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.two-fields{display:grid;grid-template-columns:1fr 1fr;gap:12px}.site-preview{width:100%;height:470px;border:0;border-top:1px solid var(--line);background:#faf9f5}.site-link-box{padding:18px 22px;background:#edf4e4;border-top:1px solid #d4e3c6;font-size:12px;line-height:1.8;overflow-wrap:anywhere}.site-link-box a{color:#3f6439;text-decoration:underline;font-weight:650}.site-link-box button{display:inline-block;background:transparent;color:#5c6a53;font-size:11px;text-decoration:underline;margin:8px 10px 0 0;padding:0}.site-error{padding:0 22px;font-size:12px;color:#a44531}.sheet-builder{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:white;margin-top:20px}.upload-zone{text-align:center;padding:30px 20px;background:#f0edf8}.upload-symbol{display:inline-grid;place-items:center;width:45px;height:45px;border:1px solid #d5caec;border-radius:12px;font-size:25px;background:white;color:var(--purple);margin-bottom:15px}.upload-zone h3{font-size:19px;max-width:330px;margin:0 auto 10px}.upload-zone p{font-size:11px;color:var(--muted)}.upload-zone .button-row{justify-content:center}.file-button{position:relative;overflow:hidden;cursor:pointer}.file-button input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%}.file-button:focus-within{outline:3px solid #b794f4}.sheet-controls{padding:18px;display:grid;grid-template-columns:1fr 1fr;gap:12px;border-top:1px solid var(--line)}.sheet-controls label{font-size:10px;display:grid;gap:5px}.sheet-controls select{font-size:11px}.sheet-controls button{align-self:end;font-size:10px}#sheet-error{font-size:12px;color:#9b4a3c;margin:0;padding:0 18px}#sheet-error:not(:empty){padding:16px 18px}.data-dashboard{padding:22px}.dashboard-heading .eyebrow{font-size:8px;color:var(--purple)}.dashboard-heading h3{font-size:24px;margin-top:9px}.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:25px}.kpis>div{background:#f5f4f8;border-radius:10px;padding:14px 12px}.kpis small{font-size:9px;display:block;line-height:1.4}.kpis strong{font-size:25px;font-weight:600;letter-spacing:-.04em;display:block;margin-top:10px;overflow-wrap:anywhere}.data-dashboard h4{font-size:12px}.bars{display:grid;gap:15px;margin-bottom:27px}.bar-row{display:grid;grid-template-columns:minmax(45px,80px) 1fr 65px;gap:10px;font-size:11px;align-items:center}.bar-row>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.bar-row>strong{text-align:right;font-weight:550}.bar-track{height:24px;background:#f2f0f7;border-radius:4px;overflow:hidden}.bar-fill{background:#a68cde;height:100%;border-radius:4px;transition:width .4s}.bar-fill.negative{background:#d69479}.data-dashboard summary{font-size:11px;font-weight:650;cursor:pointer;margin:15px 0}.table-scroll{overflow:auto;max-height:260px;border:1px solid var(--line);border-radius:7px}table{border-collapse:collapse;width:100%;font-size:10px;text-align:left}th,td{padding:9px 11px;border-bottom:1px solid var(--line);white-space:nowrap}th{background:#f6f5f9;position:sticky;top:0}.export-page{padding:40px 20px}.export-page main{max-width:850px;margin:auto}.export-page main>h1{font-size:32px}.export-page main>label{display:block;max-width:300px;font-size:12px}.export-page .data-dashboard{background:white;border-radius:16px;margin-top:20px}.celebration{text-align:center;padding:38px 25px;border:1px solid #d4d7be;background:#f0f2df;border-radius:18px;margin-bottom:24px}.celebration .medal{display:grid;place-items:center;border-radius:50%;width:86px;height:86px;background:#ddf18f;color:#566d1c;font-size:47px;margin:0 auto 22px}.celebration h2{font-size:31px;line-height:1.15}.celebration p{font-size:13px;max-width:420px;margin:0 auto 20px;color:#6b715e}.celebration .button-row{justify-content:center}.notebook{border:1px solid var(--line);border-radius:16px;background:white;padding:26px;margin-top:25px}.notebook h2{font-size:21px}.notebook p{font-size:12px;color:var(--muted)}.prompt-card{border:1px solid var(--line);border-radius:12px;padding:20px;margin:16px 0;background:white}.prompt-card h3{font-size:15px}.prompt-card pre{white-space:pre-wrap;font:12px/1.8 ui-monospace,monospace;color:#626172}.source-list{font-size:12px;line-height:2}.source-list a{text-decoration:underline;color:var(--purple)}.network-notice{padding:12px 20px;background:#fff2db;color:#7e5f29;font-size:12px;border-bottom:1px solid #ead6b3}.error-page{padding:60px;max-width:700px;margin:auto}.error-page p{color:var(--muted)}@keyframes breathe{50%{transform:rotate(18deg) translateY(-8px)}}@keyframes pulse{50%{opacity:.4}}@keyframes blink{50%{opacity:0}}@keyframes arrive{from{transform:translateY(9px);opacity:0}to{transform:translateY(0);opacity:1}}@media(min-width:1500px){.course-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.hero-art{min-height:340px}}@media(max-width:1150px){.layout{grid-template-columns:205px minmax(0,1fr)}.sidebar{padding:28px 15px}.main{padding:28px}.topbar{padding:0 28px}.hero-copy{padding:29px}.hero-copy h2{font-size:37px}.hero-art{overflow:hidden}.art-card.one{left:0}.art-card.three{right:-5px}.lesson-columns{grid-template-columns:minmax(0,1fr)}.learning-aside{display:grid;grid-template-columns:.7fr 1fr;gap:25px}.course-grid{gap:12px}.card-body{padding:15px}}@media(max-width:800px){.layout{grid-template-columns:1fr}.sidebar{display:none}.topbar{height:67px;padding:0 22px}.mobile-brand{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:650}.mobile-brand .brand-symbol{width:29px;height:29px;font-size:23px;border-radius:8px}.breadcrumb{display:none}.top-stats{gap:10px}.main{padding:25px 22px 40px}.intro-heading{align-items:flex-start;flex-direction:column;gap:9px}.intro-heading h1{font-size:29px}.hero-card{grid-template-columns:1fr 1fr;min-height:270px}.hero-copy{padding:27px}.hero-copy h2{font-size:34px}.hero-art{min-height:270px}.big-spark{font-size:160px}.orbit{width:220px;height:220px}.orbit.two{width:290px}.art-card{padding:10px;font-size:8px}.art-card.one{top:22px;left:-5px}.art-card.two{right:10px;bottom:40px}.art-card.three{top:65px;right:3px}.art-card .code-line{font-size:8px}.hero-caption{display:none}.course-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.overview-row{gap:10px}.stat-card{padding:13px 10px;gap:9px}.stat-card strong{font-size:15px}.stat-card small{font-size:9px}.stat-icon{width:29px;height:29px;flex:none;font-size:16px}.learning-aside{padding:20px}.square span{font-size:32px}.mission-title h1{font-size:35px}}@media(max-width:500px){.topbar{padding:0 18px}.top-stats .completion-count{display:none}.main{padding:23px 17px 40px}.welcome-line{font-size:11px}.intro-heading h1{font-size:27px}.intro-heading p{font-size:11px}.hero-card{display:block}.hero-copy{padding:27px 25px 19px}.hero-copy h2{font-size:37px;max-width:280px}.hero-copy p{font-size:12px;max-width:250px}.hero-art{min-height:170px;margin-top:-10px}.big-spark{font-size:130px;transform:rotate(12deg)}.orbit{width:170px;height:170px}.orbit.two{width:260px;height:120px}.art-card.one{top:12px;left:20px}.art-card.three{top:8px;right:24px}.art-card.two{right:25px;bottom:16px}.hero-copy .primary{position:relative;z-index:2}.overview-row{grid-template-columns:repeat(3,1fr);margin:15px 0 25px;gap:7px}.stat-card{display:block;padding:12px 10px}.stat-icon{width:25px;height:25px;margin-bottom:8px;border-radius:7px;font-size:14px}.stat-card strong{font-size:15px}.stat-card small{font-size:8px}.section-head h2{font-size:18px}.section-head small{font-size:9px}.course-grid{gap:12px}.card-visual{height:95px}.card-visual .symbol{font-size:51px}.card-body{padding:14px 12px}.card-body h3{font-size:14px;line-height:1.35}.card-body p{font-size:10px;margin-bottom:14px}.card-footer{font-size:9px}.card-body .eyebrow{font-size:7px}.footer-note{display:block;font-size:10px}.footer-note span{display:block;margin-top:8px}.lesson-header{margin-bottom:17px}.lesson-progress{gap:8px;font-size:9px}.progress-track{width:65px}.mission-title h1{font-size:32px;letter-spacing:-.045em}.mission-title>p{font-size:12px}.mission-title .eyebrow{font-size:9px}.learning-aside{display:block}.learning-aside h2{font-size:15px}.learning-aside p,.learning-aside li{font-size:12px}.quiz-card{padding:20px 17px}.quiz-card h2{font-size:19px}.choice{padding:12px 10px;font-size:12px}.quiz-actions{gap:8px}.quiz-actions .primary,.quiz-actions .quiet{font-size:11px;padding:11px 13px}.pattern-stage{padding:28px 17px}.tokens{gap:5px}.token{font-size:15px;padding:10px 8px}.complete-banner{padding:17px;flex-direction:column;align-items:stretch}.complete-banner .primary{width:100%}.build-actions{align-items:flex-start;flex-direction:column}.build-actions .button-row{width:100%}.lab-bar{font-size:9px;padding:13px}.practice-label{font-size:8px}.prompt-window{padding:18px}.typed-prompt{font-size:11px}.app-output{padding:22px 12px}.chess-app{padding:12px}.square span{font-size:29px}.square small{font-size:6px}.export-row{align-items:flex-start;flex-direction:column}.site-form{padding:18px}.site-form .two-fields{grid-template-columns:1fr}.site-preview{height:480px}.kpis{gap:6px}.kpis>div{padding:12px 8px}.kpis strong{font-size:22px}.kpis small{font-size:8px}.data-dashboard{padding:18px 14px}.bar-row{grid-template-columns:60px 1fr 52px;font-size:10px;gap:7px}.upload-zone{padding:26px 16px}.upload-zone h3{font-size:18px}.error-page{padding:35px 22px}.celebration{padding:30px 20px}.celebration h2{font-size:27px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
[hidden]{display:none!important}#main:focus{outline:none}.mobile-tabs{display:none}@media(max-width:800px){.mobile-tabs{display:flex;gap:6px;padding:10px 17px;border-bottom:1px solid var(--line);font-size:11px}.mobile-tabs a{padding:7px 11px;border-radius:7px}.mobile-tabs .active{background:var(--purple-soft);color:var(--purple);font-weight:650}}
.skip-link:not(:focus){clip-path:inset(50%);width:1px;height:1px;padding:0;overflow:hidden}

/* Lessons teach in reading order on every screen: explain, check, practice. */
.lesson-flow{width:100%;min-width:0;max-width:920px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr);gap:26px}.lesson-explanation{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:30px}.lesson-explanation h2,.lesson-practice>h2{margin:12px 0 16px}.lesson-explanation .why{color:var(--muted)}.lesson-explanation ul{padding-left:22px;margin:20px 0 26px;line-height:1.8}.lesson-explanation li+li{margin-top:12px}.lesson-explanation .video-card{margin-bottom:0}.lesson-practice{min-width:0;scroll-margin-top:24px;outline:none}.lesson-practice>p{max-width:750px;color:var(--muted)}.lesson-practice>.eyebrow{color:var(--purple)}.concept-practice{padding:28px;background:white;border:1px solid var(--line);border-radius:var(--radius)}.concept-practice label{display:grid;gap:8px;font-size:14px;margin-bottom:18px}.concept-practice input{width:100%;min-height:46px;padding:12px;border:1px solid var(--line);border-radius:9px}.concept-practice [role=status]{margin:20px 0 0}.mission-status{display:flex;flex-wrap:wrap;gap:12px 24px;font-size:14px;color:var(--muted)}.mission-status small{flex-basis:100%}.mission-navigation{display:flex;justify-content:space-between;align-items:center;gap:16px;border-top:1px solid var(--line);padding-top:22px}.feedback .secondary{margin-top:8px}.lesson-flow #complete-area:empty{display:none}@media(max-width:600px){.lesson-explanation,.concept-practice{padding:21px}.mission-navigation{align-items:stretch;flex-direction:column}.mission-navigation a{text-align:center}.lesson-flow{gap:22px}}
/* One next step, with optional course details kept out of the main path. */
.focused-layout{min-height:100dvh}.academy-header{max-width:1120px;margin:auto;padding:24px 36px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}.academy-header .brand{margin:0}.simple-progress{width:220px;color:var(--muted);font-size:12px}.simple-progress .progress-track{width:100%;margin-top:10px}.focused-layout>.main{max-width:1120px;margin:0 auto;padding:42px 36px}.academy-footer{display:flex;justify-content:center;flex-wrap:wrap;gap:24px;padding:24px;font-size:12px;color:var(--muted)}.welcome-home{max-width:920px;margin:30px auto}.welcome-home>h1{margin:16px 0}.welcome-home>p:not(.eyebrow){font-size:18px;color:var(--muted);max-width:620px}.continue-card{margin-top:32px;min-height:350px}.continue-card .hero-copy{padding:40px}.continue-card h2{font-size:clamp(30px,4vw,48px);line-height:1.1}.continue-card small{display:block;max-width:340px;margin-top:18px}.continue-art{display:flex;align-items:center;justify-content:center;flex-direction:column;background:#e6e1fa;color:#5e43bd;gap:18px;padding:35px;font-size:30px;font-weight:650;line-height:1.2;letter-spacing:-.04em}.continue-art>span{font-size:100px;line-height:1}.course-outline{margin-top:28px;border-top:1px solid var(--line);padding-top:20px}.course-outline summary{cursor:pointer;font-size:14px;color:var(--muted);padding:8px 0}.course-outline ol{padding:0;list-style:none}.course-outline li{display:flex;align-items:center;gap:16px;padding:15px 0;border-bottom:1px solid var(--line);font-size:14px}.outline-number{font-size:12px;min-width:28px;color:var(--muted)}.course-outline li small{margin-left:auto}.course-outline .current{color:var(--purple);font-weight:650}.course-outline .done .outline-number{color:var(--green)}.course-outline .locked{color:#767879}
/* Prepared builds assemble visibly before the working project is mounted. */
.build-replay{width:100%;max-width:640px;background:#fbfaf7;border:1px solid #dad9e3;border-radius:14px;overflow:hidden;box-shadow:0 10px 35px #24203e0a}.replay-toolbar{display:flex;align-items:center;gap:9px;border-bottom:1px solid #e1dfe9;padding:14px 18px;font-size:10px;letter-spacing:.1em;font-weight:700;background:white}.replay-toolbar small{margin-left:auto;font-size:9px;letter-spacing:.05em}.replay-dot{width:7px;height:7px;border-radius:50%;background:var(--purple)}.replay-canvas{padding:25px;min-height:320px;display:grid;place-items:center;background:radial-gradient(#dad8e5 1px,transparent 1px);background-size:18px 18px}.replay-footer{background:white;padding:15px 18px;font-size:12px;color:var(--muted)}.replay-track{height:3px;background:#eeeaf6;border-radius:4px;margin-top:10px;overflow:hidden}.replay-track span{height:100%;display:block;background:var(--purple);width:0}.draft-board{position:relative;width:min(100%,360px);aspect-ratio:1;border:2px solid #8d86a3;border-radius:5px;background:#eeeaf6;overflow:hidden;box-shadow:0 8px 24px #2c224e15;animation:frame-in .5s both}.draft-squares{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));height:100%}.draft-square{display:grid;place-items:center;position:relative;aspect-ratio:1;transition:background .55s}.draft-piece{font-family:Georgia,'Times New Roman',serif;font-size:clamp(20px,4vw,35px);line-height:1;opacity:0;transform:translateY(-16px) scale(.5);transition:opacity .35s,transform .45s;transition-delay:var(--piece-delay);color:#272132}.draft-piece.white-piece{color:#fff;text-shadow:0 1px 1px #222,-1px 0 #333,1px 0 #333,0 -1px #333}.draft-grid{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}.draft-grid path{fill:none;stroke:#8f86a5;stroke-width:2;stroke-dasharray:1600;stroke-dashoffset:1600;transition:stroke-dashoffset .8s;transition-delay:var(--line-delay)}.build-replay:not([data-build-stage="0"]) .draft-grid path{stroke-dashoffset:0}.build-replay:is([data-build-stage="2"],[data-build-stage="3"],[data-build-stage="4"]) .draft-square.light{background:#ece8f5}.build-replay:is([data-build-stage="2"],[data-build-stage="3"],[data-build-stage="4"]) .draft-square.dark{background:#a59ab9}.build-replay:is([data-build-stage="2"],[data-build-stage="3"],[data-build-stage="4"]) .neon .draft-square.light{background:#215369}.build-replay:is([data-build-stage="2"],[data-build-stage="3"],[data-build-stage="4"]) .neon .draft-square.dark{background:#3d2966}.build-replay:is([data-build-stage="3"],[data-build-stage="4"]) .draft-piece{opacity:1;transform:translateY(0) scale(1)}
.site-build-animation{padding:24px;background:#f0eff5}.site-build-animation .build-replay{margin:auto;max-width:760px}.draft-site{width:100%;background:white;padding:16px;border:1px dashed #aaa5b8;border-radius:7px;--site-accent:#6d45db;--site-light:#ece6ff;animation:frame-in .5s both}.draft-site.ocean{--site-accent:#126d91;--site-light:#e1f4fb}.draft-site.sunset{--site-accent:#b54f24;--site-light:#fff0df}.draft-site.forest{--site-accent:#27664d;--site-light:#e5f0e5}.draft-nav,.draft-hero,.draft-about{border:1px dashed #b9b4c9;padding:15px;margin-bottom:10px;opacity:.2;transform:translateY(8px);transition:opacity .5s,transform .5s,background .6s,border-color .6s}.draft-nav{display:flex;justify-content:space-between;gap:12px;font-size:11px;min-height:44px}.draft-hero{min-height:215px}.draft-about{min-height:90px;margin-bottom:0}.draft-hero small{font-size:8px;letter-spacing:.1em;color:var(--site-accent);min-height:12px;display:block}.draft-hero h3{font-size:clamp(26px,4vw,46px);line-height:1.05;letter-spacing:-.055em;margin:12px 0;min-height:40px;overflow-wrap:anywhere}.draft-hero p,.draft-about p{font-size:11px;line-height:1.5;min-height:32px;overflow-wrap:anywhere}.draft-about strong{font-size:15px}.draft-cta{font-size:10px;display:inline-block;min-width:100px;min-height:25px;padding:8px 14px;border-radius:25px;border:1px dashed #b9b4c9}.draft-art{display:flex;justify-content:center;align-items:center;gap:20px;height:65px;border-radius:10px;margin-top:15px;transition:background .6s}.draft-art i{width:36px;height:36px;border-radius:50%;opacity:0;background:var(--site-accent);transition:opacity .6s}.draft-art i:nth-child(2){border-radius:8px;transform:rotate(25deg)}.draft-art i:nth-child(3){border-radius:50% 50% 0 0}.build-replay:not([data-build-stage="0"]) :is(.draft-nav,.draft-hero,.draft-about){opacity:1;transform:translateY(0)}.build-replay:is([data-build-stage="2"],[data-build-stage="3"],[data-build-stage="4"]) .draft-hero{background:var(--site-light);border-color:transparent}.build-replay:is([data-build-stage="2"],[data-build-stage="3"],[data-build-stage="4"]) .draft-nav{border-color:transparent;border-bottom-color:#dedce5}.build-replay[data-build-stage="4"] .draft-cta{background:var(--site-accent);border-color:transparent;color:white}.build-replay[data-build-stage="4"] .draft-art i{opacity:.65}.build-replay[data-build-stage="4"] .draft-about{border-color:transparent}
.draft-calculator{background:white;width:min(100%,285px);border-radius:18px;padding:20px;border:1px solid #d9d5e6;animation:frame-in .5s both}.draft-calculator.galaxy{background:#102035}.draft-display{height:65px;border:1px dashed #bdb7cb;margin-bottom:14px;border-radius:10px;padding:10px;text-align:right;font-size:30px;opacity:0;transition:opacity .4s}.draft-display span{opacity:0}.draft-keys{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.draft-keys>div{height:42px;background:#f3f1f7;border-radius:10px;display:grid;place-items:center;opacity:0;transform:scale(.65);transition:opacity .3s,transform .4s;transition-delay:var(--piece-delay)}.draft-keys>div:nth-child(4n){background:#e4ddfc;color:#6d45db}.draft-keys span{opacity:0;transition:opacity .4s}.build-replay:not([data-build-stage="0"]) .draft-display{opacity:1}.build-replay:is([data-build-stage="2"],[data-build-stage="3"],[data-build-stage="4"]) .draft-keys>div{opacity:1;transform:scale(1)}.build-replay:is([data-build-stage="3"],[data-build-stage="4"]) :is(.draft-keys span,.draft-display span){opacity:1}.draft-calculator.galaxy .draft-display{color:#8eddfd}.draft-calculator.galaxy .draft-keys>div{background:#1e3a55;color:#9de6ff}
@keyframes frame-in{from{opacity:0;transform:scale(.94) translateY(10px)}to{opacity:1;transform:none}}@media(max-width:600px){.academy-header{padding:18px;gap:14px}.academy-header .brand small{display:none}.academy-header .brand{font-size:14px;gap:8px}.simple-progress{width:130px;font-size:10px}.academy-header>.quiet{font-size:12px}.focused-layout>.main{padding:26px 18px}.welcome-home{margin:12px auto}.continue-card{grid-template-columns:1fr;min-height:0}.continue-card .hero-copy{padding:26px}.continue-art{display:none}.replay-canvas{padding:14px;min-height:260px}.site-build-animation{padding:12px}.draft-site{padding:10px}.draft-nav,.draft-hero,.draft-about{padding:10px}.course-outline li{font-size:12px;gap:10px}.course-outline small{font-size:10px}}@media(prefers-reduced-motion:reduce){.build-replay *{animation:none!important;transition:none!important}}

/* The lesson is one paced, interactive presentation. Each scene owns the canvas. */
[hidden]{display:none!important}
.player-main{max-width:1440px;width:100%;padding:16px 28px 32px!important}
.player-main .lesson-header{margin-bottom:16px;align-items:center;gap:20px}
.player-main .lesson-header>div{text-align:right}.player-lesson-name{display:block;font-size:16px;margin-top:4px}
.player-main .quiet,.player-tools{font-size:15px}.player-main .eyebrow{font-size:12px;letter-spacing:.13em;color:#5b5280}
.immersive-player{border:1px solid #dce3eb;border-radius:28px;background:radial-gradient(ellipse at 85% 20%,#e5e5ff80,transparent 60%),linear-gradient(130deg,#fafcff,#f0f5fa);box-shadow:0 18px 55px #26365b09;overflow:clip}
.player-canvas{min-width:0}.player-scene{min-height:570px;padding:52px 64px 30px;position:relative}
.player-scene.scene-active{animation:scene-arrive .45s ease both}
.scene-copy{max-width:890px;margin:auto;text-align:center}.scene-copy h1{font-size:clamp(32px,3.3vw,48px);letter-spacing:-.04em;line-height:1.15;margin:16px auto 22px;max-width:800px;color:#252c40}
.scene-lead{font-size:21px;line-height:1.65;color:#424b60;max-width:780px;margin:0 auto 32px}
.scene-visual{max-width:920px;margin:32px auto;min-height:180px;display:grid;place-items:center}
.scene-note{display:flex;gap:15px;align-items:center;max-width:800px;margin:30px auto 0;color:#4d5267}
.scene-note p{font-size:17px;line-height:1.6;margin:0}.guide-mark{flex:0 0 40px;height:40px;display:grid;place-items:center;border-radius:50%;background:#e2ddfa;font-size:27px;color:#6049ad}
.story-items{display:flex;gap:18px;width:100%;align-items:stretch}.story-item{position:relative;flex:1;background:#ffffffd9;border:1px solid #dce1ec;border-radius:20px;padding:24px;min-width:0;box-shadow:0 8px 18px #24314d05;display:flex;flex-direction:column;gap:14px;animation:story-rise .65s both;animation-delay:calc(var(--item)*.22s + .12s)}
.story-item-number{font:600 13px/1.5 ui-monospace,monospace;color:#6b59a2}.story-item strong{font-size:24px;letter-spacing:-.025em;line-height:1.2;color:#35304a}.story-item>span:last-child{font-size:19px;line-height:1.5;color:#50586c}
.visual-flow .story-item:not(:last-child):after{content:'→';position:absolute;right:-17px;top:47%;font-size:23px;color:#7862b9;z-index:1}
.visual-chat{max-width:740px;flex-direction:column;gap:16px}.visual-chat .story-item{padding:20px 26px;gap:9px;width:88%;border-radius:22px 22px 22px 5px}.visual-chat .story-item:first-child{margin-left:auto;background:#eae5fc;border-color:#ddd2f9;border-radius:22px 22px 5px 22px}.visual-chat .story-item-number{display:none}.visual-chat .story-item strong{font-size:15px}.visual-chat .story-item>span:last-child{font-size:22px;color:#39314e}
.visual-compare .story-item:first-child{background:#eeeafc}.visual-checks .story-item-number{font-size:0}.visual-checks .story-item-number:before{content:'✓';font-size:24px;color:#347456}
.visual-apps .story-item{align-items:center;text-align:center;padding:25px 18px}.visual-apps .story-item-number{font-size:0;width:64px;height:64px;border-radius:19px;background:#e6e2fa;display:grid;place-items:center}.visual-apps .story-item-number:before{content:'+';font-size:40px}.visual-apps .story-item:nth-child(2) .story-item-number{background:#fff0cc}.visual-apps .story-item:nth-child(2) .story-item-number:before{content:'☀';color:#a46d13}.visual-apps .story-item:nth-child(3) .story-item-number{background:#dceee4}.visual-apps .story-item:nth-child(3) .story-item-number:before{content:'…';color:#39735a}
.sentence-demo{text-align:center;width:100%}.sentence-line{font-size:clamp(25px,3vw,40px);line-height:1.7;letter-spacing:-.025em;padding:30px 16px}.sentence-line [data-ending]{background:#e0d6fa;padding:8px 16px;border-radius:12px;color:#513b94;font-weight:650;box-decoration-break:clone}.sentence-context{font-size:18px;margin-bottom:24px;color:#52596e}
.player-main button,.player-main .primary,.player-main .secondary{min-height:48px}.player-main .primary,.player-main .secondary{font-size:17px;padding:14px 24px;border-radius:12px}
.player-nav{position:sticky;bottom:0;z-index:5;display:grid;grid-template-columns:1fr minmax(160px,1fr) 1fr;align-items:center;gap:18px;padding:20px 30px;background:#f9fbfbed;border-top:1px solid #dce3eb;backdrop-filter:blur(16px)}
.player-nav>button{justify-self:start;min-width:125px}.player-nav #scene-next{justify-self:end}.scene-position{text-align:center;display:grid;gap:7px;font-size:15px;color:#51566a}.scene-position>span:first-child{font-weight:650;color:#31354a}.scene-position>span:last-child{font-size:13px;line-height:1.4}.scene-dots{display:flex;gap:6px;justify-content:center}.scene-dots i{width:6px;height:6px;border-radius:50%;background:#d8dce4}.scene-dots i.past{background:#b3a4dc}.scene-dots i.active{width:22px;border-radius:5px;background:#6b4bea}
.player-tools{display:flex;justify-content:space-between;align-items:center;gap:20px;margin:20px 10px;color:#5e6374;line-height:1.5}.player-tools button{flex-shrink:0;min-height:44px}
.cinema-scene{padding-top:36px}.cinema-scene .scene-copy h1{font-size:36px;margin-bottom:12px}.cinema-scene .scene-lead{font-size:18px;margin-bottom:20px}.cinema-scene .video-card{max-width:850px;margin:0 auto;border-radius:16px;box-shadow:0 10px 30px #28365b12}.cinema-scene video{max-height:450px;object-fit:contain;background:#edf2f8}.video-caption{font-size:14px}.transcript{font-size:18px;line-height:1.7;max-height:none}
.question-scene{display:grid;align-content:center}.question-scene .quiz-card{background:none;padding:0;border:0;box-shadow:none;max-width:850px;width:100%;margin:auto}.question-scene h2{font-size:32px;line-height:1.3;margin:20px 0 26px}.question-scene .quiz-label{font-size:12px}.question-scene .choice{font-size:19px;line-height:1.55;padding:18px 22px;border-radius:16px;background:#ffffffb8}.question-scene .choice.selected{background:#eee8fd;border-color:#8164cc}.question-scene .feedback,.question-scene .hint{font-size:18px;line-height:1.6}.question-scene .feedback strong{display:block;margin-bottom:8px}
.practice-scene{padding:30px 45px}.practice-scene .scene-copy h1{font-size:34px;margin:10px auto 24px}.practice-scene #lesson-practice{max-width:1040px;margin:auto}.practice-scene .lab-card,.practice-scene .site-builder{box-shadow:none;border:0;background:#ffffff91;border-radius:20px}.practice-scene .lab-bar{font-size:15px;padding:16px 22px}.practice-label{font-size:11px!important}.practice-scene .typed-prompt{font-size:18px;line-height:1.65}.prompt-avatar{width:42px;font-size:13px}.practice-scene .prompt-window{padding:22px 28px}.practice-scene .build-actions{padding:18px 28px}.practice-scene .build-actions p,.practice-scene .practice-task,.practice-scene .build-status{font-size:17px;line-height:1.6}.practice-scene .practice-task strong{display:block;font-size:20px;margin-bottom:8px}.practice-scene .app-output{padding:24px;min-height:0}.practice-scene .app-output:empty{display:none}.practice-scene .concept-practice{border:0;background:transparent;padding:12px;max-width:800px;margin:auto;font-size:20px}.practice-scene .concept-practice h3{font-size:27px}.practice-scene label{font-size:17px}.practice-scene input,.practice-scene textarea,.practice-scene select{font-size:18px;min-height:48px}.practice-scene .mission-status{font-size:15px;max-width:850px;margin:20px auto}.practice-scene .pattern-stage{font-size:18px}.practice-scene .training-status{font-size:19px}.practice-scene .micro{font-size:14px}.practice-scene .chess-status{font-size:18px}.practice-scene .calc-key{font-size:23px;min-height:52px}.practice-scene .export-row{font-size:15px}.practice-scene #practice-save-error{color:#9f3730;font-size:18px;margin:12px 0}.finish-scene{display:grid;place-items:center}.finish-scene #complete-area{width:100%}.finish-scene .complete-banner{background:transparent;border:0;display:flex;flex-direction:column;text-align:center;gap:36px}.finish-scene .complete-banner strong{font-size:38px}.finish-scene .complete-banner small{font-size:18px;margin:18px 0}.finish-scene .celebration{padding:20px;background:transparent}
.story-table{display:grid;grid-template-columns:1fr 1fr;width:min(100%,540px);border:1px solid #d7deeb;border-radius:18px;overflow:hidden;background:#fff;font-size:21px}.story-table>div{padding:14px 24px;border-bottom:1px solid #e3e6ed}.story-table>div:nth-child(-n+2){background:#e5dff6;font-weight:650}.story-table>div:nth-child(even){border-left:1px solid #e3e6ed}.story-table p{grid-column:1/-1;font-size:16px;padding:18px 24px;margin:0;color:#555c70}.story-chart{width:min(100%,650px);background:white;border-radius:20px;padding:30px}.story-chart>div{display:grid;grid-template-columns:85px 1fr 60px;gap:16px;align-items:center;margin:20px 0;font-size:20px}.story-chart i{display:block;width:var(--bar);height:36px;border-radius:5px;background:#9476da;transform-origin:left;animation:bar-grow 1s both}.story-chart>div:nth-child(2) i{background:#64b49a}.story-chart>strong{display:block;text-align:right;padding-top:16px;border-top:1px solid #eee;font-size:24px}
.story-browser{width:min(100%,640px);border:1px solid #d4dcec;border-radius:18px;background:white;overflow:hidden;padding:0 28px 24px;box-shadow:0 18px 35px #24314d0b}.story-browser-top{display:flex;gap:6px;align-items:center;border-bottom:1px solid #eee;margin:0 -28px 24px;padding:14px 20px;font-size:13px;color:#666}.story-browser-top i{width:7px;height:7px;border-radius:50%;background:#d4cde2}.story-browser-top span{margin-left:14px}.story-web-heading{font-size:35px;font-weight:650;animation:story-rise .7s .2s both}.story-web-line{height:9px;width:80%;background:#e9e5ef;border-radius:5px;margin-top:16px;animation:bar-grow .7s .4s both;transform-origin:left}.story-web-line.short{width:55%;animation-delay:.6s}.story-web-button{display:inline-block;padding:13px 18px;border-radius:9px;background:#6b4bea;color:white;margin-top:22px;animation:story-rise .7s .9s both}.story-web-sections{display:flex;gap:16px;margin-top:26px}.story-web-sections>div{flex:1;background:#f0edf8;border-radius:10px;padding:18px;font-size:16px;animation:story-rise .7s .8s both}
.move-demo{text-align:center}.mini-board{display:grid;grid-template-columns:repeat(4,1fr);width:240px;margin:0 auto 20px;border:6px solid #d9cfec;border-radius:10px;overflow:hidden}.mini-square{aspect-ratio:1;background:#f4eddf;position:relative;display:grid;place-items:center}.mini-square:nth-child(8n+2),.mini-square:nth-child(8n+4),.mini-square:nth-child(8n+5),.mini-square:nth-child(8n+7){background:#b4a3cb}.mini-square small{position:absolute;bottom:2px;left:4px;color:#373044;font-size:12px}.story-pawn{z-index:2;font-size:47px;line-height:1;color:white;text-shadow:0 1px 2px #161320;transition:transform .7s ease}.moved .story-pawn{transform:translateY(-114px)}.target-ring{width:18px;height:18px;background:#5f4a9b66;border-radius:50%}.move-demo p{font-size:17px;margin:12px 0 0}
@keyframes scene-arrive{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@keyframes story-rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}@keyframes bar-grow{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@media(min-width:1100px){.practice-scene .lab-card{display:grid;grid-template-columns:1fr 1fr;align-items:start}.practice-scene .lab-card>.lab-bar{grid-column:1/-1}.practice-scene .lab-card>.prompt-window{grid-column:1;grid-row:2}.practice-scene .lab-card>.build-actions{grid-column:1;grid-row:3;display:block}.practice-scene .lab-card>.app-output{grid-column:2;grid-row:2/5;border-left:1px solid #e4e6ed;min-height:300px}.practice-scene .lab-card>.practice-task{grid-column:1;grid-row:4;margin:12px 22px 24px}.practice-scene .lab-card>.export-row{grid-column:1/-1}.practice-scene .lab-card>.app-output:empty{display:grid;place-items:center}.practice-scene .lab-card>.app-output:empty:before{content:'Your app will take shape here.';font-size:20px;color:#697084;padding:25px;text-align:center}}
@media(max-width:760px){.player-main{padding:12px 12px 24px!important}.player-main .lesson-header{padding:0 6px}.player-lesson-name{font-size:13px;max-width:170px}.immersive-player{border-radius:20px}.player-scene{padding:30px 22px;min-height:500px}.scene-copy h1{font-size:31px;margin:14px auto 20px}.scene-lead{font-size:19px;line-height:1.6;margin-bottom:22px}.scene-visual{margin:22px auto;min-height:120px}.story-items{flex-direction:column;gap:14px}.story-item{padding:19px;gap:8px}.story-item strong{font-size:22px}.story-item>span:last-child{font-size:18px}.visual-flow .story-item:not(:last-child):after{content:'↓';right:24px;top:auto;bottom:-20px}.visual-apps .story-item{display:grid;grid-template-columns:50px 1fr;text-align:left;gap:5px 14px}.visual-apps .story-item-number{grid-row:1/3;width:50px;height:50px;border-radius:14px}.visual-apps .story-item-number:before{font-size:30px}.visual-chat .story-item{width:95%;padding:18px}.visual-chat .story-item>span:last-child{font-size:19px}.scene-note{gap:10px;align-items:flex-start;margin-top:24px}.scene-note p{font-size:16px}.guide-mark{flex-basis:30px;height:30px;font-size:22px}.player-nav{grid-template-columns:auto 1fr auto;padding:14px 12px;gap:8px}.player-nav>button{min-width:0!important;font-size:15px!important;padding:12px 13px!important}.scene-position{font-size:13px;min-width:0}.scene-position>span:last-child{display:none}.scene-dots{gap:3px}.scene-dots i{width:4px;height:4px}.scene-dots i.active{width:12px}.player-tools{flex-direction:column;align-items:flex-start;gap:8px;font-size:14px}.question-scene h2{font-size:26px}.question-scene .choice{font-size:18px;padding:15px;gap:12px}.question-scene .quiz-actions{gap:12px;flex-wrap:wrap}.practice-scene{padding:26px 14px}.practice-scene .scene-copy h1{font-size:29px}.practice-scene .prompt-window{padding:18px}.practice-scene .build-actions{padding:16px 18px;display:block}.practice-scene .lab-bar{padding:14px;gap:12px;flex-wrap:wrap}.practice-scene .app-output{padding:12px}.practice-scene .concept-practice{padding:4px;font-size:18px}.practice-scene .concept-practice h3{font-size:24px}.practice-scene .practice-task{margin:12px;padding:16px}.practice-scene .site-form{padding:18px}.practice-scene .two-fields{grid-template-columns:1fr}.practice-scene .export-row{padding:16px;gap:12px;flex-wrap:wrap}.cinema-scene .scene-copy h1{font-size:29px}.cinema-scene .video-caption{flex-direction:column;align-items:flex-start;font-size:13px}.story-web-heading{font-size:28px}.story-web-sections{gap:10px}.story-web-sections>div{font-size:14px;padding:13px}.story-chart{padding:18px}.story-chart>div{grid-template-columns:66px 1fr 50px;font-size:17px;gap:10px}.finish-scene .complete-banner strong{font-size:29px}.finish-scene .celebration{padding:10px}.finish-scene .celebration h2{font-size:32px}.practice-scene .typed-prompt{min-height:0}}
@media(prefers-reduced-motion:reduce){.player-scene,.story-item,.story-chart i,.story-web-heading,.story-web-line,.story-web-button,.story-web-sections>div{animation:none!important}.story-pawn{transition:none}}
@media(min-width:1100px){.practice-scene .site-builder{display:grid;grid-template-columns:1fr 1fr;align-items:start;gap:0 20px}.practice-scene .site-builder>.lab-bar{grid-column:1/-1}.practice-scene .site-form{grid-column:1;grid-row:2/6;padding:22px}.practice-scene .site-build-animation,.practice-scene .site-preview{grid-column:2;grid-row:2;margin:22px 0 0;width:calc(100% - 22px);min-width:0}.practice-scene #skip-site-animation{grid-column:2;grid-row:3}.practice-scene #site-error{grid-column:2;grid-row:4}.practice-scene #site-publication{grid-column:1/-1}.practice-scene .site-link-box .micro{overflow-wrap:anywhere}}
@media(max-width:360px){.player-nav{padding:12px 8px;gap:6px}.player-nav>button{font-size:14px!important;padding:12px 9px!important}.scene-position{font-size:12px}.player-scene{padding-left:16px;padding-right:16px}.practice-scene{padding-left:10px;padding-right:10px}}

/* Narrated scenes: all motion follows measured audio cues, including pause and replay. */
.narration-bar{padding:18px 30px 0;background:#f3f4fc;border-bottom:1px solid #dde1ed}.narration-controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.narration-controls button{min-height:46px;font-size:16px;padding:10px 16px}.narration-controls #narration-play{background:#6b4bea;color:white;border-color:#6b4bea;min-width:150px}.narration-bar>span{display:block;color:#575f72;font-size:14px;line-height:1.5;margin:10px 0}.narration-progress{height:3px;background:#e1e4ef;margin:0 -30px}.narration-progress>span{display:block;height:100%;width:0;background:#7a5ada}.narration-caption{margin:0;padding:18px 30px;background:#242a40;color:#fff;text-align:center;font-size:20px;line-height:1.55;min-height:68px}.story-scene [data-cue]{transition:opacity .45s ease,transform .45s ease,box-shadow .45s ease}.story-scene .cue-waiting{opacity:0;visibility:hidden;pointer-events:none;transform:translateY(12px)}.story-scene .scene-lead .cue-waiting{transform:none}.story-scene.narration-running .story-item,.story-scene.narration-running .story-chart i,.story-scene.narration-running .story-web-heading,.story-scene.narration-running .story-web-line,.story-scene.narration-running .story-web-button,.story-scene.narration-running .story-web-sections>div{animation:none}.story-item.cue-speaking{box-shadow:0 0 0 3px #a492df,0 16px 35px #71638c15}.scene-lead .cue-speaking{color:#53389a}.scene-note.cue-speaking{border-color:#a492df}
@media(max-width:760px){.narration-bar{padding:14px 16px 0}.narration-controls{gap:6px}.narration-controls button{font-size:14px;padding:10px 12px}.narration-controls #narration-play{min-width:125px}.narration-progress{margin:0 -16px}.narration-caption{font-size:18px;padding:16px}.narration-bar>span{font-size:13px}}
@media(prefers-reduced-motion:reduce){.story-scene [data-cue]{transition:none!important;transform:none!important}}

.narration-bar{position:sticky;top:0;z-index:6;background:#f3f4fcf7;backdrop-filter:blur(12px)}.narration-caption{position:sticky;bottom:98px;z-index:4;max-height:30vh;overflow:auto}
@media(max-width:760px){.narration-caption{bottom:77px;font-size:17px}}

/* Focused practice surfaces: readable source, visible result, one next action. */
.workshop{max-width:960px;margin:auto;padding:clamp(18px,3vw,36px);border:1px solid var(--line,#dcdce5);border-radius:24px;background:#fff;color:#252537}.workshop h2{font-size:clamp(24px,3vw,34px);line-height:1.2;margin:24px 0 16px}.workshop p,.workshop label,.workshop td,.workshop th,.workshop blockquote{font-size:18px;line-height:1.6}.workshop form{display:grid;gap:18px;margin:24px 0}.workshop label{display:grid;gap:8px;font-weight:600}.workshop input,.workshop select{box-sizing:border-box;width:100%;min-height:52px;border:1px solid #b5b5c5;border-radius:10px;padding:12px;background:#fff;color:#252537;font:inherit}.workshop button{min-height:48px;white-space:normal}.workshop form>.primary{justify-self:start}.workshop .lab-bar{gap:12px;flex-wrap:wrap}.work-before,.work-result{padding:22px;border-radius:16px;background:#f2effb;margin:20px 0}.work-result{background:#ecf8f2;border:1px solid #afd9c5}.work-result button{margin:6px 8px 0 0}.work-compare{display:grid;grid-template-columns:1fr 1fr;gap:20px}.work-compare article{padding:20px;border:1px solid #dddce6;border-radius:16px;min-width:0}.work-compare pre{white-space:pre-wrap;font:18px/1.9 ui-monospace,monospace}.work-table{overflow-x:auto;margin:18px 0}.work-table table{width:100%;border-collapse:collapse;text-align:left}.work-table td,.work-table th{padding:12px;border-bottom:1px solid #dddce6}.work-table th{background:#f5f5fa}.work-bars{display:grid;gap:14px;margin:24px 0}.work-bars>div{display:grid;grid-template-columns:90px minmax(20px,1fr) 80px;gap:12px;align-items:center;font-size:18px}.work-bars i{height:26px;width:var(--bar);background:#7661d9;border-radius:5px;transition:width .5s}.work-bars strong{text-align:right}.work-fields{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.work-warning{color:#82430e;background:#fff3df;padding:12px;border-radius:10px}.workshop .work-check{display:flex;align-items:flex-start;gap:12px;font-weight:400}.work-check input{width:24px;min-height:24px;height:24px;flex-shrink:0;margin-top:3px;accent-color:#6650c8}.work-feedback:empty{display:none}.work-feedback{padding:16px;background:#f6f3ff;border-radius:12px}.work-pipeline{display:grid;gap:12px}.work-pipeline span{border:1px solid #dedce8;padding:16px;border-radius:12px;font-size:18px}.workshop blockquote{margin:24px 0;border-left:4px solid #7661d9;padding:14px 22px;background:#f6f4fc}.work-run li{padding:8px;animation:work-reveal .6s both}.work-run li:nth-child(2){animation-delay:.3s}.work-run li:nth-child(3){animation-delay:.6s}.work-run li:nth-child(4){animation-delay:.9s}.course-update{padding:12px 18px;border-radius:12px;background:#eeeafa}.workshop .micro{font-size:15px}.workshop :focus-visible{outline:3px solid #6150c5;outline-offset:3px}@keyframes work-reveal{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@media(max-width:650px){.work-compare,.work-fields{grid-template-columns:1fr}.workshop{padding:18px}.workshop .button-row{align-items:stretch}.workshop .button-row button{flex:1 1 100%}.work-bars>div{grid-template-columns:70px minmax(20px,1fr) 70px;gap:8px}.workshop .practice-label{font-size:10px}}@media(prefers-reduced-motion:reduce){.work-run li{animation:none}.work-bars i{transition:none}}

/* The live workshop shares the lesson canvas and its pacing controls. */
.ai-scene{padding:clamp(18px,3vw,38px)}
.ai-intro{max-width:780px;margin:0 0 26px}.ai-intro h1{font-size:clamp(30px,4vw,48px);line-height:1.1;margin:12px 0 18px}.ai-intro p{font-size:20px;line-height:1.6}.ai-intro .micro{font-size:15px;color:#5e6376}
.ai-live-dot{display:inline-block;width:9px;height:9px;background:#1b8060;border-radius:50%;margin-right:8px}
.ai-columns{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:start}.has-preview .ai-columns{grid-template-columns:minmax(290px,.9fr) minmax(0,1.3fr)}
.ai-conversation,.ai-result{min-width:0;border:1px solid #dfe2eb;border-radius:20px;background:#fff;overflow:hidden}
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