:root{--ink:#26251f;--sand:#e9d59c;--sand-light:#f7edcf;--red:#bd3d32;--blue:#245e7b;--iron:#687278;--moss:#4f6b50;--danger:#9e2e2e;--gold:#b78320;--shadow:rgba(49,39,22,.27)}
*{box-sizing:border-box}html{background:#b9a87c;color:var(--ink);font-family:"Yu Mincho","Hiragino Mincho ProN",serif}body{min-width:320px;margin:0;overflow-x:hidden;background:radial-gradient(circle at 50% 10%,#f6e9bd 0 22%,#c9b584 68%,#a9976d 100%)}button{font:inherit}.hidden{display:none!important}.garden-shell{width:min(100%,1060px);min-height:100vh;margin:auto;background:var(--sand-light);box-shadow:0 0 38px rgba(45,35,20,.35)}.screen{min-height:100vh;padding:clamp(20px,4vw,48px)}
.start-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:linear-gradient(90deg,rgba(84,72,43,.12) 1px,transparent 1px),linear-gradient(rgba(84,72,43,.08) 1px,transparent 1px),var(--sand-light);background-size:42px 42px}.sun-seal{display:flex;align-items:center;gap:8px}.sun-seal span{display:grid;place-items:center;width:58px;height:58px;border-radius:50%;color:white;background:var(--red);border:6px double #f9e9bd;font:900 1.8rem system-ui}.sun-seal span:last-child{background:var(--blue)}.sun-seal i{width:54px;border-top:9px solid var(--iron);box-shadow:0 8px 0 -3px rgba(0,0,0,.15)}.eyebrow{margin:14px 0 4px;font:900 .74rem system-ui;letter-spacing:.14em;color:#73402d}.start-screen h1{margin:2px 0 10px;line-height:1.08}.start-screen h1 span{display:block;font-size:clamp(2.2rem,8vw,5.2rem);letter-spacing:.03em}.start-screen h1 small{display:block;margin-top:10px;font-size:clamp(1rem,3vw,1.45rem);letter-spacing:.16em}.raked-demo{display:flex;align-items:center;justify-content:center;gap:10px;width:min(100%,620px);margin:14px 0;padding:22px 12px;border-top:3px solid #89774e;border-bottom:3px solid #89774e;background:repeating-radial-gradient(ellipse at center,transparent 0 12px,rgba(90,76,45,.13) 13px 14px)}.raked-demo em{padding:4px 9px;background:var(--sand-light);font-style:normal;font-weight:900}.demo-magnet{display:flex;width:132px;border:4px solid var(--ink);box-shadow:4px 5px 0 var(--shadow)}.demo-magnet.reverse{transform:rotate(180deg)}.demo-magnet i{display:grid;place-items:center;width:50%;height:48px;color:white;background:var(--red);font:900 1.25rem system-ui;font-style:normal}.demo-magnet i:last-child{background:var(--blue)}.start-rules{display:grid;grid-template-columns:repeat(3,1fr);gap:0;width:min(100%,700px);padding:0;margin:8px 0 22px;list-style:none;border:3px solid var(--ink)}.start-rules li{display:grid;gap:5px;padding:13px;border-right:1px solid var(--ink)}.start-rules li:last-child{border:0}.start-rules b{color:var(--red);font-size:1.1rem}.start-rules span{font:700 .82rem/1.5 system-ui}.start-note{font:700 .8rem system-ui}
.seal-button,.utility-button,.pulse-button{min-height:48px;border:3px solid var(--ink);cursor:pointer;font-weight:900;box-shadow:4px 4px 0 var(--shadow);transition:transform .12s,box-shadow .12s}.seal-button{padding:13px 27px;color:#fff;background:var(--red)}.utility-button{padding:9px 14px;background:#fff5d8;color:var(--ink)}.pulse-button{min-height:60px;padding:12px 28px;color:white;background:var(--moss);font-size:1.18rem}.seal-button:hover,.utility-button:hover,.pulse-button:hover{transform:translate(-1px,-1px);box-shadow:6px 6px 0 var(--shadow)}.seal-button:active,.utility-button:active,.pulse-button:active{transform:translate(3px,3px);box-shadow:1px 1px 0 var(--shadow)}button:disabled{cursor:not-allowed;opacity:.45;filter:grayscale(.4)}
.play-screen{padding-top:18px}.garden-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;border-bottom:6px double var(--ink)}.garden-header h2{margin:0 0 10px;font-size:clamp(1.4rem,4vw,2.25rem)}.garden-header .eyebrow{margin:0}.compact-hud{display:flex;justify-content:flex-end;gap:22px;padding:9px 2px;font:800 .83rem system-ui}.compact-hud b{color:var(--red);font-size:1.06rem}.lesson-ribbon{margin:4px 0 12px;padding:10px 14px;border-left:8px solid var(--blue);background:#fff6dc;font:750 .9rem/1.55 system-ui}
.garden-world{position:relative;overflow:hidden;padding:22px 18px 14px;border:9px solid #554931;background:var(--sand);box-shadow:inset 0 0 0 4px #9c8759,8px 9px 0 var(--shadow);touch-action:pan-y}.sand-lines{position:absolute;inset:-35%;background:repeating-radial-gradient(ellipse at center,transparent 0 19px,rgba(91,74,40,.12) 20px 22px);transform:rotate(-8deg);pointer-events:none}.danger-edge{position:absolute;z-index:1;inset:0 auto 0 0;width:0;background:repeating-linear-gradient(90deg,rgba(158,46,46,.68),rgba(158,46,46,.68) 8px,rgba(95,38,31,.42) 8px,rgba(95,38,31,.42) 15px);transition:width .3s;pointer-events:none}.danger-edge span{position:absolute;left:4px;top:50%;transform:translateY(-50%);color:white;writing-mode:vertical-rl;font:900 .65rem system-ui;letter-spacing:.12em}.garden-world.warning .danger-edge{width:28px}.garden-world.critical .danger-edge{width:48px;animation:sandWarn 1.2s steps(2,end) infinite}.magnet-board{position:relative;z-index:2;display:grid;gap:7px;width:min(100%,720px);margin:auto;touch-action:pan-y}.board-cell{position:relative;display:grid;place-items:center;min-width:0;aspect-ratio:1;border:2px dashed rgba(61,52,34,.38);background:rgba(255,250,221,.34);touch-action:pan-y}.board-cell:before{content:attr(data-coordinate);position:absolute;left:3px;top:1px;color:rgba(38,37,31,.35);font:600 .48rem system-ui}.board-cell.drag-target{outline:4px solid #fff;outline-offset:-5px;background:rgba(255,255,255,.66)}.board-cell.on-path{outline:5px solid #e8bd4e;outline-offset:-6px}.board-cell.mismatch{outline:5px dashed var(--danger);outline-offset:-6px}.fixed-tile,.magnet-piece{position:relative;display:grid;place-items:center;width:86%;height:58%;min-height:32px;z-index:3}.terminal{border:4px double var(--ink);background:#f8e6ad;font:900 .7rem system-ui}.terminal:after{content:"";position:absolute;inset:5px;border:2px solid var(--gold)}.material-block{width:82%;height:72%;border:4px solid var(--ink);display:grid;place-items:center;background:#b58c59;font:900 .64rem system-ui;box-shadow:inset 0 0 0 4px rgba(255,255,255,.2)}.material-block.aluminum{background:repeating-linear-gradient(135deg,#d8dce0 0 6px,#aeb6bd 6px 12px)}.iron-tile{width:72%;height:72%;border:4px solid #3f484c;background:#879196;color:white;display:grid;place-items:center;font:900 .6rem system-ui;clip-path:polygon(0 27%,27% 27%,27% 0,73% 0,73% 27%,100% 27%,100% 73%,73% 73%,73% 100%,27% 100%,27% 73%,0 73%)}.star-marker{position:absolute;z-index:1;right:4px;bottom:3px;color:#85560b;font:900 .66rem system-ui}.star-marker:before{content:"◆";margin-right:2px}.magnet-piece{display:flex;border:3px solid var(--ink);box-shadow:3px 4px 0 var(--shadow);cursor:grab;transform:rotate(calc(var(--orientation) * 90deg));transition:transform .18s}.magnet-piece:active{cursor:grabbing}.magnet-piece i{display:grid;place-items:center;width:50%;height:100%;color:white;background:var(--red);font:900 clamp(.68rem,2vw,1rem) system-ui;font-style:normal}.magnet-piece i:last-child{background:var(--blue)}.magnet-piece.selected{outline:5px solid #f3c640;outline-offset:3px}.magnet-piece.selected:after{content:"選択中";position:absolute;top:-22px;left:50%;transform:translateX(-50%) rotate(calc(var(--orientation) * -90deg));padding:2px 5px;color:#211b11;background:#f3c640;white-space:nowrap;font:900 .48rem system-ui}.board-status{position:relative;z-index:2;min-height:42px;margin:13px auto 0;padding:9px 12px;width:min(100%,720px);color:white;background:var(--ink);text-align:center;font:700 .82rem/1.45 system-ui}.release-burst{position:absolute;z-index:8;left:50%;top:45%;padding:12px 22px;color:white;background:var(--moss);border:6px double #fff;opacity:0;transform:translate(-50%,-50%) scale(.5);pointer-events:none;font:900 clamp(1.2rem,5vw,2.6rem) system-ui}.release-burst.go{animation:release .8s ease-out}
.piece-bench{display:grid;grid-template-columns:minmax(150px,.8fr) minmax(240px,1.4fr);gap:12px;margin:15px 0 10px;padding:12px;border-top:4px solid var(--ink);border-bottom:4px solid var(--ink)}.piece-bench h3{margin:0}.piece-bench p{margin:4px 0;font:700 .74rem/1.5 system-ui}.piece-tray{display:flex;flex-wrap:wrap;align-items:center;gap:9px;min-height:67px;padding:8px;background:repeating-linear-gradient(0deg,rgba(71,57,34,.08) 0 1px,transparent 1px 9px)}.piece-tray .magnet-piece{width:92px;height:42px}.piece-actions{grid-column:1/3;display:flex;justify-content:center;gap:10px}.pulse-row{display:grid;grid-template-columns:minmax(160px,.6fr) minmax(260px,1.4fr);align-items:center;gap:14px}.pulse-row p{margin:0;font:750 .78rem/1.55 system-ui}.pulse-row span{color:#7b5311}
.quiz-screen,.result-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.quiet-compass{display:flex;align-items:center;gap:7px;font:900 1.4rem system-ui;color:white}.quiet-compass:first-letter{background:var(--red)}.quiet-compass span{width:70px;border-top:12px solid var(--iron)}.quiz-screen h2,.result-screen h2{margin:4px 0;font-size:clamp(1.8rem,5vw,3rem)}.no-timer{margin:3px 0 14px;font:800 .82rem system-ui}.quiz-count{font-weight:900;color:var(--red)}.quiz-question{width:min(100%,720px);min-height:72px;margin:7px 0 15px;padding:14px;border-top:4px solid var(--ink);border-bottom:4px solid var(--ink);font-size:clamp(1.05rem,3vw,1.38rem);font-weight:900;line-height:1.5}.quiz-choices{display:grid;grid-template-columns:1fr 1fr;gap:10px;width:min(100%,720px)}.quiz-choice{min-height:56px;padding:11px;border:3px solid var(--ink);background:#fff6dc;box-shadow:3px 3px 0 var(--shadow);cursor:pointer;font-weight:800}.quiz-choice.correct{border-color:#285f3e;background:#dceccd}.quiz-choice.wrong{border-color:#922f2f;background:#f3d1c7}.quiz-feedback{width:min(100%,720px);margin:14px 0;padding:13px;border:4px double var(--ink);background:#fff1bc;font:700 .88rem/1.6 system-ui}.final-garden{display:flex;align-items:center;gap:6px}.final-garden i,.final-garden b{display:grid;place-items:center;width:62px;height:62px;border:4px solid var(--ink);font:900 1.2rem system-ui;font-style:normal}.final-garden i{border-radius:50%;color:white;background:var(--red)}.final-garden i:last-child{background:var(--blue)}.final-garden b{background:var(--iron);color:white}.final-label{margin:12px 0 0;font:800 .75rem system-ui}.final-score{color:var(--red);font:900 clamp(3.1rem,12vw,6rem) system-ui}.result-facts{display:grid;grid-template-columns:repeat(3,1fr);width:min(100%,620px);margin:10px 0;border:4px double var(--ink)}.result-facts div{padding:10px;border-right:1px solid var(--ink)}.result-facts div:last-child{border:0}.result-facts dt{font:700 .72rem system-ui}.result-facts dd{margin:4px 0 0;font-size:1.25rem;font-weight:900}.result-message{max-width:650px;line-height:1.7}.result-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:12px}.ranking-panel{width:min(100%,700px);max-height:55vh;overflow:auto;margin-top:18px;padding:14px;color:#20231e;background:#fff9df;border:5px double var(--ink);text-align:left}.ranking-panel button,.ranking-panel [role="tab"]{color:#20231e!important;background:#ead59f!important}.ranking-panel button[aria-selected="true"],.ranking-panel .active{color:white!important;background:#7f2d28!important}.overlay{position:fixed;z-index:30;inset:0;display:grid;place-items:center;padding:14px;background:rgba(31,27,20,.72)}.overlay-paper{width:min(100%,540px);max-height:calc(100vh - 28px);overflow:auto;padding:27px;text-align:center;background:var(--sand-light);border:9px double var(--ink);box-shadow:12px 12px 0 var(--red)}.overlay-paper h2{margin:6px 0;font-size:1.8rem}.overlay-paper p{line-height:1.65}
@keyframes release{0%{opacity:0;transform:translate(-50%,-50%) scale(.45)}35%{opacity:1;transform:translate(-50%,-50%) scale(1.08)}75%{opacity:1;transform:translate(-50%,-50%) scale(1)}100%{opacity:0;transform:translate(-50%,-70%) scale(1.25)}}@keyframes sandWarn{50%{opacity:.56}}
@media(max-width:720px){.screen{padding:17px 13px 30px}.start-rules{grid-template-columns:1fr}.start-rules li{grid-template-columns:65px 1fr;text-align:left;border-right:0;border-bottom:1px solid var(--ink)}.piece-bench{grid-template-columns:1fr}.piece-actions{grid-column:1}.garden-world{padding:17px 8px 12px}.magnet-board{gap:4px}.board-cell{border-width:1px}.fixed-tile,.magnet-piece{width:92%}.pulse-row{grid-template-columns:1fr}.pulse-button{width:100%}.quiz-choices{grid-template-columns:1fr}.quiz-choice{width:100%;overflow-wrap:anywhere}.result-actions{display:grid;width:100%}.ranking-panel{scroll-margin-top:12px}.compact-hud{justify-content:center;gap:12px}.garden-header h2{font-size:1.28rem}}
@media(max-width:430px){.garden-header{align-items:flex-start}.utility-button{min-height:44px;padding:7px 9px;font-size:.75rem}.compact-hud{font-size:.7rem}.compact-hud b{font-size:.86rem}.lesson-ribbon{font-size:.78rem}.garden-world{border-width:6px}.board-cell:before{display:none}.terminal{font-size:.55rem}.iron-tile,.material-block{font-size:.5rem}.magnet-piece.selected:after{display:none}.piece-actions{display:grid}.piece-tray .magnet-piece{width:78px}.result-facts{font-size:.84rem}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}.garden-world.critical .danger-edge{animation:none}.magnet-piece{transition:none}}
.iron-tile{width:78%;height:78%;border:0;background:transparent;clip-path:none;display:grid;place-items:center;color:white;font:900 .55rem system-ui;text-shadow:0 1px #30383c}.iron-tile:before,.iron-tile:after{content:"";position:absolute;z-index:-1;background:#879196;border:3px solid #3f484c}.iron-straight:before{left:-13%;right:-13%;top:35%;height:30%}.iron-straight:after{display:none}.iron-corner:before{left:35%;top:-13%;width:30%;height:63%;border-bottom:0}.iron-corner:after{left:50%;right:-13%;top:35%;height:30%;border-left:0}.iron-tee:before{left:-13%;right:-13%;top:35%;height:30%}.iron-tee:after{left:35%;top:50%;width:30%;bottom:-13%;border-top:0}