:root {
            --primary: #0066CC;
            --secondary: #004a59;
            --dark: #000;
            --light: #fff;
            --gray: #eaeaea;
            --text: #333;
        }

        body { font-family: Helvetica, Arial, sans-serif; line-height: 1.6; color: var(--text); margin: 0; padding: 0; }
        header { background: var(--light); padding: 1rem; border-bottom: 3px solid var(--primary); display: flex; justify-content: space-between; align-items: center; }
        .logo { width: 200px; }
        nav ul { list-style: none; display: flex; gap: 15px; padding: 0; flex-wrap: wrap; }
        nav a { text-decoration: none; color: var(--primary); font-weight: bold; font-size: 14px; }
        
        .hero { background-image: url('/assets/ST2HN-1024x640.png'); background-size: cover; background-position: center; height: 400px; display: flex; align-items: center; justify-content: center; color: var(--light); text-shadow: 2px 2px 4px rgba(0,0,0,0.5); }
        
        .container { max-width: 1200px; margin: 0 auto; padding: 20px; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
        .card { padding: 20px; border: 1px solid var(--gray); border-radius: 4px; }
        
        button { background: var(--primary); color: white; border: none; padding: 10px 20px; cursor: pointer; }
        footer { background: var(--dark); color: white; text-align: center; padding: 20px; margin-top: 40px; }

        @media (max-width: 768px) { nav ul { flex-direction: column; } }