:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#243b34;background:#f5f2e9;font-synthesis:none;--green:#1d4b3e;--line:#dcded2;--muted:#6c786c}*{box-sizing:border-box}body{margin:0}button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;color:inherit;cursor:pointer;border:1px solid var(--line);background:#fffdf6;border-radius:9px;padding:10px 14px;transition:background .15s,transform .15s,border-color .15s}button:hover{background:#e9eee3;border-color:#809b85}button:active{transform:translateY(1px)}button:disabled{opacity:.4;cursor:default}button:focus-visible,a:focus-visible,#stage:focus-visible{outline:3px solid #ab8139;outline-offset:3px}a{color:inherit}header{max-width:1450px;margin:auto;padding:24px 46px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{text-decoration:none;display:flex;align-items:center;gap:12px;font:700 31px Georgia,serif;letter-spacing:-1.4px}.brand small{display:block;font:9px/1.8 ui-monospace,monospace;letter-spacing:2.3px;margin-top:4px}.mark{background:var(--green);color:#efd7a6;border-radius:12px;display:grid;place-items:center;width:46px;height:50px;font-size:37px}.head-actions{display:flex;align-items:center;gap:12px;font-size:12px}#progress{margin-right:16px;color:var(--muted)}#help{background:var(--green);color:white;border-color:var(--green)}#help span{display:inline-grid;place-items:center;border:1px solid #789283;border-radius:50%;width:16px;height:16px;margin-left:8px}main{max-width:1320px;margin:auto;padding:0 38px}.intro{padding:40px 0 31px;display:flex;justify-content:space-between;align-items:center}.eyebrow{font:10px/1.6 ui-monospace,monospace;letter-spacing:2px;color:var(--green);margin:0 0 10px}.intro h1{font:normal clamp(32px,3.4vw,49px)/1.15 Georgia,serif;letter-spacing:-1.6px;margin:0 0 12px}.intro p:last-child{color:var(--muted);font-size:14px;margin:0}.edition{font:10px/1.8 ui-monospace,monospace;letter-spacing:2px;text-align:right;color:#84907e;border-left:1px solid var(--line);padding-left:27px}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:22px}.exhibit{position:relative;min-width:0;background:#ebece2;border:1px solid #dce1d4;border-radius:19px;overflow:hidden;box-shadow:0 18px 50px #2b453708}.object-heading{display:flex;align-items:center;gap:13px;padding:24px 26px 0;position:relative;z-index:2}.number{font:italic 35px Georgia,serif;color:#9aa78f;padding-right:13px;border-right:1px solid #d0d7c7}.object-heading h2{font:normal 23px Georgia,serif;margin:0 0 5px}.object-heading p{font-size:11px;color:var(--muted);margin:0}.difficulty{margin-left:auto;font:9px ui-monospace,monospace;letter-spacing:1px;white-space:nowrap;background:#f6f7ed;padding:7px 10px;border-radius:20px}#stage{height:430px;position:relative;background:radial-gradient(ellipse at 50% 40%,#faf9ee 0,#eeeee4 45%,#e5e9dc 100%);touch-action:none;outline-offset:-4px}#stage canvas{display:block;width:100%;height:100%;position:relative;z-index:1;cursor:grab}#stage canvas:active{cursor:grabbing}.floor-shadow{position:absolute;left:27%;top:74%;width:46%;height:14%;background:#35432f;filter:blur(27px);border-radius:50%;opacity:.12}#loading{position:absolute;inset:0;display:grid;place-items:center;z-index:4;background:#f0f0e6}#loading[hidden]{display:none}#axis-labels{position:absolute;inset:0;pointer-events:none;z-index:2}#axis-labels b{position:absolute;font:600 12px ui-monospace,monospace;background:#fffff4b8;padding:3px 5px;border-radius:4px}#label-x,.x{color:#9e513d}#label-y,.y{color:#3a7853}#label-z,.z{color:#467f9e}.stage-tools{display:flex;align-items:center;justify-content:space-between;padding:10px 23px 18px;gap:8px;color:var(--muted);font-size:10px}.stage-tools div{display:flex;gap:6px}.stage-tools button{font-size:11px;background:#fafbf18c;border:1px solid #d3dac9;padding:7px 10px}#ghost[aria-pressed=true]{background:var(--green);color:#fff}.cabinet{padding:16px 22px 19px;background:#f7f7ed;display:flex;gap:8px;border-top:1px solid #dde2d3}.cabinet button{flex:1;padding:11px 0;border-radius:7px;font:12px ui-monospace,monospace;position:relative;background:#eef0e5;color:#6e7f6a}.cabinet button.current{background:var(--green);color:#f0ddaf;border-color:var(--green)}.cabinet button.complete:after{content:'•';position:absolute;top:0;right:5px;color:#ac7931}.cabinet button.current:after{color:#efd7a6}.workbench{border:1px solid var(--line);background:#fffdf6;border-radius:19px;padding:23px 23px 16px;box-shadow:0 18px 50px #2b453705}.bench-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:19px}.bench-top .eyebrow{margin:0;font-size:9px;letter-spacing:1.8px}.counter{display:flex;gap:5px;align-items:baseline}.counter strong{font:normal 25px Georgia,serif}.counter span{font-size:10px;color:var(--muted)}h3{font-size:13px;font-weight:600;margin:0 0 6px}.muted{font-size:11px;color:var(--muted);line-height:1.6;margin:0 0 12px}.pieces{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin:15px 0 23px}.pieces button{padding:7px 5px;font-size:10px;background:#f8f8ef;display:flex;align-items:center;gap:6px;justify-content:center;border-radius:7px}.chip{display:inline-block;width:19px;height:24px;border-radius:4px;background-size:cover;border:1px solid #0001;box-shadow:inset 0 1px 2px #fff5}.pieces button.selected{border:2px solid #497260;padding:6px 4px;background:#edf3e8}.move-heading{display:flex;gap:5px;align-items:baseline;justify-content:space-between}#selected-name{font:9px ui-monospace,monospace;color:#728269}.directions{display:grid;gap:7px;margin-top:13px}.axis-row{display:grid;grid-template-columns:18px 1fr 1fr;gap:7px;align-items:center}.axis-row>span{font:600 10px ui-monospace,monospace}.axis-row button{display:flex;align-items:center;justify-content:space-between;font:12px ui-monospace,monospace;padding:11px 10px;background:#f6f7ef}kbd{font:9px ui-monospace,monospace;color:#8c9884;background:#e6eadf;border-radius:3px;padding:2px 4px}.axis-row button.hinted{background:#e1edcb;border:2px solid #7e9e4c;padding:10px 9px;box-shadow:0 0 0 2px #e2edcc}#message{font-size:11px;line-height:1.6;background:#f0f3e8;border-radius:8px;padding:11px 12px;margin:17px 0 12px;min-height:57px;color:#526347}#message.blocked{background:#fcf0e5;color:#8a543c}.actions{display:flex;gap:6px}.actions button{font-size:11px;padding:9px 8px;flex:1}.actions #hint{background:#e6eddb;border-color:#d1debd}.bench-note{display:flex;gap:10px;margin-top:18px;padding-top:14px;border-top:1px solid #e4e5db;align-items:center}.bench-note>span{font-size:29px;color:#9eac89}.bench-note p{font:italic 12px/1.5 Georgia,serif;color:#809074;margin:0}footer{display:flex;justify-content:space-between;gap:10px;padding:20px 2px 26px;font-size:10px;color:#7a8676}footer a{text-underline-offset:3px}dialog{color:#243b34;border:1px solid #d8decd;background:#fffdf5;border-radius:19px;padding:36px;max-width:540px;width:calc(100% - 30px);box-shadow:0 30px 100px #162e3340}dialog::backdrop{background:#1a302a80;backdrop-filter:blur(6px)}dialog h2{font:normal 30px/1.1 Georgia,serif;letter-spacing:-.7px}dialog p,dialog li{font-size:13px;line-height:1.7}dialog ol{padding-left:18px}dialog li{padding:6px 0}.close[aria-label]{position:absolute;top:12px;right:12px;font-size:23px;border:0;background:transparent;padding:2px 9px}.primary{background:var(--green);border-color:var(--green);color:#fff}.primary:hover{background:#2c5d46}.win-seal{font-size:70px;color:#a17e37;line-height:1.2}#win-dialog{text-align:center;padding:38px}#win-dialog h2{margin:12px 0}#win-dialog #inspect{border:0;background:transparent;text-decoration:underline;font-size:11px;color:#728268}.win-actions{display:flex;gap:10px;justify-content:center;margin:25px 0 10px}
@media(min-width:1450px){#stage{height:490px}}@media(max-width:900px){header{padding:20px 25px}main{padding:0 22px}.workspace{grid-template-columns:minmax(0,1fr) 280px;gap:14px}.workbench{padding:21px 18px 16px}.intro{padding-top:30px}.edition{display:none}.object-heading{padding:20px 17px 0}.difficulty{display:none}#stage{height:430px}.stage-tools{padding:10px 14px 17px}.stage-tools>span{max-width:120px;line-height:1.5}.cabinet{padding:14px 12px;gap:5px}.head-actions{gap:7px}#progress{margin-right:0}.brand{font-size:27px}}@media(max-width:650px){header{padding:16px 18px}.brand{font-size:26px}.mark{width:37px;height:42px;font-size:30px}.brand small{font-size:7px;letter-spacing:1.8px}.head-actions button{font-size:10px;padding:8px}#help span,#sound,#progress{display:none}main{padding:0 14px}.intro{padding:24px 3px 21px}.intro .eyebrow{font-size:8px;letter-spacing:1.3px}.intro h1{font-size:34px;letter-spacing:-1px;margin-bottom:9px}.intro p:last-child{font-size:12px}.workspace{display:flex;flex-direction:column;gap:13px}.object-heading{padding:16px 17px 0}.object-heading h2{font-size:21px}.object-heading p{font-size:10px;line-height:1.5}.number{font-size:29px}#stage{height:340px}.stage-tools{padding:3px 16px 13px}.stage-tools>span{max-width:none;font-size:9px}.stage-tools button{font-size:10px}.cabinet{padding:13px 15px;gap:6px}.cabinet button{padding:10px 0}.workbench{padding:18px}.bench-top{margin-bottom:15px}.pieces{grid-template-columns:repeat(3,1fr);margin:11px 0 18px}.pieces button{padding:8px}.pieces button.selected{padding:7px}.muted br{display:none}.axis-row{grid-template-columns:20px 1fr 1fr}.axis-row button{padding:12px 15px}.actions button{padding:12px}.bench-note{display:none}#message{min-height:40px;margin:12px 0}footer{display:block;text-align:center;font-size:9px;line-height:1.6;padding-bottom:16px}dialog{padding:29px 24px}dialog h2{font-size:27px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
@media(max-width:650px) and (min-height:650px){.exhibit{position:sticky;top:8px;z-index:3;box-shadow:0 8px 28px #243b3412}#stage{height:250px}.object-heading p{max-width:245px}.stage-tools{padding-bottom:9px}.cabinet{padding-top:10px;padding-bottom:10px}.cabinet button{padding:8px 0}}