:root{color-scheme:light;--bg: #f7f8fa;--surface: #fff;--soft: #f1f3f6;--ink: #202c3b;--muted: #59677a;--faint: #e6eaf0;--border: #dfe4eb;--accent: #2d5fc4;--accent-hover: #214d9f;--accent-soft: #eef3fc;--accent-border: #d5e1f7;--focus: #86a9ee;--danger: #a63838;--warning-bg: #fff5e7;--reader-size: 17px}html[data-font-size=large]{--reader-size: 19px}html[data-font-size=largest]{--reader-size: 21px}html[data-theme=dark]{color-scheme:dark;--bg: #141b25;--surface: #1c2532;--soft: #242f3e;--ink: #e0e7f1;--muted: #a2afc2;--faint: #303e52;--border: #344154;--accent: #9cbcff;--accent-hover: #bfd2ff;--accent-soft: #233550;--accent-border: #344f79;--focus: #a7c1f5;--danger: #ffaaaa;--warning-bg: #3b3022}html[data-theme=dark] .button-primary{background:#3564bf;border-color:#3564bf;color:#fff}html[data-theme=dark] .button-primary:hover{background:#4273d1;color:#fff}@media(prefers-color-scheme:dark){html[data-theme=system]{color-scheme:dark;--bg: #141b25;--surface: #1c2532;--soft: #242f3e;--ink: #e0e7f1;--muted: #a2afc2;--faint: #303e52;--border: #344154;--accent: #9cbcff;--accent-hover: #bfd2ff;--accent-soft: #233550;--accent-border: #344f79;--focus: #a7c1f5;--danger: #ffaaaa;--warning-bg: #3b3022}html[data-theme=system] .button-primary{background:#3564bf;border-color:#3564bf;color:#fff}}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:15px;line-height:1.6}button,input,select,textarea{font:inherit}a{color:var(--accent);text-underline-offset:3px}a:hover{color:var(--accent-hover)}button,.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;padding:8px 15px;border:1px solid var(--border);border-radius:7px;background:var(--surface);color:var(--ink);text-decoration:none;font-size:13px;font-weight:600;cursor:pointer;line-height:1.45;transition:background .15s,border-color .15s}button:hover,.button:hover{background:var(--soft);border-color:var(--muted);color:var(--ink)}button:disabled,input:disabled,select:disabled,textarea:disabled{cursor:not-allowed;opacity:.6}button:disabled:hover{border-color:var(--border)}.button-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.button-primary:hover{background:var(--accent-hover);color:#fff;border-color:var(--accent-hover)}.button-quiet{background:transparent;border-color:transparent;color:var(--muted)}.danger{color:var(--danger);border-color:var(--danger)}:focus-visible{outline:3px solid var(--focus);outline-offset:3px}h1,h2,h3,h4,p{margin-top:0}h1,h2,h3,h4{line-height:1.22;letter-spacing:-.025em}h1{font-size:42px;font-weight:650;margin-bottom:16px}h2{font-size:23px;font-weight:650;margin-bottom:14px}h3{font-size:18px;font-weight:630;margin-bottom:12px}h4{font-size:16px}p{margin-bottom:16px}small,.field-help{display:block;font-size:12px;line-height:1.6;color:var(--muted)}strong{font-weight:650}ul,ol{padding-left:23px}li+li{margin-top:8px}label{display:flex;flex-direction:column;gap:7px;font-size:13px;font-weight:550;margin:14px 0}input:not([type=checkbox]):not([type=radio]),select,textarea{background:var(--surface);border:1px solid var(--border);color:var(--ink);padding:10px 12px;border-radius:6px;width:100%;min-height:42px}input[type=checkbox],input[type=radio]{accent-color:var(--accent);width:17px;height:17px;flex-shrink:0}textarea{resize:vertical;line-height:1.7;min-height:100px}input[aria-invalid=true]{border-color:var(--danger)}fieldset{border:0;padding:0;margin:18px 0;min-width:0}legend{font-size:13px;font-weight:600;margin-bottom:8px}details{border-top:1px solid var(--border);padding:15px 0;margin:12px 0}summary{cursor:pointer;font-size:14px;font-weight:600;padding:3px 0}details[open]>summary{margin-bottom:16px}table{border-collapse:collapse;width:100%;font-size:14px}th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--border);vertical-align:top}th{font-weight:600;background:var(--soft)}caption{text-align:left;color:var(--muted);font-size:12px;padding:10px 0}td input{min-width:82px}table small{margin-top:5px}.table-wrap{max-width:100%;overflow:auto;margin:20px 0}.saved-response{white-space:pre-wrap;overflow-wrap:anywhere;font-size:.875rem}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;top:-100px;left:16px;z-index:100;padding:10px 16px;background:var(--surface)}.skip-link:focus{top:12px}.app-shell{display:grid;grid-template-columns:236px minmax(0,1fr);min-height:100vh}.sidebar{min-width:0;background:var(--surface);border-right:1px solid var(--border);position:sticky;top:0;height:100vh;padding:31px 20px 24px;display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none;margin:0 6px 39px;font-size:15px;font-weight:650;line-height:1.4}.brand small{font-size:8px;letter-spacing:.15em;margin-top:5px}.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:10px;background:var(--ink);color:var(--surface);font-size:21px;font-weight:650;letter-spacing:-.08em;flex-shrink:0}.brand-mark span{font-size:14px;margin-left:3px;align-self:flex-start;margin-top:7px}.primary-nav{display:flex;flex-direction:column;gap:5px}.primary-nav a{display:flex;align-items:center;gap:13px;padding:11px 14px;color:var(--muted);text-decoration:none;font-weight:550;font-size:14px;border-radius:7px}.primary-nav a>span{font-size:21px;width:22px;line-height:1}.primary-nav a.active{background:var(--accent-soft);color:var(--accent)}.primary-nav a:hover,.secondary-nav a:hover{background:var(--soft)}.nav-section{font-size:9px;letter-spacing:.14em;color:var(--muted);font-weight:650;margin:34px 14px 12px}.secondary-nav{display:flex;flex-direction:column;gap:3px}.secondary-nav a{font-size:12px;text-decoration:none;color:var(--muted);padding:9px 14px;border-radius:5px}.secondary-nav a.active{color:var(--accent);background:var(--accent-soft)}.sidebar-footer{margin-top:auto;padding:20px 12px 0;font-size:11px;color:var(--muted)}.sidebar-footer>a{display:block;text-decoration:none;color:var(--ink);margin:15px 0;font-size:12px}.sidebar-footer small{font-size:10px;line-height:1.7}.save-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#51806c;margin-right:6px}.save-dot.warning{background:var(--danger)}.workspace-main{min-width:0}.topbar{height:74px;padding:0 42px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:25px;background:var(--surface)}.topbar-label{font-size:12px;font-weight:550;white-space:nowrap}.muted{color:var(--muted)}.quick-search{display:flex;position:relative;width:300px}.quick-search input{font-size:12px!important;border:0!important;background:var(--soft)!important;padding-right:40px!important;min-height:36px!important}.quick-search button{position:absolute;right:0;min-height:36px;height:36px;width:36px;border:0;background:none;font-size:24px;font-weight:400;padding:0}.mobile-settings{display:none}main{max-width:1320px;padding:46px 48px 68px;margin:0 auto;outline:none!important}.page-heading{margin-bottom:32px;max-width:860px}.page-heading>p{font-size:15px;line-height:1.75;color:var(--muted);max-width:740px}.eyebrow,.section-kicker{font-size:10px;font-weight:650;letter-spacing:.12em;color:var(--muted);text-transform:uppercase}.eyebrow{display:block;margin-bottom:12px}.section-kicker{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}.home-heading{max-width:none;display:flex;justify-content:space-between;gap:24px;align-items:flex-start}.home-heading h1{font-size:42px;letter-spacing:-.038em}.home-heading .eyebrow{margin-bottom:17px}.date-label{color:var(--muted);font-size:12px;white-space:nowrap;margin-top:9px}.home-grid{display:grid;grid-template-columns:1.65fr 1fr;gap:23px}.next-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:28px 30px;position:relative;overflow:hidden}.next-card .section-kicker{margin-bottom:30px}.next-card h2{max-width:78%;font-size:28px;line-height:1.25}.next-card p{max-width:88%;font-size:14px;color:var(--muted);line-height:1.75;min-height:60px}.chapter-number{position:absolute;top:68px;right:23px;font-size:60px;font-weight:500;letter-spacing:-.06em;color:var(--muted)}.next-card .toolbar{margin-top:25px}.next-card .toolbar .muted{font-size:11px}.panel{padding:26px 28px;background:var(--surface);border:1px solid var(--border);border-radius:10px;margin-bottom:24px;min-width:0}.panel p:last-child{margin-bottom:0}.today-review{background:var(--accent-soft);border-color:var(--accent-border);position:relative;margin:0;padding:28px 26px;overflow:hidden}.today-review h2{font-size:25px;max-width:270px;margin-top:32px}.today-review p{font-size:13px;color:var(--muted);max-width:300px;position:relative;z-index:1}.today-review .text-link{font-size:13px;position:relative;z-index:1}.review-decoration{position:absolute;right:-12px;bottom:-32px;font-size:135px;font-weight:300;line-height:1;color:var(--accent-border);transform:rotate(-15deg)}.text-link{font-size:13px;text-decoration:none;font-weight:600}.metrics-strip{display:grid;grid-template-columns:repeat(4,1fr);margin:28px 0 32px;padding:20px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.metrics-strip>div{padding:0 23px;border-right:1px solid var(--border)}.metrics-strip>div:first-child{padding-left:0}.metrics-strip>div:last-child{border:0}.metrics-strip strong{display:block;font-size:25px;font-weight:600;line-height:1.25}.metrics-strip strong small{display:inline;font-size:15px;font-weight:400}.metrics-strip>div>span{font-size:11px;color:var(--muted)}.setup-panel{display:flex;gap:20px;justify-content:space-between;align-items:center;background:var(--soft);border:1px solid var(--border);border-radius:8px;padding:22px 25px;margin:28px 0}.setup-panel h2{font-size:17px;margin-bottom:7px}.setup-panel p{font-size:12px;max-width:480px;color:var(--muted);margin:0}.setup-panel .toolbar{margin:0;flex-shrink:0;max-width:46%}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:32px 0 17px}.section-heading h2,.section-heading h3{margin:0}.section-heading>a,.section-heading>span{font-size:12px}.module-preview{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--border);border-radius:8px;background:var(--surface);overflow:hidden}.module-preview-item{display:flex;align-items:flex-start;gap:15px;padding:22px;color:var(--ink);text-decoration:none;border-right:1px solid var(--border)}.module-preview-item:last-child{border:0}.module-preview-item h3{font-size:14px;line-height:1.5;margin:1px 0 8px;letter-spacing:0}.module-preview-item p{font-size:11px;color:var(--muted);margin:0}.index-number{display:block;color:var(--accent);font-size:13px;font-weight:600;letter-spacing:.03em;flex-shrink:0}.module-preview-item>span:last-child{margin-left:auto;color:var(--muted)}.link-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:25px}.link-grid a{text-decoration:none;border-top:1px solid var(--border);padding:18px 0}.link-grid strong{display:block;font-size:12px;line-height:1.6;color:var(--ink);margin-bottom:6px}.link-grid span{font-size:11px;color:var(--muted)}.toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:18px 0 4px}.toolbar>label{margin:0}.toolbar .compact-label{flex-direction:row;align-items:center}.compact-label select{width:auto}.form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.filter-bar{padding:19px 22px;background:var(--surface);border:1px solid var(--border);border-radius:8px;margin-bottom:30px;align-items:flex-end}.filter-bar label:first-child{flex:1;min-width:200px}.filter-bar select{max-width:330px}.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.card-grid .panel{margin:0}.notice,.note-panel{background:var(--soft);border:1px solid var(--border);border-left:3px solid var(--accent);padding:18px 22px;border-radius:5px;margin:22px 0;font-size:14px}.notice h2,.note-panel h2{font-size:19px}.notice p:last-child,.note-panel p:last-child{margin:0}.error{color:var(--danger)}.empty-state{text-align:center;background:var(--surface);border:1px dashed var(--border);border-radius:10px;padding:45px 28px;margin:25px 0;color:var(--muted)}.empty-state h1,.empty-state h2{color:var(--ink)}.full-state{min-height:100vh;max-width:700px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.badge{display:inline-flex;padding:3px 8px;border-radius:4px;border:1px solid var(--border);font-size:10px;letter-spacing:.02em;background:var(--soft);color:var(--muted);white-space:nowrap}.site-footer{border-top:1px solid var(--border);padding:21px 48px;display:flex;justify-content:space-between;gap:24px;font-size:10px;color:var(--muted)}.site-footer a{white-space:nowrap}.persistence-banner{padding:15px 32px;background:var(--warning-bg);color:var(--ink);border-bottom:1px solid var(--border);font-size:13px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}.persistence-banner>span{flex:1;min-width:220px}.plain-text{white-space:pre-wrap;overflow-wrap:anywhere}.module-section{margin-bottom:40px}.module-heading{display:flex;align-items:flex-start;gap:22px;margin-bottom:18px}.module-heading>.index-number{font-size:23px;margin-top:25px;width:37px}.module-heading h2{margin-bottom:8px}.module-heading p{font-size:12px;color:var(--muted);margin:0}.module-heading .eyebrow{margin-bottom:8px}.lesson-list{border:1px solid var(--border);background:var(--surface);border-radius:9px;overflow:hidden}.lesson-list>a{display:flex;align-items:center;gap:20px;padding:21px 23px;text-decoration:none;color:var(--ink);border-bottom:1px solid var(--border)}.lesson-list>a:last-child{border:0}.lesson-list>a:hover,.list-link:hover,.module-preview-item:hover{background:var(--soft)}.lesson-status{width:32px;height:32px;background:var(--soft);border:1px solid var(--border);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;flex-shrink:0;color:var(--muted)}.lesson-status.done{background:var(--accent-soft);color:var(--accent)}.lesson-list h3{font-size:15px;margin:0 0 6px}.lesson-list p{font-size:12px;color:var(--muted);margin:0;max-width:630px}.lesson-duration{margin-left:auto;font-size:11px;white-space:nowrap;color:var(--muted)}.breadcrumb{display:flex;gap:12px;font-size:12px;color:var(--muted);margin:0 0 29px;flex-wrap:wrap}.breadcrumb a{text-decoration:none}.reader-heading{max-width:870px}.reader-heading h1{font-size:46px;line-height:1.13;max-width:760px;margin:20px 0}.reader-lead{font-size:19px;color:var(--muted);line-height:1.7;max-width:750px}.reader-toolbar{border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:13px 0;margin:25px 0 40px;gap:12px}.reader-toolbar button{font-size:12px}.reader-toolbar>a{font-size:12px;margin-left:auto}.reader-grid{display:grid;grid-template-columns:190px minmax(0,1fr);gap:42px}.contents-rail{position:sticky;top:30px;height:fit-content;display:flex;flex-direction:column;gap:14px;font-size:12px}.contents-rail strong{font-size:9px;letter-spacing:.12em;color:var(--muted);margin-bottom:9px}.contents-rail a{text-decoration:none;color:var(--muted);line-height:1.5;border-left:2px solid var(--border);padding-left:12px}.contents-rail a:hover{color:var(--accent);border-color:var(--accent)}.lesson-copy{max-width:760px;font-size:var(--reader-size);line-height:1.85;min-width:0}.lesson-copy h2{font-size:29px;line-height:1.35;margin:45px 0 22px}.lesson-copy>h2:first-child{margin-top:0}.lesson-copy h3{font-size:21px;margin:26px 0 14px;line-height:1.5}.lesson-copy p{margin-bottom:24px}.lesson-copy li{margin-top:10px}.lesson-copy .eyebrow{font-size:10px}.lesson-callout,.worked-example,.reading-assignment{padding:25px 28px;border:1px solid var(--border);border-radius:7px;margin:29px 0;background:var(--surface)}.lesson-callout{border-left:3px solid var(--accent);background:var(--accent-soft)}.callout-warning{background:var(--warning-bg);border-left-color:#9f6d26}.lesson-callout h3,.worked-example h3,.reading-assignment h3{margin-top:0}.worked-example ol{padding-left:25px}.worked-example li{padding-left:7px}.worked-example strong{font-size:14px}.reading-assignment{background:var(--soft)}.reading-assignment small{margin-top:12px}.math-panel{padding:24px;background:var(--surface);border:1px solid var(--border);border-radius:7px;margin:25px 0;overflow:auto}.math-panel small{margin-top:10px}.math-expression-display{display:block;overflow:auto;max-width:100%}.katex-display{margin:10px 0!important}.practice-intro,.lesson-finish{padding-top:15px;border-top:1px solid var(--border);margin-top:50px}.practice-intro h2{margin-top:10px}.exercise-card{border:1px solid var(--border);background:var(--surface);border-radius:9px;padding:27px;margin:28px 0;font-size:15px;line-height:1.7}.exercise-card h3{font-size:19px;margin:18px 0 22px;font-weight:600}.exercise-card h4{margin:0 0 15px}.exercise-card p{margin-bottom:14px}.exercise-card .section-kicker{font-size:9px}.choice-list{display:flex;flex-direction:column;gap:9px}.choice{display:flex;flex-direction:row;align-items:flex-start;gap:12px;padding:13px 15px;background:var(--bg);border:1px solid var(--border);border-radius:6px;margin:0;font-size:14px;font-weight:400;cursor:pointer}.choice input{margin-top:3px}.choice:has(input:checked){border-color:var(--accent);background:var(--accent-soft)}.choice-list+.field-help{margin-top:8px}.confidence{max-width:230px;margin-top:24px}.confidence .muted{font-size:11px;font-weight:400}.rubric{display:flex;flex-direction:column;gap:12px}.rubric label{display:grid;grid-template-columns:1fr 150px;align-items:center;gap:20px;font-weight:400;font-size:13px;margin:0}.order-list{padding-left:24px}.order-list li{padding:12px 0;border-bottom:1px solid var(--border)}.order-list li>div{display:inline-flex;gap:6px;margin-left:12px}.order-list button{padding:4px 10px;min-height:32px}.support-actions{padding-top:18px;border-top:1px solid var(--border);margin-top:24px}.support-actions button{font-size:12px}.hint,.feedback,.solution{padding:20px;border-radius:6px;background:var(--soft);border:1px solid var(--border);margin-top:18px}.feedback.correct{border-left:3px solid #5c896e}.solution ol{padding-left:20px}.personal-note{padding:22px;background:var(--surface);border:1px solid var(--border);border-radius:7px;font-size:14px}.focus-layout{grid-template-columns:minmax(0,1fr)}.focus-layout>.sidebar{display:none}.focus-layout main{max-width:1180px}.focus-layout .topbar{padding:0 48px}.tabs{display:flex;gap:5px;flex-wrap:wrap;padding-bottom:15px;border-bottom:1px solid var(--border);margin:0 0 28px}.tabs a,.tabs button{padding:8px 13px;border:1px solid transparent;font-size:12px;color:var(--muted);text-decoration:none;border-radius:5px;background:transparent}.tabs [aria-current=page],.tabs [aria-pressed=true]{color:var(--accent);background:var(--accent-soft);border-color:var(--accent-border)}.day-picker,.relation-grid{display:flex;gap:13px;flex-wrap:wrap}.day-picker label,.checkbox-label{flex-direction:row;align-items:center;gap:8px;margin:0}.day-picker label{padding:8px 12px;background:var(--soft);border:1px solid var(--border);border-radius:5px}.week-panel{border:1px solid var(--border);border-radius:8px;background:var(--surface);padding:24px;margin:20px 0}.week-panel>.section-heading{margin:0 0 20px}.day-heading{font-size:12px;color:var(--muted);margin:23px 0 6px}.task-row,.review-row{display:flex;align-items:center;gap:15px;padding:16px 0;border-bottom:1px solid var(--border)}.task-row:last-child,.review-row:last-child{border:0}.task-row>div,.review-row>div{flex:1;min-width:0}.task-row a{font-size:13px;text-decoration:none;color:var(--ink)}.task-row small{font-size:11px;margin-top:3px}.task-row button{font-size:11px;min-height:32px;padding:5px 9px}.task-row.completed>a,.task-row.completed>div>a{text-decoration:line-through;color:var(--muted)}.task-row.skipped{opacity:.65}.task-check{margin:0}.review-row p{font-size:12px;color:var(--muted);margin:6px 0}.review-row label{max-width:160px;margin:0}.review-row a{font-size:14px}.list-link{display:flex;align-items:center;justify-content:space-between;gap:18px;border-bottom:1px solid var(--border);padding:17px 0;text-decoration:none;font-size:14px}.list-link:last-child{border:0}.item-nav{display:flex;gap:8px;flex-wrap:wrap;margin:24px 0}.item-nav button{min-width:40px;font-size:12px}.item-nav [aria-current=step]{background:var(--accent);color:#fff;border-color:var(--accent)}.selection-summary{background:var(--soft);padding:18px 20px;border-radius:6px;margin:20px 0}.selection-summary p{font-size:13px;margin:7px 0 0}.resource-card{background:var(--surface);border:1px solid var(--border);padding:27px;border-radius:8px;text-decoration:none;color:var(--ink)}.resource-card>.index-number{margin-bottom:24px}.resource-card h2{font-size:23px;max-width:340px}.resource-card p{font-size:14px;color:var(--muted)}.resource-card .text-link{color:var(--accent)}.back-link{display:inline-block;font-size:12px;margin-bottom:23px;text-decoration:none}.lab .toolbar{margin-top:0}.lab-state{margin:30px 0}.lab-plot{width:100%;height:260px;background:var(--soft);border:1px solid var(--border);border-radius:7px;margin:25px 0}.relation-grid{max-width:420px;display:grid;grid-template-columns:repeat(3,1fr)}.relation-grid label{flex-direction:row;align-items:center}.lab table{font-variant-numeric:tabular-nums}.checklist .section-heading{margin:0 0 22px}.checklist-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;padding:18px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);margin:20px 0}.checklist-grid strong{display:block;font-size:21px}.checklist-grid span{font-size:11px;color:var(--muted)}.inline-tag{display:inline-block;border:1px solid var(--border);background:var(--soft);border-radius:4px;padding:3px 8px;font-size:11px;text-decoration:none;margin:3px 5px 3px 0}.course-row{display:grid;grid-template-columns:80px 1fr 100px;gap:22px;padding:27px 0;border-top:1px solid var(--border)}.course-code{font-size:16px;font-weight:600;letter-spacing:.03em;color:var(--muted)}.course-code small{font-size:10px;margin-top:4px;font-weight:400}.course-row h2{font-size:20px;margin-bottom:7px}.course-row h2 a{text-decoration:none;color:var(--ink)}.course-row p{font-size:13px;color:var(--muted);margin-bottom:10px}.course-row .checkbox-label{align-self:flex-start;font-size:12px;margin-top:3px}.course-row .muted{font-size:11px}.hebrew-title{text-align:left;font-size:15px!important;direction:rtl;unicode-bidi:plaintext}.hebrew-heading{text-align:left;direction:rtl;unicode-bidi:plaintext;font-size:22px!important;color:var(--ink)!important}.comparison-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.comparison-grid p{font-size:12px;margin:8px 0 20px}.comparison-grid strong{font-size:12px}.condition{margin:22px 0;border-left:3px solid var(--border);padding:15px 20px;background:var(--bg)}.condition.admission{border-color:var(--accent)}.condition.required-background{border-color:#a87635}.condition.recommended-background{border-color:#648779}.condition-fact{display:grid;grid-template-columns:1fr 210px;align-items:center;gap:16px;font-weight:400}.condition-group{border-left:1px solid var(--border);padding-left:16px;margin-top:15px}.condition-group>strong{font-size:12px}.result-count{font-size:12px;color:var(--muted)}.book-grid{display:flex;flex-direction:column;gap:28px}.book-card{display:grid;grid-template-columns:185px 1fr;gap:32px;padding:28px;background:var(--surface);border:1px solid var(--border);border-radius:9px}.book-card h2{font-size:26px;margin:8px 0}.book-card p{font-size:13px}.book-card .field-help{font-size:12px}.book-card>div>small{margin:14px 0}.book-spine{height:255px;background:#233b50;color:#e9f0f1;padding:23px 19px 20px 24px;display:flex;flex-direction:column;position:relative;border-left:6px solid #1a2939;border-radius:2px 6px 6px 2px;box-shadow:4px 5px 0 var(--soft);margin-top:3px}.book-spine>span{font-size:10px;line-height:1.7;opacity:1}.book-spine strong{font-family:Georgia,serif;font-size:26px;line-height:1.2;margin-top:30px;font-weight:400}.book-spine small{font-size:8px;letter-spacing:.12em;color:inherit;opacity:1;margin-top:auto}.book-1{background:#344c47;border-color:#213833}.book-2{background:#795444;border-color:#50372d}.book-3{background:#4a4e70;border-color:#32364e}.glossary>div{display:grid;grid-template-columns:200px 1fr;gap:28px;padding:20px 0;border-top:1px solid var(--border)}.glossary dt{font-weight:600}.glossary dd{margin:0;font-size:14px}.glossary dd>a{display:block;font-size:12px;margin-top:9px}.search-results>a{display:block;padding:24px 0;border-top:1px solid var(--border);text-decoration:none}.search-results h2{font-size:20px}.search-results p{font-size:13px;color:var(--muted)}.reset-preview{padding:20px;background:var(--warning-bg);border:1px solid var(--border);margin-top:20px;border-radius:6px}.import-preview{border-color:var(--accent)}.file-label{padding:10px 0}.content-report{font-size:13px}.tag-list{margin:14px 0}@media(min-width:1550px){main{padding-top:55px}.home-heading h1{font-size:48px}.next-card{padding:32px 36px}.next-card h2{font-size:32px}}@media(max-width:1200px){.app-shell{grid-template-columns:204px minmax(0,1fr)}.sidebar{padding:25px 14px}.brand{gap:8px;font-size:13px}.brand-mark{width:36px;height:36px}.topbar{padding:0 28px}.topbar-label .muted{display:none}main{padding:35px 28px 55px}.reader-grid{grid-template-columns:150px minmax(0,1fr);gap:25px}.home-heading h1{font-size:36px}.home-grid{grid-template-columns:1.4fr 1fr}.next-card h2{font-size:25px}.setup-panel{align-items:flex-start}.setup-panel .toolbar{max-width:40%}.metrics-strip>div{padding:0 15px}.module-preview-item{padding:18px 14px;gap:10px}.module-preview-item h3{font-size:13px}.topbar .quick-search{width:270px}.form-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.condition-fact{grid-template-columns:1fr}.comparison-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}}@media(max-width:900px){.app-shell{grid-template-columns:minmax(0,1fr)}.sidebar{height:auto;position:static;display:block;padding:17px 22px 0;border-right:0;border-bottom:1px solid var(--border)}.brand{margin:0 0 15px}.primary-nav{flex-direction:row;gap:5px;justify-content:space-between}.primary-nav a{padding:10px 13px;font-size:13px}.primary-nav a>span{font-size:18px;width:auto}.nav-section,.sidebar-footer{display:none}.secondary-nav{flex-direction:row;gap:3px;overflow-x:auto;white-space:nowrap;padding:8px 0}.secondary-nav a{padding:8px 11px;font-size:11px}.topbar{height:61px;padding:0 24px;gap:15px}.mobile-settings{display:block;font-size:12px}.topbar-label{font-size:11px}.quick-search{flex:1;max-width:300px}.home-heading h1{font-size:37px}.reader-heading h1{font-size:39px}.reader-grid{grid-template-columns:1fr}.contents-rail{position:static;flex-direction:row;flex-wrap:wrap;gap:10px;border-bottom:1px solid var(--border);padding-bottom:20px}.contents-rail strong{width:100%;margin:0}.contents-rail a{font-size:11px}.lesson-copy{max-width:100%}.focus-layout .topbar-label{display:none}.setup-panel{flex-direction:column}.setup-panel .toolbar{max-width:100%}.card-grid{gap:18px}.checklist-grid{grid-template-columns:repeat(3,1fr)}.course-row{grid-template-columns:64px 1fr;gap:16px}.course-row>.checkbox-label{grid-column:2}.book-card{grid-template-columns:150px 1fr;gap:24px}.book-spine{height:235px;padding:20px 16px}.book-spine strong{font-size:23px}.site-footer{padding:20px 28px}}@media(max-width:620px){body{font-size:14px}.sidebar{padding:14px 14px 0}.primary-nav a{flex-direction:column;gap:6px;padding:9px 11px;font-size:11px;min-width:50px}.brand{font-size:14px}.brand small{font-size:8px}.topbar{padding:0 17px}.topbar-label{display:none}.quick-search{max-width:none;width:100%!important}.topbar>.mobile-settings{font-size:11px}.topbar button{font-size:11px}main{padding:30px 19px 45px}.page-heading h1,.home-heading h1{font-size:33px}.page-heading>p{font-size:14px}.home-heading{display:block}.date-label{display:block;font-size:11px;margin-top:-2px;margin-bottom:22px}.home-grid{grid-template-columns:1fr;gap:16px}.next-card{padding:23px}.next-card .section-kicker{font-size:9px;margin-bottom:27px}.next-card h2{font-size:27px}.next-card p{min-height:0;font-size:13px}.chapter-number{font-size:54px;top:73px}.today-review{padding:23px}.today-review h2{max-width:none;margin-top:15px;font-size:23px}.today-review p{max-width:90%;font-size:13px}.review-decoration{font-size:110px}.metrics-strip{grid-template-columns:repeat(2,1fr);gap:22px 0;margin:25px 0}.metrics-strip>div{padding:0 15px!important}.metrics-strip>div:nth-child(odd){padding-left:0!important}.metrics-strip>div:nth-child(2n){border:0}.metrics-strip strong{font-size:25px}.metrics-strip>div>span{font-size:10px}.setup-panel{padding:20px}.setup-panel .toolbar{gap:7px}.setup-panel button,.setup-panel .button{font-size:11px;padding:8px 11px}.section-heading h2{font-size:20px}.section-heading>a{font-size:11px}.module-preview{grid-template-columns:1fr}.module-preview-item{border:0;border-bottom:1px solid var(--border);padding:19px}.module-preview-item h3{font-size:14px}.link-grid{grid-template-columns:1fr;gap:0}.link-grid a{padding:18px 0}.panel{padding:22px 19px}.toolbar{gap:8px}.toolbar button,.toolbar .button{max-width:100%}.card-grid,.form-grid{grid-template-columns:1fr}.form-grid{gap:0}.filter-bar{padding:17px;gap:14px}.filter-bar label{width:100%}.filter-bar select{max-width:none}.module-heading{gap:13px}.module-heading h2{font-size:22px}.lesson-list>a{padding:17px 15px;gap:12px;flex-wrap:wrap}.lesson-list>a>div{flex:1;min-width:0}.lesson-list h3{font-size:14px}.lesson-list p{font-size:11px}.lesson-duration{font-size:10px;width:100%;margin-left:44px}.reader-heading h1{font-size:35px}.reader-lead{font-size:17px}.reader-heading .section-kicker{font-size:9px}.reader-toolbar{gap:8px}.reader-toolbar>a{margin-left:0;width:100%;padding:8px 0}.reader-toolbar button{font-size:11px;padding:7px 11px}.reader-grid{gap:20px}.lesson-copy h2{font-size:25px;margin-top:36px}.lesson-copy h3{font-size:20px}.lesson-callout,.worked-example,.reading-assignment{padding:21px 18px;margin:23px 0}.exercise-card{padding:21px 17px}.exercise-card h3{font-size:17px}.exercise-card label{font-size:13px}.choice{padding:11px}.rubric label{grid-template-columns:1fr;gap:6px}.confidence{max-width:100%}.math-panel{padding:18px 12px}.math-expression{font-size:.92em}.review-row{flex-wrap:wrap;align-items:flex-start}.review-row>div{flex:1 1 100%}.review-row label{max-width:none;flex:1}.task-row{gap:8px;flex-wrap:wrap}.task-row>div{flex:1 1 70%}.task-row button{margin-left:21px}.task-row button+button{margin-left:0}.week-panel{padding:19px}.week-panel>.section-heading{gap:10px}.week-panel h3{font-size:16px}.week-panel .section-heading>span{font-size:10px}.day-picker{gap:7px}.day-picker label{padding:7px 9px;font-size:11px}.book-card{grid-template-columns:1fr;padding:23px}.book-spine{height:215px;width:155px}.book-card h2{font-size:24px}.checklist-grid{grid-template-columns:repeat(2,1fr)}.checklist .section-heading{display:block}.checklist-grid strong{font-size:20px}.course-row{grid-template-columns:1fr;gap:9px}.course-code{display:flex;gap:10px;align-items:center}.course-code small{margin:0}.course-row>.checkbox-label{grid-column:1}.course-row h2{font-size:21px}.comparison-grid{grid-template-columns:1fr}.glossary>div{grid-template-columns:1fr;gap:8px}.tabs{gap:3px}.tabs a,.tabs button{font-size:11px;padding:7px 9px}.site-footer{padding:20px;flex-direction:column;gap:8px}.persistence-banner{padding:16px}.persistence-banner button{font-size:11px}.focus-layout .topbar{padding:0 17px}.full-state{padding:25px}.lab-plot{height:220px}.relation-grid{gap:7px}.relation-grid label{font-size:12px}.section-heading{flex-wrap:wrap}.lesson-copy table{font-size:12px}th,td{padding:10px 9px}.resource-card{padding:23px}.resource-card h2{font-size:23px}.import-preview .toolbar{align-items:stretch;flex-direction:column}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}html[data-reduced-motion=true]{scroll-behavior:auto}html[data-reduced-motion=true] *{animation:none!important;transition:none!important}.course-guide{margin-bottom:2.5rem;border:1px solid var(--border);border-radius:16px;overflow:hidden;background:var(--surface)}.course-primer{padding:clamp(22px,4vw,44px)}.course-primer h2{max-width:24ch;font-size:clamp(24px,3vw,34px);letter-spacing:-.025em;margin:12px 0}.guide-lead{max-width:68ch;font-size:19px;line-height:1.65}.guide-fit{display:grid;grid-template-columns:1fr 1fr;gap:28px;border-top:1px solid var(--border);margin-top:28px;padding-top:22px}.guide-fit h3{font-size:15px;margin:0 0 6px}.guide-fit p{margin:0;color:var(--muted)}.sample-question{margin-top:24px;border-left:3px solid var(--accent);padding:4px 0 4px 20px}.sample-question p{max-width:72ch;margin-bottom:0}.visual-disclosure{padding:18px clamp(22px,4vw,44px);background:var(--soft);border-top:1px solid var(--border)}.visual-disclosure>summary{color:var(--accent);font-weight:650;cursor:pointer}.course-visual{margin:24px 0 6px;max-width:780px}.course-visual>h3,.step-exploration h3{font-size:21px}.course-visual label{max-width:450px}.visual-result{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:16px;overflow-wrap:anywhere}.process-diagram{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:12px;list-style:none;padding:0;margin:24px 0}.process-diagram li{position:relative;padding:16px 12px;border:1px solid var(--border);border-radius:8px;background:var(--surface);display:flex;flex-direction:column;gap:8px}.process-diagram li>span{font-size:12px;color:var(--muted)}.process-diagram li.current{outline:2px solid var(--accent);background:var(--accent-soft)}.process-diagram li+li:before{content:"→";position:absolute;top:40%;left:-13px;z-index:1;color:var(--accent)}.pixel-experiment{display:flex;flex-wrap:wrap;align-items:center;gap:25px;margin:24px 0}.pixel-grid{display:grid;grid-template-columns:repeat(3,48px);gap:3px}.pixel-grid span{display:grid;place-items:center;height:48px;font-variant-numeric:tabular-nums;border-radius:3px}.attention-bars{display:grid;gap:15px;margin:25px 0}.attention-bars>div{display:grid;grid-template-columns:60px 1fr 48px;align-items:center;gap:14px}.attention-bars>div>div{background:var(--border);height:18px;border-radius:3px;overflow:hidden}.attention-bars i{display:block;background:var(--accent);height:100%;transform-origin:left}.allocation-diagram{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0}.allocation-diagram>div{display:flex;flex-direction:column;gap:10px;padding:20px;background:var(--surface);border:1px solid var(--border);border-radius:8px}.allocation-diagram>div>span{font-size:23px;color:var(--accent)}.learning-plot{width:min(100%,440px);display:block;margin:20px auto;color:var(--ink)}.learning-plot text{fill:currentColor;font-size:12px}.guide-navigation{display:flex;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:0 clamp(18px,4vw,44px);gap:24px}.guide-navigation button{padding:18px 0;border:0;border-radius:0;background:transparent;font-weight:650;color:var(--muted)}.guide-navigation button[aria-pressed=true]{color:var(--accent);box-shadow:inset 0 -3px var(--accent)}.guide-navigation span{display:inline-block;font-size:12px;margin-left:5px}.guide-subjects{padding:24px clamp(18px,4vw,44px) 32px}.guide-subjects h2{font-size:24px}.subject-toolbar{align-items:end;margin-top:25px}.subject-toolbar label{flex:1;min-width:min(230px,100%)}.subject-list{border-top:1px solid var(--border);margin:16px 0 24px}.subject-item{border-bottom:1px solid var(--border)}.subject-item h3{margin:0}.subject-item h3 button{display:grid;grid-template-columns:28px 1fr 16px;width:100%;gap:12px;align-items:start;padding:20px 0;text-align:left;color:var(--ink);background:none;border:0;border-radius:0;font-size:17px;line-height:1.45}.subject-item h3 button:hover{color:var(--accent)}.subject-number{color:var(--muted);font-size:12px;padding-top:4px}.subject-body{padding:0 24px 24px 40px;max-width:82ch;font-size:17px;line-height:1.7}.subject-body>p{margin-top:0}.subject-example{border-left:2px solid var(--accent-border);padding:8px 18px;background:var(--accent-soft)}.subject-example strong{font-size:13px;color:var(--accent)}.subject-example p{margin:5px 0}.guide-source{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;margin:20px 0;font-size:13px;color:var(--muted)}.resource-filter{max-width:300px;margin:24px 0}.resource-list{display:grid}.study-resource{display:grid;grid-template-columns:32px 1fr;gap:15px;padding:25px 0;border-bottom:1px solid var(--border)}.study-resource h3{font-size:19px;margin:7px 0}.study-resource p{margin:8px 0}.resource-number{color:var(--muted);font-size:12px;padding-top:4px}.resource-boundary{font-size:13px;color:var(--muted)}.lesson-intro{margin:25px 0;border-left:3px solid var(--accent);padding:18px 24px;background:var(--accent-soft);border-radius:0 8px 8px 0}.lesson-intro>p{max-width:70ch}.lesson-intro summary{cursor:pointer;font-size:14px;color:var(--accent)}.compact-resources{margin-top:14px}@media(max-width:600px){.guide-fit,.allocation-diagram{grid-template-columns:1fr;gap:20px}.guide-navigation{gap:16px}.guide-navigation button{font-size:14px}.subject-body{padding-left:0;padding-right:0}.study-resource{grid-template-columns:1fr;gap:0}.resource-number{display:none}.process-diagram{grid-template-columns:1fr}.process-diagram li+li:before{content:"↓";left:50%;top:-17px}}@media print{.guide-navigation,.subject-toolbar,.visual-disclosure{display:none!important}.subject-body[hidden]{display:block}.subject-item h3 button{display:grid!important}.course-guide{overflow:visible}.study-resource,.subject-item{break-inside:avoid}}@media print{body{background:#fff;color:#111;font-size:11pt}.sidebar,.topbar,.site-footer,.reader-toolbar,.contents-rail,.persistence-banner,.support-actions,.content-report,.skip-link,.tabs,.lesson-finish button,.practice-intro .toolbar{display:none!important}.app-shell,.reader-grid{display:block}main{padding:0;max-width:none}.lesson-copy{max-width:none;font-size:11pt;line-height:1.7}.reading-page{max-width:none}.reader-heading h1{font-size:27pt}.panel,.exercise-card,.worked-example,.lesson-callout{break-inside:avoid;border:1px solid #bbb;background:#fff!important;box-shadow:none}a{color:#111;text-decoration:underline}button{display:none}textarea{border:1px solid #bbb;color:#111;background:#fff;min-height:120px}.book-spine{display:none}.book-card{display:block}.math-expression{overflow:visible}.notice{background:#fff}.page-heading h1{font-size:27pt}}
