:root {
            --primary: #0082f3;
            --dark: #0a0f1a;
            --text: #222;
            --white: #fff;
        }
        * { box-sizing: border-box; }
        body { margin: 0; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; color: var(--text); line-height: 1.6; }
        header { display: flex; justify-content: space-between; align-items: center; padding: 20px 5%; background: var(--white); border-bottom: 1px solid #eee; }
        .logo-img { width: 120px; }
        nav a { margin-left: 20px; text-decoration: none; color: var(--text); font-weight: bold; }
        .hero { background: var(--dark); padding: 80px 5%; color: var(--white); text-align: center; }
        .container { max-width: 1200px; margin: 0 auto; padding: 40px 5%; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
        .product-card { border: 1px solid #ddd; padding: 20px; text-align: center; transition: 0.3s; }
        .product-card:hover { border-color: var(--primary); }
        .btn { display: inline-block; padding: 10px 25px; background: var(--primary); color: var(--white); text-decoration: none; margin-top: 10px; border-radius: 4px; }
        footer { background: #1a1a1a; color: #ccc; padding: 40px 5%; margin-top: 50px; }
        .footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; }
        .social-link { color: var(--white); margin-right: 15px; font-size: 24px; text-decoration: none; }
        @media (max-width: 768px) { nav { display: none; } }