:root{--felt: #134a32;--felt-deep: #0b3022;--felt-tex: none;--ink: #f7f0e1;--ink-dim: rgba(247, 240, 225, .72);--ivory: #fbf6ea;--card-ink: #1d1a17;--brass: #e3b23c;--brass-deep: #b8861f;--red: #c0262f;--blue: #1f3f8f;--panel: rgba(9, 22, 16, .86);--panel-line: rgba(227, 178, 60, .28);--good: #5fd28a;--bad: #ff6b5e;--bar-h: 58px;--radius: 14px;--shadow: 0 10px 30px rgba(0, 0, 0, .45);--serif: "Playfair Display", Georgia, serif;--sans: "Source Sans 3", system-ui, sans-serif;color-scheme:dark}html,body{margin:0;height:100%}body{background:var(--felt-deep);background-image:radial-gradient(ellipse at 50% 30%,#ffffff12,#00000059 80%),var(--felt-tex);background-size:auto,512px;background-attachment:fixed;color:var(--ink);font:16px/1.4 var(--sans);overflow:hidden;-webkit-tap-highlight-color:transparent;user-select:none;-webkit-user-select:none;touch-action:manipulation}button{font:inherit;color:inherit}#bar{position:fixed;inset:0 0 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(orientation:portrait){body[data-reversi-theme]{background-image:var(--reversi-phone-scene);background-position:center;background-size:cover}.moss-hud{top:max(7px,env(safe-area-inset-top));width:calc(100vw - 14px);min-height:78px;grid-template-columns:1fr auto;grid-template-rows:34px 32px;gap:3px 7px;padding:5px 7px 5px 11px;border-radius:19px}.moss-brand{grid-column:1}.brand-mark{width:29px;height:27px}.brand-mark i{width:20px;height:20px}.moss-brand strong{font-size:20px}.moss-actions{grid-column:2;grid-row:1}.moss-action{width:31px;height:31px}.moss-action svg{width:17px;height:17px}.moss-action:after{display:none}.moss-stats{grid-column:1/-1;grid-row:2;gap:5px}.moss-stats>span{height:29px;min-width:0;flex:1;padding:0 8px;gap:7px}.moss-stats small{font-size:11px}.moss-stats b{font-size:15px}.reversi-layout{--board-size:min( calc(100vw - 16px) , calc(100dvh - 300px) ,640px);inset:90px 0 0;grid-template-columns:repeat(2,calc(var(--board-size) / 2));grid-template-rows:auto auto auto 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