:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}*{box-sizing:border-box}body{color:#0f172a;background:linear-gradient(#f7fbff 0%,#edf5ff 100%);margin:0;font-family:IBM Plex Sans,Segoe UI,sans-serif}main{max-width:980px;margin:0 auto;padding:32px 20px}.card{background:#fff;border:1px solid #dbe7ff;border-radius:14px;padding:16px}.input,button{border:1px solid #b6ccff;border-radius:10px;padding:10px 12px}button{cursor:pointer;color:#fff;background:#1d4ed8;font-weight:600}