body {
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
    background: #f5f7fb;
    color: #222;
}

header {
    background: linear-gradient(120deg, #007BFF, #00c6ff);
    color: white;
    padding: 50px 20px;
    text-align: center;
}

nav {
    background: white;
    padding: 15px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

nav a {
    margin: 0 12px;
    text-decoration: none;
    color: #333;
    font-weight: 600;
}

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

.card {
    background: white;
    padding: 20px;
    margin: 15px 0;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

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

.btn {
    display: inline-block;
    background: #ff7a18;
    color: white;
    padding: 10px 15px;
    border-radius: 6px;
    text-decoration: none;
    margin-top: 10px;
}

footer {
    background: #111;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}

.small {
    font-size: 0.9em;
    opacity: 0.8;
}