:root {
            --bg-dark: #070913;
            --bg-card: #0f132a;
            --neon-blue: #00f0ff;
            --neon-pink: #ff007f;
            --neon-purple: #9d4edd;
            --text-light: #f8fafc;
            --text-gray: #94a3b8;
            --border-neon: rgba(0, 240, 255, 0.2);
            --transition: all 0.3s ease;
        }

        * {
            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;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(7, 9, 19, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-neon);
            z-index: 1000;
        }

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

        .logo-box {
            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-gray);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
        }

        .nav-menu a:hover {
            color: var(--neon-blue);
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 5px;
        }

        .nav-toggle span {
            width: 25px;
            height: 3px;
            background-color: var(--text-light);
            transition: var(--transition);
        }

        /* Hero首屏 - 严禁出现图片 */
        .hero-section {
            padding: 160px 0 100px 0;
            background: radial-gradient(circle at 50% 30%, rgba(157, 78, 221, 0.15), transparent 60%);
            text-align: center;
            position: relative;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--neon-blue);
            color: var(--neon-blue);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.2);
        }

        .hero-title {
            font-size: clamp(28px, 5vw, 48px);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 30%, var(--neon-blue) 70%, var(--neon-pink) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-shadow: 0 0 30px rgba(0, 240, 255, 0.1);
        }

        .hero-subtitle {
            font-size: clamp(16px, 2.5vw, 20px);
            color: var(--text-gray);
            max-width: 800px;
            margin: 0 auto 40px auto;
        }

        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 60px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 32px;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
            color: #000;
            font-weight: 700;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
        }

        .btn-secondary {
            border: 1px solid var(--neon-pink);
            color: var(--text-light);
            background: transparent;
        }

        .btn-secondary:hover {
            background: rgba(255, 0, 127, 0.1);
            box-shadow: 0 0 20px rgba(255, 0, 127, 0.4);
            transform: translateY(-2px);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-neon);
            border-radius: 12px;
            padding: 24px;
            transition: var(--transition);
        }

        .stat-card:hover {
            border-color: var(--neon-blue);
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 240, 255, 0.1);
        }

        .stat-value {
            font-size: 36px;
            font-weight: 700;
            color: var(--neon-blue);
            margin-bottom: 8px;
        }

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

        /* 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-title {
            font-size: clamp(24px, 4vw, 36px);
            font-weight: 700;
            margin-bottom: 15px;
            background: linear-gradient(90deg, #fff, var(--neon-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

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

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

        .about-content h3 {
            font-size: 24px;
            color: var(--neon-pink);
            margin-bottom: 20px;
        }

        .about-content p {
            color: var(--text-gray);
            margin-bottom: 20px;
        }

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

        .features-list li {
            position: relative;
            padding-left: 25px;
            margin-bottom: 12px;
            color: var(--text-light);
        }

        .features-list li::before {
            content: "✦";
            position: absolute;
            left: 0;
            color: var(--neon-blue);
        }

        /* AIGC服务体系 & 场景 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-neon);
            border-radius: 12px;
            padding: 30px;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }

        .service-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(to bottom, var(--neon-blue), var(--neon-purple));
        }

        .service-card:hover {
            transform: translateY(-5px);
            border-color: var(--neon-pink);
            box-shadow: 0 10px 25px rgba(255, 0, 127, 0.15);
        }

        .service-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
            color: #fff;
        }

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

        /* 支持平台滚动标识 */
        .brand-scroller {
            margin-top: 40px;
            overflow: hidden;
            position: relative;
            padding: 20px 0;
            background: rgba(255, 255, 255, 0.02);
            border-radius: 8px;
        }

        .brand-track {
            display: flex;
            width: max-content;
            animation: scroll 30s linear infinite;
        }

        .brand-item {
            padding: 8px 20px;
            margin-right: 15px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            font-size: 12px;
            color: var(--text-gray);
            white-space: nowrap;
        }

        @keyframes scroll {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        /* 制作流程 & 时间线 */
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .timeline::before {
            content: "";
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 2px;
            background: var(--border-neon);
            transform: translateX(-50%);
        }

        .timeline-item {
            margin-bottom: 40px;
            position: relative;
            width: 50%;
            padding: 0 30px;
        }

        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }

        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }

        .timeline-dot {
            position: absolute;
            top: 5px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--neon-blue);
            box-shadow: 0 0 10px var(--neon-blue);
            z-index: 2;
        }

        .timeline-item:nth-child(odd) .timeline-dot {
            right: -8px;
        }

        .timeline-item:nth-child(even) .timeline-dot {
            left: -8px;
        }

        .timeline-content {
            background: var(--bg-card);
            border: 1px solid var(--border-neon);
            padding: 20px;
            border-radius: 8px;
        }

        .timeline-content h4 {
            color: var(--neon-blue);
            margin-bottom: 8px;
        }

        /* 对比评测表格 */
        .table-responsive {
            overflow-x: auto;
            margin-top: 30px;
        }

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

        .comparison-table th, .comparison-table td {
            padding: 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .comparison-table th {
            background-color: rgba(255, 255, 255, 0.02);
            color: var(--neon-blue);
        }

        .comparison-table tr:hover {
            background-color: rgba(255, 255, 255, 0.01);
        }

        .text-neon-pink {
            color: var(--neon-pink);
            font-weight: bold;
        }

        .rating-box {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-top: 30px;
            background: rgba(255, 0, 127, 0.05);
            border: 1px dashed var(--neon-pink);
            padding: 20px;
            border-radius: 8px;
            justify-content: center;
        }

        .rating-value {
            font-size: 32px;
            font-weight: 800;
            color: var(--neon-pink);
        }

        /* 案例展示区 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-neon);
            border-radius: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .case-card:hover {
            transform: translateY(-5px);
            border-color: var(--neon-blue);
            box-shadow: 0 10px 20px rgba(0, 240, 255, 0.15);
        }

        .case-img-container {
            width: 100%;
            height: 200px;
            overflow: hidden;
            background: #1e293b;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

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

        .case-info {
            padding: 20px;
        }

        .case-tag {
            display: inline-block;
            padding: 4px 10px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--neon-blue);
            font-size: 12px;
            border-radius: 4px;
            margin-bottom: 10px;
        }

        .case-title {
            font-size: 18px;
            margin-bottom: 10px;
            color: #fff;
        }

        .case-desc {
            font-size: 14px;
            color: var(--text-gray);
        }

        /* Token比价 */
        .price-tag-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }

        .price-card {
            background: var(--bg-card);
            border: 1px solid var(--border-neon);
            border-radius: 8px;
            padding: 20px;
            text-align: center;
            transition: var(--transition);
        }

        .price-card:hover {
            border-color: var(--neon-pink);
            box-shadow: 0 0 15px rgba(255, 0, 127, 0.2);
        }

        .price-model {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .price-number {
            font-size: 24px;
            color: var(--neon-pink);
            font-weight: 800;
            margin-bottom: 5px;
        }

        .price-unit {
            font-size: 12px;
            color: var(--text-gray);
        }

        /* 培训板块 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .training-card {
            background: linear-gradient(135deg, rgba(15, 19, 42, 0.8), rgba(7, 9, 19, 0.8));
            border: 1px solid var(--border-neon);
            border-radius: 8px;
            padding: 24px;
            text-align: center;
            position: relative;
        }

        .training-card::after {
            content: "工信部系列";
            position: absolute;
            top: 10px;
            right: 10px;
            font-size: 10px;
            color: var(--neon-blue);
            background: rgba(0, 240, 255, 0.1);
            padding: 2px 6px;
            border-radius: 4px;
        }

        .training-name {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }

        .training-desc {
            font-size: 12px;
            color: var(--text-gray);
        }

        /* 智能匹配与联系我们表单 */
        .contact-section {
            background: linear-gradient(180deg, var(--bg-dark), #0d0f20);
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .contact-info-panel h3 {
            font-size: 24px;
            color: var(--neon-blue);
            margin-bottom: 20px;
        }

        .contact-item {
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .contact-icon {
            font-size: 20px;
            color: var(--neon-pink);
        }

        .contact-text a {
            color: var(--text-light);
            text-decoration: none;
        }

        .form-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-neon);
            padding: 30px;
            border-radius: 12px;
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 14px;
            color: var(--text-gray);
        }

        .form-control {
            width: 100%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-neon);
            border-radius: 6px;
            padding: 10px 15px;
            color: var(--text-light);
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--neon-blue);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
        }

        /* 客户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }

        .review-card {
            background: var(--bg-card);
            border: 1px solid var(--border-neon);
            border-radius: 8px;
            padding: 24px;
            position: relative;
        }

        .review-text {
            font-size: 14px;
            color: var(--text-gray);
            margin-bottom: 15px;
            font-style: italic;
        }

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

        .author-name {
            font-weight: 700;
            color: var(--neon-blue);
            font-size: 14px;
        }

        .author-role {
            font-size: 12px;
            color: var(--neon-pink);
        }

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

        .faq-item {
            border-bottom: 1px solid var(--border-neon);
            padding: 15px 0;
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            padding: 10px 0;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--neon-blue);
        }

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

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding-top: 10px;
        }

        .faq-icon::after {
            content: "+";
            font-size: 20px;
        }

        .faq-item.active .faq-icon::after {
            content: "-";
        }

        /* 术语百科与排查 */
        .glossary-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .glossary-card {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px;
            border-radius: 8px;
        }

        .glossary-term {
            font-weight: 700;
            color: var(--neon-blue);
            margin-bottom: 8px;
        }

        .glossary-def {
            font-size: 13px;
            color: var(--text-gray);
        }

        /* 资讯文章列表 */
        .articles-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
        }

        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-neon);
            border-radius: 8px;
            padding: 20px;
            transition: var(--transition);
        }

        .article-card:hover {
            border-color: var(--neon-blue);
        }

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

        .article-title-link:hover {
            color: var(--neon-blue);
        }

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

        /* 悬浮客服 */
        .floating-service {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .float-btn {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
            color: #000;
            display: flex;
            justify-content: center;
            align-items: center;
            text-decoration: none;
            font-size: 20px;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
            cursor: pointer;
            transition: var(--transition);
            position: relative;
        }

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

        .qr-popover {
            position: absolute;
            bottom: 60px;
            right: 0;
            width: 150px;
            background: var(--bg-card);
            border: 1px solid var(--border-neon);
            padding: 10px;
            border-radius: 8px;
            display: none;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0,0,0,0.5);
        }

        .qr-popover img {
            width: 100%;
            height: auto;
        }

        .qr-popover p {
            font-size: 11px;
            color: var(--text-gray);
            margin-top: 5px;
        }

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

        /* 页脚 */
        footer {
            background: #04050a;
            border-top: 1px solid var(--border-neon);
            padding: 60px 0 20px 0;
            color: var(--text-gray);
        }

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

        .footer-logo-desc p {
            margin-top: 15px;
            font-size: 14px;
        }

        .footer-links h4 {
            color: #fff;
            margin-bottom: 15px;
        }

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

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

        .footer-links ul li a {
            color: var(--text-gray);
            text-decoration: none;
            font-size: 13px;
            transition: var(--transition);
        }

        .footer-links ul li a:hover {
            color: var(--neon-blue);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            font-size: 12px;
        }

        .friend-links {
            margin-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            font-size: 12px;
        }

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

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

        /* 响应式调整 */
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--bg-dark);
                border-bottom: 1px solid var(--border-neon);
                padding: 20px;
            }

            .nav-menu.active {
                display: flex;
            }

            .nav-toggle {
                display: flex;
            }

            .about-grid, .contact-grid {
                grid-template-columns: 1fr;
            }

            .timeline::before {
                left: 20px;
            }

            .timeline-item {
                width: 100%;
                padding-left: 45px;
                padding-right: 0;
            }

            .timeline-item:nth-child(odd) {
                left: 0;
                text-align: left;
            }

            .timeline-item:nth-child(even) {
                left: 0;
                text-align: left;
            }

            .timeline-dot {
                left: 12px !important;
            }

            .footer-grid {
                grid-template-columns: 1fr;
            }
        }