:root {
    --primary-color: #2E7D32;
    --secondary-color: #4CAF50;
    --accent-color: #8BC34A;
    --text-color: #333;
    --light-bg: #F1F8E9;
    --white: #FFFFFF;
}

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

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
}

.subtitle {
    font-size: 1.5rem;
    opacity: 0.9;
}

/* Mission Section */
.mission {
    padding: 80px 0;
    background-color: var(--light-bg);
    text-align: center;
}

.mission h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* CO2 Chart Section */
.co2-chart {
    padding: 80px 0;
    background-color: var(--white);
}

.chart-container {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    background-color: var(--light-bg);
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Actions Section */
.actions {
    padding: 80px 0;
    background-color: var(--light-bg);
}

.action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.action-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.action-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 20px 0;
    text-align: center;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .subtitle {
        font-size: 1.2rem;
    }
    
    .action-grid {
        grid-template-columns: 1fr;
    }
}