:root {
            --primary: #3b82f6;
            --primary-grad: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
            --secondary: #10b981;
            --dark: #0f172a;
            --light: #f8fafc;
            --border: #e2e8f0;
            --text-main: #334155;
            --max-width: 1200px;
        }

        * {
            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: #ffffff;
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 统一容器 */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: all 0.3s ease;
        }

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

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

        .logo-area img {
            height: 40px;
            width: auto;
        }

        .nav-links {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--text-main);
            font-weight: 500;
            font-size: 14px;
            transition: color 0.3s;
        }

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

        .nav-links .cta-btn {
            background: var(--primary-grad);
            color: white;
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 14px;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .nav-links .cta-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
            color: white;
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            border: none;
            background: transparent;
        }

        .menu-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--dark);
            border-radius: 2px;
            transition: 0.3s;
        }

        /* Hero首屏 - 严禁包含图片 */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.08) 0%, rgba(139, 92, 246, 0.05) 50%, rgba(255, 255, 255, 0) 100%);
            text-align: center;
            position: relative;
        }

        .hero-tag {
            display: inline-block;
            background: rgba(59, 130, 246, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 14px;
            margin-bottom: 24px;
            animation: fadeInDown 0.8s;
        }

        .hero h1 {
            font-size: 42px;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 24px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }

        .hero p {
            font-size: 18px;
            color: #64748b;
            max-width: 750px;
            margin: 0 auto 36px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 48px;
        }

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: var(--primary-grad);
            color: white;
            box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
        }

        .btn-secondary {
            background: #ffffff;
            color: var(--dark);
            border: 1px solid var(--border);
        }

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

        /* 标签流云效果 */
        .model-tags {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .model-tag {
            background: #ffffff;
            border: 1px solid var(--border);
            padding: 6px 12px;
            border-radius: 6px;
            font-size: 12px;
            color: var(--text-main);
            box-shadow: 0 2px 4px rgba(0,0,0,0.02);
            transition: transform 0.2s, border-color 0.2s;
        }

        .model-tag:hover {
            border-color: var(--primary);
            transform: translateY(-1px);
        }

        /* 分区通用样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border);
        }

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

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

        .section-title h2 {
            font-size: 32px;
            color: var(--dark);
            font-weight: 700;
            margin-bottom: 12px;
        }

        .section-title p {
            color: #64748b;
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: white;
            border: 1px solid var(--border);
            padding: 30px 20px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
            transition: transform 0.3s;
        }

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

        .stat-val {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
            background: var(--primary-grad);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-label {
            font-size: 14px;
            color: #64748b;
            font-weight: 500;
        }

        /* 全平台AIGC服务体系 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .service-card {
            background: white;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
            transition: all 0.3s;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        }

        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 8px;
            background: rgba(59, 130, 246, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 20px;
        }

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

        .service-card p {
            font-size: 14px;
            color: #64748b;
            margin-bottom: 16px;
        }

        .service-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .service-tags span {
            background: var(--light);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 11px;
            color: #64748b;
        }

        /* 流程步骤 */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .flow-step {
            background: white;
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: 10px;
            position: relative;
            z-index: 2;
        }

        .step-num {
            font-size: 28px;
            font-weight: 800;
            color: rgba(59, 130, 246, 0.2);
            margin-bottom: 12px;
        }

        .flow-step h3 {
            font-size: 18px;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .flow-step p {
            font-size: 13px;
            color: #64748b;
        }

        /* 行业解决方案 */
        .solution-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .solution-item {
            background: white;
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: 12px;
        }

        .solution-item h3 {
            font-size: 18px;
            color: var(--dark);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .solution-item h3::before {
            content: "✓";
            color: var(--secondary);
            font-weight: bold;
        }

        .solution-item p {
            font-size: 14px;
            color: #64748b;
        }

        /* 全国网络与标准化服务流程 */
        .split-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .info-block {
            background: white;
            border: 1px solid var(--border);
            padding: 30px;
            border-radius: 12px;
        }

        .info-block h3 {
            font-size: 20px;
            color: var(--dark);
            margin-bottom: 20px;
            border-left: 4px solid var(--primary);
            padding-left: 12px;
        }

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

        .info-list li {
            margin-bottom: 15px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
        }

        .info-list li strong {
            color: var(--dark);
            min-width: 100px;
            display: inline-block;
        }

        /* 技术指标 */
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .tech-card {
            background: #ffffff;
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: 8px;
            text-align: center;
        }

        .tech-card .icon {
            font-size: 24px;
            margin-bottom: 12px;
        }

        .tech-card h4 {
            color: var(--dark);
            margin-bottom: 8px;
        }

        .tech-card p {
            font-size: 13px;
            color: #64748b;
        }

        /* 案例中心 - 图片展示区域 */
        .case-gallery {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }

        .case-card {
            background: white;
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0,0,0,0.02);
            transition: all 0.3s;
        }

        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 15px rgba(0,0,0,0.05);
        }

        .case-img-wrap {
            position: relative;
            background: #f1f5f9;
            aspect-ratio: 16/9;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .case-info {
            padding: 20px;
        }

        .case-info h3 {
            font-size: 16px;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .case-info p {
            font-size: 13px;
            color: #64748b;
        }

        /* 素材图独立排版 */
        .material-showcase {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 20px;
        }

        .material-box {
            background: white;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 20px;
        }

        .material-box h4 {
            margin-bottom: 12px;
            font-size: 16px;
            color: var(--dark);
        }

        .material-container {
            display: flex;
            gap: 15px;
        }

        .material-container img {
            border-radius: 8px;
            object-fit: cover;
            width: 100%;
            max-height: 200px;
        }

        /* 对比评测 & Token比价 */
        .comparison-table-wrapper {
            overflow-x: auto;
            border: 1px solid var(--border);
            border-radius: 12px;
            background: white;
            margin-bottom: 40px;
        }

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

        th, td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border);
        }

        th {
            background-color: var(--light);
            color: var(--dark);
            font-weight: 600;
        }

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

        .highlight-row {
            background: rgba(59, 130, 246, 0.02);
        }

        .rating-box {
            display: flex;
            align-items: center;
            gap: 15px;
            background: white;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 24px;
            margin-top: 20px;
        }

        .rating-score {
            font-size: 48px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
        }

        .rating-stars {
            color: #fbbf24;
            font-size: 20px;
        }

        /* 职业技术培训 & 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

        .training-card {
            background: white;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 20px 15px;
            text-align: center;
            box-shadow: 0 2px 4px rgba(0,0,0,0.01);
            transition: border-color 0.2s;
        }

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

        .training-card h4 {
            font-size: 14px;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .training-card p {
            font-size: 11px;
            color: #64748b;
        }

        /* 帮助中心 & 自助排查 & 百科 */
        .help-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .help-box {
            background: white;
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: 12px;
        }

        .help-box h3 {
            font-size: 18px;
            color: var(--dark);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--light);
        }

        .help-links {
            list-style: none;
        }

        .help-links li {
            margin-bottom: 10px;
            font-size: 13px;
        }

        .help-links a {
            color: var(--text-main);
            text-decoration: none;
            transition: color 0.2s;
        }

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

        /* 行业资讯 / 知识库 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .news-card {
            background: white;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 24px;
            transition: transform 0.3s;
        }

        .news-card:hover {
            transform: translateY(-3px);
        }

        .news-card h3 {
            font-size: 16px;
            color: var(--dark);
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .news-card p {
            font-size: 13px;
            color: #64748b;
            margin-bottom: 16px;
        }

        .news-link {
            font-size: 13px;
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
        }

        /* 客户评论 */
        .comments-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .comment-card {
            background: white;
            border: 1px solid var(--border);
            padding: 24px;
            border-radius: 12px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.01);
        }

        .comment-text {
            font-size: 14px;
            color: var(--text-main);
            margin-bottom: 16px;
            font-style: italic;
        }

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

        .author-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: #e2e8f0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: var(--primary);
            font-size: 12px;
        }

        .author-info h4 {
            font-size: 13px;
            color: var(--dark);
        }

        .author-info p {
            font-size: 11px;
            color: #64748b;
        }

        /* 智能需求匹配与联系我们 (表单) */
        .contact-section {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
        }

        .form-container {
            background: white;
            border: 1px solid var(--border);
            padding: 40px;
            border-radius: 16px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.02);
        }

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

        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .form-control {
            width: 100%;
            padding: 10px 14px;
            border: 1px solid var(--border);
            border-radius: 6px;
            font-size: 14px;
            transition: border-color 0.2s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

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

        .contact-details {
            background: var(--light);
            border: 1px solid var(--border);
            padding: 30px;
            border-radius: 12px;
        }

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

        .contact-item {
            margin-bottom: 16px;
            font-size: 14px;
        }

        .contact-item strong {
            color: var(--dark);
        }

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 20px;
        }

        .qr-item {
            text-align: center;
            font-size: 12px;
            color: #64748b;
        }

        .qr-item img {
            width: 100px;
            height: 100px;
            border: 1px solid var(--border);
            border-radius: 6px;
            margin-bottom: 8px;
        }

        /* FAQ 折叠面板 */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: white;
            border: 1px solid var(--border);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-header {
            padding: 16px 20px;
            background: white;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }

        .faq-header h3 {
            font-size: 15px;
            color: var(--dark);
            font-weight: 600;
        }

        .faq-icon {
            font-size: 18px;
            transition: transform 0.2s;
        }

        .faq-content {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.2s ease-out, padding 0.2s ease-out;
            background: var(--light);
            font-size: 14px;
            color: var(--text-main);
        }

        .faq-item.active .faq-content {
            padding: 16px 20px;
        }

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

        /* 软件/平台详细介绍板块 */
        .software-intro {
            background: #ffffff;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 40px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .software-intro-content h3 {
            font-size: 24px;
            color: var(--dark);
            margin-bottom: 16px;
        }

        .software-intro-content p {
            font-size: 14px;
            color: #64748b;
            margin-bottom: 20px;
        }

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

        .software-features li {
            margin-bottom: 12px;
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .software-features li::before {
            content: "✦";
            color: var(--primary);
            font-weight: bold;
        }

        .software-stats {
            background: var(--light);
            border: 1px solid var(--border);
            padding: 30px;
            border-radius: 10px;
        }

        .software-stats-item {
            margin-bottom: 15px;
        }

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

        .software-stats-label {
            font-size: 12px;
            color: #64748b;
            margin-bottom: 4px;
        }

        .software-stats-bar {
            height: 6px;
            background: var(--border);
            border-radius: 3px;
            overflow: hidden;
        }

        .software-stats-fill {
            height: 100%;
            background: var(--primary-grad);
            border-radius: 3px;
        }

        /* 友情链接与页脚 */
        footer {
            background-color: var(--dark);
            color: #94a3b8;
            padding: 60px 0 30px;
            font-size: 13px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
            padding-bottom: 30px;
            border-bottom: 1px solid #1e293b;
        }

        .footer-brand h4 {
            color: white;
            font-size: 16px;
            margin-bottom: 15px;
        }

        .footer-links h5 {
            color: white;
            font-size: 14px;
            margin-bottom: 15px;
        }

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

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

        .footer-links ul li a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.2s;
        }

        .footer-links ul li a:hover {
            color: white;
        }

        .friend-links {
            margin-bottom: 30px;
        }

        .friend-links h5 {
            color: white;
            margin-bottom: 10px;
        }

        .friend-links a {
            color: #94a3b8;
            text-decoration: none;
            margin-right: 15px;
            display: inline-block;
            transition: color 0.2s;
        }

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

        .copyright {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        /* 侧边悬浮工具 */
        .sticky-bar {
            position: fixed;
            right: 20px;
            bottom: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            z-index: 999;
        }

        .sticky-btn {
            background: white;
            border: 1px solid var(--border);
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
            transition: all 0.3s;
            position: relative;
        }

        .sticky-btn:hover {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
        }

        .sticky-btn .tooltip {
            position: absolute;
            right: 60px;
            background: white;
            color: var(--dark);
            padding: 8px 12px;
            border-radius: 6px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            font-size: 12px;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s;
            border: 1px solid var(--border);
        }

        .sticky-btn:hover .tooltip {
            opacity: 1;
        }

        /* 移动端响应式适配 */
        @media (max-width: 1024px) {
            .stats-grid, .service-grid, .flow-steps, .solution-list, .case-gallery, .help-grid, .news-grid, .comments-grid, .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .material-showcase, .split-grid, .software-intro, .contact-section {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: white;
                border-bottom: 1px solid var(--border);
                padding: 20px;
                gap: 15px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-links.active {
                display: flex;
            }
            .stats-grid, .service-grid, .flow-steps, .solution-list, .case-gallery, .help-grid, .news-grid, .comments-grid, .training-grid {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 28px;
            }
            .form-row {
                grid-template-columns: 1fr;
            }
        }