:root{--bg: #f3f4f6;--panel: #ffffff;--border: #e5e7eb;--text: #111827;--muted: #6b7280;--accent: #10b981}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:Inter,system-ui,sans-serif;font-size:14px}