* {
            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;
        }

        .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: 15px 0;
        }

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

        .sge7h-nav-menu {
            display: flex;
            gap: 30px;
            align-items: center;
        }

        .sge7h-nav-link {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 8px 16px;
            border-radius: 25px;
        }

        .sge7h-nav-link:hover {
            color: #667eea;
            background: rgba(102, 126, 234, 0.1);
        }

        .sge7h-main {
            padding: 60px 0;
        }

        .sge7h-hero-section {
            text-align: center;
            margin-bottom: 60px;
        }

        .sge7h-main-title {
            font-size: 3.5rem;
            font-weight: 700;
            color: white;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }

        .sge7h-subtitle {
            font-size: 1.3rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .sge7h-download-card {
            background: white;
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
            margin-bottom: 40px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .sge7h-version-info {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }

        .sge7h-info-item {
            text-align: center;
            padding: 20px;
            background: #f8f9ff;
            border-radius: 12px;
            border: 2px solid #e8ecff;
        }

        .sge7h-info-label {
            font-size: 0.9rem;
            color: #666;
            margin-bottom: 5px;
        }

        .sge7h-info-value {
            font-size: 1.1rem;
            font-weight: 600;
            color: #333;
        }

        .sge7h-download-buttons {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-bottom: 30px;
        }

        .sge7h-download-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
            padding: 18px 40px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-size: 1.2rem;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
        }

        .sge7h-download-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(102, 126, 234, 0.6);
        }

        .sge7h-btn-icon {
            font-size: 1.5rem;
        }

        .sge7h-security-badges {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .sge7h-badge {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: #e8f5e8;
            color: #2d5a2d;
            border-radius: 25px;
            font-size: 0.9rem;
            font-weight: 500;
        }

        .sge7h-features-section {
            background: white;
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
            margin-bottom: 40px;
        }

        .sge7h-section-title {
            font-size: 2rem;
            font-weight: 600;
            color: #333;
            text-align: center;
            margin-bottom: 30px;
        }

        .sge7h-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
        }

        .sge7h-feature-item {
            text-align: center;
            padding: 25px;
            border-radius: 15px;
            background: #f8f9ff;
            transition: all 0.3s ease;
        }

        .sge7h-feature-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }

        .sge7h-feature-icon {
            font-size: 3rem;
            color: #667eea;
            margin-bottom: 15px;
        }

        .sge7h-feature-title {
            font-size: 1.2rem;
            font-weight: 600;
            color: #333;
            margin-bottom: 10px;
        }

        .sge7h-feature-desc {
            color: #666;
            line-height: 1.5;
        }

        .sge7h-requirements-section {
            background: white;
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
            margin-bottom: 40px;
        }

        .sge7h-requirements-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .sge7h-requirement-card {
            padding: 25px;
            background: #f8f9ff;
            border-radius: 15px;
            border-left: 5px solid #667eea;
        }

        .sge7h-requirement-title {
            font-size: 1.3rem;
            font-weight: 600;
            color: #333;
            margin-bottom: 15px;
        }

        .sge7h-requirement-list {
            list-style: none;
        }

        .sge7h-requirement-list li {
            padding: 5px 0;
            color: #666;
            position: relative;
            padding-left: 20px;
        }

        .sge7h-requirement-list li:before {
            content: "✓";
            position: absolute;
            left: 0;
            color: #4CAF50;
            font-weight: bold;
        }

        .sge7h-footer {
            background: rgba(0, 0, 0, 0.8);
            color: white;
            text-align: center;
            padding: 40px 0;
            margin-top: 60px;
        }

        .sge7h-footer-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .sge7h-footer-links {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .sge7h-footer-link {
            color: rgba(255, 255, 255, 0.8);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .sge7h-footer-link:hover {
            color: white;
        }

        .sge7h-copyright {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
        }

        @media (max-width: 768px) {
            .sge7h-nav-menu {
                gap: 15px;
            }

            .sge7h-nav-link {
                font-size: 0.9rem;
                padding: 6px 12px;
            }

            .sge7h-main-title {
                font-size: 2.5rem;
            }

            .sge7h-download-card {
                padding: 25px;
                margin: 0 10px;
            }

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

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

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

            .sge7h-footer-links {
                flex-direction: column;
                gap: 15px;
            }
        }