body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica Neue,Arial}main{line-height:1.6}button{background:#000;color:#fff;border:0;border-radius:6px;cursor:pointer;padding:10px 12px}input,select{border:1px solid #ccc;border-radius:6px;padding:10px}a{color:#0b5cff}