.account-shell{max-width:1200px;margin:0 auto;padding:32px 16px}
.account-layout{display:grid;grid-template-columns:260px 1fr;gap:18px}
.account-sidebar{position:sticky;top:90px}
.account-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:16px}
.account-card{background:#fff;border:1px solid #eee;border-radius:16px;padding:16px}
.account-card .num{font-size:36px;font-weight:900}
@media (max-width:900px){
  .account-layout{grid-template-columns:1fr}
  .account-sidebar{position:relative;top:auto}
}