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:root{--navy:#102950;--blue:#193767;--mid:#396f9c;--ice:#c5e9ff;--cream:#f7f8f7;--paper:#fff;--muted:#647185;--line:#dce2e8;--radius:18px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;color:var(--navy);background:var(--cream);font-family:Avenir,'Avenir Next',sans-serif;font-size:16px;line-height:1.65}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button{color:inherit}img{max-width:100%;display:block}svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}button{border:0;background:none}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:600;line-height:1.12;letter-spacing:-.045em}h2{font-size:46px}h2 span,h1 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h3{font-size:18px}.learning-steps p{font-size:12px}.learning-steps>div{gap:25px}.closing-section .wrap{padding:60px 0}.closing-section h2{font-size:37px;max-width:360px}.closing-section img{width:280px;right:-100px;top:70px}.closing-section .eyebrow{font-size:8px}footer{padding-top:40px!important;gap:25px}.footer-brand{width:100%;justify-content:space-between;padding-right:20px}.footer-brand img{width:90px}.footer-brand p{font-size:12px}.footer-bottom{flex-wrap:wrap;gap:11px 20px;padding-top:20px;font-size:9px}.footer-bottom span:first-child{width:100%}.footer-bottom button{font-size:9px;margin-left:auto}footer>div:nth-child(2){font-size:11px;gap:25px}.classroom{padding-top:24px;padding-bottom:60px}.crumb{margin-bottom:29px;font-size:9px}.classroom-heading{display:block;margin-bottom:27px}.classroom-heading h1{font-size:46px;margin-top:15px}.classroom-heading>p{font-size:12px;margin-top:23px}.demo-tag{margin-top:12px}.library-tools{flex-wrap:wrap;gap:13px;margin-bottom:20px}.search{min-width:100%;padding:13px}.filter-button{font-size:10px;padding:10px 14px}.filter-tabs{gap:25px}.filter-tabs button{font-size:11px}.results-line{font-size:9px;padding:20px 0}.lesson-page{padding-top:24px}.lesson-layout{gap:25px}.video-player{border-radius:10px}.player-placeholder h2{font-size:21px}.player-placeholder p{font-size:10px;margin:8px 0}.player-placeholder .round-play{width:35px;height:35px;margin-bottom:10px}.player-placeholder button{font-size:10px}.lesson-heading{margin-top:23px;gap:15px}.lesson-heading h1{font-size:29px}.lesson-heading .eyebrow{font-size:8px}.lesson-description{font-size:12px}.lesson-aside #related-lessons{grid-template-columns:1fr;gap:0}.related-item{display:grid;grid-template-columns:90px 1fr;gap:15px;border-bottom:1px solid var(--line)}.related-item img{height:64px;width:90px;margin:0}.related-item strong{font-size:13px}.related-item small{font-size:9px}.related-item{padding:15px 0}.lesson-aside h2{margin-bottom:13px}dialog{padding:25px 21px;max-height:92vh}.dialog-top h2{font-size:27px}.dialog-top .eyebrow{font-size:8px}.dialog-top .icon-button{width:32px;height:32px}.editor-notice{font-size:10px}.form-actions{gap:12px}.form-actions .button{gap:13px;padding:12px}.form-actions .text-link{max-width:115px}.empty-state{padding:45px 20px}.empty-state h2{font-size:25px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}

/* Keep the portrait caption clear of the floating class link. */
.portrait-caption{bottom:85px;max-width:calc(100% - 58px);width:280px}.portrait-caption p{overflow-wrap:anywhere}
@media(max-width:800px){.portrait-caption{width:230px;bottom:90px}}
@media(max-width:600px){.portrait-caption{width:250px;bottom:83px}.portrait-caption p{font-size:26px}}

/* Readable small supporting text on both light surfaces. */
.pending-note{color:#596c81!important}.catalog-note,.footer-bottom,.crumb,.results-line,.filter-tabs button,.lesson-tabs button,.hero-footnote,.floating-lesson small,.file-field small{color:#596c81}.subject-strip .wrap>span,.lesson-link-label{color:#526981}.learning-steps>div>span{color:#596c81}
.hero>*{min-width:0}
@media(max-width:600px){.hero{grid-template-columns:minmax(0,1fr)}.hero h1{font-size:clamp(38px,12vw,54px)}.hero h1>span{font-size:.9em}.hero-visual{width:100%}.hero-actions{gap:18px}.hero-actions .button{padding:14px 16px;gap:16px}}