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

body {
    background-color: #f4f6f8;
    color: #333;
    line-height: 1.6;
}

.hero {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: white;
    text-align: center;
    padding: 60px 20px;
}

.hero h1 {
    font-size: 2.8rem;
}

.hero p {
    font-size: 1.2rem;
}

.subtitle {
    opacity: 0.9;
    margin-top: 10px;
}

.navbar {
    background-color: #ffffff;
    padding: 12px 0;
    display: flex;
    justify-content: center;
    gap: 25px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.navbar a {
    text-decoration: none;
    color: #1e3c72;
    font-weight: 600;
}

.navbar a:hover {
    color: #2a5298;
}

.container {
    max-width: 1100px;
    margin: 40px auto;
    padding: 0 20px;
}

.card {
    background: #ffffff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    margin-bottom: 30px;
}

.card h2,
.card h3 {
    margin-bottom: 10px;
    color: #1e3c72;
}

.card.small {
    text-align: center;
}

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

.btn {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 18px;
    background-color: #1e3c72;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
}

.btn:hover {
    background-color: #2a5298;
}

footer {
    text-align: center;
    padding: 20px;
    background-color: #ffffff;
    margin-top: 40px;
    box-shadow: 0 -2px 6px rgba(0,0,0,0.08);
}