.chess-hero{width:100%;max-width:820px}.chess-hero__main{display:grid;grid-template-columns:4fr 3fr;gap:.75rem;aspect-ratio:7/4}.chess-hero__board{aspect-ratio:1/1;width:100%;height:100%;border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-xl);background:#7c4b1e}.chess-hero__board svg{width:100%;height:100%;display:block}.chess-hero__sidebar{min-width:0;min-height:0;height:100%;overflow:hidden;display:flex;flex-direction:column;gap:.5rem}@media (max-width:640px){.chess-hero{max-width:420px}.chess-hero__main{display:flex;flex-direction:column;aspect-ratio:auto;gap:.5rem}.chess-hero__board{width:100%;height:auto;aspect-ratio:1}.chess-hero__sidebar{width:100%;height:auto;min-height:0}}.chess-hero__controls{flex-shrink:0;display:flex;align-items:center;gap:.4rem;padding:.3rem .5rem;border:1.5px solid var(--ref-neutral-800);border-radius:var(--radius);background:var(--bg-soft)}[data-theme=dark] .chess-hero__controls{border-color:var(--ref-neutral-200)}.ctrl{width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;background:0 0;border:1px solid var(--border-strong);border-radius:var(--radius-sm);color:var(--fg);cursor:pointer;transition:background .1s,color .1s,border-color .1s}.ctrl:hover{background:var(--brand);color:var(--brand-fg);border-color:var(--brand)}.ctrl:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.ctrl .icon-play{display:none}#chess-play-btn[data-state=playing] .icon-pause{display:block}#chess-play-btn[data-state=playing] .icon-play,#chess-play-btn[data-state=paused] .icon-pause{display:none}#chess-play-btn[data-state=paused] .icon-play{display:block}#chess-play-btn[data-state=finished] .icon-pause{display:none}#chess-play-btn[data-state=finished] .icon-play{display:block}#chess-play-btn[data-state=finished]{background:var(--brand);color:var(--brand-fg);border-color:var(--brand)}.ctrl-status{margin-left:auto;font-size:.7rem;color:var(--fg-muted);font-family:var(--font-display);font-style:italic;letter-spacing:.02em}.chess-hero__moves{--grid-line:var(--ref-neutral-800);flex:1 1 auto;min-height:0;width:100%;display:flex;flex-direction:column;border:1.5px solid var(--ref-neutral-800);border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-soft);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}[data-theme=dark] .chess-hero__moves{--grid-line:var(--ref-neutral-200);border-color:var(--ref-neutral-200)}@media (max-width:640px){.chess-hero__moves{height:220px;flex:0 0 auto}}.mhd,.mr{display:grid;grid-template-columns:2.6rem minmax(0,1fr) minmax(0,1fr) 2.6rem}.mhd{flex-shrink:0;background:var(--bg-deep);border-bottom:1.5px solid var(--grid-line);padding-right:10px}.mhd>span{padding:.32rem .45rem;font-size:.62rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--fg)}.mhd>span:nth-child(1){text-align:center}.mhd>span:nth-child(2){text-align:left}.mhd>span:nth-child(3){text-align:left}.mhd>span:nth-child(4){text-align:center}.mhd>span+span,.mr>.mc+.mc{border-left:1px solid var(--grid-line)}.mbd{flex:1;overflow-y:scroll;scrollbar-width:thin;scrollbar-color:var(--brand) var(--bg-deep);display:flex;flex-direction:column;justify-content:flex-start}.mbd::-webkit-scrollbar{width:10px}.mbd::-webkit-scrollbar-track{background:var(--bg-deep);border-left:1px solid var(--grid-line)}.mbd::-webkit-scrollbar-thumb{background:var(--brand);border-radius:5px;border:2px solid var(--bg-deep)}.mbd::-webkit-scrollbar-thumb:hover{background:var(--brand-hover)}.mr{border-top:1px solid var(--grid-line);flex-shrink:0}.mr:first-child{border-top:none}.mr:nth-child(2n){background:#0000000a}[data-theme=dark] .mr:nth-child(2n){background:#ffffff0a}.mc-num{text-align:center;padding-inline:.2rem;color:var(--fg-muted);font-weight:600;font-size:.66rem}.mc-white,.mc-black{text-align:left}.mc-note{text-align:center;padding-inline:.15rem;font-weight:700;font-size:.72rem}.mft{flex-shrink:0;display:none;align-items:center;justify-content:center;gap:.45rem;padding:.42rem .5rem;background:var(--brand);color:var(--brand-fg);border-top:1.5px solid var(--grid-line);font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em}.mft.is-revealed{display:flex}.mft-icon{font-size:.95rem;line-height:1}.mft-notation{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#ffffff2e;padding:.08rem .4rem;border-radius:3px;letter-spacing:.02em}.mc{padding:.22rem .45rem;font-size:.72rem;line-height:1.55;color:var(--fg-soft);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:default;transition:background 80ms,color 80ms;min-width:0}.mph{background:0 0}.mc.jp{background:var(--brand);color:var(--brand-fg);font-weight:600}.mc-note.jp{color:var(--brand-fg)!important}.mc-note.ann-brilliant{color:#0e7490}.mc-note.ann-great{color:#1e3a8a}.mc-note.ann-good{color:#2563eb}.mc-note.ann-inaccuracy{color:#a16207}.mc-note.ann-mistake{color:#c2410c}.mc-note.ann-blunder{color:#dc2626}.mc-note.ann-miss{color:#be123c}.chess-hero__caption{display:flex;flex-direction:column;align-items:center;text-align:center;gap:.45rem;margin:.75rem 0 0;padding:1rem 1rem 1.1rem;border-radius:var(--radius-lg);background:linear-gradient(180deg,#000000d9,#0000008c 65%,#0000);color:#f5e6d3;font-family:var(--font-display);font-size:var(--fs-base)}.chess-hero__caption .players{display:inline-flex;align-items:center;flex-wrap:wrap;justify-content:center;gap:.65rem;font-style:normal}.chess-hero__caption .player{display:inline-flex;align-items:center;gap:.45rem}.chess-hero__caption .player-name{font-weight:700;font-size:var(--fs-lg);color:#fff;letter-spacing:.005em}.chess-hero__caption .player-color{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.09em;color:#f5e6d3;padding:.1rem .45rem;border:1px solid rgba(245,230,211,.5);border-radius:var(--radius-sm)}.chess-hero__caption .vs{font-size:.85rem;color:#f5e6d3a6;font-weight:600;font-style:italic}.chess-hero__caption .kn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:5px;flex-shrink:0;box-shadow:var(--shadow-sm)}.chess-hero__caption .kn img{width:22px;height:22px}.chess-hero__caption .kn-w{background:#2b1a08;border:1px solid #1a0f04}.chess-hero__caption .kn-b{background:#f5e6d3;border:1px solid #c8a878}.chess-hero__caption .meta{font-size:var(--fs-sm);font-style:italic;color:#f5e6d3c7}