:root {
        --primary: #005b9e;
        --secondary: #007cba;
        --dark: #011835;
        --light: #f4f5f6;
        --text: #333;
    }
    body { font-family: Arial, Helvetica, sans-serif; margin: 0; color: var(--text); background: #eee; }
    #art-main { max-width: 1000px; margin: 0 auto; background: #fff; padding: 20px; box-shadow: 0 0 10px rgba(0,0,0,0.1); }
    .art-header { background: var(--dark); padding: 40px; text-align: center; color: #fff; margin-bottom: 20px; }
    .art-logo-name a { color: #fff; text-decoration: none; font-size: 2em; }
    .art-nav { background: var(--primary); padding: 10px; }
    .art-hmenu { list-style: none; padding: 0; margin: 0; display: flex; justify-content: center; gap: 20px; }
    .art-hmenu a { color: #fff; text-decoration: none; font-weight: bold; }
    .art-content-layout { display: grid; grid-template-columns: 1fr; gap: 20px; padding: 20px; }
    @media (min-width: 768px) { .art-content-layout { grid-template-columns: 2fr 1fr; } }
    .gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 10px; margin-bottom: 30px; }
    .thumb { background: #ddd; aspect-ratio: 1; border: 2px solid #cfcfcf; }
    .art-footer { text-align: center; padding: 20px; border-top: 2px solid var(--primary); margin-top: 40px; font-size: 0.9em; }
    .social-icon { display: inline-block; width: 40px; height: 40px; background: var(--primary); border-radius: 5px; margin: 5px; vertical-align: middle; }
    hr { border: 0; border-top: 1px solid #ccc; margin: 20px 0; }