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

        html, body {
            height: 100%;
        }

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

        .peqx9z-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 导航栏 */
        .peqx9z-navbar {
            background: linear-gradient(135deg, #0088cc 0%, #006ba3 100%);
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        .peqx9z-navbar-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .peqx9z-navbar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: bold;
            color: white;
            font-size: 18px;
        }

        .peqx9z-navbar-logo img {
            height: 40px;
            width: auto;
        }

        .peqx9z-navbar-menu {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .peqx9z-nav-link {
            color: white;
            text-decoration: none;
            font-size: 14px;
            transition: opacity 0.3s ease;
        }

        .peqx9z-nav-link:hover {
            opacity: 0.8;
        }

        /* 主banner区域 */
        .peqx9z-banner {
            background: linear-gradient(135deg, #0088cc 0%, #00b4d8 100%);
            color: white;
            padding: 80px 20px;
            text-align: center;
        }

        .peqx9z-banner-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .peqx9z-banner-title {
            font-size: 48px;
            font-weight: bold;
            margin-bottom: 20px;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }

        .peqx9z-banner-subtitle {
            font-size: 20px;
            margin-bottom: 40px;
            opacity: 0.95;
        }

        .peqx9z-cta-button {
            display: inline-block;
            background: #fff;
            color: #0088cc;
            padding: 16px 48px;
            font-size: 18px;
            font-weight: bold;
            border-radius: 50px;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            margin: 10px;
        }

        .peqx9z-cta-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
        }

        /* 下载选项区域 */
        .peqx9z-download-section {
            background: white;
            padding: 60px 20px;
            margin-top: -30px;
            position: relative;
            z-index: 10;
        }

        .peqx9z-section-title {
            font-size: 36px;
            font-weight: bold;
            text-align: center;
            margin-bottom: 50px;
            color: #333;
        }

        .peqx9z-download-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }

        .peqx9z-download-card {
            background: #f8f9fa;
            border: 2px solid #e0e0e0;
            border-radius: 12px;
            padding: 30px;
            text-align: center;
            transition: all 0.3s ease;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .peqx9z-download-card:hover {
            border-color: #0088cc;
            box-shadow: 0 8px 24px rgba(0, 136, 204, 0.15);
            transform: translateY(-5px);
        }

        .peqx9z-platform-icon {
            font-size: 48px;
            margin-bottom: 15px;
        }

        .peqx9z-platform-name {
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 10px;
            color: #333;
        }

        .peqx9z-platform-desc {
            font-size: 14px;
            color: #666;
            margin-bottom: 20px;
            line-height: 1.5;
        }

        .peqx9z-download-btn {
            background: linear-gradient(135deg, #0088cc 0%, #006ba3 100%);
            color: white;
            padding: 12px 30px;
            border: none;
            border-radius: 8px;
            font-size: 14px;
            font-weight: bold;
            cursor: pointer;
            text-decoration: none;
            display: inline-block;
            transition: all 0.3s ease;
        }

        .peqx9z-download-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 4px 12px rgba(0, 136, 204, 0.4);
        }

        /* 特性区域 */
        .peqx9z-features-section {
            background: #f8f9fa;
            padding: 60px 20px;
        }

        .peqx9z-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
        }

        .peqx9z-feature-item {
            background: white;
            padding: 30px;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .peqx9z-feature-icon {
            font-size: 40px;
            margin-bottom: 15px;
        }

        .peqx9z-feature-title {
            font-size: 18px;
            font-weight: bold;
            margin-bottom: 10px;
            color: #333;
        }

        .peqx9z-feature-desc {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
        }

        /* 系统要求区域 */
        .peqx9z-requirements-section {
            background: white;
            padding: 60px 20px;
        }

        .peqx9z-requirements-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 30px;
        }

        .peqx9z-requirement-box {
            background: #f0f7ff;
            border-left: 4px solid #0088cc;
            padding: 25px;
            border-radius: 8px;
        }

        .peqx9z-requirement-title {
            font-size: 16px;
            font-weight: bold;
            color: #0088cc;
            margin-bottom: 10px;
        }

        .peqx9z-requirement-list {
            list-style: none;
            font-size: 14px;
            color: #666;
        }

        .peqx9z-requirement-list li {
            padding: 5px 0;
        }

        .peqx9z-requirement-list li:before {
            content: "✓ ";
            color: #0088cc;
            font-weight: bold;
            margin-right: 8px;
        }

        /* 常见问题区域 */
        .peqx9z-faq-section {
            background: #f8f9fa;
            padding: 60px 20px;
        }

        .peqx9z-faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .peqx9z-faq-item {
            background: white;
            margin-bottom: 20px;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .peqx9z-faq-question {
            background: #f0f7ff;
            padding: 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: bold;
            color: #333;
            transition: background 0.3s ease;
        }

        .peqx9z-faq-question:hover {
            background: #e8f4fb;
        }

        .peqx9z-faq-toggle {
            font-size: 20px;
            color: #0088cc;
        }

        .peqx9z-faq-answer {
            padding: 20px;
            color: #666;
            line-height: 1.8;
            display: none;
        }

        .peqx9z-faq-answer.active {
            display: block;
        }

        /* 页脚 */
        .peqx9z-footer {
            background: #1a1a1a;
            color: #999;
            padding: 40px 20px;
            text-align: center;
            font-size: 14px;
        }

        .peqx9z-footer-content {
            max-width: 1200px;
            margin: 0 auto;
        }

        .peqx9z-footer-links {
            margin-bottom: 20px;
        }

        .peqx9z-footer-links a {
            color: #999;
            text-decoration: none;
            margin: 0 15px;
            transition: color 0.3s ease;
        }

        .peqx9z-footer-links a:hover {
            color: #0088cc;
        }

        .peqx9z-footer-copyright {
            border-top: 1px solid #333;
            padding-top: 20px;
            margin-top: 20px;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .peqx9z-navbar-menu {
                gap: 15px;
                font-size: 12px;
            }

            .peqx9z-banner-title {
                font-size: 32px;
            }

            .peqx9z-banner-subtitle {
                font-size: 16px;
            }

            .peqx9z-section-title {
                font-size: 28px;
            }

            .peqx9z-download-grid {
                grid-template-columns: 1fr;
            }

            .peqx9z-features-grid {
                grid-template-columns: 1fr;
            }

            .peqx9z-requirements-grid {
                grid-template-columns: 1fr;
            }

            .peqx9z-footer-links {
                display: flex;
                flex-direction: column;
                gap: 10px;
            }

            .peqx9z-footer-links a {
                margin: 0;
            }
        }

        /* 安全标记 */
        .peqx9z-security-badge {
            display: inline-block;
            background: #e8f5e9;
            color: #2e7d32;
            padding: 10px 20px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: bold;
            margin-top: 20px;
        }

        /* 版本信息 */
        .peqx9z-version-info {
            font-size: 12px;
            color: #999;
            margin-top: 10px;
        }