body{font:16px/1.5 system-ui,sans-serif;max-width:860px;margin:0 auto;padding:16px;
     color:#1d1d1f;background:#fafafa}
header{display:flex;justify-content:space-between;align-items:center;
       border-bottom:1px solid #ddd;margin-bottom:16px}
a{color:#0b57d0;text-decoration:none} a:hover{text-decoration:underline}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.card{background:#fff;border:1px solid #e3e3e3;border-radius:8px;padding:12px}
.price{font-weight:600} .low{color:#b3261e}
form{display:grid;gap:8px;max-width:320px}
input,button{font:inherit;padding:6px 8px}
footer{margin-top:24px;color:#777;font-size:13px}