/* 全局样式 - 保持与主站一致 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }

        :root {
            --primary-color: #2563eb;
            --secondary-color: #1e40af;
            --accent-color: #3b82f6;
            --light-color: #f8fafc;
            --dark-color: #1e293b;
            --text-color: #334155;
            --border-color: #e2e8f0;
            --success-color: #10b981;
            --orange-color: #f97316;
            --purple-color: #8b5cf6;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            color: var(--text-color);
            line-height: 1.6;
            background-color: #ffffff;
        }

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

        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }

        /* 导航栏样式 */
        header {
            background-color: white;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
        }

        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--dark-color);
        }

        .logo span {
            color: var(--primary-color);
        }

        .nav-links {
            display: flex;
            gap: 30px;
        }

        .nav-links a {
            font-weight: 600;
            position: relative;
            padding: 5px 0;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-color);
            transition: width 0.3s ease;
        }

        .nav-links a:hover::after {
            width: 100%;
        }

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

        .mobile-menu-btn {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark-color);
        }

        /* 文章头部 */
        .article-header {
            background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
            padding: 120px 0 60px;
            margin-top: 80px;
            text-align: center;
        }

        .article-title {
            font-size: 2.5rem;
            color: var(--dark-color);
            margin-bottom: 20px;
            line-height: 1.3;
        }

        .article-subtitle {
            font-size: 1.2rem;
            color: #64748b;
            max-width: 800px;
            margin: 0 auto 30px;
        }

        .version-badge {
            display: inline-block;
            background: var(--success-color);
            color: white;
            padding: 6px 15px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-top: 10px;
        }

        /* 系统概览 */
        .overview-section {
            padding: 60px 0;
            background: white;
        }

        .overview-cards {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
            margin-top: 40px;
        }

        .overview-card {
            background: var(--light-color);
            border-radius: 10px;
            padding: 25px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .overview-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary-color);
            box-shadow: 0 10px 20px rgba(37, 99, 235, 0.1);
        }

        .overview-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: white;
            font-size: 1.5rem;
        }

        .overview-card h3 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: var(--dark-color);
        }

        /* 功能模块详情 */
        .features-section {
            padding: 60px 0;
            background: #f8fafc;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }

        .feature-card {
            background: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            border-left: 4px solid var(--primary-color);
            transition: all 0.3s ease;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }

        .feature-header {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }

        .feature-number {
            width: 40px;
            height: 40px;
            background: var(--primary-color);
            color: white;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            margin-right: 15px;
            flex-shrink: 0;
        }

        .feature-card h3 {
            font-size: 1.3rem;
            color: var(--dark-color);
        }

        .feature-list {
            list-style: none;
            padding-left: 0;
        }

        .feature-list li {
            padding: 8px 0;
            padding-left: 25px;
            position: relative;
            color: var(--text-color);
            border-bottom: 1px dashed var(--border-color);
        }

        .feature-list li:last-child {
            border-bottom: none;
        }

        .feature-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--success-color);
            font-weight: bold;
        }

        /* 流程图展示 */
        .flow-section {
            padding: 60px 0;
            background: white;
        }

        .flow-container {
            max-width: 900px;
            margin: 40px auto 0;
        }

        .flow-step {
            display: flex;
            align-items: center;
            margin-bottom: 30px;
            position: relative;
        }

        .flow-step::before {
            content: '';
            position: absolute;
            left: 35px;
            top: 50px;
            bottom: -30px;
            width: 2px;
            background: var(--border-color);
        }

        .flow-step:last-child::before {
            display: none;
        }

        .step-number {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 800;
            margin-right: 30px;
            flex-shrink: 0;
            position: relative;
            z-index: 1;
        }

        .step-content {
            flex: 1;
            background: var(--light-color);
            padding: 20px;
            border-radius: 10px;
            border: 1px solid var(--border-color);
        }

        .step-content h4 {
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: var(--dark-color);
        }

        /* 定价信息 */
        .pricing-section {
            padding: 60px 0;
            background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
            text-align: center;
        }

        .pricing-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            max-width: 800px;
            margin: 40px auto 0;
        }

        .pricing-card {
            background: white;
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            border: 2px solid transparent;
            transition: all 0.3s ease;
        }

        .pricing-card.free:hover {
            border-color: var(--success-color);
        }

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

        .pricing-badge {
            display: inline-block;
            padding: 8px 20px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .free .pricing-badge {
            background: var(--success-color);
            color: white;
        }

        .paid .pricing-badge {
            background: var(--primary-color);
            color: white;
        }

        .pricing-card h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--dark-color);
        }

        .price {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--dark-color);
            margin-bottom: 30px;
        }

        .price .unit {
            font-size: 1rem;
            color: var(--gray-600);
        }

        .features-list {
            text-align: left;
            margin-bottom: 30px;
        }

        .features-list li {
            padding: 8px 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .features-list li i {
            color: var(--success-color);
        }

        /* CTA区域 */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            color: white;
            text-align: center;
        }

        .cta-content {
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-title {
            font-size: 2rem;
            margin-bottom: 20px;
        }

        .cta-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            margin-top: 30px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 30px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            text-decoration: none;
        }

        .btn-primary {
            background: white;
            color: var(--primary-color);
        }

        .btn-primary:hover {
            background: #f1f5f9;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(255, 255, 255, 0.2);
        }

        .btn-outline {
            background: transparent;
            color: white;
            border: 2px solid white;
        }

        .btn-outline:hover {
            background: white;
            color: var(--primary-color);
            transform: translateY(-3px);
        }

        /* 页脚样式 */
        footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 60px 0 20px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-column h3 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }

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

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

        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
        }

        /* 响应式设计 */
        @media (max-width: 992px) {
            .overview-cards {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .feature-grid {
                grid-template-columns: 1fr;
            }
            
            .pricing-cards {
                grid-template-columns: 1fr;
            }
            
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: white;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
            }

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

            .mobile-menu-btn {
                display: block;
            }

            .article-title {
                font-size: 2rem;
            }
            
            .article-header {
                padding: 100px 0 40px;
            }
            
            .overview-cards {
                grid-template-columns: 1fr;
            }
            
            .flow-step {
                flex-direction: column;
                text-align: center;
            }
            
            .flow-step::before {
                left: 50%;
                top: 70px;
                bottom: -30px;
            }
            
            .step-number {
                margin-right: 0;
                margin-bottom: 20px;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
            }
            
            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .btn {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
        }

        @media (max-width: 576px) {
            .article-title {
                font-size: 1.7rem;
            }
            
            .feature-card {
                padding: 20px;
            }
            
            .pricing-card {
                padding: 30px 20px;
            }
        }