* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

header {
    background: #333;
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.nav-links {
    list-style: none;
    display: flex;
}

.nav-links li {
    margin-left: 20px;
}

.nav-links a {
    color: white;
    text-decoration: none;
}

.hero {
    height: 60vh;
    background: #f4f4f4;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    margin-top: 60px; /* Espacio para el header fijo */
}

.container {
    padding: 50px 20px;
    text-align: center;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.card {
    background: white;
    border: 1px solid #ddd;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 20px 0;
}