:root{ --bg:#fff; --fg:#222; --muted:#6c757d; --border:#e5e7eb; }
html,body{background:var(--bg); color:var(--fg);}
.navbar, footer{background:#f8f9fa; border-bottom:1px solid var(--border);}
a{ color:#495057; }
.btn-primary{ background:#495057; border-color:#495057; }