:root{--bg: #f4f6f9;--card: #ffffff;--text: #1a1d29;--muted: #6b7280;--accent: #3454d1;--accent-soft: #e8ecfd;--border: #e5e7eb}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Segoe UI,-apple-system,Roboto,Helvetica,Arial,sans-serif}