html,
body {
    height: 100%;
}

body {
    background-color: #f5f7fb;
}

.hero.is-dark {
    background: linear-gradient(135deg, #1f2937, #111827);
}

.card {
    box-shadow: 0 12px 30px rgba(17, 24, 39, 0.08);
}

.main-columns {
    width: 100%;
    max-width: 880px;
}