:root{color-scheme:light}body{margin:0;background:#fff;color:#1f2430;font-family:Segoe UI,Roboto,system-ui,sans-serif}button{padding:8px 14px;border:1px solid #1a2332;background:#1a2332;color:#fff;border-radius:6px;cursor:pointer}button:disabled{opacity:.5;cursor:not-allowed}input{border:1px solid #c8cfdb;border-radius:6px;padding:8px}