:root{
  --chb-bg:#fff;
  --chb-border:#e5e7eb;
  --chb-primary:#111827;
  --chb-accent:#ff4d00;
  --chb-green:#10b981;
  --chb-muted:#6b7280;
}
.chb-grid{display:grid;gap:16px}
.chb-grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.chb-grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.chb-grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:900px){.chb-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.chb-grid{grid-template-columns:1fr}}

.chb-card{background:var(--chb-bg);border:1px solid var(--chb-border);border-radius:14px;overflow:hidden;box-shadow:0 2px 10px rgba(0,0,0,.04);transition:transform .15s ease}
.chb-card:hover{transform:translateY(-2px)}
.chb-thumb{position:relative;display:block;aspect-ratio:16/9;background:#f3f4f6}
.chb-thumb img{width:100%;height:100%;object-fit:cover}
.chb-discount{position:absolute;top:10px;left:10px;background:var(--chb-green);color:#fff;font-weight:700;border-radius:999px;padding:.32rem .6rem;font-size:.9rem}
.chb-expired{position:absolute;top:10px;right:10px;background:#ef4444;color:#fff;font-weight:700;border-radius:6px;padding:.32rem .5rem;font-size:.8rem}
.chb-body{padding:12px 14px}
.chb-title{margin:0 0 8px;font-size:1.05rem;line-height:1.25}
.chb-title a{color:var(--chb-primary);text-decoration:none}
.chb-prices{display:flex;gap:10px;align-items:baseline;margin-bottom:10px}
.chb-prices .now{font-weight:800}
.chb-prices .before{text-decoration:line-through;color:var(--chb-muted)}
.chb-actions .chb-btn{display:inline-block;background:var(--chb-accent);color:#fff;text-decoration:none;border-radius:10px;padding:.55rem .9rem;font-weight:800}
.chb-card.is-expired{opacity:.72}