.hero h2{font-size:clamp(27px,3vw,40px)}.welcome-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:24px 0 32px}.welcome-steps>div{border:1px solid #dbe3ce;background:#fff;border-radius:14px;padding:20px}.welcome-steps b{color:#34724d}.welcome-steps p{font-size:13px;color:#617463;margin-bottom:0}
.briefing{max-width:1050px;margin:0 auto;background:#fff;border:1px solid #dbe3ce;border-radius:22px;padding:30px}.lesson-goal{font-size:20px;color:#335e47;margin:12px 0 22px}.lesson-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:28px;align-items:center}.lesson-demo{display:block;width:100%;max-height:280px}.demo-note{display:block;color:#6a7d6c;font-size:11px;line-height:1.5}.lesson-steps{padding-left:23px;line-height:1.6;margin:0}.lesson-steps li{padding:5px 0 9px 8px}.lesson-steps li::marker{font-weight:bold;color:#318356}.lesson-hint{padding:14px;border-radius:10px;background:#eef4e1;font-size:13px;line-height:1.6}.lesson-start{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid #e0e7d6;margin-top:22px;padding-top:20px}.lesson-start span{font-size:12px;color:#657762}.briefing details{font-size:12px;padding:15px 0 0}.briefing details p{margin-bottom:0}
.demo-cursor{animation:demo-select 8s ease-in-out infinite}.demo-0 .demo-cursor{animation-name:demo-sort-cursor}.demo-waste{animation:demo-sort-waste 8s ease-in-out infinite}.demo-check{animation:demo-check 8s infinite}.demo-target{animation:demo-highlight 8s infinite}.demo-first{animation:demo-step 8s infinite}.demo-second{animation:demo-step 8s 2s infinite}.demo-third{animation:demo-step 8s 4s infinite}.demo-drill{stroke-dasharray:135;animation:demo-drill 8s infinite}.demo-greening{animation:demo-green 8s infinite}.demo-1 .demo-cursor,.demo-2 .demo-cursor,.demo-4 .demo-cursor{animation-name:demo-sequence}
@keyframes demo-sort-cursor{0%,10%{transform:translate(175px,130px)}20%,30%{transform:translate(115px,90px)}55%,80%{transform:translate(370px,172px)}90%,100%{transform:translate(175px,130px)}}
@keyframes demo-sort-waste{0%,30%{transform:translate(0,0);opacity:1}55%,68%{transform:translate(255px,82px);opacity:1}78%,88%{transform:translate(255px,82px);opacity:0}90%,100%{transform:translate(0,0);opacity:1}}
@keyframes demo-select{0%,15%{transform:translate(125px,95px)}40%,85%{transform:translate(215px,155px)}100%{transform:translate(125px,95px)}}
@keyframes demo-sequence{0%,20%{transform:translate(170px,62px)}33%,48%{transform:translate(170px,122px)}60%,85%{transform:translate(170px,188px)}100%{transform:translate(170px,62px)}}
@keyframes demo-check{0%,55%,100%{opacity:0}65%,85%{opacity:1}}@keyframes demo-highlight{0%,40%,100%{opacity:1}60%,80%{opacity:.55}}@keyframes demo-step{0%,25%,100%{opacity:1}10%,20%{opacity:.55}}@keyframes demo-drill{0%,50%{stroke-dashoffset:95}80%,100%{stroke-dashoffset:0}}@keyframes demo-green{0%,45%{opacity:.15}70%,100%{opacity:1}}
.reward{position:relative;overflow:hidden;text-align:center;padding:32px;border:1px solid #dbe3ce;border-radius:24px;background:#fff;max-width:1000px;margin:auto}.reward-success{background:radial-gradient(ellipse at top,#e8f3ce,white 65%)}.reward h1{max-width:760px;margin:15px auto}.reward-medal{display:grid;place-items:center;margin:18px auto;width:85px;height:85px;border:6px double #bd9b40;border-radius:50%;color:#8e702b;background:#f2dfa0;font-size:40px}.reward-message{max-width:680px;margin:15px auto;color:#45634c}.reward-score{font-size:18px;font-weight:bold;margin:18px}.reward-actions{justify-content:center;position:relative;z-index:1}.earned-badge{max-width:420px;margin:28px auto 16px}.earned-badge svg{width:100%;display:block}.confetti{position:absolute;inset:0;pointer-events:none;overflow:hidden}.confetti i{position:absolute;left:var(--x);top:-20px;width:8px;height:15px;border-radius:2px;background:var(--color);animation:reward-confetti 3s var(--delay) ease-out both}@keyframes reward-confetti{0%{transform:translateY(0) rotate(0);opacity:0}10%{opacity:1}100%{transform:translateY(500px) rotate(var(--rotate));opacity:0}}
/* Keep the instructions, timer and sorting controls together on small monitors. */
body:has(.variant-panel) main{padding-top:18px;padding-bottom:18px}body:has(.variant-panel) .topline{margin-bottom:10px}body:has(.variant-panel) h1{font-size:25px}body:has(.variant-panel) .stats{margin:12px 0;gap:10px}body:has(.variant-panel) .stat{padding:10px 14px}body:has(.variant-panel) .stat small{display:none}body:has(.variant-panel) .stat-icon{padding:5px}body:has(.variant-panel) .stat-meter{margin:0}.mission-task{margin:0 0 12px;padding:10px 14px;background:#eaf2dd;border-radius:9px;color:#345c40;font-size:13px}.mission-toolbar{position:sticky;top:0;z-index:3;background:var(--paper);padding:8px 0;margin-bottom:6px}.variant-panel{margin-top:8px}.sorting-layout .living-scene{height:85px}.sorting-layout .items{margin-top:10px;gap:6px}.sorting-layout .item{min-height:65px;padding:6px}.sorting-layout .bins{margin-top:10px}.sorting-layout .bin{min-height:56px}.sorting-layout .waste-icon{width:27px;height:27px}
@media(max-height:800px) and (min-width:761px){body:has(.variant-panel) header{height:58px}body:has(.variant-panel) main{padding-top:10px}body:has(.variant-panel) .topline .eyebrow,body:has(.variant-panel) .topline .badge{display:none}body:has(.variant-panel) .topline p{margin:0}.variant-panel{padding:16px}.sorting-layout .illustrated-scene{display:none}body:has(.variant-panel) .stats{margin:8px 0}body:has(.variant-panel) .stat{padding:7px 12px}.mission-task{margin-bottom:8px}.briefing{padding:22px}.lesson-demo{max-height:235px}.lesson-goal{margin:10px 0 15px}.lesson-start{margin-top:12px}}
@media(max-width:760px){.welcome-steps{grid-template-columns:1fr;gap:10px}.welcome-steps>div{padding:16px}.briefing,.reward{padding:20px}.lesson-grid{grid-template-columns:1fr;gap:15px}.lesson-demo{max-height:190px}.lesson-start{align-items:stretch;flex-direction:column}.lesson-goal{font-size:18px}.lesson-steps{font-size:14px}.demo-note{display:none}body:has(.variant-panel) .stats{gap:6px}body:has(.variant-panel) .stat{font-size:11px;padding:8px}.sorting-layout .illustrated-scene{display:none}.mission-toolbar{gap:6px}.mission-task{font-size:12px}.reward h1{font-size:26px}.reward-actions{flex-direction:column}.reward-actions button{width:100%}}
@media(prefers-reduced-motion:reduce){.confetti{display:none}.demo-waste,.demo-cursor{animation:none}.demo-cursor{transform:translate(210px,170px)}}.motion-off .confetti{display:none}.motion-off .demo-cursor{transform:translate(210px,170px)}
@media(min-width:901px){.variant-panel .game-layout{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr)}}
@media(max-width:900px){.variant-panel .game-layout{grid-template-columns:1fr}.variant-panel .game-layout .mission-controls{grid-row:1}.variant-panel .game-layout .illustrated-scene{grid-row:2}}
@media(max-height:650px) and (min-width:761px){body:has(.variant-panel) header{height:48px}body:has(.variant-panel) main{padding:8px 24px}body:has(.variant-panel) h1{font-size:21px;margin:5px 0}body:has(.variant-panel) .stats{margin:5px 0}body:has(.variant-panel) .stat{padding:5px 10px}.mission-toolbar{padding:4px 0}.mission-toolbar button{padding:9px 14px}.variant-panel{padding:12px}.mission-task{padding:8px 10px;font-size:12px}.sorting-layout .item{min-height:55px;font-size:10px}.sorting-layout .waste-icon{width:22px;height:22px}.sorting-layout .bin{min-height:44px;font-size:11px}}
.card-bottom{flex-wrap:wrap;gap:10px}.card button[data-practice]{display:block;width:100%;padding:11px 12px;border:1px solid #729c78;border-radius:8px;background:#e2eed9;color:#245b3a;text-align:center;font-size:12px}.card button[data-practice]:hover{background:#cee4bf;box-shadow:0 2px 8px #244c3b18}.training-card-note{display:block;width:100%;font-size:10px;line-height:1.5;color:#617661;text-align:center}.practice-notice{display:flex;flex-wrap:wrap;align-items:center;gap:5px 14px;border-left:4px solid #b08737;background:#faf0d5;color:#705820;padding:10px 14px;border-radius:8px;margin-bottom:12px;font-size:12px}.practice-notice span{font-size:11px}.sort-picker{display:grid;gap:8px;padding:12px;background:#f3f7ec;border:1px solid #d3dfc6;border-radius:10px;font-size:13px}.sort-picker select{padding:9px;border:1px solid #96b185;border-radius:6px;background:#fff;color:#244c3b;width:100%}.sort-picker small{font-size:11px;line-height:1.4;color:#62745e}.briefing:has(.sort-picker) .lesson-steps{font-size:14px;line-height:1.45}.briefing:has(.sort-picker) .lesson-steps li{padding-bottom:5px}.briefing:has(.sort-picker) .lesson-hint{margin:8px 0;padding:10px}@media(max-height:650px) and (min-width:761px){body:has(.variant-panel) .practice-notice{padding:6px 10px;margin-bottom:6px}}
.briefing-resources .stats{margin:12px 0 4px}.briefing-resources .stat{padding:12px;grid-template-columns:30px 1fr auto;font-size:13px}.briefing-resources .stat-icon{padding:6px}.briefing-resources .stat small{display:none}.briefing-resources>button{margin-bottom:14px;font-size:12px;color:#34724d}.stat.tour-spotlight{position:relative;z-index:1002;background:#fff;outline:4px solid #d9ea9a;outline-offset:3px;box-shadow:0 0 28px #d9ea9a66}.tour-shade{position:fixed;inset:0;background:#0a2119c9;z-index:1001}.tour-card{position:fixed;z-index:1003;background:#fffef5;border:1px solid #d4dfbf;border-radius:18px;padding:22px;box-shadow:0 15px 55px #0005;color:#234c39;max-height:calc(100dvh - 24px);overflow:auto}.tour-card h2{font-size:22px;margin:10px 0}.tour-card p{font-size:14px;line-height:1.55;margin:12px 0}.tour-example{padding:12px;background:#eef4e1;border-radius:10px}.tour-card .tour-rule{font-size:12px;color:#596e58}.tour-card small{color:#6d805e}.tour-card .actions{justify-content:flex-end;margin-top:18px}.tour-card .eyebrow{font-size:10px}@media(max-width:760px){.briefing-resources .stat{display:block;padding:8px;font-size:11px}.briefing-resources .stat b{font-size:18px}.tour-card{padding:17px}.tour-card h2{font-size:20px}.tour-card p{font-size:13px}}
.demo-mode{display:flex;gap:10px;align-items:center;flex-wrap:wrap;font-size:11px;margin-bottom:8px}.demo-mode select{min-width:0;max-width:100%;padding:7px;border:1px solid #bacbb1;border-radius:7px;background:#fff;color:#345c40;font-size:11px}.demo-gesture{font-size:12px;line-height:1.5;color:#486847;margin:8px 0 12px}.demo-finger{display:none}.lesson-demo[data-input=touch] .demo-cursor{display:none}.lesson-demo[data-input=touch] .demo-finger{display:block;animation:touch-choice 8s infinite}.lesson-demo[data-input=touch] .tap-ring{animation:tap-pulse 8s infinite;transform-origin:0 0}.lesson-demo[data-input=touch].demo-0 .demo-finger{animation-name:touch-sort}.lesson-demo[data-input=touch].demo-0 .demo-waste{animation:touch-sort-item 8s infinite}.lesson-demo[data-input=touch].demo-1 .demo-finger,.lesson-demo[data-input=touch].demo-2 .demo-finger,.lesson-demo[data-input=touch].demo-4 .demo-finger{animation-name:touch-sequence}.lesson-demo[data-input=touch].demo-1 .tap-ring,.lesson-demo[data-input=touch].demo-2 .tap-ring,.lesson-demo[data-input=touch].demo-4 .tap-ring{animation-name:tap-sequence}
@keyframes touch-sort{0%,24%{transform:translate(115px,90px);opacity:1}30%,40%{transform:translate(115px,90px);opacity:0}41%,45%{transform:translate(370px,172px);opacity:0}50%,72%{transform:translate(370px,172px);opacity:1}80%,100%{transform:translate(370px,172px);opacity:0}}
@keyframes touch-sort-item{0%,58%,100%{opacity:1;transform:none}65%,90%{opacity:0;transform:none}}
@keyframes touch-choice{0%,25%{transform:translate(215px,155px);opacity:0}40%,72%{transform:translate(215px,155px);opacity:1}85%,100%{transform:translate(215px,155px);opacity:0}}
@keyframes touch-sequence{0%,23%{transform:translate(170px,60px);opacity:1}27%{transform:translate(170px,60px);opacity:0}30%{transform:translate(170px,122px);opacity:0}34%,49%{transform:translate(170px,122px);opacity:1}53%{transform:translate(170px,122px);opacity:0}57%{transform:translate(170px,188px);opacity:0}61%,80%{transform:translate(170px,188px);opacity:1}87%,100%{transform:translate(170px,188px);opacity:0}}
@keyframes tap-pulse{0%,8%,25%,48%,65%,100%{opacity:0;transform:scale(.5)}15%,56%{opacity:1;transform:scale(1)}22%,63%{opacity:0;transform:scale(1.5)}}
@keyframes tap-sequence{0%,5%,26%,33%,52%,60%,83%,100%{opacity:0;transform:scale(.5)}12%,40%,69%{opacity:1;transform:scale(1)}23%,49%,80%{opacity:0;transform:scale(1.5)}}
.motion-off .demo-finger{transform:translate(210px,155px)}.motion-off .demo-0 .demo-finger{transform:translate(115px,90px)}@media(prefers-reduced-motion:reduce){.demo-finger{transform:translate(210px,155px)}.demo-0 .demo-finger{transform:translate(115px,90px)}}
.quarry-sapling{transform-box:fill-box;transform-origin:center bottom;animation:quarry-sprout 1.8s ease-out both}@keyframes quarry-sprout{from{transform:scale(.05,.01);opacity:0}25%{opacity:1}80%{transform:scale(1.03,1.04)}to{transform:scale(1);opacity:1}}:is(.quarry-reward,.spill-reward){margin:16px auto 10px;max-width:620px}:is(.quarry-reward,.spill-reward)>p{font-size:14px;margin:8px 0}:is(.quarry-reward,.spill-reward) .outcome-scene{margin-bottom:3px}:is(.quarry-reward,.spill-reward) .living-scene{max-height:270px;min-height:0}.reward:has(:is(.quarry-reward,.spill-reward)) .reward-medal{display:none}.reward:has(:is(.quarry-reward,.spill-reward)) .reward-message{font-size:13px;margin:10px auto}.reward:has(:is(.quarry-reward,.spill-reward)){padding:22px}.reward:has(:is(.quarry-reward,.spill-reward)) .reward-score{margin:10px}:is(.quarry-reward,.spill-reward) .grade-line,:is(.quarry-reward,.spill-reward) .grass-grow{animation:none}@media(max-height:700px) and (min-width:761px){:is(.quarry-reward,.spill-reward) .living-scene{max-height:225px}.reward:has(:is(.quarry-reward,.spill-reward)) h1{font-size:25px;margin:10px auto}:is(.quarry-reward,.spill-reward){margin-top:10px}}

.spill-reward .service-truck{animation-duration:1.5s}.spill-reward .oil-area.cleaned{animation:spill-final-cleanup 2.6s ease-in-out both}.spill-reward .boom-deploy,.spill-reward .sorbent-grain{animation:none}@keyframes spill-final-cleanup{0%,50%{opacity:1}100%{opacity:0}}
#sound{font-size:14px;color:#305c45}#audio-settings{width:330px;max-width:calc(100vw - 24px);max-height:calc(100dvh - 100px);overflow-y:auto;gap:12px}#audio-settings input[type=range]{width:100%;height:22px;margin:0;accent-color:#387b50}#audio-settings .volume-control{font-size:12px;justify-content:space-between;gap:8px}#audio-settings output{font-variant-numeric:tabular-nums;font-weight:bold;color:#346c46}#audio-settings #motion{max-width:none;width:100%;text-align:left;padding:12px;border-top:1px solid #d8dfcb;border-bottom:1px solid #d8dfcb;font-size:13px;color:#345e40}.resource-icon{width:24px;height:24px;display:inline-block;vertical-align:middle;flex-shrink:0}.resource-eco{color:#377747}.resource-gold{color:#a27820}.resource-social{color:#397c99}.stat-icon .resource-icon{width:21px;height:21px}.resource-changes{display:grid;gap:5px;margin-top:5px}.resource-change{display:grid;grid-template-columns:19px minmax(0,max-content) max-content max-content;justify-content:start;gap:6px;align-items:center;font-size:12px}.resource-change .resource-icon{width:18px;height:18px}.resource-change b{color:#356849;white-space:nowrap}.resource-change.decrease b{color:#9d553b}.resource-change .change-meaning{font-size:10px;color:#637360}.menu-toggle{display:none}@media(max-width:760px){aside{position:relative;padding:15px 58px 15px 15px}aside .brand{justify-content:flex-start}.menu-toggle{display:block;position:absolute;right:15px;top:17px;border:1px solid #c2d3b8;border-radius:8px;background:#e7efdd;color:#2c6542;font-size:23px;width:38px;height:38px}#main-nav{display:none;margin:14px -43px 0 0;padding-top:10px;border-top:1px solid #dbe4d2;overflow:visible}.menu-open #main-nav{display:grid;gap:4px}#main-nav a{padding:13px 12px;white-space:normal;font-size:14px}#audio-settings{right:12px;max-height:calc(100dvh - 145px)}.stat .stat-icon{display:inline-flex;padding:0;background:none;float:left;margin-right:5px}.stat .stat-icon .resource-icon{width:17px;height:17px}.resource-change{font-size:12px}.resource-change .change-meaning{font-size:10px}}
.bin{display:flex;align-items:center;justify-content:center;gap:7px}.bin-icon{width:30px;height:30px;flex-shrink:0}.bin-icon-plastic{color:#477d9c}.bin-icon-paper{color:#aa7b30}.bin-icon-foam{color:#7964a0}.bin-icon-trash{color:#7e7465}.demo-fourth{animation:demo-step 8s 6s infinite}.demo-2 .demo-cursor{animation-name:quarry-four-clicks}.lesson-demo[data-input=touch].demo-2 .demo-finger{animation-name:quarry-four-taps}.lesson-demo[data-input=touch].demo-2 .tap-ring{animation-name:quarry-four-pulses}@keyframes quarry-four-clicks{0%,19%{transform:translate(225px,44px)}25%,44%{transform:translate(225px,103px)}50%,69%{transform:translate(225px,162px)}75%,94%{transform:translate(225px,221px)}100%{transform:translate(225px,44px)}}@keyframes quarry-four-taps{0%,18%{transform:translate(225px,44px);opacity:1}22%{opacity:0;transform:translate(225px,44px)}25%{opacity:0;transform:translate(225px,103px)}30%,43%{opacity:1;transform:translate(225px,103px)}47%{opacity:0;transform:translate(225px,103px)}50%{opacity:0;transform:translate(225px,162px)}55%,68%{opacity:1;transform:translate(225px,162px)}72%{opacity:0;transform:translate(225px,162px)}75%{opacity:0;transform:translate(225px,221px)}80%,93%{opacity:1;transform:translate(225px,221px)}100%{opacity:0;transform:translate(225px,221px)}}@keyframes quarry-four-pulses{0%,20%,25%,45%,50%,70%,75%,95%,100%{opacity:0;transform:scale(.5)}10%,35%,60%,85%{opacity:1;transform:scale(1.25)}}
@media(max-width:760px){.bin-icon{width:24px;height:24px}.bin{gap:5px;font-size:11px}}
.expedition-intro{margin:10px 0 0;padding-left:20px}.expedition-intro li{margin:8px 0;line-height:1.5}
.reset-player{color:#8b513b;border-color:#d8bcb0}.side-bottom .reset-player{margin-bottom:22px;width:100%;font-size:12px}#audio-settings .reset-player{margin-top:2px}

/* Keep the reward SVG at its native ratio: no empty side strips to drive over. */
.quarry-reward .quarry-world{width:min(100%,480px);height:auto;max-height:none;margin-inline:auto}
@media(max-height:700px) and (min-width:761px){.quarry-reward .quarry-world{width:min(100%,400px);max-height:none}}

/* Mission layouts use the available window, without hiding the landscape. */
body:has(.variant-panel) main{max-width:1680px;padding-inline:clamp(16px,2vw,36px)}
.variant-panel .illustrated-scene{display:block;align-self:start}
.variant-panel .illustrated-scene .living-scene{display:block;width:100%;height:auto;min-height:0;max-height:none;aspect-ratio:16/9}
.variant-panel .sorting-layout,.variant-panel .game-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:clamp(14px,2vw,28px);align-items:start}
.variant-panel .mission-controls{min-width:0;grid-row:auto}
.variant-panel .illustrated-scene{grid-row:auto}
.variant-panel .sorting-layout .items{margin-top:0;grid-template-columns:repeat(5,minmax(0,1fr))}
.variant-panel .sorting-layout .item{min-width:0;overflow-wrap:anywhere}
.variant-panel .sorting-layout .bins{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.variant-panel .sorting-layout .bin{min-width:0;padding:8px;font-size:12px}
@media(min-width:761px) and (max-height:800px){
 body:has(.variant-panel) aside{width:200px;padding:22px 14px}
 body:has(.variant-panel) .workspace{margin-left:200px}
 body:has(.variant-panel) .topline h1{margin:4px 0}
 .variant-panel .sorting-layout,.variant-panel .game-layout{grid-template-columns:minmax(0,.9fr) minmax(0,1.2fr);gap:16px}
 .variant-panel .illustrated-scene{max-width:calc(clamp(150px,100dvh - 330px,360px)*16/9)}
 .variant-panel .mission-controls h3{margin:0 0 8px;font-size:16px}
 .variant-panel .mission-controls p{margin:6px 0;line-height:1.4;font-size:13px}
 .variant-panel .options{gap:7px}
 .variant-panel .option{padding:10px 12px}
 .variant-panel .project-labels{padding:8px;font-size:11px}
 .variant-panel .feedback{padding:8px 12px;margin-top:10px}
 .variant-panel .sorting-layout .item{min-height:58px;font-size:11px}
 .variant-panel .sorting-layout .bin{min-height:46px;font-size:11px}
}
@media(min-width:761px) and (max-height:650px){
 body:has(.variant-panel) aside{width:180px}
 body:has(.variant-panel) .workspace{margin-left:180px}
 body:has(.variant-panel) .side-caption{margin-top:24px}
 .variant-panel .sorting-layout .item{min-height:52px;padding:4px;font-size:10px}
 .variant-panel .sorting-layout .bin-icon{width:23px;height:23px}
 .variant-panel .sorting-layout .bins{gap:5px;margin-top:6px}
 .variant-panel .option{padding:8px 10px;font-size:12px}
 .variant-panel .resource-changes{gap:2px}
}
@media(max-width:760px){
 .variant-panel .sorting-layout,.variant-panel .game-layout{grid-template-columns:minmax(0,1fr);gap:12px}
 .variant-panel .illustrated-scene{grid-row:1;width:min(100%,calc(clamp(130px,24dvh,220px)*16/9));margin-inline:auto}
 .variant-panel .mission-controls{grid-row:2}
 .variant-panel .sorting-layout .items{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}
 .variant-panel .sorting-layout .item{min-height:64px;font-size:11px}
 .variant-panel .sorting-layout .bin{min-height:48px}
}

@media(min-width:761px){
 .variant-panel .sorting-layout .mission-controls{display:contents}
 .variant-panel .sorting-layout .items{grid-column:2;grid-row:1}
 .variant-panel .sorting-layout .bins{grid-column:1 / -1;grid-row:2;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:0}
}
@media(min-width:761px) and (max-height:650px){
 body:has(.variant-panel) .topline p{display:none}
 body:has(.variant-panel) .stats .stat{display:grid;grid-template-columns:24px minmax(0,1fr) auto;gap:5px;font-size:12px}
 body:has(.variant-panel) .stats .stat b{font-size:20px}
 .variant-panel .sorting-layout{row-gap:8px}
 .variant-panel .sorting-layout .item{line-height:1.15;gap:3px}
}

@media(min-width:761px) and (max-height:800px){
 .variant-panel .game-layout:has(.resource-changes){grid-template-columns:minmax(0,.8fr) minmax(0,1.3fr);row-gap:6px}
 .variant-panel .game-layout:has(.resource-changes) .illustrated-scene{grid-column:1;grid-row:1 / 4;max-width:260px}
 .variant-panel .game-layout:has(.resource-changes) .mission-controls{display:contents}
 .variant-panel .game-layout:has(.resource-changes) .mission-controls>.eyebrow{grid-column:2;grid-row:1;align-self:end}
 .variant-panel .game-layout:has(.resource-changes) .mission-controls>h3{grid-column:2;grid-row:2}
 .variant-panel .game-layout:has(.resource-changes) .mission-controls>p{grid-column:2;grid-row:3}
 .variant-panel .game-layout:has(.resource-changes) .options{grid-column:1 / -1;grid-row:4;grid-template-columns:repeat(3,minmax(0,1fr))}
 .variant-panel .game-layout:has(.resource-changes) .option{min-width:0}
 .variant-panel .game-layout:has(.resource-changes) .project-labels{display:none}
 .variant-panel .resource-change{font-size:11px;gap:4px;grid-template-columns:16px minmax(0,max-content) max-content max-content}
 .variant-panel .resource-change .resource-icon{width:16px;height:16px}
 .variant-panel .resource-change .change-meaning{font-size:9px}
}

@media(min-width:761px) and (max-width:900px){
 .variant-panel .game-layout .mission-controls,.variant-panel .game-layout .illustrated-scene{grid-row:auto}
}
@media(max-width:760px){
 .variant-panel .game-layout .illustrated-scene,.variant-panel .sorting-layout .illustrated-scene{grid-row:1}
 .variant-panel .game-layout .mission-controls,.variant-panel .sorting-layout .mission-controls{grid-row:2}
}

/* Sorting is one work area: items above their nearby collection bins. */
.variant-panel .sorting-layout .mission-controls{display:block;padding:12px;border:1px solid #dbe4d0;border-radius:12px;background:#f3f6eb}
.variant-panel .sorting-layout .items{grid-column:auto;grid-row:auto;grid-auto-rows:72px;min-height:72px}
.variant-panel .sorting-layout[data-sort-count="10"] .items{min-height:150px}
.variant-panel .sorting-layout[data-sort-count="15"] .items{min-height:228px}
.variant-panel .sorting-layout .bins{grid-column:auto;grid-row:auto;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:12px}
.variant-panel .sorting-layout[data-sort-count="5"] .items{grid-auto-rows:96px;min-height:96px}
.variant-panel .sorting-layout[data-sort-count="5"] .waste-icon{width:36px;height:36px}
.variant-panel .sorting-layout .item{height:100%;min-height:0;line-height:1.2}
@media(min-width:761px) and (max-height:650px){
 .variant-panel .sorting-layout{grid-template-columns:minmax(0,.7fr) minmax(0,1.4fr)}
 .variant-panel .sorting-layout .mission-controls{padding:8px}
 .variant-panel .sorting-layout .items{grid-auto-rows:58px;min-height:58px}
 .variant-panel .sorting-layout[data-sort-count="10"] .items{min-height:122px}
 .variant-panel .sorting-layout[data-sort-count="15"] .items{min-height:186px}
 .variant-panel .sorting-layout[data-sort-count="5"] .items{grid-auto-rows:78px;min-height:78px}
 .variant-panel .sorting-layout[data-sort-count="5"] .waste-icon{width:30px;height:30px}
 .variant-panel .sorting-layout .bins{grid-template-columns:repeat(4,minmax(0,1fr));margin-top:8px;gap:5px}
 .variant-panel .sorting-layout .bin{flex-direction:column;gap:3px;padding:5px;font-size:10px;min-height:58px}
}
@media(max-width:760px){
 .variant-panel .sorting-layout .items{grid-auto-rows:82px}
 .variant-panel .sorting-layout[data-sort-count="5"] .items{grid-auto-rows:82px;min-height:170px}
 .variant-panel .sorting-layout[data-sort-count="10"] .items{min-height:346px}
 .variant-panel .sorting-layout[data-sort-count="15"] .items{min-height:434px}
}

/* Clear, coloured navigation symbols on desktop and in the mobile drawer. */
#main-nav a{align-items:center;gap:10px}
#main-nav .nav-icon{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;flex:0 0 34px;border-radius:10px}
#main-nav .nav-icon svg{display:block;width:23px;height:23px}
.nav-icon-home{color:#236344;background:#e2efdf}
.nav-icon-missions{color:#276e92;background:#e1eff6}
.nav-icon-guide{color:#886024;background:#f7ecd5}
.nav-icon-leaders{color:#9b6118;background:#fff0cd}
.nav-icon-report{color:#71519a;background:#eee6f7}
#main-nav a.active .nav-icon{box-shadow:inset 0 0 0 1px currentColor}
@media(min-width:761px) and (max-height:650px){#main-nav .nav-icon{width:28px;height:28px;flex-basis:28px}#main-nav .nav-icon svg{width:21px;height:21px}}

/* Illustrated handbook: one live scene at a time. */
.field-start h2,.field-chapter h2{margin-top:0}.field-resources{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.field-resources>div{display:grid;grid-template-columns:28px 1fr;gap:8px;align-items:center}.field-resources p{grid-column:1/-1;margin:0;color:#576b60;font-size:14px;line-height:1.6}.field-start>p{line-height:1.65}.field-picker{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.field-picker button{display:flex;align-items:center;gap:10px;text-align:left}.field-picker b{color:#32805a}.field-picker [aria-pressed=true]{background:#e4efcf;border-color:#50864c;color:#214d38}.field-chapter-head{max-width:800px}.field-chapter-head h2{margin:10px 0}.field-chapter p,.field-scoring p{line-height:1.7}.field-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;align-items:start}.field-visual{min-width:0}.field-visual svg{width:100%;height:auto;display:block;border-radius:12px}.field-caption,.field-model{font-size:12px;color:#65766a}.field-instructions h3{margin:0 0 12px}.field-instructions ol{padding-left:23px;line-height:1.7}.field-instructions li{padding-left:5px;margin-bottom:8px}.field-instructions small{display:block;margin:10px 0;color:#65766a}.field-notes{display:grid;grid-template-columns:1fr 1fr;gap:28px;border-top:1px solid #dce5d7;margin-top:24px}.field-notes h3{font-size:16px}.field-notes p{font-size:14px}.field-question summary{color:#356947}.field-scoring caption{text-align:left;font-weight:bold;padding:12px}.field-model{margin-bottom:0}
@media(max-width:1000px){.field-picker{grid-template-columns:repeat(2,minmax(0,1fr))}.field-grid{grid-template-columns:1fr}.field-visual{width:100%;max-width:560px;margin:auto}}
@media(max-width:760px){.field-resources,.field-notes{grid-template-columns:1fr;gap:16px}.field-picker button{padding:11px 8px;font-size:12px}.field-chapter{padding:18px}.field-notes{gap:0}.field-picker b{font-size:11px}}

#audio-settings #motion{width:18px;height:18px;max-width:none;padding:0;border:0;flex:0 0 18px;accent-color:#387b50}
#audio-settings label:has(input[type=checkbox]){display:flex;align-items:center;gap:9px;min-height:30px;cursor:pointer}
#audio-settings input[type=checkbox]{width:18px;height:18px;accent-color:#387b50;flex:0 0 18px}
.home-icon{display:inline-flex;align-items:center;justify-content:center;flex:0 0 38px;width:38px;height:38px;border-radius:11px;color:#286d47;background:#e5f0dc}
.home-icon svg{width:25px;height:25px;display:block}
.home-icon-1,.home-icon-3,.home-icon-6{color:#307d98;background:#e3f1f5}
.home-icon-4,.home-icon-8{color:#9b691c;background:#fbefd1}
.home-icon-5,.home-icon-7{color:#72569b;background:#eee7f5}
.mission-card-heading{display:flex;align-items:center;gap:11px;min-width:0}.mission-card-heading>div{min-width:0}.mission-card-heading h3{margin:5px 0 0}.welcome-steps>div{display:grid;grid-template-columns:38px minmax(0,1fr);column-gap:12px;row-gap:8px;align-content:start}.welcome-steps .home-icon{display:flex;grid-column:1;grid-row:1;margin:0}.welcome-steps b{grid-column:2;grid-row:1;align-self:center;line-height:1.35}.welcome-steps p{grid-column:2;grid-row:2;margin:0;line-height:1.6}
@media(max-width:760px){.mission-card-heading{gap:8px}.mission-card-heading .home-icon{width:30px;height:30px;flex-basis:30px;border-radius:8px}.mission-card-heading .home-icon svg{width:21px;height:21px}}

/* Shared reading sizes; compact game layouts retain their spatial constraints. */
:root{--text-reading:14px;--text-caption:12px}
h1{font-size:clamp(25px,2.3vw,30px);line-height:1.2}
h2{line-height:1.3}h3{line-height:1.35}
.hero h2{font-size:clamp(28px,2.8vw,36px);line-height:1.16;letter-spacing:-1px}
.hero p,.topline p,.welcome-steps p,.card-body p,.info-strip{font-size:var(--text-reading);line-height:1.6}
.hero small{font-size:var(--text-caption);line-height:1.6}
.card h3{font-size:17px;line-height:1.35}
.card .tag,.card-number,.card-bottom,.training-card-note{font-size:var(--text-caption);line-height:1.5}
.card button[data-practice]{font-size:13px;line-height:1.4}
.card-body{display:flex;flex-direction:column}.card-body p{min-height:0}.card-bottom{margin-top:auto}
.welcome-steps b{font-size:15px}
.lesson-goal{font-size:18px;line-height:1.5}
.lesson-steps,.briefing:has(.sort-picker) .lesson-steps{font-size:15px;line-height:1.6}
.lesson-hint,.mission-task,.feedback,details p{font-size:var(--text-reading);line-height:1.6}
.demo-note,.demo-mode,.demo-mode select,.demo-gesture,.lesson-start span,.sort-picker small,.practice-notice span,.field-caption,.field-model,#audio-settings small{font-size:var(--text-caption);line-height:1.5}
.field-instructions small{font-size:var(--text-caption);line-height:1.5}
.field-chapter p,.field-scoring p{font-size:15px;line-height:1.65}
.field-chapter .field-caption,.field-chapter .field-model{font-size:var(--text-caption)}
#audio-settings{font-size:14px}#audio-settings .volume-control{font-size:13px}
@media(max-width:760px){.card h3{font-size:16px}.section-head h2{font-size:20px}.hero h2{font-size:28px}.lesson-goal{font-size:17px}.mission-task{font-size:13px}.field-chapter p,.field-scoring p{font-size:14px}}
@media(min-width:761px) and (max-height:650px){.variant-panel .mission-task{font-size:12px;line-height:1.4}.variant-panel .feedback{font-size:13px;line-height:1.4}}
.pause-panel .lesson-grid{margin-top:20px}.pause-panel .lesson-grid>div{min-width:0}.pause-panel .lesson-demo{width:100%;height:auto}.pause-panel .actions{margin-top:18px}

/* Highlight the destination, irrespective of whether the chosen material is correct. */
.sorting-layout .bin{--bin-accent:#477d9c;--bin-tint:#e5f1f8;transition:background-color .15s,border-color .15s,box-shadow .15s}
.sorting-layout .bin[data-bin="paper"]{--bin-accent:#aa7b30;--bin-tint:#fbf0d9}
.sorting-layout .bin[data-bin="foam"]{--bin-accent:#7964a0;--bin-tint:#eee8f7}
.sorting-layout .bin[data-bin="trash"]{--bin-accent:#7e7465;--bin-tint:#eeeae3}
.sorting-layout .bin.drop-target,.sorting-layout .bin:focus-visible,.sorting-layout .bin:active{background:var(--bin-tint);border-color:var(--bin-accent);border-style:solid;box-shadow:inset 0 0 0 2px var(--bin-accent),0 3px 10px #173d3618}
@media(hover:hover){#app:not(.sorting-drag) .sorting-layout .bin:hover{background:var(--bin-tint);border-color:var(--bin-accent);border-style:solid;box-shadow:inset 0 0 0 2px var(--bin-accent),0 3px 10px #173d3618}}

.preference-check{display:flex;align-items:flex-start;gap:10px;margin:16px 0 8px;font-size:14px;line-height:1.5;cursor:pointer}
.preference-check input[type="checkbox"]{width:18px;height:18px;flex:0 0 18px;margin:2px 0 0;accent-color:#297b57}
.preference-note{display:block;color:#607368;font-size:12px;line-height:1.5;margin:0 0 16px}
.tour-card{max-height:calc(100dvh - 24px);overflow-y:auto}

.expedition-return{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:20px 44px 0;padding:18px 22px;background:#eaf3df;border:1px solid #aec996;border-radius:12px}
.expedition-return[hidden]{display:none}.expedition-return strong{font-size:16px}.expedition-return p{margin:6px 0 0;font-size:14px;line-height:1.5}.expedition-return .primary{flex-shrink:0;text-align:center}
#expedition-results-link{color:#276846;background:#eaf3df;font-weight:700}
@media(max-width:760px){.expedition-return{margin:16px 16px 0;padding:16px;align-items:stretch;flex-direction:column;gap:12px}}
@media print{.expedition-return{display:none}}

.mistake-indicator{border:2px solid #879b79;border-radius:10px;padding:8px 12px;background:#f0f5e9;color:#344d2e;min-width:240px}
.mistake-heading{display:flex;align-items:center;justify-content:space-between;gap:14px}.mistake-heading strong{font-size:16px}
.mistake-indicator small{display:block;font-size:12px;line-height:1.4;margin-top:4px}
.mistake-marks{display:flex;gap:5px}.mistake-marks>span{display:grid;place-items:center;width:23px;height:23px;border:1px solid currentColor;border-radius:50%;font-size:18px;line-height:1}
.mistake-marks .used{background:currentColor}.mistake-marks .used{background:#ac4638;color:#fff;border-color:#ac4638}
.mistake-warning{background:#fff3dc;border-color:#b5822c;color:#715015}
.mistake-danger{background:#fff0eb;border-color:#bd4b3a;color:#8c3025}
@media(max-width:760px){.mistake-indicator{order:-1;flex:1 0 100%;min-width:0;padding:7px 10px}.mistake-heading strong{font-size:15px}}