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

        body {
            font-family: 'Microsoft YaHei', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
        }

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

        .dgca-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .dgca-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }

        .dgca-logo {
            display: flex;
            align-items: center;
            font-size: 24px;
            font-weight: bold;
            color: #4a5568;
        }

        .dgca-logo img {
            height: 40px;
            margin-right: 10px;
        }

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

        .dgca-nav-link {
            text-decoration: none;
            color: #4a5568;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 8px 16px;
            border-radius: 6px;
        }

        .dgca-nav-link:hover {
            color: #667eea;
            background: rgba(102, 126, 234, 0.1);
        }

        .dgca-main {
            background: white;
            margin: 40px auto;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
            overflow: hidden;
        }

        .dgca-hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 60px 0;
            text-align: center;
        }

        .dgca-hero-title {
            font-size: 48px;
            font-weight: bold;
            margin-bottom: 20px;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        }

        .dgca-hero-subtitle {
            font-size: 20px;
            opacity: 0.9;
            margin-bottom: 30px;
        }

        .dgca-download-btn {
            display: inline-block;
            background: #ff6b6b;
            color: white;
            padding: 15px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-size: 18px;
            font-weight: bold;
            transition: all 0.3s ease;
            box-shadow: 0 8px 25px rgba(255, 107, 107, 0.3);
        }

        .dgca-download-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(255, 107, 107, 0.4);
        }

        .dgca-content {
            padding: 60px 0;
        }

        .dgca-section {
            margin-bottom: 50px;
        }

        .dgca-section-title {
            font-size: 32px;
            color: #2d3748;
            margin-bottom: 30px;
            text-align: center;
            position: relative;
        }

        .dgca-section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 2px;
        }

        .dgca-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .dgca-feature-card {
            background: #f8fafc;
            padding: 30px;
            border-radius: 15px;
            border-left: 5px solid #667eea;
            transition: all 0.3s ease;
        }

        .dgca-feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
        }

        .dgca-feature-icon {
            font-size: 48px;
            margin-bottom: 20px;
            color: #667eea;
        }

        .dgca-feature-title {
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 15px;
            color: #2d3748;
        }

        .dgca-feature-desc {
            color: #718096;
            line-height: 1.7;
        }

        .dgca-version-info {
            background: linear-gradient(135deg, #e3f2fd 0%, #f3e5f5 100%);
            padding: 40px;
            border-radius: 15px;
            margin: 40px 0;
        }

        .dgca-version-title {
            font-size: 24px;
            color: #1976d2;
            margin-bottom: 20px;
            font-weight: bold;
        }

        .dgca-version-list {
            list-style: none;
        }

        .dgca-version-item {
            padding: 10px 0;
            border-bottom: 1px solid rgba(25, 118, 210, 0.1);
            color: #424242;
        }

        .dgca-version-item:last-child {
            border-bottom: none;
        }

        .dgca-changelog {
            background: #fff8e1;
            padding: 30px;
            border-radius: 15px;
            border-left: 5px solid #ffc107;
        }

        .dgca-changelog-title {
            font-size: 22px;
            color: #f57c00;
            margin-bottom: 20px;
            font-weight: bold;
        }

        .dgca-changelog-list {
            list-style: none;
        }

        .dgca-changelog-item {
            padding: 8px 0;
            color: #5d4037;
            position: relative;
            padding-left: 20px;
        }

        .dgca-changelog-item::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #4caf50;
            font-weight: bold;
        }

        .dgca-cta-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 60px 0;
            text-align: center;
            margin: 60px 0 0 0;
        }

        .dgca-cta-title {
            font-size: 36px;
            margin-bottom: 20px;
            font-weight: bold;
        }

        .dgca-cta-desc {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.9;
        }

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

        .dgca-btn-primary {
            background: #ff6b6b;
            color: white;
            padding: 15px 35px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: bold;
            transition: all 0.3s ease;
            box-shadow: 0 8px 25px rgba(255, 107, 107, 0.3);
        }

        .dgca-btn-secondary {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            padding: 15px 35px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: bold;
            transition: all 0.3s ease;
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .dgca-btn-primary:hover,
        .dgca-btn-secondary:hover {
            transform: translateY(-3px);
        }

        .dgca-footer {
            background: #2d3748;
            color: white;
            padding: 40px 0;
            text-align: center;
        }

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

        .dgca-footer-section h3 {
            margin-bottom: 15px;
            color: #667eea;
        }

        .dgca-footer-links {
            list-style: none;
        }

        .dgca-footer-links li {
            margin-bottom: 8px;
        }

        .dgca-footer-links a {
            color: #a0aec0;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .dgca-footer-links a:hover {
            color: #667eea;
        }

        .dgca-footer-bottom {
            border-top: 1px solid #4a5568;
            padding-top: 20px;
            color: #a0aec0;
        }

        @media (max-width: 768px) {
            .dgca-nav-menu {
                display: none;
            }

            .dgca-hero-title {
                font-size: 32px;
            }

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

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

            .dgca-cta-title {
                font-size: 28px;
            }

            .dgca-cta-buttons {
                flex-direction: column;
                align-items: center;
            }
        }