.sg-layout{min-height:100vh}.sg-main{max-width:1100px;margin:0 auto;padding:1rem 1.25rem 3rem;display:grid;grid-template-columns:minmax(0,auto) minmax(280px,1fr);gap:1.5rem;align-items:start}@media(max-width:860px){.sg-main{grid-template-columns:minmax(0,1fr)}}.sg-board-area{--sq: min(48px, calc((100vw - 3.5rem) / 9.6));display:flex;flex-direction:column;align-items:center;gap:.6rem}.sg-board-wrap{display:flex;flex-direction:column}.sg-files{display:grid;grid-template-columns:repeat(9,var(--sq));text-align:center;font-size:.75rem;color:var(--lab-text-muted)}.sg-board-row{display:flex}.sg-ranks{display:grid;grid-template-rows:repeat(9,var(--sq));align-items:center;padding-left:.3rem;font-size:.75rem;color:var(--lab-text-muted)}.sg-board{display:grid;grid-template-columns:repeat(9,var(--sq));grid-template-rows:repeat(9,var(--sq));background:#e3c08a;border:2px solid #5b4021;border-radius:4px;box-shadow:var(--lab-shadow)}.sg-sq{position:relative;display:flex;align-items:center;justify-content:center;border:0;border-right:1px solid rgba(60,40,15,.55);border-bottom:1px solid rgba(60,40,15,.55);background:transparent;padding:0;cursor:pointer;font:inherit;color:#1b1208}.sg-sq:nth-child(9n){border-right:0}.sg-sq:nth-last-child(-n+9){border-bottom:0}.sg-sq:hover{background:#ffffff40}.sg-sq.sg-last{background:#ffc40073}.sg-sq.sg-from{background:#ffc40033}.sg-piece{font-size:calc(var(--sq) * .56);font-weight:700;line-height:1;font-family:Hiragino Mincho ProN,Yu Mincho,YuMincho,serif}.sg-piece.sg-white{transform:rotate(180deg)}.sg-piece.sg-promoted{color:#b3170b}.sg-hand-row{width:calc(var(--sq) * 9 + 1.2rem);max-width:100%;display:flex;align-items:center;gap:.6rem;min-height:2rem;font-size:.85rem}.sg-hand-label{color:var(--lab-text-muted);white-space:nowrap}.sg-hand{display:flex;flex-wrap:wrap;gap:.15rem .6rem;font-weight:700}.sg-hand .sg-count{font-size:.75rem;font-weight:400;color:var(--lab-text-muted)}.sg-hand-empty{color:var(--lab-text-muted);font-weight:400}.sg-panel{display:flex;flex-direction:column;gap:1rem;min-width:0}.sg-card{background:var(--lab-bg-card);border:1px solid var(--lab-border);border-radius:var(--lab-radius);padding:1rem 1.1rem}.sg-h2{font-size:1rem;margin:0 0 .6rem}.sg-field{display:flex;flex-direction:column;gap:.3rem;font-size:.85rem;color:var(--lab-text-muted)}.sg-field.sg-inline{flex-direction:row;align-items:center}.sg-field select,.sg-sfen textarea{font:inherit;color:var(--lab-text);background:var(--lab-bg);border:1px solid var(--lab-border);border-radius:var(--lab-radius-sm);padding:.4rem .5rem}.sg-sfen textarea{width:100%;box-sizing:border-box;font-family:ui-monospace,Consolas,monospace;font-size:.8rem;margin-top:.5rem}.sg-sfen summary{cursor:pointer;font-size:.85rem;color:var(--lab-accent);margin-top:.6rem}.sg-note{font-size:.8rem;color:var(--lab-text-muted);margin:.5rem 0 0;line-height:1.6}.sg-note:empty{display:none}.sg-owner{display:flex;gap:1rem;font-size:.9rem;margin-bottom:.5rem}.sg-palette{display:grid;grid-template-columns:repeat(5,1fr);gap:.3rem}.sg-tool{font:inherit;font-weight:700;padding:.35rem 0;border:1px solid var(--lab-border);border-radius:var(--lab-radius-sm);background:var(--lab-bg);color:var(--lab-text);cursor:pointer}.sg-tool.sg-active{border-color:var(--lab-accent);box-shadow:0 0 0 1px var(--lab-accent) inset;color:var(--lab-accent)}.sg-hand-edit{display:grid;grid-template-columns:repeat(auto-fill,minmax(92px,1fr));gap:.35rem;margin-top:.7rem}.sg-hand-item{display:flex;align-items:center;justify-content:space-between;gap:.25rem;border:1px solid var(--lab-border);border-radius:var(--lab-radius-sm);padding:.15rem .3rem;font-weight:700}.sg-hand-item button{width:1.6rem;height:1.6rem;border:0;border-radius:50%;background:var(--lab-bg-table);color:var(--lab-text);cursor:pointer}.sg-check{display:flex;gap:.4rem;align-items:flex-start;font-size:.85rem;margin-top:.7rem}.sg-buttons{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.7rem}.sg-btn{font:inherit;font-size:.85rem;padding:.4rem .8rem;border:1px solid var(--lab-border);border-radius:var(--lab-radius-sm);background:var(--lab-bg);color:var(--lab-text);cursor:pointer}.sg-btn:hover{border-color:var(--lab-accent)}.sg-btn:disabled{opacity:.5;cursor:default}.sg-btn-main{background:var(--lab-accent);border-color:var(--lab-accent);color:#fff;font-weight:700;padding:.5rem 1.4rem}.sg-solve-row{display:flex;flex-wrap:wrap;align-items:center;gap:.7rem}.sg-status{font-size:.85rem;margin:.6rem 0 0;color:var(--lab-text-muted)}.sg-status:empty{display:none}.sg-status.sg-error{color:var(--lab-red)}.sg-play{display:flex;align-items:center;gap:.35rem}.sg-ply{min-width:4.5rem;text-align:center;font-size:.85rem;color:var(--lab-text-muted)}.sg-moves{display:flex;flex-wrap:wrap;gap:.3rem .4rem;list-style:none;padding:0;margin:.8rem 0 0}.sg-moves li button{font:inherit;font-size:.9rem;padding:.2rem .45rem;border:1px solid transparent;border-radius:6px;background:transparent;color:var(--lab-text);cursor:pointer}.sg-moves li button.sg-current{border-color:var(--lab-accent);color:var(--lab-accent)}.sg-tag{display:inline-block;margin-left:.3rem;padding:0 .35rem;font-size:.7rem;line-height:1.5;border:1px solid var(--lab-accent);border-radius:999px;color:var(--lab-accent);vertical-align:.1em}.sg-explain{margin-top:.8rem;padding-top:.7rem;border-top:1px solid var(--lab-border)}.sg-explain:empty{display:none}.sg-comment{font-size:.88rem;line-height:1.75;margin:.3rem 0 .5rem}.sg-comment-all{margin-top:.6rem}.sg-comment-text p{font-size:.85rem;line-height:1.75;margin:0 0 .5rem}.sg-h3{font-size:.95rem;margin:0 0 .3rem}.sg-alts-lead{font-size:.8rem;color:var(--lab-text-muted);margin:.5rem 0 .3rem}.sg-alts{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.25rem}.sg-alts button{font:inherit;font-size:.85rem;width:100%;text-align:left;display:flex;flex-wrap:wrap;gap:.2rem .6rem;padding:.3rem .5rem;border:1px solid var(--lab-border);border-radius:var(--lab-radius-sm);background:var(--lab-bg);color:var(--lab-text);cursor:pointer}.sg-alts button:hover{border-color:var(--lab-accent)}.sg-alts button span{color:var(--lab-text-muted)}.sg-more summary{cursor:pointer;font-size:.8rem;color:var(--lab-accent);margin:.4rem 0 .3rem}.sg-branch-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem;font-size:.85rem;font-weight:700}.sg-about ul{margin:0;padding-left:1.2rem;font-size:.85rem;line-height:1.7;color:var(--lab-text-muted)}