/* ===== zetap : BACKGROUND section ===== */
.background-section{padding:108px 0;position:relative;border-top:1px solid #ffe25c33}
.background-group+.background-group{margin-top:50px}
.group-label{display:flex;align-items:center;gap:15px;margin:0 0 18px;
  font:700 10px/1 var(--mono);letter-spacing:.18em;color:var(--mut)}
.group-label:before{content:"◆";color:var(--hot);font-size:8px}
.group-label:after{content:"";height:1px;background:var(--line);flex:1}
.background-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.background-card{display:grid;grid-template-columns:52% 48%;min-height:272px;
  background:linear-gradient(165deg,#1a1226,#120b1d);border:1px solid var(--line);
  overflow:hidden;transition:transform .25s,border-color .25s,box-shadow .25s}
.background-card:hover{transform:translateY(-5px);border-color:#ffe25c77;box-shadow:0 20px 44px -26px var(--hot)}
.background-card figure{margin:0;overflow:hidden;position:relative}
.background-card figure:after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,transparent 62%,#16101f)}
.background-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.background-card:hover img{transform:scale(1.045)}
.background-copy{padding:25px 24px 22px 12px;display:flex;flex-direction:column}
.background-copy small{font:700 9px/1.5 var(--mono);color:var(--accent);letter-spacing:.1em}
.background-copy h3{font:600 17px/1.55 var(--serif);margin:15px 0 10px}
.background-copy p{font-size:11px;line-height:1.7;color:var(--mut);margin:0}
.background-buy{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);
  padding-top:14px;margin-top:auto;font:700 19px/1 var(--mono)}
.background-buy span{font:700 9px/1 var(--mono);color:var(--hot);transition:.2s}
.background-card:hover .background-buy span{color:var(--accent);transform:translateX(3px)}
.style-badge{position:absolute;right:10px;top:10px;background:#0b0612dd;border:1px solid var(--accent);
  color:var(--accent);padding:5px 8px;font:700 8px/1 var(--mono);letter-spacing:.12em;z-index:2}
@media(max-width:900px){.background-grid{grid-template-columns:1fr}}
@media(max-width:560px){
  .background-card{grid-template-columns:1fr;min-height:0}
  .background-card figure{height:220px}
  .background-card figure:after{background:linear-gradient(0deg,#16101f,transparent 35%)}
  .background-copy{padding:20px}
}