:root {
            --primary: #004a59;
            --secondary: #020381;
            --accent: #02ab6c;
            --light: #f4f4f4;
            --dark: #090909;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: Arial, Helvetica Neue, sans-serif; line-height: 1.6; color: var(--dark); }
        header { background: #fff; padding: 1rem; border-bottom: 3px solid var(--primary); display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 1000; }
        .logo img { height: 60px; }
        nav ul { display: flex; list-style: none; gap: 15px; }
        nav a { text-decoration: none; color: var(--primary); font-weight: bold; font-size: 0.9rem; }
        .hero { background: url('/assets/conf-banner.jpg') center/cover no-repeat; height: 500px; display: flex; align-items: center; justify-content: center; color: white; text-align: center; }
        .container { max-width: 1200px; margin: auto; padding: 2rem; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
        .card { border-radius: 8px; overflow: hidden; box-shadow: 0 4px 6px rgba(0,0,0,0.1); border: 1px solid #ddd; }
        .card img { width: 100%; height: 200px; object-fit: cover; }
        .card-content { padding: 1rem; }
        footer { background: var(--primary); color: white; text-align: center; padding: 2rem; margin-top: 3rem; }
        @media (max-width: 768px) { nav ul { display: none; } .hero { height: 300px; } }