body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #0e1117;
    color: #e6e9f0;
}
header {
    background: url('../assets/img/hero.jpg') center/cover no-repeat;
    padding: 120px 20px;
    text-align: center;
}
header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
}
header p {
    max-width: 800px;
    margin: auto;
    font-size: 1.2rem;
}
section {
    padding: 80px 20px;
    max-width: 1200px;
    margin: auto;
}
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}
.card {
    background: #161b22;
    padding: 30px;
    border-radius: 12px;
}
footer {
    text-align: center;
    padding: 40px;
    background: #090b10;
    font-size: 0.9rem;
}