@font-face{font-family:Manrope;src:url('/assets/manrope-500.woff2')}@font-face{font-family:Nunito;src:url('/assets/nunito-sans-400.woff2')}@font-face{font-family:Nunito;src:url('/assets/nunito-sans-700.woff2');font-weight:700}:root{--blue:#526c7c;--cream:#fff5d9;--ink:#293f4c;--muted:#667782;--paper:#fffdf6;--line:#d9dedb;--sage:#e9f0ee}*{box-sizing:border-box}body{margin:0;background:#f6f2e8;color:var(--ink);font:17px/1.6 Nunito,sans-serif}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer;border:1px solid var(--blue);border-radius:6px;padding:10px 18px;background:var(--blue);color:var(--cream);font-weight:700}button:hover{filter:brightness(.95)}button:disabled{opacity:.5;cursor:not-allowed}input,select,textarea{background:var(--paper);border:1px solid #b6c4c9;border-radius:5px;padding:9px 12px;min-width:0}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #bf8c32;outline-offset:3px}header{max-width:1280px;margin:auto;padding:22px 36px;display:flex;align-items:center;gap:30px;justify-content:space-between}.logo img{width:185px;display:block}nav{display:flex;gap:5px}.nav-button{border:0;background:transparent;color:var(--muted);padding:9px 12px;font-size:15px}.nav-button.active{color:var(--ink);background:var(--sage)}main{max-width:1200px;margin:auto;padding:0 28px 40px}.intro{background:var(--blue);color:var(--cream);border-radius:12px;padding:46px 48px;display:grid;grid-template-columns:1.6fr 1fr;gap:60px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:2px;margin:0 0 12px}h1,h2,h3{font-family:Manrope,sans-serif;font-weight:500;line-height:1.25}h1{font-size:clamp(32px,4vw,49px);margin:16px 0 22px}h2{font-size:28px;margin:0 0 12px}h3{font-size:21px;margin:0 0 12px}p{margin:10px 0}.lead{font-size:17px;opacity:.9}.intro-tags{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px;font-size:13px}.intro-tags span+span{border-left:1px solid #fff5d955;padding-left:14px}.intro-note{border-left:1px solid #fff5d944;padding:28px 0 20px 40px;align-self:center}.intro-note h2{font-size:28px;line-height:1.5;margin:15px 0}.intro-note p{font-size:15px;opacity:.8}.small-number{font-size:15px;letter-spacing:4px;opacity:.8}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:24px;margin:38px 0 20px}.search span{display:block;font-size:13px;margin-bottom:5px}.search input{width:300px}.muted{color:var(--muted)}.small{font-size:13px}.chapter-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin:22px 0}.chapter{background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:24px;display:flex;flex-direction:column;min-width:0}.chapter-top{display:flex;justify-content:space-between;gap:12px;margin-bottom:20px}.chapter-no{font-size:13px;color:var(--muted);letter-spacing:1px}.badge{border-radius:30px;background:var(--sage);padding:4px 10px;font-size:12px;white-space:nowrap;font-weight:700;display:inline-block}.chapter h3{margin-bottom:8px}.chapter p{font-size:14px;color:var(--muted);margin:0 0 18px}.chapter details{border-top:1px solid var(--line);padding-top:14px}.chapter summary{cursor:pointer;font-size:14px;font-weight:700}.checkpoint-button{background:transparent;border:0;border-bottom:1px solid var(--line);border-radius:0;color:var(--ink);width:100%;text-align:left;font-size:15px;font-weight:400;padding:13px 0;display:flex;gap:12px;justify-content:space-between}.checkpoint-button small{font-size:12px;flex-shrink:0;color:var(--muted)}.chapter .outline{margin-top:auto}.outline{background:transparent;color:var(--blue)}.text-button{background:transparent;border:0;color:var(--blue);padding:5px 0;font-size:15px}.filters{display:flex;gap:12px;flex-wrap:wrap}.filters label{font-size:13px}.filters select{display:block;margin-top:4px;font-size:15px}#checkpoint-panel{padding:20px 0}.question-row{display:flex;justify-content:space-between;align-items:center;gap:20px;background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:20px 24px;margin:12px 0}.question-row p{font-size:14px;margin:4px 0}.empty{background:var(--sage);border:1px solid #c5d1d3;border-radius:8px;padding:24px;margin:20px 0}.connection{padding:20px;border-left:3px solid var(--blue);background:var(--sage);margin:18px 0}.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:25px 0}.plan{background:var(--paper);padding:28px;border:1px solid var(--line);border-radius:10px;display:flex;flex-direction:column}.plan h3{margin-top:20px}.plan strong{font:500 34px Manrope}.plan strong small{font:15px Nunito}.plan ul{padding-left:20px;font-size:15px;flex:1}.plan p{font-size:15px}.plan .badge{align-self:start}.membership-note{background:var(--sage);padding:18px;border-radius:7px}.history-card{padding:22px;background:var(--paper);border:1px solid var(--line);border-radius:8px;margin:14px 0}.history-card summary{cursor:pointer;font-weight:700}.feedback{background:var(--sage);border:1px solid #bccdc7;padding:22px;border-radius:8px;margin:20px 0}.feedback h3{font-size:20px}.error{color:#a1332d}#message:not(:empty){padding:12px 18px;background:var(--sage);border-radius:8px;margin:18px 0}footer{max-width:1200px;margin:auto;border-top:1px solid var(--line);padding:24px 28px;display:flex;justify-content:space-between;font-size:13px;color:var(--muted)}a{color:var(--blue)}dialog{border:1px solid #afc0c6;border-radius:10px;background:#f6f2e8;color:var(--ink);padding:28px;max-width:calc(100vw - 24px)}dialog::backdrop{background:#203743aa}body:has(dialog[open]){overflow:hidden}.modal-heading{display:flex;align-items:center;justify-content:space-between;gap:20px}.icon{background:transparent;color:var(--blue);font-size:25px;border:0;padding:0 8px}#auth-dialog{width:480px}#auth-form label{display:block;margin:15px 0;font-size:14px}#auth-form input,#auth-form select{display:block;width:100%;margin-top:5px}#question-dialog{width:100vw;max-width:none;height:100dvh;max-height:none;margin:0;inset:0;padding:0;border:0;border-radius:0}#question-dialog[open]{display:flex;flex-direction:column}.reader-heading{padding:14px 24px;background:var(--blue);color:var(--cream);display:flex;justify-content:space-between;align-items:center;gap:20px;flex:0 0 auto}.reader-heading h2{font-size:20px;margin:0}.reader-heading .eyebrow{font-size:10px;margin:0 0 4px}.reader-heading .outline{border-color:var(--cream);color:var(--cream);font-size:14px}.reader-layout{display:grid;grid-template-columns:1fr 1fr;flex:1;min-height:0}.question-side,.working-side{overflow:auto;overscroll-behavior:contain;padding:24px;min-width:0}.question-side{background:#e5eae6;border-right:1px solid 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#293f4c11;border-radius:5px;position:relative;margin-bottom:16px}.writing-sheet canvas{display:block;width:100%;aspect-ratio:1.4;touch-action:none;cursor:crosshair}.sheet-label{font-size:11px;letter-spacing:1px;color:var(--muted);padding:8px 12px;border-bottom:1px solid #edf0ed}.typed-working{display:block;font-size:14px;margin-top:20px}.typed-working textarea{display:block;width:100%;margin-top:6px;resize:vertical}.review-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:15px}#candidate-dialog{width:96vw;max-height:95dvh}#candidate-dialog .candidate-docs{display:grid;grid-template-columns:1fr 1fr;gap:20px}.candidate-docs section{max-height:55vh;overflow:auto}#approve-checkpoints{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}#approve-checkpoints label{font-size:14px;display:flex;align-items:start;gap:8px}fieldset{border:1px solid var(--line);padding:15px;margin:15px 0}#approve-form>label{display:block;margin:12px 0}.check{font-size:14px}.candidate-row{border:1px solid var(--line);padding:15px;border-radius:7px;background:var(--paper);margin:10px 0}.candidate-row button{font-size:13px;padding:6px 12px}.candidate-row p{font-size:14px}.trial-status{font-size:14px;background:var(--sage);padding:10px 14px;border-radius:6px} [hidden]{display:none!important}@media(max-width:850px){header{padding:18px 20px;gap:12px;flex-wrap:wrap}nav{order:3;width:100%;overflow:auto}.intro{grid-template-columns:1fr;padding:32px;gap:20px}.intro-note{border-left:0;border-top:1px solid #fff5d944;padding:20px 0 0}.intro-note h2{font-size:22px}.chapter-grid{grid-template-columns:repeat(2,1fr)}.plans{grid-template-columns:1fr}.section-heading{align-items:start;flex-direction:column}.reader-layout{display:block;overflow:auto}.question-side,.working-side{overflow:visible;padding:18px}.write-tools{top:0}.reader-heading{padding:12px}.reader-heading h2{font-size:17px}.reader-heading .outline{font-size:12px;padding:7px}.candidate-docs{grid-template-columns:1fr!important}#approve-checkpoints{grid-template-columns:1fr}}@media(max-width:500px){main{padding:0 16px 30px}.intro{padding:26px}.intro-note{display:none}.chapter-grid{grid-template-columns:1fr}.search,.search input{width:100%}.chapter{padding:20px}.logo img{width:150px}.question-row{align-items:start;flex-direction:column}.reader-heading .eyebrow{max-width:230px}.reader-layout{scroll-behavior:auto}.write-tools{position:static}.source-page{border-radius:0}footer{gap:15px;flex-direction:column}}

.typeset-question{background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:28px}.typeset-question h3{border-bottom:1px solid var(--line);padding-bottom:18px}.typeset-part{display:grid;grid-template-columns:30px minmax(0,1fr) 30px;gap:12px;margin:24px 0;align-items:baseline}.typeset-part strong{font-size:14px}.part-mark{font-size:13px;color:var(--muted);text-align:right}.typeset-question .katex{font-size:1.12em}.typeset-question .katex-display{max-width:100%;overflow:auto}

.original-diagram{margin:18px auto 28px;padding:12px;background:#fff;border:1px solid var(--line);border-radius:6px;max-width:600px}.source-diagram{display:block;max-width:100%;height:auto;margin:auto}

.set-picker,.set-controls{background:var(--sage);border:1px solid #bccdc7;padding:12px 18px}.set-picker{border-radius:8px;margin:18px 0}.set-picker label{margin-right:12px}.set-controls{flex:none}.set-controls .review-actions{margin-top:6px;gap:6px}.set-controls button{font-size:13px;padding:6px 10px}.set-controls p{margin:6px 0 0}#set-status{font-weight:700}#set-timer{float:right;font-weight:700}.scheme-side{overflow:auto;overscroll-behavior:contain;padding:18px;background:#edf1ef;min-width:0}.reader-layout.with-scheme{grid-template-columns:1fr 1fr 1fr}.reader-layout.working-hidden{grid-template-columns:1fr}.reader-layout.working-hidden.with-scheme{grid-template-columns:1fr 1fr}.working-side{resize:horizontal}.working-side.floating{position:fixed;right:28px;top:180px;width:45vw;height:65vh;max-width:95vw;min-width:260px;border:2px solid var(--blue);box-shadow:0 10px 30px #293f4c44;z-index:5;resize:both;background:#f6f2e8}.floating .working-heading{cursor:move;touch-action:none}.reader-layout:has(.floating){grid-template-columns:1fr}.reader-layout.with-scheme:has(.floating){grid-template-columns:1fr 1fr}.writing-sheet canvas{touch-action:pan-x pan-y pinch-zoom}.scheme-side .working-heading{position:sticky;top:-18px;background:#edf1ef;padding:8px 0;z-index:2}.scheme-side img{max-width:none}#question-images,#scheme-images,#writing-sheets{transform-origin:top left}.reader-layout>section{min-height:0}@media(max-width:850px){.reader-layout{display:flex;overflow:hidden;flex-direction:column}.reader-layout>section{flex:1;overflow:auto;min-height:150px}.set-controls button{font-size:12px;padding:5px}.set-controls{max-height:180px;overflow:auto}.working-side.floating{width:90vw;top:150px;right:5vw}.scheme-side{position:absolute;inset:240px 8px 8px;z-index:4;border:2px solid var(--blue)}}

.reader-layout{grid-template-columns:minmax(180px,var(--question-width,50%)) 8px minmax(180px,1fr)}.reader-layout.with-scheme{grid-template-columns:minmax(180px,var(--question-width,33%)) 8px minmax(180px,1fr) 8px minmax(180px,var(--scheme-width,33%))}.pane-divider{background:#c3d0d3;cursor:col-resize;touch-action:none;position:relative}.pane-divider:after{content:"";position:absolute;top:45%;left:2px;width:4px;height:38px;background:var(--blue);border-radius:3px}.working-hidden #question-divider,.reader-layout:has(.floating) #question-divider{display:none}.reader-layout.working-hidden{grid-template-columns:1fr}.reader-layout.working-hidden.with-scheme,.reader-layout.with-scheme:has(.floating){grid-template-columns:1fr 8px 1fr}.reader-layout:has(.floating){grid-template-columns:1fr}@media(max-width:850px){.pane-divider{display:none!important}}

.year-picker{position:relative;min-width:210px;max-width:380px;background:var(--paper);border:1px solid #b6c4c9;border-radius:5px;align-self:end}.year-picker summary{padding:9px 12px;cursor:pointer;font-size:15px}.year-options{position:absolute;top:100%;left:0;z-index:6;background:var(--paper);border:1px solid #b6c4c9;border-radius:6px;box-shadow:0 8px 22px #293f4c22;width:290px;padding:14px}.year-options p{font-size:14px;margin:0}.year-options button{font-size:13px;padding:4px 10px}#year-choices{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:14px;max-height:240px;overflow:auto}#year-choices label{display:flex;align-items:center;gap:6px;font-size:15px}.year-options .review-actions{margin-top:8px}

.year-range{padding:12px 2px 16px}.year-range-values{display:flex;justify-content:space-between;font-size:14px}.year-range-values label{font-size:14px}.year-range-track{position:relative;height:38px;margin:4px 10px 0;--start:0%;--end:100%}.year-range-track:before{content:"";position:absolute;left:0;right:0;top:17px;height:4px;border-radius:4px;background:linear-gradient(to right,#c9d2d1 var(--start),var(--blue) var(--start),var(--blue) var(--end),#c9d2d1 var(--end))}.year-range-track input[type=range]{position:absolute;left:0;top:0;width:100%;height:38px;margin:0;padding:0;border:0;background:transparent;appearance:none;-webkit-appearance:none;pointer-events:none}.year-range-track input[type=range]::-webkit-slider-runnable-track{height:4px;background:transparent}.year-range-track input[type=range]::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;pointer-events:auto;width:18px;height:18px;margin-top:-7px;border:2px solid var(--blue);border-radius:50%;background:var(--paper);cursor:ew-resize}.year-range-track input[type=range]::-moz-range-track{height:4px;background:transparent}.year-range-track input[type=range]::-moz-range-thumb{pointer-events:auto;width:16px;height:16px;border:2px solid var(--blue);border-radius:50%;background:var(--paper);cursor:ew-resize}.individual-years{border-top:1px solid var(--line);padding-top:8px}.individual-years>summary{font-size:13px!important;padding:4px 0!important}.year-options{width:300px}.year-picker>summary{white-space:normal}

/* Ezeemath study workspace: paper, navigation and working remain distinct. */
.workspace-body{display:grid;grid-template-columns:210px minmax(0,1fr);flex:1;min-height:0;overflow:hidden}.workspace-body>.reader-layout{min-width:0;min-height:0}.practice-navigation{background:#fbfaf6;border-right:1px solid #d9dedb;padding:22px 14px;overflow:auto;overscroll-behavior:contain}.navigation-heading{padding:0 8px 16px;border-bottom:1px solid var(--line)}.navigation-heading .eyebrow{font-size:10px;letter-spacing:1.5px}.navigation-heading h3{font-size:17px;line-height:1.45;margin:0}.navigation-heading p.small{margin-bottom:0}.practice-navigation nav{display:flex;flex-direction:column;gap:8px;margin:18px 0}.set-navigation-item{display:flex;gap:12px;align-items:center;text-align:left;border:1px solid transparent;background:transparent;color:var(--ink);padding:10px 8px;border-radius:7px;font-weight:400;min-width:0}.set-navigation-item.selected{background:#edf2ef;border-color:#6b8794;box-shadow:inset 3px 0 var(--blue)}.question-miniature{display:flex;flex-direction:column;gap:5px;justify-content:center;width:36px;min-width:36px;height:47px;padding:8px 6px;background:white;border:1px solid #d4d9d6;border-radius:2px;box-shadow:0 2px 4px #293f4c0b}.question-miniature span{height:2px;background:#cfd7d4;width:100%}.question-miniature span:nth-child(2){width:70%}.question-miniature span:nth-child(4){width:80%}.question-navigation-label{display:flex;flex-direction:column;gap:3px;min-width:0}.question-navigation-label strong{font-size:14px;font-weight:700}.question-navigation-label small{font-size:11px;color:var(--muted);line-height:1.5}.question-navigation-label .saved-label{color:#3a6c58}.navigation-hint{font-size:12px;color:var(--muted);line-height:1.8;border-top:1px solid var(--line);padding:16px 8px}.workspace-top-actions{display:flex;gap:8px;align-items:center}.reader-heading{background:#fbfaf6;color:var(--ink);border-bottom:1px solid #d5dcd7;padding:12px 20px}.reader-heading h2{font-size:18px}.reader-heading .eyebrow{color:var(--muted);letter-spacing:1.4px}.reader-heading .outline{color:var(--blue);border-color:#bbc9cc;padding:7px 12px;font-size:12px}.set-controls{background:#f6f5ef;border:0;border-bottom:1px solid #d5dcd7;padding:10px 18px}.set-controls .review-actions{gap:5px}.set-controls button{padding:5px 9px;font-size:12px}.set-controls #set-status{font-size:14px}.set-controls #set-note{font-size:12px;color:var(--muted)}.question-side{background-color:#eae9e2;background-image:linear-gradient(#526c7c06 1px,transparent 1px),linear-gradient(90deg,#526c7c06 1px,transparent 1px);background-size:24px 24px;padding:24px}.paper-meta{font-size:12px;color:var(--muted);margin-bottom:14px}.typeset-question{background:#fff;border:1px solid #dedfd8;border-radius:3px;padding:30px;box-shadow:0 2px 7px #293f4c0a;font-size:18px;line-height:1.9}.typeset-question h3{font-size:20px;line-height:1.5;margin-bottom:24px;padding-bottom:18px}.working-side{background:#f5f4ef;padding:22px}.working-heading h3{font-size:19px}.write-tools{background:#f5f4ef}.writing-sheet{border-radius:3px;box-shadow:0 2px 6px #293f4c0b}.writing-sheet canvas{background-image:radial-gradient(#526c7c16 .7px,transparent .7px);background-size:18px 18px}.sheet-label{background:#fdfdf9}.working-side.floating{background:#f5f4ef;border:1px solid #9aafb6;border-radius:6px}.pane-divider{background:#d5dedb}.pane-divider:after{background:#8b9fa7}.scheme-side{background:#f1f3ef}.scheme-side .working-heading{background:#f1f3ef}.source-page{border-radius:3px}.question-side .badge{font-size:11px;background:#fffdf8}@media(max-width:1100px){.workspace-body{grid-template-columns:170px minmax(0,1fr)}.practice-navigation{padding:18px 8px}.question-miniature{display:none}.typeset-question{padding:22px}.question-side,.working-side{padding:18px}}@media(max-width:850px){.workspace-body{display:flex;flex-direction:column}.practice-navigation{padding:0 10px;max-height:86px;overflow:auto;border-right:0;border-bottom:1px solid var(--line);flex:none}.navigation-heading,.navigation-hint{display:none}.practice-navigation nav{flex-direction:row;margin:8px 0;gap:6px;width:max-content}.set-navigation-item{min-width:125px;padding:7px 10px}.question-navigation-label strong{font-size:12px}.question-navigation-label small{font-size:10px}.workspace-body>.reader-layout{flex:1}.workspace-top-actions{gap:5px}.reader-heading .outline{font-size:11px;padding:6px 8px}.reader-heading h2{font-size:15px}.reader-heading .eyebrow{font-size:9px}.typeset-question{font-size:17px}.set-controls{padding:8px 12px}}@media(max-width:500px){.reader-heading{gap:8px;padding:10px}.reader-heading h2{font-size:13px}.workspace-top-actions{flex-direction:column;gap:4px}.reader-heading .eyebrow{max-width:190px}.typeset-question{padding:18px}.set-controls #set-note{font-size:11px}}

/* Continuous paper with quiet focus and a floating notebook. */
.question-side>.paper-meta{display:none}.set-cover{background:#fff;border:1px solid #dfdfd7;border-radius:3px;padding:38px;margin:0 0 26px;box-shadow:0 2px 7px #293f4c09}.set-cover h2{font-size:34px;line-height:1.4;margin:22px 0 12px;max-width:600px}.set-cover .eyebrow{font-size:10px;letter-spacing:2px}.cover-metadata{display:flex;gap:24px;border-top:1px dashed #d7dcd5;border-bottom:1px dashed #d7dcd5;padding:18px 0;margin:26px 0;color:var(--muted);font-size:14px}.feed-question{scroll-margin-top:22px;background:#fff;border:1px solid #dedfd8;border-radius:3px;box-shadow:0 2px 7px #293f4c09;margin:0 0 24px;padding:20px 26px 28px;opacity:.66;transition:opacity 220ms ease,box-shadow 220ms ease,border-color 220ms ease}.feed-question.is-current,.feed-question:focus-within,.feed-question:hover{opacity:1}.feed-question.is-current{border-color:#afc0c3;box-shadow:0 3px 14px #293f4c10}.feed-card-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;font-size:14px}.feed-card-heading .text-button{font-size:12px;padding:4px 0;white-space:nowrap}.feed-source{font-size:11px;color:var(--muted);margin:8px 0 20px}.feed-card-body .typeset-question{border:0;box-shadow:none;padding:0;border-radius:0}.feed-card-body .typeset-question h3{font-size:18px;margin-bottom:20px;padding-bottom:14px}.feed-card-body .source-page{border:0;box-shadow:none}.question-side{scroll-behavior:smooth}.set-navigation-item{transition:background-color 180ms ease,border-color 180ms ease,box-shadow 180ms ease}.working-side.floating{top:104px;right:24px;width:36vw;min-width:300px;height:calc(100dvh - 140px);max-height:calc(100dvh - 90px);box-shadow:0 8px 30px #293f4c24;border-radius:8px;z-index:8}.working-side.floating .working-heading{border-bottom:1px solid var(--line);padding-bottom:12px}.working-heading h3{margin:0 0 4px}.notebook-save-status{font-size:11px;color:var(--muted);margin:8px 0}.working-side.floating .write-tools{top:-22px;position:relative;padding:10px 0 0;margin-bottom:0}.working-side.floating .write-tools button{font-size:11px;padding:5px 8px}.working-side.floating .write-tools label{font-size:11px}.working-side.floating .write-tools select{font-size:12px}.working-side.floating .review-actions button{font-size:12px;padding:7px 10px}.reader-layout:has(.floating) .question-side{padding-right:calc(36vw + 44px)}.reader-layout.with-scheme:has(.floating) .question-side{padding-right:24px}.reader-layout.working-hidden .question-side{padding-right:24px}.workspace-top-actions button{font-size:11px!important}.working-side[hidden]{display:none!important}.reader-layout:has(.floating[hidden]) .question-side{padding-right:24px}@media(min-width:1600px){.working-side.floating{width:32vw}.reader-layout:has(.floating) .question-side{padding-right:calc(32vw + 44px)}}@media(max-width:1100px){.reader-layout:has(.floating) .question-side{padding-right:24px}.working-side.floating{width:46vw}.feed-question{padding:18px 22px}.set-cover{padding:28px}.set-cover h2{font-size:28px}}@media(max-width:850px){.working-side.floating{width:90vw;right:5vw;top:160px;height:65dvh;min-width:260px}.workspace-top-actions{flex-wrap:wrap;justify-content:flex-end;max-width:250px}.reader-heading .outline{padding:5px 7px}.set-cover h2{font-size:25px}.set-cover{padding:24px}.feed-question{padding:18px}.cover-metadata{gap:14px;font-size:12px}.feed-question{opacity:.82}}@media(prefers-reduced-motion:reduce){.question-side{scroll-behavior:auto}.feed-question,.set-navigation-item{transition:none}.feed-question{opacity:1}}

#question-dialog{overflow:hidden}.intro{background:transparent;color:var(--ink);padding:30px 0 36px;border-bottom:1px solid var(--line);border-radius:0;grid-template-columns:1fr;gap:0}.intro-note{display:none}.intro h1{font-size:36px;line-height:1.3;letter-spacing:-.8px;margin:12px 0 16px}.intro .lead{color:var(--muted);font-size:16px}.intro-tags{gap:8px;margin-top:20px;font-size:12px}.intro-tags span{background:#eef0e9;border:1px solid #dce2da;border-radius:4px;padding:4px 9px}.intro-tags span+span{border-left:1px solid #dce2da;padding-left:9px}header{border-bottom:1px solid var(--line);padding-top:18px;padding-bottom:18px}.logo img{width:160px}.chapter{background:#fff;border-radius:5px;padding:22px;box-shadow:0 1px 4px #293f4c05;transition:border-color 180ms ease,box-shadow 180ms ease}.chapter:hover,.chapter:has(details[open]){border-color:#9eb3ba;box-shadow:0 3px 12px #293f4c0b}.chapter h3{font-size:20px}.chapter-grid{gap:16px}.question-row{background:#fff;border-radius:4px}.plan{background:#fff;border-radius:5px}.section-heading h2{font-size:26px}.nav-button{border-radius:4px}.nav-button.active{background:#eaf0ec}@media(max-width:850px){.intro{padding:24px 0}.intro h1{font-size:29px}.logo img{width:140px}}@media(prefers-reduced-motion:reduce){.chapter{transition:none}}
#question-dialog{overflow:clip;overscroll-behavior:none}.reader-heading{position:relative;z-index:10}
@media(max-width:500px){.workspace-top-actions{display:grid;grid-template-columns:repeat(2,max-content);gap:4px;max-width:none}.workspace-top-actions .outline{font-size:10px!important;padding:5px 6px}.reader-heading>div:first-child{min-width:0}.reader-heading .eyebrow{font-size:8px}.working-side.floating{top:150px;height:65dvh}}

.question-miniature.real-preview{position:relative;width:42px;min-width:42px;height:56px;padding:0;overflow:hidden}.question-miniature.real-preview>.typeset-question{position:absolute;left:3px;top:4px;width:480px;font-size:18px;transform:scale(.073);transform-origin:top left;box-shadow:none;border:0;padding:0}.question-miniature.real-preview>.source-page{width:100%;height:100%;object-fit:contain;border:0;margin:0}.question-miniature.real-preview .typeset-question h3{font-size:18px}.question-miniature.real-preview .typeset-question p{font-size:18px}.question-miniature.real-preview figure{margin:12px 0}

.ink-selection-tools{display:flex;flex-wrap:wrap;gap:6px;padding:8px 12px;background:#f5f3eb}.ink-selection-tools button{padding:6px 10px;font-size:13px}.ink-selection-tools details{font-size:13px;flex-basis:100%}.ink-selection-tools details p{max-width:55ch}.writing-sheet canvas:focus-visible{outline:2px solid #789b9a;outline-offset:-2px}

/* Continuous notebook: no page cards or manual page changes. */
#writing-sheets{background:#fff;display:block;padding:0;gap:0;position:relative}.writing-sheet{position:relative;margin:0!important;padding:0!important;border:0!important;border-radius:0!important;box-shadow:none!important;line-height:0}.writing-sheet .sheet-label{display:none}.writing-sheet canvas{position:relative;z-index:1;display:block;width:100%;height:auto;background-color:transparent!important}.notebook-cutout{position:absolute;z-index:0;object-fit:fill;pointer-events:none}.question-crop-box{z-index:99999;border:2px dashed #526c7c;background:#526c7c22;pointer-events:none}.cutout-mode .feed-card-body img{cursor:crosshair;touch-action:none;user-select:none}.notebook-zoom{font-variant-numeric:tabular-nums}

.working-side .write-tools{position:sticky;top:0;z-index:5;border-bottom:1px solid #d9dedb;padding-block:8px}#quick-save-working{white-space:nowrap}

.writing-sheet{background:transparent!important}.notebook-grid-layer{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}.grid-corner{position:absolute;z-index:4;transform:translate(-50%,-50%);width:16px;height:16px;min-width:0;padding:0;border:2px solid #526c7c;background:#fffdf6;border-radius:3px;touch-action:none;cursor:nwse-resize}.grid-corner[aria-label$="ne"],.grid-corner[aria-label$="sw"]{cursor:nesw-resize}
.working-side.floating .write-tools{position:sticky;top:0;z-index:5}

.browse-question{background:#fff;border:1px solid #d6dddd;border-radius:8px;padding:24px;margin:18px 0;content-visibility:auto;contain-intrinsic-size:500px}.browse-question-body{min-height:120px;margin-top:18px}.browse-question-body img{display:block;max-width:100%;height:auto}.browse-question .check{gap:12px;cursor:pointer}.set-picker{position:sticky;top:0;z-index:4;box-shadow:0 4px 18px #273e4a0b}#upload-dialog{max-width:620px}#upload-file-list{overflow-wrap:anywhere}#set-upload-files:empty{display:none}

.practice-ai-toggle{display:flex;align-items:center;gap:7px;font-size:13px;padding:8px 10px;border:1px solid #c6d2d4;border-radius:6px;background:#edf3f1}.upload-ai-option{margin:18px 0;padding:16px;border:1px solid #c6d2d4;border-radius:8px;background:#edf3f1}.upload-ai-option p{margin:8px 0 0}

.nav-question-row{display:flex;align-items:center;gap:8px;flex-shrink:0}.nav-question-row>input{width:18px;height:18px;flex-shrink:0;accent-color:#526f7f}.nav-question-row .set-navigation-item{flex:1;min-width:140px}.nav-question-row input:disabled{opacity:.55}#set-navigation{overflow:auto;overscroll-behavior:contain;scroll-behavior:smooth}@media(max-width:1100px){.nav-question-row{min-width:185px}}

.practice-navigation{display:flex;flex-direction:column;min-height:0}.practice-navigation #set-navigation{flex:1;min-height:0;width:100%;max-height:100%;margin-bottom:8px}.nav-question-row{width:100%}@media(max-width:850px){.practice-navigation{max-height:112px}.practice-navigation .navigation-heading{display:block;margin:0;padding:3px 4px}.navigation-heading h3,.navigation-heading .eyebrow{display:none}.navigation-heading p{margin:0;font-size:11px}.practice-navigation #set-navigation{min-height:64px;margin:2px 0 5px;flex:none}.nav-question-row{width:auto;min-width:185px}}

@media(min-width:851px){.nav-question-row{min-width:0}.nav-question-row .set-navigation-item{min-width:0;max-width:100%;padding:8px}.question-navigation-label{min-width:0}.question-navigation-label small{overflow-wrap:anywhere}}
/* Tablet notebook: browser gestures never compete with ink. */
#writing-sheets,.writing-sheet,.writing-sheet canvas{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent;touch-action:none!important}.writing-sheet canvas:focus,.writing-sheet canvas:focus-visible{outline:none!important;box-shadow:none!important}.writing-sheet canvas{background-image:none!important}#writing-sheets{background-color:#fff;background-image:radial-gradient(#526c7c20 .7px,transparent .7px);background-size:18px 18px;min-height:1200px}.working-side{resize:none!important;isolation:isolate}.notebook-chrome{position:sticky;top:-22px;z-index:6;background:#f5f4ef;padding:8px 0 6px;border-bottom:1px solid var(--line)}.notebook-chrome .working-heading{padding:0!important;border:0!important;min-height:32px;gap:6px}.notebook-caption{display:flex;align-items:baseline;flex-wrap:wrap;gap:6px;font-size:14px;min-width:0}.notebook-window-actions{display:flex;gap:4px;flex-shrink:0}.notebook-window-actions button{font-size:12px;padding:5px 8px;min-height:32px;white-space:nowrap}#notebook-resize{touch-action:none;cursor:nwse-resize}.notebook-save-status{font-size:11px;margin:3px 0;min-height:1em}.working-side .notebook-chrome .write-tools{position:static!important;display:flex;align-items:center;gap:5px;margin:0;padding:4px 0!important;border:0;flex-wrap:wrap}.notebook-chrome .write-tools label{font-size:11px}.notebook-chrome .primary-tool,.notebook-chrome .primary-colour{font-size:0!important}.notebook-chrome .primary-tool select{display:inline-block;font-size:12px;max-width:128px}.notebook-chrome .write-tools button{font-size:12px;padding:5px 8px;min-height:32px}.notebook-chrome .write-tools input[type=color]{height:32px;width:32px}.notebook-more{border:0!important;padding:0!important;font-size:12px}.notebook-more>summary{cursor:pointer;list-style:none;border:1px solid #b6c4c9;border-radius:5px;padding:5px 8px;min-height:32px;color:var(--blue);font-weight:700}.notebook-more>summary:after{content:' ▾'}.notebook-more[open]{flex-basis:100%}.notebook-more[open]>summary:after{content:' ▴'}.notebook-more>div{display:flex;gap:8px;align-items:center;flex-wrap:wrap;padding:8px;background:#e9f0ee;margin-top:5px;border-radius:5px}.notebook-more .ink-selection-tools{margin:5px 0 0}.notebook-more .small{font-size:11px;flex-basis:100%;margin:0}.notebook-more .check{display:flex;align-items:center;gap:5px}.notebook-more details{font-size:12px}.notebook-more details p{line-height:1.5}.working-side:not(.floating) .notebook-chrome{top:-22px}.reader-layout:has(.floating) .question-side{padding-right:calc(var(--notebook-width,36vw) + 44px)}.reader-layout.working-hidden .question-side,.reader-layout:has(.floating[hidden]) .question-side{padding-right:24px}@media(max-width:1100px){.reader-layout:has(.floating) .question-side{padding-right:24px}}@media(pointer:coarse){.notebook-window-actions button,.notebook-chrome .write-tools button,.notebook-more>summary,.notebook-chrome select{min-height:38px}.notebook-chrome .write-tools{gap:6px}.working-side.floating{min-width:280px}.notebook-caption{font-size:13px}.notebook-window-actions{gap:3px}}

.reader-layout.notebook-overlay:has(.floating) .question-side{padding-right:24px}

/* Direct checkpoint practice: readable controls and a fixed five-question batch. */
body{font-size:18px}button,input,select,textarea{font-size:16px} .small,.muted.small,.badge,.chapter p,.chapter summary,.checkpoint-button small,.feed-source,.navigation-progress,.navigation-hint{font-size:15px}.checkpoint-button{font-size:18px;line-height:1.55}.chapter h3{font-size:24px}.reader-heading h2{font-size:22px}.eyebrow{font-size:12px}.feed-card-heading{font-size:17px}.feed-card-heading button{font-size:16px}.typeset-question{font-size:21px;line-height:1.8}.set-navigation-item strong{font-size:16px}.set-navigation-item small{font-size:14px}.workspace-top-actions button{font-size:15px!important}.notebook-chrome button,.notebook-chrome select,.notebook-chrome label,.notebook-more summary{font-size:15px!important}.commit-hint{margin:0;padding:10px 20px;background:#eef3f6;font-size:16px;line-height:1.5;flex-shrink:0}.workspace-filters{padding:6px 20px;flex-shrink:0;font-size:16px}.workspace-filters .filters{display:flex;gap:20px;flex-wrap:wrap;padding:12px 0}.workspace-filters summary{cursor:pointer}.workspace-top-actions .batch-ready{background:#245ad6!important;color:white!important;border-color:#245ad6!important}.workspace-top-actions button:disabled{background:#e3e7eb!important;color:#747e88!important;border-color:#d4dae0!important;opacity:1}.workspace-top-actions{gap:6px}.nav-question-row input{width:22px;height:22px;flex-shrink:0;accent-color:#245ad6}
@media(max-width:850px){.reader-heading h2{font-size:18px!important}.reader-heading .eyebrow{font-size:12px!important}.workspace-top-actions{max-width:none;display:flex;flex-wrap:wrap}.workspace-top-actions button{font-size:15px!important;min-height:36px}.reader-heading{gap:10px;padding:12px!important}.set-navigation-item strong{font-size:15px!important}.set-navigation-item small{font-size:14px!important}.typeset-question{font-size:20px}.commit-hint{font-size:15px;padding:8px 14px}.workspace-filters{padding:5px 14px}.feed-source{font-size:15px!important}}

#set-timer{font-size:18px;font-weight:700;background:#edf2fb;color:#234e9e;padding:7px 12px;border-radius:5px;white-space:nowrap}#set-timer.time-up{color:#a12c28;background:#fff0e9}#timed-start-dialog{max-width:560px;font-size:18px}#timed-start-dialog::backdrop{background:#14293888}.feed-card-heading .text-button{font-size:16px}.cover-metadata{font-size:16px}.navigation-heading .eyebrow,.set-cover .eyebrow{font-size:12px}

#assignment-basket{position:fixed;bottom:16px;left:50%;transform:translateX(-50%);z-index:30;background:#fff;border:1px solid #b5c3ce;box-shadow:0 6px 30px #20384833;padding:12px 18px;border-radius:8px;display:flex;align-items:center;gap:14px;max-width:94vw;width:max-content}#assignment-basket[hidden]{display:none}#assignment-builder-dialog{width:min(900px,95vw);max-height:90dvh;overflow:auto;font-size:18px}#assignment-selected-list{max-height:30dvh;overflow:auto}.assignment-selected-row{display:flex;align-items:center;gap:8px;padding:8px;border-bottom:1px solid var(--line)}.assignment-selected-row>span{flex:1}.assignment-recipients{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:8px;max-height:220px;overflow:auto}.assignment-recipients label{padding:7px;background:#eef2f2}.assignment-question-choice{background:#edf3ff;border:1px solid #c5d5f3;border-radius:5px;padding:8px 12px;margin-bottom:14px;font-size:16px}.assignment-question-choice input{width:22px;height:22px;accent-color:#245ad6}#assignment-dashboard{font-size:15px}#practice-assignment-form>label{display:block;margin:14px 0}#assignment-create-status{padding:12px;background:#edf3f6}@media(max-width:600px){#assignment-basket{flex-wrap:wrap;gap:7px}#assignment-basket button{font-size:15px;padding:7px}.assignment-selected-row{flex-wrap:wrap}.assignment-selected-row>span{flex-basis:100%}}

#practice-assignment-form>label:not(.check)>input{display:block;width:100%;margin-top:6px}#practice-assignment-form .check,#assignment-builder-dialog .assignment-recipients label{font-size:17px}#practice-assignment-form input[type=checkbox]{width:22px;height:22px;accent-color:#245ad6;flex-shrink:0}.assignment-mode-hint{display:none;margin:0;padding:10px 20px;background:#edf3ff;font-size:16px}.assignment-nav-choice{display:none}.assignment-building #question-dialog .assignment-mode-hint{display:block}.assignment-building #question-dialog #commit-hint,.assignment-building #question-dialog #workspace-finish,.assignment-building #question-dialog #upload-set,.assignment-building #question-dialog .practice-ai-toggle,.assignment-building #question-dialog #navigation-progress,.assignment-building #question-dialog .nav-question-row>input:not(.assignment-nav-choice){display:none!important}.assignment-building #question-dialog .assignment-nav-choice{display:block}.assignment-building #question-dialog .question-side{padding-bottom:110px}

#analysis-results-dialog{width:min(1500px,96vw);max-width:none;height:min(920px,94dvh);max-height:96dvh;padding:0;overflow:hidden}#analysis-results-dialog[open]{display:flex;flex-direction:column}.analysis-heading{display:flex;justify-content:space-between;gap:20px;padding:20px 24px;border-bottom:1px solid var(--line);flex-shrink:0}.analysis-heading h2{font-size:25px}.analysis-heading p{margin:4px 0}.analysis-heading button{align-self:start}.analysis-layout{display:grid;grid-template-columns:210px minmax(0,1fr);min-height:0;flex:1}#analysis-question-list{display:flex;flex-direction:column;overflow:auto;padding:12px;border-right:1px solid var(--line);gap:8px}.analysis-question{display:flex;flex-direction:column;text-align:left;background:var(--paper);color:var(--ink);padding:12px;gap:4px}.analysis-question span,.analysis-question small{font-size:14px}.analysis-question[aria-current=true]{background:var(--sage);box-shadow:inset 4px 0 var(--blue)}.analysis-detail{overflow:auto;padding:16px 22px;min-width:0}.analysis-tabs{display:flex;gap:8px;position:sticky;top:0;background:var(--paper);padding:8px 0;z-index:2}.analysis-tabs button{background:transparent;color:var(--ink)}.analysis-tabs button[aria-selected=true]{background:#245ad6;color:white;border-color:#245ad6}#analysis-panes{display:grid;grid-template-columns:1fr 1fr;gap:20px}.analysis-pane{min-width:0;background:white;padding:16px;border:1px solid var(--line);border-radius:8px}.analysis-pane[data-pane=scheme]{display:none}#analysis-panes[data-tab=scheme]{grid-template-columns:1fr 1fr 1fr}#analysis-panes[data-tab=scheme] .analysis-pane[data-pane=scheme]{display:block}.analysis-ink{display:block;width:100%;background:#fff;border:1px solid var(--line);margin-bottom:12px}.analysis-typed{white-space:pre-wrap}.analysis-pane img{width:100%;height:auto}.analysis-pane p{font-size:17px;line-height:1.65}.analysis-pane h3{font-size:23px}.history-card>button{margin:6px 10px 0 0}#batch-analysis-status:empty{display:none}
@media(max-width:1000px){#analysis-results-dialog{width:100vw;height:100dvh;max-height:100dvh;border-radius:0}.analysis-layout{grid-template-columns:1fr;grid-template-rows:auto minmax(0,1fr)}#analysis-question-list{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line)}.analysis-question{min-width:175px;flex-shrink:0}.analysis-question span{max-width:200px}.analysis-heading{padding:14px;gap:10px}.analysis-heading h2{font-size:21px}.analysis-heading .eyebrow{font-size:10px}.analysis-detail{padding:10px 14px}.analysis-tabs button{padding:9px 12px;font-size:16px}#analysis-panes,#analysis-panes[data-tab=scheme]{display:block}#analysis-panes .analysis-pane{display:none}#analysis-panes[data-tab=working] .analysis-pane[data-pane=working],#analysis-panes[data-tab=feedback] .analysis-pane[data-pane=feedback],#analysis-panes[data-tab=scheme] .analysis-pane[data-pane=scheme]{display:block}}
#analysis-question-list{order:0;min-height:0}.analysis-detail{order:0}@media(max-width:1000px){#analysis-question-list{grid-row:1;grid-column:1;max-height:145px;align-items:stretch}.analysis-detail{grid-row:2;grid-column:1}.analysis-question{padding:10px 12px}}

.notebook-tool-icons{display:flex;gap:3px;align-items:center}.notebook-tool-icons select[hidden]{display:none!important}.notebook-tool-icons .tool-icon{width:36px;height:36px;min-width:36px;padding:7px;position:relative;display:inline-flex;align-items:center;justify-content:center;background:transparent}.tool-icon svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linejoin:round;stroke-linecap:round}.notebook-tool-icons .tool-icon[aria-pressed=true]{background:var(--blue);color:var(--cream)}.tool-tooltip{display:none;position:absolute;top:calc(100% + 7px);left:0;background:var(--ink);color:white;padding:5px 9px;border-radius:5px;z-index:50;font-size:13px;white-space:nowrap;pointer-events:none}.tool-icon:hover .tool-tooltip,.tool-icon:focus-visible .tool-tooltip{display:block}.question-tools{margin:10px 0 20px}.question-signals{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.question-signals svg{width:21px;height:21px;vertical-align:middle;stroke:currentColor;stroke-width:1.3;stroke-linejoin:round;fill:currentColor}.teacher-star-badge{display:inline-flex;gap:2px;color:#98a3af;filter:drop-shadow(0 1px 1px #5d667444)}.teacher-star-badge svg{fill:#c1c8d0;stroke:#778493}.teacher-lightning-badge{color:#e5ae16;filter:drop-shadow(0 0 3px #f5cc53);animation:special-glow 3s ease-in-out infinite}.teacher-lightning-badge svg{fill:#f4cf54;stroke:#bd8711}.student-signal{display:inline-flex;gap:3px;align-items:center;padding:5px 8px!important;min-height:34px;color:var(--blue)!important;background:#f6f2e8!important;border-color:#c9d2d3!important}.student-signal svg{fill:transparent}.student-signal[aria-pressed=true] svg{fill:currentColor}.question-signals sub{font-size:13px;line-height:1;position:relative;bottom:-4px}.community-signals{display:inline-flex;gap:12px;color:var(--blue);font-size:14px}.community-signals>span{display:inline-flex;gap:2px;align-items:center}.combo-badge,.attempt-badge{font-size:14px;padding:4px 9px;border-radius:5px;background:var(--sage);color:var(--ink)}.attempt-badge{background:#f6f2e8;color:var(--blue)}.quick-curation{margin-top:10px;border:1px solid var(--line);border-radius:6px;padding:8px 12px;background:#fbfaf5}.quick-curation>summary{font-size:15px;font-weight:700;cursor:pointer}.quick-curation[open]{display:flex;flex-direction:column;gap:10px}.quick-curation label{font-size:15px}.quick-curation input,.quick-curation select{font-size:16px;width:100%}.quick-curation .review-actions{flex-wrap:wrap;gap:8px}.quick-curation button{font-size:14px;padding:7px 11px}.checkpoint-link-chips{display:flex;flex-wrap:wrap;gap:7px}.checkpoint-link-chip{display:inline-flex;align-items:center;gap:6px;padding:3px 7px;background:var(--sage);border-radius:5px;font-size:13px}.checkpoint-link-chip button{border:0;padding:2px 6px!important;background:transparent;color:var(--ink)}.curation-status{min-height:1.5em}.previous-work-notice{margin:5px 0;padding:7px 10px;border-radius:5px;background:var(--sage);font-size:14px;color:var(--ink)}.previous-work-notice[hidden]{display:none}@keyframes special-glow{50%{filter:drop-shadow(0 0 6px #e6ba35)}}@media(prefers-reduced-motion:reduce){.teacher-lightning-badge{animation:none}}@media(max-width:600px){.notebook-tool-icons .tool-icon{width:34px;min-width:34px;height:36px;padding:6px}.question-signals{gap:7px}.combo-badge,.attempt-badge{font-size:14px}}

/* First-use feedback and learner entry paths. */
#library-status{margin:1rem 0;color:var(--muted,#536d7b)}.skeleton{min-height:200px;background:linear-gradient(100deg,#e9e9e2 20%,#faf9f4 45%,#e9e9e2 70%);background-size:220% 100%;animation:checkpoint-loading 1.8s ease-in-out infinite}.auth-paths{display:grid;gap:.6rem;grid-template-columns:repeat(3,1fr);margin:1rem 0}.auth-paths button{text-align:left}.auth-paths small{font-weight:400}#clear-search{margin-top:.4rem}@keyframes checkpoint-loading{to{background-position:-220% 0}}@media(max-width:600px){.auth-paths{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){.skeleton{animation:none}}
/* Practice workspace: reading, split writing and notebook-first modes. */
.chapters{align-items:start}.chapter:has(details[open]){grid-column:1/-1}.chapter details[open]{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px}.chapter details>summary{grid-column:1/-1}
.reader-heading{align-items:center;gap:12px}.reader-heading>div:first-child{min-width:0;flex:1}.reader-heading h2{font-size:18px!important;margin:0}.reader-heading .eyebrow{display:none}.workspace-top-actions{max-width:none;flex-wrap:wrap;justify-content:flex-end}.workspace-top-actions button{font-size:14px!important;min-height:40px}.layout-switch{display:flex;gap:2px}.layout-switch [aria-pressed=true]{background:var(--blue);color:white}.workspace-more{position:relative}.workspace-more>summary{cursor:pointer;padding:8px 12px;border:1px solid #bbc9cc;border-radius:6px}.workspace-more>div{position:absolute;right:0;top:100%;z-index:20;width:250px;display:flex;flex-direction:column;gap:8px;background:#fffdf6;padding:14px;box-shadow:0 4px 20px #293f4c30;border:1px solid var(--line)}
.workspace-step-actions{display:flex;align-items:center;gap:8px;padding:8px 14px;border-bottom:1px solid var(--line);flex-shrink:0}.workspace-step-actions button{padding:6px 12px;min-height:40px}.workspace-step-actions span{margin-left:auto;font-size:14px}.commit-hint{font-size:14px;padding:6px 14px}.workspace-filters{font-size:14px}.practice-navigation{max-width:190px}.navigation-hint{display:none}.feed-question{opacity:1;min-width:0}.feed-source{font-size:13px!important;margin-bottom:12px}.typeset-question,.typeset-part>div{min-width:0;overflow-wrap:anywhere}.typeset-question .katex-display{max-width:100%;overflow-x:auto;overflow-y:hidden}.typeset-question p{max-width:100%}.feed-card-body{min-width:0;overflow-x:auto}.question-side{padding:18px!important}.typeset-question{font-size:19px}.typeset-question .katex{white-space:normal}.typeset-question .katex .base{white-space:nowrap}
.reader-layout[data-layout]{display:grid!important;overflow:hidden;min-height:0;grid-template-columns:minmax(0,var(--question-width,45%)) 10px minmax(0,1fr)}.reader-layout[data-layout]>section{min-width:0;min-height:0;overflow:auto}.reader-layout[data-layout] .working-side{position:relative!important;width:auto!important;height:auto!important;max-height:none!important;min-width:0!important;inset:auto!important;padding:16px}.reader-layout[data-layout=question]{grid-template-columns:minmax(0,1fr)!important}.reader-layout[data-layout=notebook]{grid-template-columns:minmax(0,1fr)!important}.reader-layout[data-layout=notebook]>.question-side,.reader-layout[data-layout=notebook]>#question-divider{display:none!important}.reader-layout[data-layout=split]>#question-divider{display:block!important;touch-action:none}.reader-layout[data-layout].with-scheme{grid-template-columns:minmax(0,1fr) 10px minmax(0,1fr)!important}.reader-layout[data-layout].with-scheme>.working-side,.reader-layout[data-layout].with-scheme>#question-divider{display:none!important}.reader-layout[data-layout=notebook].with-scheme>.question-side{display:block!important}.reader-layout[data-layout] .notebook-chrome{top:-16px}.reader-layout[data-layout] .question-side{padding-right:18px!important}
.upload-question-choices{max-height:180px;overflow:auto;margin:12px 0;border-block:1px solid var(--line)}#upload-previews{display:flex;gap:12px;overflow:auto;margin:12px 0}#upload-previews img{width:180px;height:180px;object-fit:contain}#upload-previews iframe{width:100%;height:300px;min-width:280px}#upload-dialog{max-width:720px}
@media(max-width:1000px){.reader-heading{flex-direction:column;align-items:stretch}.workspace-top-actions{justify-content:flex-start}.workspace-body{display:flex;flex-direction:column}.practice-navigation{max-width:none;max-height:88px;padding:0 10px}.navigation-heading h3,.navigation-heading .eyebrow{display:none}.navigation-heading{display:block}.navigation-heading p{margin:3px 0;font-size:13px}.practice-navigation nav{flex-direction:row;width:max-content;margin:3px 0}.workspace-body>.reader-layout{flex:1}.reader-layout[data-layout=split]{grid-template-columns:minmax(0,1fr)!important;grid-template-rows:minmax(100px,35%) 10px minmax(0,1fr)}.reader-layout[data-layout=split] #question-divider{cursor:row-resize}.reader-layout[data-layout=split] #question-divider:after{width:36px;height:3px;top:3px;left:calc(50% - 18px)}.reader-layout[data-layout].with-scheme{grid-template-rows:1fr;grid-template-columns:minmax(0,1fr) 10px minmax(0,1fr)!important}}
@media(max-width:550px){.chapter details[open]{display:block}.workspace-top-actions{display:flex;flex-direction:row}.workspace-top-actions button{font-size:12px!important;padding:6px 8px}.reader-heading h2{font-size:15px!important}.workspace-step-actions{gap:4px;padding:5px 8px}.workspace-step-actions button{font-size:13px;padding:5px 7px}.workspace-step-actions span{font-size:12px}.question-side{padding:10px!important}.feed-question{padding:14px}.typeset-question{font-size:17px}.feed-card-heading{font-size:15px}.feed-card-heading button{font-size:13px}.commit-hint{font-size:13px}}
@media(pointer:coarse){button,.notebook-chrome .write-tools button,.notebook-more>summary{min-height:44px}.nav-question-row input{min-width:24px;min-height:24px}}
.set-cover{display:none}.practice-navigation .nav-question-row>input:first-child{display:none}.practice-navigation.editing-batch .nav-question-row>input:first-child{display:block}#notebook-resize{display:none!important}#workspace-notebook{display:none!important}#quick-save-working{display:none}#notebook-set{display:none!important}.reader-layout[data-layout=question],.reader-layout[data-layout=notebook]{grid-template-rows:minmax(0,1fr)!important}.reader-layout[data-layout].with-scheme #scheme-divider{display:block!important}
.typeset-question h3:empty{display:none}.question-details{font-size:13px;margin-top:16px;border-top:1px solid var(--line);padding-top:8px}.question-details summary{cursor:pointer;color:var(--muted)}.feed-card-heading{margin-bottom:18px}.feed-card-body .typeset-question>h3{display:none}.feed-card-body .typeset-question>p:first-of-type{margin-top:0}.reader-layout[data-layout=split] .question-side .feed-question{padding:14px}.reader-layout[data-layout=split] .feed-card-heading{margin-bottom:8px}.reader-layout[data-layout=split] .question-details{margin-top:8px}
@media(max-width:1000px){.reader-layout[data-layout=split]{grid-template-rows:minmax(130px,45%) 10px minmax(0,1fr)}}
.upload-question-choices label{display:flex;align-items:center;gap:10px;padding:8px 4px;font-size:14px;border-bottom:1px solid var(--line)}.upload-question-choices label input{width:22px;height:22px;flex-shrink:0}.upload-question-choices label span{overflow-wrap:anywhere}
.teacher-mode-bar{display:flex;align-items:center;gap:6px;padding:8px 14px;border-bottom:1px solid var(--line);background:#fffdf6;flex-shrink:0}.teacher-mode-bar[hidden]{display:none}.teacher-mode-bar button{background:transparent;color:var(--blue);padding:6px 12px;min-height:40px}.teacher-mode-bar button[aria-pressed=true]{background:var(--blue);color:white}.teacher-mode-bar>span{margin-left:10px;font-size:13px}
body:is([data-practice-mode=teach],[data-practice-mode=prepare]) :is(#upload-set,#workspace-finish,#practice-complete,#attempt-status,#commit-hint,#batch-analysis-status,#notebook-done,#previous-work-notice,#save-feedback,#set-controls,.assignment-mode-hint){display:none!important}body[data-practice-mode=teach] :is(.question-tools,.feed-source,.workspace-more,.paper-meta,.nav-question-row>input,.assignment-question-choice){display:none!important}body[data-practice-mode=teach] .workspace-top-actions{justify-content:flex-end}body[data-practice-mode=teach] #navigation-progress{margin:3px 0}body[data-practice-mode=preview] :is(.quick-curation,.assignment-question-choice,#workspace-assignment-builder,#workspace-assignment-basket){display:none!important}body[data-practice-mode=prepare] :is(#analyse-batch,.practice-ai-toggle,#view-batch-feedback){display:none!important}
@media(max-width:700px){.teacher-mode-bar{flex-wrap:wrap;padding:6px 10px}.teacher-mode-bar>span{flex-basis:100%;margin:0;font-size:12px}.teacher-mode-bar button{font-size:13px;min-height:38px}.teacher-mode-bar~.reader-heading{padding-top:8px!important;padding-bottom:8px!important}}
body[data-practice-mode=teach] :is(.intro,#access-note,#assignment-builder-toggle,#ai-usage-nav,#assignment-dashboard,#review-library,[data-view=membership],[data-view=history]){display:none!important}body[data-practice-mode=prepare] :is(.intro,#access-note,[data-view=membership]){display:none!important}header>.logo{display:none}header{padding:12px 24px;gap:14px}.library-teacher-bar{margin:0 0 20px;border:1px solid var(--line);border-radius:8px}.site-navigation~header nav{flex-wrap:wrap}body[data-practice-mode=teach] .section-heading{margin-top:14px}body[data-practice-mode=teach] .reader-heading h2{font-size:20px!important}
.equation-connector{display:block;text-align:center;font:inherit;font-size:16px;margin:8px 0}
#toggle-pen-tools{float:right;margin:0 0 5px 8px;padding:4px 8px;min-height:34px;font-size:12px}.notebook-chrome .working-heading{clear:both}.pen-tools-collapsed .notebook-chrome .write-tools{display:none!important}.question-list-collapsed .workspace-body{grid-template-columns:minmax(0,1fr)}.question-list-collapsed .practice-navigation{display:none!important}
#question-dialog.teaching-focus>:is(.teacher-mode-bar,.reader-heading,.workspace-filters,.workspace-step-actions,.set-controls,.commit-hint,.assignment-mode-hint){display:none!important}#question-dialog.teaching-focus .practice-navigation{display:none!important}#question-dialog.teaching-focus .workspace-body{display:block;flex:1;min-height:0}#question-dialog.teaching-focus .reader-layout{width:100%;height:100%}#question-dialog.teaching-focus .feed-question:not(.is-current){display:none!important}#question-dialog.teaching-focus .feed-card-heading .text-button{display:none}#question-dialog.teaching-focus .feed-source,#question-dialog.teaching-focus .question-tools,#question-dialog.teaching-focus .question-details{display:none!important}#question-dialog.teaching-focus .question-side{padding:16px 16px 84px!important}#question-dialog.teaching-focus .working-side{padding:12px 12px 84px!important}#question-dialog.teaching-focus .notebook-chrome{top:-12px;padding:5px 0;min-height:40px}#question-dialog.teaching-focus .notebook-chrome .working-heading,#question-dialog.teaching-focus .notebook-save-status{display:none!important}#question-dialog.teaching-focus .notebook-chrome .write-tools{clear:both;gap:4px}#question-dialog.teaching-focus .notebook-more{display:none!important}#question-dialog.teaching-focus .typed-working,#question-dialog.teaching-focus .working-side>.review-actions,#question-dialog.teaching-focus .working-side>p,#question-dialog.teaching-focus #review-feedback{display:none!important}#question-dialog.teaching-focus .feed-question{margin-bottom:0;padding:24px}#question-dialog.teaching-focus .feed-card-heading{margin-bottom:24px}#question-dialog.teaching-focus .scheme-side{padding-bottom:90px}
.teaching-focus-strip{position:absolute;bottom:max(14px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);z-index:50;display:flex;align-items:center;gap:8px;background:#fffdf6f5;border:1px solid #b9c7c8;border-radius:12px;padding:7px 10px;box-shadow:0 4px 22px #293f4c24;max-width:calc(100% - 20px);white-space:nowrap}.teaching-focus-strip[hidden]{display:none!important}.teaching-focus-strip button{padding:6px 10px;min-height:40px;font-size:14px}.teaching-focus-strip span{font-size:14px;min-width:82px;text-align:center}.teaching-focus-strip button:last-child{background:var(--blue);color:white}
@media(max-width:600px){.teaching-focus-strip{gap:4px;padding:6px;bottom:max(8px,env(safe-area-inset-bottom))}.teaching-focus-strip button{font-size:12px;padding:6px 7px;min-height:44px}.teaching-focus-strip span{min-width:65px;font-size:12px}#question-dialog.teaching-focus .feed-question{padding:16px}}
#question-dialog.teaching-focus .notebook-chrome{display:flex;align-items:center;gap:8px;flex-wrap:wrap}#question-dialog.teaching-focus .notebook-chrome .write-tools{order:1;flex:1 1 250px;min-width:0}#question-dialog.teaching-focus #toggle-pen-tools{float:none;order:2;flex-shrink:0;margin:0 0 0 auto}
@media(max-width:400px){.teaching-focus-strip{flex-wrap:wrap;justify-content:center;width:max-content;white-space:normal}.teaching-focus-strip button{font-size:12px}.teaching-focus-strip span{min-width:60px}}
.chapter details[open]{display:block!important}.chapter details{width:100%;min-width:0}.chapter .checkpoint-button{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;width:100%;max-width:none;padding:12px 0;gap:16px;font-size:17px;line-height:1.45}.chapter .checkpoint-button>span{min-width:0;overflow-wrap:normal;word-break:normal}.chapter .checkpoint-button small{white-space:nowrap;font-size:14px}.chapter{padding:20px}.chapter h3{margin:14px 0 6px}.chapter>p{margin:6px 0 12px}.chapter details>summary{padding:9px 0}.chapter-grid{align-items:start}#checkpoint-loading{width:min(460px,calc(100vw - 32px));padding:28px;border:1px solid #bbc9cc;border-radius:12px;color:var(--ink);background:var(--paper)}#checkpoint-loading::backdrop{background:#293f4c70}#checkpoint-loading h2{font-size:23px;line-height:1.4}#checkpoint-loading p{margin:16px 0 24px}#checkpoint-loading[aria-busy=true] p:before{content:'';display:inline-block;width:14px;height:14px;border:2px solid #bac8cc;border-top-color:var(--blue);border-radius:50%;margin-right:10px;animation:checkpoint-spin 1s linear infinite}#checkpoint-loading button{margin:4px}.question-loading{color:var(--muted);font-size:15px}@keyframes checkpoint-spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){#checkpoint-loading[aria-busy=true] p:before{animation:none}}

.course-picker{margin:22px 0 10px}.course-picker label{display:block;font-size:14px;margin-bottom:5px}.course-picker select{max-width:100%;min-height:44px}.course-picker p{margin-top:8px;max-width:760px}

.ib-skill-summary{padding:8px 14px;border-left:3px solid #9aaeaf;background:#f1f5f3;margin:8px 0 14px}.ib-skill-summary p{margin:3px 0}#ib-combinations{margin-top:32px}#ib-combinations details{padding:12px 0;border-top:1px solid var(--line)}#ib-combinations summary{cursor:pointer;font-weight:700}#ib-combinations button{margin:10px 8px 0 0}.chapter .checkpoint-button:disabled{opacity:.65;cursor:default}

/* Calm command bar with a restrained laser-red accent. */
:root{--practice-accent:#dc403c;--practice-accent-soft:#fff0ee}
.compact-command{position:relative!important;width:44px!important;min-width:44px!important;height:44px!important;padding:10px!important;font-size:0!important;display:inline-flex;align-items:center;justify-content:center}
.compact-command::before{content:"";display:block;width:21px;height:21px;background:currentColor;mask-image:var(--command-icon);mask-size:contain;mask-repeat:no-repeat}
.compact-command:hover::after,.compact-command:focus-visible::after{content:attr(data-command-label);position:absolute;top:calc(100% + 6px);right:0;z-index:120;background:var(--ink);color:white;font-size:13px;line-height:1.4;padding:7px 10px;border-radius:6px;white-space:nowrap;box-shadow:0 3px 12px #0002}
#enter-teaching-focus{color:var(--practice-accent);border-color:var(--practice-accent)}
#question-dialog .layout-switch button[aria-pressed=true],#question-dialog .student-signal[aria-pressed=true]{background:var(--practice-accent-soft)!important;color:var(--practice-accent)!important;border-color:var(--practice-accent)!important}
#question-dialog .feed-question.is-current{border-left:3px solid var(--practice-accent)}
#question-dialog .nav-question-row:has(.selected){border-left:3px solid var(--practice-accent)}
.workspace-top-actions{gap:6px!important}.notebook-tool-icons .tool-icon{min-width:44px!important;width:44px!important;height:44px!important}
.teaching-focus-strip{border-top:2px solid var(--practice-accent);flex-wrap:wrap;justify-content:center}.teaching-focus-strip button{min-width:44px;min-height:44px}.teaching-focus-strip .focus-signals{gap:4px}.teaching-focus-strip .focus-signals .combo-badge,.teaching-focus-strip .focus-signals .attempt-badge,.teaching-focus-strip .focus-signals .teacher-star-badge,.teaching-focus-strip .focus-signals .teacher-lightning-badge{display:none}.teaching-focus-strip .focus-signals sub{display:none}.teaching-focus-strip [aria-pressed=true]{color:var(--practice-accent)!important;background:var(--practice-accent-soft)!important;border-color:var(--practice-accent)!important}.teaching-focus-strip span{min-width:0}.student-signal{min-width:44px!important;min-height:44px!important}
@media(max-width:600px){.teaching-focus-strip{width:max-content;max-width:calc(100% - 16px);gap:3px}.teaching-focus-strip button{padding:6px}.compact-command:hover::after{white-space:normal;min-width:100px}}
#question-dialog .compact-command{font-size:0!important}#question-dialog .compact-command::after{font-size:13px}.teaching-focus-strip{width:max-content}#question-dialog.teaching-focus .ib-skill-summary{display:none!important}

.teaching-focus-strip>button svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;vertical-align:middle}

#learners-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:16px}.learner-card{background:white;border:1px solid var(--line,#d5dcd8);border-radius:8px;padding:18px;overflow-wrap:anywhere}.learner-card h3{margin:0 0 8px}.learner-card p{margin:6px 0}

/* Warm red has one purpose: the main action and personal/current indicators. */
:root{--practice-accent:#b43d35;--practice-accent-soft:#faefed}
#question-dialog #enter-teaching-focus{color:var(--blue);border-color:#bbc9cc;background:transparent}
#question-dialog .layout-switch button[aria-pressed=true]{background:var(--sage)!important;color:var(--ink)!important;border-color:#a7b9bd!important}
#question-dialog .feed-question.is-current{border-left:1px solid var(--line)}
#question-dialog .nav-question-row:has(.selected){border-left:3px solid var(--practice-accent)}
#question-dialog .batch-ready{background:var(--blue)!important;border-color:var(--blue)!important;color:white!important}
#question-dialog .student-signal[aria-pressed=true],.teaching-focus-strip .student-signal[aria-pressed=true]{color:var(--practice-accent)!important;background:var(--practice-accent-soft)!important;border-color:var(--practice-accent)!important}
.teaching-focus-strip{border-top:1px solid #b9c7c8}.teaching-focus-strip [aria-pressed=true]:not(.student-signal){background:var(--sage)!important;color:var(--ink)!important;border-color:#a7b9bd!important}
#question-dialog #review-my-answers,#review-submit-answers{background:var(--practice-accent);border-color:var(--practice-accent);color:white}
#question-dialog.free-practice #practice-complete,#question-dialog.free-practice #question-done,#question-dialog.free-practice #notebook-done,#question-dialog.free-practice .practice-ai-toggle{display:none!important}
#answer-review-dialog{width:min(1200px,96vw);max-height:94dvh;padding:24px;overflow:auto;border:1px solid var(--line);border-radius:12px}#answer-review-dialog::backdrop{background:#293f4c80}#answer-review-dialog h2{margin:0;font-size:26px}#answer-review-dialog h3{font-size:19px;margin:12px 0}#answer-review-dialog>.modal-heading{display:flex;justify-content:space-between;gap:16px;align-items:start}#answer-review-dialog>.modal-heading button{flex-shrink:0}.answer-review-layout{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(280px,1fr);gap:24px}.answer-review-layout>section{min-width:0}#review-question-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;max-height:62dvh;overflow:auto;padding:4px}.review-question-card{background:white;border:1px solid var(--line);border-radius:8px;padding:12px;min-width:0}.review-question-card.review-selected{border:2px solid var(--blue);padding:11px;background:#f3f7f6}.review-question-card label{display:flex;align-items:center;gap:9px;font-size:17px;cursor:pointer}.review-question-card input{width:22px;height:22px;accent-color:var(--blue);flex-shrink:0}.review-question-card p{margin:6px 0;font-size:13px;overflow-wrap:anywhere}.review-question-thumbnail{height:150px;overflow:hidden;background:white;display:flex;align-items:center;justify-content:center;border:1px solid #e3e7e4}.review-question-thumbnail img{width:100%;height:100%;object-fit:contain;min-height:0}.review-question-card details{margin-top:8px}.review-question-card summary{font-size:14px;cursor:pointer}.review-full-question img{width:100%;height:auto}.review-full-question .typeset-question{padding:8px}.review-answer-panel{border-left:1px solid var(--line);padding-left:24px}.review-answer-panel p{font-size:15px}#review-selection-summary{background:var(--sage);padding:12px;border-radius:6px}.review-file-card{border:1px solid var(--line);background:white;padding:10px;border-radius:6px;margin:10px 0}.review-file-card img{width:100%;max-height:160px;object-fit:contain}.review-file-card iframe{width:100%;height:200px;border:0}.review-file-card button{font-size:13px;padding:7px}#review-answer-files{max-height:32dvh;overflow:auto}#review-submit-answers{width:100%;min-height:44px}#answer-review-dialog .error:empty{display:none}@media(max-width:700px){#answer-review-dialog{padding:16px;width:96vw}.answer-review-layout{grid-template-columns:1fr;gap:12px}.review-answer-panel{border-left:0;border-top:1px solid var(--line);padding:12px 0 0}#review-question-grid{max-height:42dvh}.review-question-thumbnail{height:120px}#answer-review-dialog h2{font-size:22px}#answer-review-dialog>.modal-heading{flex-wrap:wrap}}

.review-question-thumbnail:has(.typeset-question){display:block;overflow:auto;text-align:left}.review-question-thumbnail .typeset-question{padding:10px;border:0;font-size:12px;border-radius:0}.review-question-thumbnail .typeset-question h3{display:none}.review-question-thumbnail .typeset-question p{font-size:12px;line-height:1.5;margin:4px 0}.review-question-thumbnail .typeset-part{grid-template-columns:16px minmax(0,1fr) 18px;gap:5px;margin:10px 0}.review-question-thumbnail .typeset-part strong,.review-question-thumbnail .part-mark{font-size:10px}.review-question-thumbnail .katex{font-size:1em}
@media(min-width:701px){#answer-review-dialog[open]{display:flex;flex-direction:column;height:min(860px,94dvh);overflow:hidden}#answer-review-dialog>.modal-heading,#answer-review-dialog>p{flex-shrink:0}.answer-review-layout{min-height:0;flex:1}.answer-review-layout>section:first-child{display:flex;flex-direction:column;min-height:0}.answer-review-layout>section:first-child>h3,.answer-review-layout>section:first-child>p{flex-shrink:0}#review-question-grid{flex:1;min-height:0;max-height:none;align-content:start;contain:layout paint;overscroll-behavior:contain}.review-answer-panel{overflow:auto;min-height:0}}

/* The shared notebook owns its canvas, toolbar and scrolling on every device. */
.reader-layout .working-side.shared-practice-notebook{display:flex;flex-direction:column;overflow:auto;padding:0!important;gap:6px}
.shared-practice-notebook .notebook-chrome{position:static;padding:4px 10px}
.shared-practice-notebook .notebook-chrome .write-tools,.shared-practice-notebook .notebook-window-actions{display:none!important}
.shared-practice-notebook #writing-sheets{flex:1 0 420px;min-height:420px;width:100%!important;zoom:1!important;background:none;touch-action:auto!important}
.shared-practice-notebook .assignment-notebook-frame{display:block;width:100%;height:100%;min-height:420px;border:0}
.shared-practice-notebook>.typed-working,.shared-practice-notebook>.review-actions,.shared-practice-notebook>#review-feedback{margin:0 12px}
#question-dialog.teaching-focus .shared-practice-notebook #writing-sheets{flex:1 0 100%;min-height:100%}
#question-cutout{display:none!important}
.shared-practice-notebook .notebook-chrome .working-heading,.shared-practice-notebook #toggle-pen-tools{display:none!important}
.shared-practice-notebook #writing-sheets{flex:1 0 max(480px,calc(100dvh - 250px));min-height:480px}

.resizing-workspace,.resizing-workspace *{user-select:none!important;-webkit-user-select:none!important;cursor:col-resize!important}.pane-divider{-webkit-user-select:none;user-select:none;touch-action:none}
#question-images>.feed-question{max-width:960px;margin-inline:auto}.question-side{touch-action:pan-y}.question-side .source-page{max-width:100%;height:auto;-webkit-user-drag:none}.shared-practice-notebook #writing-sheets{flex-basis:max(480px,calc(100dvh - 250px))}

.question-doubt-tools{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin:8px 0 12px}.question-doubt-tools>button{font:28px/1 system-ui;width:34px;min-height:34px;padding:0;border:1px solid #b43d35;border-radius:6px;color:#b43d35;background:transparent}.question-doubt-tools>button[aria-pressed=true]{color:white;background:#b43d35}.question-doubt-tools>input{width:155px;max-width:50vw;min-height:34px;padding:5px 8px;font:14px system-ui;border:1px solid #bac9cc;border-radius:6px}.doubt-status{font-size:12px;color:#667782}

.teach-today-toggle{padding:5px;line-height:0}.teach-today-toggle[aria-pressed="true"]{background:#ffde89;color:#293f4c}

/* Keep scope editing beside its source question; review stays compact. */
.assignment-scope-inline{position:sticky;top:0;z-index:8;display:flex;align-items:center;flex-wrap:wrap;gap:8px 12px;padding:9px 12px;margin:-7px 0 14px;border:1px solid var(--line,#cbd5d5);border-radius:6px;background:#fffdf6;font-size:14px}.assignment-scope-inline label{display:flex;align-items:center;gap:10px;margin:0;font-size:14px}.assignment-scope-inline input{width:235px;max-width:50vw;margin:0;padding:8px 10px;font:inherit;border:1px solid #b7c5c8;border-radius:5px;background:white}.assignment-scope-inline button{min-width:36px;min-height:36px;padding:4px 10px}.assignment-scope-status{font-size:12px;color:var(--muted,#526c7c);max-width:100%;overflow-wrap:anywhere}.assignment-selected-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;padding:12px 0;align-items:center}.assignment-selected-summary{min-width:0;display:grid;gap:5px}.assignment-selected-summary strong{font-size:14px;font-weight:600;line-height:1.45;overflow-wrap:anywhere}.assignment-selected-summary small{font-size:13px;color:var(--muted,#526c7c)}.assignment-selected-actions{display:flex;gap:5px}.assignment-selected-actions button{width:34px;min-width:34px;min-height:34px;padding:4px;font-size:17px}#assignment-selected-list{max-height:30dvh;padding-right:8px}#assignment-builder-dialog{font-size:16px}#assignment-totals{font-size:15px;padding:10px 0;border-top:1px solid var(--line,#cbd5d5)}@media(max-width:600px){.assignment-scope-inline label{width:100%}.assignment-scope-inline input{flex:1;max-width:none;min-width:0}.assignment-selected-row{gap:8px}.assignment-selected-actions{gap:3px}.assignment-selected-actions button{width:30px;min-width:30px}}

.physics-choices{border:1px solid #bac9cc;border-radius:8px;padding:14px;margin:16px 0;background:#f5f8f7}.physics-choices button{min-width:48px;min-height:44px;margin:4px}.physics-choices button[aria-pressed=true]{background:#293f4c;color:white}.physics-confirm{max-width:650px;max-height:85vh;overflow:auto;border:1px solid #bac9cc;border-radius:12px;padding:24px}.physics-confirm button{margin:8px}