body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; background-color: #f5f5f5; margin: 0; padding: 0; }
        .container { max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 2.5em; font-weight: bold; color: #ff473e; text-align: center; margin: 20px 0; }
        .mobile-nav { display: none; background: #ff473e; color: white; padding: 10px; text-align: center; cursor: pointer; }
        .nav { background: #ff473e; padding: 15px 0; }
        .nav ul { list-style: none; padding: 0; margin: 0; text-align: center; }
        .nav li { display: inline-block; margin: 0 15px; }
        .nav a { color: white; text-decoration: none; font-weight: bold; }
        .content { background: white; padding: 30px; border-radius: 10px; box-shadow: 0 0 10px rgba(0,0,0,0.1); }
        .download-btn, .login-btn { display: inline-block; padding: 12px 25px; background: #ff473e; color: white; text-decoration: none; border-radius: 5px; margin: 10px 0; font-weight: bold; }
        .download-btn:hover, .login-btn:hover { background: #e03e36; }
        img { max-width: 100%; height: auto; border-radius: 8px; margin: 20px 0; }
        h1 { color: #ff473e; border-bottom: 2px solid #ff473e; padding-bottom: 10px; }
        h2 { color: #333; border-bottom: 1px solid #eee; padding-bottom: 5px; }
        h3 { color: #555; }
        .tags { margin: 20px 0; }
        .tag { display: inline-block; background: #eee; padding: 5px 10px; margin: 5px; border-radius: 20px; }
        .footer { text-align: center; padding: 20px; background: #333; color: white; margin-top: 30px; }
        @media (max-width: 768px) {
            .nav ul { display: none; }
            .mobile-nav { display: block; }
            .nav.active ul { display: block; }
            .nav li { display: block; margin: 10px 0; }
        }