:root{color-scheme:light;--paper:#f5f6f0;--ink:#243d36;--muted:#7b8881;--line:#dce3d8;--blue:#368ae5;--purple:#916bd7;--green:#579864;--red:#d86f69;--font:Inter,"Segoe UI","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;text-align:center;gap:4px}button:focus-visible,a:focus-visible{outline:3px solid var(--blue);outline-offset:4px}button:hover{filter:brightness(.96)}.app{max-width:1200px;margin:auto;padding:0 42px}.masthead{height:87px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-size:13px;font-weight:700;letter-spacing:1px}.brand-symbol{display:grid;place-items:center;background:var(--ink);color:white;border-radius:9px;font-size:18px;letter-spacing:-3px;width:33px;height:33px;padding-right:3px}.brand-en{font-size:10px;font-weight:500;color:var(--muted);margin-left:3px}.version{font-size:10px;letter-spacing:1.4px;color:var(--muted);display:flex;align-items:center;gap:8px}.version i{width:6px;height:6px;background:var(--green);border-radius:50%}.intro{display:flex;align-items:center;justify-content:space-between;padding:36px 0 28px}.eyebrow{font-size:9px;letter-spacing:1.7px;font-weight:600;color:var(--muted);margin:0 0 12px}h1{font-size:46px;line-height:1.15;letter-spacing:-2px;font-weight:650;margin:0}h1 span{font-size:17px;letter-spacing:2px;font-weight:500;display:inline-block;margin-left:20px;vertical-align:middle}.subtitle{font-size:12px;color:var(--muted);margin:14px 0 0;letter-spacing:.4px}.chapter{display:flex;gap:14px;align-items:center}.chapter>span{font-size:45px;font-weight:300;color:#b1beb0}.chapter p{font-size:9px;letter-spacing:1px;line-height:1.9;color:var(--muted)}.play-layout{display:grid;grid-template-columns:minmax(0,1fr) 292px;gap:24px;align-items:start}.game-panel{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 8px 28px #344b3305}.game-toolbar{height:57px;display:flex;align-items:center;justify-content:space-between;padding:0 20px;border-bottom:1px solid var(--line);font-size:11px}.game-toolbar>span:first-child{display:flex;align-items:center;gap:7px}.game-toolbar b{font-weight:500}.live-dot{background:#92a795;width:5px;height:5px;border-radius:50%}.level-tag{color:#8e9b93;font-size:10px;letter-spacing:1px}.game-toolbar button{border:0;background:transparent;color:#6e8175;min-height:44px;font-size:18px;padding:0 5px}.game-toolbar button span{font-size:11px}.game-toolbar button>.button-content{font:inherit}.game-toolbar .button-content>span{margin-left:4px}.board-wrap{position:relative;aspect-ratio:1;background:#fbfcf8;isolation:isolate}canvas{display:block;width:100%;height:100%;touch-action:none;cursor:grab;user-select:none;-webkit-user-select:none}canvas.dragging{cursor:grabbing}.board-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#f8faf354;padding:18px;pointer-events:none}.board-overlay[hidden]{display:none}.overlay-card{pointer-events:auto;text-align:center;background:#fffffff2;border:1px solid #dce3d8;box-shadow:0 18px 60px #34523b12;border-radius:18px;width:350px;padding:27px 24px 22px}.overlay-symbol{font-size:31px;letter-spacing:6px;color:var(--purple);margin-bottom:18px}.overlay-card .eyebrow{font-size:8px;letter-spacing:1.3px}.overlay-card h2{font-size:18px;font-weight:600;margin:0 0 12px}.overlay-card>p:not(.eyebrow){font-size:12px;color:#7b8881;line-height:1.9}.primary-button{border:0;border-radius:9px;background:var(--ink);color:white;min-height:46px;padding:12px 24px;font-size:12px;margin-top:8px;min-width:180px}.primary-button span{font-size:17px}.overlay-card .overlay-foot{font-size:10px!important;margin:15px 0 0}.board-footer{height:44px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 18px;font-size:10px;color:#7b8881}.safe-note{color:#98a398}.toast{position:absolute;bottom:18px;left:50%;transform:translate(-50%,8px);background:#283f36ed;border-radius:30px;color:white;font-size:11px;padding:10px 17px;opacity:0;transition:opacity .18s,transform .18s;pointer-events:none;white-space:nowrap;max-width:96%;text-align:center}.toast.visible{opacity:1;transform:translate(-50%,0)}.sidebar{display:flex;flex-direction:column;gap:16px}.rule-card,.progress-card{border:1px solid var(--line);border-radius:13px;padding:20px}.rule-card{background:#edf1e8;transition:background .2s,border-color .2s}.rule-card.sync{background:#efebf8;border-color:#d7c9ec}.card-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}.card-heading h2{font-size:12px;letter-spacing:.5px;margin:0;font-weight:600}.tiny-label{font-size:8px;letter-spacing:1.4px;color:#8a9689}.rule-name{display:flex;align-items:center;justify-content:space-between;margin-top:20px}.rule-name>span:first-child{font-size:23px;font-weight:600;letter-spacing:-.6px}.rule-name>span:last-child{font-size:8px;letter-spacing:1px;border:1px solid #c8d2c0;border-radius:4px;padding:4px 6px;color:#7b8872}.direction-diagram{display:flex;justify-content:space-between;align-items:center;padding:20px 8px 4px}.direction-diagram>div{display:grid;grid-template-columns:28px 22px;gap:8px;align-items:center}.mini-player{width:28px;height:28px;color:white;display:grid;place-items:center;font-size:10px}.main-player{border-radius:50%;background:var(--blue)}.twin-player{border-radius:7px;background:var(--purple)}.direction-diagram b{font-size:24px;font-weight:400}.direction-diagram small{grid-column:1/-1;font-size:9px;text-align:center;color:#86917f}.relation{color:#abb5a6;font-size:20px}.rule-card>p{font-size:12px;text-align:center;margin:14px 0 0}.rule-card>p.rule-extra{font-size:10px;color:#81907c;line-height:1.8;margin-top:8px}.progress-card{background:#ffffff77}.score-line{display:flex;align-items:baseline;justify-content:space-between;margin:18px 0 14px}.score-line strong{font-size:35px;line-height:1;font-weight:500;letter-spacing:-1px}.score-line strong span{font-size:17px;color:#a3afa1}.score-line>span{font-size:10px;color:#8b9786}.score-line b{font-weight:500;font-size:14px;color:#54734c}.progress-track{height:4px;background:#e4eadd;border-radius:9px;overflow:hidden}.progress-track>div{height:100%;width:0;background:#7ba66b;transition:width .25s}.progress-card p{font-size:10px;line-height:1.9;color:#889381;margin:14px 0 0}.field-guide{padding:8px 6px 0}.field-guide ul{padding:0;margin:17px 0 0;list-style:none;display:flex;flex-direction:column;gap:16px}.field-guide li{display:flex;align-items:center;gap:13px}.legend-icon{width:30px;height:30px;border-radius:8px;display:grid;place-items:center;font-size:20px}.green-icon{background:#e6eedf;color:#78a25e}.mirror-icon{background:#ece7f4;color:#8c75b5}.danger-icon{background:#f6e5df;color:#cf7c70}.field-guide b{font-size:11px;font-weight:500;display:block}.field-guide small{font-size:10px;color:#939d8e;display:block;margin-top:4px}.tip{border-top:1px solid var(--line);padding-top:16px;margin:4px 6px 0;color:#8b9784;font-size:10px;line-height:1.9}.tip span{display:block;color:#657e5d;margin-bottom:4px}.page-footer{display:flex;justify-content:space-between;gap:16px;padding:23px 0 27px;font-size:9px;letter-spacing:.7px;color:#95a08e}.page-footer b{padding:0 8px;font-weight:400}.noscript{padding:20px;background:#fff0e9}
@media(min-width:1200px){.app{max-width:1120px}.play-layout{grid-template-columns:minmax(0,1fr) 280px}}
@media(max-width:800px){.app{padding:0 20px}.masthead{height:65px}.intro{padding:26px 0 22px}h1{font-size:36px}h1 span{display:block;margin:9px 0 0;font-size:14px;letter-spacing:3px}.chapter{display:none}.play-layout{grid-template-columns:minmax(0,1fr) 230px;gap:16px}.rule-card,.progress-card{padding:16px}.brand-en{display:none}.rule-name>span:first-child{font-size:20px}.game-toolbar{padding:0 12px}.level-tag{display:none}.board-footer{padding:0 12px}.safe-note{display:none}.overlay-card{padding:20px 12px}.overlay-card h2{font-size:16px}}
@media(max-width:620px){.app{padding:0 14px}.masthead{height:57px}.brand{font-size:11px;gap:7px}.brand-symbol{height:27px;width:27px;font-size:16px}.version{font-size:8px;letter-spacing:.8px}.intro{padding:22px 2px 20px}.intro .eyebrow{font-size:8px;letter-spacing:1.2px}h1{font-size:35px}h1 span{display:inline-block;font-size:12px;margin:0 0 0 12px;letter-spacing:1px}.subtitle{font-size:10px;line-height:1.8;margin-top:10px}.play-layout{display:flex;flex-direction:column;gap:16px}.game-panel{width:100%;border-radius:12px}.game-toolbar{height:46px}.board-footer{height:37px;font-size:9px}.sidebar{width:100%;display:grid;grid-template-columns:1fr 1fr;gap:12px}.rule-card,.progress-card{padding:14px}.rule-name{margin-top:13px;flex-wrap:wrap;gap:5px}.rule-name>span:first-child{font-size:19px}.rule-name>span:last-child{font-size:7px;padding:3px 4px}.tiny-label{font-size:7px;letter-spacing:.5px}.card-heading h2{font-size:11px}.direction-diagram{padding:14px 0 0}.direction-diagram>div{grid-template-columns:22px 16px;gap:4px}.mini-player{width:22px;height:22px;font-size:9px}.direction-diagram b{font-size:20px}.relation{font-size:15px}.rule-card>p{font-size:10px;margin-top:12px}.rule-card>p.rule-extra{font-size:9px;line-height:1.7}.score-line{margin-top:24px}.score-line strong{font-size:31px}.score-line>span{font-size:9px}.progress-card p{font-size:9px;margin-top:20px}.field-guide{grid-column:1/-1;padding:8px 4px}.field-guide ul{flex-direction:row;gap:8px;justify-content:space-between}.field-guide li{gap:6px;align-items:flex-start;flex:1}.legend-icon{width:23px;height:23px;flex-shrink:0;font-size:16px}.field-guide b{font-size:10px}.field-guide small{font-size:9px;line-height:1.6}.tip{grid-column:1/-1;margin:0 4px;font-size:10px}.tip span{display:inline;margin-right:9px}.page-footer{padding:22px 0;flex-direction:column;gap:8px;font-size:8px}.overlay-card{width:285px;padding:19px 16px 16px;border-radius:13px}.overlay-symbol{font-size:26px;margin-bottom:12px}.overlay-card .eyebrow{font-size:7px}.overlay-card h2{font-size:16px}.overlay-card>p:not(.eyebrow){font-size:11px}.overlay-card .overlay-foot{font-size:9px!important;margin-top:12px}.primary-button{min-height:44px;margin-top:3px}.toast{font-size:10px;bottom:12px;padding:9px 13px}}
.toolbar-rule{color:#8b76ac;background:#f1edf7;padding:5px 9px;border-radius:5px;font-size:10px;white-space:nowrap}
.level-controls{display:flex;align-items:center;gap:8px;padding:6px 14px;border-bottom:1px solid var(--line);font-size:11px}.level-controls select{min-width:0;max-width:220px;flex:1;min-height:44px;background:#f5f6f0;border:1px solid var(--line);border-radius:6px;color:var(--ink);font:inherit}.level-controls button{min-height:44px;border:0;background:#e8eee2;border-radius:6px;color:var(--ink);font-size:11px}.level-controls>span{font-size:9px;color:var(--muted)}#mechanism-status{color:#ae6357}#storage-status{color:#94733c}#level-hint{display:inline;font-weight:400}.tip #level-hint{color:inherit}.progress-track.endless{display:none}@media(max-width:360px){.level-controls{padding:4px 8px;gap:4px}.level-controls>span{display:none}}
.skin-switch{display:flex;align-items:center;gap:6px;padding:3px 14px;border-bottom:1px solid var(--line);font-size:10px;color:var(--muted);background:#fafbf7}.skin-switch>span{margin-right:3px}.skin-switch button{min-height:44px;padding:0 12px;border:0;border-radius:7px;color:#778277;background:transparent;font-size:11px}.skin-switch button[aria-pressed="true"]{background:#e8eee2;color:#334f36;font-weight:600}.skin-switch small{margin-left:auto;font-size:8px;letter-spacing:.7px}body[data-skin="characters"] .mini-player{background:transparent}.avatar-mini{width:100%;height:100%;cursor:default;touch-action:auto}@media(max-width:620px){.skin-switch{padding:2px 10px;gap:3px}.skin-switch button{font-size:10px;padding:0 9px}.skin-switch small{font-size:7px;letter-spacing:0}}@media(max-width:360px){.skin-switch small{display:none}}
@media(max-width:360px){.toolbar-rule{font-size:9px;padding:4px 6px}.game-toolbar{gap:5px}.game-toolbar button span{font-size:10px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}}
/* Mobile H5: only the play surface owns gestures; page zoom/scroll stays native. */
#board{touch-action:none;-webkit-touch-callout:none}
.avatar-mini{touch-action:auto}
.app{padding-left:max(14px,env(safe-area-inset-left));padding-right:max(14px,env(safe-area-inset-right));padding-bottom:env(safe-area-inset-bottom)}
button,select{min-height:44px;min-width:44px;touch-action:manipulation}
select:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
#field-progress{font-size:13px;color:var(--ink);white-space:nowrap}
.board-overlay{touch-action:pan-y pinch-zoom}
@media(max-width:620px){
  .app{padding-left:max(8px,env(safe-area-inset-left));padding-right:max(8px,env(safe-area-inset-right))}
  .masthead{height:44px}.intro{padding:12px 2px}.intro .eyebrow,.subtitle{display:none}
  h1{font-size:27px;letter-spacing:-1px}h1 span{font-size:12px}
  .level-controls{padding:3px 8px}.level-controls select{font-size:16px}
  .game-toolbar{height:44px}.game-toolbar button{padding:0 6px}
  .skin-switch{padding:0 8px}.skin-switch small{display:none}.skin-switch button{font-size:12px}
  .board-footer{min-height:38px;height:auto;padding:8px;font-size:10px;gap:6px}
  .board-overlay{padding:10px}.overlay-card{max-width:100%;padding:14px 12px}
  .overlay-symbol{font-size:22px;margin-bottom:5px}.overlay-card .eyebrow{margin-bottom:8px}
  .overlay-card h2{margin-bottom:6px}.overlay-card>p:not(.eyebrow){margin:8px 0;line-height:1.6}
  .overlay-card .overlay-foot{margin-top:8px}.primary-button{font-size:14px}
  .direction-diagram>div{grid-template-columns:32px 16px}.mini-player{width:32px;height:32px}
  .rule-card>p.rule-extra,.progress-card p{font-size:11px}
  .toast{white-space:normal;width:max-content;max-width:90%;font-size:11px}
}
@media(max-height:500px) and (orientation:landscape){
  .intro,.masthead{display:none}.app{max-width:1000px}.play-layout{grid-template-columns:minmax(300px,1fr) 240px;margin-top:8px}
}
/* v1.1.1: one engine, compact play surface, details available while paused. */
.board-wrap{width:100%}
[hidden]{display:none!important}
.focus-toolbar{display:none}
.play-status{display:flex;gap:10px;padding:8px 12px;background:#f1f4ec;font-size:12px;line-height:1.45;min-height:40px}
#play-rule{white-space:nowrap;color:#846aa4}#play-message{color:#8c5145}
.result-actions{display:flex;gap:10px;justify-content:center}.result-actions button{flex:1;min-width:0;padding:12px 8px;font-size:14px}
#result-next{background:#405d42;color:#fff}.board-overlay{pointer-events:auto}
.help-panel{position:fixed;z-index:30;inset:0;background:rgba(32,49,39,.5);display:flex;align-items:center;justify-content:center;padding:12px}
.help-sheet{width:620px;max-width:100%;max-height:90vh;overflow-y:auto;overscroll-behavior:contain;background:#f7f9f1;border-radius:16px;padding:18px;color:#243d36}
.help-sheet>header{display:flex;align-items:center;justify-content:space-between;gap:10px;position:sticky;top:-18px;background:#f7f9f1;z-index:1;padding:8px 0}
.help-sheet h2{font-size:18px;margin:0}.help-sheet p{font-size:14px;line-height:1.6}.help-sheet button{border:1px solid #c6d2c0;border-radius:8px;padding:9px 12px;background:#e7eddf;color:#243d36;font-size:14px}
.help-sheet .sidebar{display:flex;width:100%;margin-top:12px}.help-sheet .skin-switch{display:flex;flex-wrap:wrap}.help-actions{display:flex;gap:12px;margin:16px 0}.help-actions button{flex:1}.help-sheet small{font-size:11px}
body.help-visible{overflow:hidden}
/* v1.2.1: focus intent comes from game state, never JS device detection. */
@media (max-width:620px), (max-width:900px) and (pointer:coarse){
body.focus-mode{overflow:hidden}
.focus-mode .app{padding:8px;padding-top:max(8px,env(safe-area-inset-top));padding-bottom:max(8px,env(safe-area-inset-bottom))}
.focus-mode .masthead,.focus-mode .intro,.focus-mode .page-footer,.focus-mode .game-panel>.level-controls,.focus-mode .game-toolbar,.focus-mode .game-panel>.skin-switch,.focus-mode .play-layout>.sidebar,.focus-mode .board-footer{display:none}
.focus-mode .play-layout{display:block;margin:0}
.focus-mode .game-panel{width:100%;max-width:var(--play-size);margin:0 auto;border-radius:10px}
.focus-mode .focus-toolbar{display:grid;grid-template-columns:minmax(0,1fr) auto 44px 44px;align-items:center;gap:4px;padding:4px 6px;min-height:52px;background:#f5f7ef}
.focus-toolbar strong{font-size:14px;line-height:1.25}.focus-toolbar span{font-size:14px;white-space:nowrap}
.focus-toolbar button{width:44px;height:44px;border:0;border-radius:8px;background:#e7eddf;color:#294237;font-size:20px}
.focus-mode .play-status{font-size:12px;min-height:52px;padding:7px;gap:6px;align-items:center}
.focus-mode .overlay-card{padding:14px 10px;max-width:95%}.focus-mode .overlay-card h2{font-size:18px}
.focus-mode .overlay-card .overlay-symbol{font-size:24px;margin-bottom:4px}.focus-mode .overlay-card .overlay-foot{font-size:11px!important}
.focus-mode .result-actions button{min-height:48px;font-size:14px}
@media(max-height:440px){.focus-mode .overlay-card .eyebrow,.focus-mode .overlay-symbol,.focus-mode .overlay-foot{display:none}.focus-mode .overlay-card>p{margin:6px 0}}

}
@media(max-height:440px){.help-sheet{max-height:94vh}}
/* Opening & Resume v1.2.0 — a display state, independent of engine readiness. */
.opening{min-height:100svh;min-height:100vh;box-sizing:border-box;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:40px 20px;background:radial-gradient(circle at 50% 40%,#fffaf280,transparent 55%);overflow:hidden}
.cover-edition{font-size:10px;letter-spacing:3px;color:#7e8d78;margin:0 0 26px}
.opening h1{font-size:clamp(34px,6vw,64px);font-weight:500;letter-spacing:-2px;line-height:1.1;margin:0;color:#344639}
.opening h1 span{display:block;font-size:19px;font-weight:400;letter-spacing:9px;padding-left:9px;margin-top:16px}
.cover-tagline{font-size:13px;color:#84917e;letter-spacing:2px;margin:22px 0 0}
.cover-scene{position:relative;width:min(440px,100%);height:260px;margin:16px 0;isolation:isolate;background-image:radial-gradient(#c7d3bc 1px,transparent 1px);background-size:22px 22px;mask-image:linear-gradient(transparent,#000 16%,#000 84%,transparent)}
.mirror-line{position:absolute;left:50%;top:8%;bottom:8%;width:1px;background:linear-gradient(transparent,#a897bb,transparent);animation:mirror-breathe 5s ease-in-out infinite}
.mirror-line span{position:absolute;top:43%;left:-13px;width:27px;background:#f5f6f0;color:#9b86b4;font-size:22px}
.cover-character{position:absolute;top:56px;width:120px;animation:cover-arrive .65s ease-out both}
.cover-character canvas{display:block;width:120px;height:120px}
.cover-character span{display:block;font-size:10px;letter-spacing:2px;color:#69796e;margin-top:2px}
.cover-character.wolf{left:calc(25% - 60px)}.cover-character.fox{right:calc(25% - 60px);animation-delay:.12s}
.cover-orb{position:absolute;left:calc(50% - 5px);top:26px;width:10px;height:10px;border-radius:50%;background:#91b573;box-shadow:0 0 0 7px #91b57318;animation:orb-breathe 3.4s ease-in-out infinite}
.cover-path{position:absolute;bottom:29px;color:#a8b7a3;font-size:21px}.cover-path.left{left:24%}.cover-path.right{right:24%}
.cover-actions{display:flex;flex-direction:column;gap:10px;align-items:center}.cover-actions .primary-button{min-width:210px;min-height:52px;font-size:16px;letter-spacing:2px}
.quiet-button{border:0;background:none;color:#6e806c;font:inherit;min-height:44px;padding:8px 20px;cursor:pointer}.quiet-button:hover{color:#334f30}
.cover-note{font-size:10px;letter-spacing:2px;color:#99a291;margin:22px 0 0}
body[data-screen="cover"] .help-sheet .progress-card,body[data-screen="cover"] .help-sheet .tip,body[data-screen="cover"] .help-sheet .rule-extra{display:none}
.help-actions{flex-wrap:wrap}button:focus-visible,a:focus-visible{outline:2px solid #8a739e;outline-offset:4px}
@keyframes cover-arrive{from{opacity:0;transform:translateY(9px)}to{opacity:1;transform:translateY(0)}}
@keyframes mirror-breathe{50%{opacity:.45}}@keyframes orb-breathe{50%{box-shadow:0 0 0 11px #91b57308}}
@media(max-height:700px){.opening{padding:20px 16px}.cover-edition{margin-bottom:18px}.cover-scene{height:210px;margin:8px 0}.cover-character{top:32px}.cover-note{margin-top:8px}.cover-tagline{margin-top:15px}}
@media(max-height:440px) and (min-width:620px){.opening{display:grid;grid-template-columns:1fr 1fr;gap:8px;min-height:100vh}.cover-scene{grid-column:2;grid-row:1/6;margin:auto;height:230px}.cover-edition,.cover-tagline,.cover-note{margin:0}.opening h1{font-size:34px}.opening h1 span{font-size:15px;margin-top:8px}}
@media(prefers-reduced-motion:reduce){.opening *{animation:none!important;transition:none!important}}
.opening{min-height:100vh;min-height:100svh;padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right));padding-top:max(20px,env(safe-area-inset-top));padding-bottom:max(20px,env(safe-area-inset-bottom))}
.opening h1 span{margin-left:0}.cover-character canvas{touch-action:auto;cursor:default}