/* Number Lab shares Math Meadow's palette, type, and original character. */
.lab-page .topbar{gap:20px}.lab-page nav{margin-left:auto}.lab-page nav a{white-space:nowrap}.lab-utility{max-width:1178px;margin:auto;padding:15px 36px 0;display:flex;align-items:center;gap:20px;font-size:12px;color:var(--muted)}.lab-utility>span{margin-right:auto}.lab-utility a{text-underline-offset:4px}.lab-utility button{padding:8px 12px;min-height:44px;font-size:12px}.lab-page main{padding-top:30px}.lab-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:25px}.lab-heading h1{font-size:clamp(38px,5vw,58px);margin-bottom:10px}.lab-heading h1 span{color:#7652a6}.lab-heading p:not(.eyebrow){font-size:16px;color:var(--muted);max-width:540px;margin:0}.lab-heading .eyebrow{margin-bottom:12px}.lab-heading .cookie-counter{transform:rotate(2deg)}.lab-controls{display:flex;gap:20px;flex-wrap:wrap;align-items:end;margin:0 0 24px}.lab-levels{border:0;padding:0;margin:0;min-width:0}.lab-levels legend,.lab-skill label{font-weight:bold;font-size:12px;margin-bottom:8px}.lab-levels>div{display:flex;gap:6px;flex-wrap:wrap}.lab-levels button{padding:10px 14px;border:1px solid #a8b89e;border-radius:23px;background:var(--white);font-size:13px;min-height:44px;font-weight:bold}.lab-levels button[aria-pressed=true]{background:var(--forest);border-color:var(--forest);color:white;box-shadow:0 3px 0 #0f453d}.lab-skill{display:grid;gap:0;max-width:100%;flex:1 1 210px}.lab-skill select{width:100%;min-height:44px}.lab-count{font-size:12px;color:var(--muted);margin:0 0 16px}.lab-layout{display:grid;grid-template-columns:minmax(0,1.85fr) minmax(240px,1fr);gap:24px;align-items:start}.lab-activity{min-width:0;outline:none}.lab-activity h2{font-size:29px;line-height:1.18;margin-bottom:17px}.lab-kicker{display:flex;gap:12px;justify-content:space-between;align-items:center;font-size:11px;font-weight:bold;color:var(--muted);margin-bottom:14px}.lab-kicker .lab-level-tag{background:#eee5ff;border-radius:20px;padding:5px 10px;color:#67468c;white-space:nowrap}.lab-context{font-size:16px;color:var(--muted);line-height:1.6;margin-bottom:12px}.lab-prompt{font-size:21px;line-height:1.45;letter-spacing:-.2px;font-weight:bold;white-space:pre-line}.lab-model{margin:23px 0;padding:20px 15px;background:#f4f1e6;border:1px solid #d8dbc9;border-radius:16px;overflow:auto}.lab-model figcaption{font-size:12px;color:var(--muted);text-align:center;margin-top:14px;max-width:100%;line-height:1.55}.lab-equation{font-size:clamp(22px,4vw,36px);font-weight:800;text-align:center;line-height:1.6;overflow-wrap:anywhere;white-space:pre-line}.lab-blocks{display:flex;justify-content:center;gap:14px;align-items:stretch;flex-wrap:wrap}.lab-place{min-width:80px;flex:1 1 80px;padding:10px;border:1px solid #d3d6c6;border-radius:12px;background:#fffdf6;text-align:center}.lab-place strong{font-size:12px;display:block;margin-bottom:12px}.lab-place-items{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:center;gap:6px;min-height:58px}.lab-big-block{border:2px solid #7f69a4;background:#e8dcff;border-radius:7px;padding:5px;font-size:11px;font-weight:bold;min-width:55px;min-height:50px;display:grid;place-items:center}.lab-zero{font-size:12px;color:var(--muted);align-self:center}.lab-fractions{display:grid;gap:12px;justify-items:center}.lab-whole{width:100%;max-width:360px;min-width:0}.lab-whole-label{font-size:10px;color:var(--muted);display:block;margin-bottom:4px}.lab-fraction-parts{display:grid;grid-template-columns:repeat(var(--parts),minmax(0,1fr));border:2px solid #68548e;background:#fffdf7;min-height:43px}.lab-fraction-parts i{display:block;min-height:38px;border-right:1px solid #b6a8ce}.lab-fraction-parts i:last-child{border-right:0}.lab-fraction-parts i.filled{background:#9775cd;box-shadow:inset 0 0 0 2px #b69cde}.lab-fraction-parts.many-parts{aspect-ratio:1;max-width:200px;min-height:0}.lab-fraction-parts.many-parts i{min-height:0;border-bottom:1px solid #b6a8ce}.lab-decimals{display:flex;gap:18px;flex-wrap:wrap;justify-content:center}.lab-decimal-whole{flex:0 1 200px;width:200px;max-width:100%}.lab-decimal-grid{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));aspect-ratio:1;border:2px solid #416e5e;background:#fffef8}.lab-decimal-grid i{border-right:1px solid #afc8b3;border-bottom:1px solid #afc8b3;display:block}.lab-decimal-grid i.filled{background:#77ad87;box-shadow:inset 0 0 0 1px #b4d4ad}.lab-number-line{display:block;width:100%;min-width:280px;height:auto;overflow:visible}.lab-number-line text{fill:var(--ink);font:16px 'Trebuchet MS',sans-serif}.lab-number-line .lab-point-label{fill:#624494;font-size:23px;font-weight:bold}.lab-array{display:grid;grid-template-columns:repeat(var(--cols),minmax(8px,20px));gap:5px;justify-content:center;width:max-content;min-width:0;margin:0 auto}.lab-dot{display:block;width:17px;height:17px;border-radius:50%;background:#8b64bd;border:2px solid #68508f}.lab-array .lab-dot{width:100%;height:auto;aspect-ratio:1}.lab-groups{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.lab-group{display:flex;gap:5px;align-content:center;align-items:center;justify-content:center;flex-wrap:wrap;min-height:62px;width:85px;border:2px solid #baa8d9;border-radius:15px;background:#eee5ff;padding:10px}.lab-answer{margin:22px 0 0}.lab-answer label,.lab-answer legend{font-size:14px;font-weight:bold}.lab-answer fieldset{border:0;padding:0;margin:0}.lab-answer legend{margin-bottom:10px}.lab-choices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.lab-choice{position:relative;display:flex;align-items:center;gap:9px;padding:15px 12px;border:2px solid #c4c9b7;border-radius:13px;background:#faf8ef;cursor:pointer;min-height:55px;overflow-wrap:anywhere;line-height:1.4}.lab-choice:has(input:checked){background:#e7ddff;border-color:#7652a6}.lab-choice input{accent-color:#7652a6;width:19px;height:19px;flex-shrink:0;min-height:19px}.lab-answer-input{display:block;background:white;color:var(--ink);border:2px solid #a4b49a;border-radius:12px;padding:12px 14px;width:100%;font-size:24px;min-height:56px;margin-top:8px}.lab-answer-input[aria-invalid=true]{border-color:#9b6426}.lab-input-help{font-size:12px;color:var(--muted);margin:8px 0 16px}.lab-answer-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:17px}.lab-answer-actions .primary{flex:1 1 150px}.lab-answer-actions .secondary{flex:1 1 100px}.lab-feedback{padding:14px 16px;border:1px solid #d4bb7b;border-radius:12px;background:#fff0c6;font-size:15px;margin-top:18px;line-height:1.6}.lab-feedback.correct{background:#e1f0cf;border-color:#a2bd8c}.lab-feedback p{margin:0}.lab-feedback strong{display:block;margin-bottom:4px}.lab-hint{padding:15px;border:1px dashed #b69ccf;border-radius:13px;background:#f1eaff;font-size:14px;margin-top:17px;line-height:1.6}.lab-hint p{margin:5px 0 0}.lab-reveal{margin-top:8px;font-size:13px;min-height:44px}.lab-explanation{padding:20px;background:#ecf2e2;border-radius:14px;margin-top:19px;font-size:15px;line-height:1.65}.lab-explanation h3{font-size:20px;margin-bottom:10px}.lab-explanation p:last-child{margin:0}.lab-reflect{font-size:15px;padding:17px 0 0;line-height:1.6}.lab-reflect .eyebrow{font-size:10px;margin-bottom:8px}.lab-reflect p{margin:0}.lab-reflect small{display:block;font-size:11px;color:var(--muted);margin-top:8px}.lab-nav{margin-top:21px;display:flex;gap:10px;justify-content:space-between}.lab-nav button{flex:1}.lab-jump{margin-top:19px;display:grid;gap:7px;font-size:12px;font-weight:bold}.lab-jump select{width:100%;font-size:13px}.lab-aside{background:#ddedc6}.lab-aside .monster-intro{display:block;text-align:center;margin:0}.lab-aside .monster-stage{width:170px;height:155px;margin:0 auto}.lab-aside .crumb-monster{width:170px;height:155px}.lab-aside .snack-cookie{top:105px}.lab-aside h2{font-size:31px;margin:10px 0 9px}.lab-aside .crumb-aside{font-size:12px!important;margin-bottom:21px!important}.lab-aside>p{font-size:14px;line-height:1.7}.lab-how{padding:0 0 0 21px;margin:0;font-size:14px}.lab-how li{padding-left:3px;margin:12px 0}.lab-how li::marker{color:#5b7748;font-weight:bold}.lab-aside .small-note{font-size:12px;line-height:1.6}.lab-teacher{font-size:12px;color:var(--muted);margin-top:21px;border-top:1px solid #b4c7a2;padding-top:13px}.lab-teacher summary{min-height:44px;padding:12px 0;cursor:pointer;font-weight:bold;color:var(--ink)}.lab-teacher p{margin:10px 0;line-height:1.6}.lab-teacher label{display:block;font-weight:bold;margin:13px 0 6px}.lab-teacher select{width:100%;font-size:12px}.lab-teacher ul{padding-left:18px;overflow-wrap:anywhere}.lab-no-results{padding:35px}.lab-no-results h2{font-size:28px}.lab-privacy-link{padding:10px 0;min-height:44px;font-size:12px}.lab-idle .monster-body{animation:lab-bob 5s ease-in-out infinite}.lab-idle .monster-pupils{animation:lab-look 9s ease-in-out infinite}.feeding .monster-body{animation:happy-crunch .55s ease-in-out .55s 1}.lab-motion-paused .monster-body,.lab-motion-paused .monster-pupils,.lab-motion-paused .monster-mouth,.lab-motion-paused .snack-cookie,.lab-motion-paused .snack-cheer{animation:none!important}.lab-motion-paused .snack-cookie{display:none}.lab-motion-paused .feeding .snack-cheer{opacity:1}@keyframes lab-bob{0%,100%{transform:translateY(0) rotate(-1deg)}50%{transform:translateY(-4px) rotate(1deg)}}@keyframes lab-look{0%,70%,100%{transform:translateX(0)}75%,90%{transform:translateX(2px)}}
@media(max-width:850px){.lab-layout{grid-template-columns:minmax(0,1.65fr) minmax(220px,1fr);gap:18px}.lab-page .topbar{padding:18px 24px}.lab-page nav{gap:3px}.lab-page nav a{padding:10px;font-size:12px}.lab-aside{padding:18px}.lab-aside .monster-stage{width:145px;height:135px}.lab-aside .crumb-monster{width:145px;height:135px}.lab-aside .snack-cookie{top:90px}.lab-utility{padding-left:24px;padding-right:24px;gap:12px}.lab-kicker{font-size:10px}.lab-choices{grid-template-columns:1fr}.lab-prompt{font-size:20px}}
@media(max-width:680px){.lab-page .topbar{flex-wrap:wrap;gap:14px;padding:18px}.lab-page .brand{font-size:22px}.lab-page nav{margin-left:auto}.lab-page nav a{padding:10px 9px;font-size:11px}.lab-page .brand-note{font-size:6px;letter-spacing:1.1px}.lab-page .brand svg{width:32px;height:32px}.lab-utility{padding:13px 18px 0;gap:12px;flex-wrap:wrap}.lab-utility>span{flex:1 1 130px}.lab-utility button{font-size:11px;padding:8px}.lab-page main{padding:27px 18px 45px}.lab-heading{align-items:flex-start;gap:14px}.lab-heading h1{font-size:39px}.lab-heading p:not(.eyebrow){font-size:14px}.lab-heading .eyebrow{font-size:9px}.lab-heading .cookie-counter{padding:10px;font-size:10px;display:block;text-align:center;white-space:normal;min-width:71px}.lab-heading .cookie-counter strong{font-size:24px;display:block;margin-top:4px}.lab-heading .cookie-counter .cookie-icon{width:29px;height:29px}.lab-layout{grid-template-columns:1fr}.lab-controls{gap:15px}.lab-levels button{padding:10px 12px}.lab-skill{flex-basis:100%}.lab-activity{padding:21px 18px}.lab-activity h2{font-size:26px}.lab-model{padding:16px 10px;margin:20px -3px}.lab-prompt{font-size:19px}.lab-aside .monster-intro{display:flex;gap:15px;text-align:left;justify-content:flex-start}.lab-aside .monster-intro>div:last-child{flex:1}.lab-aside .monster-stage{flex:0 0 120px;width:120px;height:115px;margin:0}.lab-aside .crumb-monster{width:120px;height:115px}.lab-aside .snack-cookie{top:75px}.lab-aside h2{font-size:28px}.lab-aside .crumb-aside{text-align:left;margin-bottom:0!important}.lab-how{margin-top:12px}.lab-how li{margin:9px 0}.lab-choices{grid-template-columns:repeat(2,minmax(0,1fr))}.lab-choice{font-size:14px;padding:13px 9px}.lab-page footer{flex-wrap:wrap;padding:20px 18px}.lab-teacher{margin-top:16px}}
@media(max-width:390px){.lab-page .brand-note{display:none}.lab-page nav a{font-size:10px;padding:8px}.lab-page .topbar{gap:8px}.lab-page .brand{font-size:19px}.lab-choices{grid-template-columns:1fr}.lab-heading h1{font-size:34px}.lab-levels button{padding:9px 10px}.lab-aside .monster-intro{gap:8px}.lab-blocks{gap:8px}.lab-place{padding:8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.lab-page *,.lab-page *::before,.lab-page *::after{animation:none!important;transition:none!important}.lab-page .snack-cookie{display:none}.lab-page .feeding .snack-cheer{opacity:1}}
.lab-fraction-comparison{display:grid;gap:24px}.lab-fraction-comparison .lab-whole{max-width:360px;width:100%}.lab-number-line{min-width:340px}.lab-model:has(.lab-number-line){padding-bottom:14px}
.lab-fraction-area{max-width:340px;margin:auto}.lab-area-grid{display:grid;grid-template-columns:repeat(var(--cols),minmax(0,1fr));grid-template-rows:repeat(var(--rows),minmax(0,1fr));aspect-ratio:1;border:2px solid #3b5c53;background:#fffdf6}.lab-area-grid i{display:block;border-right:1px solid #667d73;border-bottom:1px solid #667d73;min-height:0}.area-horizontal{background:#f2d77b;background-image:repeating-linear-gradient(0deg,transparent 0px,transparent 6px,#bb8c3959 6px,#bb8c3959 8px)}.area-vertical{background:#a4d6df;background-image:repeating-linear-gradient(90deg,transparent 0px,transparent 6px,#3d829559 6px,#3d829559 8px)}.area-overlap{background:#ad8cd9;background-image:repeating-linear-gradient(0deg,transparent 0px,transparent 6px,#65449480 6px,#65449480 8px),repeating-linear-gradient(90deg,transparent 0px,transparent 6px,#65449480 6px,#65449480 8px)}.lab-area-key{display:flex;flex-wrap:wrap;gap:9px 16px;font-size:11px;justify-content:center;margin-top:15px}.lab-area-key span{display:flex;align-items:center;gap:6px}.lab-area-key i{display:inline-block;width:20px;height:20px;border:1px solid #667d73}
.lab-number-line text{font-size:24px}.lab-number-line .lab-point-label{font-size:27px}.lab-model:focus-visible{outline:3px solid #9a450e;outline-offset:4px}
.lab-fraction-groups{display:grid;gap:8px;max-width:380px;margin:auto}.lab-fraction-group{padding:12px 14px;border:1px solid #b4a2cb;border-radius:12px;background:#fffdf8}.lab-fraction-group>strong{display:block;font-size:12px;margin-bottom:8px;color:#64478a}.lab-fraction-plus{display:block;text-align:center;font-size:25px;color:#7652a6;line-height:1}.lab-fraction-tiles{max-width:340px;margin:auto}.lab-tile-grid{display:grid;grid-template-columns:repeat(var(--cols),minmax(0,1fr));grid-template-rows:repeat(var(--rows),minmax(0,1fr));aspect-ratio:var(--cols)/var(--rows);border:2px solid #3b6e5a;background:#d2ebc3}.lab-tile-grid i{display:block;aspect-ratio:1;min-height:0;background:#b0d39f;box-shadow:inset 0 0 0 3px #d8edc9;border-right:1px solid #537d46;border-bottom:1px solid #537d46}.lab-tile-unit{font-size:12px;text-align:center;margin:12px 0 0}.lab-fresh{display:flex;align-items:center;gap:15px;flex-wrap:wrap;background:#f0e8ff;border:1px dashed #b49dcf;border-radius:14px;padding:16px;margin-top:22px}.lab-fresh>div{flex:1 1 180px}.lab-fresh strong{font-size:14px}.lab-fresh p{font-size:12px;line-height:1.55;color:var(--muted);margin:6px 0 0}.lab-fresh button{font-size:13px;background:#fffdf8}
.lab-line-key{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;font-size:13px;font-weight:bold}.lab-line-key span{display:flex;align-items:center;gap:6px}.lab-line-key i{display:inline-block;width:12px;height:12px;border-radius:50%}.lab-start-dot{background:#d97839}.lab-end-dot{background:#8961bb}
.lab-tile-grid{border:0;outline:2px solid #3b6e5a;outline-offset:0}

/* Optional worked-model support stays below the explanation, never over the task. */
.lab-explanation-visual{margin-top:20px;border:2px solid #9276bd;border-radius:14px;background:#fffdf8;color:var(--ink)}
.lab-explanation-visual>summary{cursor:pointer;padding:16px 18px;font-weight:750;line-height:1.5;min-height:48px;box-sizing:border-box}
.lab-explanation-visual>summary:focus-visible{outline:3px solid #9a450e;outline-offset:4px;border-radius:10px}
.lab-explanation-visual[open]>summary{border-bottom:1px solid #cfbfdf}
.lab-visual-support{padding:18px;min-width:0}
.lab-visual-support h4{margin:0 0 12px;font-size:18px}
.lab-visual-support .lab-model{background:white;margin:18px 0;max-width:100%;box-sizing:border-box}
.lab-visual-support .lab-model-fact{font-weight:650;line-height:1.65;overflow-wrap:anywhere}
.lab-model-question{background:#f1eaff;border-left:4px solid #8360ad;padding:14px 16px;border-radius:0 10px 10px 0;line-height:1.65}
@media(max-width:680px){.lab-explanation-visual>summary{padding:14px 12px}.lab-visual-support{padding:14px 10px}.lab-model-question{padding:12px}}

/* Literal base-ten geometry: all unit squares share one fixed scale. Only the
   containers wrap; a rod, a five-group, and a hundred can never reflow 9 + 1. */
.lab-model{--lab-unit-size:10px;--lab-ten-size:calc(10 * var(--lab-unit-size))}
.lab-unit{display:block;box-sizing:border-box;width:var(--lab-unit-size);height:var(--lab-unit-size);min-width:var(--lab-unit-size);padding:0;margin:0;border:1px solid #2e6650;border-radius:0;background:#80b491;outline:0;flex:none}
.lab-unit.lab-second-five{background:#ad96d4;border-color:#715591}
.lab-base-rod{display:grid;grid-template-columns:var(--lab-unit-size);grid-template-rows:repeat(10,var(--lab-unit-size));gap:0;width:var(--lab-unit-size);height:var(--lab-ten-size);padding:0;margin:0;border:0;border-radius:0;background:none;flex:none}
.lab-hundred{display:grid;grid-template-columns:repeat(10,var(--lab-unit-size));grid-template-rows:var(--lab-ten-size);gap:0;width:var(--lab-ten-size);height:var(--lab-ten-size);border:0;border-radius:0;background:none;outline:1px solid #3c6358;flex:none}
.lab-place-items{min-height:100px;gap:8px}
.lab-place{min-width:76px}
.lab-hundreds-place:has(.lab-hundred){flex:2 1 220px}
.lab-counter-frame{--counter-size:17px;display:grid;grid-template-columns:repeat(5,var(--counter-size));grid-template-rows:repeat(2,var(--counter-size));gap:5px;width:max-content;flex:none}
.lab-counter-slot{display:grid;place-items:center;width:var(--counter-size);height:var(--counter-size);box-sizing:border-box;border-radius:3px;background:#fffdf8;outline:1px solid #d5d9c9}
.lab-counter-frame .lab-dot{width:var(--counter-size);height:var(--counter-size);box-sizing:border-box;background:#80b491;border-color:#2e6650}
.lab-counter-frame .lab-dot.lab-second-five{background:#ad96d4;border-color:#715591}
.lab-counter-frame.lab-loose-ones{--counter-size:var(--lab-unit-size)}
.lab-group.lab-group-counters{width:auto;min-height:0;padding:12px}
.lab-group.lab-group-rods{display:flex;flex-wrap:nowrap;align-items:flex-start;gap:5px;width:max-content;min-height:0;padding:12px}
.lab-hundred-exchange{display:flex;flex-wrap:wrap;justify-content:center;align-items:flex-start;gap:24px}
.lab-hundred-batch{display:flex;flex-wrap:nowrap;column-gap:5px;row-gap:0;width:max-content;padding:0}
.lab-hundred-batch:not(.is-joined)>.lab-base-rod:nth-child(2n+3){margin-left:10px}
.lab-hundred-batch.is-joined{column-gap:0;outline:1px solid #3c6358}
.lab-base-rod.lab-group.lab-rod-group{display:grid;width:var(--lab-unit-size);min-height:0;height:var(--lab-ten-size);border:0;border-radius:0;padding:0;gap:0;background:none}
.lab-regroup-label{font-size:13px;font-weight:bold;text-align:center;margin:0 0 16px}
.lab-ten-views{margin-top:17px;border-top:1px solid #c5cbb8;padding-top:5px;color:var(--ink)}
.lab-ten-views>summary{cursor:pointer;font-size:13px;font-weight:bold;padding:12px 4px;min-height:44px;box-sizing:border-box}
.lab-ten-views>summary:focus-visible{outline:3px solid #9a450e;outline-offset:2px;border-radius:5px}
.lab-ten-views-body>p{font-size:12px;line-height:1.55;margin:8px 0 15px}
.lab-ten-examples,.lab-coin-examples{display:flex;flex-wrap:wrap;gap:18px 22px;justify-content:center;align-items:flex-start}
.lab-ten-examples>figure,.lab-coin-examples>figure{margin:0;display:grid;justify-items:center;gap:8px;max-width:100%}
.lab-ten-examples figcaption,.lab-coin-examples figcaption{font-size:12px;margin:0;font-weight:bold;color:var(--ink)}
.lab-example-counter{display:block;box-sizing:border-box;width:15px;height:15px;border:1px solid #2e6650;border-radius:50%;background:#80b491}
.lab-example-counter.lab-second-five{background:#ad96d4;border-color:#715591}
.lab-example-frame{display:grid;grid-template-columns:repeat(5,15px);grid-template-rows:repeat(2,15px);gap:4px;padding:5px;border:1px solid #9da994;border-radius:4px;background:#fffdf8}
.lab-example-pairs{display:grid;grid-template-columns:repeat(5,21px);gap:5px}
.lab-example-pairs>span{display:grid;grid-template-rows:repeat(2,15px);gap:4px;padding:3px;background:#fffdf8;border-radius:9px;outline:1px solid #c3cbb9}
.lab-example-rack{display:grid;grid-template-columns:repeat(10,15px);gap:2px;width:max-content;padding:15px 5px;background:linear-gradient(#888a79,#888a79) center/100% 2px no-repeat;border-left:3px solid #6e735f;border-right:3px solid #6e735f}
.lab-money-note{border-top:1px dashed #bcc4b0;padding-top:15px}
.lab-coin-examples>figure>div{display:flex;gap:8px;min-height:43px;align-items:center;justify-content:center}
.lab-example-coin{display:grid;place-items:center;box-sizing:border-box;width:42px;height:42px;border:3px double #6e756f;border-radius:50%;background:#e8e9e1;color:#34443b;font-size:13px;font-weight:bold;box-shadow:inset 0 0 0 2px #fffdf8}
.lab-example-coin.dime{width:35px;height:35px;font-size:11px}

/* Pair boundaries mark 2 + 2 + 2 + 2 + 2 rod-columns without resizing the whole. */
.lab-hundred,.lab-hundred-batch.is-joined{position:relative}
.lab-hundred::after,.lab-hundred-batch.is-joined::after{content:"";position:absolute;inset:0;background:linear-gradient(to right,transparent 19%,#294f47 19% 21%,transparent 21% 39%,#294f47 39% 41%,transparent 41% 59%,#294f47 59% 61%,transparent 61% 79%,#294f47 79% 81%,transparent 81%);pointer-events:none}