:root{color-scheme:light;font-family:Arial,Helvetica,sans-serif}*{box-sizing:border-box}body{margin:0;background:#f4f7fb;color:#172033}a{color:inherit;text-decoration:none}.shell{min-height:100vh}.topbar{justify-content:space-between;align-items:center;padding:1rem 1.5rem;border-bottom:1px solid #dce3f0;background:#ffffff}.topbar,.topbar nav{display:flex;gap:1rem}.topbar a{font-weight:600}.content{max-width:1100px;margin:0 auto;padding:2rem 1.5rem 3rem}.hero{margin-bottom:2rem}.hero p,.muted{color:#5b667f;line-height:1.6}.grid{display:grid;gap:1rem}.grid.two{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.card{background:#ffffff;border:1px solid #dce3f0;border-radius:16px;padding:1.25rem}.card h2,.card h3{margin-top:0}.list{margin:0;padding-left:1rem;color:#5b667f}