body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #0f172a;
    color: #f1f5f9;
}

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

header {
    background: #1e293b;
    padding: 20px 0;
    text-align: center;
}

.tagline {
    color: #94a3b8;
}

nav {
    background: #111827;
    padding: 10px 0;
}

.nav-links {
    display: flex;
    justify-content: center;
    gap: 25px;
}

nav a {
    color: #f1f5f9;
    text-decoration: none;
    font-weight: bold;
}

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

.hero {
    text-align: center;
    padding: 60px 0;
}

.hero button {
    padding: 10px 20px;
    font-size: 16px;
    background: #38bdf8;
    border: none;
    cursor: pointer;
    border-radius: 5px;
}

.cards {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin-bottom: 50px;
}

.card {
    background: #1e293b;
    padding: 25px;
    border-radius: 8px;
    width: 250px;
    text-align: center;
}

.about {
    padding: 40px 0;
    text-align: center;
    color: #cbd5e1;
}

footer {
    background: #111827;
    padding: 20px 0;
    text-align: center;
    font-size: 14px;
    color: #94a3b8;
}