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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }

        .ef9dq1-header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
        }

        .ef9dq1-nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 2rem;
        }

        .ef9dq1-logo-box {
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .ef9dq1-logo-box img {
            height: 40px;
            width: auto;
        }

        .ef9dq1-logo-text {
            font-size: 1.5rem;
            font-weight: bold;
            color: white;
        }

        .ef9dq1-nav-menu {
            display: flex;
            gap: 2rem;
            list-style: none;
        }

        .ef9dq1-nav-link {
            color: white;
            text-decoration: none;
            font-size: 0.95rem;
            transition: opacity 0.3s ease;
            border-bottom: 2px solid transparent;
        }

        .ef9dq1-nav-link:hover {
            opacity: 0.8;
            border-bottom-color: white;
        }

        .ef9dq1-hero-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 4rem 2rem;
            text-align: center;
        }

        .ef9dq1-hero-content {
            max-width: 1000px;
            margin: 0 auto;
        }

        .ef9dq1-hero-title {
            font-size: 3rem;
            font-weight: bold;
            margin-bottom: 1rem;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
        }

        .ef9dq1-hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 2rem;
            opacity: 0.95;
        }

        .ef9dq1-cta-buttons {
            display: flex;
            gap: 1.5rem;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 2rem;
        }

        .ef9dq1-btn-primary {
            background-color: #28a745;
            color: white;
            padding: 1rem 2.5rem;
            font-size: 1.1rem;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            text-decoration: none;
            display: inline-block;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
            font-weight: bold;
        }

        .ef9dq1-btn-primary:hover {
            background-color: #218838;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
        }

        .ef9dq1-btn-secondary {
            background-color: transparent;
            color: white;
            padding: 1rem 2.5rem;
            font-size: 1.1rem;
            border: 2px solid white;
            border-radius: 50px;
            cursor: pointer;
            text-decoration: none;
            display: inline-block;
            transition: all 0.3s ease;
            font-weight: bold;
        }

        .ef9dq1-btn-secondary:hover {
            background-color: white;
            color: #667eea;
            transform: translateY(-3px);
        }

        .ef9dq1-download-info {
            background: rgba(255,255,255,0.1);
            padding: 1.5rem;
            border-radius: 10px;
            max-width: 600px;
            margin: 0 auto;
        }

        .ef9dq1-download-info-item {
            display: inline-block;
            margin: 0.5rem 1.5rem;
            font-size: 0.95rem;
        }

        .ef9dq1-main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem;
        }

        .ef9dq1-content-section {
            background: white;
            padding: 3rem;
            margin-bottom: 2rem;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
        }

        h1 {
            font-size: 2.5rem;
            color: #667eea;
            margin-bottom: 1rem;
        }

        h2 {
            font-size: 1.8rem;
            color: #333;
            margin-bottom: 1.5rem;
            margin-top: 2rem;
            border-left: 4px solid #667eea;
            padding-left: 1rem;
        }

        h3 {
            font-size: 1.3rem;
            color: #555;
            margin-bottom: 1rem;
            margin-top: 1.5rem;
        }

        p {
            color: #666;
            margin-bottom: 1rem;
            font-size: 1rem;
            line-height: 1.8;
        }

        .ef9dq1-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin: 2rem 0;
        }

        .ef9dq1-feature-card {
            background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
            padding: 2rem;
            border-radius: 10px;
            border-left: 4px solid #667eea;
            transition: all 0.3s ease;
        }

        .ef9dq1-feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 5px 20px rgba(102, 126, 234, 0.2);
        }

        .ef9dq1-feature-icon {
            font-size: 2rem;
            margin-bottom: 1rem;
        }

        .ef9dq1-feature-title {
            font-size: 1.2rem;
            font-weight: bold;
            color: #333;
            margin-bottom: 0.5rem;
        }

        .ef9dq1-feature-desc {
            color: #666;
            font-size: 0.95rem;
        }

        .ef9dq1-system-requirements {
            background: #f0f4ff;
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
        }

        .ef9dq1-requirement-item {
            display: flex;
            padding: 0.8rem 0;
            border-bottom: 1px solid #e0e5ff;
        }

        .ef9dq1-requirement-item:last-child {
            border-bottom: none;
        }

        .ef9dq1-requirement-label {
            font-weight: bold;
            color: #667eea;
            min-width: 120px;
        }

        .ef9dq1-requirement-value {
            color: #333;
        }

        .ef9dq1-download-steps {
            background: #f9f9f9;
            padding: 2rem;
            border-radius: 10px;
            margin: 2rem 0;
        }

        .ef9dq1-step {
            display: flex;
            margin-bottom: 1.5rem;
            align-items: flex-start;
        }

        .ef9dq1-step:last-child {
            margin-bottom: 0;
        }

        .ef9dq1-step-number {
            background: #667eea;
            color: white;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            margin-right: 1.5rem;
            flex-shrink: 0;
            font-size: 1.1rem;
        }

        .ef9dq1-step-content h3 {
            margin-top: 0;
        }

        .ef9dq1-version-info {
            background: linear-gradient(135deg, #28a74515 0%, #20c99715 100%);
            padding: 1.5rem;
            border-radius: 10px;
            border-left: 4px solid #28a745;
            margin: 1.5rem 0;
        }

        .ef9dq1-version-label {
            font-weight: bold;
            color: #28a745;
            display: inline-block;
            margin-right: 0.5rem;
        }

        .ef9dq1-version-value {
            color: #333;
        }

        ul, ol {
            margin-left: 2rem;
            margin-bottom: 1.5rem;
        }

        li {
            margin-bottom: 0.8rem;
            color: #666;
            line-height: 1.8;
        }

        .ef9dq1-highlight {
            background-color: #fff3cd;
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
            color: #856404;
            font-weight: 500;
        }

        .ef9dq1-footer {
            background: #333;
            color: white;
            padding: 3rem 2rem;
            text-align: center;
            margin-top: 3rem;
        }

        .ef9dq1-footer-content {
            max-width: 1200px;
            margin: 0 auto;
        }

        .ef9dq1-footer-section {
            margin-bottom: 2rem;
        }

        .ef9dq1-footer-title {
            font-size: 1.1rem;
            font-weight: bold;
            margin-bottom: 1rem;
        }

        .ef9dq1-footer-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .ef9dq1-footer-link {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .ef9dq1-footer-link:hover {
            color: #667eea;
        }

        .ef9dq1-footer-bottom {
            border-top: 1px solid #555;
            padding-top: 1.5rem;
            color: #999;
            font-size: 0.9rem;
        }

        .ef9dq1-warning-box {
            background: #fff3cd;
            border-left: 4px solid #ffc107;
            padding: 1.5rem;
            border-radius: 5px;
            margin: 1.5rem 0;
        }

        .ef9dq1-warning-title {
            font-weight: bold;
            color: #856404;
            margin-bottom: 0.5rem;
        }

        .ef9dq1-success-box {
            background: #d4edda;
            border-left: 4px solid #28a745;
            padding: 1.5rem;
            border-radius: 5px;
            margin: 1.5rem 0;
        }

        .ef9dq1-success-title {
            font-weight: bold;
            color: #155724;
            margin-bottom: 0.5rem;
        }

        .ef9dq1-success-text {
            color: #155724;
        }

        @media (max-width: 768px) {
            .ef9dq1-hero-title {
                font-size: 2rem;
            }

            .ef9dq1-hero-subtitle {
                font-size: 1.1rem;
            }

            .ef9dq1-nav-menu {
                gap: 1rem;
                flex-wrap: wrap;
            }

            .ef9dq1-cta-buttons {
                flex-direction: column;
                align-items: center;
            }

            .ef9dq1-btn-primary,
            .ef9dq1-btn-secondary {
                width: 100%;
                max-width: 300px;
            }

            .ef9dq1-content-section {
                padding: 1.5rem;
            }

            h1 {
                font-size: 1.8rem;
            }

            h2 {
                font-size: 1.4rem;
            }

            .ef9dq1-download-info-item {
                display: block;
                margin: 0.5rem 0;
            }

            .ef9dq1-footer-links {
                gap: 1rem;
            }

            .ef9dq1-nav-container {
                flex-direction: column;
                gap: 1rem;
            }

            .ef9dq1-nav-menu {
                justify-content: center;
            }
        }

        @media (max-width: 480px) {
            .ef9dq1-hero-title {
                font-size: 1.5rem;
            }

            .ef9dq1-nav-menu {
                gap: 0.5rem;
                font-size: 0.85rem;
            }

            .ef9dq1-main-container {
                padding: 1rem;
            }

            .ef9dq1-content-section {
                padding: 1rem;
            }

            h1 {
                font-size: 1.5rem;
            }

            h2 {
                font-size: 1.2rem;
            }
        }