.bt-game{max-width:40rem;margin:0 auto}.bt-head{text-align:center;margin-bottom:var(--space-16,1rem)}.bt-title{margin:0 0 var(--space-4,.25rem);color:var(--ff-ink);font-size:clamp(1.6rem,7vw,2.1rem)}.bt-tag{margin:0}.bt-chooser{gap:var(--space-8,.5rem);margin:0 auto var(--space-16,1rem);flex-wrap:wrap;justify-content:center;display:flex}.bt-lvl{border:3px solid var(--ff-line);background:var(--ff-card);min-width:56px;min-height:56px;color:var(--ff-ink);cursor:pointer;border-radius:1rem;justify-content:center;align-items:center;font-size:1.4rem;font-weight:900;transition:border-color .12s,transform 80ms;display:inline-flex}.bt-lvl:hover{border-color:var(--pc-select)}.bt-lvl:active{transform:translateY(1px)}.bt-lvl:focus-visible{outline:3px solid var(--ff-focus,var(--pc-select));outline-offset:2px}.bt-lvl--on{border-color:var(--pc-select);background:var(--pc-select-bg,var(--ff-warm))}.bt-lvl-emoji{line-height:1}.bt-goal{text-align:center;color:var(--ff-ink);margin:0 auto var(--space-8,.5rem);max-width:28rem;font-size:1.2rem;font-weight:800}.bt-stage{padding:var(--space-16,1rem)}.bt-grid{justify-content:center;gap:2px;margin:0 auto;display:flex}.bt-col{cursor:pointer;background:0 0;border:none;border-radius:.5rem;flex-direction:column;gap:2px;padding:0;transition:background-color .1s;display:flex}.bt-col:hover:not(:disabled){background:var(--pc-select-bg,color-mix(in srgb, var(--pc-select) 14%, transparent))}.bt-col:focus-visible{outline:3px solid var(--ff-focus,var(--pc-select));outline-offset:2px}.bt-col:disabled{cursor:default}.bt-cell{border-radius:.3rem;justify-content:center;align-items:center;width:clamp(2.1rem,9vw,2.8rem);height:clamp(2.1rem,9vw,2.8rem);font-size:clamp(1.2rem,5.5vw,1.7rem);line-height:1;display:flex}.bt-sky{background:color-mix(in srgb, var(--pc-select) 6%, transparent)}.bt-terrain,.bt-brick,.bt-flag,.bt-badger{background:0 0}.bt-hint{text-align:center;margin:var(--space-8,.5rem) auto 0;max-width:28rem}.bt-btns{gap:var(--space-16,1rem);margin:var(--space-16,1rem) auto 0;flex-wrap:wrap;justify-content:center;display:flex}.bt-visit{min-width:12rem;min-height:56px;font-size:1.2rem}.bt-clear{border:2px solid var(--ff-line);min-height:48px;color:var(--ff-ink);cursor:pointer;background:0 0;border-radius:.8rem;padding:.5rem 1rem;font-size:1rem;font-weight:700}.bt-clear:hover{border-color:var(--pc-select)}.bt-clear:focus-visible{outline:3px solid var(--ff-focus,var(--pc-select));outline-offset:2px}.bt-result{max-width:30rem;padding:var(--space-16,1rem);text-align:center;margin:var(--space-16,1rem) auto 0}.bt-result-head{color:var(--ff-ink);margin:0 0 var(--space-4,.25rem);font-size:1.3rem;font-weight:900}.bt-result-teach{color:var(--ff-ink);margin:0;font-weight:600}.bt-result--ok{border:3px solid var(--pc-select)}.bt-learn{max-width:42rem;margin:0 auto}.bt-h{margin:0 0 var(--space-16,1rem);color:var(--ff-ink);font-size:1.5rem}.bt-sub{margin:var(--space-16,1rem) 0 var(--space-4,.25rem);color:var(--ff-ink);font-size:1.15rem}.bt-list{margin:var(--space-8,.5rem) 0;padding-left:1.2rem}.bt-list li{margin:.3rem 0}.bt-back{margin-top:var(--space-24,1.5rem);font-weight:700}@media (prefers-reduced-motion:reduce){.bt-lvl,.bt-col{transition:none}}.bt-3d{justify-content:center;align-items:center;width:100%;min-height:clamp(14rem,46vw,20rem);display:flex}.bt-3d canvas{border-radius:.6rem;max-width:100%;height:auto}.bt-viewrow{gap:var(--space-8,.5rem);margin:var(--space-8,.5rem) auto 0;flex-wrap:wrap;justify-content:center;align-items:center;display:flex}.bt-view-toggle{cursor:pointer;border:2px solid var(--ff-line);background:var(--ff-card);min-height:44px;color:var(--ff-ink);border-radius:.8rem;padding:.5rem 1rem;font-size:1rem;font-weight:800;transition:border-color .12s}.bt-view-toggle:hover{border-color:var(--pc-select)}.bt-view-toggle[aria-pressed=true]{border-color:var(--pc-select);background:var(--pc-select-bg,var(--ff-warm))}.bt-view-toggle:focus-visible{outline:3px solid var(--ff-focus,var(--pc-select));outline-offset:2px}.bt-view-hint{max-width:18rem}@media (prefers-reduced-motion:reduce){.bt-view-toggle{transition:none}}.bt-templates{gap:var(--space-8,.5rem);margin:var(--space-8,.5rem) auto 0;flex-wrap:wrap;justify-content:center;align-items:center;display:flex}.bt-tpl-label{font-weight:800}.bt-tpl{cursor:pointer;border:2px solid var(--ff-line);background:var(--ff-card);min-height:48px;color:var(--ff-ink);border-radius:.8rem;align-items:center;gap:.4rem;padding:.4rem .9rem;font-size:1rem;font-weight:800;transition:border-color .12s,transform 80ms;display:inline-flex}.bt-tpl:hover{border-color:var(--pc-select)}.bt-tpl:active{transform:translateY(1px)}.bt-tpl:focus-visible{outline:3px solid var(--ff-focus,var(--pc-select));outline-offset:2px}.bt-tpl-emoji{font-size:1.2rem;line-height:1}@media (prefers-reduced-motion:reduce){.bt-tpl{transition:none}}.pc-theme-bricktots.pc-immersive{--pc-env-bg:radial-gradient(120% 90% at 50% 6%, #f9ece7 0%, #efccbe 42%, #0000 72%), linear-gradient(to bottom, #f6e2da 0%, #e7b29d 46%, #d98968 76%, #ce663b 100%);--pc-env-bg-dark:radial-gradient(120% 90% at 50% 6%, #3f1f12 0%, #28140b 46%, #0000 74%), linear-gradient(to bottom, #371c10 0%, #28140b 52%, #180c07 100%);--pc-env-bg-flat:oklab(85.701% .0368408 .0340436);--pc-env-bg-flat-dark:#28140b}.pc-theme-bricktots{--pc-select:#c2410c;--pc-select-bg:color-mix(in srgb, var(--pc-select) 12%, transparent);color:var(--ff-ink)}@media (prefers-color-scheme:dark){.pc-theme-bricktots{--pc-select:#fdba74}}