@import url('/assets/fonts/fonts.css');*{box-sizing:border-box}body{margin:0;background:#f4f7f9;color:#183e50;font-family:'DM Sans',sans-serif}header{padding:16px 4%;border-bottom:1px solid #bdcbd3;display:flex;justify-content:space-between}a{color:inherit}main{max-width:1250px;margin:auto;padding:24px}h1{font:700 34px Literata,serif;margin:10px 0}.eyebrow{font-size:12px;letter-spacing:2px}.layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(270px,1fr);gap:24px;align-items:start}.map-wrap{min-width:0}#map{width:100%;display:block;touch-action:none;border:2px solid #9eafb8;border-radius:12px;background:white}#map:focus-visible{outline:3px solid #d29215}#map text{font-family:'DM Sans',sans-serif}.panel{padding:22px;background:white;border:1px solid #b9cbd3;border-radius:12px}button,input{font:inherit;min-height:46px;border:1px solid #8ca3ad;border-radius:8px;padding:12px;color:inherit;background:white}button{cursor:pointer}button:disabled{opacity:.5;cursor:default}button:focus-visible,input:focus-visible{outline:3px solid #d29215;outline-offset:2px}input{width:100%;font-size:25px;margin:10px 0}label{font-weight:bold;display:block}#feedback{min-height:48px;line-height:1.6}#feedback.good{color:#267b45;font-weight:bold}.primary{background:#285e48;color:white}#pair{font-size:30px;font-weight:bold;margin:20px 0}.small{font-size:13px;line-height:1.5}.progress{line-height:2;padding-left:20px}.done{color:#267b45}.courier{background:#edf0dd}.courier .panel{background:#fffaf0;border-color:#b3a77c}.coin{background:#fff1bd;border:1px solid #c09a35;padding:12px 16px;border-radius:30px;display:inline-block;font-weight:bold}.intro{max-width:800px;margin:30px auto;padding:28px;background:#fffaf0;border:1px solid #b3a77c;border-radius:14px}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:14px 0}.notice{font-size:13px;color:#795600}#help{line-height:1.65}#next{margin-top:10px}[hidden]{display:none!important}@media(max-width:780px){main{padding:12px}.layout{grid-template-columns:1fr}.panel{padding:16px}h1{font-size:28px}header span{display:none}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}

.choice-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin:28px 0}.choice-grid button{text-align:left;padding:28px;background:white;border:2px solid #9fb8c4;border-radius:14px}.choice-grid strong{display:block;font-size:1.4rem;margin-bottom:12px}.choice-grid span{display:block;line-height:1.5}#correct-overlay{position:fixed;inset:0;display:grid;place-items:center;z-index:20;pointer-events:none;color:#138139;background:#ffffffa6;font-size:clamp(3rem,12vw,8rem);font-weight:900;text-shadow:0 3px 0 white}.plot-correct{box-shadow:0 0 20px #22b455;border-color:#168a3d!important}

#delivery-success{position:fixed;inset:0;z-index:30;display:grid;place-items:center;pointer-events:none;background:#ffffff38}
#delivery-success>div{text-align:center;padding:28px 40px;margin:20px;border:3px solid #328348;border-radius:18px;background:#fffbeaee;box-shadow:0 0 36px #f3cd6299;color:#226338}
#delivery-success strong{display:block;font-size:clamp(2.5rem,7vw,5rem)}
#delivery-success span{display:block;font-size:clamp(1.2rem,3.5vw,2.3rem);font-weight:700;color:#795009;margin-top:12px}

header{align-items:center;gap:16px;flex-wrap:wrap}.activity-link{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:12px 18px;border:1px solid #285e48;border-radius:8px;background:#285e48;color:white;font-weight:700;text-decoration:none;text-align:center;margin-left:auto}.activity-link:hover{background:#1c4836}.activity-link:focus-visible{outline:3px solid #d29215;outline-offset:3px}

/* Keep the activity link above the graph, clear of the instruction panel. */
.layout{row-gap:14px}.layout>.toolbar{grid-column:1;grid-row:1;margin:0;flex-wrap:wrap}.layout>.map-wrap{grid-column:1;grid-row:2}.layout>.panel{grid-column:2;grid-row:2}#activity{margin-top:14px}.toolbar .activity-link{max-width:100%}
@media(max-width:780px){.layout>.panel{grid-column:1;grid-row:3}.toolbar{gap:10px}.toolbar .activity-link{font-size:14px;padding:10px 12px}}
/* Courier map: native scrolling is essential on phones, especially in landscape. */
body[data-mode="courier"]{min-height:100%;overflow-y:auto;touch-action:auto}
body[data-mode="courier"] #map{touch-action:auto;max-width:none;height:auto;aspect-ratio:1;flex-shrink:0}
.courier-map-viewport{width:100%;max-height:72svh;overflow:auto;border-radius:12px;touch-action:pan-x pan-y;scrollbar-width:thin;-webkit-overflow-scrolling:touch}
.map-zoom-controls{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:10px}
.map-zoom-controls button{min-width:46px;padding:8px 12px;touch-action:manipulation}
.map-zoom-controls output{min-width:48px;text-align:center;font-weight:700}
.map-zoom-controls span{font-size:12px;line-height:1.4;flex-basis:100%}
@media(orientation:landscape) and (min-width:600px){
 body[data-mode="courier"] .layout{grid-template-columns:minmax(0,1.45fr) minmax(250px,1fr);gap:12px}
 body[data-mode="courier"] .layout>.panel{grid-column:2;grid-row:2;padding:14px;position:sticky;top:8px;max-height:calc(100svh - 16px);overflow-y:auto;touch-action:pan-y}
 body[data-mode="courier"] .layout>.map-wrap{grid-column:1;grid-row:2}
 body[data-mode="courier"] .courier-map-viewport{max-height:80svh}
 body[data-mode="courier"] .panel h2{margin:0 0 10px;font-size:21px}
 body[data-mode="courier"] #pair{margin:8px 0}
 body[data-mode="courier"] #help{margin:8px 0;font-size:14px}
 body[data-mode="courier"] #feedback{min-height:0}
}