.reversi-page{--rv-board:#188a58;--rv-grid:#0f6942}.reversi-page .gameheader{margin-bottom:10px}.reversi-page .gameheader p{max-width:760px}.reversi-workspace{display:block}.reversi-game-panel{max-width:860px;margin:0 auto}.reversi-setup{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:end}.rv-setup-left{display:grid;gap:6px}.reversi-side-row{display:grid;grid-template-columns:repeat(2,minmax(130px,1fr));gap:8px;min-width:280px}.reversi-side-row select{width:100%}.reversi-board-shell{position:relative;width:clamp(440px,calc(100vh - 570px),620px);max-width:100%;background:#115c3d;padding:10px;border-radius:18px;box-shadow:0 10px 26px #0b3c2922,inset 0 0 0 1px #ffffff20}.reversi-board{background:var(--rv-board);border:2px solid var(--rv-grid);border-radius:4px;overflow:hidden}.reversi-cell{border-color:#0f6849;background:transparent}.reversi-cell.legal .reversi-dot{width:18%;background:#ffffffa8;box-shadow:0 0 0 2px #17372a55}.reversi-board.hide-legal .reversi-dot{display:none}.reversi-cell.last-move{box-shadow:inset 0 0 0 4px #ffd166}.reversi-cell.hint{box-shadow:inset 0 0 0 5px #ffcf33}.reversi-cell.rv-flip .reversi-disc{animation:rvflip .32s ease}.reversi-cell.rv-new .reversi-disc{animation:rvpop .22s ease}.reversi-disc{transition:transform .18s ease,background .18s ease}.reversi-cell .rv-coord{display:none;position:absolute;z-index:2;font-size:9px;font-weight:900;color:#e6fff5aa;pointer-events:none}.reversi-board.show-coords .reversi-cell:nth-child(-n+8) .rv-col{display:block;top:2px;left:4px}.reversi-board.show-coords .reversi-cell:nth-child(8n+1) .rv-row{display:block;bottom:2px;right:4px}.reversi-ai-line{display:flex;justify-content:center;align-items:center;gap:8px;min-height:28px;margin:7px 0 0;color:var(--muted);font-size:.82rem}.reversi-ai-line strong{color:var(--text)}.reversi-actions{margin-top:9px}.reversi-actions button{min-width:88px}.rv-primary{background:var(--text)!important;color:var(--bg)!important}.rv-toolstrip{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:8px}.rv-toolstrip button{border:1px solid var(--line);background:var(--card);border-radius:10px;padding:8px 10px;font-weight:750}.rv-more{max-width:620px;margin:10px auto 0;border:1px solid var(--line);border-radius:12px;background:var(--card)}.rv-more>summary{cursor:pointer;padding:10px 12px;font-weight:800;list-style:none}.rv-more>summary::-webkit-details-marker{display:none}.rv-more>summary::after{content:'＋';float:right;color:var(--muted)}.rv-more[open]>summary::after{content:'−'}.rv-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;padding:0 12px 12px}.rv-check{display:flex;align-items:center;gap:8px;padding:9px;border:1px solid var(--line);border-radius:10px;font-size:.86rem}.rv-history{grid-column:1/-1;display:grid;grid-template-columns:1fr auto;gap:8px;align-items:start;padding-top:4px}.rv-moves{min-height:38px;max-height:88px;overflow:auto;padding:8px;border-radius:9px;background:var(--soft);font:600 .8rem/1.45 ui-monospace,SFMono-Regular,Menlo,monospace}.rv-coach-details{max-width:860px;margin:12px auto 0;border:1px solid var(--line);border-radius:14px;background:var(--card);padding:0!important}.rv-coach-details>summary{padding:12px 14px;cursor:pointer;font-weight:850;list-style:none}.rv-coach-details>summary::-webkit-details-marker{display:none}.rv-coach-details>summary::after{content:'＋';float:right}.rv-coach-inner{padding:0 14px 14px;display:grid;grid-template-columns:1.1fr .9fr;gap:12px}.rv-coach-inner .reversi-stats{align-self:start}.reversi-v0176-wrap{margin-top:14px;border:1px solid var(--line);border-radius:14px;background:var(--card)}.reversi-v0176-wrap>summary{cursor:pointer;padding:13px 15px;font-weight:850;list-style:none}.reversi-v0176-wrap>summary::-webkit-details-marker{display:none}.reversi-v0176-wrap>summary::after{content:'＋';float:right}.reversi-v0176-wrap[open]>summary::after{content:'−'}.reversi-v0176-wrap .reversi-v0176{padding:0 12px 12px;margin-top:0}.reversi-guide{margin-top:14px}.mobile-dock{z-index:20}.reversi-page.rv-fullscreen .mobile-dock{display:none}.reversi-board-shell:fullscreen{background:#0f172a;padding:min(3vw,30px);width:100vw;height:100vh}.reversi-board-shell:fullscreen .reversi-board{width:min(92vmin,820px);max-width:none}.reversi-board-shell:fullscreen .reversi-ai-line{color:#d6e3df}.reversi-board-shell:fullscreen .reversi-ai-line strong{color:white}@keyframes rvflip{0%{transform:rotateY(90deg) scale(.8)}100%{transform:rotateY(0) scale(1)}}@keyframes rvpop{0%{transform:scale(.35)}100%{transform:scale(1)}}
@media(max-width:760px){.reversi-page{padding-top:12px}.reversi-page .gameheader h1{font-size:34px;margin:3px 0}.reversi-page .gameheader p{font-size:14px;line-height:1.3}.reversi-flow-tabs{grid-template-columns:repeat(2,1fr);margin-bottom:7px}.reversi-setup{grid-template-columns:1fr;gap:7px}.reversi-difficulty{grid-template-columns:repeat(2,1fr)}.reversi-difficulty button{min-height:38px}.reversi-side-row{grid-template-columns:1fr 1fr;min-width:0}.reversi-turnbar{margin-bottom:6px}.reversi-board-shell{max-width:calc(100vw - 28px);padding:6px;border-radius:12px}.reversi-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:6px}.reversi-actions button{min-width:0;font-size:.78rem;padding:8px 3px}.rv-toolstrip{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.rv-toolstrip button{font-size:.76rem;padding:8px 3px}.rv-options{grid-template-columns:1fr 1fr}.rv-history{grid-column:1/-1;grid-template-columns:1fr}.rv-coach-inner{grid-template-columns:1fr}.rv-coach-details{margin-top:9px}.reversi-v0176-wrap{margin-top:10px}.reversi-guide{margin-top:10px}.reversi-ai-line{font-size:.75rem;min-height:24px}.reversi-page .status{font-size:.82rem;padding:8px}.reversi-cell .rv-coord{font-size:7px}.reversi-page .mobile-dock{display:none}}

.rv-guide-wrap{margin-top:10px;border:1px solid var(--line);border-radius:14px;background:var(--card)}.rv-guide-wrap>summary{padding:12px 14px;cursor:pointer;font-weight:850;list-style:none}.rv-guide-wrap>summary::-webkit-details-marker{display:none}.rv-guide-wrap>summary::after{content:'＋';float:right}.rv-guide-wrap[open]>summary::after{content:'−'}.rv-guide-wrap .reversi-guide{padding:0 12px 12px;margin:0}

@media(max-width:760px){body>.preview-note{display:none}.topbar{min-height:54px}.reversi-page .gameheader .eyebrow,.reversi-page .gameheader p{display:none}.reversi-page .gameheader{margin-bottom:4px}.reversi-page .gameheader h1{font-size:32px;margin:0 0 4px}.reversi-page .reversi-flow-tabs{display:flex;flex-wrap:nowrap;overflow-x:auto;gap:5px;margin-bottom:6px;padding-bottom:2px}.reversi-page .reversi-flow-tabs a{flex:0 0 auto;padding:8px 10px;font-size:.76rem;white-space:nowrap}.reversi-page .reversi-difficulty{grid-template-columns:repeat(4,1fr);gap:4px}.reversi-page .reversi-difficulty button{font-size:.71rem;padding:7px 2px;min-height:34px}.reversi-page .reversi-setup{gap:5px}.reversi-page .reversi-side-row select{min-height:35px}.reversi-page .reversi-turnbar span{padding:5px 2px}.reversi-page .reversi-turnbar{margin-bottom:5px}.mobile-dock{display:none!important}.rv-guide-wrap{margin-top:8px}}
@media (max-width: 760px) {
  html, body { overflow-x: hidden; }
  .reversi-page { max-width: 100%; overflow-x: hidden; }
}
.rv-load-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;margin-top:8px}.rv-load-row input{min-width:0;border:1px solid #d8dee7;border-radius:10px;background:#fff;padding:9px 10px;font:inherit}.rv-load-row button{white-space:nowrap}@media(max-width:760px){.rv-load-row{grid-template-columns:1fr}.rv-load-row button{width:100%}}