body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7;
    color: #111;
    background-color: #fff;
}

/* Layout */
header, footer {
    background-color: #f4f4f4;
    padding: 1rem 2rem;
    text-align: center;
}

h1, h2, h3 {
    color: #1a1a1a;
}

main {
    padding: 2rem;
    max-width: 960px;
    margin: auto;
}

ul, ol {
    padding-left: 1.5rem;
    margin-bottom: 1.5rem;
}

section {
    margin-bottom: 3rem;
}

/* Links */
a {
    color: #0077cc;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Images */
img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1.5rem auto;
    border-radius: 10px;
}

/* FAQ */
details {
    background-color: #f9f9f9;
    padding: 1rem;
    margin: 1rem 0;
    border-left: 4px solid #0077cc;
}

summary {
    font-weight: bold;
    cursor: pointer;
}

/* Accessibility & CLS */
img[alt] {
    font-size: 0;
}

/* Footer */
footer {
    font-size: 0.9rem;
    color: #666;
}

/* Responsive */
@media (max-width: 600px) {
    body {
        font-size: 1rem;
    }

    main {
        padding: 1rem;
    }
}