@media (max-width: 1200px) {
    .container {
        max-width: 960px;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    .container {
        max-width: 720px;
    }
    
    h1 {
        font-size: 2.2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .section {
        padding: 60px 0;
    }
}

@media (max-width: 768px) {
    .container {
        max-width: 540px;
        padding: 0 15px;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    h3 {
        font-size: 1.2rem;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .card-content {
        padding: 20px;
    }
}

@media (max-width: 576px) {
    .container {
        max-width: 100%;
        padding: 0 15px;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    h2 {
        font-size: 1.3rem;
    }
    
    .section-header p {
        font-size: 1rem;
    }
    
    .card {
        margin-bottom: 20px;
    }
}