* {
            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: #f8f9fa;
        }

        /* 导航栏样式 */
        .dgca-navbar {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

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

        .dgca-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: white;
            font-weight: bold;
            font-size: 18px;
        }

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

        .dgca-nav-menu {
            display: flex;
            gap: 30px;
            align-items: center;
        }

        .dgca-nav-link {
            color: white;
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: opacity 0.3s ease;
        }

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

        /* 主容器 */
        .dgca-main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }

        /* 英雄区域 */
        .dgca-hero-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 60px 20px;
            border-radius: 8px;
            text-align: center;
            margin-bottom: 40px;
            box-shadow: 0 5px 20px rgba(102, 126, 234, 0.3);
        }

        .dgca-hero-title {
            font-size: 48px;
            font-weight: bold;
            margin-bottom: 15px;
            line-height: 1.2;
        }

        .dgca-hero-subtitle {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.95;
        }

        .dgca-hero-description {
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto 40px;
            line-height: 1.8;
        }

        /* 下载按钮 */
        .dgca-download-button {
            display: inline-block;
            background: #fff;
            color: #667eea;
            padding: 16px 40px;
            font-size: 16px;
            font-weight: bold;
            border-radius: 50px;
            text-decoration: none;
            cursor: pointer;
            border: none;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }

        .dgca-download-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
        }

        /* 内容区域 */
        .dgca-content-section {
            background: white;
            padding: 40px;
            border-radius: 8px;
            margin-bottom: 40px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }

        .dgca-section-title {
            font-size: 32px;
            color: #333;
            margin-bottom: 30px;
            font-weight: bold;
            border-left: 4px solid #667eea;
            padding-left: 15px;
        }

        /* 版本信息 */
        .dgca-version-info {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }

        .dgca-version-card {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            padding: 25px;
            border-radius: 8px;
            border-left: 4px solid #667eea;
            text-align: center;
        }

        .dgca-version-label {
            font-size: 12px;
            color: #666;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 10px;
        }

        .dgca-version-value {
            font-size: 24px;
            font-weight: bold;
            color: #333;
        }

        /* 功能列表 */
        .dgca-features-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }

        .dgca-feature-item {
            display: flex;
            gap: 15px;
            padding: 20px;
            background: #f8f9fa;
            border-radius: 8px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .dgca-feature-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.2);
        }

        .dgca-feature-icon {
            font-size: 28px;
            min-width: 40px;
            text-align: center;
            color: #667eea;
        }

        .dgca-feature-content h3 {
            font-size: 16px;
            color: #333;
            margin-bottom: 8px;
        }

        .dgca-feature-content p {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
        }

        /* 系统要求 */
        .dgca-requirements-table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            background: white;
        }

        .dgca-requirements-table th {
            background: #667eea;
            color: white;
            padding: 15px;
            text-align: left;
            font-weight: bold;
        }

        .dgca-requirements-table td {
            padding: 15px;
            border-bottom: 1px solid #e0e0e0;
        }

        .dgca-requirements-table tr:hover {
            background: #f8f9fa;
        }

        /* 下载区域 */
        .dgca-download-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 50px 40px;
            border-radius: 8px;
            text-align: center;
            margin: 40px 0;
        }

        .dgca-download-section h2 {
            font-size: 32px;
            margin-bottom: 20px;
        }

        .dgca-download-section p {
            font-size: 16px;
            margin-bottom: 30px;
            opacity: 0.95;
        }

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

        .dgca-primary-btn {
            background: white;
            color: #667eea;
            padding: 14px 35px;
            font-size: 16px;
            font-weight: bold;
            border-radius: 50px;
            text-decoration: none;
            border: none;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }

        .dgca-primary-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
        }

        .dgca-secondary-btn {
            background: transparent;
            color: white;
            padding: 14px 35px;
            font-size: 16px;
            font-weight: bold;
            border-radius: 50px;
            text-decoration: none;
            border: 2px solid white;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .dgca-secondary-btn:hover {
            background: white;
            color: #667eea;
        }

        /* FAQ区域 */
        .dgca-faq-section {
            margin-top: 40px;
        }

        .dgca-faq-item {
            background: white;
            margin-bottom: 15px;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }

        .dgca-faq-question {
            background: #f8f9fa;
            padding: 20px;
            cursor: pointer;
            font-weight: bold;
            font-size: 15px;
            color: #333;
            user-select: none;
            transition: background 0.3s ease;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .dgca-faq-question:hover {
            background: #e9ecef;
        }

        .dgca-faq-icon {
            font-size: 18px;
            color: #667eea;
            transition: transform 0.3s ease;
        }

        .dgca-faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            background: white;
        }

        .dgca-faq-answer.active {
            padding: 20px;
            max-height: 500px;
        }

        .dgca-faq-answer p {
            color: #666;
            line-height: 1.8;
        }

        /* 页脚 */
        .dgca-footer {
            background: #2c3e50;
            color: white;
            padding: 40px 20px;
            margin-top: 60px;
        }

        .dgca-footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }

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

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

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

        .dgca-footer-section a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .dgca-footer-section a:hover {
            color: white;
        }

        .dgca-footer-bottom {
            border-top: 1px solid #444;
            padding-top: 20px;
            text-align: center;
            color: #95a5a6;
            font-size: 14px;
        }

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

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

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

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

            .dgca-download-buttons {
                flex-direction: column;
            }

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

            .dgca-content-section {
                padding: 20px;
            }

            .dgca-hero-section {
                padding: 40px 20px;
            }

            .dgca-download-section {
                padding: 30px 20px;
            }

            .dgca-navbar-container {
                flex-wrap: wrap;
            }

            .dgca-nav-menu {
                flex-wrap: wrap;
                width: 100%;
                margin-top: 10px;
            }
        }

        @media (max-width: 480px) {
            .dgca-hero-title {
                font-size: 24px;
            }

            .dgca-version-info {
                grid-template-columns: 1fr;
            }

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

            .dgca-nav-link {
                font-size: 12px;
            }

            .dgca-logo {
                font-size: 14px;
            }
        }