body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f4f9;
    margin: 0;
    padding: 0;
    color: #333;
}

.container {
    max-width: 960px;
    margin: auto;
    padding: 1rem;
    background: white;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    margin-top: 2rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

.subtitle {
    font-size: 1.2em;
    color: #777;
}

h1, h2 {
    color: #2c3e50;
}

a {
    color: #2980b9;
    text-decoration: none;
}

.portfolio-list {
    list-style: none;
    padding-left: 0;
}

.portfolio-list li {
    margin-bottom: 0.5rem;
}

footer {
    text-align: center;
    margin-top: 2rem;
    color: #aaa;
}

@media (max-width: 600px) {
    .container {
        padding: 1rem 0.5rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    .subtitle {
        font-size: 1rem;
    }
}