:root{--blue:#337994;--clay:#b76937}header{justify-content:space-between}header nav{gap:17px;font-size:15px}main{max-width:1120px}.skip{position:absolute;left:15px;top:-100px;background:white;padding:12px;z-index:10}.skip:focus{top:10px}.hero{margin:35px 0}.hero h1{font-size:clamp(37px,5vw,64px);max-width:820px;margin:15px 0}.hero .lead{max-width:680px}.concept{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:25px 0}.concept article{border-top:3px solid var(--green);padding:12px;background:#fff}.concept h2{font-size:24px;margin:7px 0}.concept p{font-size:15px;margin:8px 0}.lab-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);gap:22px}.lab-grid>*{min-width:0}.controls{display:grid;grid-template-columns:1fr 1fr;gap:15px}.controls input{width:100%}.controls label{font-size:15px}.legend{display:flex;gap:20px;flex-wrap:wrap;font-size:15px;margin:15px 0}.legend span:before{content:'';display:inline-block;width:12px;height:12px;border-radius:3px;margin-right:7px;background:var(--green)}.legend .second:before{background:var(--blue)}.legend .remaining:before{background:#e5dac9}.dig{height:86px;border-radius:8px;border:2px solid #ad9a7d;background:#e5dac9;display:flex;overflow:hidden;background-image:repeating-linear-gradient(0deg,transparent 0 16px,#dac9af 17px 18px)}.dig>span{height:100%;display:block;transition:width .1s linear;background:var(--green)}.dig>.b{background:var(--blue)}.summary-number{font:38px/1.2 Georgia;display:block;margin:12px 0}.fact{background:#eff4ed;border-radius:10px;padding:15px;font-size:17px}.fact p{margin:5px 0}.method-bar{display:flex;flex-wrap:wrap;gap:7px;margin:15px 0}.method-bar button[aria-pressed=true]{background:var(--green);color:#fff}.select-row{display:flex;gap:12px;align-items:end;flex-wrap:wrap;margin:20px 0}.select-row label{flex:1;min-width:210px}.select-row select{width:100%}.step-heading{font-size:14px;color:var(--green);text-transform:uppercase;letter-spacing:.06em}.question{font-size:21px}.step-history{padding-left:24px;font-size:16px}.step-history li{padding-bottom:10px;border-bottom:1px solid var(--line)}.reason{font-size:15px;font-weight:normal}.answer-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.answer-row input{width:160px}button:disabled{opacity:.55;cursor:default}.methods-note{font-size:14px;color:#627362}.choices{display:flex;gap:8px;flex-wrap:wrap}.score{font:40px Georgia}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.metrics p{font-size:14px}.muted a{color:inherit}.no-motion *{transition:none!important;animation:none!important}@media(max-width:760px){.lab-grid,.concept{grid-template-columns:1fr}.hero{margin:22px 0}.concept{gap:8px}.concept article{padding:9px 14px}.concept article p{margin:4px 0}.hero .lead{font-size:20px}header nav{gap:10px}.metrics{gap:8px}.metrics .panel{padding:12px}.metrics .score{font-size:30px}.controls{gap:12px}.legend{gap:12px;font-size:13px}.question{font-size:19px}.select-row select{font-size:16px}.answer-row input{width:135px}.task{font-size:20px}.lab-grid .panel{padding:17px}}
@media(max-width:500px){.metrics{grid-template-columns:1fr}.metrics .panel{display:flex;gap:16px;align-items:center}.metrics .score{min-width:40px}.metrics p{margin:0}}

.dig{position:relative;height:150px;background:#ded7b8;border:3px solid #86916b}.dig.divided:after{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(to right,transparent calc(100% - 2px),#f8f4db 0),linear-gradient(to bottom,transparent calc(50% - 1px),#f8f4db calc(50% - 1px),#f8f4db calc(50% + 1px),transparent calc(50% + 1px));background-size:calc(100% / var(--plot-cols)) 100%,100% 100%}.dig>.a{background:#627849}.dig>.b{background:#337994}