body{font-family:Inter,sans-serif;background-color:#f9fafb;margin:0}button{background-color:#2563eb;color:#fff;border:none;padding:10px 16px;border-radius:8px;cursor:pointer}button:hover{opacity:.9}.card{background:#fff;padding:16px;border-radius:12px;box-shadow:0 4px 12px #0000000d;margin-bottom:16px}