:root,[data-theme=light]{--color-bg: #FDFBF7;--color-text: #222222;--color-text-mild: #666666;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--scale-stroke: #222222;--scale-base-fill: #e8e0d0;--scale-pan-fill: #d4c5a9;--scale-pan-shadow: #c8b89a;--scale-chain: #444444;--color-shelf-wood: #DEB887;--color-shelf-edge: #8B6914;--color-bubble-bg: #ffffff;--accent-yellow: #ffcc00}[data-theme=dark],:root[data-theme=dark],html[data-theme=dark]{--color-bg: #141417;--color-text: #fdfbf7;--color-text-mild: #c4beb5;--scale-stroke: #fdfbf7;--scale-base-fill: #262633;--scale-pan-fill: #353547;--scale-pan-shadow: #20202c;--scale-chain: #9595a8;--color-shelf-wood: #2c241c;--color-shelf-edge: #181410;--color-bubble-bg: #1e1e25;--accent-yellow: #ffd000}html{background-color:var(--color-bg);color:var(--color-text)}html[data-theme=dark],html[data-theme=dark] body{background-color:#141417;color:#fdfbf7}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-text);margin:0;overflow:hidden;display:flex;flex-direction:column;height:100vh;height:100dvh;transition:background-color .4s ease,color .4s ease,filter .5s ease;user-select:none;-webkit-user-select:none;touch-action:manipulation;position:relative;padding-bottom:env(safe-area-inset-bottom,0px);animation:fadeIn .25s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.isht-home-link{position:absolute;top:1rem;left:1rem;border-bottom:2px dotted transparent;transition:border-bottom-color .2s;z-index:100}.isht-home-link:hover{border-bottom-color:var(--color-text)}.isht-home-link img{height:48px;width:auto;display:block}.theme-toggle-switch{position:fixed;top:1rem;right:1.25rem;width:68px;height:36px;padding:0;border:none;background:transparent;cursor:pointer;z-index:1000;outline:none;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}.toggle-track{position:relative;display:block;width:100%;height:100%;border-radius:999px;border:2px solid var(--scale-stroke, #222222);background:#f1ebd8;box-shadow:3px 3px 0 0 var(--scale-stroke, #222222);transition:background-color .4s ease,border-color .4s ease,box-shadow .4s ease,transform .15s ease;overflow:hidden}[data-theme=dark] .toggle-track{background:#1e1e28;border-color:#fdfbf7;box-shadow:3px 3px #fdfbf7}.theme-toggle-switch:hover .toggle-track{transform:translateY(-2px);box-shadow:4px 4px 0 0 var(--scale-stroke, #222222)}[data-theme=dark] .theme-toggle-switch:hover .toggle-track{box-shadow:4px 4px #fdfbf7}.theme-toggle-switch:active .toggle-track{transform:translateY(1px);box-shadow:2px 2px 0 0 var(--scale-stroke, #222222)}.theme-toggle-switch:focus-visible .toggle-track{outline:2px dashed var(--accent-yellow, #ffcc00);outline-offset:4px}.track-deco{position:absolute;top:0;bottom:0;display:flex;align-items:center;pointer-events:none;transition:opacity .4s ease,transform .4s ease}.track-sun-deco{right:8px;gap:3px;opacity:.6}.cloud-dot{background:#deb887;border-radius:50%;display:inline-block}.dot-1{width:8px;height:8px}.dot-2{width:5px;height:5px}.track-moon-deco{left:8px;gap:3px;color:#ffd000;opacity:0;font-size:9px;transform:translate(-4px)}[data-theme=dark] .track-sun-deco{opacity:0;transform:translate(4px)}[data-theme=dark] .track-moon-deco{opacity:.85;transform:translate(0)}.toggle-thumb{position:absolute;top:2px;left:3px;width:28px;height:28px;border-radius:50%;background-color:#fff;border:1.5px solid var(--scale-stroke, #222222);box-shadow:0 2px 4px #00000026;display:flex;align-items:center;justify-content:center;transition:transform .45s cubic-bezier(.34,1.56,.64,1),background-color .4s ease,border-color .4s ease}[data-theme=dark] .toggle-thumb{transform:translate(31px);background-color:#14141c;border-color:#fdfbf7}.thumb-icon{position:absolute;display:flex;align-items:center;justify-content:center;width:20px;height:20px;transition:transform .45s cubic-bezier(.34,1.56,.64,1),opacity .3s ease}.thumb-icon svg{width:100%;height:100%;display:block}.sun-icon{opacity:1;transform:rotate(0) scale(1)}.moon-icon{opacity:0;transform:rotate(-120deg) scale(.4)}[data-theme=dark] .sun-icon{opacity:0;transform:rotate(120deg) scale(.4)}[data-theme=dark] .moon-icon{opacity:1;transform:rotate(0) scale(1)}.theme-inverted-ripple{position:fixed;top:0;right:0;bottom:0;left:0;width:100vw;height:100vh;pointer-events:none;z-index:999999;background-color:#fff;mix-blend-mode:difference;will-change:clip-path,opacity}.streak-display{position:absolute;top:1.5rem;right:90px;font-size:1rem;font-weight:500;z-index:100;transition:opacity .5s ease,color .4s ease}.streak-display .best-streak{color:var(--color-text-mild);font-size:.9em}.hidden{opacity:0;pointer-events:none}.fade-in{animation:fadeIn 1s forwards}@keyframes fadeIn{to{opacity:1;pointer-events:auto}}.intro-text{position:absolute;top:25%;left:50%;transform:translate(-50%,-50%);font-size:1.5rem;color:var(--color-text-mild);transition:opacity 1s,color .4s ease}.container{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;position:relative;z-index:10;padding-bottom:20px}.target-container{text-align:center;margin-bottom:1rem;min-height:80px;z-index:50}#target-label{font-size:2.2rem;font-weight:600;letter-spacing:-.5px;transition:opacity .5s,color .4s ease}#target-subtitle{font-size:1.1rem;color:var(--color-text-mild);margin-top:.2rem;transition:opacity .5s,color .4s ease}.scale-container{position:relative;width:100%;max-width:800px;height:420px;margin:0 auto;display:flex;justify-content:center;align-items:center}#scale-svg{width:100%;height:100%;overflow:visible}.scale-base-platform{fill:var(--scale-base-fill);stroke:var(--scale-stroke);transition:fill .4s ease,stroke .4s ease}.scale-post{stroke:var(--scale-stroke);transition:stroke .4s ease}.scale-knob{fill:var(--scale-base-fill);stroke:var(--scale-stroke);transition:fill .4s ease,stroke .4s ease}.scale-beam-line{stroke:var(--scale-stroke);transition:stroke .4s ease}.scale-chain-line{stroke:var(--scale-chain);transition:stroke .4s ease}.scale-pan-dish{fill:var(--scale-pan-fill);stroke:var(--scale-stroke);transition:fill .4s ease,stroke .4s ease}.scale-pan-shadow{fill:var(--scale-pan-shadow);stroke:var(--scale-stroke);transition:fill .4s ease,stroke .4s ease}.scale-pivot-pin{fill:var(--scale-base-fill);stroke:var(--scale-stroke);transition:fill .4s ease,stroke .4s ease}.scale-plate-overlay{position:absolute;width:200px;height:140px;transform:translate(-50%,-60%);z-index:20;pointer-events:auto;transition:left .4s cubic-bezier(.25,.46,.45,.94),top .4s cubic-bezier(.25,.46,.45,.94)}.scale-plate-overlay.left{left:12.5%;top:64%}.scale-plate-overlay.right{left:87.5%;top:64%}.item{width:var(--item-sz, 70px);height:calc(var(--item-sz, 70px) + 18px);display:flex;flex-direction:column;align-items:center;cursor:grab;touch-action:none;flex-shrink:0;user-select:none;-webkit-user-select:none}.item:active,.item.dragging{cursor:grabbing}.item.rare{filter:drop-shadow(0 0 6px rgba(255,215,0,.9))}.item-fallback{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:2.5rem}.item-name{font-size:.75rem;text-align:center;white-space:nowrap;margin-top:4px;font-weight:500;color:var(--color-text);pointer-events:none;transition:color .4s ease}.item-svg-wrapper{position:relative;width:100%;flex:1;min-height:0;background:transparent}.item-svg-wrapper img{width:100%;height:100%;object-fit:contain;display:block;-webkit-user-select:none;user-select:none;-webkit-user-drag:none;background:transparent}.item-eye-svg{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;overflow:visible}.eye{fill:#fff;stroke:#222;stroke-width:1.5}.pupil{fill:#111;transition:transform .1s ease-out}.eyebrow{stroke:#222;stroke-width:2;stroke-linecap:round;fill:none;opacity:0;transition:opacity .2s}.eye-group.angry .eyebrow{opacity:1}.shelf-container{height:130px;width:100%;background:var(--color-shelf-wood);background-image:repeating-linear-gradient(0deg,transparent,transparent 10px,rgba(0,0,0,.04) 10px,rgba(0,0,0,.04) 20px);border-top:8px solid var(--color-shelf-edge);box-shadow:0 -4px 12px #0003;position:relative;z-index:25;transition:opacity 1s,background-color .4s ease,border-color .4s ease;border-top-left-radius:12px;border-top-right-radius:12px;touch-action:pan-x}.item-shelf{display:flex;align-items:flex-end;justify-content:flex-start;gap:1.5rem;height:100%;padding:10px 24px 14px;overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;touch-action:pan-x;scroll-behavior:smooth;overscroll-behavior-x:contain;-ms-overflow-style:none;scrollbar-width:none}.item-shelf::-webkit-scrollbar{display:none}.item-shelf .item{position:relative!important;left:auto!important;top:auto!important;transform:none!important;transition:transform .2s cubic-bezier(.2,.8,.2,1);flex-shrink:0;touch-action:pan-x}.item-shelf .item:hover{transform:translateY(-8px)!important}.item.dragging{touch-action:none;cursor:grabbing!important}.lock-in-btn{position:absolute;bottom:20px;padding:12px 32px;font-size:1.2rem;font-weight:700;background:var(--accent-yellow);color:#141417;border:2px solid var(--scale-stroke);border-radius:25px;cursor:pointer;transition:transform .1s,opacity .5s,background-color .4s ease,border-color .4s ease;z-index:100;font-family:inherit;box-shadow:0 4px 12px #00000026;touch-action:manipulation;-webkit-tap-highlight-color:transparent}.lock-in-btn:hover{background:#e6b800;transform:translateY(-2px)}.lock-in-btn:active{transform:scale(.95)}.lock-in-btn:disabled{opacity:.5;pointer-events:none}.result-message{position:absolute;bottom:80px;font-size:1.2rem;font-weight:500;color:var(--color-text-mild);transition:opacity .3s,color .4s ease}.bubble-container{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:50;overflow:hidden}.speech-bubble{position:absolute;background:var(--color-bubble-bg);color:var(--color-text);border:2px solid var(--scale-stroke);border-radius:12px;padding:8px 12px;font-size:.9rem;font-weight:500;max-width:200px;text-align:center;transform:translate(-50%,-100%);margin-top:-15px;box-shadow:2px 2px #0003;animation:popIn .3s cubic-bezier(.175,.885,.32,1.275);pointer-events:none;cursor:default;transition:background-color .4s ease,color .4s ease,border-color .4s ease}.speech-bubble:after{content:"";position:absolute;bottom:-8px;left:50%;margin-left:-8px;border-width:8px 8px 0;border-style:solid;border-color:var(--scale-stroke) transparent transparent transparent}.speech-bubble:before{content:"";position:absolute;bottom:-5px;left:50%;margin-left:-6px;border-width:6px 6px 0;border-style:solid;border-color:var(--color-bubble-bg) transparent transparent transparent;z-index:1}@keyframes popIn{0%{opacity:0;transform:translate(-50%,-80%) scale(.8)}to{opacity:1;transform:translate(-50%,-100%) scale(1)}}.eye-shape{transition:d .2s,ry .2s,rx .2s}.eye-group.happy .eye-shape{rx:5;ry:2}.eye-group.panicked .eye-shape{rx:4;ry:8}.eye-group.falling .eye-shape,.eye-group.shut .eye-shape{rx:5;ry:1}.particle{position:absolute;width:5px;height:5px;background:var(--color-text-mild);border-radius:50%;opacity:.4;pointer-events:none;animation:floatUp 18s linear infinite}@keyframes floatUp{0%{transform:translateY(0) scale(1);opacity:.4}to{transform:translateY(-80vh) scale(.5);opacity:0}}@media(max-width:800px){.scale-container{height:320px}#target-label{font-size:1.5rem}.item-shelf{padding-bottom:8px;gap:1rem}.shelf-container{height:110px}.scale-plate-overlay{width:140px;height:110px}.streak-display{right:75px;font-size:.95rem}.lock-in-btn{bottom:12px;padding:10px 24px;font-size:1.05rem}}@media(max-width:480px){.scale-container{height:270px}#target-label{font-size:1.25rem;padding:0 10px}.streak-display{right:70px;top:1rem;font-size:.85rem}.shelf-container{height:100px}.scale-plate-overlay{width:110px;height:90px}.speech-bubble{font-size:.8rem;max-width:150px;padding:6px 10px}}