body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .logo { font-size: 2.5em; font-weight: bold; color: #FF6B35; text-align: center; margin: 20px 0; }
        nav { background-color: #2C3E50; padding: 15px; display: flex; justify-content: space-around; flex-wrap: wrap; }
        nav a { color: white; text-decoration: none; padding: 5px 10px; }
        .mobile-nav-btn { display: none; background: #FF6B35; color: white; border: none; padding: 10px; }
        h1 { color: #FF6B35; border-bottom: 3px solid #FF6B35; padding-bottom: 10px; }
        h2 { color: #3498DB; margin-top: 30px; }
        h3 { color: #2ECC71; }
        .download-btn, .login-btn { background: #FF6B35; color: white; padding: 12px 25px; text-decoration: none; border-radius: 5px; margin: 15px 0; display: inline-block; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .gallery { display: flex; flex-wrap: wrap; gap: 15px; }
        .gallery img { width: 30%; }
        table { width: 100%; border-collapse: collapse; margin: 20px 0; }
        th, td { border: 1px solid #ddd; padding: 12px; text-align: left; }
        th { background-color: #f2f2f2; }
        .tag { background: #3498DB; color: white; padding: 3px 8px; border-radius: 3px; margin: 3px; display: inline-block; }
        .copyright { text-align: center; margin-top: 40px; padding: 20px; background: #2C3E50; color: white; }
        @media (max-width: 768px) {
            .mobile-nav-btn { display: block; }
            nav { display: none; flex-direction: column; }
            nav.active { display: flex; }
            .gallery img { width: 100%; }
        }