:root{color-scheme:light;--ink:#22483e;--muted:#78857a;--paper:#f5f0e6;--orange:#e9894b;--line:#dcded2;--mint:#e7eee3}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,"Segoe UI",Arial,sans-serif;background-image:radial-gradient(#c2cbb94f .65px,transparent .65px);background-size:12px 12px}.app{max-width:1120px;margin:auto;padding:28px 48px 16px}header{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:24px}.brand{display:flex;align-items:center;gap:12px}.brand-icon{font-size:36px;background:var(--ink);color:var(--paper);border-radius:11px;width:51px;height:51px;text-align:center;line-height:45px;transform:rotate(-5deg)}.brand strong{font-size:26px;letter-spacing:-1.3px}.brand-dot{color:var(--orange)}.brand small{display:block;font-size:10px;letter-spacing:.4px;color:var(--muted);margin-top:2px}.prototype{font-size:10px;letter-spacing:1.3px;color:var(--muted);border:1px solid var(--line);padding:9px 12px;border-radius:20px}main{display:grid;grid-template-columns:300px minmax(0,540px);gap:74px;justify-content:center;padding:28px 0}.brief{padding-top:36px}.eyebrow{font-size:10px;letter-spacing:1.6px;font-weight:750;color:var(--muted);margin:0}h1{font-size:57px;line-height:1.02;letter-spacing:-3px;margin:20px 0}.intro{font-size:15px;line-height:1.7;color:#6c7a6e}.controls-guide{display:grid;gap:18px;margin-top:34px}.controls-guide>div{display:flex;gap:14px;align-items:flex-start}.guide-icon{display:grid;place-items:center;flex-shrink:0;width:35px;height:35px;background:#e5e9dd;border:1px solid #d5dccd;border-radius:10px;font-size:24px}.controls-guide p{margin:0}.controls-guide b{font-size:13px}.controls-guide small{display:block;font-size:12px;line-height:1.55;color:var(--muted);margin-top:5px;max-width:210px}.route-note{display:flex;gap:12px;margin-top:35px;align-items:center;padding-top:18px;border-top:1px solid var(--line);font-size:11px;line-height:1.6}.route-note>span{color:var(--orange);font-size:20px}.route-note p{margin:0;color:var(--muted)}.route-note b{color:var(--ink)}.game{width:100%;padding:20px 25px 14px;border:1px solid #d8dece;border-radius:24px;background:#fffdf6;box-shadow:0 12px 40px #243b3210}.mode-switch{display:flex;background:#edf0e6;border:1px solid #dce2d5;padding:4px;border-radius:13px;gap:4px}.mode-switch button{flex:1;border:0;min-height:39px;background:none;color:#708172;font-weight:700;font-size:12px;border-radius:9px}.mode-switch button[aria-pressed=true]{color:#fffdf6;background:var(--ink);box-shadow:0 2px 4px #24483e25}.mode-note{font-size:11px;text-align:center;margin:9px 0 20px;min-height:14px;color:var(--muted)}button{font-family:inherit;cursor:pointer;touch-action:manipulation}button:focus-visible{outline:3px solid #da8643;outline-offset:3px}button:disabled{cursor:default;opacity:.4}.route-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}h2{font-size:24px;letter-spacing:-.7px;margin:5px 0 0;font-weight:750}.progress{font-size:23px;font-weight:750;letter-spacing:-1px}.progress small{display:block;font-weight:400;letter-spacing:.4px;font-size:10px;color:var(--muted);text-align:right;margin-top:2px}.level-nav{display:flex;gap:6px;margin:15px 0 18px}.level-nav button{flex:1;border:0;background:#eef0e7;border-radius:6px;min-height:29px;color:#859180;font-size:11px;font-weight:700;position:relative}.level-nav button.active{background:#efc195;color:#694a2d}.level-nav button.done:after{content:'·';position:absolute;right:6px;color:#4e795b}.target-row{display:flex;justify-content:space-between;align-items:center;gap:6px;font-size:9px;font-weight:750;letter-spacing:1px;color:var(--muted);padding:0 8px}.target-row span:first-child{color:var(--ink);background:#edf0e5;padding:5px 8px;border-radius:5px}.stage{position:relative;width:100%;user-select:none;-webkit-user-select:none;touch-action:none;overflow:visible;margin-top:1px}.stage canvas{width:100%;height:100%;display:block;pointer-events:none}.piece{position:absolute;border-radius:11px;border:2px solid #3b443b2b;box-shadow:0 5px 0 var(--shadow),0 7px 8px #243b321c;background:var(--box);color:#fffdf5;padding:0;overflow:hidden;touch-action:none;user-select:none;transition:filter .12s,box-shadow .12s;outline-offset:1px}.piece:before{content:'';position:absolute;left:42%;width:17%;height:100%;top:0;background:#fff4d429;border-left:1px solid #ffffff1f;border-right:1px solid #ffffff1f}.piece:after{content:'';position:absolute;top:5px;left:7px;right:7px;border-top:1px solid #ffffff4d;pointer-events:none}.piece .num{position:absolute;top:7px;left:9px;font-size:clamp(15px,2.2vw,23px);font-weight:800;text-shadow:0 1px #4a392733}.piece .door{position:absolute;left:9px;bottom:6px;font-size:10px;opacity:.9;font-weight:750}.piece .ready{position:absolute;right:6px;bottom:5px;font-size:19px;line-height:22px;font-weight:800;color:#fbfff2}.piece.ready{box-shadow:0 5px 0 var(--shadow),0 0 0 2px #8dae80,0 0 0 5px #dce8d254,0 7px 8px #243b321c}.piece.selected{outline:2px solid #22483e;outline-offset:3px}.piece.dragging{z-index:10;filter:brightness(1.06);box-shadow:0 5px 0 var(--shadow),0 9px 16px #243b3240;transition:none}.piece.shake{animation:shake .22s}.stage.busy .piece{cursor:wait}.status{min-height:43px;display:flex;align-items:center;justify-content:center;text-align:center;font-size:12px;font-weight:600;line-height:1.5;color:#5f735e;padding:5px 8px}.status.error{color:#ad5e32}.toolbar{border-top:1px solid #e4e7dd;padding-top:12px;display:flex;gap:8px}.toolbar button{border:1px solid #dce2d5;background:#f4f6ed;color:var(--ink);min-height:39px;padding:6px 12px;border-radius:10px;font-size:11px;font-weight:650}.toolbar button span{font-size:17px;margin-right:3px}.toolbar button:last-child{margin-left:auto;background:transparent;color:var(--muted);padding:6px 9px}.keyboard-note{font-size:9px;text-align:center;color:#98a18f;margin:12px 0 0}.keyboard-note span{padding:0 3px}.win{position:absolute;inset:30px 0 20px;z-index:20;border-radius:20px;background:#f9fbf2f7;backdrop-filter:blur(5px);display:flex;flex-direction:column;align-items:center;justify-content:center;box-shadow:inset 0 0 0 1px #d6dfcf}.win[hidden]{display:none}.win-icon{display:grid;place-items:center;border:1px solid #b9cfac;width:58px;height:58px;border-radius:50%;background:#e3eed8;font-size:32px;margin-bottom:19px}.win h3{font-size:31px;margin:10px 0;letter-spacing:-1px}.win p{font-size:12px;color:var(--muted);margin:0 0 23px}.win #nextButton{background:var(--ink);color:#f6f7ed;border:0;padding:14px 22px;min-width:215px;border-radius:11px;font-size:13px;font-weight:750}.win #nextButton span{margin-left:18px}.text-button{font-size:11px;color:var(--ink);padding:13px;border:0;background:none}.motion-piece{pointer-events:none;z-index:15;will-change:transform,opacity}footer{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:15px 0 0;font-size:9px;letter-spacing:1px;color:#929c88}footer span:first-child{font-weight:800}@keyframes shake{25%{translate:-4px}75%{translate:4px}}@media(min-width:900px){.stage{max-width:430px;margin-left:auto;margin-right:auto}}@media(max-width:900px){.app{padding:18px 25px}main{gap:30px;grid-template-columns:230px minmax(0,500px)}h1{font-size:48px}.brief{padding-top:28px}.game{padding:18px 18px 12px}}@media(max-width:690px){.app{max-width:510px;padding:16px 14px 12px}header{padding-bottom:15px}.brand strong{font-size:22px}.brand-icon{height:39px;width:40px;font-size:29px;line-height:35px}.brand small{font-size:8px}.prototype{font-size:8px;padding:7px 9px;letter-spacing:.6px}main{display:block;padding:15px 0}.brief{display:none}.game{padding:15px 15px 12px;border-radius:20px}.mode-note{margin:7px 0 13px;font-size:10px}.route-heading h2{font-size:21px}.level-nav{margin:12px 0;gap:5px}.level-nav button{min-height:28px}.progress{font-size:20px}.piece .num{font-size:20px}.piece .door{font-size:9px;left:7px;bottom:5px}.piece .ready{font-size:18px;right:5px;bottom:4px}.status{font-size:11px;min-height:41px}.target-row{font-size:8px;letter-spacing:.7px}.toolbar{padding-top:10px;gap:6px}.toolbar button{padding:6px 10px}.keyboard-note{font-size:8px}.win h3{font-size:27px}footer{font-size:8px;padding-top:12px}}@media(prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important}}

.piece .num{line-height:1;top:7px;left:8px;font-size:21px}.piece .door{line-height:1;font-size:8px;bottom:6px;left:8px}.piece .ready{font-size:17px;line-height:18px;bottom:5px;right:5px}
@media(max-width:690px){.piece .num{font-size:17px;top:5px;left:6px}.piece .door{font-size:7px;bottom:4px;left:6px}.piece .ready{font-size:15px;line-height:16px;right:4px;bottom:4px}}

.piece .door{font-size:11px;font-weight:800}@media(max-width:690px){.piece .door{font-size:10px}}

@media(max-width:690px){.piece.short .num{font-size:15px;top:3px}.piece.short .door{font-size:9px;bottom:3px}}

.challenge-row{display:flex;align-items:center;justify-content:space-between;gap:8px;margin:-3px 0 14px;padding:9px 0;border-top:1px dashed #dce2d5;border-bottom:1px dashed #dce2d5}.challenge-row>span{font-size:8px;letter-spacing:1px;font-weight:750;color:#8c7962}.challenge-row small{display:block;font-weight:400;letter-spacing:0;margin-top:3px;color:#89907f}.challenge-row nav{display:flex;gap:6px}.challenge-row button{border:1px solid #ddc9af;border-radius:7px;min-height:31px;background:#fbf3e6;color:#8a6238;padding:4px 10px;font-size:10px;font-weight:700}.challenge-row button.active{background:#87613f;color:#fff9ed}.mode-switch button:disabled{opacity:.4;cursor:default}.text-button[hidden]{display:none}
@media(max-width:690px){.challenge-row{margin:0 0 10px;padding:7px 0}.challenge-row button{padding:4px 8px;font-size:9px}.challenge-row>span{letter-spacing:.5px;font-size:7px}}

/* Ordered dispatch: number, letter and shape cues also work without color. */
.queue{display:flex;align-items:center;justify-content:space-between;gap:12px;border:2px solid #47634e;border-radius:13px;background:#eef2e4;padding:12px 15px;margin:0 6px;position:relative}.queue:before{content:'';position:absolute;top:-10px;left:calc(50% - 7px);width:14px;height:14px;border-left:2px solid #47634e;border-top:2px solid #47634e;background:inherit;transform:rotate(45deg)}.queue strong{display:block;font-size:21px;letter-spacing:-.4px}.queueStatus{font-size:12px}.queue #queueStatus{display:block;font-weight:650;font-size:13px;margin-top:3px}.queue.open{background:#e5efd8}.queue-after{text-align:right;white-space:nowrap}.queue-after small{display:block;font-size:8px;letter-spacing:1px;color:#6c7a60;margin-bottom:5px}.queue-after span{font-size:13px;font-weight:750}.queue[hidden]{display:none}.parcel-hint{min-height:18px;font-size:11px;text-align:center;font-weight:650;margin:10px 0 0;color:#42614b}.piece.route-open{box-shadow:0 5px 0 var(--shadow),0 0 0 2px #4d7256,0 7px 8px #243b321c}.piece.current{outline:3px solid #233e32;outline-offset:2px}.piece.current .num{background:#fffdf4;color:#243f31;border:1px solid #324d3c;border-radius:4px;min-width:23px;text-align:center;padding:1px 3px;top:5px;left:5px}.piece .route-check{position:absolute;right:4px;bottom:3px;color:#fff;background:#244f36;border:1px solid #fffbd2;border-radius:50%;width:17px;height:17px;line-height:15px;font-size:13px;font-weight:900}.piece .door{font-size:12px;opacity:1}.piece.attention{animation:attention .65s ease-out}.stage #routePath{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible;z-index:12}.route-line{fill:none;stroke:#294f3a;stroke-width:3;stroke-dasharray:5 5;stroke-linejoin:round;opacity:.7;paint-order:stroke;filter:drop-shadow(0 0 2px #fff)}.mode-switch #freeMode{font-size:11px}.status{min-height:38px}.piece .num,.piece .door,.piece .route-check{pointer-events:none}@keyframes attention{0%{outline-width:6px;filter:brightness(1.15)}100%{outline-width:3px}}
@media(max-width:690px){.queue{padding:9px 10px;gap:7px;margin:0}.queue strong{font-size:18px}.queue #queueStatus{font-size:12px}.queue-after span{font-size:11px}.parcel-hint{font-size:10px;min-height:15px;margin-top:9px}.piece.current .num{font-size:16px;min-width:20px;top:2px;left:3px}.piece .door{font-size:10px;left:5px;bottom:3px}.piece .route-check{width:14px;height:14px;line-height:12px;font-size:11px;right:2px;bottom:2px}.piece.short.current .num{font-size:14px;min-width:18px;top:1px;padding:0 2px}.piece.short .door{font-size:9px;bottom:2px}}

.level-picker{display:flex;align-items:center;gap:10px;color:#667861;font-size:9px;font-weight:750;letter-spacing:.6px;margin-top:12px}.level-picker select{flex:1;min-width:0;min-height:42px;border:1px solid #d4ddcd;background:#f4f6ec;color:#24483e;border-radius:9px;padding:8px 10px;font:600 12px "Segoe UI",Arial,sans-serif}.level-nav{margin:8px 0 12px}.level-nav button{min-height:42px;font-size:12px}.queue:before{left:calc(var(--gate-pointer,50%) - 7px)}.queue #queueStatus{letter-spacing:.1px}.toolbar button,.challenge-row button{min-height:42px}.app{padding-bottom:max(16px,env(safe-area-inset-bottom));padding-left:max(14px,env(safe-area-inset-left));padding-right:max(14px,env(safe-area-inset-right))}body{min-height:100dvh}.piece{-webkit-touch-callout:none}.stage{overscroll-behavior:contain}.level-picker select:focus-visible{outline:3px solid #da8643;outline-offset:2px}
@media(max-width:690px){.app{padding-top:max(12px,env(safe-area-inset-top))}.level-picker{font-size:8px;gap:7px}.level-picker select{min-height:42px;font-size:12px}.mode-note{line-height:1.5}.level-nav button{min-height:42px}.challenge-row button{min-height:42px}.toolbar button{min-height:42px}.queue strong{font-size:17px}}

.queue-after[hidden]{display:none}.queue.finished:before{display:none}

/* 360px including a classic scrollbar: real, disjoint parcel bounds exceed 44px. */
.mode-switch button,.toolbar button,.challenge-row button,.level-nav button,.level-picker select{min-height:44px}.piece{overflow:hidden}.piece:after{top:5px;left:7px;right:7px;bottom:auto;border-top:1px solid #ffffff4d;pointer-events:none}.piece{box-shadow:0 2px 0 var(--shadow),0 4px 6px #243b321c}.piece.route-open{box-shadow:0 2px 0 var(--shadow),0 0 0 2px #4d7256}.stage #routePath{z-index:11}
@media(max-width:690px){.app{padding-left:max(8px,env(safe-area-inset-left));padding-right:max(8px,env(safe-area-inset-right))}.game{padding-left:11px;padding-right:11px}}