:root {
            --primary: #6366f1;
            --primary-light: #818cf8;
            --secondary: #ec4899;
            --accent: #10b981;
            --bg-color: #fafafa;
            --card-bg: #ffffff;
            --text-main: #1f2937;
            --text-muted: #4b5563;
            --border-color: #e5e7eb;
            --gradient-1: linear-gradient(135deg, #6366f1 0%, #ec4899 50%, #f59e0b 100%);
            --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
            --radius: 16px;
        }

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

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

        a {
            text-decoration: none;
            color: inherit;
        }

        ul {
            list-style: none;
        }

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

        /* 顶部导航 */
        header {
            position: sticky;
            top: 0;
            background: rgba(250, 250, 250, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

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

        .ai-page-logo {
            max-width: 120px;
            height: auto;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            background: var(--gradient-1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0;
        }

        .nav-links a {
            padding: 8px 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            transition: color 0.2s;
        }

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 999px;
            cursor: pointer;
            transition: all 0.2s ease;
            border: none;
        }

        .btn-primary {
            background: var(--gradient-1);
            color: #ffffff;
            box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
        }

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

        /* Hero 首屏 */
        .hero {
            padding: 80px 0 60px;
            text-align: center;
            background: radial-gradient(circle at 50% 20%, rgba(99, 102, 241, 0.08) 0%, rgba(236, 72, 153, 0.05) 50%, transparent 100%);
            position: relative;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: 999px;
            margin-bottom: 24px;
            border: 1px solid rgba(99, 102, 241, 0.2);
        }

        .hero h1 {
            font-size: clamp(32px, 5vw, 56px);
            font-weight: 900;
            letter-spacing: -0.02em;
            color: var(--text-main);
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .hero p {
            font-size: clamp(16px, 2vw, 20px);
            color: var(--text-muted);
            max-width: 760px;
            margin: 0 auto 36px;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
        }

        .btn-outline {
            background: #ffffff;
            color: var(--text-main);
            border: 1px solid var(--border-color);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* 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(--card-bg);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            text-align: center;
        }

        .stat-number {
            font-size: 32px;
            font-weight: 800;
            background: var(--gradient-1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
        }

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

        /* 公共区块样式 */
        section {
            padding: 80px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
        }

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

        /* 服务能力卡片 */
        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .service-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 30px;
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, border-color 0.3s ease;
        }

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

        .service-icon {
            width: 48px;
            height: 48px;
            background: rgba(99, 102, 241, 0.1);
            color: var(--primary);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 20px;
        }

        .service-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

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

        /* 一站式制作 / 流程步骤 */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
        }

        .process-step {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: var(--radius);
            position: relative;
            box-shadow: var(--shadow);
        }

        .step-num {
            font-size: 40px;
            font-weight: 900;
            color: rgba(99, 102, 241, 0.15);
            margin-bottom: 15px;
        }

        .process-step h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

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

        /* 行业方案 */
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 24px;
        }

        .solution-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 32px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        .solution-card h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .solution-list {
            margin-top: 15px;
        }

        .solution-list li {
            font-size: 14px;
            color: var(--text-muted);
            padding: 6px 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .solution-list li::before {
            content: "✓";
            color: var(--accent);
            font-weight: bold;
        }

        /* 对比评测表格 */
        .comparison-wrapper {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

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

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

        .comparison-table th {
            background: #f8fafc;
            font-weight: 700;
            color: var(--text-main);
        }

        .comparison-table td {
            color: var(--text-muted);
        }

        .highlight-col {
            background: rgba(99, 102, 241, 0.03);
            font-weight: 600;
            color: var(--primary) !important;
        }

        .rating-box {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: var(--radius);
            text-align: center;
            margin-bottom: 30px;
            box-shadow: var(--shadow);
        }

        .rating-stars {
            color: #f59e0b;
            font-size: 24px;
            margin-bottom: 10px;
        }

        .rating-score {
            font-size: 36px;
            font-weight: 900;
            color: var(--text-main);
        }

        /* Token 比价 */
        .token-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 20px;
        }

        .token-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 24px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            text-align: center;
        }

        .token-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .token-price {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
        }

        /* 客户评论卡片 */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .testimonial-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 30px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

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

        .testimonial-author {
            font-weight: 700;
            color: var(--text-main);
            font-size: 15px;
        }

        .testimonial-role {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* 案例与文章列表 */
        .articles-grid, .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .article-card, .case-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
        }

        .article-card h3, .case-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-main);
        }

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

        .read-more {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
        }

        /* 需求匹配表单 */
        .form-container {
            max-width: 700px;
            margin: 0 auto;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 40px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

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

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

        .form-control {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            font-size: 14px;
            outline: none;
            transition: border-color 0.2s;
        }

        .form-control:focus {
            border-color: var(--primary);
        }

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

        /* 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: var(--radius);
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .faq-question {
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-answer {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            display: none;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        /* 标签云与友情链接 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 20px;
        }

        .tag {
            background: #f1f5f9;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            color: var(--text-muted);
            border: 1px solid var(--border-color);
        }

        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            margin-top: 20px;
        }

        .friend-links a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color 0.2s;
        }

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

        /* 页脚 */
        footer {
            background: #111827;
            color: #9ca3af;
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

        .footer-col ul li a {
            font-size: 14px;
            color: #9ca3af;
            transition: color 0.2s;
        }

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

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 13px;
            color: #6b7280;
        }

        /* 浮动客服 */
        .float-kefu {
            position: fixed;
            right: 30px;
            bottom: 30px;
            background: var(--primary);
            color: #ffffff;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 25px rgba(99, 102, 241, 0.4);
            cursor: pointer;
            z-index: 999;
            transition: transform 0.2s;
        }

        .float-kefu:hover {
            transform: scale(1.05);
        }

        .kefu-popup {
            position: fixed;
            right: 30px;
            bottom: 100px;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            display: none;
            z-index: 1000;
            text-align: center;
            width: 240px;
        }

        .kefu-popup img {
            width: 160px;
            height: 160px;
            margin-bottom: 10px;
            border-radius: 8px;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: var(--card-bg);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-color);
                box-shadow: var(--shadow);
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-menu-btn {
                display: block;
            }
            .nav-btns {
                display: none;
            }
        }