* {
            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: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        }

        .sge7h-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .sge7h-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;
        }

        .sge7h-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }

        .sge7h-logo {
            height: 40px;
            width: auto;
        }

        .sge7h-nav-menu {
            display: flex;
            gap: 2rem;
            list-style: none;
        }

        .sge7h-nav-link {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }

        .sge7h-nav-link:hover {
            color: #667eea;
        }

        .sge7h-nav-link::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 0;
            background: #667eea;
            transition: width 0.3s ease;
        }

        .sge7h-nav-link:hover::after {
            width: 100%;
        }

        .sge7h-hero {
            background: linear-gradient(135deg, rgba(102, 126, 234, 0.9), rgba(118, 75, 162, 0.9));
            color: white;
            padding: 4rem 0;
            text-align: center;
        }

        .sge7h-hero-title {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 1rem;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }

        .sge7h-hero-subtitle {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }

        .sge7h-version-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-weight: 600;
            margin-bottom: 2rem;
            backdrop-filter: blur(10px);
        }

        .sge7h-main-content {
            background: white;
            margin: -2rem auto 0;
            border-radius: 20px 20px 0 0;
            box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.1);
            position: relative;
            z-index: 10;
        }

        .sge7h-content-section {
            padding: 3rem 0;
        }

        .sge7h-section-title {
            font-size: 2rem;
            font-weight: 600;
            margin-bottom: 2rem;
            color: #333;
            text-align: center;
        }

        .sge7h-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
        }

        .sge7h-feature-card {
            background: #f8f9ff;
            padding: 2rem;
            border-radius: 15px;
            border-left: 4px solid #667eea;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .sge7h-feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(102, 126, 234, 0.2);
        }

        .sge7h-feature-icon {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, #667eea, #764ba2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            color: white;
            font-size: 1.5rem;
        }

        .sge7h-feature-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: #333;
        }

        .sge7h-feature-desc {
            color: #666;
            line-height: 1.6;
        }

        .sge7h-changelog {
            background: #f8f9ff;
            padding: 2rem;
            border-radius: 15px;
            margin: 2rem 0;
        }

        .sge7h-changelog-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            color: #333;
        }

        .sge7h-changelog-item {
            padding: 1rem 0;
            border-bottom: 1px solid #e0e6ff;
        }

        .sge7h-changelog-item:last-child {
            border-bottom: none;
        }

        .sge7h-changelog-version {
            font-weight: 600;
            color: #667eea;
            margin-bottom: 0.5rem;
        }

        .sge7h-changelog-list {
            list-style: none;
            padding-left: 1rem;
        }

        .sge7h-changelog-list li {
            position: relative;
            padding-left: 1.5rem;
            margin-bottom: 0.5rem;
            color: #666;
        }

        .sge7h-changelog-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #667eea;
            font-weight: bold;
        }

        .sge7h-cta-section {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            padding: 4rem 0;
            text-align: center;
        }

        .sge7h-cta-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .sge7h-cta-desc {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            opacity: 0.9;
        }

        .sge7h-download-buttons {
            display: flex;
            gap: 1rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .sge7h-btn {
            display: inline-block;
            padding: 1rem 2rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            font-size: 1rem;
        }

        .sge7h-btn-primary {
            background: white;
            color: #667eea;
        }

        .sge7h-btn-primary:hover {
            background: #f0f0f0;
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }

        .sge7h-btn-secondary {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            border: 2px solid white;
        }

        .sge7h-btn-secondary:hover {
            background: white;
            color: #667eea;
        }

        .sge7h-footer {
            background: #2c3e50;
            color: white;
            padding: 3rem 0 1rem;
        }

        .sge7h-footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .sge7h-footer-section h3 {
            margin-bottom: 1rem;
            color: #ecf0f1;
        }

        .sge7h-footer-section ul {
            list-style: none;
        }

        .sge7h-footer-section ul li {
            margin-bottom: 0.5rem;
        }

        .sge7h-footer-section ul li a {
            color: #bdc3c7;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .sge7h-footer-section ul li a:hover {
            color: #667eea;
        }

        .sge7h-footer-bottom {
            text-align: center;
            padding-top: 2rem;
            border-top: 1px solid #34495e;
            color: #bdc3c7;
        }

        .sge7h-highlight {
            color: #667eea;
            font-weight: 600;
        }

        @media (max-width: 768px) {
            .sge7h-nav-menu {
                display: none;
            }

            .sge7h-hero-title {
                font-size: 2rem;
            }

            .sge7h-features-grid {
                grid-template-columns: 1fr;
            }

            .sge7h-download-buttons {
                flex-direction: column;
                align-items: center;
            }

            .sge7h-btn {
                width: 100%;
                max-width: 300px;
            }
        }