:root {
            --bg-color: #080510;
            --card-bg: #120d24;
            --card-border: #231942;
            --primary: #ff007f;
            --secondary: #8a2be2;
            --accent: #00f0ff;
            --text-main: #ffffff;
            --text-muted: #a59cb8;
            --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

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

        body {
            background-color: var(--bg-color);
            color: var(--text-main);
            font-family: var(--font-family);
            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(8, 5, 16, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--card-border);
            z-index: 1000;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            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-menu a {
            color: var(--text-muted);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

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

        .nav-btn-group {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s;
            cursor: pointer;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            box-shadow: 0 0 15px rgba(255, 0, 127, 0.4);
            border: none;
        }

        .btn-primary:hover {
            box-shadow: 0 0 25px rgba(255, 0, 127, 0.7);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
        }

        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
            transform: translateY(-2px);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 24px;
            cursor: pointer;
        }

        /* Hero首屏 (纯CSS科技感，不含图片) */
        .hero {
            padding: 150px 0 80px 0;
            background: radial-gradient(circle at 50% 30%, rgba(138, 43, 226, 0.2) 0%, rgba(8, 5, 16, 0) 70%);
            text-align: center;
            position: relative;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 20%;
            left: 10%;
            width: 150px;
            height: 150px;
            background: var(--primary);
            filter: blur(130px);
            opacity: 0.3;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 10%;
            right: 10%;
            width: 200px;
            height: 200px;
            background: var(--accent);
            filter: blur(150px);
            opacity: 0.2;
            pointer-events: none;
        }

        .tagline {
            display: inline-block;
            padding: 5px 15px;
            background: rgba(255, 0, 127, 0.1);
            border: 1px solid rgba(255, 0, 127, 0.3);
            border-radius: 20px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .hero h1 {
            font-size: 3rem;
            line-height: 1.2;
            font-weight: 800;
            background: linear-gradient(135deg, #fff 30%, var(--primary) 70%, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 25px;
            letter-spacing: -1px;
        }

        .hero p {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 40px auto;
        }

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

        .hero-btns .btn {
            padding: 15px 40px;
            font-size: 16px;
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 40px;
        }

        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            padding: 30px 20px;
            border-radius: 16px;
            transition: all 0.3s;
        }

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

        .stat-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 10px;
        }

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

        /* 通用区块样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--card-border);
        }

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

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 15px;
            color: var(--text-main);
            position: relative;
            display: inline-block;
        }

        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 50px;
            height: 3px;
            background: var(--primary);
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 16px;
        }

        /* 关于我们 */
        .about-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

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

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

        .about-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 30px;
        }

        .about-feature-item {
            background: rgba(255, 255, 255, 0.02);
            padding: 15px;
            border-radius: 8px;
            border-left: 3px solid var(--secondary);
        }

        .about-feature-item h4 {
            font-size: 15px;
            margin-bottom: 5px;
        }

        .about-feature-item p {
            font-size: 12px;
            margin: 0;
        }

        .about-visual {
            position: relative;
            text-align: center;
        }

        .about-visual img {
            border-radius: 16px;
            border: 1px solid var(--card-border);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
        }

        /* AIGC服务 & 场景 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

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

        .service-card:hover {
            border-color: var(--accent);
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 240, 255, 0.1);
        }

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

        .service-card h3 {
            font-size: 1.25rem;
            margin-bottom: 12px;
            color: var(--text-main);
        }

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

        /* 一站式模型云标签 */
        .cloud-section {
            background: rgba(138, 43, 226, 0.05);
            border-radius: 20px;
            padding: 40px;
            text-align: center;
            margin-top: 40px;
        }

        .cloud-section h4 {
            font-size: 1.2rem;
            margin-bottom: 25px;
            color: var(--accent);
        }

        .cloud-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }

        .tag {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--card-border);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 13px;
            color: var(--text-muted);
            transition: all 0.3s;
        }

        .tag:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: scale(1.05);
        }

        /* 标准化流程 & 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(--card-border);
            transform: translateX(-50%);
        }

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

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

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

        .timeline-badge {
            position: absolute;
            top: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary);
            border: 4px solid var(--bg-color);
            z-index: 10;
        }

        .timeline-item:nth-child(odd) .timeline-badge {
            right: -10px;
        }

        .timeline-item:nth-child(even) .timeline-badge {
            left: -10px;
        }

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

        .timeline-content h3 {
            color: var(--accent);
            font-size: 18px;
            margin-bottom: 8px;
        }

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

        /* 解决方案网格 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

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

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

        .solution-info {
            padding: 25px;
        }

        .solution-info h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .solution-info p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

        /* 对比评测表格 */
        .table-responsive {
            overflow-x: auto;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 16px;
            padding: 20px;
            margin-top: 30px;
        }

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

        th, td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--card-border);
            font-size: 14px;
        }

        th {
            color: var(--accent);
            font-weight: 600;
        }

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

        .highlight-cell {
            background: rgba(255, 0, 127, 0.05);
            color: var(--primary);
            font-weight: bold;
        }

        .score-box {
            background: linear-gradient(135deg, rgba(255, 0, 127, 0.1), rgba(138, 43, 226, 0.1));
            border: 1px solid var(--primary);
            border-radius: 12px;
            padding: 30px;
            display: flex;
            justify-content: space-around;
            align-items: center;
            margin-bottom: 40px;
            text-align: center;
        }

        .score-item h4 {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 5px;
        }

        .score-item p {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
        }

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

        .token-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 12px;
            padding: 25px;
            text-align: center;
        }

        .token-card.best-value {
            border-color: var(--accent);
            position: relative;
        }

        .token-card.best-value::after {
            content: '推荐';
            position: absolute;
            top: 10px;
            right: 10px;
            background: var(--accent);
            color: #000;
            font-size: 10px;
            font-weight: 700;
            padding: 2px 8px;
            border-radius: 10px;
        }

        .token-name {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .token-price {
            font-size: 2rem;
            color: var(--primary);
            font-weight: 800;
            margin-bottom: 10px;
        }

        .token-features {
            list-style: none;
            margin-top: 15px;
            padding-top: 15px;
            border-top: 1px solid var(--card-border);
            font-size: 13px;
            color: var(--text-muted);
        }

        .token-features li {
            margin-bottom: 8px;
        }

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

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

        .case-img-box {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #000;
        }

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

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

        .case-body {
            padding: 25px;
        }

        .case-tag {
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            margin-bottom: 8px;
            display: block;
        }

        .case-body h3 {
            font-size: 1.25rem;
            margin-bottom: 10px;
        }

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

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

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

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

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

        .review-info h4 {
            font-size: 15px;
            color: var(--text-main);
        }

        .review-info p {
            font-size: 12px;
            color: var(--accent);
        }

        /* 培训版块 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 15px;
        }

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

        .training-card:hover {
            border-color: var(--primary);
            box-shadow: 0 5px 15px rgba(255, 0, 127, 0.2);
        }

        .training-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 15px;
        }

        .training-card h3 {
            font-size: 14px;
            margin-bottom: 8px;
        }

        .training-card p {
            font-size: 11px;
            color: var(--text-muted);
        }

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

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

        .faq-question {
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            user-select: none;
            transition: background 0.3s;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.02);
        }

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

        .faq-item.active .faq-answer {
            padding: 0 20px 20px 20px;
            max-height: 200px;
        }

        .faq-icon::after {
            content: '+';
            font-size: 20px;
            color: var(--accent);
        }

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

        /* 术语百科与文章 */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
        }

        .article-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 12px;
            padding: 25px;
            transition: all 0.3s;
        }

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

        .article-card h3 {
            font-size: 16px;
            margin-bottom: 12px;
        }

        .article-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 15px;
        }

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

        /* 智能匹配需求表单 */
        .form-section {
            background: linear-gradient(180deg, var(--bg-color) 0%, var(--card-bg) 100%);
        }

        .form-container {
            max-width: 650px;
            margin: 0 auto;
            background: rgba(8, 5, 16, 0.8);
            border: 1px solid var(--card-border);
            border-radius: 16px;
            padding: 40px;
            box-shadow: 0 20px 50px rgba(0,0,0,0.5);
        }

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

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

        .form-control {
            width: 100%;
            background: #181330;
            border: 1px solid var(--card-border);
            color: #fff;
            padding: 12px 16px;
            border-radius: 8px;
            font-size: 14px;
            transition: all 0.3s;
        }

        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 10px rgba(255, 0, 127, 0.2);
        }

        /* 加盟代理 */
        .agency-box {
            background: linear-gradient(135deg, rgba(255,0,127,0.1) 0%, rgba(138,43,226,0.1) 100%);
            border: 1px solid var(--primary);
            border-radius: 16px;
            padding: 40px;
            text-align: center;
        }

        .agency-box h3 {
            font-size: 1.8rem;
            margin-bottom: 15px;
            color: var(--accent);
        }

        .agency-box p {
            color: var(--text-muted);
            max-width: 700px;
            margin: 0 auto 30px auto;
        }

        /* 页脚 */
        footer {
            background: #040208;
            border-top: 1px solid var(--card-border);
            padding: 60px 0 30px 0;
            font-size: 14px;
            color: var(--text-muted);
        }

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

        .footer-logo img {
            height: 35px;
            margin-bottom: 15px;
        }

        .footer-col h4 {
            color: var(--text-main);
            margin-bottom: 20px;
            font-size: 15px;
        }

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

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

        .footer-col ul li a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

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

        .qr-codes {
            display: flex;
            gap: 20px;
            margin-top: 15px;
        }

        .qr-item {
            text-align: center;
        }

        .qr-item img {
            width: 90px;
            height: 90px;
            border-radius: 8px;
            border: 1px solid var(--card-border);
        }

        .qr-item span {
            display: block;
            font-size: 11px;
            margin-top: 5px;
        }

        .friend-links {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid var(--card-border);
        }

        .friend-links a {
            color: var(--text-muted);
            text-decoration: none;
            margin-right: 15px;
            font-size: 12px;
        }

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

        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--card-border);
            font-size: 12px;
        }

        /* 浮动客服 */
        .floating-kf {
            position: fixed;
            right: 20px;
            bottom: 20px;
            z-index: 999;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 5px 15px rgba(255, 0, 127, 0.4);
            cursor: pointer;
            transition: transform 0.3s;
        }

        .floating-kf:hover {
            transform: scale(1.1);
        }

        .floating-kf svg {
            width: 25px;
            height: 25px;
            fill: #fff;
        }

        .kf-modal {
            position: fixed;
            right: 80px;
            bottom: 20px;
            background: var(--card-bg);
            border: 1px solid var(--primary);
            border-radius: 12px;
            padding: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.5);
            display: none;
            z-index: 999;
            width: 220px;
            text-align: center;
        }

        .kf-modal img {
            width: 150px;
            height: 150px;
            margin: 10px 0;
        }

        .kf-modal h4 {
            font-size: 14px;
            color: var(--text-main);
        }

        .kf-modal p {
            font-size: 12px;
            color: var(--text-muted);
        }

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

        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: var(--bg-color);
                border-bottom: 1px solid var(--card-border);
                padding: 20px;
                gap: 15px;
            }
            .nav-menu.show {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .hero h1 {
                font-size: 2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
                gap: 10px;
            }
            .hero-btns .btn {
                width: 100%;
                max-width: 280px;
            }
            .about-content {
                grid-template-columns: 1fr;
            }
            .services-grid, .solutions-grid, .reviews-grid, .articles-grid, .case-grid, .token-grid {
                grid-template-columns: 1fr;
            }
            .training-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline::before {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 50px;
                padding-right: 0;
                text-align: left !important;
            }
            .timeline-item:nth-child(even) {
                left: 0;
            }
            .timeline-badge {
                left: 10px !important;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }