body {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 1rem;
    line-height: 1.7;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #222;
}

header {
    background-color: #2c3e50;
    padding: 1.5rem 2rem;
    color: #fff;
}

h1 {
    font-size: 2rem;
    font-weight: bold;
    text-transform: uppercase;
    text-align: center;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.4);
    margin: 0;
}

h2 {
    font-size: 1.4rem;
    font-weight: bold;
    margin-top: 1.2rem;
    margin-bottom: 0.5rem;
}

p {
    font-size: 1rem;
    margin-bottom: 0.8rem;
}

ul {
    list-style-type: disc;
    list-style-position: outside;
    margin: 0.5rem 0 0.5rem 2rem;
}

ol {
    list-style-type: decimal;
    list-style-position: outside;
    margin: 0.5rem 0 0.5rem 2rem;
}

dl {
    margin: 0.5rem 0;
    padding: 0.5rem 1rem;
    border-left: 3px solid #2c3e50;
}

dt {
    font-weight: bold;
}

dd {
    margin-left: 1.5rem;
    font-style: italic;
}

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

a:hover {
    text-decoration: underline;
}

nav {
    background-color: #34495e;
    padding: 0.7rem 2rem;
}

nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 1.5rem;
}

nav a {
    text-decoration: none;
    color: #ecf0f1;
    font-weight: bold;
    text-transform: uppercase;
    font-size: 0.95rem;
}

nav a:hover {
    color: #f39c12;
}

main {
    max-width: 860px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

article {
    border: 1px solid #ccc;
    padding: 1.2rem;
    margin-bottom: 1.5rem;
    background-color: #fff;
}

section {
    margin-bottom: 1rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid #ddd;
}

blockquote {
    font-style: italic;
    border-left: 3px solid #2c3e50;
    padding: 0.5rem 1rem;
    margin: 1rem 0;
    color: #555;
}

.highlight {
    background-color: #fef9c3;
    padding: 0.3rem 0.6rem;
    border-radius: 3px;
    font-weight: bold;
}

#intro {
    font-size: 1.05rem;
    border-left: 3px solid #2c3e50;
    padding-left: 1rem;
    margin-bottom: 1rem;
}

nav a:visited {
    color: #bdc3c7;
}

main p a {
    font-weight: bold;
}

footer {
    background-color: #2c3e50;
    color: #ecf0f1;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
    font-size: 0.9rem;
}

footer a {
    color: #f39c12;
}

@media (max-width: 600px) {
    h1 {
        font-size: 1.5rem;
    }

    nav ul {
        flex-direction: column;
        gap: 0.5rem;
    }

    main {
        padding: 0 1rem;
    }
}