:root{--bg:#f6f7fa;--card:#ffffff;--text:#0f172a;--muted:#64748b;--brand:#2563eb;--brand2:#22c55e;--line:#e5e7eb;--danger:#dc2626;--ok:#15803d;--link:#1d4ed8}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,Segoe UI,Roboto,Arial;background:var(--bg);color:var(--text)}a{color:var(--link);text-decoration:none}