:root{--bg:#f7f7fb;--card:#fff}body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial;background:var(--bg);margin:0;color:#111}a{color:inherit}button,input,textarea{padding:8px;border:1px solid #ddd;border-radius:6px}button{cursor:pointer;background:#0b5fff;color:#fff;border:none}