:root{--maxw: 900px;--pad: 16px}html,body,#root{height:100%;margin:0}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Arial,"Apple Color Emoji","Segoe UI Emoji"}.container{max-width:var(--maxw);margin:0 auto;padding:var(--pad)}.hstack{display:flex;gap:8px;align-items:center}.vstack{display:flex;flex-direction:column;gap:12px}.card{border:1px solid #e3e3e3;border-radius:12px;padding:16px;box-shadow:0 1px 2px #0000000a}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace}.small{font-size:12px;color:#666}