:root{--ink:#172026;--accent:#f6b800;--green:#11845b;--line:#e7ebef}
body{background:#f7f8fa;color:var(--ink)}
.hero{background:linear-gradient(120deg,#0f1720,#263340);color:white;padding:72px 0}
.product-card{background:white;border:1px solid var(--line);border-radius:8px;height:100%;transition:.15s}
.product-card:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,0,0,.08)}
.product-img{height:190px;object-fit:contain;background:#f2f4f6}
.ad-slot{border:1px dashed #cbd3dc;background:white;border-radius:8px;padding:16px;text-align:center}
.price{color:var(--green);font-weight:700}
.admin-sidebar{min-height:100vh;background:#172026}
.admin-sidebar a{color:#dce3ea;text-decoration:none;display:block;padding:.55rem .85rem;border-radius:6px}
.admin-sidebar a:hover,.admin-sidebar .active{background:#253443;color:white}
.whatsapp-float{position:fixed;right:18px;bottom:18px;background:#18a058;color:white;text-decoration:none;padding:12px 16px;border-radius:999px;box-shadow:0 8px 24px rgba(0,0,0,.2);z-index:50}
.spec-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px}
.spec-grid div{background:#fff;border:1px solid var(--line);border-radius:6px;padding:10px}