:root {
            --black: #000;
            --accent: #006da3;
            --white: #fff;
            --font: 'Arial', sans-serif;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: var(--font); color: var(--black); line-height: 1.6; }
        
        /* Header */
        .masthead { padding: 2rem; display: flex; justify-content: space-between; align-items: center; background: var(--white); position: relative; z-index: 100; }
        .logo-placeholder { font-weight: bold; font-size: 1.5rem; letter-spacing: 2px; }
        .nav-menu { display: flex; list-style: none; gap: 2rem; }
        .nav-menu a { text-decoration: none; color: var(--black); font-size: 0.9rem; text-transform: uppercase; }

        /* Hero */
        .hero { 
            height: 80vh; 
            background: linear-gradient(135deg, #004a59, #0074ad); 
            display: flex; 
            align-items: center; 
            justify-content: center; 
            color: var(--white);
            background-image: url('/assets/abt3.jpg');
            background-size: cover;
            background-position: center;
        }

        /* Content */
        .container { max-width: 1200px; margin: 0 auto; padding: 4rem 2rem; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
        .card { border: 1px solid #eee; padding: 1rem; transition: transform 0.3s; }
        .card:hover { transform: translateY(-5px); border-color: var(--accent); }
        .card img { width: 100%; height: 200px; object-fit: cover; border-radius: 4px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }

        /* Footer */
        footer { padding: 4rem 2rem; background: #f9f9f9; text-align: center; font-size: 0.8rem; }
        
        @media (max-width: 768px) {
            .nav-menu { display: none; }
            .hero { height: 50vh; }
        }