body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f6f7fb;
    color: #222;
}
.navigation {
    display: flex;
    align-items: center;
    background: #3f51b5;
    color: white;
    padding: 1rem 2rem;
}
.navigation h1 {
    margin: 0;
    font-size: 1.6rem;
}
.navigation ul {
    list-style: none;
    display: flex;
    margin: 0 0 0 2rem;
    padding: 0;
}
.navigation li {
    margin-right: 1.5rem;
}
.navigation a {
    color: white;
    text-decoration: none;
    transition: color 0.2s;
    font-weight: bold;
}
.navigation a:hover {
    color: #ffe082;
}
.content {
    display: flex;
    flex-direction: row;
    max-width: 1120px;
    margin: 2rem auto;
    gap: 2rem;
}
.block-editor, .site-preview {
    flex: 1;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(60,72,98,.07);
    padding: 1.5rem 2rem 2rem;
    min-width: 360px;
}
.block-editor h2, .site-preview h2 {
    font-size: 1.3rem;
    margin-top: 0;
}
.editor-content, .preview-content {
    margin-top: 1rem;
}