*{box-sizing:border-box}body{margin:0;background:#f7f5ed;color:#193c30;font-family:"Helvetica Neue",Arial,sans-serif}a{color:inherit}header{border-bottom:1px solid #d5ddce;padding:18px 5%;display:flex;align-items:center;justify-content:space-between}header a{text-decoration:none;font-weight:700}header img{width:54px;vertical-align:middle;margin-right:10px}main{max-width:850px;margin:auto;padding:42px 20px 70px}.eyebrow{text-transform:uppercase;letter-spacing:.16em;font-size:.75rem;font-weight:700;color:#556a50}h1{font-size:clamp(3rem,10vw,5.4rem);letter-spacing:-.065em;line-height:1;margin:16px 0}h2{font-size:clamp(1.6rem,5vw,2.3rem);letter-spacing:-.035em}p{line-height:1.6}.intro{max-width:540px;color:#53624f}.edition{display:flex;gap:15px;flex-wrap:wrap;margin:28px 0;font-size:.85rem}.pill{border:1px solid #cad5c3;padding:7px 12px;border-radius:99px}.choices{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:25px 0}button,.card{font:inherit;border:1px solid #b8c8af;border-radius:18px;background:#fffdf7;padding:24px;color:inherit}button{cursor:pointer}button:hover{border-color:#286145;background:#eef3e5}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #a5681c;outline-offset:4px}.choice{text-align:left;min-height:220px;position:relative}.choice .symbol{font-size:3rem;display:block;margin-bottom:24px}.choice strong{font-size:1.35rem;display:block;margin-bottom:8px}.choice span{line-height:1.5}.choice:disabled{cursor:default;opacity:.75}.choice.selected{border:3px solid #286145;padding:22px}.hint{font-size:.9rem;color:#53624f}.result{background:#e7eddb;padding:26px;border-radius:20px;margin:28px 0}.result h2{margin-top:8px}.quantity{font-size:clamp(1.5rem,5vw,2.1rem);font-weight:700;overflow-wrap:anywhere}.math{background:#fffdf7;padding:22px;border-radius:14px;margin:16px 0}.math h3{margin-top:0}.equation{font-family:ui-monospace,monospace;font-size:.9rem;line-height:1.8;overflow-wrap:anywhere}.actions{display:flex;gap:12px;flex-wrap:wrap}.actions button{padding:13px 22px;border-radius:10px;background:#193c30;color:white}.status{font-size:.9rem;line-height:1.5}textarea{width:100%;min-height:240px;padding:15px;font:inherit}.card{display:block;text-decoration:none;margin:26px 0;transition:transform .2s}.card:hover{transform:translateY(-3px)}footer{margin-top:40px;border-top:1px solid #d5ddce;padding-top:20px;font-size:.8rem;color:#53624f}summary{cursor:pointer;padding:16px 0;font-weight:700}[hidden]{display:none!important}@media(max-width:540px){.choices{grid-template-columns:1fr}.choice{min-height:155px;padding:20px}.choice .symbol{float:right;margin:0 0 12px 12px}.choice.selected{padding:18px}main{padding-top:26px}}
.explorer-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.explorer-grid fieldset{border:1px solid #b8c8af;border-radius:12px;min-width:0;padding:16px}.explorer-grid legend{font-weight:700}.explorer-grid label{display:block;font-size:.9rem;margin:14px 0 6px}.explorer-grid select,.explorer-grid input{font:inherit;width:100%;min-height:44px;border:1px solid #8b9c84;border-radius:7px;background:#fffdf7;color:#193c30;padding:10px}.comparison-bars{display:grid;gap:8px;margin:20px 0}.comparison-bars div{background:#466539;color:#fff;padding:8px;min-width:0;max-width:100%;height:18px;padding:0;border-radius:5px;font-size:0}.comparison-bars #b-bar{background:#76501e}#explorer-result{font-weight:700}@media(max-width:540px){.explorer-grid{grid-template-columns:1fr}}

.bonus-meme{display:block;width:100%;max-width:640px;height:auto;border-radius:12px;margin:24px auto}.question-link{display:block;min-height:44px;padding:14px;border:1px solid #b8c8af;border-radius:9px;margin:8px 0}.explorer-grid label{min-width:0}.explorer-grid input,.explorer-grid select{max-width:100%}
/* Interactive measurement exhibit. */
.measurement-exhibit{--ink:#193c30;--moon:#315d72;--sun:#81501b;margin:34px 0;padding:24px;background:#efeee4;border:1px solid #c9d0bf;border-radius:24px;overflow:hidden}.exhibit-header h2{font-size:clamp(1.8rem,5vw,2.6rem);line-height:1.08;margin:12px 0;letter-spacing:-.045em}.exhibit-header>p{margin:12px 0}.official-lock{display:inline-block;font-size:.8rem;background:#e1ead8;border:1px solid #b8c8af;border-radius:8px;padding:8px 10px;color:#24472b}.exhibit-panels{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:20px 0 12px}.exhibit-panel{min-width:0;background:#f6f9f9;border:2px solid #c0ced0;border-radius:18px;padding:18px;transition:background-color .2s,border-color .2s,box-shadow .2s}.exhibit-panel[data-side=b]{background:#fcf7ec;border-color:#d9cdb6}.exhibit-panel[data-side=a][data-leading=true]{border-color:var(--moon);box-shadow:inset 0 0 0 1px var(--moon);background:#edf5f7}.exhibit-panel[data-side=b][data-leading=true]{border-color:var(--sun);box-shadow:inset 0 0 0 1px var(--sun);background:#fff5df}.journey-heading{display:flex;align-items:center;gap:8px}.journey-heading>span{font-size:1.5rem}.journey-heading h3{font-size:1rem;margin:0;letter-spacing:-.02em}.creature-row{display:grid;grid-template-columns:100px 1fr;align-items:center;gap:8px;min-height:98px}.creature-art{transform:scale(var(--creature-size,1));transform-origin:center;transition:transform .12s linear}.creature-art svg{width:100%;height:auto;display:block}.creature-count{min-width:0}.creature-count strong{display:block;font-variant-numeric:tabular-nums;font-size:clamp(1.7rem,4vw,2.35rem);letter-spacing:-.055em;line-height:1.05}.creature-count>span{display:block;font-size:.82rem;margin-top:5px;line-height:1.3}.control-heading{display:flex;justify-content:space-between;align-items:center;gap:8px}.control-heading label{font-size:.83rem;font-weight:700}.control-heading output{font-size:1.1rem;font-weight:750;white-space:nowrap;font-variant-numeric:tabular-nums}.measurement-exhibit input[type=range]{display:block;width:100%;height:44px;margin:4px 0 0;padding:0;background:transparent;cursor:ew-resize;appearance:none;-webkit-appearance:none;touch-action:pan-y;accent-color:var(--moon)}.measurement-exhibit input[type=range]::-webkit-slider-runnable-track{height:8px;border-radius:9px;background:linear-gradient(to right,var(--moon) var(--range-fill),#d2dcdf var(--range-fill))}.measurement-exhibit input[type=range]::-moz-range-track{height:8px;border-radius:9px;background:#d2dcdf}.measurement-exhibit input[type=range]::-moz-range-progress{height:8px;background:var(--moon);border-radius:9px}.measurement-exhibit input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:30px;height:30px;border:3px solid white;border-radius:50%;background:var(--moon);margin-top:-11px;box-shadow:0 1px 5px #193c3045}.measurement-exhibit input[type=range]::-moz-range-thumb{width:26px;height:26px;border:3px solid white;border-radius:50%;background:var(--moon);box-shadow:0 1px 5px #193c3045}.exhibit-panel[data-side=b]{--moon:var(--sun)}.measurement-exhibit input[type=range]:focus-visible{outline:3px solid #98601e;outline-offset:3px;border-radius:6px}.slider-extents{display:flex;justify-content:space-between;font-size:.75rem;color:#4c6157;font-variant-numeric:tabular-nums}.exhibit-verdict{text-align:center;padding:18px 18px 14px;border-radius:16px;background:#e3eadb;transition:background-color .25s}.exhibit-verdict[data-winner=a]{background:#dcebf0;animation:discover-a .4s ease-out}.exhibit-verdict[data-winner=b]{background:#f5e8c9;animation:discover-b .4s ease-out}.experiment-observation{font-size:1.1rem;font-weight:750;margin:0 0 4px}.experiment-ratio{font-size:clamp(2.4rem,7vw,3.2rem);font-weight:750;letter-spacing:-.055em;font-variant-numeric:tabular-nums;line-height:1.1}.ratio-caption{font-size:.85rem;margin:4px 0 18px}.balance-scale{position:relative;height:8px;border-radius:8px;background:linear-gradient(to right,#557e90,#cbd8d0 49%,#c6d0b8 51%,#b08447);margin:14px 0 12px}.balance-midpoint{position:absolute;left:50%;top:-4px;width:2px;height:16px;background:#53624f}.balance-pointer{position:absolute;top:-5px;width:18px;height:18px;border-radius:50%;background:#193c30;border:3px solid white;transform:translateX(-50%);transition:left .18s ease-out}.balance-labels{display:flex;justify-content:space-between;font-size:.72rem;color:#30473a}.exhibit-bottom{display:flex;align-items:center;gap:14px;margin-top:18px}.experiment-reset{padding:12px 15px;font-size:.85rem;border-radius:9px;min-height:44px;background:#fffdf7;white-space:nowrap}.experiment-hint{font-size:.82rem;line-height:1.4;color:#46594a}.experiment-math{margin-top:10px}.experiment-math summary{font-size:.85rem}.experiment-math>p,.experiment-sources{font-size:.82rem;line-height:1.6}.experiment-equations .equation{font-size:.78rem;background:#fffdf7;padding:14px;border-radius:10px;line-height:1.8}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}@keyframes discover-a{from{box-shadow:0 0 0 4px #315d7250}to{box-shadow:0 0 0 0 transparent}}@keyframes discover-b{from{box-shadow:0 0 0 4px #81501b40}to{box-shadow:0 0 0 0 transparent}}@media(max-width:600px){.measurement-exhibit{padding:18px 14px;margin:26px -4px}.exhibit-panels{grid-template-columns:1fr;gap:12px;margin-top:14px}.exhibit-panel{padding:14px}.creature-row{grid-template-columns:100px 1fr;min-height:82px}.creature-count strong{font-size:2rem}.creature-count>span{font-size:.85rem}.control-heading output{font-size:1.2rem}.exhibit-bottom{flex-direction:column;align-items:stretch;gap:10px}.experiment-hint{text-align:center}.exhibit-verdict{padding:16px 12px}.official-lock{line-height:1.5}}@media(prefers-reduced-motion:reduce){.measurement-exhibit *,.measurement-exhibit *::before,.measurement-exhibit *::after{animation:none!important;transition:none!important}}

.reset-game-progress{padding:10px 14px;min-height:44px;font-size:.8rem;background:transparent;border-radius:8px;margin-bottom:18px}

.exhibit-glyph{display:block;font-size:3.2rem;text-align:center}

.game-reset-dialog{max-width:500px;width:calc(100% - 32px);padding:26px;border:1px solid #b8c8af;border-radius:18px;background:#fffdf7;color:#193c30}.game-reset-dialog::backdrop{background:#193c3080}.game-reset-dialog h2{margin-top:0}.game-reset-dialog button{min-height:44px;padding:12px 16px}

.day-overview{background:#e7eddb;border:1px solid #cad5c3;border-radius:18px;padding:20px;margin:8px 0 28px}.day-overview h2{font-size:1.4rem;margin:0}.day-overview p{margin:10px 0}.day-overview a{display:inline-block;min-height:44px;margin-right:16px;padding:12px 0;font-weight:700}.day-question{scroll-margin-top:24px}.bonus-question{border-top:3px solid #b8c8af;padding-top:20px;margin-top:48px}.bonus-question>.edition{margin-top:8px}.bonus-question>.edition .pill:first-child{background:#193c30;color:#fffdf7}.day-question .edition{gap:10px}.day-question h2:focus{outline:none}
/* Bonus skyline: both total heights use one scale; controls create imaginary stacks. */
.figure-choices{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 12px}.figure-chip{padding:11px 14px;border-radius:99px;min-height:44px;font-size:.85rem}.figure-chip[aria-pressed=true]{background:#193c30;color:#fffdf7;border-color:#193c30;box-shadow:0 0 0 2px #efeee4,0 0 0 4px #557e90}.figure-fact{font-size:.85rem;min-height:44px;color:#46594a}.height-scene{height:270px;position:relative;display:flex;justify-content:space-around;align-items:flex-end;border-bottom:3px solid #738a71;margin:38px 16px 0;background:repeating-linear-gradient(to top,transparent 0,transparent 53px,#c9d0bf65 54px);isolation:isolate}.height-reference{position:absolute;left:0;right:0;border-top:1px dashed #315d72;z-index:-1;transition:bottom .18s}.height-column{width:28%;max-width:140px;position:relative;transition:height .18s ease-out;min-height:1px}.skyline-quantity{position:absolute;bottom:calc(100% + 6px);width:100%;text-align:center;font-size:.85rem;font-weight:700;white-space:nowrap}.tower-silhouette{height:100%;background:#8caaaf;clip-path:polygon(0 5%,75% 0,100% 9%,100% 100%,0 100%);display:flex;justify-content:space-evenly;padding:14px 12px 0;border-bottom:0}.tower-silhouette span{width:7%;background:#315d7260}.figure-stack{height:100%;display:flex;flex-direction:column;gap:1px;overflow:hidden}.stack-piece{flex:1;min-height:0;background:#a77837;clip-path:polygon(15% 0,75% 0,100% 23%,100% 48%,86% 48%,86% 100%,70% 100%,70% 58%,30% 58%,30% 100%,14% 100%,14% 45%,0 45%,0 20%)}.figure-stack[data-figure=vader] .stack-piece{background:#344239;clip-path:polygon(42% 0,58% 0,65% 15%,65% 26%,76% 40%,92% 100%,8% 100%,24% 40%,35% 26%,35% 15%)}.figure-stack[data-figure=castle] .stack-piece{background:#805b50;clip-path:polygon(10% 100%,10% 30%,25% 30%,25% 0,40% 0,40% 50%,60% 50%,60% 0,75% 0,75% 30%,90% 30%,90% 100%)}.figure-stack[data-figure=antenna] .stack-piece{background:#907d46;clip-path:polygon(45% 0,55% 0,55% 15%,95% 20%,95% 35%,55% 30%,55% 70%,75% 100%,25% 100%,45% 70%,45% 30%,5% 35%,5% 20%,45% 15%)}.figure-stack[data-figure=ferrix] .stack-piece{background:#a36d4e;clip-path:polygon(10% 100%,10% 60%,25% 60%,25% 20%,40% 20%,40% 0,60% 0,60% 20%,75% 20%,75% 60%,90% 60%,90% 100%)}.skyline-labels{display:flex;justify-content:space-around;gap:12px;text-align:center;font-size:.8rem;margin:10px 0 24px}.skyline-labels>span{width:45%}.bonus-controls{border:1px solid #c9d0bf;background:#fffdf780;border-radius:16px;padding:18px;margin:18px 0}.estimate-control{border-top:1px solid #cad5c3;padding-top:16px;margin-top:16px}.bonus-exhibit .control-heading{flex-wrap:wrap}.bonus-exhibit .control-heading output{white-space:normal}.bonus-exhibit .experiment-hint{max-width:290px}@media(max-width:600px){.height-scene{height:230px;margin-left:4px;margin-right:4px}.bonus-controls{padding:14px}.figure-chip{flex-grow:1}.figure-fact{min-height:66px}.bonus-exhibit .control-heading{gap:6px}}@media(prefers-reduced-motion:reduce){.height-column,.height-reference{transition:none}}