:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji"}body{margin:0;background:#0b1020;color:#e8eefc}button{background:#182043;color:#e8eefc;border:1px solid #2a356a;border-radius:10px;padding:8px 10px;cursor:pointer}button:hover{filter:brightness(1.08)}.card{border:1px solid #24305f;background:#ffffff08;border-radius:16px;padding:14px}.muted{opacity:.75}.row{display:flex;gap:10px;align-items:center}.spacer{flex:1}