:root {
            --primary: #6eb48c;
            --dark: #313131;
            --light: #ffffff;
            --border: #eeeeee;
        }
        * { box-sizing: border-box; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; margin: 0; line-height: 1.6; color: var(--dark); }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        /* Header */
        header { border-bottom: 1px solid var(--border); padding: 20px 0; }
        .logo { max-width: 250px; display: block; }
        nav { margin-top: 20px; }
        nav ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 15px; }
        nav a { text-decoration: none; color: var(--dark); font-weight: 600; font-size: 0.9rem; text-transform: uppercase; }

        /* Hero */
        .hero { width: 100%; height: 400px; background-size: cover; background-position: center; display: flex; align-items: center; justify-content: center; position: relative; }
        .hero::after { content: ''; position: absolute; inset: 0; background: rgba(0,0,0,0.3); }
        .hero h1 { color: white; z-index: 1; position: relative; font-size: 3rem; }

        /* Content Grid */
        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; padding: 40px 0; }
        .article-card { border: 1px solid var(--border); padding: 20px; border-radius: 4px; }
        .article-card img { width: 100%; height: 200px; object-fit: cover; border-radius: 4px; display: block; margin-bottom: 15px; }
        
        /* Footer */
        footer { background: var(--dark); color: var(--light); padding: 40px 0; margin-top: 40px; text-align: center; }
        
        /* Responsive */
        @media (max-width: 768px) { .hero { height: 250px; } .hero h1 { font-size: 2rem; } }