:root{font:16px system-ui,-apple-system,sans-serif;color:#192a47;background:#f2f5fa;--blue:#245ce3;--red:#e95163;--navy:#101f3e;--light:#dbe8f6;--dark:#6483a7}*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button,select,input{font:inherit}button,a,select,input{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.4}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #e95163;outline-offset:3px}header{background:var(--navy);color:white;display:flex;justify-content:space-between;align-items:center;padding:20px max(22px,calc((100vw - 1100px)/2));gap:20px}header>a:last-child{font-size:13px;color:#c7d7f1}.brand{font-size:28px;font-weight:800;letter-spacing:-1px}.brand span,h1 span,h2 span{color:var(--red)}.brand small{font-size:18px;color:#a6b8d5;font-weight:400}main{max-width:1100px;margin:auto;padding:36px 24px}.intro{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:25px}.eyebrow{font-size:10px;font-weight:800;letter-spacing:2px;color:#61718c;margin:0 0 10px}h1{font-size:38px;letter-spacing:-1.5px;margin:0}h2{font-size:30px;letter-spacing:-1px;margin:0}.intro p:last-child{color:#61718c;font-size:14px;margin-bottom:0}.outline,.primary,.promotionChoices button{border:1px solid #ced8e7;border-radius:10px;padding:12px 16px;background:#fff;color:#223b60;font-weight:650;font-size:13px;text-align:center}.outline:hover{background:#e9effa}.primary{background:var(--blue);color:white;border-color:var(--blue)}.boardLayout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:28px;align-items:start}.boardFrame{padding:10px;background:#243954;border-radius:15px;box-shadow:0 15px 40px #17345617}.board{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));aspect-ratio:1;overflow:hidden;border-radius:5px}.square{position:relative;aspect-ratio:1;border:0;border-radius:0;padding:4%;display:grid;place-items:center;background:var(--light);color:#1c304a;min-width:0}.square.dark{background:var(--dark)}.square.selected{box-shadow:inset 0 0 0 4px #e95163;background:#f7c7af}.square.last:not(.selected){box-shadow:inset 0 0 0 3px #ecb768}.square .piece{display:block;width:91%;height:91%;filter:drop-shadow(0 2px 1px #0003);pointer-events:none}.piece svg{width:100%;height:100%;display:block}.coordinate{position:absolute;bottom:2px;right:3px;font-size:9px;font-weight:650;opacity:.75;pointer-events:none}.panel{background:white;border:1px solid #dce3ee;padding:23px;border-radius:15px}.panel>label{display:block;font-size:12px;font-weight:700;margin:17px 0 7px}.panel select{width:100%;padding:11px 9px;border:1px solid #cbd6e5;border-radius:8px;background:#f8fafd;color:#192a47;font-size:14px}.actions{display:flex;gap:8px;margin-top:22px}.actions>*{flex:1;padding:11px 8px;font-size:12px}.wide{width:100%;margin-top:10px}.help{font-size:12px;color:#61718c;line-height:1.7}.panel .help{margin-top:18px}.textButton{border:0;background:none;color:#245ce3;text-decoration:underline;font-size:12px;padding:5px 0}.boardStatus{font-size:12px;color:#61718c;min-height:20px}.clockSection{border:1px solid #dbe3ee;background:white;border-radius:18px;margin-top:35px;padding:30px;scroll-margin-top:20px}.clockHeading{display:flex;justify-content:space-between;align-items:center;gap:15px}.presets{display:flex;flex-wrap:wrap;gap:9px;margin-top:25px}.presets button{padding:10px 18px;background:#f1f5fa;border:1px solid #d9e3f0;border-radius:9px;color:#334c70;font-size:14px}.presets button[aria-pressed=true]{background:var(--navy);color:white;border-color:var(--navy)}.clockFaces{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:20px 0}.clockFace{min-height:200px;border:3px solid transparent;border-radius:14px;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:20px 10px;gap:8px;font-variant-numeric:tabular-nums;user-select:none;-webkit-user-select:none}.whiteClock{background:#eaf0f8;color:#183052}.blackClock{background:#142745;color:#f2f6ff}.clockFace strong{font-size:clamp(44px,7vw,82px);line-height:1.1;font-weight:700;letter-spacing:-3px}.clockFace .player{font-size:11px;letter-spacing:2px;font-weight:800}.turnHint{font-size:11px;min-height:14px;opacity:.75}.clockFace.active{border-color:#e95163;box-shadow:0 0 0 3px #e9516320}.clockFace.expired{background:#912e42;color:white}.clockFace.rotated>*{transform:rotate(180deg)}.clockFace.rotated{flex-direction:column-reverse}.clockControls{display:flex;align-items:center;flex-wrap:wrap;gap:12px}.check{display:flex;align-items:center;gap:9px;font-size:12px;line-height:1.6}.check input{width:18px;height:18px;accent-color:var(--blue)}#clockStatus{font-size:13px;font-weight:650}.wakeRow{border-top:1px solid #e2e9f2;margin-top:20px;padding-top:17px;display:flex;gap:12px;align-items:center;flex-wrap:wrap}#wakeStatus{font-size:11px;color:#65758c}.install{margin-bottom:0}footer{display:flex;justify-content:space-between;gap:16px;font-size:12px;color:#61718c;padding:30px 0 0}dialog{border:1px solid #cdd7e7;border-radius:16px;padding:28px;max-width:calc(100% - 30px);color:#192a47}dialog::backdrop{background:#10213caf}.promotionChoices{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0}.clock-only .boardSection,.clock-only header,.clock-only footer{display:none}.clock-only main{max-width:1100px;padding:16px}.clock-only .clockSection{margin-top:0}.clock-only .clockFace{min-height:35vh}body[data-theme=wood]{--light:#efdbc0;--dark:#b18360}body[data-theme=slate]{--light:#e4e6e8;--dark:#78808b}@media(max-width:750px){main{padding:24px 16px}.intro{align-items:flex-start}.intro>.outline{font-size:11px;padding:10px;white-space:nowrap}h1{font-size:29px}.intro p:last-child{font-size:12px}.boardLayout{grid-template-columns:1fr;gap:12px}.boardFrame{padding:7px}.panel{display:grid;grid-template-columns:1fr 1fr;gap:9px 15px;padding:18px}.panel>.eyebrow,.panel>.help,.panel>.actions,.panel>.wide,.panel>.textButton{grid-column:1/-1}.panel>label{margin:0;align-self:center}.panel>select{font-size:12px}.panel>.actions{margin-top:6px}.panel>.help{margin:5px 0}.panel>.wide{margin:0}.panel>.textButton{justify-self:start}.clockSection{padding:20px 16px;margin-top:22px}.clockFace{min-height:160px}.clockFace strong{font-size:48px;letter-spacing:-2px}.clockFaces{gap:9px}.presets{gap:7px}.presets button{padding:10px 13px}.clockHeading h2{font-size:27px}.clockHeading .outline{font-size:11px;padding:10px}.coordinate{font-size:8px}.clock-only .clockFaces{grid-template-columns:1fr}.clock-only .clockFace{min-height:25vh}.clock-only .clockFace strong{font-size:72px}footer{font-size:11px;flex-wrap:wrap}}@media(display-mode:standalone){body{padding-bottom:env(safe-area-inset-bottom)}header{padding-top:calc(20px + env(safe-area-inset-top))}.clock-only main{padding-top:calc(16px + env(safe-area-inset-top))}}
.panel>.textButton{display:block;margin-top:9px;text-align:left}
/* Full-viewport clock also works in installed apps without Fullscreen API. */
[hidden]{display:none!important}.panel>.coordsToggle{display:flex;grid-column:1/-1;margin-top:15px;gap:9px}.clock-only{overflow:hidden}.clock-only main{height:100dvh;max-width:none;padding:max(10px,env(safe-area-inset-top)) max(10px,env(safe-area-inset-right)) max(10px,env(safe-area-inset-bottom)) max(10px,env(safe-area-inset-left))}.clock-only .clockSection{height:100%;padding:16px;margin:0;display:grid;grid-template-rows:auto minmax(0,1fr) auto auto;gap:12px}.clock-only .clockHeading .eyebrow,.clock-only .presets,.clock-only .help,.clock-only .wakeRow{display:none}.clock-only .clockFaces{min-height:0;margin:0}.clock-only .clockFace{min-height:0;padding:12px}.clock-only .clockFace strong{font-size:clamp(48px,12vh,130px)}.clock-only #clockStatus{margin:0;font-size:12px}.clock-only .clockHeading h2{font-size:24px}.clock-only .clockControls{gap:8px}.clock-only .clockControls button{padding:10px 16px}@media(max-width:750px){.clock-only .clockFaces{grid-template-rows:1fr 1fr}.clock-only .clockFace strong{font-size:clamp(45px,11vh,90px)}}@media(max-height:480px) and (orientation:landscape){.clock-only .clockFaces{grid-template-columns:1fr 1fr;grid-template-rows:1fr}.clock-only .clockFace strong{font-size:18vh}.clock-only .clockSection{gap:6px;padding:8px}}
.boardToolbar{display:none}.board-only{overflow:hidden;overscroll-behavior:none}.board-only header,.board-only footer,.board-only .intro,.board-only .panel,.board-only .clockSection{display:none}.board-only main{max-width:none;height:100dvh;padding:max(10px,env(safe-area-inset-top)) max(10px,env(safe-area-inset-right)) max(10px,env(safe-area-inset-bottom)) max(10px,env(safe-area-inset-left))}.board-only .boardSection{height:100%;display:flex;flex-direction:column;gap:10px;align-items:center}.board-only .boardToolbar{display:flex;justify-content:center;gap:8px;flex-shrink:0}.board-only .boardToolbar button{padding:10px 13px;font-size:12px}.board-only .boardLayout{display:block;flex:1;min-height:0;width:100%;container-type:size}.board-only .boardLayout>div{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px}.board-only .boardFrame{width:min(100cqw,calc(100cqh - 46px));aspect-ratio:1;flex-shrink:0;padding:7px;touch-action:none;user-select:none;-webkit-user-select:none}.board-only .boardStatus{margin:0;min-height:30px;max-width:min(100%,750px);text-align:center;font-size:12px;line-height:1.3}.board-only .square{touch-action:none}.board-only dialog{max-height:90dvh;overflow:auto}@media(max-width:420px){.board-only .boardToolbar{gap:5px}.board-only .boardToolbar button{padding:10px 9px;font-size:11px}}@media(max-height:480px){.board-only .boardSection{gap:5px}.board-only .boardToolbar button{padding:6px 12px}.board-only .boardFrame{padding:4px}.board-only .coordinate{font-size:7px}}

body[data-theme=walnut]{--light:#eed5a5;--dark:#b18662}body[data-theme=walnut] .boardFrame{background:#554235}body[data-theme=olive]{--light:#b0b58c;--dark:#7b8065}body[data-theme=olive] .boardFrame{background:#414737}