/* 炫彩荧光风 - 浅色基底 */
        :root {
            --primary: #00ff88;
            --primary-dark: #00b35f;
            --secondary: #8a2be2;
            --accent: #ff007f;
            --bg-main: #f8fafc;
            --bg-card: #ffffff;
            --text-main: #0f172a;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --neon-shadow: 0 0 15px rgba(0, 255, 136, 0.2);
            --neon-purple-shadow: 0 0 15px rgba(138, 43, 226, 0.15);
            --max-width: 1200px;
        }

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

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

        /* 炫彩渐变背景装饰线/块 */
        .gradient-bar {
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
            width: 100%;
        }

        /* 按钮样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            cursor: pointer;
            border: none;
        }

        .btn-neon {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #ffffff;
            box-shadow: var(--neon-shadow);
            text-shadow: 0 1px 2px rgba(0,0,0,0.2);
        }

        .btn-neon:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 25px rgba(0, 255, 136, 0.4), 0 0 25px rgba(138, 43, 226, 0.4);
        }

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

        .btn-outline:hover {
            background: var(--secondary);
            color: #ffffff;
            box-shadow: var(--neon-purple-shadow);
            transform: translateY(-2px);
        }

        /* 导航栏 */
        header {
            background-color: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            position: sticky;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.02);
        }

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

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

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

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

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

        .nav-menu a:hover {
            color: var(--secondary);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 5px;
        }

        .nav-toggle span {
            display: block;
            width: 25px;
            height: 3px;
            background-color: var(--text-main);
            margin: 5px 0;
            transition: 0.3s;
        }

        /* Hero首屏 - 严禁出现任何图片 */
        .hero {
            position: relative;
            padding: 100px 0 80px;
            background: radial-gradient(circle at 10% 20%, rgba(0, 255, 136, 0.08) 0%, rgba(138, 43, 226, 0.05) 90%), var(--bg-main);
            overflow: hidden;
            text-align: center;
        }

        .hero::before {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(0,255,136,0.15) 0%, transparent 70%);
            top: -100px;
            left: -100px;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(138,43,226,0.1) 0%, transparent 70%);
            bottom: -200px;
            right: -100px;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 10;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #0f172a, #8a2be2, #ff007f);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

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

        /* 核心卖点 / 数据指标 */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 30px;
        }

        .metric-card {
            background-color: var(--bg-card);
            padding: 25px 20px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity 0.3s;
        }

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

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

        .metric-num {
            font-size: 2rem;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 5px;
        }

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

        /* Section 通用结构 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

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

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-main);
            display: inline-block;
            position: relative;
            margin-bottom: 15px;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 2px;
        }

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

        /* 关于我们 */
        .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(--secondary);
        }

        .about-text p {
            color: var(--text-muted);
            margin-bottom: 20px;
            font-size: 16px;
        }

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

        .about-feat-item {
            background-color: var(--bg-card);
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

        .about-feat-item h4 {
            margin-bottom: 8px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .about-feat-item h4 svg {
            color: var(--primary-dark);
        }

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

        .service-card {
            background-color: var(--bg-card);
            border-radius: 16px;
            padding: 30px;
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }

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

        .service-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(0, 255, 136, 0.1), rgba(138, 43, 226, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 15px;
        }

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

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

        .step-card {
            background-color: var(--bg-card);
            padding: 30px 20px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            text-align: center;
            position: relative;
        }

        .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--secondary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-weight: 700;
        }

        /* 解决方案 (七大场景) */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .solution-card {
            background-color: var(--bg-card);
            border-radius: 16px;
            padding: 24px;
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }

        .solution-card:hover {
            box-shadow: var(--neon-purple-shadow);
            border-color: var(--secondary);
        }

        .solution-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 4px;
            background-color: rgba(138, 43, 226, 0.1);
            color: var(--secondary);
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 15px;
        }

        /* 服务网络 / 地图分布 */
        .network-section {
            background-color: #f1f5f9;
        }

        .network-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }

        .network-text {
            flex: 1;
        }

        .network-map {
            flex: 1;
            background: var(--bg-card);
            border-radius: 16px;
            padding: 30px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
        }

        .node-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }

        .node-item {
            background: var(--bg-main);
            padding: 12px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            border-left: 3px solid var(--primary);
        }

        /* 技术标准 */
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .tech-card {
            background: var(--bg-card);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

        /* 案例中心 - 素材图展示 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .case-card {
            background: var(--bg-card);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .case-img-container {
            width: 100%;
            height: 250px;
            overflow: hidden;
            background-color: #eaeaea;
        }

        .case-img-container img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }

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

        .case-info {
            padding: 25px;
        }

        .case-info h4 {
            font-size: 18px;
            margin-bottom: 10px;
        }

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

        /* 对比评测 */
        .comparison-table-wrap {
            overflow-x: auto;
            background: var(--bg-card);
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
        }

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

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

        th {
            background-color: #f8fafc;
            font-weight: 700;
        }

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

        .highlight-col {
            background-color: rgba(0, 255, 136, 0.05);
            font-weight: 600;
        }

        /* 评测分数卡片 */
        .rating-card {
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            color: #ffffff;
            padding: 30px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
        }

        .rating-info h4 {
            font-size: 24px;
            margin-bottom: 5px;
        }

        .rating-stars {
            color: #ffb800;
            font-size: 20px;
        }

        .rating-num {
            font-size: 3rem;
            font-weight: 800;
        }

        /* 需求匹配表单 */
        .form-section {
            background: radial-gradient(circle at top right, rgba(138,43,226,0.05), transparent);
        }

        .form-container {
            max-width: 700px;
            margin: 0 auto;
            background: var(--bg-card);
            padding: 40px;
            border-radius: 24px;
            border: 1px solid var(--border-color);
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            background-color: var(--bg-main);
            color: var(--text-main);
            font-size: 15px;
            transition: all 0.3s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--secondary);
            box-shadow: var(--neon-purple-shadow);
        }

        /* Token 比价 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .token-card {
            background: var(--bg-card);
            border-radius: 12px;
            padding: 20px;
            border: 1px solid var(--border-color);
            text-align: center;
        }

        .token-price {
            font-size: 24px;
            font-weight: 700;
            color: var(--accent);
            margin: 10px 0;
        }

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

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

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

        .train-title {
            font-weight: 700;
            font-size: 14px;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .train-badge {
            background-color: #f1f5f9;
            color: var(--text-muted);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 11px;
        }

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

        .faq-item {
            background: var(--bg-card);
            border-radius: 12px;
            border: 1px solid var(--border-color);
            margin-bottom: 15px;
            overflow: hidden;
        }

        .faq-question {
            padding: 20px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.3s;
        }

        .faq-question:hover {
            background-color: #fafbfc;
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease-out;
            color: var(--text-muted);
            font-size: 14px;
            border-top: 0 solid var(--border-color);
        }

        .faq-item.active .faq-answer {
            padding: 20px;
            max-height: 200px;
            border-top: 1px solid var(--border-color);
        }

        .faq-icon {
            transition: transform 0.3s;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        /* 常见问题自助排查 */
        .troubleshoot-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .troubleshoot-card {
            background: var(--bg-card);
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }

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

        /* 网站术语百科 */
        .term-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }

        .term-tag {
            background: var(--bg-card);
            padding: 8px 16px;
            border-radius: 30px;
            border: 1px solid var(--border-color);
            font-size: 14px;
            cursor: pointer;
            transition: all 0.3s;
        }

        .term-tag:hover {
            background: var(--primary);
            color: #111;
            border-color: var(--primary);
            box-shadow: var(--neon-shadow);
        }

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

        .comment-card {
            background: var(--bg-card);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 10px rgba(0,0,0,0.01);
            position: relative;
        }

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

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

        .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--secondary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
        }

        .author-info h5 {
            font-size: 14px;
            color: var(--text-main);
        }

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

        /* 行业资讯 / 知识库 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

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

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

        .article-info {
            padding: 20px;
        }

        .article-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-main);
            text-decoration: none;
            display: block;
        }

        .article-title:hover {
            color: var(--secondary);
        }

        /* 悬浮组件 */
        .floating-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background: #ffffff;
            border: 2px solid var(--primary);
            border-radius: 16px;
            padding: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.15);
            width: 140px;
            text-align: center;
            font-size: 12px;
        }

        .floating-kefu img {
            width: 100px;
            height: 100px;
            margin-bottom: 8px;
            border-radius: 8px;
        }

        .back-to-top {
            position: fixed;
            bottom: 200px;
            right: 30px;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--secondary);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: var(--neon-purple-shadow);
            border: none;
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s;
        }

        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }

        /* 页脚 */
        footer {
            background-color: #0f172a;
            color: #94a3b8;
            padding: 60px 0 20px;
            font-size: 14px;
        }

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

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

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

        .footer-col h5 {
            color: #ffffff;
            font-size: 16px;
            margin-bottom: 20px;
        }

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

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

        .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .footer-contact p {
            margin-bottom: 10px;
        }

        .friend-links {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            margin-bottom: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            align-items: center;
        }

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

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

        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .metrics-grid, .service-grid, .solutions-grid, .tech-grid, .comments-grid, .articles-grid, .troubleshoot-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .train-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2rem;
            }
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: #ffffff;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 15px rgba(0,0,0,0.05);
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .about-grid, .network-content, .case-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid, .service-grid, .solutions-grid, .tech-grid, .comments-grid, .articles-grid, .train-grid, .token-grid, .troubleshoot-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .floating-kefu {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }