body {
    background-color: #121212;
    color: #e0e0e0;
    font-family: 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

header {
    text-align: center;
    padding: 4rem 2rem;
}

h1 {
    font-size: 3rem;
    color: #ffffff;
    margin-bottom: 0.5rem;
    letter-spacing: 2px;
}

h2 {
    font-size: 1.5rem;
    color: #a0a0a0;
    font-weight: normal;
}

main {
    max-width: 800px;
    padding: 2rem;
}

#principles article {
    margin-bottom: 2.5rem;
    border-left: 3px solid #ff4500;
    padding-left: 1.5rem;
}

h3 {
    font-size: 1.8rem;
    color: #ff4500;
    margin-bottom: 0.5rem;
}

p {
    font-size: 1.1rem;
}

footer {
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
    font-style: italic;
    color: #a0a0a0;
}