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

        html, body {
            height: 100%;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.6;
        }

        .ef9dq1-page-wrapper {
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

        /* 导航栏样式 */
        .ef9dq1-navbar {
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            padding: 0 30px;
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .ef9dq1-logo-section {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .ef9dq1-logo {
            width: 45px;
            height: 45px;
            background: #fff;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: #2a5298;
            font-size: 18px;
        }

        .ef9dq1-logo-text {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: -0.5px;
        }

        .ef9dq1-nav-menu {
            display: flex;
            gap: 30px;
            flex: 1;
            margin-left: 50px;
        }

        .ef9dq1-nav-link {
            color: #fff;
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 5px 10px;
            border-bottom: 2px solid transparent;
        }

        .ef9dq1-nav-link:hover {
            color: #ffd700;
            border-bottom-color: #ffd700;
        }

        .ef9dq1-nav-link.ef9dq1-active {
            color: #ffd700;
            border-bottom-color: #ffd700;
        }

        /* 主内容区 */
        .ef9dq1-main-content {
            flex: 1;
        }

        /* 英雄区 */
        .ef9dq1-hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: #fff;
            padding: 80px 30px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .ef9dq1-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }

        .ef9dq1-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
        }

        .ef9dq1-hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .ef9dq1-hero-title {
            font-size: 48px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.2;
            letter-spacing: -1px;
        }

        .ef9dq1-hero-subtitle {
            font-size: 20px;
            margin-bottom: 40px;
            font-weight: 300;
            opacity: 0.95;
        }

        .ef9dq1-hero-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .ef9dq1-btn {
            padding: 14px 40px;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .ef9dq1-btn-primary {
            background: #ffd700;
            color: #333;
        }

        .ef9dq1-btn-primary:hover {
            background: #ffed4e;
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(255, 215, 0, 0.3);
        }

        .ef9dq1-btn-secondary {
            background: transparent;
            color: #fff;
            border: 2px solid #fff;
        }

        .ef9dq1-btn-secondary:hover {
            background: #fff;
            color: #667eea;
            transform: translateY(-2px);
        }

        /* 特性区 */
        .ef9dq1-features {
            padding: 80px 30px;
            background: #f8f9fa;
        }

        .ef9dq1-section-title {
            text-align: center;
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 50px;
            color: #1e3c72;
        }

        .ef9dq1-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .ef9dq1-feature-card {
            background: #fff;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            border-left: 4px solid #667eea;
        }

        .ef9dq1-feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
        }

        .ef9dq1-feature-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 28px;
            margin-bottom: 20px;
        }

        .ef9dq1-feature-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #1e3c72;
        }

        .ef9dq1-feature-desc {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
        }

        /* 系统兼容性区 */
        .ef9dq1-compatibility {
            padding: 80px 30px;
            background: #fff;
        }

        .ef9dq1-compat-content {
            max-width: 1000px;
            margin: 0 auto;
        }

        .ef9dq1-compat-intro {
            font-size: 16px;
            color: #555;
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .ef9dq1-os-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }

        .ef9dq1-os-item {
            background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
            padding: 25px;
            border-radius: 10px;
            border: 1px solid #667eea30;
            text-align: center;
            transition: all 0.3s ease;
        }

        .ef9dq1-os-item:hover {
            background: linear-gradient(135deg, #667eea25 0%, #764ba225 100%);
            border-color: #667eea;
        }

        .ef9dq1-os-name {
            font-size: 18px;
            font-weight: 700;
            color: #1e3c72;
            margin-bottom: 10px;
        }

        .ef9dq1-os-version {
            font-size: 13px;
            color: #666;
        }

        /* 安装指南区 */
        .ef9dq1-installation {
            padding: 80px 30px;
            background: #f8f9fa;
        }

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

        .ef9dq1-steps {
            display: grid;
            gap: 40px;
            margin-bottom: 40px;
        }

        .ef9dq1-step {
            display: flex;
            gap: 30px;
            align-items: flex-start;
        }

        .ef9dq1-step-number {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .ef9dq1-step-content {
            flex: 1;
        }

        .ef9dq1-step-title {
            font-size: 18px;
            font-weight: 700;
            color: #1e3c72;
            margin-bottom: 10px;
        }

        .ef9dq1-step-desc {
            font-size: 14px;
            color: #666;
            line-height: 1.7;
        }

        /* CTA区域 */
        .ef9dq1-cta {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: #fff;
            padding: 60px 30px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .ef9dq1-cta::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }

        .ef9dq1-cta-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
            margin: 0 auto;
        }

        .ef9dq1-cta-title {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 15px;
        }

        .ef9dq1-cta-text {
            font-size: 16px;
            margin-bottom: 30px;
            opacity: 0.95;
        }

        /* 页脚 */
        .ef9dq1-footer {
            background: #1e3c72;
            color: #fff;
            padding: 50px 30px 20px;
            margin-top: auto;
        }

        .ef9dq1-footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .ef9dq1-footer-section {
            font-size: 14px;
        }

        .ef9dq1-footer-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .ef9dq1-footer-link {
            color: #bbb;
            text-decoration: none;
            display: block;
            margin-bottom: 10px;
            transition: color 0.3s ease;
        }

        .ef9dq1-footer-link:hover {
            color: #ffd700;
        }

        .ef9dq1-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            color: #999;
            font-size: 13px;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .ef9dq1-hero-title {
                font-size: 32px;
            }

            .ef9dq1-hero-subtitle {
                font-size: 16px;
            }

            .ef9dq1-hero {
                padding: 50px 20px;
            }

            .ef9dq1-navbar {
                padding: 0 20px;
            }

            .ef9dq1-nav-menu {
                flex-direction: column;
                gap: 15px;
                margin-left: 0;
            }

            .ef9dq1-section-title {
                font-size: 28px;
            }

            .ef9dq1-hero-buttons {
                flex-direction: column;
            }

            .ef9dq1-btn {
                width: 100%;
            }

            .ef9dq1-step {
                flex-direction: column;
                gap: 15px;
            }

            .ef9dq1-cta-title {
                font-size: 24px;
            }

            .ef9dq1-features, .ef9dq1-compatibility, .ef9dq1-installation, .ef9dq1-cta {
                padding: 50px 20px;
            }
        }

        @media (max-width: 480px) {
            .ef9dq1-navbar {
                flex-direction: column;
                height: auto;
                padding: 15px 20px;
                gap: 15px;
            }

            .ef9dq1-nav-menu {
                flex-wrap: wrap;
                justify-content: center;
                gap: 10px;
            }

            .ef9dq1-hero-title {
                font-size: 24px;
            }

            .ef9dq1-section-title {
                font-size: 22px;
            }

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