.expansion-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr)); gap:24px; }
.expansion-card { padding:24px; border:1px solid var(--color-border,#dce2e8); border-radius:16px; background:var(--color-surface,#fff); }
.expansion-card h2 { margin:0 0 16px; font-size:1.2rem; }
.expansion-card .history-balls { display:flex; flex-wrap:wrap; gap:6px; margin-bottom:16px; }
.expansion-note { color:var(--color-text-muted,#667085); font-size:.9rem; line-height:1.7; }
.expansion-source { display:inline-block; margin:12px 0; }
.expansion-matrix { font-weight:600; }
.expansion-table-wrap { width:100%; overflow-x:auto; margin:20px 0; }
.expansion-history { width:100%; border-collapse:collapse; }
.expansion-history th,.expansion-history td { padding:14px 10px; text-align:left; border-bottom:1px solid var(--color-border,#dce2e8); }
.expansion-history td:last-child { min-width:270px; }
.expansion-history .lotto-ball { margin:3px; }
.expansion-back { display:inline-block; margin-bottom:20px; }
@media(max-width:600px) { .expansion-card { padding:18px; } .expansion-history th,.expansion-history td { padding:10px 6px; font-size:.85rem; } }