.lat-hero{text-align:center}.lat-hud{justify-content:center;align-items:center;gap:.6rem;margin-top:.3rem;display:flex}.lat-section-h{text-align:center;margin:1.4rem 0 .6rem}.lat-activity-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:.8rem;display:grid}.lat-activity-card{background:var(--ff-paper);border:3px solid var(--ff-outline);box-shadow:4px 4px 0 var(--ff-outline);color:var(--ff-anvil);border-top:6px solid var(--pc-select);border-radius:14px;flex-direction:column;gap:.25rem;min-height:92px;padding:1rem;text-decoration:none;display:flex}.lat-activity-card:hover{box-shadow:5px 5px 0 var(--ff-outline);transform:translate(-1px,-1px)}.lat-activity-emoji{font-size:1.8rem}.lat-activity-card strong{font-size:1.1rem}.lat-activity-blurb{color:var(--ff-anvil);opacity:.85;font-size:.9rem}.lat-stage{flex-direction:column;justify-content:center;align-items:center;gap:1.1rem;min-height:200px;display:flex}.lat-board{--lat-u:clamp(56px, 11vmin, 88px);grid-template-columns:repeat(4, var(--lat-u));grid-template-rows:repeat(4, var(--lat-u));background:var(--ff-outline);border:3px solid var(--ff-outline);border-radius:8px;gap:0;display:grid;overflow:hidden}.lat-cell{width:var(--lat-u,56px);height:var(--lat-u,56px);font-variant-numeric:tabular-nums;background:var(--ff-paper);color:var(--ff-forge-text,var(--ff-anvil));border:1px solid var(--ff-outline);cursor:pointer;font-size:clamp(1.7rem,3.4vmin,2.3rem);font-weight:800}.lat-cell--bl{border-left:3px solid var(--ff-outline)}.lat-cell--bt{border-top:3px solid var(--ff-outline)}.lat-cell--given{color:var(--ff-anvil);background:var(--ff-warm);cursor:default}.lat-cell--sel{outline:3px solid var(--pc-select);outline-offset:-3px}.lat-cell--bad{background:var(--pc-incorrect-bg);color:var(--pc-incorrect)}.lat-cell:disabled{cursor:default}.lat-board--kk .lat-cell{justify-content:center;align-items:center;display:flex;position:relative}.lat-cell-val{line-height:1}.lat-cell--cr{border-right:3px solid var(--ff-outline)}.lat-cell--cb{border-bottom:3px solid var(--ff-outline)}.lat-cage-label{color:var(--ff-anvil);font-variant-numeric:tabular-nums;pointer-events:none;font-size:.6rem;font-weight:700;line-height:1;position:absolute;top:2px;left:3px}.lat-pad{flex-wrap:wrap;justify-content:center;gap:.5rem;display:flex}.lat-padkey{font-variant-numeric:tabular-nums;background:var(--ff-warm);min-width:52px;min-height:52px;color:var(--ff-anvil);border:3px solid var(--ff-outline);box-shadow:2px 2px 0 var(--ff-outline);cursor:pointer;border-radius:12px;font-size:1.5rem;font-weight:800}.lat-padkey:hover{transform:translate(-1px,-1px)}.lat-padkey--erase{color:var(--ff-forge-text,var(--ff-anvil))}.lat-kit-list{gap:.6rem;display:grid}.lat-nono{-webkit-user-select:none;user-select:none;flex-direction:column;gap:0;display:inline-flex}.lat-nono-head{display:flex}.lat-nono-corner{flex:0 0 3.2rem;width:3.2rem}.lat-nono-colclue{width:44px;min-height:3.2rem;color:var(--ff-anvil);font-variant-numeric:tabular-nums;flex-direction:column;flex:0 0 44px;justify-content:flex-end;align-items:center;gap:1px;padding-bottom:3px;font-size:.95rem;font-weight:800;line-height:1;display:flex}.lat-nono-row{align-items:stretch;display:flex}.lat-nono-rowclue{width:3.2rem;min-height:44px;color:var(--ff-anvil);font-variant-numeric:tabular-nums;flex:0 0 3.2rem;justify-content:flex-end;align-items:center;gap:4px;padding-right:6px;font-size:.95rem;font-weight:800;display:flex}.lat-nc{border:1px solid var(--ff-outline);background:var(--ff-paper);cursor:pointer;flex:0 0 44px;justify-content:center;align-items:center;width:44px;height:44px;padding:0;display:flex}.lat-nc:hover{background:color-mix(in oklab, var(--pc-select) 12%, var(--ff-paper))}.lat-nc--fill{background:var(--pc-select);border-color:var(--pc-select)}.lat-nc--fill:hover{background:var(--pc-select)}.lat-nc-mark{color:var(--ff-anvil);font-size:1.1rem;font-weight:800;line-height:1}.lat-nc--cross{background:var(--ff-warm)}.lat-board--fut{--lat-u:clamp(46px, 8.4vmin, 66px);--lat-gap:calc(var(--lat-u) * .48);grid-template-columns:var(--lat-u) var(--lat-gap) var(--lat-u) var(--lat-gap) var(--lat-u) var(--lat-gap) var(--lat-u);grid-template-rows:var(--lat-u) var(--lat-gap) var(--lat-u) var(--lat-gap) var(--lat-u) var(--lat-gap) var(--lat-u);justify-content:center;align-items:center;display:grid}.lat-board--fut .lat-cell{width:var(--lat-u);height:var(--lat-u);border:2px solid var(--ff-outline);background:var(--ff-paper);color:var(--ff-anvil);cursor:pointer;border-radius:4px;justify-content:center;align-items:center;padding:0;font-size:1.25rem;font-weight:800;display:flex}.lat-board--fut .lat-cell--given{background:var(--ff-warm);cursor:default}.lat-board--fut .lat-cell--sel{outline:3px solid var(--pc-select);outline-offset:-3px}.lat-board--fut .lat-cell--bad{background:var(--pc-incorrect-bg);color:var(--pc-incorrect)}.lat-board--fut .lat-cell:disabled{cursor:default}.lat-fut-sign{color:var(--pc-select);justify-content:center;align-items:center;font-size:1.2rem;font-weight:800;line-height:1;display:flex}.lat-board--kak{--lat-u:clamp(46px, 8.4vmin, 68px);background:var(--ff-outline);border:3px solid var(--ff-outline);border-radius:8px;justify-content:center;gap:0;display:grid;overflow:hidden}.lat-board--kak .lat-cell{width:var(--lat-u);height:var(--lat-u);border:1px solid var(--ff-outline);background:var(--ff-paper);cursor:pointer;color:var(--ff-anvil);justify-content:center;align-items:center;padding:0;font-size:clamp(1.25rem,2.6vmin,1.7rem);font-weight:800;display:flex}.lat-board--kak .lat-cell--sel{outline:3px solid var(--pc-select);outline-offset:-3px}.lat-board--kak .lat-cell--bad{background:var(--pc-incorrect-bg);color:var(--pc-incorrect)}.lat-board--kak .lat-cell:disabled{cursor:default}.lat-kak-wall{width:var(--lat-u,46px);height:var(--lat-u,46px);background:#33313a;border:1px solid #26242c;position:relative}.lat-kak-clue{overflow:hidden}.lat-kak-diag{background:linear-gradient(to bottom right,#0000 calc(50% - .75px),#8a8594 calc(50% - .75px) calc(50% + .75px),#0000 calc(50% + .75px));position:absolute;inset:0}.lat-kak-a{color:#f3efe9;font-size:.72rem;font-weight:800;line-height:1;position:absolute;top:1px;right:4px}.lat-kak-d{color:#f3efe9;font-size:.72rem;font-weight:800;line-height:1;position:absolute;bottom:1px;left:4px}.lat-board--sky{--lat-u:clamp(46px, 8.4vmin, 66px);--lat-edge:calc(var(--lat-u) * .65);grid-template-columns:var(--lat-edge) repeat(4, var(--lat-u)) var(--lat-edge);grid-template-rows:var(--lat-edge) repeat(4, var(--lat-u)) var(--lat-edge);justify-content:center;align-items:center;display:grid}.lat-board--sky .lat-cell{width:var(--lat-u);height:var(--lat-u);border:2px solid var(--ff-outline);background:var(--ff-paper);color:var(--ff-anvil);cursor:pointer;border-radius:4px;justify-content:center;align-items:center;padding:0;font-size:clamp(1.25rem,2.6vmin,1.7rem);font-weight:800;display:flex}.lat-board--sky .lat-cell--sel{outline:3px solid var(--pc-select);outline-offset:-3px}.lat-board--sky .lat-cell--bad{background:var(--pc-incorrect-bg);color:var(--pc-incorrect)}.lat-board--sky .lat-cell:disabled{cursor:default}.lat-sky-clue{color:var(--pc-select);justify-content:center;align-items:center;font-size:clamp(1rem,2vmin,1.35rem);font-weight:800;line-height:1;display:flex}.lat-sky-corner{width:var(--lat-edge,30px);height:var(--lat-edge,30px)}.lat-board--bin{background:var(--ff-outline);border:3px solid var(--ff-outline);border-radius:8px;grid-template-rows:repeat(6,46px);grid-template-columns:repeat(6,46px);justify-content:center;gap:0;display:grid;overflow:hidden}.lat-board--bin .lat-cell{border:1px solid var(--ff-outline);background:var(--ff-paper);cursor:pointer;width:46px;height:46px;color:var(--ff-anvil);justify-content:center;align-items:center;padding:0;font-size:1.3rem;font-weight:800;display:flex}.lat-bin--0{background:var(--ff-warm);color:var(--ff-anvil)}.lat-bin--1{background:color-mix(in oklab, var(--pc-select) 22%, var(--ff-paper));color:var(--pc-select)}.lat-board--bin .lat-cell--given{box-shadow:inset 0 0 0 2px var(--ff-outline);cursor:default;font-weight:900}.lat-board--bin .lat-cell--bad{background:var(--pc-incorrect-bg);color:var(--pc-incorrect)}.lat-board--bin .lat-cell:disabled{cursor:default}.lat-md-grid{--lat-u:clamp(52px, 10vmin, 84px);grid-template-columns:repeat(4, var(--lat-u));grid-template-rows:repeat(4, var(--lat-u));border:3px solid var(--ff-outline);border-radius:8px;justify-content:center;gap:0;width:max-content;margin:.75rem auto;display:grid;overflow:hidden}.lat-md-cell{width:var(--lat-u,52px);height:var(--lat-u,52px);border:1px solid var(--ff-outline);background:var(--ff-paper);color:var(--ff-anvil);font-variant-numeric:tabular-nums;justify-content:center;align-items:center;font-size:clamp(1.5rem,3vmin,2.1rem);font-weight:800;display:flex}.lat-md-cell:nth-child(4n+3){border-left:3px solid var(--ff-outline)}.lat-md-cell:nth-child(n+9):nth-child(-n+12){border-top:3px solid var(--ff-outline)}.lat-md-cell--target{background:color-mix(in oklab, var(--pc-select) 14%, var(--ff-paper));outline:3px dashed var(--pc-select);outline-offset:-3px;color:var(--pc-select)}.lat-md-cell--solved{background:color-mix(in oklab, var(--pc-select) 22%, var(--ff-paper));color:var(--pc-select)}.lat-predict-q{color:var(--ff-anvil);text-align:center;margin:.75rem 0 .5rem;font-size:1.1rem;font-weight:800}.lat-predict-opts{flex-wrap:wrap;justify-content:center;gap:.5rem;display:flex}.lat-predict-opt{font-variant-numeric:tabular-nums;min-width:56px;min-height:52px;font-size:1.4rem;font-weight:800}.lat-predict-opt--correct{background:color-mix(in oklab, var(--pc-select) 26%, var(--ff-paper));border-color:var(--pc-select);color:var(--pc-select)}.lat-predict-opt--wrong{background:var(--pc-incorrect-bg);border-color:var(--pc-incorrect);color:var(--pc-incorrect)}.lat-rush-intro,.lat-rush-stage,.lat-rush-result{text-align:center}.lat-rush-title{color:var(--ff-anvil);margin:.25rem 0 .5rem;font-size:1.4rem;font-weight:800}.lat-rush-start{min-height:48px;margin-top:.5rem;padding-inline:2rem}.lat-rush-hud{font-variant-numeric:tabular-nums;width:100%;color:var(--ff-anvil);justify-content:space-between;align-self:stretch;align-items:baseline;margin-bottom:.4rem;font-weight:800;display:flex}.lat-rush-score{font-size:1.15rem}.lat-rush-time{color:var(--pc-select);font-size:1.15rem}.lat-rush-bar{background:color-mix(in oklab, var(--ff-outline) 30%, var(--ff-paper));border-radius:6px;align-self:stretch;width:100%;height:8px;overflow:hidden}.lat-rush-bar-fill{background:var(--pc-select);height:100%;transition:width 1s linear}.lat-rush-bar-fill--low{background:var(--pc-incorrect)}.lat-rush-board{margin:.5rem 0}.lat-rush-final{color:var(--pc-select);margin:.5rem 0;font-size:1.25rem;font-weight:800}.lat-rush-actions{flex-wrap:wrap;justify-content:center;gap:.6rem;margin-top:.75rem;display:flex}@media (prefers-reduced-motion:reduce){.lat-rush-bar-fill{transition:none}}.pc-theme-latticeforge.pc-immersive{--pc-env-bg:url(/play/latticeforge/env.webp) center / cover no-repeat, linear-gradient(to bottom, #eceadb 0%, #e4e6cf 28%, #dce2c8 62%, #d6dfc3 88%, #d2dcbf 100%);--pc-env-bg-dark:url(/play/latticeforge/env-dark.webp) center / cover no-repeat, linear-gradient(to bottom, #0f1410 0%, #121812 42%, #0f150e 74%, #0d120c 100%);--pc-env-bg-flat:url(/play/latticeforge/env.webp) center / cover no-repeat, oklab(91.0047% -.0134178 .0297834);--pc-env-bg-flat-dark:url(/play/latticeforge/env-dark.webp) center / cover no-repeat, #12180f}.lat-kits{margin:.4rem 0 1rem}.lat-kits-summary{cursor:pointer;color:var(--ff-anvil);flex-wrap:wrap;align-items:center;gap:.5rem;font-size:1.05rem;font-weight:800;list-style:none;display:flex}.lat-kits-summary::-webkit-details-marker{display:none}.lat-kits-summary:before{content:"▸";color:var(--pc-select);font-weight:800}.lat-kits[open] .lat-kits-summary:before{content:"▾"}@media (aspect-ratio>=1) and (width>=1000px){.pc-theme-latticeforge.pc-immersive{--lat-u:clamp(52px, calc((100dvh - 540px) / 6), 84px);--lat-g:calc(var(--lat-u) * .48)}.pc-theme-latticeforge.pc-immersive .lat-board{grid-template-columns:repeat(4, var(--lat-u));grid-template-rows:repeat(4, var(--lat-u))}.pc-theme-latticeforge.pc-immersive .lat-cell{width:var(--lat-u);height:var(--lat-u);font-size:calc(var(--lat-u) * .5)}.pc-theme-latticeforge.pc-immersive .lat-board--fut{grid-template-columns:var(--lat-u) var(--lat-g) var(--lat-u) var(--lat-g) var(--lat-u) var(--lat-g) var(--lat-u);grid-template-rows:var(--lat-u) var(--lat-g) var(--lat-u) var(--lat-g) var(--lat-u) var(--lat-g) var(--lat-u)}.pc-theme-latticeforge.pc-immersive .lat-board--fut .lat-cell{width:var(--lat-u);height:var(--lat-u);font-size:calc(var(--lat-u) * .42)}.pc-theme-latticeforge.pc-immersive .lat-board--sky{grid-template-columns:var(--lat-g) repeat(4, var(--lat-u)) var(--lat-g);grid-template-rows:var(--lat-g) repeat(4, var(--lat-u)) var(--lat-g)}.pc-theme-latticeforge.pc-immersive .lat-board--sky .lat-cell{width:var(--lat-u);height:var(--lat-u);font-size:calc(var(--lat-u) * .42)}.pc-theme-latticeforge.pc-immersive .lat-sky-corner{width:var(--lat-g);height:var(--lat-g)}.pc-theme-latticeforge.pc-immersive .lat-board--bin{grid-template-columns:repeat(6, var(--lat-u));grid-template-rows:repeat(6, var(--lat-u))}.pc-theme-latticeforge.pc-immersive .lat-board--bin .lat-cell{width:var(--lat-u);height:var(--lat-u);font-size:calc(var(--lat-u) * .5)}.pc-theme-latticeforge.pc-immersive .lat-board--kak .lat-cell,.pc-theme-latticeforge.pc-immersive .lat-kak-wall{width:var(--lat-u);height:var(--lat-u)}.pc-theme-latticeforge.pc-immersive .lat-board--kak .lat-cell{font-size:calc(var(--lat-u) * .42)}.pc-theme-latticeforge.pc-immersive .lat-nc{width:var(--lat-u);height:var(--lat-u);flex:0 0 var(--lat-u)}.pc-theme-latticeforge.pc-immersive .lat-nono-colclue{width:var(--lat-u);flex:0 0 var(--lat-u)}.pc-theme-latticeforge.pc-immersive .lat-nono-corner,.pc-theme-latticeforge.pc-immersive .lat-nono-rowclue{width:calc(var(--lat-u) * 1.25);flex:0 0 calc(var(--lat-u) * 1.25)}.pc-theme-latticeforge.pc-immersive .lat-md-grid{grid-template-columns:repeat(4, var(--lat-u));grid-template-rows:repeat(4, var(--lat-u))}.pc-theme-latticeforge.pc-immersive .lat-md-cell{width:var(--lat-u);height:var(--lat-u);font-size:calc(var(--lat-u) * .55)}}.lat-xf-step{color:var(--ff-anvil);text-align:center;margin:.9rem 0 .35rem;font-size:1.05rem;font-weight:800}.lat-xf-step--now{color:var(--pc-select)}.lat-xf-step--rule{margin-top:1.1rem}.lat-xf-reason{text-align:center;color:var(--ff-slate-text);max-width:42ch;margin:.35rem auto .25rem;font-size:.95rem}.lat-xf-reason--target{color:var(--ff-anvil);font-weight:600}.lat-xf-grid{--lat-xf-cell:52px;border:3px solid var(--ff-outline);border-radius:8px;justify-content:center;gap:0;width:max-content;margin:.5rem auto;display:grid;overflow:hidden}.lat-xf-grid--6{--lat-xf-cell:40px}.lat-xf-cell{width:var(--lat-xf-cell);height:var(--lat-xf-cell);border:1px solid var(--ff-outline);background:var(--ff-paper);color:var(--ff-anvil);font-variant-numeric:tabular-nums;justify-content:center;align-items:center;font-size:1.4rem;font-weight:800;display:flex}.lat-xf-cell--target{background:color-mix(in oklab, var(--pc-select) 14%, var(--ff-paper));outline:3px dashed var(--pc-select);outline-offset:-3px;color:var(--pc-select)}.lat-xf-cell--solved{background:color-mix(in oklab, var(--pc-select) 22%, var(--ff-paper));color:var(--pc-select)}.lat-xf-ruleopts{flex-direction:column;gap:.5rem;max-width:44ch;margin:.5rem auto 0;display:flex}.lat-xf-rulebtn{text-align:left;min-height:48px;font-weight:600;line-height:1.35}.lat-opt-nums{gap:.6rem}.lat-opt-num{font-variant-numeric:tabular-nums;min-width:3.25rem;font-size:1.15rem}.lat-md-cell--forced{background:color-mix(in oklab, var(--pc-correct) 30%, var(--ff-paper));border-color:var(--pc-correct);color:var(--pc-correct);font-weight:800}.pc-theme-latticeforge .lf-rm-grid{grid-template-columns:repeat(auto-fill,minmax(13rem,1fr));gap:.6rem;margin-top:.8rem;display:grid}.pc-theme-latticeforge .lf-rm-level-btn{text-align:left;flex-direction:column;gap:.2rem;display:flex}.pc-theme-latticeforge .lf-rm-setup{margin-bottom:1rem}.pc-theme-latticeforge .lf-rm-region{flex-direction:column;gap:1rem;display:flex}.pc-theme-latticeforge .lf-rm-choice-row{flex-wrap:wrap;gap:.6rem;margin-top:.75rem;display:flex}.pc-theme-latticeforge .lf-rm-choice{flex:12rem}.pc-theme-latticeforge .lf-rm-choice--on{outline:.2rem solid var(--pc-select);outline-offset:.12rem}.pc-theme-latticeforge .lf-rm-once{margin-top:1rem}.pc-theme-latticeforge .lf-rm-once-val{font-size:1.15rem;font-weight:700}.pc-theme-latticeforge .lf-rm-hist{align-items:flex-end;gap:.35rem;height:9rem;padding:.5rem 0;display:flex}.pc-theme-latticeforge .lf-rm-hist-col{flex-direction:column;flex:1 1 0;justify-content:flex-end;align-items:center;gap:.15rem;height:100%;display:flex}.pc-theme-latticeforge .lf-rm-hist-bar{background:var(--pc-select);border-radius:.2rem .2rem 0 0;width:100%;min-height:.12rem}.pc-theme-latticeforge .lf-rm-hist-count{opacity:.8;font-size:.75rem;font-weight:700}.pc-theme-latticeforge .lf-rm-hist-tick{opacity:.65;font-size:.7rem}.pc-theme-latticeforge .lf-rm-stats{margin-top:.5rem}.pc-theme-latticeforge .lf-rm-lesson{border-left:.2rem solid var(--pc-select);margin-top:.5rem;padding-left:.6rem}.pc-theme-latticeforge .lf-rm-nav{margin-top:1rem}