:root {
            --primary: #8b5cf6;
            --primary-light: #a78bfa;
            --secondary: #ec4899;
            --accent: #06b6d4;
            --dark: #0f172a;
            --light-bg: #f8fafc;
            --card-bg: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-color: #e2e8f0;
            --neon-gradient: linear-gradient(135deg, #8b5cf6 0%, #ec4899 50%, #06b6d4 100%);
        }

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

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

        /* 布局容器 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

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

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

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

        .brand img {
            height: 40px;
            width: auto;
        }

        .nav-links {
            display: flex;
            gap: 24px;
            align-items: center;
        }

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

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

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .btn-nav {
            background: var(--neon-gradient);
            color: white !important;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(139, 92, 246, 0.2);
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .btn-nav:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(139, 92, 246, 0.3);
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--dark);
        }

        /* 首屏 Hero (无图) */
        .hero {
            padding: 100px 0 80px 0;
            background: radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 10% 80%, rgba(236, 72, 153, 0.08) 0%, transparent 50%);
            position: relative;
            text-align: center;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(139, 92, 246, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            border: 1px solid rgba(139, 92, 246, 0.2);
        }

        .hero h1 {
            font-size: clamp(32px, 4vw, 48px);
            color: var(--dark);
            line-height: 1.25;
            margin-bottom: 20px;
            font-weight: 800;
        }

        .hero h1 span {
            background: var(--neon-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-desc {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 800px;
            margin: 0 auto 36px auto;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--neon-gradient);
            color: white;
            padding: 14px 32px;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            box-shadow: 0 8px 24px rgba(139, 92, 246, 0.3);
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(139, 92, 246, 0.4);
        }

        .btn-secondary {
            background: white;
            color: var(--dark);
            border: 2px solid var(--border-color);
            padding: 12px 32px;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            transition: border-color 0.2s, background-color 0.2s;
        }

        .btn-secondary:hover {
            border-color: var(--primary);
            background-color: var(--light-bg);
        }

        /* 数据指标卡片 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: 16px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .stat-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.05);
            border-color: var(--primary-light);
        }

        .stat-num {
            font-size: 36px;
            font-weight: 700;
            background: var(--neon-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* 通用 Section 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;
            color: var(--dark);
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }

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

        /* 服务能力卡片 */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }

        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 36px 30px;
            border-radius: 20px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--neon-gradient);
            opacity: 0;
            transition: opacity 0.3s;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(139, 92, 246, 0.1);
            border-color: transparent;
        }

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

        .feature-icon {
            font-size: 32px;
            margin-bottom: 20px;
            display: inline-block;
        }

        .feature-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
            color: var(--dark);
        }

        .feature-card p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 16px;
        }

        /* 标签云 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 15px;
        }

        .tag-cloud span {
            background: var(--light-bg);
            color: var(--text-main);
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 12px;
            border: 1px solid var(--border-color);
        }

        /* 流程步骤 */
        .steps-container {
            display: flex;
            justify-content: space-between;
            position: relative;
            margin-top: 40px;
            flex-wrap: wrap;
            gap: 30px;
        }

        .step-item {
            flex: 1;
            min-width: 200px;
            text-align: center;
            position: relative;
            background: var(--card-bg);
            padding: 30px 20px;
            border-radius: 16px;
            border: 1px solid var(--border-color);
        }

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

        .step-item h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }

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

        /* 评测与对比 */
        .rating-badge {
            background: linear-gradient(135deg, #f59e0b 0%, #eab308 100%);
            color: white;
            padding: 12px 24px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            margin-bottom: 30px;
            box-shadow: 0 4px 15px rgba(234, 179, 8, 0.3);
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            background: var(--card-bg);
        }

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

        th, td {
            padding: 16px 24px;
            border-bottom: 1px solid var(--border-color);
            font-size: 14px;
        }

        th {
            background-color: var(--light-bg);
            color: var(--dark);
            font-weight: 600;
        }

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

        .highlight-row {
            background-color: rgba(139, 92, 246, 0.03);
            font-weight: 600;
        }

        .highlight-row td:nth-child(2) {
            color: var(--primary);
        }

        /* Token 比价 */
        .token-price-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .token-price-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .token-info h4 {
            font-size: 16px;
            color: var(--dark);
        }

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

        .token-cost {
            text-align: right;
        }

        .token-cost span {
            font-size: 20px;
            font-weight: 700;
            color: var(--secondary);
        }

        /* 案例展示 */
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .case-card {
            background: var(--card-bg);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: transform 0.3s;
        }

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

        .case-image-wrapper {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #e2e8f0;
        }

        .case-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .case-info {
            padding: 24px;
        }

        .case-tag {
            font-size: 12px;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 8px;
            display: inline-block;
        }

        .case-info h3 {
            font-size: 18px;
            margin-bottom: 8px;
            color: var(--dark);
        }

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

        /* 评论板块 */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .review-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 30px;
            box-shadow: 0 4px 6px rgba(0,0,0,0.01);
        }

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

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

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

        .author-info h4 {
            font-size: 14px;
            color: var(--dark);
        }

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

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

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            margin-bottom: 16px;
            overflow: hidden;
        }

        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--dark);
            user-select: none;
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--text-muted);
            font-size: 14px;
            border-top: 0 solid var(--border-color);
        }

        .faq-item.active .faq-answer {
            padding: 20px 24px;
            max-height: 300px;
            border-top: 1px solid var(--border-color);
        }

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

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

        /* 表单与需求匹配 */
        .contact-layout {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 50px;
            align-items: start;
        }

        .contact-info-panel {
            background: linear-gradient(135deg, rgba(139, 92, 246, 0.03) 0%, rgba(236, 72, 153, 0.03) 100%);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 40px;
        }

        .info-group {
            margin-bottom: 24px;
        }

        .info-group h4 {
            font-size: 16px;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .info-group p, .info-group a {
            color: var(--text-muted);
            font-size: 14px;
            text-decoration: none;
        }

        .qr-codes {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

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

        .qr-item img {
            width: 100%;
            max-width: 120px;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            margin-bottom: 8px;
        }

        .qr-item p {
            font-size: 12px;
            color: var(--dark);
            font-weight: 500;
        }

        .form-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
        }

        .form-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

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

        .form-group.full-width {
            grid-column: span 2;
        }

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            background-color: var(--light-bg);
            transition: border-color 0.2s;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary);
            background-color: white;
        }

        .btn-submit {
            width: 100%;
            background: var(--neon-gradient);
            color: white;
            border: none;
            padding: 14px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(139, 92, 246, 0.2);
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .btn-submit:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(139, 92, 246, 0.3);
        }

        /* 行业资讯 / 知识库 */
        .articles-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

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

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

        .article-card a {
            color: var(--dark);
            text-decoration: none;
            font-size: 14px;
            font-weight: 600;
            display: block;
            margin-bottom: 10px;
            line-height: 1.4;
        }

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

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

        /* 页脚 */
        footer {
            background-color: var(--dark);
            color: #94a3b8;
            padding: 60px 0 30px 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-logo img {
            height: 40px;
            width: auto;
            margin-bottom: 16px;
        }

        .footer-col h5 {
            color: white;
            font-size: 16px;
            margin-bottom: 20px;
            font-weight: 600;
        }

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

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

        .footer-col ul li a {
            color: #94a3b8;
            text-decoration: none;
            transition: color 0.2s;
        }

        .footer-col ul li a:hover {
            color: white;
        }

        .friend-links {
            border-top: 1px solid #334155;
            padding-top: 30px;
            margin-bottom: 30px;
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            align-items: center;
        }

        .friend-links span {
            color: white;
            font-weight: 600;
        }

        .friend-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 13px;
        }

        .friend-links a:hover {
            color: white;
        }

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        /* 浮动客服 */
        .float-kefu {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background: white;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            padding: 12px;
            text-align: center;
            width: 120px;
            transition: transform 0.3s;
        }

        .float-kefu:hover {
            transform: translateY(-5px);
        }

        .float-kefu img {
            width: 100%;
            height: auto;
            border-radius: 8px;
            margin-bottom: 6px;
        }

        .float-kefu span {
            font-size: 11px;
            color: var(--dark);
            font-weight: bold;
            display: block;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .contact-layout {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: white;
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: 0 10px 20px rgba(0,0,0,0.05);
            }
            .nav-links.active {
                display: flex;
            }
            .menu-toggle {
                display: block;
            }
        }

        @media (max-width: 576px) {
            .form-grid {
                grid-template-columns: 1fr;
            }
            .form-group.full-width {
                grid-column: span 1;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }