:root {
            --bg-primary: #fafcfb;
            --bg-secondary: #ffffff;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --neon-green: #39ff14;
            --neon-blue: #00f0ff;
            --neon-purple: #7000ff;
            --accent-glow: linear-gradient(135deg, #00f0ff, #39ff14, #7000ff);
            --border-color: #e2e8f0;
            --container-width: 1200px;
        }

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

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

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            border: none;
            outline: none;
            transition: all 0.3s ease;
        }

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

        /* 炫彩荧光风边框与微光特效 */
        .neon-border {
            position: relative;
            background: var(--bg-secondary);
            border-radius: 12px;
            z-index: 1;
        }
        .neon-border::before {
            content: '';
            position: absolute;
            top: -1px; left: -1px; right: -1px; bottom: -1px;
            background: var(--accent-glow);
            border-radius: 13px;
            z-index: -1;
            opacity: 0.3;
            transition: opacity 0.3s ease;
        }
        .neon-border:hover::before {
            opacity: 0.8;
        }

        .glow-text {
            background: linear-gradient(135deg, #0f172a 30%, #7000ff 70%, #00f0ff 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* 顶部导航 */
        header {
            position: sticky;
            top: 0;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .ai-page-logo {
            max-height: 40px;
            width: auto;
        }
        .nav-links {
            display: flex;
            gap: 20px;
            align-items: center;
        }
        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
        }
        .nav-links a:hover {
            color: var(--neon-purple);
        }
        .nav-btn {
            background: var(--text-primary);
            color: #fff;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
        }
        .nav-btn:hover {
            background: var(--neon-purple);
            box-shadow: 0 4px 15px rgba(112, 0, 255, 0.4);
        }
        .menu-toggle {
            display: none;
            background: none;
            font-size: 24px;
            color: var(--text-primary);
        }

        /* Hero 首屏 - 无任何图片 */
        .hero {
            padding: 100px 0 80px 0;
            text-align: center;
            background: radial-gradient(circle at top right, rgba(0, 240, 255, 0.08), transparent 40%),
                        radial-gradient(circle at bottom left, rgba(112, 0, 255, 0.08), transparent 40%);
            position: relative;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(112, 0, 255, 0.08);
            border: 1px solid rgba(112, 0, 255, 0.2);
            color: var(--neon-purple);
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }
        .hero h1 {
            font-size: 46px;
            line-height: 1.25;
            font-weight: 800;
            margin-bottom: 24px;
            letter-spacing: -1px;
        }
        .hero p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto 36px auto;
        }
        .hero-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, #7000ff, #00f0ff);
            color: #fff;
            padding: 14px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 16px;
            box-shadow: 0 10px 20px -5px rgba(112, 0, 255, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 15px 25px -5px rgba(112, 0, 255, 0.5);
        }
        .btn-secondary {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            color: var(--text-primary);
            padding: 14px 28px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 16px;
        }
        .btn-secondary:hover {
            border-color: var(--neon-blue);
            background: rgba(0, 240, 255, 0.05);
        }

        /* 数据指标卡片 */
        .metrics-bar {
            margin-top: -20px;
            margin-bottom: 60px;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--bg-secondary);
            padding: 24px;
            border-radius: 12px;
            text-align: center;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
        }
        .metric-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--neon-purple);
            margin-bottom: 8px;
        }
        .metric-label {
            font-size: 14px;
            color: var(--text-secondary);
        }

        /* 通用区块样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 15px;
            color: var(--text-primary);
        }
        .section-header p {
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }

        /* 关于我们 */
        .about-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .about-text h3 {
            font-size: 24px;
            margin-bottom: 16px;
        }
        .about-text p {
            color: var(--text-secondary);
            margin-bottom: 20px;
        }
        .about-list {
            list-style: none;
        }
        .about-list li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 12px;
            font-size: 15px;
        }
        .about-list li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--neon-blue);
            font-weight: bold;
        }
        .about-highlight {
            padding: 30px;
            border-left: 4px solid var(--neon-purple);
            background: rgba(112, 0, 255, 0.02);
            border-radius: 0 12px 12px 0;
        }

        /* AIGC 服务能力 */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }
        .service-card {
            padding: 30px;
            border-radius: 12px;
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }
        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 30px rgba(0, 240, 255, 0.15);
        }
        .service-icon {
            font-size: 36px;
            margin-bottom: 20px;
        }
        .service-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }
        .service-card p {
            color: var(--text-secondary);
            font-size: 14px;
        }

        /* 一站式制作 */
        .workflow-timeline {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 40px;
        }
        .workflow-timeline::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 5%;
            width: 90%;
            height: 2px;
            background: var(--border-color);
            z-index: 1;
        }
        .workflow-step {
            width: 18%;
            text-align: center;
            position: relative;
            z-index: 2;
        }
        .step-num {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--bg-secondary);
            border: 2px solid var(--neon-purple);
            color: var(--neon-purple);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            margin: 0 auto 20px auto;
            box-shadow: 0 0 15px rgba(112,0,255,0.2);
        }
        .workflow-step:hover .step-num {
            background: var(--neon-purple);
            color: #fff;
        }
        .workflow-step h3 {
            font-size: 16px;
            margin-bottom: 8px;
        }
        .workflow-step p {
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* 对比评测 */
        .rating-box {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            margin-bottom: 40px;
            background: var(--bg-secondary);
            padding: 20px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }
        .rating-value {
            font-size: 48px;
            font-weight: 800;
            color: var(--neon-purple);
        }
        .rating-stars {
            color: #f59e0b;
            font-size: 24px;
        }
        .compare-table-wrapper {
            overflow-x: auto;
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-secondary);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        .compare-table th, .compare-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }
        .compare-table th {
            background: #f1f5f9;
            font-weight: 700;
        }
        .compare-table tr:hover {
            background: rgba(0, 240, 255, 0.02);
        }
        .highlight-row {
            background: rgba(112, 0, 255, 0.03);
            font-weight: 600;
        }

        /* 智能需求匹配 */
        .matcher-container {
            max-width: 700px;
            margin: 0 auto;
            background: var(--bg-secondary);
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }
        .matcher-group {
            margin-bottom: 24px;
        }
        .matcher-label {
            display: block;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .matcher-options {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
        }
        .matcher-btn {
            background: var(--bg-primary);
            border: 1px solid var(--border-color);
            padding: 12px;
            border-radius: 8px;
            text-align: center;
            font-size: 14px;
        }
        .matcher-btn.active {
            border-color: var(--neon-purple);
            background: rgba(112, 0, 255, 0.05);
            color: var(--neon-purple);
            font-weight: 600;
        }
        .matcher-result {
            margin-top: 30px;
            padding: 20px;
            border-radius: 8px;
            background: #f8fafc;
            display: none;
        }

        /* Token 比价 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .token-card {
            background: var(--bg-secondary);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            position: relative;
        }
        .token-card.best-value::after {
            content: "极力推荐";
            position: absolute;
            top: 15px; right: 15px;
            background: var(--neon-green);
            color: #000;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 8px;
            border-radius: 4px;
        }
        .token-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
        }
        .token-price {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 15px;
        }
        .token-price span {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: normal;
        }

        /* 人工智能培训 */
        .training-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }
        .training-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            text-align: center;
        }
        .training-badge {
            font-size: 12px;
            background: #f1f5f9;
            padding: 4px 10px;
            border-radius: 20px;
            display: inline-block;
            margin-bottom: 15px;
        }

        /* 案例中心 */
        .cases-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }
        .case-card {
            background: var(--bg-secondary);
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        .case-image-wrapper {
            position: relative;
            background: #f1f5f9;
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }
        .case-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .case-info {
            padding: 24px;
        }
        .case-tag {
            font-size: 12px;
            color: var(--neon-purple);
            font-weight: 600;
            text-transform: uppercase;
            margin-bottom: 8px;
            display: inline-block;
        }
        .case-info h3 {
            font-size: 20px;
            margin-bottom: 10px;
        }
        .case-info p {
            color: var(--text-secondary);
            font-size: 14px;
        }

        /* 百科与资讯 */
        .info-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }
        .wiki-list, .news-list {
            background: var(--bg-secondary);
            padding: 30px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }
        .item-row {
            padding: 16px 0;
            border-bottom: 1px solid var(--border-color);
        }
        .item-row:last-child {
            border-bottom: none;
        }
        .item-row h4 {
            font-size: 16px;
            margin-bottom: 6px;
        }
        .item-row p {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .news-link {
            font-size: 14px;
            color: var(--neon-purple);
            font-weight: 500;
            margin-top: 10px;
            display: inline-block;
        }

        /* 客户评论 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .review-card {
            background: var(--bg-secondary);
            padding: 24px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }
        .review-text {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 20px;
            font-style: italic;
        }
        .review-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .user-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #cbd5e1;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: #fff;
        }
        .user-info h4 {
            font-size: 14px;
        }
        .user-info span {
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* FAQ */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
        }
        .faq-trigger {
            width: 100%;
            background: none;
            text-align: left;
            padding: 20px 0;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-trigger::after {
            content: "+";
            font-size: 20px;
            color: var(--text-secondary);
        }
        .faq-item.active .faq-trigger::after {
            content: "−";
        }
        .faq-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }
        .faq-content p {
            padding-bottom: 20px;
            color: var(--text-secondary);
            font-size: 14px;
        }

        /* 表单与联系我们 */
        .contact-layout {
            display: grid;
            grid-template-columns: 3fr 2fr;
            gap: 40px;
        }
        .contact-form-wrapper {
            background: var(--bg-secondary);
            padding: 40px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
        }
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }
        .form-full {
            grid-column: span 2;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group label {
            font-size: 14px;
            font-weight: 600;
        }
        .form-group input, .form-group select, .form-group textarea {
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            background: var(--bg-primary);
            font-family: inherit;
            font-size: 14px;
        }
        .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
            border-color: var(--neon-purple);
            outline: none;
        }
        .contact-info-panel {
            background: var(--text-primary);
            color: #fff;
            padding: 40px;
            border-radius: 12px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .contact-info-panel h3 {
            font-size: 24px;
            margin-bottom: 20px;
        }
        .info-item {
            margin-bottom: 20px;
        }
        .info-item label {
            font-size: 12px;
            color: #94a3b8;
            display: block;
        }
        .info-item span {
            font-size: 16px;
            font-weight: 600;
        }
        .kefu-qr {
            width: 130px;
            height: 130px;
            background: #fff;
            padding: 8px;
            border-radius: 8px;
            margin-top: 20px;
        }

        /* 友情链接与页脚 */
        footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid #1e293b;
        }
        .footer-logo img {
            max-height: 40px;
            margin-bottom: 20px;
        }
        .footer-col h4 {
            color: #fff;
            margin-bottom: 20px;
            font-size: 16px;
        }
        .footer-col ul {
            list-style: none;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .friendship-links {
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid #1e293b;
        }
        .friendship-links h5 {
            color: #fff;
            margin-bottom: 10px;
        }
        .friendship-links-list {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }
        .friendship-links-list a {
            color: #64748b;
        }
        .friendship-links-list a:hover {
            color: var(--neon-blue);
        }
        .footer-bottom {
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        /* 浮动客服 */
        .floating-kefu {
            position: fixed;
            bottom: 40px;
            right: 40px;
            z-index: 999;
            background: var(--text-primary);
            color: #fff;
            padding: 12px 24px;
            border-radius: 30px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.2);
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
        }
        .floating-kefu:hover {
            transform: scale(1.05);
            background: var(--neon-purple);
        }
        .kefu-popover {
            display: none;
            position: absolute;
            bottom: 60px;
            right: 0;
            background: #fff;
            color: #000;
            padding: 15px;
            border-radius: 12px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
            text-align: center;
            width: 180px;
        }
        .kefu-popover img {
            width: 150px;
            height: 150px;
            margin-bottom: 10px;
        }
        .floating-kefu:hover .kefu-popover {
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .reviews-grid {
                grid-template-columns: 1fr;
            }
            .token-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border-color);
                padding: 20px;
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
            .hero h1 {
                font-size: 32px;
            }
            .about-layout, .contact-layout, .info-layout, .cases-grid {
                grid-template-columns: 1fr;
            }
            .workflow-timeline {
                flex-direction: column;
                gap: 30px;
            }
            .workflow-timeline::before {
                display: none;
            }
            .workflow-step {
                width: 100%;
            }
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-full {
                grid-column: span 1;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 15px;
                text-align: center;
            }
            .matcher-options {
                grid-template-columns: 1fr;
            }
        }