body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: #f4f6f9;
    color: #1f2937;
}

.topbar {
    background: #0b1220;
    color: white;
    padding: 8px 20px;
    font-size: 13px;
}

.navbar {
    background: white;
    display: flex;
    justify-content: space-between;
    padding: 15px 40px;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
}

.navbar a {
    margin: 0 12px;
    text-decoration: none;
    color: #111827;
    font-weight: 500;
}

.navbar a:hover {
    color: #0ea5e9;
}

.hero {
    background: linear-gradient(120deg,#0ea5e9,#1e3a8a);
    color: white;
    padding: 90px 40px;
    border-radius: 14px;
    margin: 20px;
}

.container {
    padding: 20px 40px;
}

.card {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    margin: 20px 0;
}

.footer {
    background: #0b1220;
    color: white;
    padding: 30px;
    text-align: center;
    margin-top: 50px;
}