* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }
        .header-bg {
            background: linear-gradient(135deg, #FF6B35 0%, #FF8E53 100%);
        }
        .uno-red { color: #FF4444; }
        .uno-blue { color: #4444FF; }
        .uno-green { color: #44AA44; }
        .uno-yellow { color: #FFAA00; }
        .card-shadow {
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        .nav-link.active {
            border-bottom: 3px solid #FF4444;
            font-weight: 600;
        }
        .btn-primary {
            background-color: #FF4444;
            color: white;
            transition: all 0.3s ease;
        }
        .btn-primary:hover {
            background-color: #FF2222;
            transform: translateY(-2px);
        }
        .section-alt {
            background-color: #f1f8ff;
        }
        .footer-bg {
            background-color: #2c3e50;
        }
        .fade-in {
            animation: fadeIn 0.5s ease-in-out;
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        #backToTop {
            display: none;
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 99;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: #FF4444;
            color: white;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(255,68,68,0.3);
        }
        .hamburger-menu {
            display: none;
            flex-direction: column;
            cursor: pointer;
        }
        .hamburger-menu span {
            height: 3px;
            width: 25px;
            background-color: white;
            margin-bottom: 4px;
            border-radius: 2px;
        }
        @media (max-width: 768px) {
            .hamburger-menu {
                display: flex;
            }
            .nav-links {
                display: none;
                width: 100%;
                position: absolute;
                top: 70px;
                left: 0;
                background-color: #FF6B35;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 10px 15px rgba(0,0,0,0.1);
            }
            .nav-links.active {
                display: flex;
            }
            .nav-links a {
                margin: 10px 0;
                padding: 10px;
                border-bottom: 1px solid rgba(255,255,255,0.2);
            }
            .section-padding {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }
        @media print {
            .no-print {
                display: none !important;
            }
            body {
                font-size: 12pt;
                line-height: 1.4;
            }
        }