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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }

        /* 导航栏样式 */
        .ef9dq1-navbar {
            background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        .ef9dq1-nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 2rem;
        }

        .ef9dq1-logo {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            text-decoration: none;
            color: white;
            font-weight: bold;
            font-size: 1.5rem;
        }

        .ef9dq1-logo img {
            height: 40px;
            width: auto;
        }

        .ef9dq1-nav-menu {
            display: flex;
            list-style: none;
            gap: 2rem;
        }

        .ef9dq1-nav-link {
            color: #ecf0f1;
            text-decoration: none;
            font-size: 0.95rem;
            transition: color 0.3s ease;
            position: relative;
        }

        .ef9dq1-nav-link:hover {
            color: #3498db;
        }

        .ef9dq1-nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: #3498db;
            transition: width 0.3s ease;
        }

        .ef9dq1-nav-link:hover::after {
            width: 100%;
        }

        /* 主容器 */
        .ef9dq1-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        /* Hero区域 */
        .ef9dq1-hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 5rem 2rem;
            text-align: center;
            margin-bottom: 3rem;
        }

        .ef9dq1-hero-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .ef9dq1-hero h1 {
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            font-weight: 700;
            letter-spacing: -0.5px;
        }

        .ef9dq1-hero-subtitle {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            opacity: 0.95;
            line-height: 1.8;
        }

        .ef9dq1-cta-group {
            display: flex;
            gap: 1.5rem;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 2rem;
        }

        .ef9dq1-btn-primary {
            background-color: #3498db;
            color: white;
            padding: 1rem 2.5rem;
            border: none;
            border-radius: 6px;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
        }

        .ef9dq1-btn-primary:hover {
            background-color: #2980b9;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(52, 152, 219, 0.4);
        }

        .ef9dq1-btn-secondary {
            background-color: white;
            color: #667eea;
            padding: 1rem 2.5rem;
            border: 2px solid white;
            border-radius: 6px;
            font-size: 1.05rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .ef9dq1-btn-secondary:hover {
            background-color: transparent;
            color: white;
        }

        /* 特性区域 */
        .ef9dq1-features {
            background: white;
            padding: 4rem 2rem;
            margin-bottom: 3rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .ef9dq1-section-title {
            font-size: 2.2rem;
            text-align: center;
            margin-bottom: 3rem;
            color: #2c3e50;
            font-weight: 700;
        }

        .ef9dq1-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .ef9dq1-feature-card {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            padding: 2rem;
            border-radius: 8px;
            transition: all 0.3s ease;
            border-left: 4px solid #3498db;
        }

        .ef9dq1-feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        .ef9dq1-feature-icon {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            display: inline-block;
        }

        .ef9dq1-feature-card h3 {
            font-size: 1.3rem;
            margin-bottom: 0.8rem;
            color: #2c3e50;
        }

        .ef9dq1-feature-card p {
            color: #555;
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* 系统兼容性区域 */
        .ef9dq1-compatibility {
            background: white;
            padding: 4rem 2rem;
            margin-bottom: 3rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .ef9dq1-compat-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 2rem;
        }

        .ef9dq1-compat-table thead {
            background-color: #34495e;
            color: white;
        }

        .ef9dq1-compat-table th,
        .ef9dq1-compat-table td {
            padding: 1.2rem;
            text-align: left;
            border-bottom: 1px solid #ecf0f1;
        }

        .ef9dq1-compat-table tbody tr:nth-child(odd) {
            background-color: #f8f9fa;
        }

        .ef9dq1-compat-table tbody tr:hover {
            background-color: #ecf0f1;
        }

        .ef9dq1-compat-badge {
            display: inline-block;
            padding: 0.4rem 0.8rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        .ef9dq1-badge-success {
            background-color: #d4edda;
            color: #155724;
        }

        .ef9dq1-badge-info {
            background-color: #d1ecf1;
            color: #0c5460;
        }

        /* 安装指南区域 */
        .ef9dq1-guide {
            background: white;
            padding: 4rem 2rem;
            margin-bottom: 3rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .ef9dq1-guide-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .ef9dq1-step-card {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 2rem;
            border-radius: 8px;
            text-align: center;
        }

        .ef9dq1-step-number {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
        }

        .ef9dq1-step-card h4 {
            font-size: 1.2rem;
            margin-bottom: 0.8rem;
        }

        .ef9dq1-step-card p {
            line-height: 1.6;
            font-size: 0.95rem;
            opacity: 0.95;
        }

        /* 常见问题区域 */
        .ef9dq1-faq {
            background: white;
            padding: 4rem 2rem;
            margin-bottom: 3rem;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .ef9dq1-faq-list {
            max-width: 800px;
            margin: 2rem auto;
        }

        .ef9dq1-faq-item {
            margin-bottom: 1.5rem;
            border: 1px solid #ecf0f1;
            border-radius: 6px;
            overflow: hidden;
        }

        .ef9dq1-faq-question {
            background-color: #f8f9fa;
            padding: 1.5rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: #2c3e50;
            transition: background-color 0.3s ease;
        }

        .ef9dq1-faq-question:hover {
            background-color: #ecf0f1;
        }

        .ef9dq1-faq-toggle {
            font-size: 1.5rem;
            transition: transform 0.3s ease;
        }

        .ef9dq1-faq-item.active .ef9dq1-faq-toggle {
            transform: rotate(180deg);
        }

        .ef9dq1-faq-answer {
            padding: 1.5rem;
            background: white;
            color: #555;
            line-height: 1.7;
            display: none;
        }

        .ef9dq1-faq-item.active .ef9dq1-faq-answer {
            display: block;
        }

        /* 页脚 */
        .ef9dq1-footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 3rem 2rem;
            text-align: center;
            border-top: 3px solid #667eea;
        }

        .ef9dq1-footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            text-align: left;
            margin-bottom: 2rem;
        }

        .ef9dq1-footer-section h4 {
            margin-bottom: 1rem;
            color: white;
        }

        .ef9dq1-footer-section ul {
            list-style: none;
        }

        .ef9dq1-footer-section ul li {
            margin-bottom: 0.5rem;
        }

        .ef9dq1-footer-section a {
            color: #ecf0f1;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .ef9dq1-footer-section a:hover {
            color: #3498db;
        }

        .ef9dq1-footer-bottom {
            border-top: 1px solid #34495e;
            padding-top: 2rem;
            text-align: center;
            font-size: 0.9rem;
        }

        .ef9dq1-footer-bottom p {
            margin-bottom: 0.5rem;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .ef9dq1-nav-menu {
                gap: 1rem;
                font-size: 0.85rem;
            }

            .ef9dq1-hero h1 {
                font-size: 2rem;
            }

            .ef9dq1-hero-subtitle {
                font-size: 1rem;
            }

            .ef9dq1-cta-group {
                flex-direction: column;
                align-items: center;
            }

            .ef9dq1-btn-primary,
            .ef9dq1-btn-secondary {
                width: 100%;
            }

            .ef9dq1-section-title {
                font-size: 1.8rem;
            }

            .ef9dq1-features-grid {
                grid-template-columns: 1fr;
            }

            .ef9dq1-guide-steps {
                grid-template-columns: 1fr;
            }

            .ef9dq1-container {
                padding: 0 1rem;
            }

            .ef9dq1-nav-container {
                padding: 1rem;
            }
        }

        @media (max-width: 480px) {
            .ef9dq1-hero {
                padding: 3rem 1rem;
            }

            .ef9dq1-hero h1 {
                font-size: 1.5rem;
            }

            .ef9dq1-nav-menu {
                gap: 0.5rem;
                font-size: 0.8rem;
            }

            .ef9dq1-section-title {
                font-size: 1.5rem;
            }
        }