.atc{--atc-light: #efe3d0;--atc-dark: #b58867;--atc-ink: #1f1a14;width:100%}:root[data-theme=dark] .atc{--atc-light: #cdbda4;--atc-dark: #8c6447}@media (prefers-color-scheme: dark){:root:not([data-theme=light]) .atc{--atc-light: #cdbda4;--atc-dark: #8c6447}}.atc .atc-banner{padding:2px 12px;border-radius:999px}.atc .atc-alert{color:var(--danger)}.atc-main{display:flex;flex-wrap:wrap;justify-content:center;align-items:flex-start;gap:12px;width:100%}.atc-col{width:min(560px,100%);display:grid;gap:4px}.atc-board{display:grid;grid-template-columns:repeat(8,1fr);width:100%;aspect-ratio:1;border-radius:8px;overflow:hidden;box-shadow:0 0 0 3px var(--cell-strong),var(--shadow);touch-action:none;container-type:inline-size}.atc-sq{position:relative;display:grid;place-items:center;aspect-ratio:1;min-width:0}.atc-sq.light{background:var(--atc-light)}.atc-sq.dark{background:var(--atc-dark)}.atc-sq.own{cursor:grab}.atc-sq.last:before{content:"";position:absolute;inset:0;background:var(--hl);opacity:.55}.atc-sq.sel:before{content:"";position:absolute;inset:0;background:var(--accent);opacity:.38}.atc-sq.check{background-image:radial-gradient(circle,rgb(230 40 40 / .95) 0%,rgb(230 40 40 / .55) 40%,transparent 72%)}.atc-sq.hint:after{content:"";position:absolute;width:30%;height:30%;border-radius:50%;background:#1e140a52;pointer-events:none}.atc-sq.cap-hint:after{content:"";position:absolute;inset:4%;border-radius:50%;box-shadow:inset 0 0 0 5px #c828148c;pointer-events:none}.atc-sq.hint,.atc-sq.cap-hint{cursor:pointer}.atc-sq.blast{box-shadow:inset 0 0 0 100px #ff781e59}.atc-sq.boom:before{content:"";position:absolute;inset:-10%;z-index:3;border-radius:50%;background:radial-gradient(circle,#fff6c2 0%,#ffb02e 35%,rgb(230 60 20 / .7) 60%,transparent 72%);animation:atc-boom .7s ease-out forwards;pointer-events:none}@keyframes atc-boom{0%{transform:scale(.2);opacity:1}to{transform:scale(1.3);opacity:0}}@media (prefers-reduced-motion: reduce){.atc-sq.boom:before{animation:none;opacity:.6}}.atc-pc{position:relative;z-index:1;line-height:1;font-size:clamp(1.5rem,9vw,3.6rem);font-size:9.6cqi;font-family:Segoe UI Symbol,Apple Symbols,"Noto Sans Symbols 2",DejaVu Sans,serif;pointer-events:none;user-select:none}.atc-pc.w{color:#fbfbf8;-webkit-text-stroke:.035em var(--atc-ink);text-shadow:0 2px 2px rgb(0 0 0 / .25)}.atc-pc.b{color:var(--atc-ink);-webkit-text-stroke:.02em rgb(255 255 255 / .35);text-shadow:0 2px 2px rgb(0 0 0 / .25)}.atc-sq.drag-src .atc-pc{opacity:.3}.atc-coord{position:absolute;font-size:clamp(.5rem,2.2cqi,.75rem);font-weight:700;line-height:1;pointer-events:none;z-index:2}.atc-coord.rank{left:3px;top:3px}.atc-coord.file{right:3px;bottom:2px}.atc-sq.light .atc-coord{color:var(--atc-dark)}.atc-sq.dark .atc-coord{color:var(--atc-light)}.atc-ghost{position:fixed;left:0;top:0;z-index:1000;transform:translate(-50%,-55%);display:grid;place-items:center;pointer-events:none;filter:drop-shadow(0 6px 8px rgb(0 0 0 / .35))}.atc-caps{display:flex;flex-wrap:wrap;align-items:center;min-height:1.6rem;gap:0 1px;padding:0 2px}.atc-caps .atc-pc{font-size:1.15rem;-webkit-text-stroke-width:.05em;text-shadow:none}.atc-lost{font-size:.8rem;color:var(--muted);margin-right:4px}.atc-side{flex:1 1 180px;max-width:240px;background:var(--surface-2);border-radius:var(--radius-sm);padding:8px;align-self:stretch;display:flex;flex-direction:column;min-height:0}.atc-side-head{font-weight:700;font-size:.85rem;color:var(--muted);margin-bottom:4px}.atc-moves{list-style:none;margin:0;padding:0;overflow-y:auto;max-height:min(520px,70vh);font-variant-numeric:tabular-nums;font-size:.92rem}.atc-moves li{display:grid;grid-template-columns:2.4em 1fr 1fr;gap:4px;padding:1px 2px}.atc-moves li:nth-child(odd){background:color-mix(in srgb,var(--surface) 55%,transparent);border-radius:4px}.atc-moves .atc-empty{display:block;color:var(--muted);font-size:.85rem;background:none!important}.atc-no{color:var(--muted)}.atc-mv.cur{font-weight:800;color:var(--accent)}.atc-promo{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}.atc-promo-btn{appearance:none;width:64px;height:64px;border-radius:12px;border:2px solid var(--border);background:#b58867;cursor:pointer;display:grid;place-items:center}.atc-promo-btn:hover,.atc-promo-btn:focus-visible{border-color:var(--accent)}.atc-promo-btn .atc-pc{font-size:2.6rem}@media (max-width: 760px){.atc-side{max-width:none;flex-basis:100%}.atc-moves{max-height:7.5em}}