:root{--bg:#fafafa;--card:#fff;--ink:#222;--muted:#666;--primary:#7c4dff;--primary-ink:#fff;--border:#eaeaea}*{box-sizing:border-box}body,html{height:100%}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,Arial,Apple Color Emoji,Segoe UI Emoji;background:var(--bg);color:var(--ink)}