body {
            box-sizing: border-box;
        }
        
        @keyframes slideIn {
            from { transform: translateX(-100%); opacity: 0; }
            to { transform: translateX(0); opacity: 1; }
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
            40% { transform: translateY(-10px); }
            60% { transform: translateY(-5px); }
        }
        
        @keyframes float {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-10px); }
        }
        
        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }
        
        .animate-slideIn { animation: slideIn 0.8s ease-out; }
        .animate-fadeIn { animation: fadeIn 0.6s ease-out; }
        .animate-bounce-custom { animation: bounce 2s infinite; }
        .animate-float { animation: float 3s ease-in-out infinite; }
        .animate-pulse-custom { animation: pulse 2s infinite; }
        
        .hero-bg {
            background: linear-gradient(135deg, rgba(34, 197, 94, 0.9), rgba(249, 115, 22, 0.8)),
                        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 800"><rect fill="%2322c55e" width="1200" height="800"/><circle fill="%23f97316" cx="200" cy="200" r="100" opacity="0.3"/><circle fill="%23ffffff" cx="800" cy="400" r="150" opacity="0.2"/><rect fill="%23065f46" x="600" y="100" width="200" height="300" opacity="0.4"/></svg>');
            background-size: cover;
            background-position: center;
        }
        
        .card-hover {
            transition: all 0.3s ease;
        }
        
        .card-hover:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        }
        
        .btn-ripple {
            position: relative;
            overflow: hidden;
        }
        
        .btn-ripple::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 0;
            height: 0;
            border-radius: 50%;
            background: rgba(255,255,255,0.3);
            transform: translate(-50%, -50%);
            transition: width 0.6s, height 0.6s;
        }
        
        .btn-ripple:hover::after {
            width: 300px;
            height: 300px;
        }
        
        .nav-underline {
            position: relative;
        }
        
        .nav-underline::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: #f97316;
            transition: width 0.3s ease;
        }
        
        .nav-underline:hover::after,
        .nav-underline.active::after {
            width: 100%;
        }
        
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            z-index: 1000;
        }
        
        .modal.show {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .modal-content {
            background: white;
            padding: 2rem;
            border-radius: 1rem;
            max-width: 500px;
            width: 90%;
            transform: scale(0.7);
            transition: transform 0.3s ease;
        }
        
        .modal.show .modal-content {
            transform: scale(1);
        }
        
        .page {
            display: none;
        }
        
        .page.active {
            display: block;
            animation: fadeIn 0.5s ease-out;
        }
        
        .gradient-text {
            background: linear-gradient(135deg, #22c55e, #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .eco-pattern {
            background-image: 
                radial-gradient(circle at 25% 25%, #22c55e 2px, transparent 2px),
                radial-gradient(circle at 75% 75%, #f97316 1px, transparent 1px);
            background-size: 50px 50px;
        }