body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: #f2f6ff;
}

header img {
    width: 100%;
    height: auto;
    display: block;
}

nav {
    background: #0f172a;
    padding: 15px;
    text-align: center;
}

nav a {
    color: white;
    margin: 0 15px;
    text-decoration: none;
    font-weight: 500;
}

nav a:hover {
    color: #38bdf8;
}

.hero {
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(to right, #1e3a8a, #2563eb);
    color: white;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: auto;
    padding: 50px 0;
}

.card {
    background: white;
    padding: 30px;
    margin: 20px 0;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
}

button {
    padding: 12px 25px;
    background: #22c55e;
    border: none;
    color: white;
    font-size: 15px;
    border-radius: 6px;
    cursor: pointer;
    margin-top: 15px;
}

button:hover {
    background: #16a34a;
}

footer {
    background: #0f172a;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}