:root {
            --primary: #e13131;
            --secondary: #fabf1e;
            --dark: #0f0f0f;
            --text: #262626;
            --white: #ffffff;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: 'Prompt', -apple-system, sans-serif; color: var(--text); line-height: 1.6; }
        
        header { background: var(--dark); color: var(--white); padding: 1rem; 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: 20px; }
        nav a { color: var(--white); text-decoration: none; font-weight: 500; }
        
        .hero { 
            width: 100%; height: 500px; 
            background-image: url('/assets/Banner-love-life-Collagen-1024x576.jpg'); 
            background-size: cover; background-position: center;
            display: flex; align-items: center; justify-content: center;
        }
        
        .container { max-width: 1200px; margin: 0 auto; padding: 2rem; }
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; }
        
        .card { border: 1px solid #eee; padding: 1rem; text-align: center; border-radius: 8px; transition: 0.3s; }
        .card img { max-width: 100%; border-radius: 4px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
        .card h3 { margin: 1rem 0; }

        .btn { padding: 0.8rem 1.5rem; background: var(--primary); color: white; text-decoration: none; display: inline-block; border-radius: 5px; }
        
        footer { background: var(--dark); color: white; text-align: center; padding: 2rem; margin-top: 2rem; }

        @media (max-width: 768px) {
            nav { display: none; }
        }