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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f9f9f9;
        }

        /* 导航栏样式 */
        .sw9d9n-navbar {
            background: linear-gradient(135deg, #ffffff 0%, #f5f5f5 100%);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .sw9d9n-navbar-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }

        .sw9d9n-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 700;
            color: #1a73e8;
            text-decoration: none;
        }

        .sw9d9n-logo img {
            height: 40px;
            width: auto;
        }

        .sw9d9n-nav-menu {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .sw9d9n-nav-link {
            color: #202124;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
            font-size: 14px;
        }

        .sw9d9n-nav-link:hover {
            color: #1a73e8;
        }

        /* 主横幅 */
        .sw9d9n-hero {
            background: linear-gradient(135deg, #1a73e8 0%, #1e88e5 50%, #0d47a1 100%);
            color: white;
            padding: 60px 20px;
            text-align: center;
        }

        .sw9d9n-hero-container {
            max-width: 900px;
            margin: 0 auto;
        }

        .sw9d9n-hero-title {
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .sw9d9n-hero-subtitle {
            font-size: 20px;
            margin-bottom: 30px;
            opacity: 0.95;
            font-weight: 300;
        }

        .sw9d9n-hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 14px;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        /* CTA按钮 */
        .sw9d9n-cta-group {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }

        .sw9d9n-btn-primary {
            background: #fff;
            color: #1a73e8;
            padding: 16px 40px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }

        .sw9d9n-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
        }

        .sw9d9n-btn-secondary {
            background: transparent;
            color: white;
            padding: 16px 40px;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            border: 2px solid white;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .sw9d9n-btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        /* 主要内容区 */
        .sw9d9n-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 60px 20px;
        }

        /* 下载选项区 */
        .sw9d9n-download-section {
            background: white;
            border-radius: 12px;
            padding: 40px;
            margin-bottom: 40px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .sw9d9n-section-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 30px;
            color: #202124;
        }

        .sw9d9n-download-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }

        .sw9d9n-download-card {
            background: #f8f9fa;
            border: 1px solid #e8eaed;
            border-radius: 8px;
            padding: 25px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .sw9d9n-download-card:hover {
            border-color: #1a73e8;
            box-shadow: 0 4px 12px rgba(26, 115, 232, 0.15);
        }

        .sw9d9n-card-icon {
            font-size: 48px;
            margin-bottom: 15px;
        }

        .sw9d9n-card-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: #202124;
        }

        .sw9d9n-card-info {
            font-size: 13px;
            color: #5f6368;
            margin-bottom: 15px;
            line-height: 1.5;
        }

        .sw9d9n-btn-download {
            background: #1a73e8;
            color: white;
            padding: 12px 24px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
            width: 100%;
        }

        .sw9d9n-btn-download:hover {
            background: #1557b0;
            transform: translateY(-1px);
        }

        /* 特性介绍 */
        .sw9d9n-features {
            background: white;
            border-radius: 12px;
            padding: 40px;
            margin-bottom: 40px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .sw9d9n-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .sw9d9n-feature-item {
            padding: 20px;
            border-left: 4px solid #1a73e8;
        }

        .sw9d9n-feature-icon {
            font-size: 32px;
            margin-bottom: 12px;
        }

        .sw9d9n-feature-name {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: #202124;
        }

        .sw9d9n-feature-desc {
            font-size: 14px;
            color: #5f6368;
            line-height: 1.6;
        }

        /* 系统要求 */
        .sw9d9n-requirements {
            background: #f8f9fa;
            border-radius: 12px;
            padding: 40px;
            margin-bottom: 40px;
        }

        .sw9d9n-req-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }

        .sw9d9n-req-item {
            background: white;
            padding: 20px;
            border-radius: 8px;
            border: 1px solid #e8eaed;
        }

        .sw9d9n-req-label {
            font-size: 12px;
            color: #5f6368;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .sw9d9n-req-value {
            font-size: 16px;
            font-weight: 600;
            color: #202124;
        }

        /* FAQ区 */
        .sw9d9n-faq {
            background: white;
            border-radius: 12px;
            padding: 40px;
            margin-bottom: 40px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .sw9d9n-faq-item {
            margin-bottom: 20px;
            padding-bottom: 20px;
            border-bottom: 1px solid #e8eaed;
        }

        .sw9d9n-faq-item:last-child {
            border-bottom: none;
        }

        .sw9d9n-faq-question {
            font-size: 16px;
            font-weight: 600;
            color: #202124;
            margin-bottom: 10px;
            cursor: pointer;
            user-select: none;
        }

        .sw9d9n-faq-answer {
            font-size: 14px;
            color: #5f6368;
            line-height: 1.7;
        }

        /* 页脚 */
        .sw9d9n-footer {
            background: #202124;
            color: white;
            padding: 40px 20px;
            margin-top: 60px;
        }

        .sw9d9n-footer-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .sw9d9n-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }

        .sw9d9n-footer-section h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 15px;
        }

        .sw9d9n-footer-link {
            display: block;
            color: #bdc1c6;
            text-decoration: none;
            font-size: 14px;
            margin-bottom: 10px;
            transition: color 0.3s ease;
        }

        .sw9d9n-footer-link:hover {
            color: white;
        }

        .sw9d9n-footer-bottom {
            border-top: 1px solid #5f6368;
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #9aa0a6;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .sw9d9n-hero-title {
                font-size: 32px;
            }

            .sw9d9n-hero-subtitle {
                font-size: 16px;
            }

            .sw9d9n-nav-menu {
                gap: 15px;
                font-size: 12px;
            }

            .sw9d9n-download-section,
            .sw9d9n-features,
            .sw9d9n-faq {
                padding: 25px;
            }

            .sw9d9n-section-title {
                font-size: 24px;
            }

            .sw9d9n-cta-group {
                flex-direction: column;
            }

            .sw9d9n-btn-primary,
            .sw9d9n-btn-secondary {
                width: 100%;
            }
        }

        @media (max-width: 480px) {
            .sw9d9n-navbar-container {
                flex-direction: column;
                gap: 15px;
            }

            .sw9d9n-nav-menu {
                flex-direction: column;
                gap: 10px;
                width: 100%;
                text-align: center;
            }

            .sw9d9n-hero {
                padding: 40px 20px;
            }

            .sw9d9n-hero-title {
                font-size: 24px;
            }

            .sw9d9n-download-grid {
                grid-template-columns: 1fr;
            }

            .sw9d9n-features-grid {
                grid-template-columns: 1fr;
            }

            .sw9d9n-req-grid {
                grid-template-columns: 1fr;
            }
        }