/* 基础变量与重置 */
        :root {
            --bg-dark: #070714;
            --bg-card: #12122b;
            --primary: #ff007f;
            --secondary: #8a2be2;
            --accent: #00f0ff;
            --text-light: #ffffff;
            --text-gray: #a5a5c5;
            --border-glow: rgba(255, 0, 127, 0.3);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        /* 统一容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 渐变文本 */
        .gradient-text {
            background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* 按钮样式 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 30px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: var(--text-light);
            box-shadow: 0 0 15px var(--border-glow);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 25px rgba(255, 0, 127, 0.6);
        }

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

        .btn-outline:hover {
            background: rgba(255, 0, 127, 0.1);
            box-shadow: 0 0 15px rgba(255, 0, 127, 0.3);
            transform: translateY(-2px);
        }

        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(7, 7, 20, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

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

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

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

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

        .nav-link {
            color: var(--text-gray);
            text-decoration: none;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .nav-link:hover, .nav-link.active {
            color: var(--primary);
            text-shadow: 0 0 8px var(--border-glow);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-light);
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* 首屏 Hero (无图设计) */
        .hero {
            padding: 160px 0 100px;
            background: radial-gradient(circle at 50% 30%, rgba(138, 43, 226, 0.2), transparent 60%);
            text-align: center;
            position: relative;
        }

        .hero h1 {
            font-size: 3rem;
            line-height: 1.2;
            margin-bottom: 20px;
            font-weight: 800;
        }

        .hero p {
            font-size: 1.25rem;
            color: var(--text-gray);
            max-width: 800px;
            margin: 0 auto 40px;
        }

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

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 60px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 25px;
            border-radius: 16px;
            text-align: center;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: 0 10px 20px rgba(255, 0, 127, 0.1);
        }

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

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

        /* 通用区块样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

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

        .section-header h2 {
            font-size: 2.25rem;
            margin-bottom: 15px;
        }

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

        /* 关于我们与平台介绍 */
        .about-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

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

        .about-text p {
            margin-bottom: 15px;
            color: var(--text-gray);
        }

        .about-features {
            list-style: none;
            margin-top: 20px;
        }

        .about-features li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 10px;
            color: var(--text-light);
        }

        .about-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: bold;
        }

        .about-image-wrapper {
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.1);
            box-shadow: 0 0 30px rgba(138, 43, 226, 0.2);
        }

        .about-image-wrapper img {
            width: 100%;
            height: auto;
            display: block;
            object-fit: cover;
        }

        /* 服务能力与一站式制作 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 30px;
            border-radius: 16px;
            transition: var(--transition);
        }

        .service-card:hover {
            transform: translateY(-5px);
            border-color: var(--secondary);
            box-shadow: 0 10px 20px rgba(138, 43, 226, 0.15);
        }

        .service-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
            color: var(--primary);
        }

        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }

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

        /* 支持的AI平台 - 标签云 */
        .model-tags-container {
            margin-top: 40px;
            background: rgba(18, 18, 43, 0.5);
            padding: 30px;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .model-tags-title {
            text-align: center;
            margin-bottom: 20px;
            font-size: 1.1rem;
            color: var(--text-gray);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

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

        .tag {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            transition: var(--transition);
            color: var(--text-gray);
        }

        .tag:hover {
            background: var(--primary);
            color: var(--text-light);
            border-color: var(--primary);
            box-shadow: 0 0 10px var(--border-glow);
            transform: scale(1.05);
        }

        /* 行业解决方案与全国服务网络 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .solution-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 16px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }

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

        .solution-content {
            padding: 30px;
        }

        .solution-content h3 {
            margin-bottom: 12px;
            font-size: 1.4rem;
        }

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

        /* 流程与技术标准 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 40px auto 0;
            padding-left: 30px;
            border-left: 2px solid var(--secondary);
        }

        .timeline-item {
            position: relative;
            margin-bottom: 40px;
        }

        .timeline-item::before {
            content: "";
            position: absolute;
            left: -37px;
            top: 5px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 4px solid var(--bg-dark);
            box-shadow: 0 0 10px var(--primary);
        }

        .timeline-item h3 {
            font-size: 1.25rem;
            margin-bottom: 8px;
            color: var(--accent);
        }

        .timeline-item p {
            color: var(--text-gray);
            font-size: 0.95rem;
        }

        /* 对比评测表格与价格参考 */
        .comparison-table-wrapper {
            overflow-x: auto;
            background: var(--bg-card);
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 30px;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 700px;
        }

        th, td {
            padding: 18px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        th {
            background-color: rgba(255, 255, 255, 0.02);
            color: var(--text-light);
            font-weight: 600;
        }

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

        .highlight-row {
            background: rgba(255, 0, 127, 0.05);
        }

        .badge-star {
            color: #ffb700;
            font-weight: bold;
        }

        /* 培训板块 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
            margin-top: 30px;
        }

        .training-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px;
            border-radius: 12px;
            text-align: center;
            transition: var(--transition);
        }

        .training-card:hover {
            border-color: var(--accent);
            transform: translateY(-3px);
        }

        .training-card h4 {
            font-size: 1rem;
            margin-bottom: 10px;
            color: var(--text-light);
        }

        .training-card p {
            font-size: 0.8rem;
            color: var(--text-gray);
        }

        /* 案例展示 */
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .case-card {
            background: var(--bg-card);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: var(--transition);
        }

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

        .case-img-box {
            position: relative;
            aspect-ratio: 16/10;
            overflow: hidden;
            background: #181838;
        }

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

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

        .case-info {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            padding: 3px 10px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent);
            border-radius: 4px;
            font-size: 0.75rem;
            margin-bottom: 10px;
        }

        .case-info h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        .case-info p {
            color: var(--text-gray);
            font-size: 0.85rem;
        }

        /* 客户评论卡片 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .review-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 25px;
            border-radius: 16px;
            position: relative;
        }

        .review-quote {
            font-size: 1.5rem;
            color: var(--primary);
            opacity: 0.3;
            position: absolute;
            top: 15px;
            left: 15px;
        }

        .review-text {
            color: var(--text-gray);
            font-size: 0.9rem;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

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

        .review-avatar {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 0.9rem;
        }

        .review-meta h4 {
            font-size: 0.9rem;
            margin-bottom: 2px;
        }

        .review-meta p {
            font-size: 0.75rem;
            color: var(--accent);
        }

        /* 常见用户问题 FAQ & 诊断 */
        .faq-wrapper {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-question {
            padding: 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            user-select: none;
        }

        .faq-question::after {
            content: "+";
            font-size: 1.2rem;
            color: var(--accent);
            transition: var(--transition);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
            background: rgba(255, 255, 255, 0.01);
        }

        .faq-answer-inner {
            padding: 0 20px 20px;
            color: var(--text-gray);
            font-size: 0.95rem;
        }

        /* 自助排查工具 & 术语百科 */
        .diag-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 40px;
        }

        .diag-box {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 30px;
            border-radius: 16px;
        }

        .diag-box h3 {
            margin-bottom: 20px;
            color: var(--accent);
        }

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

        .diag-list li {
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .diag-list li:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }

        .diag-list strong {
            color: var(--text-light);
            display: block;
            margin-bottom: 4px;
        }

        .diag-list span {
            font-size: 0.85rem;
            color: var(--text-gray);
        }

        /* 资讯文章列表 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .article-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 12px;
            padding: 20px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
        }

        .article-card:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .article-card h3 {
            font-size: 1.05rem;
            margin-bottom: 12px;
            line-height: 1.4;
        }

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

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

        .article-meta {
            display: flex;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-gray);
            margin-top: 15px;
        }

        /* 智能需求匹配与加盟表单 */
        .contact-section {
            background: radial-gradient(circle at 80% 80%, rgba(255, 0, 127, 0.1), transparent 50%);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 40px;
        }

        .form-box {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 0.9rem;
            color: var(--text-gray);
        }

        .form-control {
            width: 100%;
            background: rgba(7, 7, 20, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 12px 16px;
            color: var(--text-light);
            font-size: 1rem;
            transition: var(--transition);
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 10px var(--border-glow);
        }

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

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

        .info-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 25px;
            border-radius: 16px;
            margin-bottom: 20px;
        }

        .info-card h4 {
            color: var(--accent);
            margin-bottom: 12px;
            font-size: 1.1rem;
        }

        .info-card p {
            font-size: 0.95rem;
            color: var(--text-gray);
            margin-bottom: 8px;
        }

        .kefu-qr-wrapper {
            margin-top: 15px;
            text-align: center;
            background: #fff;
            padding: 10px;
            border-radius: 8px;
            display: inline-block;
        }

        .kefu-qr-wrapper img {
            width: 130px;
            height: 130px;
            display: block;
        }

        /* 友情链接与底部 */
        footer {
            background: #04040c;
            padding: 60px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

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

        .footer-brand p {
            color: var(--text-gray);
            margin-top: 15px;
            font-size: 0.9rem;
            max-width: 320px;
        }

        .footer-links h4 {
            margin-bottom: 15px;
            font-size: 1rem;
            color: var(--accent);
        }

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

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

        .footer-links a {
            color: var(--text-gray);
            text-decoration: none;
            transition: var(--transition);
            font-size: 0.9rem;
        }

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

        .friend-links-box {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 25px;
            margin-bottom: 25px;
        }

        .friend-links-box h5 {
            color: var(--text-gray);
            margin-bottom: 10px;
            font-size: 0.85rem;
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }

        .friend-links a {
            color: var(--text-gray);
            text-decoration: none;
            font-size: 0.8rem;
            transition: var(--transition);
        }

        .friend-links a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-gray);
        }

        /* 浮动客服 */
        .float-widget {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .widget-btn {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(0,0,0,0.3);
            transition: var(--transition);
            position: relative;
        }

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

        .widget-btn svg {
            width: 24px;
            height: 24px;
            fill: currentColor;
        }

        .qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            background: var(--bg-card);
            border: 1px solid rgba(255,255,255,0.1);
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.5);
            display: none;
            text-align: center;
            width: 160px;
        }

        .qr-popover img {
            width: 130px;
            height: 130px;
            background: #fff;
            padding: 5px;
            border-radius: 4px;
        }

        .qr-popover p {
            font-size: 0.75rem;
            color: var(--text-light);
            margin-top: 8px;
        }

        .widget-btn:hover .qr-popover {
            display: block;
        }

        /* 响应式适配 */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .services-grid, .reviews-grid, .articles-grid, .cases-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .training-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--bg-dark);
                padding: 20px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }
            .nav-menu.active {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .about-wrapper, .solutions-grid, .diag-grid, .contact-grid {
                grid-template-columns: 1fr;
            }
            .services-grid, .reviews-grid, .articles-grid, .cases-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }