*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:#fafafa;color:#111;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.container{max-width:1200px;margin:0 auto;padding:2rem 1.5rem}.card{background:#fff;border:1px solid #eee;border-radius:12px;padding:1.25rem}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:1rem}.grid-2,.grid-3{display:grid;gap:1rem}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:1rem}.muted{color:#777}h1{margin-top:0}.nav{display:flex;gap:1rem;padding:1rem 1.5rem;border-bottom:1px solid #eee;background:#fff}.nav a{color:#555;font-weight:500}.nav a:hover{color:#000}