:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --background-color: #f5f6fa;
    --text-color: #2c3e50;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
 
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
 
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}
 
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
 
.main-header {
    text-align: center;
    padding: 40px 0;
}
 
.logo {
    max-width: 200px;
    margin-bottom: 20px;
}
 
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    padding: 20px 0;
}
 
.grid-item {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease;
    box-shadow: var(--shadow);
}
 
.grid-item:hover {
    transform: translateY(-5px);
}
 
.grid-item i {
    font-size: 40px;
    color: var(--secondary-color);
    margin-bottom: 20px;
}
 
.grid-item h2 {
    margin-bottom: 15px;
    color: var(--primary-color);
}
 
.grid-item p {
    margin-bottom: 20px;
    color: #666;
}
 
.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--secondary-color);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}
 
.btn:hover {
    background-color: var(--primary-color);
}
 
/* Responsive */
@media (max-width: 768px) {
    .grid-container {
        grid-template-columns: 1fr;
    }
}