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

body {
    background-color: #f4f4f4;
    color: #333;
    line-height: 1.6;
}

/* Header */
header {
    background-color: #2e2e2e;
    color: white;
    text-align: center;
    padding: 50px 20px;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
}

header p {
    font-size: 1.1em;
    color: #cccccc;
}

/* Main */
main {
    max-width: 1000px;
    margin: 40px auto;
    padding: 0 20px;
}

.intro {
    margin-bottom: 50px;
}

.intro h2 {
    margin-bottom: 15px;
    color: #444;
}

/* Navigation cards */
.navigation h2 {
    margin-bottom: 30px;
    text-align: center;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
}

.card {
    background-color: white;
    padding: 25px;
    border-radius: 8px;
    text-decoration: none;
    color: #333;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card h3 {
    margin-bottom: 10px;
}

.card p {
    font-size: 0.95em;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 18px rgba(0,0,0,0.15);
}

/* Footer */
footer {
    text-align: center;
    padding: 20px;
    background-color: #2e2e2e;
    color: white;
    margin-top: 60px;
}