body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f7f9fa;
    color: #222;
}
header {
    background: #1a237e;
    color: #fff;
    padding: 1.5rem 0 1rem 0;
    text-align: center;
}
nav ul {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0 0;
    display: flex;
    justify-content: center;
    gap: 2rem;
}
nav a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}
nav a:hover {
    color: #ffb300;
}
main {
    max-width: 900px;
    margin: 2rem auto;
    padding: 1rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(30,40,90,0.08);
}
.hero {
    text-align: center;
    margin-bottom: 2rem;
}
.features {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
}
.feature {
    flex: 1 1 300px;
    background: #e3e7f1;
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 1px 4px rgba(30,40,90,0.06);
}
.feature img {
    width: 80px;
    height: 80px;
    margin-bottom: 1rem;
}
.tech-list {
    list-style: none;
    padding: 0;
}
.tech-list li {
    margin-bottom: 2rem;
    background: #f1f3fa;
    border-radius: 6px;
    padding: 1rem 1.5rem;
    box-shadow: 0 1px 3px rgba(30,40,90,0.04);
}
footer {
    text-align: center;
    padding: 1.5rem 0 1rem 0;
    background: #1a237e;
    color: #fff;
    margin-top: 2rem;
    border-radius: 0 0 8px 8px;
}
@media (max-width: 700px) {
    .features {
        flex-direction: column;
        gap: 1rem;
    }
    main {
        padding: 0.5rem;
    }
}