:root{--ink:#1c3442;--muted:#667884;--border:#e3e9e9;--cream:#f7f8f5;--navy:#173747;--teal:#188c78;--paper:#fff;--mint:#e7f4ed}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:'DM Sans',Arial,sans-serif;background:var(--cream)}button,input,select{font:inherit}button{cursor:pointer}.app-shell{display:flex;min-height:100vh}.sidebar{width:252px;background:#173848;color:#fff;flex-shrink:0;padding:30px 18px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{display:flex;align-items:center;gap:12px;margin:3px 6px 48px}.brand-icon{width:42px;height:42px;background:#f8be65;color:#183c47;border-radius:13px;display:grid;place-items:center;font-size:27px}.brand strong{font-size:15px;line-height:1.25;display:block;letter-spacing:-.3px}.brand span{display:block;font-size:11px;color:#b2cbd2;margin-top:5px;letter-spacing:1.1px;text-transform:uppercase}.brand i{font-style:normal;color:#f9c670}.nav-label{font-size:10px;color:#8baab6;letter-spacing:1.7px;font-weight:700;margin:0 16px 14px}.nav{color:#b7cbd0;text-decoration:none;border-radius:10px;padding:13px 15px;display:flex;gap:14px;align-items:center;font-size:13px;margin-bottom:6px}.nav span{font-size:20px}.nav.active{background:#285362;color:#fff;font-weight:700}.side-bottom{margin-top:auto}.side-note{background:#254b59;border:1px solid #3b6370;border-radius:13px;padding:17px}.spark{font-size:24px;color:#f6bf6a}.side-note strong{display:block;font-size:13px;margin:9px 0}.side-note p{color:#b8ced5;font-size:12px;line-height:1.6;margin:0}.prototype{font-size:10px;color:#8eacb6;padding:18px 5px 0;line-height:1.4}main{min-width:0;flex:1}.topbar{height:74px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 40px}.breadcrumb{font-size:13px;color:#71828b}.breadcrumb span{margin:0 12px;color:#bec9cc}.top-pill{font-size:12px;background:#edf7f2;border-radius:50px;color:#37775d;padding:8px 13px;font-weight:700}.online{display:inline-block;width:7px;height:7px;border-radius:50%;background:#33a777;margin-right:7px}.content{max-width:1480px;margin:0 auto;padding:35px 40px}.hero{position:relative;background:#e8f1e8;border-radius:17px;min-height:230px;overflow:hidden;display:flex;justify-content:space-between;padding:34px 45px;margin-bottom:26px}.hero>div:first-child{max-width:630px;z-index:1}.eyebrow{font-size:11px;font-weight:800;letter-spacing:2px;color:#338578}.star{font-size:17px;margin-left:5px;color:#eaad46}h1,h2{margin:0}h1{font-family:Fraunces,Georgia,serif;font-size:clamp(30px,3.2vw,47px);line-height:1.11;letter-spacing:-1.5px;margin:14px 0}h1 em{font-weight:600;font-style:normal;color:#1b907a}.hero p{font-size:13px;color:#5d7073;line-height:1.65;margin:0;max-width:510px}.hero-art{position:relative;min-width:240px;margin-right:25px}.art-sheet{background:#fff;border-radius:7px;box-shadow:0 12px 30px #0d5f4f1b;position:absolute;padding:25px;width:190px;height:215px}.sheet-back{transform:rotate(13deg);top:1px;right:12px;background:#f7c97f;display:flex;flex-direction:column;gap:20px;color:#8d6f3a;padding-top:65px}.sheet-front{transform:rotate(-8deg);top:6px;right:72px}.art-check{position:absolute;right:14px;top:13px;background:#d6f2e4;color:#238b6c;border-radius:50%;width:27px;height:27px;text-align:center;padding-top:3px}.art-line{height:7px;border-radius:7px;background:#e6eff0;margin:13px 0;width:80%}.art-line.short{width:51%}.art-math{font-size:18px;margin:22px 0;color:#24495a}.art-math b{color:#1a9377}.work-grid{display:grid;grid-template-columns:minmax(300px,405px) minmax(420px,1fr);gap:22px;align-items:stretch}.panel{background:white;border:1px solid var(--border);border-radius:15px;box-shadow:0 7px 20px #102c3510;min-width:0}.controls{padding:26px 27px}.panel-heading{display:flex;align-items:center;gap:12px;margin-bottom:26px}.step{width:37px;height:37px;border-radius:10px;background:#e2f5ee;color:#268979;font-size:13px;font-weight:800;display:grid;place-items:center}.step.peach{background:#fff0dd;color:#b78339}.panel h2{font-size:17px;font-weight:800;letter-spacing:-.3px}.panel-heading p{font-size:12px;color:#829098;margin:4px 0 0}form>label:not(.check-row),.fields-row label{display:flex;justify-content:space-between;font-size:12px;font-weight:800;color:#344c5a;margin:20px 0 9px}.label-detail{font-weight:600;color:#208d76}.grade-buttons,.difficulty-buttons{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}.grade-buttons button,.difficulty-buttons button{background:#f7f9f8;border:1px solid #e0e7e8;border-radius:8px;padding:11px 4px;font-weight:700;color:#657781;font-size:12px}.grade-buttons button.selected,.difficulty-buttons button.selected{background:#e6f5ef;border:1px solid #26947d;color:#147b67;box-shadow:inset 0 0 0 1px #26947d}select,input[type=text],input:not([type]){width:100%;padding:12px 13px;border:1px solid #dbe4e5;border-radius:8px;color:#314b58;background:#fff;outline-color:#2c9a83;font-size:13px}select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23677b83' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}.fields-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.check-row{display:flex;gap:10px;align-items:center;color:#5b6c75;font-size:12px;margin:15px 0}.check-row input{accent-color:#198b76;width:16px;height:16px}.generate{width:100%;border:0;border-radius:9px;padding:14px 18px;color:#fff;background:#178d79;font-size:13px;font-weight:800;margin-top:12px;box-shadow:0 7px 13px #178d7927;text-align:left}.generate span:first-child{color:#f6d57c;margin-right:8px}.arrow{float:right;font-size:17px}.generate:hover,.primary:hover{background:#0c7563}.preview-panel{display:flex;flex-direction:column;overflow:hidden}.preview-head{padding:26px 26px 0;display:flex;justify-content:space-between;gap:10px}.preview-head .panel-heading{margin-bottom:20px}.preview-status{background:#eaf7f1;color:#228d65;padding:7px 10px;border-radius:20px;font-weight:700;font-size:10px;height:max-content}.preview-tabs{border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 26px;gap:24px}.tab{border:0;background:none;color:#84929a;padding:11px 1px 14px;font-size:12px;font-weight:700;border-bottom:2px solid transparent}.tab.selected{border-color:#218f77;color:#218f77}.count-pill{margin-left:auto;background:#f0f3f2;font-size:10px;padding:6px 9px;border-radius:6px;color:#788b91}.paper-scroll{background:#f2f4f2;flex:1;padding:26px;overflow:auto;min-height:485px;max-height:660px}.paper{width:100%;max-width:650px;min-height:580px;padding:36px 34px;margin:0 auto;background:white;box-shadow:0 5px 16px #1a404014;color:#182f39}.paper-title{text-align:center;font-size:19px;font-weight:800;margin-bottom:5px}.paper-subtitle{text-align:center;color:#67808b;font-size:11px}.paper-meta{display:flex;gap:20px;justify-content:space-between;font-size:11px;margin:26px 0 20px;padding-bottom:12px;border-bottom:1px solid #b9c9ce}.questions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 28px}.questions.one{grid-template-columns:1fr}.question{min-width:0;break-inside:avoid;page-break-inside:avoid;padding:5px 0}.question .qline{font-size:14px;font-weight:600;line-height:1.6;overflow-wrap:anywhere}.question .number{color:#6c7e87;margin-right:6px;font-weight:700}.work-lines{border-bottom:1px solid #e3e9eb;height:27px;margin-top:7px}.answer-question{font-size:13px;padding:7px 0;border-bottom:1px solid #e9eeee;line-height:1.5;break-inside:avoid}.answer-question strong{color:#118b77}.preview-footer{border-top:1px solid var(--border);padding:17px 22px;display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.preview-footer>span{font-size:10px;color:#7e8e95}.verified{color:#15996d;font-weight:900}.action-buttons{display:flex;gap:8px}.action-buttons button{font-size:11px;font-weight:800;border-radius:7px;padding:11px 13px}.secondary{border:1px solid #d5e0e2;background:#fff;color:#3d5663}.primary{border:1px solid #178d79;background:#178d79;color:#fff}.how{display:grid;grid-template-columns:230px 1fr;gap:35px;align-items:center;margin:50px 0}.how h2{font-family:Fraunces,serif;margin-top:10px;font-size:25px;line-height:1.3}.how-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.how-cards>div{background:#fff;border:1px solid #e5eaea;border-radius:12px;padding:19px}.feature-icon{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;font-size:21px;margin-bottom:13px}.feature-icon.blue{background:#e5f0fb;color:#4c7ea3}.feature-icon.yellow{background:#fff3db;color:#b58434}.feature-icon.green{background:#e2f5eb;color:#168c69}.how-cards strong{display:block;font-size:12px}.how-cards p{font-size:11px;color:#7a898f;line-height:1.6}footer{border-top:1px solid var(--border);padding:20px 0;color:#82939a;font-size:11px;display:flex;justify-content:space-between}#printRoot{display:none}.print-paper{padding:0}.print-page{break-after:page;page-break-after:always}.print-page:last-child{break-after:auto;page-break-after:auto}.print-label{text-align:right;font-size:10px;color:#687d87;margin-bottom:12px}
@media(max-width:1150px){.sidebar{width:210px}.content{padding:28px}.work-grid{grid-template-columns:330px minmax(0,1fr)}.hero-art{min-width:180px;margin-right:0}.art-sheet{transform:scale(.8) rotate(-8deg)}.sheet-back{transform:scale(.8) rotate(13deg)}.sheet-front{right:23px}.paper{padding:25px 20px}.questions{gap:12px}}
@media(max-width:900px){.sidebar{display:none}.topbar{padding:0 22px}.content{padding:22px}.work-grid{grid-template-columns:1fr}.hero-art{display:none}.hero{padding:27px}.how{grid-template-columns:1fr}.paper-scroll{max-height:none}.paper{max-width:700px}.preview-footer{justify-content:space-between}}
@media(max-width:540px){.topbar{height:58px}.content{padding:14px}.hero{padding:24px 20px;min-height:0}.hero h1{font-size:32px}.hero p{font-size:12px}.controls{padding:20px}.preview-head{padding:20px 18px 0}.preview-tabs{padding:0 18px}.paper-scroll{padding:13px}.paper{padding:24px 15px;min-height:460px}.questions{gap:11px}.question .qline{font-size:12px}.preview-footer{padding:14px}.preview-footer>span{width:100%}.action-buttons{width:100%}.action-buttons button{flex:1}.how-cards{grid-template-columns:1fr}.how{margin:35px 0}footer{display:block;line-height:2}footer span{display:block}}
@media print{@page{size:letter;margin:0.65in}body{background:white}.app-shell{display:none!important}#printRoot{display:block!important}.print-paper{font-family:Arial,sans-serif;color:#000}.print-paper .paper-title{font-size:18pt}.print-paper .paper-subtitle{color:#555}.print-paper .questions{gap:14pt 28pt}.print-paper .question .qline{font-size:12pt}.print-paper .work-lines{border-color:#bbb;height:34pt}.print-paper .paper-meta{margin:20pt 0}.print-page{padding:0}.answer-question{font-size:11pt}.print-label{color:#555}}
.test-builder{margin-top:24px;padding:30px}.test-builder-head{display:flex;align-items:flex-start;gap:15px;margin-bottom:26px}.test-builder-head h2{font:700 25px Fraunces,Georgia,serif;margin:8px 0}.test-builder-head p{font-size:12px;line-height:1.6;color:var(--muted);margin:0}.test-builder-layout{display:grid;grid-template-columns:minmax(280px,1.3fr) minmax(260px,1fr);gap:30px}.topic-picker{border:0;margin:0;padding:0;min-width:0}.topic-picker legend{font-size:13px;font-weight:800;color:#344c5a;margin-bottom:14px}.topic-picker legend span{font-size:11px;margin-left:7px}.test-topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.topic-check{display:flex;align-items:center;gap:9px;padding:12px 13px;border:1px solid #dce8e5;border-radius:10px;background:#f8fbfa;color:#344e58;font-size:12px;font-weight:700;cursor:pointer}.topic-check:has(input:checked){background:#e5f6ee;border-color:#70b7a6}.topic-check input{accent-color:#188d78;width:17px;height:17px;flex-shrink:0}.test-option-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.test-options label:not(.check-row){display:block;font-size:12px;font-weight:800;color:#344c5a;margin:0 0 8px}.test-options>.test-option-row+label{margin-top:14px}.test-options .check-row{margin:12px 0}.test-generate{text-align:left;margin-top:7px}.test-hint{font-size:11px;line-height:1.5;color:#638276;margin:10px 0 0}.test-hint.error{color:#a43b3b}.question-topic{display:inline-block;background:#eaf5f0;color:#286b5c;font-size:10px;font-weight:700;padding:2px 6px;border-radius:4px;margin-right:5px;white-space:nowrap}.mark-label{font-size:10px;color:#70838b;white-space:nowrap}@media(max-width:900px){.test-builder-layout{grid-template-columns:1fr}}@media(max-width:540px){.test-builder{padding:20px}.test-topic-grid{grid-template-columns:1fr}.test-builder-head h2{font-size:22px}}@media print{.print-paper .question-topic{border:1px solid #aaa;background:none;color:#444}.print-paper .mark-label{color:#555}}