:root{--paper:#f7f6ee;--white:#fffef9;--ink:#213e35;--muted:#627067;--line:#d9ddcf;--green:#234d3d;--lime:#e4ed9a;--sage:#e7ecdd;--orange:#cf6c46;--peach:#f6dfcd;--blue:#dceaf1;--purple:#e5e0ef;--shadow:0 14px 35px #263c2d09;--sans:'Avenir Next','Trebuchet MS',Arial,sans-serif;--serif:Georgia,'Times New Roman',serif}
*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--sans);font-size:15px;line-height:1.6}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.45}a{color:inherit;text-decoration:none}button{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--orange);outline-offset:4px}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.12}h1{font-size:56px;font-weight:500;letter-spacing:-2.5px;font-family:var(--serif)}h2{font-size:30px;font-family:var(--serif);font-weight:500;letter-spacing:-.6px}h3{font-size:19px}small{font-size:12px}svg{display:block;max-width:100%}button{border:0;background:none}input,select,textarea{color:var(--ink);background:var(--white);border:1px solid var(--line);border-radius:9px;padding:10px 12px;max-width:100%}input[type=range]{padding:0;border:0;accent-color:var(--green);width:100%;height:30px;background:none}label{display:block}input[type=checkbox]{accent-color:var(--green);width:18px;height:18px;vertical-align:middle}label>span{display:block;margin-bottom:6px;font-size:13px;font-weight:600}.skip{position:fixed;left:16px;top:-80px;z-index:100;background:var(--green);color:white;padding:12px}.skip:focus{top:12px}.header{height:88px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 42px;gap:20px;background:var(--paper);position:relative;z-index:10}.brand{display:flex;gap:10px;align-items:center}.brand-mark{display:grid;place-items:center;background:var(--green);color:var(--lime);width:39px;height:43px;border-radius:10px 10px 3px 10px;font-size:33px;line-height:1}.brand-name{font-family:var(--serif);font-size:26px;line-height:1}.brand-name small{display:block;font-family:var(--sans);font-size:8px;letter-spacing:2.3px;font-weight:600;margin-top:7px}.header nav{display:flex;align-items:center;gap:30px;font-size:13px}.header nav a{padding:10px 0}.header nav .active{border-bottom:2px solid var(--green);font-weight:700}.teacher-link{border:1px solid var(--line)!important;padding:9px 17px!important;border-radius:7px}.header-end{display:flex;align-items:center;gap:10px;font-size:12px}.status-dot{width:6px;height:6px;border-radius:50%;background:#71904e;display:inline-block}.avatar{width:32px;height:32px;border-radius:50%;background:var(--peach);display:inline-grid;place-items:center;font-size:12px;font-weight:700}.layout{display:grid;grid-template-columns:222px minmax(0,1fr);min-height:calc(100vh - 88px)}.sidebar{border-right:1px solid var(--line);padding:32px 22px 24px;display:flex;flex-direction:column;gap:28px}.micro,.eyebrow{font-size:10px;letter-spacing:1.7px;text-transform:uppercase;font-weight:700}.micro{color:var(--muted)}.sidebar-title{font-size:13px;margin-bottom:11px}.side-links{display:grid;gap:5px}.side-links a{padding:10px 12px;border-radius:7px;font-size:12px;display:flex;align-items:center;gap:11px;min-height:43px}.side-links a.active{background:var(--sage);font-weight:700}.side-num{color:var(--muted);font-size:11px;min-width:18px}.side-label{display:block;font-size:11px;color:var(--muted);padding:0 12px;margin:14px 0 7px}.sidebar-bottom{margin-top:auto}.note-card{border:1px solid var(--line);border-radius:8px;padding:16px;font-size:12px;background:#edf0e3}.note-card strong{display:block;margin-bottom:6px}.note-card p{margin:0;color:var(--muted)}.tiny{font-size:11px;color:var(--muted)}.main{padding:32px 48px 24px;min-width:0;max-width:1510px;width:100%;margin:auto}.context-bar{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:25px}.level-tabs{display:flex;background:#eaece1;padding:4px;border-radius:9px;gap:3px}.level-tabs a{padding:8px 16px;border-radius:6px;font-size:12px;font-weight:600;white-space:nowrap}.level-tabs a.active{background:var(--white);box-shadow:0 1px 5px #203e3210}.level-tabs a span{color:var(--muted);font-size:10px;margin-left:7px}.pill{border:1px solid var(--line);border-radius:30px;padding:5px 11px;font-size:10px;white-space:nowrap;display:inline-flex;align-items:center;gap:6px}.pill.filled{background:var(--sage);border:0}.hero{position:relative;display:grid;grid-template-columns:1.05fr 1fr;gap:22px;align-items:center;min-height:332px;padding:26px 0 30px}.hero .eyebrow{color:var(--orange);margin-bottom:20px}.hero h1{max-width:540px;margin-bottom:19px}.hero h1 em{color:#5d7952;font-style:italic}.hero p{font-size:14px;max-width:390px;color:var(--muted);margin-bottom:23px}.hero-art{position:relative;padding:0 10px 15px;transform:rotate(1deg)}.hero-art svg{width:100%;max-height:340px}.art-caption{position:absolute;bottom:2px;left:31%;font-size:10px;font-family:var(--serif);font-style:italic;transform:rotate(-4deg)}.btn{border-radius:7px;background:var(--green);color:#fffef4;padding:12px 20px;display:inline-flex;align-items:center;justify-content:center;gap:16px;font-size:12px;font-weight:600;min-height:45px;transition:transform .18s,background .18s}.btn:hover{background:#356047;transform:translateY(-1px)}.btn.light{background:var(--white);border:1px solid var(--line);color:var(--ink)}.btn.light:hover{background:var(--sage)}.btn.small{padding:8px 12px;min-height:38px;font-size:11px}.text-link{font-size:12px;text-decoration:underline;text-underline-offset:4px}.section-heading{display:flex;align-items:center;justify-content:space-between;margin:18px 0;gap:16px}.section-heading h2{font-size:25px;margin:0}.section-heading p{margin:0;font-size:11px;color:var(--muted)}.missions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:19px}.mission{border:1px solid var(--line);background:var(--white);border-radius:11px;overflow:hidden;transition:transform .2s,box-shadow .2s}.mission:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.mission-art{height:134px;position:relative;display:grid;place-items:center;overflow:hidden;border-bottom:1px solid var(--line)}.mission-art svg{height:119px;width:100%}.mission-count{position:absolute;left:16px;top:12px;font-family:var(--serif);font-size:16px;color:#456043}.mission-body{padding:20px}.mission-body .micro{font-size:8px;letter-spacing:1.25px;margin-bottom:9px}.mission-body h3{font-size:19px;line-height:1.3;letter-spacing:-.4px;margin-bottom:9px}.mission-body p{font-size:12px;color:var(--muted);min-height:39px;margin-bottom:17px}.mission-bottom{display:flex;justify-content:space-between;font-size:11px;align-items:center;border-top:1px solid var(--line);padding-top:13px}.round-arrow{border:1px solid var(--line);width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:15px}.learning-strip{margin-top:25px;border-top:1px solid var(--line);padding:22px 0;display:flex;justify-content:space-between;gap:30px;align-items:center}.learning-strip p{margin:3px 0 0;font-size:11px;color:var(--muted)}.learning-steps{display:flex;gap:26px;font-size:11px;align-items:center}.learning-steps b{background:var(--sage);width:24px;height:24px;display:inline-grid;place-items:center;border-radius:50%;margin-right:6px}.footer{border-top:1px solid var(--line);padding:17px 0 0;display:flex;justify-content:space-between;font-size:9px;color:var(--muted);gap:14px}.footer a{text-decoration:underline}.breadcrumbs{font-size:11px;color:var(--muted);display:flex;gap:12px;align-items:center;margin:3px 0 23px}.activity-heading{display:flex;justify-content:space-between;gap:20px;align-items:start;margin-bottom:28px}.activity-heading h1{font-size:42px;margin:10px 0}.activity-heading p{color:var(--muted);font-size:13px;margin:0;max-width:650px}.activity-heading .pill{margin-top:12px}.book{border:1px solid #cbd3bd;border-radius:4px 15px 15px 4px;display:grid;grid-template-columns:32% 68%;box-shadow:8px 8px 0 -3px #e8ebdf,9px 9px 0 -3px #cbd3bd,var(--shadow);background:var(--white);margin-bottom:33px;position:relative;min-height:550px}.book-left{padding:31px 26px;border-right:1px solid var(--line);position:relative;background:linear-gradient(90deg,#fffef9 94%,#e8e9de 100%);border-radius:4px 0 0 4px}.book-left h2{font-size:28px;margin:20px 0}.book-left p{font-size:13px;color:var(--muted)}.book-left .big-question{font-family:var(--serif);color:var(--ink);font-size:22px;line-height:1.4}.steps{padding:0;list-style:none;counter-reset:step;margin:24px 0}.steps li{position:relative;padding:0 0 18px 29px;font-size:12px;color:var(--muted)}.steps li:before{counter-increment:step;content:counter(step);position:absolute;left:0;top:0;background:var(--sage);border-radius:50%;width:20px;height:20px;display:grid;place-items:center;font-size:10px;color:var(--green);font-weight:700}.vocab{border-top:1px solid var(--line);padding-top:16px;font-size:11px;margin-top:20px}.vocab b{display:block;margin-bottom:4px}.vocab span{color:var(--muted)}.book-right{padding:27px 30px 24px;min-width:0}.lab-top{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:20px}.lab-top .micro{font-size:9px}.lab-stage{border:1px solid var(--line);border-radius:10px;background:#f5f6ee;overflow:hidden;min-height:225px;padding:20px}.lab-stage.center{text-align:center}.lab-stage h3{font-size:18px;margin-bottom:10px}.lab-stage p{font-size:12px;color:var(--muted);margin-bottom:12px}.action-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:17px}.action-row.spread{justify-content:space-between}.feedback{padding:12px 15px;border-radius:8px;font-size:12px;background:var(--sage);margin-top:15px;border-left:3px solid #7b9256}.feedback.warn{background:#fae9d8;border-color:var(--orange)}.quiz{border-top:1px solid var(--line);padding-top:21px;margin-top:25px}.quiz h3{font-size:15px;line-height:1.4;margin:9px 0 14px}.choices{display:grid;gap:8px}.choice{text-align:left;border:1px solid var(--line);border-radius:7px;padding:11px 13px;background:var(--white);font-size:12px;min-height:44px;display:flex;align-items:center;gap:11px}.choice:hover{border-color:#6f8c53;background:#f2f4e9}.choice.selected{background:var(--sage);border-color:#7d975b}.choice.wrong{background:#fae7de;border-color:var(--orange)}.choice-letter{font-size:10px;border:1px solid var(--line);border-radius:50%;height:22px;width:22px;display:inline-grid;place-items:center;flex-shrink:0}.completion{border:1px solid #b9cb8b;background:#edf1d9;padding:18px;border-radius:9px;margin:18px 0 0}.completion h3{margin:0 0 5px;font-size:17px}.completion p{font-size:12px;margin:0 0 12px}.page-turn{display:flex;justify-content:space-between;align-items:center;font-size:11px;margin:18px 0}.page-turn a{min-height:44px;display:flex;align-items:center}.page-turn .page-no{font-family:var(--serif);font-style:italic;color:var(--muted)}.robot-object{height:160px;display:flex;justify-content:center;align-items:center;gap:32px}.robot-object svg{width:145px;height:150px}.robot-object .object-name{font-family:var(--serif);font-size:24px}.sorting-bins{display:grid;grid-template-columns:1fr 1fr;gap:12px}.sorting-bins button{border:1px solid var(--line);background:var(--white);min-height:58px;border-radius:9px;font-size:15px;font-weight:700}.sorting-bins button:hover{background:var(--lime)}.dots{display:flex;gap:8px;justify-content:center;padding:14px}.dots span{height:9px;width:9px;border-radius:50%;background:#d9decf}.dots .done{background:var(--green)}.sample-row{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.sample-mini{background:var(--white);padding:8px;border:1px solid var(--line);border-radius:7px;font-size:10px;text-align:center}.sample-mini svg{height:45px;width:70px}.pixel-layout{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:center}.pixel-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:5px;max-width:265px;width:100%;aspect-ratio:1}.pixel{background:#e4e8db;border:1px solid #d5dcc8;border-radius:5px;min-height:34px;position:relative}.pixel.on{background:var(--green);border-color:var(--green)}.pattern-preview{display:grid;grid-template-columns:repeat(5,12px);gap:2px;justify-content:center;margin:9px auto}.pattern-preview i{height:12px;background:#e1e4d6}.pattern-preview i.on{background:var(--green)}.pattern-targets{display:flex;gap:12px;margin-top:14px}.pattern-targets>div{background:var(--white);padding:9px;flex:1;border-radius:7px;font-size:11px;text-align:center;border:1px solid var(--line)}.result-number{font-family:var(--serif);font-size:36px;margin:3px 0;line-height:1.2}.scene-emoji{font-size:52px;margin:10px auto 16px}.scenario-count{display:inline-block;border-radius:30px;background:var(--white);border:1px solid var(--line);padding:3px 10px;font-size:10px}.scenario-text{font-family:var(--serif);font-size:23px;line-height:1.4;margin:18px auto!important;color:var(--ink)!important;max-width:420px}.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}.data-card{position:relative;border:1px solid var(--line);border-radius:8px;background:#fffdf6;padding:9px 4px;font-size:10px;text-align:center}.data-card.selected{outline:2px solid #6d8752;border-color:transparent;background:#edf1dc}.data-card svg{height:62px;width:100%}.data-card.night{background:#dae1e9}.data-card.night.selected{background:#cbd9dc}.data-check{position:absolute;top:3px;right:6px;font-size:11px}.data-caption{margin:17px 0 7px;font-size:11px;display:flex;justify-content:space-between}.test-results{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:12px}.test-result{padding:9px 5px;background:var(--white);border-radius:7px;font-size:9px;text-align:center;border:1px solid var(--line)}.test-result b{display:block;font-size:11px}.test-result.error{border-color:var(--orange);background:#fae8dd}.test-result svg{height:45px;width:100%}.chart{width:100%;height:auto}.chart text{font-family:var(--sans);font-size:10px;fill:var(--muted)}.chart-legend{display:flex;justify-content:center;gap:18px;font-size:10px;margin:2px 0 8px}.chart-legend span:before{content:'';width:8px;height:8px;display:inline-block;border-radius:50%;background:var(--green);margin-right:6px}.chart-legend span:nth-child(2):before{background:var(--orange)}.chart-legend span:nth-child(3):before{background:#92a9c5}.controls-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:16px}.control-label{display:flex;justify-content:space-between;font-size:11px;margin:0 0 5px;font-weight:600}.control-label output{font-family:monospace;color:var(--orange)}.metrics{display:flex;gap:12px;margin:14px 0 0}.metric{background:var(--white);border:1px solid var(--line);border-radius:7px;padding:10px 13px;flex:1;font-size:10px}.metric b{display:block;font-family:var(--serif);font-size:24px;line-height:1.4}.metric.orange b{color:var(--orange)}details{margin-top:18px;font-size:11px;color:var(--muted)}summary{cursor:pointer;min-height:34px}.tokens{display:flex;flex-wrap:wrap;gap:7px;justify-content:center;margin:18px 0}.token{border:1px solid var(--line);border-radius:7px;padding:11px 14px;min-height:44px;background:var(--white);font-size:14px}.token.selected{background:var(--green);color:var(--white)}.weight-row{display:grid;grid-template-columns:65px 1fr 40px;gap:12px;font-size:11px;align-items:center;margin:13px 0}.weight-bar{height:15px;background:#e3e7d9;border-radius:3px;overflow:hidden}.weight-bar i{display:block;background:#79945a;height:100%;transition:width .2s}.assignment-banner{border:1px solid #c7d1b4;background:var(--sage);border-radius:9px;padding:13px 16px;font-size:12px;margin:0 0 18px;display:flex;justify-content:space-between;gap:12px;align-items:center}.student-class{font-size:11px;max-width:190px;padding:5px 8px;min-height:34px}.discovery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:26px 0}.discovery{background:var(--white);border:1px solid var(--line);border-radius:10px;padding:23px}.discovery .stamp{font-size:38px;margin-bottom:16px;color:#79945a}.discovery h3{font-size:18px}.discovery p{font-size:12px;color:var(--muted)}.discovery.locked{background:#efefe5}.badge{font-size:9px;border-radius:20px;padding:4px 8px;background:var(--sage);display:inline-block}.badge.orange{background:var(--peach);color:#925030}.badge.blue{background:var(--blue);color:#3e6474}.teacher .main{padding-top:33px}.teacher .sidebar{background:#f0f1e7}.teacher-top{display:flex;justify-content:space-between;gap:24px;align-items:center;margin-bottom:25px}.teacher-top h1{font-size:38px;margin:8px 0 10px}.teacher-top p{font-size:12px;color:var(--muted);margin:0}.demo-notice{font-size:11px;background:#e9ecdf;border:1px solid #d6ddc8;padding:10px 14px;border-radius:7px;margin-bottom:23px;display:flex;gap:9px;align-items:center}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin-bottom:25px}.stat{background:var(--white);border:1px solid var(--line);border-radius:9px;padding:18px 20px}.stat span{font-size:11px;color:var(--muted)}.stat strong{display:block;font-size:31px;font-family:var(--serif);font-weight:500;margin:5px 0}.stat small{font-size:10px;color:var(--muted)}.dashboard-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:22px}.panel{border:1px solid var(--line);border-radius:10px;background:var(--white);overflow:hidden;margin-bottom:22px}.panel-head{padding:18px 21px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:14px}.panel-head h2{font-size:21px;margin:0}.panel-body{padding:20px}.class-card{display:flex;gap:15px;align-items:center;border-bottom:1px solid var(--line);padding:15px 20px}.class-card:last-child{border-bottom:0}.class-icon{display:grid;place-items:center;width:45px;height:45px;border-radius:10px;background:var(--sage);font-family:var(--serif);font-size:21px;flex-shrink:0}.class-info{flex:1;min-width:0}.class-info strong{font-size:13px;display:block}.class-info small{font-size:10px;color:var(--muted)}.class-progress{width:70px;height:5px;background:#e9ecdf;border-radius:9px;margin-top:7px;overflow:hidden}.class-progress i{display:block;height:100%;background:#88a264}.class-card .btn{font-size:10px;padding:6px 10px;min-height:34px}.lesson-preview{padding:23px;background:#edf0df}.lesson-preview h3{font-family:var(--serif);font-size:25px;margin:15px 0 10px}.lesson-preview p{font-size:12px;color:var(--muted)}.lesson-preview .btn{margin-top:4px}.assignment-list-item{padding:16px 20px;border-bottom:1px solid var(--line);display:flex;gap:13px;align-items:center}.assignment-list-item:last-child{border:0}.assignment-list-item .a-icon{background:var(--peach);border-radius:7px;padding:7px 11px}.assignment-list-item p{margin:0;font-size:12px;font-weight:600}.assignment-list-item small{font-size:10px;color:var(--muted)}.assignment-list-item .grow{flex:1}.table-toolbar{display:flex;gap:12px;justify-content:space-between;padding:16px 20px;flex-wrap:wrap}.table-toolbar input{font-size:12px;width:210px}.table-toolbar select{font-size:12px}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;text-align:left;white-space:nowrap}th{font-size:9px;letter-spacing:1px;text-transform:uppercase;color:var(--muted);font-weight:500;background:#f7f7ef}td,th{padding:13px 20px;border-bottom:1px solid #eaecdf}td{font-size:12px}td small{font-size:10px}tbody tr:last-child td{border-bottom:0}.student-name{display:flex;align-items:center;gap:10px}.student-name .avatar{background:var(--sage);width:29px;height:29px;font-size:9px}.progress-cell{display:flex;align-items:center;gap:10px}.progress-cell .class-progress{margin:0}.empty-state{padding:40px 24px;text-align:center;color:var(--muted);font-size:13px}.report-bars{display:flex;align-items:end;justify-content:space-around;gap:18px;height:190px;margin:18px 0 34px}.report-column{flex:1;height:100%;display:flex;flex-direction:column;justify-content:end;text-align:center;gap:7px;position:relative}.report-column i{background:#a5ba75;border-radius:5px 5px 0 0;width:100%;display:block;min-height:2px}.report-column span{position:absolute;top:100%;font-size:10px;width:100%;padding-top:7px}.report-column b{font-size:11px;font-weight:500}.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.guide-card{border:1px solid var(--line);border-radius:10px;background:var(--white);padding:24px}.guide-card h2{font-size:24px}.guide-card p,.guide-card li{font-size:12px;color:var(--muted)}.guide-card ul{padding-left:18px}.timeline{margin:15px 0}.timeline>div{display:flex;gap:15px;margin:14px 0;font-size:12px}.timeline b{font-size:11px;min-width:55px;color:var(--orange)}.sources a{display:block;font-size:12px;text-decoration:underline;text-underline-offset:4px;margin:10px 0}.sources p{font-size:11px;color:var(--muted)}dialog{border:1px solid var(--line);border-radius:14px;padding:0;background:var(--white);color:var(--ink);width:min(520px,calc(100% - 32px));box-shadow:0 25px 100px #183e3630;max-height:85vh;overflow:auto}dialog::backdrop{background:#1f392d55;backdrop-filter:blur(3px)}.dialog-head{display:flex;justify-content:space-between;align-items:center;padding:24px 27px 0}.dialog-head h2{font-size:27px;margin:0}.close{font-size:25px;min-width:44px;min-height:44px}.dialog-body{padding:18px 27px 28px}.dialog-body p{font-size:13px;color:var(--muted)}.dialog-body label{margin-bottom:17px}.dialog-body input,.dialog-body select{width:100%}.dialog-body .form-row{display:grid;grid-template-columns:1fr 1fr;gap:15px}.dialog-body .btn{width:100%;margin-top:8px}#toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,15px);background:var(--green);color:var(--white);font-size:12px;border-radius:9px;padding:12px 22px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.2s;z-index:100;max-width:90%;text-align:center}#toast.show{opacity:1;transform:translate(-50%,0)}.mobile-menu{display:none}.no-margin{margin:0!important}.teacher-return{padding:9px 18px;background:var(--lime);font-size:11px;display:flex;align-items:center;justify-content:center;gap:20px}.teacher-return button{text-decoration:underline;min-height:25px}.glossary-list{display:grid;grid-template-columns:1fr 1fr;gap:18px}.glossary-list div{border-bottom:1px solid var(--line);padding-bottom:14px}.glossary-list strong{font-size:14px}.glossary-list p{font-size:12px;margin:5px 0 0}.early .book-left .steps li,.early .book-left p{font-size:15px}.early .choice{font-size:14px;min-height:51px}.early .book-left .big-question{font-size:25px}.early .book-right .lab-stage p{font-size:14px}
@media(min-width:1500px){.main{padding-left:65px;padding-right:65px}.hero h1{font-size:64px}.hero{min-height:380px}.hero-art svg{max-height:365px}.mission-art{height:155px}.mission-art svg{height:140px}}
@media(max-width:1180px){.header{padding:0 25px}.header-end{display:none}.layout{grid-template-columns:190px minmax(0,1fr)}.sidebar{padding:26px 15px}.main{padding:28px}.hero h1{font-size:47px}.context-bar{flex-wrap:wrap}.level-tabs a{padding:8px 12px}.book{grid-template-columns:32% 68%}.book-left{padding:25px 20px}.book-right{padding:24px 20px}.mission-body{padding:17px}.mission-body h3{font-size:17px}.learning-steps{gap:13px}.teacher-top h1{font-size:32px}.dashboard-grid{grid-template-columns:1.3fr 1fr}.stats-grid{gap:10px}.stat{padding:15px}.teacher-top{align-items:start}.activity-heading h1{font-size:36px}}
@media(max-width:950px){.header{height:77px}.layout{grid-template-columns:1fr;min-height:calc(100vh - 77px)}.sidebar{display:none}.main{padding:25px 30px}.hero{min-height:300px;padding-top:12px}.hero h1{font-size:49px}.hero-art svg{max-height:280px}.book{grid-template-columns:33% 67%}.activity-heading h1{font-size:35px}.header nav{gap:23px}.mission-art{height:120px}.mission-art svg{height:108px}}
@media(max-width:660px){.header{height:74px;padding:0 19px;gap:12px}.brand-name{font-size:23px}.brand-mark{width:33px;height:37px;font-size:29px}.brand-name small{font-size:7px;letter-spacing:1.7px}.header nav{gap:12px;font-size:11px}.header nav a:first-child{display:none}.header nav a.teacher-link{padding:7px 10px!important}.main{padding:22px 19px}.context-bar{margin-bottom:13px;gap:12px}.level-tabs{width:100%;justify-content:space-between}.level-tabs a{font-size:10px;padding:9px 8px;flex:1;text-align:center}.level-tabs a span{display:block;margin-left:0;font-size:9px}.context-bar>.pill{display:none}.hero{display:flex;flex-direction:column;align-items:start;padding:21px 0 7px;gap:8px}.hero h1{font-size:48px;letter-spacing:-2px;max-width:350px}.hero p{font-size:13px;max-width:330px}.hero .eyebrow{font-size:9px;margin-bottom:16px}.hero-art{width:100%;max-width:410px;align-self:center;padding-bottom:15px}.hero-art svg{max-height:250px}.hero .btn{padding:10px 16px}.section-heading{margin:23px 0 16px}.section-heading h2{font-size:23px}.section-heading p{font-size:10px}.missions{grid-template-columns:1fr;gap:15px}.mission{display:grid;grid-template-columns:34% 66%}.mission-art{height:100%;border:0;border-right:1px solid var(--line);min-height:184px}.mission-art svg{height:125px}.mission-count{left:12px;top:9px}.mission-body{padding:18px}.mission-body h3{font-size:18px}.mission-body p{min-height:0;margin-bottom:13px;font-size:11px}.mission-body .micro{font-size:8px}.mission-bottom{padding-top:11px}.learning-strip{display:block;margin-top:23px;padding:21px 0}.learning-steps{margin-top:17px;font-size:10px;gap:16px}.learning-steps b{width:21px;height:21px;margin-right:4px}.footer{font-size:9px;flex-wrap:wrap;gap:7px}.activity-heading{margin-bottom:20px;display:block}.activity-heading h1{font-size:36px;letter-spacing:-1.5px;margin:13px 0}.activity-heading .pill{margin-top:15px}.breadcrumbs{margin-bottom:20px;font-size:10px}.book{display:block;border-radius:5px 12px 12px 5px;box-shadow:4px 5px 0 -1px #e3e8d6}.book-left{border:0;border-bottom:1px dashed var(--line);padding:24px;background:#fdfcf4;border-radius:5px 12px 0 0}.book-left h2{margin:11px 0;font-size:25px}.book-left .big-question{font-size:21px}.book-left p{margin-bottom:10px}.steps{margin:18px 0 0}.steps li{padding-bottom:12px}.vocab{margin-top:4px;padding-top:12px}.book-right{padding:23px 18px}.lab-stage{padding:15px}.lab-top{margin-bottom:16px}.robot-object{gap:10px}.robot-object svg{width:115px}.robot-object .object-name{font-size:22px}.pixel-layout{grid-template-columns:1fr;gap:19px}.pixel-grid{margin:auto;max-width:250px}.pattern-targets{max-width:240px;margin:14px auto}.pixel-result{text-align:center}.data-grid{gap:7px;grid-template-columns:repeat(2,1fr)}.data-card svg{height:61px}.test-results{grid-template-columns:repeat(2,1fr)}.controls-grid{gap:15px}.metric{padding:9px}.metric b{font-size:22px}.quiz h3{font-size:15px}.discovery-grid{grid-template-columns:1fr}.teacher-top{display:block}.teacher-top .btn{margin-top:16px}.teacher-top h1{font-size:34px}.stats-grid{grid-template-columns:1fr 1fr;gap:12px}.stat strong{font-size:29px}.stat{padding:15px 17px}.demo-notice{font-size:10px;align-items:start}.dashboard-grid,.guide-grid{grid-template-columns:1fr}.panel-head{padding:16px}.class-card{padding:15px}.class-card .btn{padding:6px 9px}.assignment-list-item{padding:15px}.table-toolbar{padding:14px}.table-toolbar input{width:100%}.table-toolbar select{flex:1;min-width:0}td,th{padding:12px 14px}.teacher .main{padding-top:24px}.guide-card{padding:21px}.teacher-return{font-size:10px;padding:7px 12px;gap:10px}.assignment-banner{font-size:10px}.glossary-list{grid-template-columns:1fr}.dialog-body .form-row{grid-template-columns:1fr}.lab-stage .scenario-text{font-size:22px}.early .book-left p{font-size:14px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.teacher-mobile-nav{display:none}@media(max-width:950px){.teacher-mobile-nav{display:flex;gap:6px;padding:10px 24px;border-bottom:1px solid var(--line);overflow-x:auto;white-space:nowrap;font-size:12px}.teacher-mobile-nav a{padding:9px 13px;border-radius:6px;min-height:40px}.teacher-mobile-nav a.active{background:var(--sage);font-weight:700}.pixel-layout{grid-template-columns:1fr}.pixel-grid{margin:auto}.pixel-result{text-align:center}.pattern-targets{max-width:260px;margin:14px auto}}@media(max-width:660px){.teacher-mobile-nav{padding:8px 12px;font-size:11px;gap:2px}.teacher-mobile-nav a{padding:10px 9px;min-height:40px}.table-toolbar .btn{min-height:44px}.btn.small{min-height:44px}}