: inline-block;
            padding: 2px 8px;
            background: rgba(16, 185, 129, 0.1);
            color: #10b981;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
        }

        /* 人工智能系列培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        .training-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px 16px;
            text-align: center;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

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

        .training-icon {
            font-size: 32px;
            margin-bottom: 16px;
        }

        .training-card h4 {
            font-size: 14px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .training-card p {
            font-size: 12px;
            color: var(--text-light);
        }

        /* 对比评测 - 突出 5星 & 9.9分 */
        .review-rating-box {
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            margin-bottom: 40px;
        }

        .rating-stars {
            font-size: 28px;
            color: #f59e0b;
            margin-bottom: 8px;
        }

        .rating-score {
            font-size: 64px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .rating-label {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
        }

        /* 案例与素材展示区 - 此处放置所给图片 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .case-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }

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

        .case-img-wrap {
            width: 100%;
            height: 220px;
            overflow: hidden;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

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

        .case-info {
            padding: 20px;
        }

        .case-tag {
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            margin-bottom: 8px;
            display: inline-block;
        }

        .case-title {
            font-size: 16px;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .case-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 资讯与知识库 */
        .articles-box {
            background: var(--bg-light);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-color);
            margin-top: 40px;
        }

        .article-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            list-style: none;
        }

        .article-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            transition: var(--transition);
        }

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

        .article-item a {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 700;
            font-size: 14px;
            display: block;
            margin-bottom: 6px;
        }

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

        .article-meta {
            font-size: 12px;
            color: var(--text-light);
        }

        /* 加盟代理 */
        .agent-banner {
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(244, 63, 94, 0.05) 100%);
            border: 1px dashed var(--primary);
            border-radius: var(--radius-lg);
            padding: 48px;
            text-align: center;
        }

        .agent-title {
            font-size: 24px;
            font-weight: 850;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .agent-p {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto 24px;
        }

        /* 客户评论卡片 (6条) */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .review-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 30px;
            box-shadow: var(--card-shadow);
            position: relative;
        }

        .review-quote {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .review-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--gradient-primary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 16px;
        }

        .review-meta h5 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-dark);
        }

        .review-meta span {
            font-size: 12px;
            color: var(--text-light);
        }

        /* 帮助中心与故障排查 */
        .help-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .trouble-box {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 30px;
        }

        .trouble-item {
            margin-bottom: 20px;
        }

        .trouble-item:last-child {
            margin-bottom: 0;
        }

        .trouble-title {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .trouble-desc {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* FAQ 折叠面板 (10+ 条) */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 900px;
            margin: 0 auto;
        }

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

        .faq-header {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
            background: #ffffff;
            transition: var(--transition);
        }

        .faq-header:hover {
            background: var(--bg-light);
        }

        .faq-question {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-dark);
        }

        .faq-icon {
            font-size: 18px;
            color: var(--primary);
            transition: transform 0.3s ease;
        }

        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
            background: var(--bg-light);
        }

        .faq-answer {
            padding: 20px 24px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            border-top: 1px solid var(--border-color);
        }

        .faq-item.active .faq-content {
            max-height: 1000px;
            transition: max-height 0.5s cubic-bezier(1, 0, 1, 0);
        }

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

        /* 需求表单与联系我们 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 48px;
        }

        .contact-info-panel {
            background: var(--bg-light);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-color);
        }

        .contact-detail-list {
            list-style: none;
            margin-top: 30px;
        }

        .contact-detail-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            margin-bottom: 24px;
        }

        .contact-detail-item:last-child {
            margin-bottom: 0;
        }

        .contact-detail-icon {
            width: 40px;
            height: 40px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 800;
            flex-shrink: 0;
        }

        .contact-detail-content h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 4px;
        }

        .contact-detail-content p, .contact-detail-content a {
            font-size: 13px;
            color: var(--text-muted);
            text-decoration: none;
        }

        .qr-wrap {
            margin-top: 30px;
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .qr-card {
            background: #ffffff;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            text-align: center;
            width: 140px;
        }

        .qr-card img {
            width: 100%;
            height: auto;
            border-radius: 4px;
            margin-bottom: 6px;
        }

        .qr-card span {
            font-size: 11px;
            color: var(--text-light);
            display: block;
        }

        /* 需求提交表单 */
        .form-card {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--card-shadow);
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

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

        .form-label {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-dark);
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            font-size: 14px;
            color: var(--text-dark);
            outline: none;
            transition: var(--transition);
            background: var(--bg-light);
        }

        .form-control:focus {
            border-color: var(--primary);
            background: #ffffff;
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
        }

        /* 页脚与友情链接区 */
        footer {
            background: var(--text-dark);
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.5fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-brand h3 {
            color: #ffffff;
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .footer-brand p {
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .footer-links h4 {
            color: #ffffff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-menu {
            list-style: none;
        }

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

        .footer-menu a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-menu a:hover {
            color: #ffffff;
        }

        .friend-links-box {
            border-top: 1px solid #334155;
            padding-top: 24px;
            margin-bottom: 24px;
        }

        .friend-links-title {
            color: #ffffff;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 12px;
        }

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

        .friend-links a {
            color: #64748b;
            text-decoration: none;
            font-size: 12px;
            transition: var(--transition);
        }

        .friend-links a:hover {
            color: #ffffff;
        }

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
        }

        .ai-page-home-link {
            color: #ffffff;
            text-decoration: none;
            font-weight: 600;
        }

        /* 浮动客服 */
        .float-widget {
            position: fixed;
            bottom: 40px;
            right: 40px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            color: var(--primary);
            font-size: 18px;
            font-weight: bold;
        }

        .float-btn:hover {
            background: var(--gradient-primary);
            color: #ffffff;
            transform: translateY(-3px);
        }

        /* 移动端适配 */
        @media (max-width: 1024px) {
            .stats-grid, .services-grid, .scenarios-grid, .process-flow, .reviews-grid, .cases-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-menu, .nav-actions {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .hero-title {
                font-size: 32px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                margin-top: 24px;
            }
            .about-wrap, .network-layout, .help-layout, .contact-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .services-grid, .scenarios-grid, .process-flow, .reviews-grid, .cases-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group-full {
                grid-column: span 1;
            }
            .article-list {
                grid-template-columns: 1fr;
            }
        }