.rules-aside{position:fixed;left:16px;top:88px;width:210px;padding:18px;border:2px solid #c8d8eb;border-radius:17px;background:#fff;box-shadow:0 12px 30px #17385c12;line-height:1.45;z-index:5}
.rules-aside strong{font-size:1.08rem}.rules-aside ol{margin:10px 0 0;padding-left:22px}.rules-aside li+li{margin-top:8px}.rules-aside b{color:#a1253b}
.game-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:28px}.game-grid .game-card{width:100%;height:100%;margin:0}.subtraction-icon{color:#e28620}.counter-readout{display:flex;align-items:baseline;justify-content:center;gap:9px}.counter-readout strong{font-size:3rem;color:#7040b8}.subtraction-board{min-height:220px;max-width:700px;margin:14px auto 22px;padding:22px;display:flex;align-content:center;justify-content:center;flex-wrap:wrap;gap:9px;border:2px solid #d4e0ee;border-radius:20px;background:#f7faff}.sub-counter{display:block;width:36px;height:36px;border-radius:50%;background:linear-gradient(145deg,#f6aa3a,#dc741c);box-shadow:inset 0 -4px #b95813;transition:opacity .4s,transform .4s}.sub-counter.removing{opacity:0;transform:translateY(-22px) scale(.4)}
@media(max-width:1400px){main{margin-left:245px;margin-right:12px;width:auto}}
@media(max-width:850px){.rules-aside{position:static;width:min(960px,calc(100% - 24px));margin:12px auto 0}.rules-aside ol{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.rules-aside li+li{margin-top:0}main{width:min(960px,calc(100% - 24px));margin:12px auto}}
@media(max-width:560px){.rules-aside ol{grid-template-columns:1fr;gap:5px}.rules-aside li+li{margin-top:3px}.game-grid{grid-template-columns:1fr}.subtraction-board{min-height:180px;padding:14px}.sub-counter{width:29px;height:29px}}