:root {
            --primary: #600000;
            --text: #1a1a1a;
            --bg: #fdfdfd;
            --font-body: Arial, sans-serif;
        }
        * { box-sizing: border-box; }
        body { font-family: var(--font-body); line-height: 1.6; color: var(--text); margin: 0; background-color: #ededed; }
        
        .container { max-width: 1000px; margin: 0 auto; background: var(--bg); padding: 20px; box-shadow: 0 0 10px rgba(0,0,0,0.1); }
        
        header { border-bottom: 2px solid var(--primary); padding-bottom: 20px; text-align: center; }
        .hero-banner { 
            width: 100%; height: 300px; 
            background: #d1d5db url('/assets/auction.jpg') center/cover;
            margin: 20px 0; border: 4px solid #fff; box-shadow: 0 4px 6px rgba(0,0,0,0.2);
        }
        
        nav { background: #333; padding: 10px; text-align: center; margin-bottom: 20px; }
        nav a { color: white; text-decoration: none; padding: 5px 10px; display: inline-block; font-size: 0.9em; }
        nav a:hover { text-decoration: underline; }
        
        .alert { background: var(--primary); color: white; padding: 15px; text-align: center; font-family: 'Courier New', monospace; font-weight: bold; margin: 10px 0; }
        
        .content-grid { display: grid; grid-template-columns: 1fr; gap: 30px; }
        @media (min-width: 768px) { .content-grid { grid-template-columns: 2fr 1fr; } }
        
        img.coin-deco { width: 120px; height: 120px; border-radius: 50%; border: 3px solid var(--primary); object-fit: cover; }
        
        footer { margin-top: 40px; padding: 20px; border-top: 1px solid #ccc; font-size: 0.8em; text-align: center; }
        
        h1, h2, h3 { color: var(--primary); }