*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--bg:#f8fafc;--surface:#ffffff;--border:#e2e8f0;--text:#1e293b;--text-muted:#64748b;--primary:#2563eb;--primary-hover:#1d4ed8;--danger:#dc2626;--radius:8px}body{font-family:system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}a{color:inherit;text-decoration:none}