.reversi .ak-game-stage{grid-template-rows:minmax(0,1fr) auto}.rv-board{aspect-ratio:1;border-radius:var(--r-xl);width:min(100%,100dvh - 150px,640px);box-shadow:inset 0 0 0 2px #0006, 0 0 0 1px var(--line-strong), var(--shadow-lg);background:#0d3b2c;grid-template-rows:repeat(8,1fr);grid-template-columns:repeat(8,1fr);gap:3px;padding:10px;display:grid;position:relative}.rv-cell{cursor:default;perspective:400px;background:#17694d;border:0;border-radius:6px;place-items:center;padding:0;display:grid;position:relative}.rv-cell.is-playable{cursor:pointer}.rv-cell.is-playable:hover{background:#1f805e}.rv-cell.is-hint{box-shadow:inset 0 0 0 3px var(--amber)}.rv-disc{width:82%;height:82%;animation:rv-flip .35s var(--ease);border-radius:50%;box-shadow:0 4px 6px #00000073}.rv-disc.is-black{background:radial-gradient(circle at 35% 30%,#5a5a55,#141412 60%)}.rv-disc.is-white{background:radial-gradient(circle at 35% 30%,#fff,#ddd6c6 65%)}.rv-disc.is-last{box-shadow:0 0 0 3px var(--orange), 0 4px 6px #00000073}.rv-dot{opacity:.45;border-radius:50%;width:22%;height:22%}.rv-dot.is-black{background:#141412}.rv-dot.is-white{background:#fff}.rv-balance{height:10px;box-shadow:inset 0 0 0 1px var(--line);background:#e9e3d4;border-radius:99px;overflow:hidden}.rv-balance i{height:100%;transition:width .4s var(--ease);background:#141412;display:block}.rv-notice{text-align:center;font-family:var(--font-mono);color:var(--amber);letter-spacing:.08em;margin:10px 0 0;font-size:.72rem}.rv-analysis{gap:8px;margin:0;font-size:.84rem;display:grid}.rv-analysis div{background:#0003;border-radius:8px;justify-content:space-between;padding:8px 10px;display:flex}.rv-analysis dt{color:var(--muted)}.rv-analysis dd{font-family:var(--font-mono);margin:0}@keyframes rv-flip{0%{transform:rotateY(90deg)scale(.9)}to{transform:none}}