@font-face{font-family:Lexend;src:url('assets/LexendDeca-Regular.ttf')}@font-face{font-family:Lexend;src:url('assets/LexendDeca-Bold.ttf');font-weight:700}*{box-sizing:border-box}body{margin:0;background:#f6f8f5;color:#16372d;font-family:Lexend,Arial,sans-serif;line-height:1.5}.mast{background:#e7f1e9;padding:1.2rem max(1rem,calc((100vw - 1050px)/2));border-bottom:5px solid #315c43}.brand{font-size:.9rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.mast h1{margin:.25rem 0;font-size:2.1rem}.mast p{margin:.2rem 0}main{max-width:1050px;margin:auto;padding:1.2rem}nav{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1.2rem}.tab,button,.chip{font:inherit}button{cursor:pointer;border:2px solid #315c43;border-radius:10px;background:white;color:#16372d;padding:.65rem .95rem;font-weight:700}button:hover{background:#e3f1e9}button:focus-visible,input:focus-visible{outline:4px solid #d58527;outline-offset:2px}button:disabled{opacity:.45;cursor:not-allowed}.tab.active,.primary{background:#215b45;color:white}.tab.active:hover,.primary:hover{background:#164633}.card{background:white;border:2px solid #aec2b6;border-radius:17px;padding:1.2rem;margin:1rem 0}.card h2{margin-top:0}.orange{border-left:9px solid #d4812a}.blue{border-left:9px solid #286493}.row{display:flex;gap:1rem;flex-wrap:wrap;align-items:center}.stack{display:grid;gap:.8rem}.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1rem}.choice{display:flex;flex-wrap:wrap;gap:.65rem;margin:.75rem 0}.choice button{min-width:5rem}.choice button.selected{background:#ddedfa;border-color:#1d5882}.feedback{padding:.75rem;margin:.8rem 0;border-radius:9px;background:#eff5f0}.feedback.error{background:#fff0e7;color:#7e3715}.feedback.good{background:#e5f4eb;color:#174b30}.drop{min-height:90px;min-width:175px;border:3px dashed #648c75;border-radius:12px;padding:.6rem;background:#f7faf8;text-align:center}.drop.filled{border-style:solid;background:#e6f3ec}.chip{min-width:3.7rem;font-size:1.5rem;display:inline-block;background:#e4edf8;border-color:#286493}.chip.h{background:#f8e6ef;border-color:#9c5b80}.chip.selected{box-shadow:0 0 0 4px #e2a637}.cow{max-width:170px;max-height:170px;object-fit:contain;border-radius:12px}.die{font-size:3.2rem;line-height:1.1;min-width:85px;text-align:center;background:white;border:3px solid #396b52;border-radius:14px;padding:.5rem}.small{font-size:.92rem}.muted{color:#456052}.metric{background:#f1f7f3;border-radius:12px;padding:1rem;flex:1;min-width:140px}.metric strong{display:block;font-size:1.6rem}table{width:100%;border-collapse:collapse;background:white}th,td{border-bottom:1px solid #c5d3c9;text-align:left;padding:.55rem}th{background:#e7f1e9}tr:nth-child(even) td{background:#f9fbf9}.table-wrap{overflow:auto}.bar{height:32px;background:#e4e9e5;border-radius:7px;margin:.5rem 0;overflow:hidden}.fill{height:100%;background:#376b51}.fill.light{background:#d59c56}.alert{background:#fff2d8;border-left:7px solid #cb8024;padding:.8rem;border-radius:8px}.footer{display:flex;gap:.6rem;flex-wrap:wrap;margin:1.5rem 0}.step{font-weight:700;color:#255542}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:600px){.mast{padding:1rem}.mast h1{font-size:1.7rem}main{padding:.7rem}.card{padding:.8rem}}@media print{.mast,nav,.footer,button{display:none!important}main{max-width:none}.card{break-inside:avoid}}
/* Page 1 reading accessibility and high-contrast theme */
body{background:#fff;color:#111}.mast{background:#fff;color:#111;border-bottom-color:#111}.card{background:#fff;color:#111;border-color:#555}.card.orange,.card.blue{border-left-color:#111}.reading-panel{border:2px solid #333}.reading-panel h3{font-size:1.55rem}.reading-list{display:grid;gap:1rem}.sentence-row{padding:1rem;border:2px solid #555;border-radius:14px;background:#fff;color:#111}.sentence-text{font-size:1.5rem;line-height:1.75;margin:0 0 .8rem;max-width:none}.sentence-tools{display:flex;flex-wrap:wrap;gap:.55rem}.sentence-tools button{font-size:1rem;background:#fff;color:#111;border:2px solid #222}.sentence-row:has([aria-pressed="true"]){border-width:4px;border-color:#111;box-shadow:0 0 0 4px #ddd}.reading-list:has([data-focus][aria-pressed="true"]) .sentence-row:not(:has([data-focus][aria-pressed="true"])){opacity:.38}.break-panel{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.9rem;padding:.9rem;border:2px solid #222;border-radius:40px;background:#fff}.break-panel span{padding:.35rem .8rem;border-right:2px solid #999;font-size:1.25rem}.break-panel span:last-child{border:0}.vocab-buttons{display:flex;flex-wrap:wrap;gap:.55rem}.vocab-buttons button{background:#fff;color:#111;border-color:#333}.vocab-buttons button.selected{background:#111;color:#fff}.vocab-definition{margin-top:1rem;border:2px solid #222;border-radius:12px;padding:1rem;font-size:1.18rem;background:#fff}.vocab-definition p{margin:.35rem 0}.alert,.metric,.feedback,.feedback.good,.feedback.error,.drop,.drop.filled,th,tr:nth-child(even) td{background:#fff;color:#111}.alert{border-color:#111}.muted,.step{color:#111}button{color:#111;border-color:#333}.tab.active,.primary{background:#111;color:#fff;border-color:#111}.tab.active:hover,.primary:hover{background:#333}.bar{background:#eee}.fill{background:#111}.fill.light{background:#777}@media(max-width:600px){.sentence-text{font-size:1.35rem}.break-panel{border-radius:20px}.break-panel span{font-size:1.05rem}}
/* Contextual reading controls */
.sentence-row{cursor:text}.sentence-row.open{border:3px solid #111}.sentence-text{user-select:text}.sentence-tools{margin-top:.8rem;padding:.7rem;border:2px solid #222;border-radius:14px;background:#fff;align-items:center}.sentence-tools .tool-label{font-weight:700}.sentence-tools button{font-size:.94rem}.color-tool.yellow{border-bottom:8px solid #f5d34b}.color-tool.green{border-bottom:8px solid #a5dfa4}.color-tool.orange{border-bottom:8px solid #efb36e}.marked.yellow{background:#f5e76d;color:#111}.marked.green{background:#b6edaf;color:#111}.marked.orange{background:#ffd09b;color:#111}.vocab-inline{display:inline;padding:0 .08em;margin:0;border:0;border-bottom:2px solid #205b91;border-radius:0;background:none;color:#205b91;font:inherit;font-weight:700;line-height:inherit;vertical-align:baseline}.vocab-inline:hover,.vocab-inline:focus-visible{background:#e5f1fc;color:#12406c}.vocab-inline .marked{color:#12406c}.vocab-definition{border:3px solid #205b91;border-left-width:9px;background:#fff;color:#111}.vocab-definition strong{font-size:1.35rem;color:#205b91}.vocab-definition button{margin-left:1rem}.break-panel{display:block;border:3px solid #111;border-radius:30px;background:#fff;padding:1.1rem}.break-panel>strong{display:block;margin-bottom:.7rem}.break-part{display:flex;align-items:center;gap:1rem;border-top:1px solid #888;padding:.7rem 0;font-size:1.28rem;line-height:1.6}.break-part .part-number{flex:none;display:grid;place-items:center;background:#111;color:#fff;width:2.1rem;height:2.1rem;border-radius:50%;font-size:1rem}.break-part button{margin-left:auto;flex:none;border-radius:50%;padding:.35rem}.reading-list:has([data-focus][aria-pressed="true"]) .sentence-row:not(:has([data-focus][aria-pressed="true"])){opacity:.36}
/* Visible clickable digital dice */
.die-button{display:flex;flex-direction:column;align-items:center;gap:.65rem;width:100%;max-width:260px;padding:1rem;border:3px solid #111;background:#fff;color:#111}.die-button svg,.die-result svg{width:110px;height:110px}.die-button:hover svg{transform:rotate(-12deg);transition:transform .2s}.die-result{display:flex;align-items:center;gap:1rem}.die-result svg{animation:land .45s ease-out}.die-result strong{font-size:1.45rem}@keyframes land{from{transform:rotate(-45deg) scale(.75)}to{transform:rotate(0) scale(1)}}@media(prefers-reduced-motion:reduce){.die-result svg{animation:none}.die-button:hover svg{transform:none}}

/* Orange highlight also has a pattern so color is not the only cue. */
.marked.orange,.vocab-inline .marked.orange{text-decoration:underline wavy #111;text-decoration-thickness:2px;text-underline-offset:3px}
/* Color-blind-friendly highlight palette; selected text only. */
.color-tool.yellow{border-bottom:8px solid #ffe58f}.color-tool.blue{border-bottom:8px solid #bde7f0}.color-tool.lavender{border-bottom:8px solid #dccbf4}.marked.yellow{background:#ffe58f;color:#111}.marked.blue{background:#bde7f0;color:#111;text-decoration:underline solid #111;text-underline-offset:3px}.marked.lavender{background:#dccbf4;color:#111;text-decoration:underline double #111;text-underline-offset:3px}.vocab-inline .marked{color:#12406c}.selection-notice{font-size:1rem;margin:.5rem 0 0;padding:.55rem;border-left:4px solid #111;background:#fff;color:#111}
.color-choice{margin-top:1.5rem}.color-choice h2{font-size:1.65rem}.color-option{display:inline-flex;align-items:center;gap:.7rem;min-width:165px;justify-content:flex-start}.color-option .swatch{width:2rem;height:2rem;border:2px solid #111;border-radius:5px}.color-option.yellow .swatch{background:#ffe58f}.color-option.blue .swatch{background:#bde7f0}.color-option.lavender .swatch{background:#dccbf4}.chosen-color{font-size:.95rem;margin:.1rem 0 1rem}.sentence-tools .color-tool.yellow{border-bottom:8px solid #ffe58f}.sentence-tools .color-tool.blue{border-bottom:8px solid #bde7f0}.sentence-tools .color-tool.lavender{border-bottom:8px solid #dccbf4}
.mast-brand{display:flex;align-items:center;gap:1.25rem}.mast-brand img{width:90px;height:80px;object-fit:contain;flex:none}.mast-brand .brand{font-size:1.4rem;letter-spacing:0;text-transform:none}.sign-on{max-width:690px;margin:1.5rem auto}.sign-on label{display:block;margin:1.2rem 0 .3rem;font-size:1.2rem;font-weight:700}.sign-on input{font:inherit;font-size:1.25rem;padding:.7rem;border:2px solid #222;border-radius:8px;max-width:100%;width:100%;background:#fff;color:#111}.sign-on .footer{margin:1.6rem 0 .3rem}@media(max-width:600px){.mast-brand img{width:65px;height:60px}.mast-brand .brand{font-size:1.1rem}}
/* Reading Companion style opening page */
.sign-on-mode .mast{display:none}.sign-on-mode main{max-width:none;min-height:100vh;display:grid;place-items:center;padding:1rem;background:#fff}.sign-on-screen{width:min(930px,96vw);border:5px solid #315c43;border-radius:28px;padding:2.2rem clamp(1.1rem,5vw,4rem);background:#fff;color:#111;text-align:center}.sign-on-logo{display:block;width:min(285px,50vw);height:auto;margin:0 auto .8rem}.sign-on-screen h1{margin:.1rem 0;font-size:clamp(1.7rem,3.3vw,3rem);line-height:1.15}.sign-on-title{font-size:clamp(1.3rem,2.5vw,2rem);font-weight:700;margin:.75rem 0 1.5rem}.sign-on-fields{max-width:650px;margin:auto;text-align:left}.sign-on-fields label{display:block;margin:1rem 0 .3rem;font-weight:700;font-size:1.15rem}.sign-on-fields input{width:100%;padding:.75rem;border:2px solid #333;border-radius:10px;background:#fff;color:#111;font:inherit;font-size:1.2rem}.sign-on-actions{display:grid;gap:.8rem;max-width:650px;margin:1.7rem auto .2rem}.sign-on-actions button{min-height:65px;font-size:1.18rem}.erase-toolbar{display:flex;flex-wrap:wrap;gap:.65rem;align-items:center;margin:.5rem 0 1rem;padding:.65rem;border:2px solid #333;border-radius:12px;background:#fff}.erase-toolbar span{font-size:.92rem}.confirm-backdrop{position:fixed;inset:0;z-index:1000;background:rgba(0,0,0,.55);display:grid;place-items:center;padding:1rem}.confirm-box{max-width:590px;width:100%;background:#fff;color:#111;border:4px solid #111;border-radius:17px;padding:1.3rem 1.6rem}.confirm-box h2{margin-top:0}.confirm-box .footer{margin-bottom:0}@media(max-width:600px){.sign-on-screen{padding:1.1rem}.sign-on-logo{width:160px}.sign-on-actions button{min-height:55px}}
.vocab-inline{cursor:pointer;user-select:text}.erase-toolbar button.active{background:#111;color:#fff}.marked{cursor:inherit}.erase-toolbar:has(button.active)~* .marked{cursor:pointer}

.digital-dice-demo{margin:1.3rem 0;text-align:center}.digital-dice-demo .die-button{margin:.8rem auto;max-width:240px;cursor:pointer}.digital-dice-demo .die-button svg{width:170px;height:170px}.die-instruction{font-weight:700}.die-button svg{width:145px;height:145px}

/* Sentence-by-sentence instructions and persistent dice key. */
.instruction-lines{display:grid;gap:.45rem;margin:1rem 0}.instruction-lines p{font-size:1.28rem;line-height:1.6;margin:0}.dice-key{border:3px solid #111;border-radius:16px;background:#fff;padding:1rem;margin:1.2rem 0;max-width:660px}.dice-key h3{margin:0 0 .75rem;font-size:1.5rem}.dice-key-pairs{display:grid;gap:.65rem}.dice-key-pair{display:grid;grid-template-columns:minmax(6rem,1fr) 2rem 3rem;align-items:center;gap:.8rem;border:2px solid #333;border-radius:10px;padding:.55rem .9rem;font-size:1.65rem;font-weight:700}.dice-numbers{white-space:nowrap}.dice-arrow{text-align:center}.dice-allele{font-size:2rem;color:#205b91}@media(max-width:600px){.instruction-lines p{font-size:1.14rem}.dice-key-pair{font-size:1.3rem;gap:.35rem}.dice-allele{font-size:1.65rem}}

/* Accessible reading scale for activity pages 2 and 5 only. */
.page-two,.page-five{font-size:1.5rem;line-height:1.65}.page-two .instruction-lines p,.page-five .instruction-lines p{font-size:1em;line-height:1.65}.page-two .small{font-size:1em}.page-two button,.page-five button{font-size:1em}.page-two .chip{font-size:1.6em}.page-two .drop{font-size:1em}.page-two h2,.page-five h2{color:#111;font-size:1.45em}.page-two h3,.page-five h3{color:#315c43;font-size:1.13em}.page-five h4{color:#315c43;margin:0 0 .7rem;font-size:1.1em}.activity-section,.result-box{border:2px solid #555;border-radius:16px;padding:1rem 1.2rem;margin:1.2rem 0;background:#fff}.activity-section>h3{margin:.1rem 0 .7rem}.page-five .result-box{margin:0}.page-five .metric{border:2px solid #555;min-width:160px}.allele-prediction{border:3px solid #315c43;border-radius:16px;padding:1rem;margin:1rem 0;background:#fff}.prediction-grid,.prediction-coats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.7rem}.prediction-coats{grid-template-columns:repeat(2,minmax(0,1fr));margin-top:.8rem}.prediction-grid>div,.prediction-coats>div{border:2px solid #333;border-radius:12px;text-align:center;padding:.65rem .35rem}.allele-prediction strong,.allele-prediction span{display:block}.allele-prediction span{font-size:1.25em;font-weight:700;color:#315c43}.page-five .choice button{font-size:.82em;text-align:left}@media(max-width:600px){.page-two,.page-five{font-size:1.25rem}.prediction-grid,.prediction-coats{gap:.3rem}.prediction-grid>div,.prediction-coats>div{padding:.4rem .1rem}.activity-section{padding:.75rem}}

/* Plain sentence lines and reading companion style tools. */
.reading-panel{padding:0;margin:1.5rem 0;background:#fff}.reading-panel h3{color:#315c43;margin:.2rem 0 .8rem}.reading-list{gap:0}.reading-panel .sentence-row,.reading-panel .sentence-row.open{border:0;border-radius:0;box-shadow:none;background:none;padding:.32rem 0;margin:0}.reading-panel .sentence-text{margin:0;line-height:1.8}.reading-panel .sentence-row.open .sentence-text{border-left:4px solid #315c43;padding-left:.65rem}.reading-side-panel{position:fixed;z-index:50;right:0;top:0;bottom:0;width:33.333vw;min-width:320px;overflow-y:auto;background:#fff;border-left:4px solid #315c43;box-shadow:-8px 0 22px #0002;padding:1.5rem 1.2rem 2rem}.reading-side-panel h3{color:#315c43;padding-right:3rem;margin:0 0 1rem}.reading-side-panel>p{font-size:1.2rem;line-height:1.7}.reading-side-panel .panel-close{position:absolute;top:.7rem;right:.8rem;font-size:2rem;line-height:1;min-width:2.6rem;min-height:2.6rem;padding:0}.reading-side-panel .sentence-tools{border:0;padding:.2rem 0;display:flex}.reading-side-panel .vocab-definition{border:0;padding:0}.page-two .activity-section,.page-five .activity-section{border:0;border-radius:0;padding:0;margin:1.4rem 0}.page-two .instruction-lines,.page-five .instruction-lines{gap:.2rem}@media(max-width:700px){.reading-side-panel{width:100%;min-width:0;top:auto;bottom:0;max-height:55vh;border-left:0;border-top:4px solid #315c43;box-shadow:0 -8px 20px #0003}}@media print{.reading-side-panel{display:none}}

.reading-panel:has([data-focus][aria-pressed="true"]) .sentence-row:not(.open){opacity:.36}

/* Focus follows the currently selected sentence even though its controls sit in the side panel. */
.reading-panel.focus-active .sentence-row:not(.open){opacity:.28}.reading-panel.focus-active .sentence-row.open .sentence-text{border-left-width:7px;font-weight:700}.reading-side-panel [data-focus][aria-pressed="true"]{background:#315c43;color:#fff}

/* Coat-color mapping and screenshot completion page. */
.coat-key{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin:1rem 0}.coat-key>div{border:3px solid #315c43;border-radius:16px;text-align:center;padding:1rem;background:#fff}.coat-key strong,.coat-key span{display:block}.coat-key strong{font-size:1.35em;color:#111}.coat-key span{font-size:1.05em;font-weight:700;color:#315c43}.completion-screen{max-width:830px;margin:1.2rem auto 3rem;border:5px solid #315c43;border-radius:24px;padding:2.5rem;background:#fff;color:#111;text-align:center}.completion-screen>img{display:block;width:200px;max-width:45%;height:auto;margin:0 auto 1rem}.completion-screen h1{margin:.2rem 0;color:#111;font-size:2.3rem}.completion-product{font-size:1.35rem}.completion-screen h2{margin:1.7rem 0;color:#315c43;font-size:2rem}.completion-details{max-width:600px;margin:2rem auto;text-align:left}.completion-details p{display:flex;justify-content:space-between;gap:1rem;border-bottom:2px solid #999;padding:.7rem .3rem;font-size:1.2rem}.completion-help{font-size:1.1rem}@media(max-width:600px){.coat-key{gap:.5rem}.coat-key>div{padding:.6rem}.completion-screen{padding:1.2rem}.completion-details p{font-size:1rem}}@media print{.completion-screen{break-inside:avoid}}

/* Certificate fits in one screenshot without activity navigation. */
.completion-screen{margin:1rem auto;padding:1.3rem 2rem}.completion-screen>img{width:135px;margin-bottom:.35rem}.completion-screen h1{font-size:1.9rem}.completion-screen h2{margin:1rem 0;font-size:1.7rem}.completion-details{margin:1rem auto}.completion-details p{margin:.3rem 0;padding:.45rem .3rem}.completion-help{margin:1rem 0 0}.completion-actions{max-width:830px;margin:0 auto 1rem}

.certificate-entry{border:3px solid #315c43;border-radius:16px;padding:1rem 1.2rem;margin:1.5rem 0;background:#fff}.certificate-entry h3{color:#315c43;margin:0}.certificate-entry .footer{margin:.8rem 0 0}.certificate-entry .primary{background:#315c43;color:#fff;font-size:1.1em;min-height:3.4rem}