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12px}.lesson-body .walkthrough-note{font-size:12px;margin-bottom:0}.resource-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:30px}.resource{border-top:1px solid var(--line);padding-top:20px}.resource h3{font-size:20px}.resource p{font-size:12px}.resource img{width:100%;height:180px;object-fit:cover;border-radius:10px;margin-bottom:20px}.sandbox-head{margin-bottom:25px}.sandbox-head h1{font-size:44px;margin-bottom:15px}.sandbox-grid{display:grid;grid-template-columns:1fr 340px;gap:35px}.sandbox-config{display:grid;grid-template-columns:1fr 1fr;gap:27px}.sandbox-visual img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:13px}.practice-summary{background:#e9eddf;border-radius:14px;padding:25px;align-self:start}.practice-summary h3{font-size:22px}.practice-summary dl{font-size:12px;margin:20px 0}.practice-summary dl>div{display:flex;justify-content:space-between;gap:15px;padding:9px 0;border-bottom:1px solid #ced6c1}.practice-summary dt{color:#758168}.practice-summary dd{text-align:right;margin:0;font-weight:600}.practice-summary p{font-size:12px}.sandbox-config .form-grid{grid-template-columns:1fr}.sandbox-hint{font-size:11px;line-height:1.65;margin-top:20px}.recommendation{margin-top:20px;border-top:1px solid #c6d0b9;padding-top:15px;font-size:12px;color:var(--deep)}.lesson-outcome{background:var(--deep);color:white;padding:24px;border-radius:12px;margin-bottom:25px}.lesson-outcome h3{font-size:23px}.lesson-outcome p{color:#d8e4ce;font-size:13px;margin:0}.sources{margin-top:30px;display:flex;gap:15px;flex-wrap:wrap}.review-note{border-top:1px solid var(--line);margin-top:35px;padding-top:18px;font-size:11px;color:#818978}footer{margin:0 48px;border-top:1px solid var(--line);padding:22px 0;display:flex;gap:25px;justify-content:space-between;color:#7a8272;font-size:10px}footer span:first-child{color:#536249}footer b{font-weight:400;margin-left:10px}footer button{font-size:10px;color:#7b8471;background:none;border:0;padding:0}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);background:var(--deep);color:white;border-radius:25px;padding:12px 24px;font-size:12px;box-shadow:0 5px 25px #0002;opacity:0;pointer-events:none;transition:opacity .2s;z-index:5}#toast.show{opacity:1}[hidden]{display:none!important}
@media(min-width:1550px){.page{max-width:1450px}.hero{min-height:430px}}
@media(max-width:1100px){.main-nav{gap:24px}.main-nav nav{gap:20px}.brand{width:165px}.page{padding:28px 32px 45px}.course-layout{gap:28px;grid-template-columns:1fr 250px}.lesson-grid{grid-template-columns:190px 1fr;gap:25px}.lesson-sidebar{padding-right:15px}.lesson-title{font-size:37px}.sandbox-grid{grid-template-columns:1fr 275px;gap:25px}.sandbox-config{grid-template-columns:1fr}.sandbox-visual img{aspect-ratio:2;max-height:230px}}
@media(max-width:800px){.site-header{margin:10px 12px 0;border-radius:17px}.main-nav{padding:16px 20px;flex-wrap:wrap;gap:12px}.brand{width:160px}.prototype{margin-left:auto}.main-nav nav{order:3;width:100%;justify-content:space-between;gap:12px}.main-nav nav button{font-size:11px;padding:8px 0}.utility{padding:9px 20px}.utility span:last-child{display:none}.page{padding:24px 22px 35px}.hero{min-height:370px}.hero-content{padding:32px}.hero h1{font-size:45px;letter-spacing:-1.7px}.hero-caption{display:none}.course-layout{grid-template-columns:1fr}.course-layout aside{display:grid;grid-template-columns:1fr 1fr;gap:22px}.side-note{display:none}.story-card img{height:130px}.journey-strip{gap:17px}.journey-strip>div{display:block}.journey-strip .step-mark{margin-bottom:9px}.journey-strip h3{font-size:13px}.journey-strip p{font-size:11px}.lesson-grid{grid-template-columns:1fr}.lesson-sidebar{display:none}.lesson-title{font-size:38px}.sandbox-grid{grid-template-columns:1fr}.sandbox-config{grid-template-columns:1fr 1fr}.sandbox-visual img{aspect-ratio:1;height:auto;max-height:none}.practice-summary{margin-top:5px}.resource-grid{grid-template-columns:1fr 1fr}.story-split{gap:20px}.story-split .feature-image{height:250px}footer{margin:0 22px;flex-wrap:wrap;gap:12px}}
@media(max-width:520px){.intro-row{display:block}.intro-row .tag{margin-top:12px}.hero{min-height:370px}.hero-content{padding:26px}.hero h1{font-size:39px;letter-spacing:-1.5px}.hero p{font-size:13px}.journey-strip{margin-bottom:28px;gap:12px}.course-layout aside{grid-template-columns:1fr}.story-card{display:none}.feature-grid{grid-template-columns:1fr;gap:12px}.feature-grid>div{padding-top:12px}.feature-grid .key{font-size:22px;margin-bottom:5px}.feature-grid h3{font-size:17px}.story-split{grid-template-columns:1fr}.story-split .feature-image{height:220px}.timeline{gap:18px}.timeline b{font-size:20px}.lesson-title{font-size:34px}.lesson-top{flex-wrap:wrap}.lesson-tabs{gap:20px}.lesson-tabs button{font-size:11px}.wood-panel{grid-template-columns:70px 1fr;gap:19px}.wood-swatch{height:180px}.wood-panel h3{font-size:21px}.footprint{grid-template-columns:1fr}.form-grid,.sandbox-config{grid-template-columns:1fr}.sandbox-visual img{aspect-ratio:1.6;max-height:220px}.sandbox-head h1{font-size:36px}.resource-grid{grid-template-columns:1fr}.resource img{height:210px}.choices{gap:6px}.choice{font-size:11px;padding:9px 11px}.lesson-bottom{align-items:center}.lesson-bottom .btn{font-size:11px;padding:11px 16px}.page{padding:22px 18px 30px}.quiz-question{font-size:21px}.module h3{font-size:17px}.module p{font-size:11px}.module{gap:6px;grid-template-columns:35px 1fr 18px}.main-nav nav{gap:9px}.main-nav nav button{font-size:10px}.prototype{font-size:9px}.utility{font-size:10px}.facts{gap:12px}.facts>div{min-width:100px}.progress-card{padding:22px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

.build-lesson{border:1px solid #ccd5c1;border-radius:12px;padding:25px;margin:30px 0}.build-lesson h3{font-size:24px}.build-chain{list-style:none;padding:0;display:grid;gap:12px;margin:22px 0}.build-chain li{padding:16px 18px;background:var(--pale);border-radius:8px}.build-chain span{display:block;color:#66775a;font-size:10px;letter-spacing:1px;text-transform:uppercase;margin-bottom:7px}.build-chain strong{font-size:14px;font-weight:600}.build-warning{background:#f3e7ce;border:1px solid #cfb37c;border-left:4px solid #9b712a;border-radius:9px;padding:18px;margin:20px 0;color:#4f3c19}.build-warning .eyebrow{color:#79591d;font-size:9px;margin-bottom:10px}.build-warning h3{font-size:21px;margin:0 0 12px}.build-warning p{font-size:12px;color:#65502a;margin:0 0 12px;line-height:1.6}.build-warning p:last-child{margin:0}.wood-heat-note{background:var(--pale);border-radius:8px;padding:15px;font-size:12px}.wood-heat-note p{font-size:11px;margin:5px 0 0}

#build-warning:empty{display:none}#build-warning .build-warning{margin:0}.practice-summary .view-tradeoff-summary{background:#f3e7ce;border-left:3px solid #9b712a;border-radius:6px;padding:12px;color:#65502a}

.practice-open{padding-bottom:112px}.practice-return-bar{position:fixed;bottom:max(16px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);width:calc(100% - 48px);max-width:1264px;z-index:4;background:var(--white);border:1px solid #ccd5c1;border-radius:14px;box-shadow:0 8px 32px #1b321d20;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 20px}.practice-return-context{min-width:0}.practice-return-context>span{display:block;font-size:10px;color:var(--muted);margin-bottom:3px}.practice-return-context strong{font-size:13px;line-height:1.4;display:block;font-weight:600}.practice-return-bar .btn{flex-shrink:0}.practice-open #toast{bottom:130px}@media(max-width:520px){.practice-open{padding-bottom:168px}.practice-return-bar{width:calc(100% - 24px);bottom:max(10px,env(safe-area-inset-bottom));padding:13px 16px;gap:12px;flex-direction:column;align-items:stretch}.practice-return-context strong{font-size:12px}.practice-return-bar .btn{width:100%;padding:12px 16px}.practice-open #toast{bottom:175px}}

/* Guided learning flow */
.course-help{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 0 26px;border-bottom:1px solid var(--line);margin-bottom:26px}.course-help p{font-size:13px;margin:0;max-width:400px}.course-help .btn{flex-shrink:0}.is-locked{position:relative;cursor:not-allowed!important}.module.is-locked,.lesson-link.is-locked{color:#7b8274;background:#f0f0e7}.module.is-locked h3{color:#737a6d}.is-locked[data-lock-reason]:hover:after,.is-locked[data-lock-reason]:focus-visible:after{content:attr(data-lock-reason);position:absolute;z-index:10;bottom:calc(100% + 9px);left:0;width:max-content;max-width:min(300px,80vw);padding:11px 14px;border-radius:8px;background:var(--dark);color:white;box-shadow:0 4px 18px #0002;font-size:12px;line-height:1.5;text-align:left;font-weight:400;letter-spacing:0;text-transform:none;pointer-events:none}.lesson-link.is-locked:hover:after{left:0;bottom:auto;top:calc(100% + 4px)}.lesson-tabs{gap:20px}.lesson-tabs button{position:relative;display:flex;gap:8px;align-items:center}.activity-number{display:grid;place-items:center;width:22px;height:22px;border:1px solid #bdc8b1;border-radius:50%;font-size:10px;flex-shrink:0}.lesson-tabs button.active .activity-number{background:var(--deep);border-color:var(--deep);color:white}.tab-lock{font-size:9px}.lesson-tabs .is-locked{color:#8a9181}.how-to-link{font-size:11px;color:var(--deep);background:none;border:0;text-decoration:underline;text-underline-offset:4px;margin-left:auto}.lesson-open{padding-bottom:145px}.lesson-continue-bar{position:fixed;bottom:max(16px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);width:calc(100% - 48px);max-width:1264px;z-index:4;background:var(--white);border:1px solid #ccd5c1;border-radius:14px;box-shadow:0 8px 32px #1b321d20;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px 20px}.lesson-continue-bar>div{max-width:520px}.lesson-continue-bar .eyebrow{margin:0 0 5px;font-size:9px}.lesson-continue-bar p{font-size:12px;margin:0}.lesson-continue-bar .btn{flex-shrink:0;min-height:48px}.lesson-continue-bar .btn.is-locked{background:#dce3d3;color:#59664d;border-color:#ccd5c1}.lesson-open #toast{bottom:155px}.lesson-bottom p{margin:0;max-width:480px;font-size:12px}.narration{padding:22px 24px;background:#e8ede0;border:1px solid #d0dac3;border-radius:12px;margin:0 0 30px}.narration h3{font-size:22px}.narration p{font-size:13px}.narration .eyebrow{font-size:9px}.narration details summary{font-size:12px;color:var(--deep);cursor:pointer}.narration details p{margin:12px 0 0}.audio-controls{display:flex;align-items:center;gap:20px;margin-bottom:14px}.audio-controls progress{flex:1;accent-color:var(--deep);height:9px;min-width:70px}.narration #narration-status{margin-bottom:12px;font-size:12px}.quiz-instruction{background:#ecefe5;padding:14px 18px;border-radius:9px}.answer.draft{background:#e8edde;border-color:#73915e}.answer:disabled{opacity:1;cursor:default}.answer:disabled:hover{background:transparent}.answer.selected:disabled{background:#e4ecd9}.answer.wrong:disabled{background:#f4e9d9}.quiz-feedback{border-radius:10px;padding:20px;margin:22px 0;border:1px solid #b9cba6;background:#e7eedc;color:#284c24}.quiz-feedback.incorrect{border-color:#d3b98c;background:#f3ead9;color:#684e27}.quiz-feedback p{font-size:13px;color:inherit;margin:10px 0}.quiz-feedback p:last-child{margin-bottom:0}.quiz-feedback .btn{margin-top:8px}.cedar-comparison{margin:32px 0}.cedar-comparison>h3{font-size:24px}.cedar-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.cedar-columns>section{padding:20px 18px;border:1px solid #d2d9c8;border-radius:10px;background:#f0f1e8}.cedar-columns h4{font-size:18px;line-height:1.25;margin:14px 0 10px;font-weight:600;letter-spacing:-.4px}.cedar-columns .tag{font-size:9px}.cedar-columns dl{margin-bottom:0}.cedar-columns dt{font-size:10px;text-transform:uppercase;letter-spacing:.6px;color:#6c795e;margin-top:16px}.cedar-columns dd{font-size:12px;line-height:1.65;margin:5px 0 0}.value-pick{font-size:10px;color:var(--deep);font-weight:700}.completion-page>h1{margin:22px 0}.completion-intro{max-width:680px}.completion-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:40px;align-items:start;margin-top:35px}.completion-grid>section>h2{font-size:28px}.certificate-actions{margin:22px 0 15px}.certificate{background:var(--white);border:2px solid #9ab281;outline:1px solid #d0dac4;outline-offset:-10px;border-radius:4px;text-align:center;padding:38px 32px}.certificate>img{width:170px;display:block;margin:0 auto 25px}.certificate>h2{font-size:31px!important;letter-spacing:-1px}.certificate>h3{font-size:24px}.certificate>p{font-size:13px}.certificate>strong{display:block;font-size:30px;margin:15px 0;color:var(--deep)}.certificate .certificate-note{font-size:10px;border-top:1px solid var(--line);padding-top:18px;margin:25px 0 0}.welcome-heading{display:flex;align-items:center;justify-content:space-between;gap:15px}.welcome-heading .eyebrow{margin-bottom:0}.close-intro{border:0;background:none;font-size:26px;color:var(--muted);padding:0 8px}#learning-dialog{background:var(--paper);color:var(--ink);border:1px solid #d0dac4;border-radius:20px;padding:30px;max-width:590px;width:calc(100% - 32px);max-height:calc(100dvh - 40px);overflow:auto;box-shadow:0 20px 80px #0003}#learning-dialog::backdrop{background:#17241bb3}#learning-dialog h2{font-size:34px;margin:23px 0 15px}#learning-dialog>p{font-size:14px}.welcome-steps{list-style:none;padding:0;display:grid;gap:19px;margin:24px 0}.welcome-steps li{display:flex;gap:15px}.welcome-steps li>span{display:grid;place-items:center;width:28px;height:28px;flex:0 0 28px;background:var(--deep);color:white;border-radius:50%;font-size:12px}.welcome-steps h3{font-size:17px;margin:2px 0 6px}.welcome-steps p{font-size:13px;margin:0;line-height:1.6}.welcome-note{background:#e9eddf;border-radius:10px;padding:15px 18px;margin:20px 0}.welcome-note strong{font-size:12px}.welcome-note p{font-size:12px;margin:5px 0 0}.lesson-tabs button,#lesson-continue{position:relative}.tour-highlight{z-index:102!important;outline:3px solid #6d9e4d!important;outline-offset:5px!important;box-shadow:0 0 0 8px var(--paper)}#coach-layer{position:fixed;inset:0;z-index:101}.tour-shade{position:absolute;inset:0;background:#14251999}.coach-card{position:fixed;background:var(--paper);border:1px solid #bdcdb0;border-radius:13px;padding:22px;box-shadow:0 15px 50px #0003;max-width:calc(100% - 32px)}.coach-card h3{font-size:23px;margin:0 0 12px}.coach-card p{font-size:13px;line-height:1.65}.coach-card .eyebrow{font-size:9px}.coach-card .btn{font-size:11px;padding:10px 15px}.coach-card .btn.text{padding-left:0}.coach-card .row{gap:12px}
@media(max-width:1100px){.lesson-continue-bar .btn{max-width:380px}.cedar-columns>section{padding:17px 14px}.cedar-columns h4{font-size:16px}}
@media(max-width:800px){.lesson-tabs{gap:16px}.lesson-tabs button{font-size:11px}.completion-grid{grid-template-columns:1fr;gap:25px}.lesson-continue-bar{align-items:stretch}.lesson-continue-bar .btn{max-width:310px}.course-help{align-items:flex-start}}
@media(max-width:600px){.lesson-open{padding-bottom:190px}.lesson-continue-bar{width:calc(100% - 24px);bottom:max(10px,env(safe-area-inset-bottom));flex-direction:column;gap:12px;padding:14px 16px}.lesson-continue-bar .btn{max-width:none;width:100%;font-size:12px}.lesson-open #toast{bottom:195px}.lesson-tabs{gap:10px}.lesson-tabs button{font-size:10px;gap:5px;align-items:flex-start;text-align:left;line-height:1.4}.activity-number{width:20px;height:20px;flex:0 0 20px}.tab-lock{display:none}.cedar-columns{grid-template-columns:1fr}.cedar-columns>section{padding:22px}.cedar-columns h4{font-size:22px}.course-help{flex-direction:column;gap:14px}.audio-controls{flex-direction:column;align-items:stretch;gap:15px}.audio-controls progress{width:100%}.narration{padding:20px}.lesson-bottom{align-items:flex-start}.lesson-bottom p{max-width:100%}.certificate{padding:30px 23px}#learning-dialog{padding:23px}#learning-dialog h2{font-size:29px}}
@media print{@page{size:A4 landscape;margin:14mm}body.completion-open{background:white;padding:0!important}body.completion-open>*:not(#app){display:none!important}.completion-page{padding:0;max-width:none}.completion-page>*:not(.completion-grid),.completion-grid>section:not(.certificate){display:none!important}.completion-grid{display:block;margin:0}.certificate{break-inside:avoid;border-radius:0;padding:12mm;box-shadow:none}.certificate>h2{font-size:30px!important}.certificate>strong{font-size:32px}.certificate .certificate-note{margin-top:18px}}

.narration-time{white-space:nowrap;color:var(--deep);font-variant-numeric:tabular-nums}