:root{--font-display:var(--font-fraunces),"Georgia",serif;--font-main:var(--font-manrope),system-ui,sans-serif;--font-persian:"Vazirmatn","Tahoma",sans-serif;--bg:#f0f2f8;--bg-soft:#f8fafc;--bg-card:#ffffff;--surface:#ffffff;--surface-soft:#f8fafc;--surface-hover:#f3f6fb;--navy:#1a2051;--ink:#0d1b2a;--gray:#64748b;--gray-light:#94a3b8;--border:#e2e6f0;--border-soft:#edf1f7;--orange:#f97316;--amber:#fbbf24;--text:#1a2051;--text-strong:#0d1b2a;--text-soft:#536174;--text-muted:#64748b;--accent-soft:#fff7ed;--shadow-soft:rgba(26,32,81,0.07);--accent:#f97316;--radius-sm:16px;--radius-md:22px;--radius-lg:30px;color-scheme:light}html[data-theme=dark]{--bg:#07111f;--bg-soft:#0b1526;--bg-card:#111b2d;--surface:rgba(15,23,42,0.94);--surface-soft:#101a2c;--surface-hover:#162238;--navy:#f8fafc;--ink:#f8fafc;--gray:#a8b3c7;--gray-light:#8090aa;--border:rgba(148,163,184,0.20);--border-soft:rgba(148,163,184,0.14);--text:#e5edf8;--text-strong:#f8fafc;--text-soft:#b8c4d8;--text-muted:#8fa1ba;--accent-soft:rgba(249,115,22,0.15);--shadow-soft:rgba(0,0,0,0.34);--accent:#f97316;color-scheme:dark}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body,html{-webkit-user-select:none;-moz-user-select:none;user-select:none}.admin-copy-enabled body,.admin-copy-enabled body *{-webkit-user-select:text;-moz-user-select:text;user-select:text}html.lehr-mode-active body,html.lehr-mode-active body *{cursor:none!important}html.lehr-mode-active [data-lehr-ui],html.lehr-mode-active [data-lehr-ui] *{cursor:auto!important}html.lehr-mode-active body,html.lehr-mode-active body *{touch-action:none!important}html.lehr-mode-active [data-lehr-ui],html.lehr-mode-active [data-lehr-ui] *{touch-action:manipulation!important}html.lehr-mode-active main[data-lesson-progress-managed] section[id]>[hidden]{display:block!important}html[data-lehr-recording-ready] [data-radyar-assistant],html[data-lehr-recording-ready] [data-radyar-footer],html[data-lehr-recording-ready] [data-radyar-navbar]{display:none!important}body{background:var(--bg);color:var(--text);font-family:var(--font-main);font-size:15px;line-height:1.65;overflow-x:hidden}[dir=rtl] :not([lang=en]):not([lang=en] *):not([data-radyar-navbar]):not([data-radyar-navbar] *):not([data-andarun-home]):not([data-andarun-home] *){font-family:var(--font-persian)!important;letter-spacing:0!important;line-height:1.9;word-spacing:2px}.sLabel{font-size:11px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--orange);font-family:var(--font-main)}.sLabel,.sTitle{margin-bottom:12px}.sTitle{font-family:var(--font-display);font-style:italic;font-size:clamp(24px,3.2vw,38px);font-weight:700;line-height:1.15;color:var(--navy)}.sSub{font-size:15px;color:var(--gray);line-height:1.7;max-width:520px;margin-bottom:48px}.divider{height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent);margin:0 5vw}html[data-theme=dark] body{background:radial-gradient(circle at 10% 0,rgba(249,115,22,.1),transparent 32rem),radial-gradient(circle at 90% 8%,rgba(14,165,233,.09),transparent 30rem),var(--bg);color:var(--text)}html[data-theme=dark] .sTitle{color:var(--text-strong)}html[data-theme=dark] .sSub{color:var(--text-soft)}html[data-theme=dark] .divider{background:linear-gradient(90deg,transparent,rgba(148,163,184,.18),transparent)}::selection{background:rgba(249,115,22,.28);color:var(--text-strong)}button[data-section-id=takehome]{color:#b45309!important;background:linear-gradient(135deg,rgba(251,191,36,.18),rgba(249,115,22,.1))!important;border:1px solid rgba(245,158,11,.28)!important}button[data-section-id=takehome],button[data-section-id=takehome] strong{font-weight:950!important;font-family:var(--font-main)!important}button[data-section-id=takehome] span:first-child{color:#f97316!important}section#takehome .sectionHead,section#takehome>button:first-child{background:linear-gradient(135deg,rgba(251,191,36,.22),rgba(16,185,129,.1))!important;border-bottom:1px solid rgba(245,158,11,.28)!important}section#takehome .sectionHead h2,section#takehome h2,section#takehome>button:first-child h2{font-weight:950!important;font-family:var(--font-main)!important;direction:ltr;unicode-bidi:-webkit-isolate;unicode-bidi:isolate;color:#92400e!important}section table tbody td:first-child{font-weight:850;color:var(--text-strong)}[class*=heroText]:has(>h1):has(>[class*=actions])>p{display:none!important}[class*=heroText]:has(>h1):has(>[class*=actions])>[class*=actions]{margin-top:24px}[dir=rtl] section#mrt table td:first-child,[dir=rtl] section#mrt table th:first-child{direction:ltr;text-align:center!important;font-family:var(--font-main)!important;font-weight:850}html[data-theme=dark] button[data-section-id=takehome]{color:#fbbf24!important;background:linear-gradient(135deg,rgba(251,191,36,.16),rgba(249,115,22,.1))!important;border-color:rgba(251,191,36,.28)!important}html[data-theme=dark] section#takehome .sectionHead h2,html[data-theme=dark] section#takehome h2,html[data-theme=dark] section#takehome>button:first-child h2{color:#fbbf24!important}@media (max-width:760px){[class*=heroFacts],[class*=heroStats]{display:none!important}}@page radyarLesson{size:A4 portrait;margin:15mm 16mm 20mm}@media print{html[data-lesson-print],html[data-lesson-print][data-theme=dark]{color-scheme:light!important;background:#fff!important}html[data-lesson-print],html[data-lesson-print] body{width:auto!important;min-width:0!important;overflow:visible!important;background:#fff!important;color:#111827!important;font-size:10pt!important;line-height:1.48!important;-webkit-print-color-adjust:exact;print-color-adjust:exact;-webkit-user-select:text;-moz-user-select:text;user-select:text}html[data-lesson-print] body{page:radyarLesson}html[data-lesson-print] [data-lesson-concept-explorer],html[data-lesson-print] [data-lesson-progress-ui],html[data-lesson-print] [data-print-exclude],html[data-lesson-print] main [class*=actions],html[data-lesson-print] main [class*=author],html[data-lesson-print] main [class*=heroFacts],html[data-lesson-print] main [class*=heroStats],html[data-lesson-print] main [class*=hero],html[data-lesson-print] main [class*=toolbar],html[data-lesson-print] main [role=tablist],html[data-lesson-print] main audio,html[data-lesson-print] main iframe,html[data-lesson-print] main nav,html[data-lesson-print] main video,html[data-lesson-print] main>aside{display:none!important}html[data-lesson-print] main,html[data-lesson-print] main article,html[data-lesson-print] main>div{width:100%!important;max-width:none!important;min-width:0!important;margin:0!important;padding-inline:0!important;transform:none!important;background:#fff!important}html[data-lesson-print] main *{min-height:0!important;background-color:transparent!important;box-shadow:none!important;text-shadow:none!important;animation:none!important;transition:none!important}html[data-lesson-print] main :is(h1,h2,h3,h4,p,li,td,th,dt,dd,strong,b,small,span){color:#111827!important}html[data-lesson-print] main h1{font-size:20pt!important;line-height:1.2!important}html[data-lesson-print] main h2{color:#126c84!important;font-size:14pt!important;line-height:1.25!important}html[data-lesson-print] main h3{font-size:11.5pt!important;line-height:1.3!important}html[data-lesson-print] main :is(h1,h2,h3,h4){break-after:avoid-page;page-break-after:avoid}html[data-lesson-print] main p{orphans:3;widows:3}html[data-lesson-print] main section{overflow:visible!important;page-break-inside:auto!important;break-inside:auto!important;page-break-before:auto;break-before:auto;border-color:#d7dde5!important;background:transparent!important}html[data-lesson-print] main section+section{margin-top:5mm!important}html[data-lesson-print] main section>button:first-child{cursor:default!important;padding:2.5mm 3mm!important;border:0!important;-webkit-border-start:3pt solid #38a3bf!important;border-inline-start:3pt solid #38a3bf!important;border-radius:1.5mm!important;background:#eff8fa!important;break-after:avoid-page;page-break-after:avoid}html[data-lesson-print] main section>button:first-child [class*=toggle],html[data-lesson-print] main section>button:first-child svg:last-child{display:none!important}html[data-lesson-print] main section[id]>[hidden],html[data-lesson-print] main section[id]>[id$=-content],html[data-lesson-print] main section[id]>[id$=-panel]{display:block!important;max-height:none!important;opacity:1!important;visibility:visible!important;overflow:visible!important}html[data-lesson-print] main section[id] [class*=readButton],html[data-lesson-print] main section[id] button[aria-pressed]{display:none!important}html[data-lesson-print] main :is([class*=splitGrid],[class*=imageGrid],[class*=figureGrid],[class*=gallery],[class*=vascularLayout]){display:grid!important;grid-template-columns:repeat(2,minmax(0,1fr))!important;align-items:start!important;grid-gap:4mm!important;gap:4mm!important}html[data-lesson-print] main [class*=zoneGrid]{display:grid!important;grid-template-columns:repeat(2,minmax(0,1fr))!important;grid-gap:3mm!important;gap:3mm!important}html[data-lesson-print] main :is([class*=protocolGrid],[class*=criteriaGrid],[class*=discoidStats]){display:grid!important;grid-template-columns:repeat(2,minmax(0,1fr))!important;grid-gap:3mm!important;gap:3mm!important}html[data-lesson-print] main [class*=gradeHierarchy]{gap:3mm!important}html[data-lesson-print] main [class*=gradeSubgroups]{display:grid!important;grid-template-columns:repeat(3,minmax(0,1fr))!important;grid-gap:2mm!important;gap:2mm!important;-webkit-padding-start:3mm!important;padding-inline-start:3mm!important}html[data-lesson-print] main :is([class*=gradeCard],[class*=gradeSubtype]){padding:3mm!important;break-inside:avoid-page;page-break-inside:avoid}html[data-lesson-print] main [class*=gradeDetails]{gap:1.5mm!important}html[data-lesson-print] main img{display:block!important;width:auto!important;max-width:88mm!important;max-height:66mm!important;margin-inline:auto!important;object-fit:contain!important}html[data-lesson-print] main svg{max-width:100%!important;height:auto!important}html[data-lesson-print] main figure{width:-moz-fit-content!important;width:fit-content!important;max-width:94mm!important;margin:4mm auto!important;padding:2.5mm!important;border:.5pt solid #cbd5e1!important;border-radius:2mm!important;background:#fff!important}html[data-lesson-print] main :is([class*=tearTypesFigure],[class*=discoidFigure]){width:100%!important;max-width:150mm!important}html[data-lesson-print] main :is([class*=tearTypesFigure],[class*=discoidFigure]) img{max-width:145mm!important;max-height:76mm!important}html[data-lesson-print] main figcaption{margin-top:2mm!important;color:#64748b!important;font-size:7.5pt!important;line-height:1.35!important}html[data-lesson-print] main [class*=callout],html[data-lesson-print] main figure,html[data-lesson-print] main img{break-inside:avoid-page;page-break-inside:avoid}html[data-lesson-print] main [class*=card]{padding:3mm!important;border:.5pt solid #d7dde5!important;-webkit-border-start:2pt solid #94a3b8!important;border-inline-start:2pt solid #94a3b8!important;border-radius:2mm!important;page-break-inside:auto!important;break-inside:auto!important}html[data-lesson-print] main :is([class*=rememberNote],[class*=warning]) :is(p,span,strong,b),html[data-lesson-print] main :is([class*=rememberNote],[class*=warning],[class*=calloutLabel],[class*=calloutBody]){color:#334155!important}html[data-lesson-print] main table{width:100%!important;border-collapse:collapse!important;font-size:8.5pt!important}html[data-lesson-print] main thead{display:table-header-group}html[data-lesson-print] main tfoot{display:table-footer-group}html[data-lesson-print] main tr{break-inside:avoid-page;page-break-inside:avoid}html[data-lesson-print] main td,html[data-lesson-print] main th{padding:2.2mm!important;border:.5pt solid #cbd5e1!important;background:transparent!important}html[data-lesson-print] main th{background:#eef2f6!important;font-weight:750!important}html[data-lesson-print] main a{color:#111827!important;text-decoration:none!important}html[data-lesson-print] main [style*="position: fixed"],html[data-lesson-print] main [style*="position: sticky"]{position:static!important}html[data-lesson-print] main [class*=videoFrameWrap]{display:none!important}html[data-lesson-print] [data-lesson-print-case]{margin:3mm 0!important;border:.5pt solid #cbd5e1!important;border-radius:2mm!important;break-inside:avoid-page;page-break-inside:avoid;background:#fff!important}html[data-lesson-print] [data-lesson-print-case-header]{min-height:0!important;padding:2mm 3mm!important;background:#eef7f8!important}html[data-lesson-print] [data-lesson-print-case-header] a,html[data-lesson-print] [data-lesson-print-case-viewport] [class*=caseControls],html[data-lesson-print] [data-lesson-print-case-viewport] [class*=caseViewportHint]{display:none!important}html[data-lesson-print] [data-lesson-print-case-content]{display:grid!important;grid-template-columns:52mm minmax(0,1fr)!important;align-items:stretch!important}html[data-lesson-print] [data-lesson-print-case-viewport]{width:52mm!important;height:52mm!important;aspect-ratio:auto!important}html[data-lesson-print] [data-lesson-print-case-viewport] img{position:absolute!important;inset:0!important;width:52mm!important;height:52mm!important;max-width:52mm!important;max-height:52mm!important;object-fit:contain!important}html[data-lesson-print] [data-lesson-print-case-body]{gap:2mm!important;padding:3mm!important;border-color:#d7dde5!important;background:#fff!important}html[data-lesson-print] [data-lesson-print-case-body] h3{max-width:none!important;font-size:11pt!important}html[data-lesson-print] [data-lesson-print-case-body] :is(p,li){font-size:8pt!important;line-height:1.35!important}html[data-lesson-print] [data-lesson-print-case-credit]{padding:1.5mm 3mm!important;color:#64748b!important;background:#f8fafc!important}html[data-lesson-print] [data-lesson-print-teaching-group]{padding:3mm!important;border:.5pt solid #d7dde5!important;background:#fff!important}html[data-lesson-print] [data-lesson-print-teaching-panels]{display:grid!important;grid-template-columns:repeat(2,minmax(0,1fr))!important;grid-gap:3mm!important;gap:3mm!important}html[data-lesson-print] [data-lesson-print-teaching-panel],html[data-lesson-print] [data-lesson-print-teaching-panel][hidden]{display:block!important;min-height:0!important;padding:3mm!important;border:.5pt solid #d7dde5!important;border-radius:2mm!important;break-inside:avoid-page;page-break-inside:avoid}html[data-lesson-print] [data-lesson-print-teaching-panel] h4{margin:1.5mm 0 2mm!important;font-size:11pt!important}html[data-lesson-print] [data-lesson-print-teaching-panel] dl{display:grid!important;grid-gap:2mm!important;gap:2mm!important;margin:2mm 0 0!important}html[data-lesson-print] [data-lesson-print-teaching-panel] dl>div{padding-top:1.5mm!important}html[data-lesson-print] [data-lesson-print-teaching-panel] :is(dt,dd){margin-bottom:1mm!important;color:#111827!important;font-size:7.5pt!important;line-height:1.35!important}}