/* Homepage only: the selected blackboard notebook design. */
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.experience{background:#28272280}
@media(min-width:1600px){.hero-grid{min-height:330px}.hero-visual img{height:330px}}
@media(max-width:1100px){.brand-sub{display:none}.nav-links{gap:27px}.nav-actions .nav-login:not(.account-link){display:none}.hero h1{font-size:clamp(38px,4.8vw,54px)}.hero-visual img{height:280px}.notebook-sheet{padding:22px 26px}.course-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,255px),1fr))}.experience-layout{gap:25px}.course-card h4{font-size:21px}.level-track{grid-template-columns:repeat(4,minmax(0,1fr))}.report-head{align-items:flex-start;flex-direction:column}}
@media(max-width:800px){.shell{width:calc(100% - 32px)}.nav{padding:0 15px;height:66px}.site-header{margin-top:15px;top:10px}.nav-links{display:none}.menu-btn{display:flex}.nav-actions .nav-cta{display:none}.hero{padding-top:16px}.hero-grid{grid-template-columns:1fr 1fr;gap:0;min-height:270px}.hero h1{white-space:normal;font-size:clamp(32px,5.7vw,43px)}.hero h1 .mark{display:inline-block}.hero .lead{font-size:16px}.hero-actions{gap:9px;margin-top:18px}.hero-actions .btn{font-size:13px;padding:9px 15px}.hero-visual img{height:250px}.hero-proof{margin-top:15px}.proof-text{font-size:12px}.proof-text small{font-size:11px}.experience-layout,.report-grid,.story-grid,.faq-grid{grid-template-columns:1fr;gap:30px}.section{padding:58px 0}.section-tight{padding:40px 0}.report-head{flex-direction:row}.story-copy .section-title{font-size:30px}.cta-inner{flex-direction:column;align-items:flex-start}.footer-top{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.catalog-heading h2{font-size:15px}.catalog-heading a{font-size:12px}.course-card-body{min-height:220px}.course-meta{max-width:calc(100% - 112px)}.course-art{width:120px}.course-card h4,.course-card p{max-width:calc(100% - 110px)}}
@media(max-width:540px){html{scroll-padding-top:94px}.shell{width:calc(100% - 24px)}.nav{border-radius:14px;padding:0 12px;gap:12px}.brand-name{font-size:18px}.brand-mark{width:43px;height:43px}.nav-actions{gap:8px}.account-link{font-size:12px}.account-link span{font-size:20px}.hero{padding-top:14px}.notebook-sheet{padding:17px 18px 20px;border-radius:16px}.tape-lilac{right:17%;width:55px}.hero-grid{grid-template-columns:1fr;min-height:0}.hero-copy{padding:8px 0 0}.hero h1{font-size:clamp(31px,8.5vw,43px);white-space:nowrap;margin-top:11px}.hero .lead{font-size:16px;line-height:1.6;margin-top:12px}.eyebrow{font-size:12px}.hero-actions{flex-wrap:nowrap}.hero-actions .btn{padding:9px 13px;flex:1;font-size:13px;min-height:45px;white-space:nowrap}.hero-proof{margin-top:16px}.hero-visual{margin:0 -10px}.hero-visual img{height:auto;max-height:215px;width:100%;object-fit:contain}.catalog-heading{align-items:start;gap:10px}.catalog-heading h2{max-width:58%;line-height:1.6}.catalog-heading a{white-space:nowrap;padding-top:2px}.directory-panel{display:block;margin-bottom:12px}.directory-title{display:flex;align-items:center;gap:12px;margin-bottom:8px;padding:0}.directory-title span{font-size:11px}.tree{gap:6px}.tree-btn{font-size:12px;min-height:32px;padding:4px 8px!important}.course-grid{grid-template-columns:1fr;gap:12px}.course-card-body{padding:17px;min-height:210px}.course-card h4{font-size:22px}.course-meta{font-size:11px}.course-card p{font-size:13px;-webkit-line-clamp:3}.course-art{width:126px;height:126px;top:15px}.course-card h4,.course-card p,.course-meta{max-width:calc(100% - 116px)}.course-bottom{padding-top:16px}.price small{display:block;margin:2px 0 0}.section-title{font-size:29px}.section-desc{font-size:15px}.lab-card{padding:12px}.lab-title{font-size:11px}.lab-live{font-size:11px}.lab-main{aspect-ratio:1/1.04}.graph-label,.graph-tooltip{padding:6px 8px;top:8px}.graph-label{left:8px}.graph-tooltip{right:8px}.graph-label strong{font-size:12px}.graph-tooltip b{font-size:13px}.lab-controls{grid-template-columns:1fr;gap:8px}.control-head{font-size:13px}.control{padding:9px 12px}.report-card,.feedback-card,.level-route{padding:18px}.report-head{flex-direction:column}.report-badge{font-size:12px}.metric b{font-size:22px}.metric span{font-size:11px}.metric{padding:9px}.feedback-card h3{font-size:23px}.level-route-head{flex-direction:column;align-items:start;gap:6px}.level-track{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.level-node strong{font-size:13px}.video-caption{bottom:10px;left:12px}.video-caption strong{font-size:16px}.video-caption small{font-size:11px}.play{width:52px;height:52px}.video-caption{background:#25221bbf;border-radius:6px;padding:4px 8px}.cta-panel{padding:26px 20px}.cta-inner h2{font-size:26px}.cta-actions{width:100%;gap:9px}.cta-actions .btn{flex:1;font-size:13px;padding:9px 13px}.footer-bottom{flex-direction:column}.footer-top{gap:20px}.mobile-cta{display:flex;position:fixed;bottom:calc(9px + env(safe-area-inset-bottom));left:12px;right:12px;z-index:55;padding:8px;background:#34312afa;border:1px solid #7a7058;border-radius:14px;gap:8px;box-shadow:0 -4px 20px #17161066}.mobile-cta .btn{flex:1;font-size:13px;min-height:43px;padding:8px 12px}body{padding-bottom:calc(75px + env(safe-area-inset-bottom))}}
@media(max-width:350px){.hero-actions .btn{padding:8px;font-size:12px}.hero h1{font-size:30px}.brand-name{font-size:16px}.brand-mark{width:38px}.account-link{font-size:11px}.course-art{width:105px}.course-card h4,.course-card p,.course-meta{max-width:calc(100% - 94px)}.price{font-size:18px}.hero .lead{font-size:14px}.notebook-sheet{padding-left:15px;padding-right:15px}.hero-visual img{max-height:195px}.lab-title{font-size:10px}}
@media(max-width:800px){body:before{background-size:100% auto;background-repeat:repeat-y;opacity:.55}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}