.memory{border:1px solid var(--line);border-radius:16px;background:#fff;padding:16px;margin:12px 0}
.mem-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:10px}
.mem-card{position:relative;height:78px;border:1px solid var(--line);border-radius:12px;cursor:pointer;transform-style:preserve-3d;transition:.25s}
.mem-card.is-open{transform:rotateY(180deg)}
.mem-face{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;border-radius:12px;backface-visibility:hidden}
.mem-front{background:#f8fafc;color:#64748b}
.mem-back{transform:rotateY(180deg);background:#fff}
.mem-card.matched{opacity:.6;pointer-events:none}
.mem-stats{display:flex;gap:10px;align-items:center;margin-top:8px;color:#64748b;font-size:.95rem}
.mem-cta{margin-top:8px}
.mem-cta button{border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 12px;cursor:pointer}
@media (min-width:960px){ .mem-grid{grid-template-columns:repeat(6,1fr)} .mem-card{height:88px} }