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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }

        .yewq9-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .yewq9-header {
            background: #fff;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .yewq9-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }

        .yewq9-logo img {
            height: 40px;
        }

        .yewq9-nav-menu {
            display: flex;
            gap: 30px;
        }

        .yewq9-nav-link {
            text-decoration: none;
            color: #333;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .yewq9-nav-link:hover {
            color: #2196F3;
        }

        .yewq9-hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 80px 0;
            text-align: center;
        }

        .yewq9-hero-title {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
        }

        .yewq9-hero-subtitle {
            font-size: 1.3rem;
            margin-bottom: 40px;
            opacity: 0.9;
        }

        .yewq9-download-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .yewq9-download-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 15px 30px;
            background: rgba(255,255,255,0.2);
            border: 2px solid rgba(255,255,255,0.3);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
        }

        .yewq9-download-btn:hover {
            background: rgba(255,255,255,0.3);
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.2);
        }

        .yewq9-main-content {
            padding: 80px 0;
        }

        .yewq9-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
            margin-bottom: 60px;
        }

        .yewq9-feature-card {
            background: white;
            padding: 40px;
            border-radius: 15px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
            text-align: center;
            transition: transform 0.3s ease;
        }

        .yewq9-feature-card:hover {
            transform: translateY(-5px);
        }

        .yewq9-feature-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, #667eea, #764ba2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 2rem;
            color: white;
        }

        .yewq9-feature-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: #333;
        }

        .yewq9-feature-desc {
            color: #666;
            line-height: 1.7;
        }

        .yewq9-install-section {
            background: white;
            padding: 60px 0;
            margin: 60px 0;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }

        .yewq9-section-title {
            font-size: 2.5rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 50px;
            color: #333;
        }

        .yewq9-install-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }

        .yewq9-step {
            text-align: center;
            padding: 30px;
        }

        .yewq9-step-number {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: bold;
            margin: 0 auto 20px;
        }

        .yewq9-step-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: #333;
        }

        .yewq9-step-desc {
            color: #666;
        }

        .yewq9-compatibility {
            background: #f8f9fa;
            padding: 60px 0;
            margin: 60px 0;
            border-radius: 20px;
        }

        .yewq9-compat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .yewq9-compat-card {
            background: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }

        .yewq9-compat-title {
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: #333;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .yewq9-compat-list {
            list-style: none;
        }

        .yewq9-compat-list li {
            padding: 8px 0;
            color: #666;
            border-bottom: 1px solid #eee;
        }

        .yewq9-compat-list li:last-child {
            border-bottom: none;
        }

        .yewq9-cta-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 80px 0;
            text-align: center;
            border-radius: 20px;
            margin: 60px 0;
        }

        .yewq9-cta-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .yewq9-cta-desc {
            font-size: 1.2rem;
            margin-bottom: 40px;
            opacity: 0.9;
        }

        .yewq9-cta-button {
            display: inline-block;
            padding: 20px 40px;
            background: white;
            color: #667eea;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }

        .yewq9-cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(0,0,0,0.3);
        }

        .yewq9-footer {
            background: #333;
            color: white;
            padding: 40px 0;
            text-align: center;
        }

        .yewq9-footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }

        .yewq9-footer-section h3 {
            margin-bottom: 15px;
            color: #fff;
        }

        .yewq9-footer-section a {
            color: #ccc;
            text-decoration: none;
            display: block;
            margin-bottom: 8px;
            transition: color 0.3s ease;
        }

        .yewq9-footer-section a:hover {
            color: #667eea;
        }

        .yewq9-footer-bottom {
            border-top: 1px solid #555;
            padding-top: 20px;
            color: #ccc;
        }

        @media (max-width: 768px) {
            .yewq9-nav-menu {
                display: none;
            }

            .yewq9-hero-title {
                font-size: 2rem;
            }

            .yewq9-download-buttons {
                flex-direction: column;
                align-items: center;
            }

            .yewq9-section-title {
                font-size: 2rem;
            }

            .yewq9-cta-title {
                font-size: 2rem;
            }
        }