:root{color-scheme:dark;--ink:#f6ecd3;--muted:#c4c9bb;--gold:#d9b97c}*{box-sizing:border-box}body{margin:0;background:#102627;color:var(--ink);font-family:'Hiragino Kaku Gothic ProN','Yu Gothic',sans-serif;min-height:100svh}#scene,.veil{position:fixed;inset:0;pointer-events:none}#scene{background:url('assets/scene1.webp') center/cover;transition:background-image 1s;z-index:-3}.veil{background:linear-gradient(90deg,#071b20b8,#071b2033 65%,#071b2066),linear-gradient(0deg,#071b20df,transparent 65%);z-index:-2}header{display:flex;align-items:center;justify-content:space-between;padding:24px 5vw;gap:16px}.wordmark{letter-spacing:.22em;color:var(--ink);font-size:20px;text-decoration:none}.wordmark span{font-weight:300}.top-actions{display:flex;gap:14px;align-items:center}button{font:inherit;color:inherit;cursor:pointer;border:0;background:transparent;touch-action:manipulation}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid #ffe2a2;outline-offset:3px}button:disabled{opacity:.42;cursor:default}.small,.primary{background:url('assets/button.webp') center/100% 100% no-repeat;min-height:44px;padding:10px 24px;font-size:13px}.icon{width:46px;height:46px;padding:0}.icon img{width:100%;height:100%;object-fit:contain}main{max-width:1200px;margin:16px auto 0;display:grid;grid-template-columns:1fr minmax(320px,490px);gap:7vw;padding:0 5vw;align-items:center}.story{align-self:center}.eyebrow{font-size:10px;letter-spacing:.22em;color:var(--gold);line-height:1.8}.chapter{margin-top:42px;letter-spacing:.2em;font-size:12px;color:var(--gold)}h1{font-family:Georgia,'Yu Mincho',serif;font-weight:500;font-size:clamp(30px,3.4vw,48px);letter-spacing:.08em;margin:18px 0}#sceneSubtitle{font-size:13px;letter-spacing:.1em;color:var(--muted)}#keywords{display:flex;flex-wrap:wrap;gap:8px;margin:24px 0}#keywords span{background:url('assets/button.webp') center/100% 100%;padding:10px 18px;font-size:12px}.tagline{font-size:18px;line-height:1.9;letter-spacing:.15em;margin:44px 0 24px}.scorebar{display:flex;align-items:center;gap:20px;padding:0 8px 15px}.scorebar small{display:block;letter-spacing:.18em;font-size:9px;color:var(--gold)}#score{font:36px Georgia,serif}.next{flex:1;text-align:right;font-size:11px;color:var(--muted)}progress{display:block;width:100%;height:4px;margin-top:10px;accent-color:var(--gold)}.board-frame{position:relative;padding:12px;background:url('assets/panel.webp') center/100% 100%;border-radius:8px}#board{display:grid;grid-template-columns:repeat(8,1fr);gap:2px;aspect-ratio:1;touch-action:none}.cell{min-width:0;padding:0;aspect-ratio:1;background:url('assets/square.webp') center/100% 100%;position:relative;border-radius:3px;opacity:.82}.cell img{width:100%;height:100%;display:block;object-fit:fill}.cell.filled{opacity:1}.cell.preview{filter:brightness(1.7);outline:1px solid #f6dfab}.cell.bad{filter:brightness(.65) sepia(1);outline:2px solid #f18a76}.tray-label{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:11px;margin:12px 2px 2px}.tray-label .small{padding:10px 22px}#tray{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.piece{height:92px;display:flex;align-items:center;justify-content:center;padding:12px;background:url('assets/panel.webp') center/100% 100%;touch-action:none}.piece.selected{filter:brightness(1.35);outline:1px solid #d6bb7b;outline-offset:-6px}.mini{display:grid;gap:0;pointer-events:none}.mini img{width:22px;height:22px}.mini i{width:22px;height:22px}.bottomline{display:flex;align-items:center;justify-content:space-between;font-size:10px;color:var(--muted);margin:12px 3px}.textbtn{font-size:11px;text-decoration:underline;min-height:40px}footer{max-width:1200px;margin:26px auto 16px;padding:0 5vw;font-size:9px;color:#bdc3b8;display:flex;justify-content:space-between;gap:12px}dialog{width:min(92vw,490px);padding:0;border:1px solid #92794e;background:#10292bf5;color:var(--ink);border-radius:10px;box-shadow:0 24px 100px #0009}dialog::backdrop{background:#061519bd;backdrop-filter:blur(6px)}.modalinner{padding:30px}.modalinner h2{font-family:'Yu Mincho',serif;font-size:26px;line-height:1.5;font-weight:500}.modalinner p,.modalinner li{font-size:14px;line-height:1.9;color:var(--muted)}.primary{width:100%;min-height:54px;margin-top:18px}.modalinner label{display:block;margin:20px 0;font-size:14px}.modalinner input[type=range]{width:100%;margin-top:12px;accent-color:var(--gold)}.modalinner select{width:100%;padding:12px;margin-top:10px;background:#193235;color:var(--ink)}.gallery-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.gallery-card{background:url('assets/panel.webp') center/100% 100%;padding:12px;font-size:12px;min-height:65px}.gallery-card img{width:100%;aspect-ratio:1.5;object-fit:cover;border-radius:3px}.gallery-card span{display:block;padding:8px 0}#toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:#10292bf5;padding:12px 20px;border:1px solid #a68a50;border-radius:7px;opacity:0;transition:.2s;z-index:9;max-width:90vw;font-size:13px;pointer-events:none}#toast.show{opacity:1;transform:translate(-50%,0)}#particles{position:absolute;inset:12px;pointer-events:none;overflow:hidden}.burst{position:absolute;width:48px;height:48px;background:url('assets/shards.webp') center/contain;animation:burst .65s ease-out forwards}@keyframes burst{from{transform:scale(.5);opacity:1}to{transform:translate(var(--dx),var(--dy)) rotate(90deg) scale(1.5);opacity:0}}#dragGhost{position:fixed;z-index:12;pointer-events:none;display:none;filter:drop-shadow(0 8px 8px #0007)}body.viewing main .game,body.viewing .tagline,body.viewing footer{visibility:hidden}body.viewing .veil{opacity:.4}body.viewing main{pointer-events:none}body.viewing .story button{pointer-events:auto}.transitioning .board-frame{opacity:.3;transition:opacity .4s}@media(max-width:760px){header{padding:14px 5vw}.wordmark{font-size:16px}.top-actions{gap:5px}.top-actions .small{font-size:11px;padding:8px 18px}main{display:flex;flex-direction:column;gap:16px;max-width:510px;padding:0 14px;margin:0 auto}.story{width:100%;text-align:center}.eyebrow,.tagline{display:none}.chapter{margin-top:2px;font-size:9px}h1{font-size:25px;margin:8px 0}#sceneSubtitle{font-size:10px;margin:5px 0}#keywords{justify-content:center;margin:9px 0 0;gap:4px}#keywords span{padding:7px 13px;font-size:10px}.story>#viewBtn{position:absolute;top:68px;right:8px;background:none;padding:4px;font-size:9px;min-height:32px}.game{width:100%}.scorebar{padding-bottom:7px;gap:14px}#score{font-size:29px}.board-frame{padding:9px}.tray-label{margin-top:8px}.piece{height:79px;padding:9px}.bottomline{margin:3px 2px}.mini img,.mini i{width:20px;height:20px}footer{margin:16px auto;padding:0 16px;display:block;text-align:center;font-size:8px}footer span{display:block;margin-top:5px}#scene{background-position:center}.veil{background:linear-gradient(0deg,#071b20ee,#071b2055 65%,#071b20a0)}.modalinner{padding:22px}.modalinner .eyebrow{display:block}.icon{width:40px;height:40px}body.viewing .story{margin-top:20vh}}@media(max-width:360px){header{padding:10px 12px}main{padding:0 8px;gap:10px}.piece{height:70px}.mini img,.mini i{width:18px;height:18px}.tray-label{font-size:10px}.tray-label .small{padding:8px 18px}.bottomline{font-size:9px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}
/* Generated panel artwork supplies the visible chrome; overlays protect text contrast. */
.scorebar{background:url('assets/panel.webp') center/100% 100% no-repeat;padding:12px 20px;margin-bottom:8px}.modalinner{background:linear-gradient(#10292b80,#10292b80),url('assets/panel.webp') center/100% 100% no-repeat}.cell:not(.filled){opacity:.42}.cell.preview{opacity:1}.cell:focus-visible{z-index:2}.board-frame{background-image:url('assets/square.webp')}@media(max-width:760px){.scorebar{padding:8px 14px;margin-bottom:5px}.scorebar .icon{width:34px;height:34px}.board-frame{padding:7px}}

@media(min-width:761px){#scene{background-position:center top}}
/* Browser review: keep the whole desktop board and hand visible. */
@media(min-width:761px){header{padding-top:16px;padding-bottom:16px}main{grid-template-columns:1fr minmax(320px,410px);margin-top:2px}.piece{height:74px}.tagline{margin-top:30px}.scorebar{padding:9px 22px}.board-frame{padding:8px}footer{margin-top:12px}.tray-label{margin-top:5px}}
.board-frame{background-image:url('assets/board-frame.webp');padding:5%}.modalinner{background-image:linear-gradient(#10292b66,#10292b66),url('assets/modal-panel.webp');padding:34px}.board-frame #particles{inset:5%}@media(max-width:760px){.board-frame{padding:5%}.modalinner{padding:26px}}
@media(max-width:760px) and (max-height:700px){header{padding:7px 12px;height:48px}.icon{width:34px;height:34px}.top-actions .small{min-height:34px;padding:6px 14px}main{gap:6px}.chapter{font-size:8px}h1{font-size:21px;margin:4px 0}#sceneSubtitle{font-size:9px;margin:2px 0}#keywords{margin-top:5px}#keywords span{padding:5px 12px;font-size:9px}.story>#viewBtn{top:46px;font-size:8px}.scorebar{height:54px;padding:7px 15px}#score{font-size:25px}.board-frame{max-width:calc(100svh - 330px);margin:auto}.tray-label{margin:3px 2px 0;min-height:34px}.tray-label .small{min-height:34px;padding:5px 17px}#tray{gap:7px}.piece{height:58px}.mini img,.mini i{width:16px;height:16px}.bottomline{height:28px;margin:0 2px}.bottomline .textbtn{min-height:28px}footer{margin:7px auto}.scorebar small{font-size:8px}}
.cell{background-image:url('assets/empty-cell.webp')}.cell:not(.filled){opacity:.78}.cell.filled{background:none}.cell.preview{opacity:1}
body.reduced-motion *,body.reduced-motion *::before,body.reduced-motion *::after{animation:none!important;transition:none!important}
/* Portrait v2: the play surface owns the viewport; secondary actions live in the menu. */
.menu-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:14px}.menu-actions button{min-height:44px;padding:10px 14px}dialog{max-height:calc(100dvh - 32px - env(safe-area-inset-top) - env(safe-area-inset-bottom));overflow:auto}.modalinner{min-height:0}#closeModal{position:sticky;bottom:0;z-index:1}dialog .small{min-height:44px}
@media(max-width:760px) and (orientation:portrait){
 body{height:100svh;height:100dvh;min-height:0;overflow:hidden;display:flex;flex-direction:column;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}
 header{flex:0 0 48px;height:48px;min-height:48px;padding:0 12px;width:100%;max-width:480px;align-self:center;gap:8px}.wordmark{font-size:17px;letter-spacing:.17em}.top-actions{gap:0}.top-actions #galleryBtn{display:none}.top-actions .icon{width:44px;height:44px;padding:4px}
 main{flex:1;min-height:0;width:100%;max-width:480px;margin:0;align-self:center;padding:0 12px 8px;display:flex;flex-direction:column;gap:4px;align-items:stretch}
 .story{flex:0 0 62px;height:62px;min-height:62px;text-align:center;align-self:stretch;overflow:visible}.story .eyebrow,.story .tagline,#sceneSubtitle{display:none}.chapter{font-size:8px;line-height:10px;margin:0;letter-spacing:.15em}h1{font-size:21px;line-height:26px;margin:1px 0 2px;letter-spacing:.04em}#keywords{height:23px;margin:0;justify-content:center;gap:6px}#keywords span{font-size:10px;line-height:15px;padding:4px 14px;white-space:nowrap}.story>#viewBtn{display:none;position:static}
 .game{flex:1;min-height:0;width:100%;display:grid;grid-template-rows:44px minmax(0,1fr)78px 48px;gap:4px;align-items:stretch}
 .scorebar{grid-row:1;height:44px;min-height:44px;margin:0;padding:0 13px 0 20px;gap:12px}.scorebar>div:first-child{display:flex;align-items:baseline;gap:6px}.scorebar small{font-size:8px;letter-spacing:.08em}.scorebar #score{font-size:26px;line-height:1}.scorebar .next{font-size:10px}.scorebar progress{height:3px;margin-top:5px}.scorebar .icon{height:44px;width:44px;padding:6px;flex-shrink:0}
 .board-frame{grid-row:2;align-self:center;justify-self:center;margin:0;width:min(calc(100vw - 24px - env(safe-area-inset-left) - env(safe-area-inset-right)),calc(100dvh - 304px - env(safe-area-inset-top) - env(safe-area-inset-bottom)));max-width:100%;height:auto;aspect-ratio:1;padding:clamp(8px,2.8vw,12px)}
 #board{gap:2px;width:100%;height:100%;aspect-ratio:1}.board-frame #particles{inset:clamp(8px,2.8vw,12px)}
 #tray{grid-row:3;height:78px;min-height:78px;gap:8px;align-items:stretch}.piece{height:78px;min-height:78px;padding:8px 5px;position:relative;min-width:0}.mini img,.mini i{width:15px;height:15px}.piece.selected{outline:2px solid #ffe0a0;outline-offset:-3px;filter:brightness(1.25)}.piece.selected:after{content:'選択中';position:absolute;bottom:3px;left:0;right:0;text-align:center;font-size:8px;line-height:10px;color:#fff4cc;text-shadow:0 1px 2px #000}
 .tray-label{grid-row:4;margin:0;min-height:48px;height:48px;gap:10px;padding:0 2px;font-size:10px}.tray-label #hint{line-height:1.6;max-width:calc(100% - 100px)}.tray-label .small{height:48px;min-height:48px;min-width:92px;padding:8px 20px;font-size:13px}.bottomline,footer{display:none}
 dialog{width:calc(100% - 24px);max-width:450px;margin:auto;max-height:calc(100dvh - 24px - env(safe-area-inset-top) - env(safe-area-inset-bottom));padding:0}.modalinner{padding:22px}.modalinner h2{font-size:23px;margin:8px 0 14px}.modalinner label{margin:14px 0;line-height:1.5}.modalinner p,.modalinner li{font-size:13px;line-height:1.75}.modalinner .primary{min-height:48px}.modalinner #closeModal{margin-top:12px}.modalinner input[type=range]{height:30px}.modalinner input[type=checkbox]{width:20px;height:20px;vertical-align:middle}.modalinner label:has(input[type=checkbox]){min-height:44px;display:flex;gap:8px;align-items:center}.gallery-card{min-height:64px}#toast{bottom:calc(132px + env(safe-area-inset-bottom));padding:9px 15px;font-size:12px}
 body.viewing main{display:flex;justify-content:flex-start}.viewing .story{height:auto;margin-top:12vh}.viewing .story>#viewBtn{display:inline-block;min-height:48px;margin-top:18px}.viewing .game{display:none}.viewing header{visibility:hidden}
}
@media(max-width:760px) and (orientation:portrait){.game{grid-template-rows:44px minmax(0,1fr)92px 48px}.board-frame{width:min(calc(100vw - 24px - env(safe-area-inset-left) - env(safe-area-inset-right)),calc(100dvh - 318px - env(safe-area-inset-top) - env(safe-area-inset-bottom)))}#tray,.piece{height:92px;min-height:92px}.mini img,.mini i{width:var(--piece-cell,20px);height:var(--piece-cell,20px)}}
#audioDetails{margin-top:16px}#audioDetails summary{min-height:48px;display:flex;align-items:center;justify-content:center;cursor:pointer;background:url('assets/button.webp') center/100% 100%;font-size:14px}#audioDetails summary:after{content:' ＋';margin-left:12px}#audioDetails[open] summary:after{content:' −'}.menu-note{font-size:11px!important}.menu-actions{margin-top:0}
#dragGhost .mini img,#dragGhost .mini i{width:var(--drag-cell,24px);height:var(--drag-cell,24px)}
:root{--game-vh:100vh}@supports(height:100svh){:root{--game-vh:100svh}}@supports(height:100dvh){:root{--game-vh:100dvh}}
@media(max-width:760px) and (orientation:portrait){body{height:var(--game-vh)}.board-frame{width:min(calc(100vw - 24px - env(safe-area-inset-left) - env(safe-area-inset-right)),calc(var(--game-vh) - 318px - env(safe-area-inset-top) - env(safe-area-inset-bottom)))}dialog{max-height:calc(var(--game-vh) - 24px - env(safe-area-inset-top) - env(safe-area-inset-bottom))}}

/* Active portrait play: stage title above a nearly edge-to-edge board. */
@media(max-width:760px) and (orientation:portrait){
 body.playing header{position:absolute;top:env(safe-area-inset-top);right:env(safe-area-inset-right);width:48px;height:48px;min-height:0;padding:2px;z-index:2;display:block}
 body.playing .wordmark{display:none}
 body.playing main{padding:0 4px 4px;gap:4px}
 body.playing .story{height:54px;min-height:54px;flex-basis:54px}
 body.playing .chapter{display:none}
 body.playing h1{font-size:22px;line-height:28px;margin:2px 48px 0 8px;text-align:left;white-space:nowrap}
 body.playing #keywords{height:24px;justify-content:flex-start;margin:0 48px 0 6px;gap:2px}
 body.playing #keywords span{font-size:10px;line-height:16px;padding:3px 10px}
 body.playing .game{grid-template-rows:44px minmax(0,1fr)92px 44px;gap:4px}
 body.playing .scorebar{padding:0 4px 0 10px;background:linear-gradient(90deg,#10292be8,#10292b90);border:1px solid #b6955d80;border-radius:6px;gap:8px}
 body.playing .board-frame{width:min(calc(100vw - 8px - env(safe-area-inset-left) - env(safe-area-inset-right)),calc(var(--game-vh) - 254px - env(safe-area-inset-top) - env(safe-area-inset-bottom)));max-width:100%;padding:1px;border:1px solid #d9b97c;background:#10292b80;border-radius:5px}
 body.playing #board{gap:1px}
 body.playing .board-frame #particles{inset:2px}
 body.playing #tray{gap:4px}
 body.playing .tray-label{height:44px;min-height:44px;gap:4px}
 body.playing .tray-label .small{height:44px;min-height:44px}
 body.playing.viewing header{visibility:hidden}
 body.playing.viewing .story{height:auto;min-height:54px}
}

/* Selection uses shape, text and contrast as well as color. */
.piece.selected,body.playing .piece.selected{position:relative;outline:4px solid #fff3b0;outline-offset:-4px;box-shadow:inset 0 0 0 7px #102627,0 0 12px #ffe496a6;filter:brightness(1.12)}
.piece.selected:after,body.playing .piece.selected:after{content:'✓ 選択中';position:absolute;top:-14px;bottom:auto;left:50%;right:auto;transform:translateX(-50%);padding:2px 7px;border-radius:0 0 5px 5px;background:#fff3b0;color:#102627;font-size:11px;font-weight:700;line-height:14px;white-space:nowrap;text-shadow:none;pointer-events:none}
.piece:focus-visible{outline:3px dashed #fff;outline-offset:2px}
@media(max-width:760px) and (orientation:portrait){.piece.selected:after,body.playing .piece.selected:after{top:1px}.piece.selected .mini{transform:translateY(8px)}}