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/* Authored chapter: story-led teaching pages and lexical detail */
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18px}.audiofooter{padding:20px 0;font-size:13px;color:#718163}.audio-preferences{padding:15px 0}.audio-preferences label{display:block;font-size:13px;margin-bottom:8px}.audio-preferences summary{font-size:14px}.audio-preferences select{max-width:550px;font-size:14px}.lexarticle,.lexgender,.lexplural,.lexforms{color:#70756f;font-weight:400}.lexgender{font-size:.65em;border:1px solid #d5d8d1;border-radius:3px;padding:1px 5px;vertical-align:middle;margin-left:4px;white-space:nowrap}.lexpos{font-size:12px;color:#70766c}.lexplural,.lexforms{display:block;font-size:13px;line-height:1.65}.lexsample{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:22px 0}.lexsample>div{display:flex;flex-direction:column;gap:5px;border:1px solid var(--border);border-radius:8px;padding:16px}.lexsample>div>b{font-size:19px}.lexsample>div>span:last-child{color:#5f7550;font-size:14px;margin-top:4px}.wordgroup{font-size:15px;background:#edf2e5;border-radius:6px;padding:11px 14px;margin:22px 0 0}.nounlegend{display:flex;gap:10px 20px;flex-wrap:wrap;padding:18px 0 0;font-size:12px;color:#6d7567}.wordexample{margin:4px 0;font-size:13px}.wordexample p{margin:7px 0 0;font-size:14px}.wordfilters.expanded{grid-template-columns:1.2fr 1fr .75fr .8fr}.wordrow .lexplural,.wordrow .lexforms{color:#70756f!important;font-size:12px!important}.flashgrammar{margin:0 0 14px}.flashgrammar .lexplural,.flashgrammar .lexforms{font-size:16px}.flashexample{padding:12px 18px;background:#f1f5e9;border-radius:6px}.flashword .lexarticle{font-weight:400}.flashword .lexgender{font-size:15px}.wordrow .lexgender{font-size:11px}.teachingpage table{font-size:15px}.teachingpage table td:first-child{font-weight:600}
@media(max-width:1150px){.storyhero{grid-template-columns:270px 1fr;gap:25px}.storyhome{grid-template-columns:1fr 1.1fr;gap:22px;padding:23px}.storyhome h1{font-size:28px}.wordfilters.expanded{grid-template-columns:1fr 1fr}.wordfilters.expanded label:first-child{grid-column:auto}.storyintro{grid-template-columns:200px 1fr}}
@media(max-width:900px){.storyhero{grid-template-columns:1fr}.storyhero>.chaptercover{max-width:400px}.storyhome{grid-template-columns:1fr}.storyhome>div{max-width:400px}.storyintro{grid-template-columns:1fr}.storyintro>.chaptercover{max-width:350px}.materialpair{gap:20px}.teachingpage{padding:26px}.outcomes ul{grid-template-columns:1fr}.chapterreading .row{flex-wrap:wrap}.wordfilters.expanded{grid-template-columns:1fr 1fr}}
@media(max-width:650px){.storyhero{gap:22px}.storyhero h1{font-size:30px}.storyhero h2{font-size:20px}.storyhero .tag{font-size:11px}.storyhero>.chaptercover{max-width:none}.coveredbody{padding:20px}.coveredbody h2{font-size:22px}.storyhome{padding:0;gap:0}.storyhome>div{max-width:none}.storyhome .chaptercover{border-radius:0}.storyhome>section{padding:23px}.outcomes{padding:22px}.outcomes ul{font-size:14px}.teachingpage{padding:23px 18px}.materialpair,.profilepair,.patternpair{grid-template-columns:1fr}.coursenotice{transform:none}.scriptline{grid-template-columns:49px 1fr 35px;gap:9px}.scriptline p{font-size:15px}.scriptline>span{font-size:12px}.dialogueplayer{padding:16px}.dialogueplayer>.row{gap:12px}.storynav{gap:6px}.storynav a{width:calc((100% - 42px)/8);padding:7px 0}.chapterquestion legend{font-size:15px}.sectiontitle{align-items:flex-start}.sectiontitle .tag{font-size:11px;max-width:70%}.sectiontitle>span:last-child{font-size:11px}.alphabetgrid{grid-template-columns:repeat(6,1fr);gap:6px}.numbergrid{grid-template-columns:repeat(3,1fr);gap:7px}.numbergrid button{padding:10px 8px;flex-direction:column;gap:2px}.numbergrid span{font-size:12px}.registrationform{padding:17px;grid-template-columns:1fr}.profileletter{padding:21px}.profileletter p{font-size:18px}.roleplay{padding:18px}.roleline .row{flex-wrap:nowrap}.roleline b{font-size:15px}.lexsample{grid-template-columns:1fr}.sectionfinish>.row{align-items:stretch;flex-direction:column}.sectionfinish .btn{width:100%}.wordfilters.expanded{grid-template-columns:1fr 1fr}.wordfilters.expanded label:first-child{grid-column:1/-1}.nounlegend{font-size:11px}.wordrow>div:first-child{max-width:100%}.wordrow .lexplural{white-space:normal}.flashgrammar .lexforms{font-size:13px}.audio-preferences select{font-size:13px}.wordrow .lexgender{font-size:10px}.storynav+.sectiontitle{margin-top:10px}}

/* Revision 4: quiet Bangla-first learner journey */
body{font-family:'Noto Sans Bengali','DM Sans',sans-serif}.english-sub{display:block;color:#8a948c;font:400 12px/1.45 'DM Sans',sans-serif;margin-top:2px;letter-spacing:0}.nav-sub{display:block;color:#89948b;font:400 10px/1.2 'DM Sans',sans-serif;margin-top:1px}.sidefoot small{display:block;color:#9aa39b;margin-top:2px}footer span{color:#a0a9a1;margin-left:6px}.simple-page-head{margin-bottom:24px}.simple-page-head h1{margin:0}.simple-page-head>.english-sub{font-size:14px}.quiet-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#dfe5dc;border:1px solid #dfe5dc;border-radius:12px;overflow:hidden;margin-bottom:24px}.quiet-metrics>div{background:white;padding:18px 22px}.quiet-metrics b{display:block;font:700 25px/1.2 Manrope}.quiet-metrics span{font-size:13px;color:#60705f}.current-learning{padding:0;display:grid;grid-template-columns:340px 1fr;overflow:hidden;align-items:stretch}.current-learning>.chaptercover{border-radius:0;min-height:100%;aspect-ratio:auto}.current-learning>div:last-child{padding:32px}.current-learning h2{font-size:29px;margin:8px 0 0}.current-learning h3{font-size:19px;margin:0 0 2px}.current-learning p{font-size:15px}.chapter-kicker{font-size:12px;color:#62715f}.home-shortcuts,.chapter-tools{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:20px}.home-shortcuts{grid-template-columns:repeat(2,1fr)}.home-shortcuts a,.chapter-tools a{background:white;border:1px solid var(--border);border-radius:10px;padding:17px 20px}.home-shortcuts b,.chapter-tools b{display:block;font-size:15px}.image-placeholder{background:#eef1ed;border:1px dashed #aeb8af;border-radius:12px;color:#657267;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:26px;min-height:190px}.image-placeholder>span{font-size:11px;color:#88938a;margin-bottom:12px}.image-placeholder>b{font-size:16px;max-width:280px}.image-placeholder>small{font:400 12px/1.4 'DM Sans',sans-serif;color:#929b94;margin-top:3px}.chaptercover{background-image:none!important;aspect-ratio:4/3}.chapter-hero-minimal{display:grid;grid-template-columns:330px minmax(0,1fr);gap:32px;background:white;border:1px solid var(--border);border-radius:15px;overflow:hidden;margin-bottom:22px}.chapter-hero-minimal>.chaptercover{border-radius:0;min-height:100%}.chapter-hero-minimal>div:last-child{padding:30px 32px 30px 0}.chapter-hero-minimal h1{margin:7px 0 0}.chapter-hero-minimal h2{font-size:20px;margin:0}.chapter-hero-minimal p{font-size:15px;margin-top:17px}.session-list{display:grid;gap:8px}.session-row{display:grid;grid-template-columns:44px 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22px}.progress-list a{display:grid;grid-template-columns:34px 1fr auto;gap:13px;align-items:center;padding:16px 0;border-bottom:1px solid var(--border)}.progress-list a:last-child{border:0}.progress-list>a>span{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#edf2e8}.progress-list b{font-size:14px}.progress-list small{color:#7d897f}.wordrow .english-sub{font-size:11px}.vocabstat .english-sub{font-size:10px}.coveredchapter>.image-placeholder{border-radius:0;border-width:0 0 1px}.coveredbody .english-sub{font-size:12px}.profilepair small{color:#748071}.selfcheck .english-sub{margin-top:3px}.feedback .english-sub{color:#82907e}.chapterquestion legend .english-sub{font-size:12px;font-weight:400}.dialogueplayer .english-sub{font-size:11px}.registrationform .english-sub{margin-bottom:7px}.lexsample .english-sub{font-size:11px!important;color:#8b948d!important}.sidefoot{padding-top:20px}.sidefoot .levelchip{padding-top:18px}
.inline-en{color:#8a948c;font-size:.78em;font-weight:400;margin-left:.3rem}.writing-fixes{border-top:1px solid var(--border);margin-top:12px;padding-top:8px}.writing-fixes p{margin:7px 0}
@media(max-width:1000px){.current-learning{grid-template-columns:270px 1fr}.chapter-hero-minimal{grid-template-columns:270px 1fr}.session-row{grid-template-columns:40px 1fr 140px}.session-row i{display:none}}
@media(max-width:760px){.current-learning,.chapter-hero-minimal{grid-template-columns:1fr}.current-learning>.chaptercover,.chapter-hero-minimal>.chaptercover{min-height:180px}.current-learning>div:last-child,.chapter-hero-minimal>div:last-child{padding:24px}.session-row{grid-template-columns:38px 1fr}.session-row>small{grid-column:2}.quiet-metrics>div{padding:14px 12px}.quiet-metrics b{font-size:21px}.quiet-metrics span{font-size:11px}.home-shortcuts,.chapter-tools{grid-template-columns:1fr}.teachingpage>.lesson-scene{margin:-23px -18px 24px}.session-heading h1{font-size:25px}.session-heading>small{font-size:11px}.micro-table{grid-template-columns:1fr}.inline-link span{float:none;display:block;margin-top:2px}.chapter-final-actions{display:grid}.chapter-final-actions .btn{width:100%}}
@media(max-width:650px){aside{padding-bottom:10px}nav{margin-top:12px}.nav-sub{font-size:9px}.shell>header{display:none}main{padding-top:20px}.shell{margin-left:0}.quiet-metrics{margin-bottom:16px}.current-learning h2{font-size:25px}.teachingpage{padding:23px 18px}.session-heading{margin-top:4px}.storynav{overflow:auto}.storynav a{min-width:34px}.wordfilters.expanded{grid-template-columns:1fr}.wordfilters.expanded label:first-child{grid-column:auto}.vocabsummary{grid-template-columns:1fr 1fr}.profilepair{grid-template-columns:1fr}.chapterquestion .options{gap:7px}.chapterquestion .option{padding:12px}.simple-page-head{margin-bottom:18px}footer{font-size:10px}.brand{font-size:24px}}
.chaptercover{background-image:url('assets/chapter-covers.png')!important;background-repeat:no-repeat;background-size:400% 300%;aspect-ratio:4/3}

/* Revision 6: fixed-shell Chapter 1 journey */
.chapter-shelves{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:18px 0 28px}.chapter-shelves a{background:#fff;border:1px solid var(--border);border-radius:11px;padding:16px 18px}.chapter-shelves b{display:block}.journey-path{max-width:760px;margin:0 auto;display:grid}.journey-node{position:relative;display:grid;grid-template-columns:64px 1fr auto;gap:16px;align-items:center;min-height:94px;padding:10px 16px;border-radius:14px}.journey-node:hover{background:#f0f4ed}.journey-node.locked{opacity:.48;pointer-events:none}.node-line{position:absolute;left:47px;top:-18px;width:3px;height:36px;background:#d9e1d6}.journey-node:first-child .node-line{display:none}.node-orb{position:relative;z-index:1;width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:#fff;border:3px solid #bcc8b9;font:700 18px/1 Manrope}.journey-node.current .node-orb{background:var(--lime);border-color:#809a43;box-shadow:0 0 0 6px #d8ef9a42}.journey-node.done .node-orb{background:var(--ink);border-color:var(--ink);color:#fff}.node-copy small,.node-copy b{display:block}.node-copy small{font-size:12px;color:#758176}.node-copy b{font-size:16px}.node-state{font-size:12px;color:#617a55}.journey-shell{position:fixed;inset:0;z-index:999;background:#f7f8f5;display:grid;grid-template-rows:auto minmax(0,1fr) auto;height:100dvh;color:var(--ink)}.journey-top{min-height:66px;background:#fff;border-bottom:1px solid #e2e7e0;display:grid;grid-template-columns:44px minmax(0,680px) 44px;justify-content:center;align-items:center;gap:15px;padding:10px 18px}.journey-top>a,.journey-top>button{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:transparent;color:#627068;font-size:25px}.journey-top>button{font-size:20px}.journey-top>a:hover,.journey-top>button:hover{background:#eef2ec}.journey-top>div>span{display:block;text-align:center;color:#68756e;font-size:12px;margin-bottom:5px}.journey-progress{height:10px;background:#e6ebe4;border-radius:20px;overflow:hidden}.journey-progress i{display:block;height:100%;background:#80a443;border-radius:20px;transition:width .25s ease}.journey-stage{min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:28px 18px 38px!important}.journey-card{width:min(680px,100%);min-height:min(520px,100%);margin:0 auto;display:flex;flex-direction:column;justify-content:center}.module-count{align-self:flex-end;color:#89938c;font-size:12px;margin-bottom:8px}.module-title{margin:0 0 22px}.module-title h1{font-size:clamp(24px,4vw,34px);line-height:1.3;margin:0}.module-title>.english-sub{font-size:14px}.journey-placeholder{min-height:240px;border:2px dashed #b9c4b8;background:#edf1ec;border-radius:17px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:30px;margin:0 0 22px}.journey-placeholder span{color:#88938a;font:600 11px/1.3 'DM Sans';letter-spacing:.08em}.journey-placeholder b{max-width:440px;font-size:17px;margin-top:10px}.artifact-transcript{white-space:pre-wrap;background:#fff;border:1px solid #dce3da;border-radius:12px;padding:22px;font:600 17px/1.9 'DM Sans';box-shadow:0 8px 28px #20372e0d}.journey-dialogue{display:grid;gap:12px}.journey-line{display:grid;grid-template-columns:60px 1fr 38px;gap:12px;align-items:start;background:#fff;border:1px solid #e0e5df;border-radius:12px;padding:15px}.journey-line>span{font-size:12px;font-weight:700;color:#64804f}.journey-line p{font-size:17px;margin:0}.journey-audio{justify-self:start;border:1px solid #d4ddd0;background:#fff;color:#365b36;border-radius:9px;padding:9px 13px;margin-top:12px}.journey-line .journey-audio{margin:0;padding:5px 9px}.journey-options{display:grid;gap:11px}.journey-option{display:grid;grid-template-columns:38px 1fr;gap:13px;align-items:center;text-align:left;background:#fff;border:2px solid #dce3da;border-radius:13px;padding:15px 17px;color:var(--ink);font-size:17px}.journey-option>span{width:32px;height:32px;border:1px solid #c9d2c6;border-radius:8px;display:grid;place-items:center;font-size:13px}.journey-option.selected{border-color:#75984a;background:#f1f8e7}.order-answer{min-height:76px;background:#fff;border:2px solid #dce3da;border-radius:13px;padding:14px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}.order-answer>span{color:#8a948c}.order-answer button,.word-bank button{background:#fff;border:1px solid #bfcbb9;border-bottom-width:3px;border-radius:9px;padding:10px 13px;color:var(--ink)}.word-bank{display:flex;gap:9px;flex-wrap:wrap;margin-top:20px}.journey-field{display:grid;gap:16px}.journey-field>span{font-size:23px;background:#fff;padding:20px;border-radius:12px;border:1px solid #e0e5df}.journey-field input,.journey-form input,.writing-prompt textarea{background:#fff;border:2px solid #cad4c6;border-radius:12px;padding:14px 16px;font-size:18px;color:var(--ink)}.match-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.match-grid>div{display:grid;gap:9px}.match-grid button{min-height:52px;background:#fff;border:2px solid #dce3da;border-radius:10px;padding:10px;color:var(--ink)}.match-grid button.selected{border-color:#75984a;background:#f1f8e7}.match-grid button:disabled{opacity:.36;text-decoration:line-through}.sort-list{display:grid;gap:10px}.sort-list>div{background:#fff;border:1px solid #dde4da;border-radius:11px;padding:13px 15px;display:grid;grid-template-columns:minmax(110px,1fr) auto;align-items:center;gap:12px}.sort-list>div>span{display:flex;gap:6px;flex-wrap:wrap}.sort-list button{background:#f3f5f1;border:1px solid #d6ddd3;border-radius:8px;padding:7px 10px;color:var(--ink)}.sort-list button.selected{background:#dff0c7;border-color:#77974b}.speak-card{background:#fff;border:1px solid #dce3da;border-radius:15px;padding:25px}.speak-card>p{font-size:24px;line-height:1.6;margin:0 0 10px}.speak-card>label{display:flex;align-items:flex-start;gap:10px;margin-top:24px;padding-top:18px;border-top:1px solid #e2e7e0}.speak-card input{width:21px;height:21px;accent-color:#719348}.journey-form{display:grid;grid-template-columns:1fr 1fr;gap:15px;background:#fff;border:1px solid #dde4db;border-radius:14px;padding:20px}.journey-form label{font-weight:600}.journey-form input{width:100%;margin-top:7px}.writing-prompt{display:grid;gap:13px}.writing-prompt pre{white-space:pre-wrap;background:#eef3e9;border-radius:12px;padding:18px;font:500 16px/1.8 'DM Sans'}.writing-prompt textarea{min-height:190px;resize:vertical}.writing-prompt small{color:#78837b;text-align:right}.lesson-recap{text-align:center;max-width:570px;margin:auto}.recap-check{width:76px;height:76px;border-radius:50%;display:grid;place-items:center;background:var(--lime);color:#34522f;font-size:35px;margin:0 auto 18px}.lesson-recap h1{margin:0}.recap-block,.recap-unlock{background:#fff;border:1px solid #dfe5dc;border-radius:12px;padding:17px 20px;margin-top:13px;text-align:left}.recap-block small,.recap-unlock span{display:block;color:#78847b;font-size:12px}.recap-block p{margin:5px 0 0}.recap-unlock{background:#eef5e5;border-color:#d3e3c4}.journey-bottom{min-height:96px;background:#fff;border-top:1px solid #dfe5dc;display:grid;grid-template-columns:minmax(0,480px) 190px;justify-content:center;align-items:center;gap:18px;padding:14px 20px calc(14px + env(safe-area-inset-bottom))}.journey-bottom.correct{background:#eef8e5;border-color:#bcd49e}.journey-bottom.wrong{background:#fff4eb;border-color:#e9c5a6}.journey-feedback{min-height:24px;font-size:14px}.journey-primary{background:var(--ink);color:#fff;border-radius:11px;min-height:52px;padding:12px 18px;font-weight:700;box-shadow:0 3px 0 #0d2a26}.journey-primary:active{transform:translateY(2px);box-shadow:0 1px 0 #0d2a26}
@media(max-width:720px){.chapter-shelves{grid-template-columns:1fr}.journey-node{grid-template-columns:54px 1fr;padding:8px 2px}.node-orb{width:50px;height:50px}.node-line{left:25px}.node-state{display:none}.journey-top{grid-template-columns:40px minmax(0,1fr) 40px;padding:8px 10px}.journey-stage{padding:18px 16px 24px!important}.journey-card{min-height:100%;justify-content:flex-start}.module-title h1{font-size:25px}.journey-placeholder{min-height:190px;padding:22px}.journey-bottom{grid-template-columns:1fr;gap:8px;padding:10px 16px calc(10px + env(safe-area-inset-bottom))}.journey-feedback:empty{display:none}.journey-primary{width:100%}.match-grid{gap:8px}.journey-form{grid-template-columns:1fr}.sort-list>div{grid-template-columns:1fr}.journey-line{grid-template-columns:48px 1fr 34px;padding:12px}.journey-line p{font-size:16px}}

/* Revision 7: Chapter 1 story, stable controls and repaired mobile journey */
body.journey-open{overflow:hidden}.module-title{display:block}.module-title h1{max-width:620px}.target-line{font-size:24px;line-height:1.55;color:var(--ink);background:#fff;border:1px solid #dce3da;border-radius:12px;padding:18px 20px}.journey-option b{font:600 17px/1.5 'DM Sans','Noto Sans Bengali',sans-serif}.journey-actions{display:flex;justify-content:flex-end;align-items:center;gap:10px}.journey-secondary{min-height:52px;padding:12px 16px;border:1px solid #cbd5c8;border-radius:11px;background:#fff;color:var(--ink);font-weight:700}.journey-primary{min-width:190px}.speak-card>small{display:block;color:#7c887f;margin-top:12px}.audio-preferences{background:#fff;border:1px solid var(--border);border-radius:11px;padding:0 18px;margin:0 0 26px}.audio-preferences summary{padding:15px 0;font-weight:700;color:var(--ink)}.audio-preferences label{display:grid;gap:7px;font-weight:600}.audio-preferences .audio-actions{margin:12px 0}.flash-session{max-width:680px}.flash-session .flashface{height:370px;min-height:370px;overflow-y:auto;margin-bottom:16px}.flash-controls{min-height:64px;display:grid;align-items:stretch}.flash-controls>.center,.flash-controls>.ratingbuttons{height:100%}.flash-controls>.center{display:grid;place-items:center}.flash-controls .btn{min-height:54px}.journey-card:focus{outline:none}

/* Compact open-license illustrations and stepped conversation mechanic. */
.journey-illustration{margin:0 0 22px;background:linear-gradient(150deg,#f0f5e9,#fff8e9);border:1px solid #dce5d7;border-radius:18px;overflow:hidden}.illustration-stage{height:170px;display:flex;align-items:center;justify-content:center;gap:20px;padding:20px;background:radial-gradient(circle at 50% 115%,#dcebc8 0 38%,transparent 39%)}.openmoji{display:block;width:88px;height:88px;object-fit:contain;filter:drop-shadow(0 8px 8px #20372e20)}.illustration-stage .item-1{transform:rotate(-4deg) translateY(4px)}.illustration-stage .item-2{transform:scale(1.08)}.illustration-stage .item-3{transform:rotate(4deg) translateY(4px)}.journey-illustration figcaption{padding:10px 15px 12px;color:#68756e;font-size:12px;text-align:center}.artifact-paper .journey-illustration{border-radius:12px 12px 0 0;margin:0}.artifact-paper .illustration-stage{height:125px}.artifact-paper .artifact-transcript{margin:0;border-radius:0 0 12px 12px;border-top:0}.speaker-portrait{display:flex!important;align-items:center;gap:7px;min-width:0}.speaker-avatar{width:34px;height:34px;filter:none;flex:0 0 auto}.staged-dialogue{margin-bottom:14px}.staged-dialogue .journey-line{animation:conversation-in .2s ease both}.journey-line.learner-line{margin-left:48px;background:#eff8e7;border-color:#cfe1b8}.journey-line.current-line{border-color:#8aa85a;box-shadow:0 0 0 3px #dcedc85c}.conversation-turn{display:grid;gap:13px}.conversation-question{background:#eee8ff;border:1px solid #d3c4f6;border-radius:13px;padding:15px 17px;font-weight:700;color:#3e2c68}.conversation-question .english-sub{display:block;margin-top:3px}.conversation-next,.conversation-choices button{background:#fff;border:2px solid #cad5c6;border-bottom-width:5px;border-radius:13px;color:var(--ink);font-weight:700;min-height:54px;padding:12px 17px;transition:transform .1s ease,border-color .1s ease,background .1s ease}.conversation-next{justify-self:end;background:#edf6df;border-color:#91aa69}.conversation-choices{display:grid;gap:10px}.conversation-choices button{text-align:left;font:700 17px/1.45 'DM Sans',sans-serif}.conversation-next:active,.conversation-choices button:active,.journey-option:active,.match-grid button:active,.sort-list button:active,.word-bank button:active{transform:translateY(3px);border-bottom-width:2px}.conversation-choices button:hover{border-color:#7651b5;background:#f5f1ff}.conversation-feedback{margin:0;color:#9b4f21;font-weight:700}.conversation-complete{display:grid;justify-items:center;gap:4px;background:#eef8e5;border:1px solid #bfd79e;border-radius:13px;padding:18px;text-align:center}.conversation-complete b{font-size:18px}.conversation-complete .journey-audio{margin-top:8px}.journey-option,.match-grid button,.sort-list button{border-bottom-width:4px;box-shadow:0 2px 0 #20372e0a}.journey-option:hover,.match-grid button:hover,.sort-list button:hover{border-color:#8da56d}.journey-primary:disabled{opacity:.45;cursor:not-allowed;box-shadow:none;transform:none}.word-home{display:inline-grid;min-width:58px;min-height:43px}.word-home.empty{border:2px dashed #c5cec1;border-radius:9px;background:#eef1ec}.word-home.empty button{visibility:hidden}.word-home>button{width:100%}
@keyframes conversation-in{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}
@media(max-width:620px){.illustration-stage{height:145px;gap:10px}.openmoji{width:70px;height:70px}.journey-line{grid-template-columns:minmax(88px,auto) 1fr 34px}.journey-line.learner-line{margin-left:22px}.conversation-next{width:100%}.journey-bottom{grid-template-columns:1fr}.journey-actions{width:100%}.journey-primary{flex:1}.journey-secondary{flex:0 0 auto}}
@media(max-width:720px){.module-title{display:block!important}.journey-actions{width:100%}.journey-actions>*{flex:1}.journey-primary{min-width:0}.flash-session .flashface{height:330px;min-height:330px}.audio-preferences .audio-actions{display:grid}.target-line{font-size:20px}.journey-bottom:has(.journey-feedback:empty){gap:0}}

/* Revision 8: completed Lesson 1 scenes, artifacts and teacher explanations */
.journey-scene{margin:0 0 22px;border:1px solid #d9e1d7;border-radius:18px;overflow:hidden;background:#e9eee8;box-shadow:0 12px 34px #1b352812}.journey-scene img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover}.course-notice{width:min(520px,100%);margin:4px auto 0;background:#fffdf5;border:1px solid #d8d4c4;border-radius:4px;padding:32px 34px;color:#1e2925;box-shadow:0 16px 38px #25352a18;font-family:'DM Sans',sans-serif}.course-notice header{height:auto;padding:0 0 18px;display:grid;gap:6px;border:0;border-bottom:2px solid #254e40;background:transparent;color:inherit}.course-notice header small{font-size:10px;letter-spacing:.18em;color:#788178}.course-notice header strong{font:700 18px/1.25 Manrope,sans-serif;letter-spacing:.02em}.notice-course{font:800 clamp(27px,6vw,40px)/1.2 Manrope,sans-serif;color:#214d40;padding:30px 0 25px}.course-notice dl{display:grid;grid-template-columns:1.4fr .6fr;gap:12px;margin:0}.course-notice dl>div{border-top:1px solid #d8d7ce;padding-top:14px}.course-notice dt{font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:#7a817b}.course-notice dd{margin:5px 0 0;font:700 20px/1.3 Manrope,sans-serif}.course-notice footer{margin-top:30px;padding:14px 0 0;border-top:1px solid #d8d7ce;color:#4f5b55;font-size:14px}.teacher-pause{background:#fff;border:1px solid #dce5d7;border-left:5px solid #799a4e;border-radius:15px;padding:26px 28px;box-shadow:0 10px 30px #20372e0b}.teacher-pause-head{display:grid;grid-template-columns:1fr auto;align-items:start;margin-bottom:18px}.teacher-pause-head>span{font-weight:800;color:#294e3d}.teacher-pause-head>.english-sub{grid-column:1;font-size:11px}.teacher-pause-head>i{grid-column:2;grid-row:1/3;align-self:center;font:600 10px/1.2 'DM Sans';font-style:normal;letter-spacing:.06em;text-transform:uppercase;color:#5f7454;background:#edf4e6;border-radius:99px;padding:7px 10px}.teacher-pause>p{font-size:16px;line-height:1.8;color:#53645b;margin-bottom:20px}.teacher-pause>p>.english-sub{font-size:12px;line-height:1.55;margin-top:6px}.teach-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.teach-item{position:relative;min-height:76px;background:#f6f8f3;border:1px solid #e2e8df;border-radius:10px;padding:13px 14px;display:grid;align-content:center}.teach-item>b{font:700 17px/1.35 'DM Sans',sans-serif;color:#1f4539}.teach-item>span{font-size:13px;color:#59695f}.teach-item .english-sub{font-size:10px}.teach-item>.journey-audio{position:absolute;right:9px;top:9px;margin:0;padding:5px 8px}.teach-item:has(.journey-audio){padding-right:48px}.teacher-pause.numbers .teach-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.teacher-pause.numbers>.journey-audio{margin:0 0 16px}.teacher-pause.numbers .teach-item{min-height:70px}.teacher-note{margin-top:18px;padding:15px 17px;background:#eef4e8;border-radius:10px}.teacher-note>b{font-size:12px;color:#385a36}.teacher-note>.english-sub{font-size:10px}.teacher-note>p{margin:7px 0 0;color:#526358;font-size:14px}.teacher-note>p>.english-sub{font-size:11px;line-height:1.5;margin-top:4px}
@media(max-width:720px){.journey-scene{border-radius:13px}.course-notice{padding:24px 22px}.notice-course{padding:24px 0 20px}.course-notice dl{grid-template-columns:1fr 100px}.course-notice dd{font-size:17px}.teacher-pause{padding:21px 18px}.teacher-pause-head{grid-template-columns:1fr}.teacher-pause-head>i{grid-column:1;grid-row:auto;justify-self:start;margin-top:9px}.teach-grid{grid-template-columns:1fr}.teacher-pause.numbers .teach-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.teacher-pause.numbers .teach-item:last-child{grid-column:1/-1}.journey-scene img{min-height:190px}.module-title{margin-bottom:17px}}

/* Revision 9: restrained, optional learning feedback sounds */
.ui-sound-setting{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:15px 0}.ui-sound-setting label{display:flex;align-items:flex-start;gap:11px;font-weight:700}.ui-sound-setting input{width:21px;height:21px;margin-top:2px;accent-color:#719348;flex:0 0 auto}.ui-sound-setting .english-sub{font-size:11px;font-weight:400}.audio-preferences>.divider{margin:4px 0 18px}
@media(max-width:720px){.ui-sound-setting{align-items:stretch;flex-direction:column}.ui-sound-setting .btn{width:100%}}

/* Revision 11: distinct teaching space, terminology and stable drag sentence builder */
.teacher-pause{background:linear-gradient(145deg,#4c1d95,#5b21b6 58%,#6d28d9);border:1px solid #7c3aed;border-left:0;color:#fff;padding:28px;box-shadow:0 18px 42px #4c1d9530}.teacher-pause-head>span{color:#fff;font-size:18px}.teacher-pause-head>.english-sub{color:#d9c8ff}.teacher-pause-head>i{color:#f2eaff;background:#ffffff20;border:1px solid #ffffff2b}.teacher-pause>p{color:#f1eaff;font-size:17px}.teacher-pause>p>.english-sub{color:#d6c7f5}.teach-terms{display:flex;gap:8px;flex-wrap:wrap;margin:-2px 0 19px}.teach-terms>span{display:inline-flex;align-items:center;gap:8px;background:#251047;border:1px solid #a78bfa;border-radius:9px;padding:8px 11px;color:#fff}.teach-terms b{font:800 15px/1.2 'DM Sans',sans-serif;color:#fef08a}.teach-terms strong{font:700 14px/1.3 'Noto Sans Bengali','DM Sans',sans-serif;color:#fff}.teach-item{background:#fff;border-color:#e9ddff;box-shadow:0 5px 16px #220b4618}.teach-item>b{color:#4c1d95;font-weight:800}.teach-item>span{display:grid;gap:1px;color:#433855}.teach-item>span>strong{font:700 14px/1.45 'Noto Sans Bengali','DM Sans',sans-serif;color:#27153e}.teach-item .english-sub{color:#756887}.teacher-pause .journey-audio{border-color:#c4b5fd;color:#4c1d95}.teacher-note{position:relative;margin-top:20px;padding:18px 19px 18px 22px;background:#fef3c7;border:2px solid #facc15;border-left-width:7px;box-shadow:0 8px 20px #29115124}.teacher-note>b{font-size:14px;color:#5f3700}.teacher-note>.english-sub{color:#8a641c}.teacher-note>p{margin-top:8px;color:#3c2b0c;font-size:15px;font-weight:650}.teacher-note>p>.english-sub{color:#79683f;font-weight:400}.order-help{color:#6e7972;font-size:13px;margin:-8px 0 12px}.order-help .english-sub{font-size:11px}.order-answer{transition:border-color .16s,background .16s;min-height:82px}.order-answer button,.word-home button{touch-action:manipulation;user-select:none;-webkit-user-select:none}.word-bank{display:flex;gap:9px;flex-wrap:wrap;align-items:stretch}.word-home{display:inline-flex;min-height:45px}.word-home button{width:100%;background:#fff;border:1px solid #bfcbb9;border-bottom-width:3px;border-radius:9px;padding:10px 13px;color:var(--ink)}.word-home.empty{border:2px dashed #c8d0c5;border-radius:9px;background:#eef1ed}.word-home.empty>span{visibility:hidden;padding:8px 12px;white-space:nowrap}.order-answer.order-drop-active{border-color:#7c3aed;background:#f3e8ff}.word-bank.order-drop-active{outline:2px dashed #8b5cf6;outline-offset:7px;border-radius:8px}.order-dragging{opacity:.35}.order-drag-ghost{position:fixed!important;left:0;top:0;z-index:2000;pointer-events:none!important;margin:0!important;width:max-content!important;background:#fff!important;border:2px solid #7c3aed!important;border-radius:9px!important;padding:10px 13px!important;color:#27153e!important;box-shadow:0 12px 28px #27153e42;transform:translate3d(-999px,-999px,0)}
@media(max-width:720px){.teacher-pause{padding:22px 18px}.teacher-pause-head>span{font-size:17px}.teach-terms{gap:6px}.teach-terms>span{padding:7px 9px}.teacher-note{padding:16px 15px 16px 18px}.word-bank{gap:7px}.word-home button{padding:10px 11px}}

/* Revision 12: concept-by-concept teaching, learned-rule takeaways, exact word slots */
.teach-concepts{display:grid;gap:12px;margin:0 0 19px}.teach-concept{background:#351064;border:1px solid #9f7aea;border-radius:13px;padding:17px 18px}.teach-concept-title{display:flex;align-items:flex-start;gap:11px}.teach-concept-title>span{display:grid;place-items:center;width:25px;height:25px;border-radius:50%;background:#fef08a;color:#4c1d95;font:800 12px/1 'DM Sans',sans-serif;flex:0 0 auto}.teach-concept h3{margin:0;display:flex;align-items:baseline;gap:9px;flex-wrap:wrap}.teach-concept h3 b{font:800 18px/1.25 'DM Sans',sans-serif;color:#fef08a}.teach-concept h3 strong{font:800 16px/1.4 'Noto Sans Bengali','DM Sans',sans-serif;color:#fff}.teach-concept>p{margin:11px 0 0;color:#f1eaff;font-size:15px;line-height:1.75}.teach-concept>p>.english-sub{color:#cfc0ee;font-size:11px;line-height:1.5;margin-top:4px}.concept-examples{display:grid;gap:7px;margin-top:13px}.concept-examples>div{display:grid;grid-template-columns:minmax(108px,.8fr) 1.4fr;gap:10px;background:#ffffff12;border:1px solid #ffffff1c;border-radius:8px;padding:9px 11px}.concept-examples b{font:750 14px/1.45 'DM Sans',sans-serif;color:#fff}.concept-examples>div>span{color:#eee7fb;font-size:13px}.concept-examples .english-sub{color:#c6b9df;font-size:10px;margin-top:2px}.teacher-tip{margin-top:17px;padding:12px 14px;border:1px solid #ffffff2b;border-radius:9px;background:#2c105020;color:#e8def8}.teacher-tip>b{font-size:12px;color:#e1d4f5}.teacher-tip>.english-sub{display:inline;margin-left:7px;color:#baa9d8;font-size:10px}.teacher-tip>p{margin:6px 0 0;color:#ded3ee;font-size:13px;line-height:1.6}.teacher-tip>p>.english-sub{color:#b9a9d3;font-size:10px;margin-top:3px}.teacher-takeaway{position:relative;margin-top:19px;padding:18px 19px 18px 22px;background:#fef3c7;border:2px solid #facc15;border-left-width:7px;border-radius:10px;box-shadow:0 8px 20px #29115124}.teacher-takeaway>b{font-size:14px;color:#5f3700}.teacher-takeaway>.english-sub{color:#8a641c;font-size:10px}.teacher-takeaway ul{display:grid;gap:7px;margin:10px 0 0;padding-left:20px;color:#3c2b0c}.teacher-takeaway li{font-size:14px;font-weight:700;line-height:1.55}.teacher-takeaway li>.english-sub{color:#79683f;font-size:10px;font-weight:400;margin-top:2px}.word-home{display:inline-grid;min-height:45px;border:2px solid transparent;border-radius:9px;background:transparent}.word-home button{grid-area:1/1;width:100%;height:100%;box-sizing:border-box;white-space:nowrap}.word-home.empty{border:2px dashed #c8d0c5;background:#eef1ed}.word-home.empty button{visibility:hidden;pointer-events:none}.word-home.empty>span{display:none}
@media(max-width:720px){.teach-concept{padding:15px 14px}.teach-concept h3{display:grid;gap:2px}.concept-examples>div{grid-template-columns:1fr;gap:2px}.teacher-tip{padding:11px 12px}.teacher-takeaway{padding:16px 15px 16px 18px}}

/* Original in-story artifacts for Chapter 2 */
.real-artifact{width:min(560px,100%);margin:3px auto 0;background:#fff;border:1px solid #d8dfda;border-radius:14px;box-shadow:0 16px 38px #1e342719;color:#1d2925;overflow:hidden;font-family:'DM Sans','Noto Sans Bengali',sans-serif}.real-artifact header{position:static;height:auto;background:#173f35;color:#fff;border:0;padding:15px 18px;display:flex;align-items:center;justify-content:space-between}.real-artifact header small{font-size:10px;letter-spacing:.12em;color:#c7ddd4}.chat-artifact{padding-bottom:16px;background:#e8f0eb}.chat-bubble{width:82%;margin:14px 16px 0;background:#fff;border-radius:5px 14px 14px 14px;padding:11px 13px;box-shadow:0 3px 10px #233c3020}.chat-bubble:nth-child(odd){margin-left:auto;margin-right:16px;background:#e3f7cd;border-radius:14px 5px 14px 14px}.chat-bubble b{font-size:11px;color:#5d6c65}.chat-bubble p{margin:3px 0 0;font-size:15px;line-height:1.45}.flyer-artifact{padding:28px;background:#fff9df;border:2px solid #254e40;border-radius:5px}.flyer-artifact>small{letter-spacing:.12em;color:#68746f}.flyer-artifact h3{font-size:30px;line-height:1.12;color:#204a3e;margin:12px 0 22px}.flyer-line{display:flex;gap:12px;align-items:center;border-top:1px solid #d8d0ad;padding:12px 0;margin:0;font-weight:700}.flyer-line span{display:grid;place-items:center;width:25px;height:25px;border-radius:50%;background:#f2c94c;color:#173f35;font-size:12px;flex:0 0 auto}.calendar-artifact>div{display:grid;grid-template-columns:120px 1fr;border-top:1px solid #e0e5e2}.calendar-artifact>div>b,.calendar-artifact>div>span{padding:12px 16px}.calendar-artifact>div>b{background:#f2f6f3;color:#294b40}.calendar-artifact>div>span{color:#43534c}.profile-artifact header{justify-content:flex-start;gap:10px}.profile-avatar{display:inline-block;width:26px;height:26px;border:3px solid #d8ef91;border-radius:50%;color:transparent}.profile-artifact dl{margin:0}.profile-artifact dl>div{display:grid;grid-template-columns:145px 1fr;border-top:1px solid #e3e7e5}.profile-artifact dt,.profile-artifact dd{margin:0;padding:11px 15px}.profile-artifact dt{color:#6b7772;background:#f7f8f7;font-size:12px}.profile-artifact dd{font-weight:700}.artifact-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.artifact-cards article{background:#fff;border:1px solid #dce3de;border-radius:12px;padding:17px;box-shadow:0 8px 20px #1e342710}.artifact-cards h3{margin:0 0 10px;color:#204a3e;font-size:18px}.artifact-cards p{margin:5px 0;color:#53615b;font-size:14px}.board-artifact{padding-bottom:12px}.board-artifact>header{font-size:22px;font-weight:800;letter-spacing:.08em}.board-artifact>p{margin:0 16px;padding:13px 4px;border-bottom:1px dashed #ccd5d0;font-weight:650}.board-artifact>p:last-child{border:0}
@media(max-width:720px){.flyer-artifact{padding:22px 18px}.flyer-artifact h3{font-size:25px}.calendar-artifact>div{grid-template-columns:98px 1fr}.profile-artifact dl>div{grid-template-columns:115px 1fr}.artifact-cards{grid-template-columns:1fr}}
/* Word seats keep identical intrinsic geometry in every state. The outline takes no space. */
.word-bank .word-home,.word-bank .word-home.empty{display:inline-grid;flex:0 0 auto;border:0;min-width:0;min-height:0;padding:0;margin:0;box-sizing:border-box;background:none;outline:none}
.word-bank .word-home>button{grid-area:1/1;visibility:visible;display:block;width:auto;height:auto;margin:0;box-sizing:border-box;white-space:nowrap}
.word-bank .word-home.empty{outline:2px dashed #a8b4c4;outline-offset:-2px;background:#edf1f6;border-radius:12px}
.word-bank .word-home.empty>button{visibility:hidden;pointer-events:none}
.german-keys{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.german-keys button{min-width:40px;min-height:40px;border:1px solid #a6b3c8;border-radius:8px;background:#fff;color:#263656;font-size:18px}
.field-error{color:#a52131;font-size:14px}.journey-form input[aria-invalid=true]{border-color:#a52131}
.journey-dialogue .journey-line{grid-template-columns:90px minmax(0,1fr) auto}.journey-dialogue .journey-line>b{font-size:14px}
.journey-card .english-sub{font-size:14px;line-height:1.5}.journey-card .artifact-transcript{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.85;font-family:inherit}
@media(max-width:480px){.journey-dialogue .journey-line{grid-template-columns:65px minmax(0,1fr) auto}}
/* Real-world artifact formats for Chapters 3–12 */
.email-artifact dl{margin:0;background:#f7f8f7}
.email-artifact dl>div{display:grid;grid-template-columns:92px 1fr;border-bottom:1px solid #e3e7e5}
.email-artifact dt,.email-artifact dd{margin:0;padding:8px 15px}
.email-artifact dt{color:#6b7772;font-size:12px}
.email-artifact dd{font-weight:650}
.email-body{padding:14px 18px 18px}
.email-body p{margin:0 0 6px;line-height:1.6}
.table-artifact .table-scroll{overflow-x:auto}
.table-artifact table{width:100%;border-collapse:collapse;font-size:15px}
.table-artifact th{background:#f2f6f3;color:#294b40;text-align:left;padding:10px 14px;font-size:12px;letter-spacing:.04em}
.table-artifact td{padding:10px 14px;border-top:1px solid #e3e7e5;color:#2e3b36;font-weight:600}
.list-artifact{background:#fffdf3}
.list-artifact header{background:#5b4a1e}
.list-artifact ul{list-style:none;margin:0;padding:10px 18px 16px}
.list-artifact li{display:flex;gap:10px;padding:9px 0;border-bottom:1px dashed #ddd5bd;font-weight:600}
.list-artifact li:last-child{border:0}
.list-artifact li span{color:#8a7440;width:18px}
.sign-artifact{padding:22px 22px 18px;background:#fdf6d8;border:3px solid #1f3f35}
.sign-artifact>small{letter-spacing:.12em;color:#8b3a1a;font-weight:800}
.sign-artifact h3{font-size:26px;line-height:1.15;color:#1f3f35;margin:10px 0 14px}
.sign-artifact p{margin:6px 0;font-weight:600;color:#33433d}
@media(max-width:650px){.email-artifact dl>div{grid-template-columns:78px 1fr}.table-artifact table{font-size:13px}.table-artifact th,.table-artifact td{padding:8px 9px}.sign-artifact h3{font-size:22px}}
.progress-chapter{margin:0 0 12px}
.progress-chapter summary{display:flex;justify-content:space-between;align-items:center;gap:12px;cursor:pointer;list-style:none;padding:6px 2px}
.progress-chapter summary::-webkit-details-marker{display:none}
.progress-chapter summary h2{margin:0;font-size:19px}
.progress-chapter summary small{color:#6d7a70;white-space:nowrap}
.progress-chapter[open] summary{margin-bottom:8px}

.journey-bottom{grid-template-columns:minmax(0,460px) minmax(190px,280px)}.journey-feedback{max-height:min(32dvh,260px);overflow-y:auto;overscroll-behavior:contain;overflow-wrap:anywhere;min-width:0}.journey-answer p{margin:4px 0;white-space:pre-wrap}.journey-explanation{margin:5px 0 0}.journey-bottom.wrong .journey-feedback{color:#6b261c}.journey-bottom.correct .journey-feedback{color:#295823}.journey-actions{min-width:0}.journey-secondary{white-space:nowrap}.journey-shell:has(.journey-bottom.wrong) .journey-option.selected{border-color:#ba4136;background:#fff0ec}.match-grid button.match-wrong{animation:match-wrong .65s ease-out}@keyframes match-wrong{0%,65%{border-color:#ba4136;background:#ffe6df;color:#722519}100%{border-color:#dce3da;background:#fff;color:var(--ink)}}@media(max-width:720px){.journey-bottom{grid-template-columns:1fr}.journey-feedback{max-height:30dvh}.journey-actions .journey-secondary{flex:0 0 auto}.journey-actions .journey-primary{flex:1;min-width:0}}
.grammar-filters{display:grid;grid-template-columns:minmax(180px,1fr) minmax(200px,2fr);gap:16px}
.grammar-filters label{min-width:0}
@media(max-width:600px){.grammar-filters{grid-template-columns:1fr}}
.speaking-model summary{cursor:pointer;font-weight:700}.speaking-model p{line-height:1.6}.speaking-actions{display:flex;flex-wrap:wrap;gap:10px;margin:12px 0}.speaking-actions button,.clock-time-controls button{min-height:44px;border:1px solid #bbc7bb;border-radius:10px;padding:10px 16px;background:#fff;color:#153632;font:inherit;font-weight:650;cursor:pointer}.speaking-actions button:disabled{opacity:.5;cursor:default}.record-practice{border-top:1px solid #dce3da;margin-top:18px;padding-top:18px}.record-practice h2{font-size:1.2rem}.record-practice p{font-size:1rem;line-height:1.5}.record-practice audio{width:100%;margin:8px 0}.speak-card small{display:block;line-height:1.5}.speak-card>label{margin-top:18px}.learning-visual{background:#fff;border:1px solid #c6d3c0;border-radius:18px;padding:20px;margin:16px 0 24px}.learning-visual h2{font-size:1.25rem;margin:0 0 14px}.clock-time-controls{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}.clock-time-controls button[aria-pressed=true]{background:#153632;color:#fff}.learning-clock{width:180px;max-width:100%;height:auto}.clock-hour{stroke:#153632;stroke-width:7;stroke-linecap:round}.clock-minute{stroke:#946113;stroke-width:4;stroke-linecap:round}#clock-contrast-body{display:grid;grid-template-columns:200px 1fr;gap:24px;align-items:center}.clock-face{text-align:center}.clock-face small{display:block;margin-top:8px}.clock-digital{font-size:1.6rem;font-variant-numeric:tabular-nums}.clock-meaning h3{font-size:1.4rem;margin:4px 0}.clock-meaning p{margin:6px 0;line-height:1.5}.clock-hour-path{display:flex;align-items:center;gap:10px;margin:16px 0 6px}.clock-hour-path>div{flex:1;height:12px;background:#e7ece2;border-radius:8px;overflow:hidden}.clock-hour-path i{display:block;background:#946113;height:100%}@media(max-width:600px){#clock-contrast-body{grid-template-columns:1fr;gap:16px}.learning-clock{width:150px}.learning-visual{padding:16px}.speaking-actions button{flex:1 1 140px}}


/* v36 · one teaching surface; readable, distinct documents without extra chrome */
.lesson-material-overlay,.grammar-lesson-overlay,.lesson-material-chooser{position:fixed;inset:0;z-index:3000;background:#1028209c;display:grid;place-items:center;padding:18px}
.lesson-material-sheet{width:min(680px,100%);max-height:94dvh;display:grid;grid-template-rows:auto minmax(0,1fr);background:#e8ece8;border-radius:18px;box-shadow:0 20px 60px #07150f40;overflow:hidden}
.lesson-material-sheet>header,.lesson-material-choice-sheet>header{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:12px 18px;background:#fff;border-bottom:1px solid #d8e0d7;color:#173f35}
.lesson-material-sheet>header b,.lesson-material-choice-sheet>header>b{font-size:1rem}
.lesson-material-sheet>header button,.lesson-material-choice-sheet>header>button,.grammar-window-head>button{flex:0 0 44px;width:44px;height:44px;border:1px solid #cad4c9;border-radius:50%;background:#fff;font-size:24px;color:#173f35;cursor:pointer}
.lesson-material-body{min-height:0;overflow:auto;padding:24px;overscroll-behavior:contain}
.lesson-material-body>.tactile-object,.lesson-material-body>.real-artifact,.lesson-material-body>.course-notice,.lesson-material-body>.artifact-paper{max-width:620px;margin:0 auto}
.tactile-object{filter:none}
.german-letter{width:min(590px,100%);max-width:100%;min-height:0;padding:0 0 32px;background:#fff;border:1px solid #d7d7d2;border-radius:2px;box-shadow:0 6px 18px #24322912;overflow:hidden;color:#202622;font-family:Arial,Helvetica,sans-serif}
.german-letter .letterhead{position:static;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:24px 30px 0;background:#fff;color:#202622;border:0}
.letter-company{margin-left:auto;text-align:right}
.letter-company>div{display:grid;gap:4px}
.letter-company b{font-size:1rem;line-height:1.4;color:#202622}
.german-letter .letterhead .letter-company small{font-size:.8125rem;color:#59645e}
.letterhead-meta{font-size:.8125rem;color:#59645e}
.letter-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;padding:24px 30px 0}
.letter-address{min-width:0}
.letter-return{display:block;font-size:.75rem;line-height:1.5;color:#59645e;overflow-wrap:anywhere}
.letter-address address{display:grid;gap:2px;padding-top:12px;font-style:normal;font-size:1rem;line-height:1.5;overflow-wrap:anywhere}
.letter-info{display:grid;align-content:start;gap:3px;font-size:.8125rem;color:#59645e}
.letter-info b{font-size:.875rem;color:#202622}
.german-letter .letter-subject{margin:28px 30px 0;font:700 1rem/1.5 Arial,Helvetica,sans-serif;color:#202622}
.german-letter .letter-body{padding:22px 30px 0}
.german-letter .letter-body p{margin:0 0 14px;font:400 1rem/1.65 Arial,Helvetica,sans-serif;color:#202622;overflow-wrap:anywhere}
.german-letter .letter-body .letter-salutation{margin-bottom:18px}
.german-letter .letter-body .letter-closing{margin-top:24px;margin-bottom:18px}
.german-letter .letter-body .letter-signature{font-weight:600}
.letter-space{height:6px}
.tactile-calendar{width:min(560px,100%)}
.tactile-calendar .calendar-artifact{border-radius:2px;border:1px solid #d3cfc3;background:#fffdf8;box-shadow:0 6px 18px #2c342d12}
.tactile-calendar .calendar-artifact>header{background:#fffdf8;color:#25342e;border-bottom:2px solid #496d60;padding:18px}
.tactile-calendar .calendar-artifact>header b{font-size:1.125rem}
.tactile-calendar .calendar-artifact>header small{color:#59645e;font-size:.8125rem}
.tactile-calendar .calendar-artifact>div{grid-template-columns:minmax(7.5rem,max-content) minmax(0,1fr);min-height:54px;border-top:1px solid #ddd8cd}
.tactile-calendar .calendar-artifact>div>b{white-space:nowrap;overflow-wrap:normal;background:#f2efe6;color:#3e5d52;border-right:1px solid #ddd8cd}
.tactile-calendar .calendar-artifact>div>b,.tactile-calendar .calendar-artifact>div>span{padding:12px 14px;font-size:1rem;line-height:1.5;overflow-wrap:anywhere}
.chat-artifact{width:min(430px,100%);background:#dfe9e3;border:1px solid #c8d2cc;border-radius:16px;box-shadow:none;padding-bottom:14px;overflow:hidden}
.chat-artifact>header{background:#f7faf8;color:#23362f;border-bottom:1px solid #d6dfd9;padding:14px}
.chat-artifact>header span{font-weight:800}
.chat-artifact>header small{color:#59645e;font-size:.8125rem}
.chat-artifact .chat-bubble{max-width:85%;width:fit-content;min-width:0;margin:10px 12px 0;padding:10px 12px;background:#fff;border:0;border-radius:4px 12px 12px 12px;box-shadow:none}
.chat-artifact .chat-bubble:nth-child(odd){margin-left:auto;background:#dff4cc;border-radius:12px 4px 12px 12px}
.chat-artifact .chat-bubble b{display:block;font-size:.8125rem;color:#4e6256;margin-bottom:4px}
.chat-artifact .chat-bubble p{font-size:1rem;line-height:1.5;overflow-wrap:anywhere}
.email-artifact{width:min(590px,100%);border:1px solid #d5dbd7;border-radius:6px;box-shadow:none;overflow:hidden}
.email-artifact>header{background:#f3f5f4;color:#26322d;border-bottom:1px solid #dce1de;padding:12px 16px}
.email-artifact>header b{font-size:1rem}
.email-artifact>header small{font-size:.8125rem;color:#59645e}
.email-artifact dl{background:#fff;padding:12px 16px;border-bottom:1px solid #e0e5e2}
.email-artifact dl>div{display:grid;grid-template-columns:64px minmax(0,1fr);border:0;padding:3px 0}
.email-artifact dt,.email-artifact dd{padding:0;font-size:.875rem;line-height:1.5;overflow-wrap:anywhere}
.email-artifact dt{color:#59645e}
.email-artifact dd{font-weight:600;color:#28332e}
.email-artifact .email-body{background:#fff;padding:20px}
.email-artifact .email-body p{font-size:1rem;line-height:1.65;margin:0 0 12px;color:#28332e}
.flyer-artifact{width:min(500px,100%);background:#fffaf0;border:1px solid #cfc7b2;border-radius:1px;box-shadow:0 6px 18px #31362912;padding:28px;transform:none}
.flyer-artifact>small{font-size:.8125rem;color:#59645e}
.flyer-artifact h3{font:800 clamp(24px,5vw,34px)/1.2 'DM Sans',sans-serif;color:#173f35;margin:12px 0 22px}
.flyer-artifact .flyer-line{display:block;padding:12px 0;border-top:1px solid #ddd5bf;font-size:1rem;line-height:1.5}
.flyer-artifact .flyer-line span{display:none}
.list-artifact{width:min(430px,100%);background:#fffdf0;border:1px solid #d8d0ac;border-radius:2px;box-shadow:none;transform:none}
.list-artifact>header{background:#fffdf0;color:#2f342e;border-bottom:1px solid #d8d0ac;padding:16px 18px}
.list-artifact>header small{color:#6e644b}
.list-artifact ul{padding:8px 18px 20px;background:#fffdf0}
.list-artifact li{min-height:36px;align-items:start;padding:8px 0;border:0;border-bottom:1px solid #e5dfc7;font:400 1rem/1.5 'DM Sans',sans-serif;color:#3b3a31}
.list-artifact li span{color:#695b32}
.sign-artifact{width:min(480px,100%);background:#fbf7e7;border:2px solid #313b36;border-radius:1px;box-shadow:none;padding:24px;text-align:center}
.sign-artifact>small{font-size:.8125rem;color:#8d321f}
.sign-artifact h3{font:900 clamp(24px,5vw,32px)/1.2 'DM Sans',sans-serif;color:#1f322b;margin:14px 0 18px}
.sign-artifact p{font-size:1rem;line-height:1.5;color:#38443f}
.table-artifact{width:min(600px,100%);border-radius:2px;border:1px solid #d4dad6;box-shadow:none}
.table-artifact>header{background:#f4f6f5;color:#27342e;border-bottom:1px solid #dce2de;padding:14px 16px}
.table-artifact>header small{color:#59645e}
.table-artifact table{background:#fff;font-size:1rem}
.table-artifact th{background:#eef2ef;color:#33483f;font-size:.875rem;border-bottom:1px solid #dce2de}
.table-artifact td{font-weight:500;color:#303a36;border-top:1px solid #e5e9e6}
.board-artifact{width:min(540px,100%);background:#24493f;border:4px solid #765537;border-radius:2px;box-shadow:none;padding:12px;color:#f7f4e7}
.board-artifact>header{background:transparent;color:#fbf7de;border:0;padding:8px 8px 14px;font-size:1.25rem}
.board-artifact>p{color:#f7f4e7;border-bottom:1px solid #ffffff35;font-size:1rem;line-height:1.5}
.lesson-material-button{margin-right:auto;min-width:52px!important;padding:8px 10px!important;display:inline-flex;align-items:center;justify-content:center;gap:6px}
.lesson-material-button>span{font-size:18px;line-height:1}
.lesson-material-button small{font-size:.875rem;font-weight:800}
.lesson-material-chooser{place-items:end center}
.lesson-material-choice-sheet{width:min(460px,100%);max-height:90dvh;background:#fff;border-radius:18px;box-shadow:0 20px 60px #07150f40;overflow:auto}
.lesson-material-choice-sheet>div{display:grid;padding:8px}
.lesson-material-choice-sheet>div>button{display:grid;grid-template-columns:32px minmax(0,1fr);gap:12px;align-items:center;text-align:left;border:0;border-bottom:1px solid #e5ebe3;background:#fff;padding:16px 12px;color:#173f35;cursor:pointer}
.lesson-material-choice-sheet>div>button:last-child{border-bottom:0}
.lesson-material-choice-sheet i{font-style:normal;font-size:22px;text-align:center}
.lesson-material-choice-sheet span>b{font-size:1rem;line-height:1.5}
.progressive-dialogue{display:grid;gap:12px;max-width:640px;margin:0 auto}
.dialogue-next{display:block;margin:18px auto 0;min-height:48px;border:0;border-radius:12px;background:#173f35;color:#fff;padding:11px 22px;font:inherit;font-size:1rem;font-weight:800;cursor:pointer}
.dialogue-complete{text-align:center;color:#517260;font-weight:700;margin:16px 0 0}
.grammar-lesson-entry{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;border:0;border-bottom:1px solid #d9e2d6;border-radius:0;background:#fff;padding:18px 12px;margin:0;color:#173f35;cursor:pointer;box-shadow:none}
.grammar-lesson-entry:hover{background:#f7f9f5}
.grammar-lesson-entry>span{display:grid;gap:4px}
.grammar-lesson-entry b{font-size:1rem;line-height:1.5}
.grammar-lesson-entry .english-sub{font-size:.8125rem}
.grammar-lesson-entry i{font-style:normal;font-size:22px;color:#6f8d62}
.grammar-lesson-overlay{place-items:end center;padding:18px 18px 0}
.grammar-lesson-window{width:min(960px,100%);height:94dvh;max-height:94dvh;background:#f7f3ff;border-radius:20px 20px 0 0;overflow:hidden;display:grid;grid-template-rows:auto minmax(0,1fr);box-shadow:0 -16px 60px #2b153f35}
.grammar-window-head{height:auto;grid-row:1;display:grid;grid-template-columns:44px minmax(0,1fr);gap:14px;align-items:center;padding:18px 22px;background:#4c1d95;color:#fff}
.grammar-window-head>button{color:#4c1d95;border:0}
.grammar-window-head h1{margin:3px 0 0;color:#fff;font-size:clamp(22px,3vw,30px);line-height:1.5;letter-spacing:normal}
.grammar-window-head small,.grammar-window-head .english-sub{font-size:.8125rem;color:#ddd1f0}
.grammar-lesson-content{grid-row:2;min-width:0;min-height:0;overflow:auto;padding:24px 28px;overscroll-behavior:contain}
.grammar-mini-rule{padding:16px 18px;background:#fff7c9;border:0;border-left:4px solid #e6b900;border-radius:4px}
.grammar-mini-rule strong{font:800 clamp(18px,3vw,24px)/1.55 'DM Sans',sans-serif;color:#4c1d95;overflow-wrap:anywhere}
.grammar-mini-reference{margin:0;overflow:auto;color:#342441}
.grammar-mini-reference table{width:100%;border-collapse:collapse;background:transparent;font-size:1rem}
.grammar-mini-reference th,.grammar-mini-reference td{padding:12px;border-bottom:1px solid #ddd1ed;text-align:left;vertical-align:top}
.grammar-mini-reference th{background:#ede5f8;color:#4c1d95;font-weight:700}
.grammar-mini-reference p{color:#4f4260;line-height:1.8;font-size:1rem}
.grammar-mini-reference .word-order{display:flex;flex-wrap:wrap;gap:8px;background:transparent;color:#382453;margin:0 0 16px}
.grammar-mini-reference .word-order b{color:#6d28d9}
.grammar-lesson-entry:focus-visible{outline:3px solid #7c3aed;outline-offset:-3px}
@media(max-width:720px){
  .lesson-material-overlay,.grammar-lesson-overlay,.lesson-material-chooser{padding:0;place-items:end center}
  .lesson-material-sheet{width:100%;max-height:96dvh;border-radius:18px 18px 0 0}
  .lesson-material-body{padding:16px}
  .lesson-material-choice-sheet{width:100%;border-radius:18px 18px 0 0}
  .german-letter .letterhead{padding:20px 20px 0}
  .letter-grid{grid-template-columns:1fr;padding:22px 20px 0;gap:16px}
  .german-letter .letter-subject{margin:24px 20px 0}
  .german-letter .letter-body{padding:20px 20px 0}
  .tactile-calendar .calendar-artifact>div{grid-template-columns:minmax(7.5rem,max-content) minmax(0,1fr)}
  .tactile-calendar .calendar-artifact>div>b,.tactile-calendar .calendar-artifact>div>span{padding:12px 10px}
  .flyer-artifact,.sign-artifact{padding:24px 20px}
  .journey-actions{width:100%}
  .lesson-material-button{flex:0 0 48px;min-width:48px!important;width:48px;height:48px;padding:0!important}
  .lesson-material-button small{display:none}
  .journey-actions .journey-secondary:not(.lesson-material-button){flex:0 0 auto}
  .journey-actions .journey-primary{flex:1;min-width:0;width:auto}
  .grammar-lesson-window{height:96dvh;max-height:96dvh;width:100%;border-radius:18px 18px 0 0}
  .grammar-window-head{padding:16px}
  .grammar-lesson-content{padding:22px 18px}
}
h1:lang(bn),h2:lang(bn),h3:lang(bn){letter-spacing:normal;line-height:1.5}

/* v38: one continuous reading surface, with one body scrollbar. */
.grammar-reading{padding:28px clamp(18px,4vw,40px) 48px;scrollbar-gutter:stable}
.grammar-section{max-width:760px;margin:0 auto;padding:0 0 28px}
.grammar-section+.grammar-section{padding-top:24px;border-top:1px solid #ddd1ed}
.grammar-section:last-child{padding-bottom:0}
.grammar-section h2{margin:0 0 16px;font-size:1.125rem;line-height:1.6;color:#4c1d95}
.grammar-section>p{font-size:1rem;line-height:1.9;color:#40334f;margin:0 0 16px}
.grammar-section>p:last-child{margin-bottom:0}
.grammar-structure-parts{margin:20px 0 0;display:grid;gap:0}
.grammar-structure-parts>div{display:grid;grid-template-columns:minmax(100px,1fr) minmax(0,2fr);gap:16px;padding:12px 0;border-bottom:1px solid #e3d9ee}
.grammar-structure-parts dt{font-weight:700;color:#4c1d95;font-size:1rem}
.grammar-structure-parts dd{margin:0;font-size:1rem;line-height:1.8;color:#4f4260}
.grammar-mini-reference{max-width:100%;overscroll-behavior:contain}
.grammar-mini-reference .muted{color:#4f4260}
.grammar-examples{list-style:none;padding:0;margin:0;display:grid;gap:0}
.grammar-examples li{padding:18px 0;border-bottom:1px solid #e3d9ee}
.grammar-examples li:first-child{padding-top:0}
.grammar-examples li:last-child{border-bottom:0;padding-bottom:0}
.grammar-examples p{margin:0 0 6px;font-size:1rem;line-height:1.8;color:#40334f}
.grammar-examples p[lang=de]{font:700 1.125rem/1.7 'DM Sans',sans-serif;color:#4c1d95}
.grammar-examples small{display:block;margin-top:8px;font-size:.875rem;line-height:1.8;color:#695579}
@media(max-width:360px){.grammar-structure-parts>div{grid-template-columns:1fr;gap:4px}}