:root {
            --primary: #0074cc;
            --secondary: #003580;
            --accent: #009e0a;
            --dark: #112d4e;
            --light: #f4f4f4;
            --white: #ffffff;
        }
        body { font-family: Arial, sans-serif; line-height: 1.6; color: #333; margin: 0; }
        .art-header { background: var(--secondary); color: var(--white); padding: 20px; display: flex; flex-wrap: wrap; align-items: center; gap: 20px; }
        .art-logo { width: 96px; height: auto; }
        .art-nav { background: var(--primary); padding: 10px 0; }
        .art-nav ul { list-style: none; display: flex; padding: 0; margin: 0; justify-content: center; }
        .art-nav a { color: var(--white); text-decoration: none; padding: 10px 15px; font-weight: bold; }
        .art-sheet { max-width: 1200px; margin: 20px auto; padding: 0 20px; }
        .hero { background: #000; color: var(--white); padding: 60px 20px; text-align: center; border-radius: 8px; margin-bottom: 20px; }
        .service-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
        .card { border: 1px solid #ddd; padding: 15px; border-radius: 8px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
        .card img { max-width: 100px; float: right; margin-left: 10px; border-radius: 4px; }
        .art-footer { background: var(--dark); color: var(--white); padding: 40px 20px; text-align: center; }
        .btn { background: var(--accent); color: var(--white); padding: 10px 20px; text-decoration: none; border-radius: 4px; display: inline-block; }
        
        @media (max-width: 768px) {
            .art-nav ul { flex-direction: column; align-items: center; }
            .service-grid { grid-template-columns: 1fr; }
        }