:root{--color: #0f172a;--footer-color: #475569;--link-color: #2563eb;--link-hover: #1d4ed8;--muted: #64748b;--error-color: #b91c1c;--border-color: #e2e8f0;--card-bg: #ffffff;--shadow: 0 1px 2px rgba(0,0,0,.06);--shadow-hover: 0 4px 6px rgba(0,0,0,0,.1), 0 1px 3px rgba(0,0,0,.06);--header-h: 64px}html,body{height:100%}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";color:#0f172a}