/* Lightweight local Bootstrap-style helpers (no CDN). */
.container{max-width:1100px;margin:0 auto;padding:20px}
.row{display:flex;flex-wrap:wrap;margin:-8px}
.row>*{padding:8px}
.col-12{width:100%}
.col-6{width:50%}
.col-4{width:33.3333%}
.col-3{width:25%}
@media (max-width:900px){.col-6,.col-4,.col-3{width:100%}}
.btn-primary{}.btn-danger{}.btn-success{}.btn-warning{}