body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f4f6f8;
}

header {
    background: #0f172a;
    color: white;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

nav a {
    color: white;
    margin-left: 20px;
    text-decoration: none;
    font-weight: bold;
}

.hero {
    background: linear-gradient(120deg, #2563eb, #38bdf8);
    color: white;
    text-align: center;
    padding: 80px 20px;
}

.hero button {
    padding: 10px 20px;
    border: none;
    background: white;
    color: #2563eb;
    font-weight: bold;
    cursor: pointer;
    border-radius: 5px;
}

.features {
    display: flex;
    justify-content: center;
    gap: 20px;
    padding: 40px;
}

.card {
    background: white;
    padding: 20px;
    width: 200px;
    text-align: center;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

footer {
    background: #0f172a;
    color: white;
    text-align: center;
    padding: 10px;
}