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minmax(280px,.9fr);gap:20px}.lesson-coach{width:150px;height:150px}.king-coach-scene{min-height:164px}}@media(max-width:850px){.king-lesson-layout{grid-template-columns:1fr}.king-board-panel{margin:auto;max-width:520px}.king-coaching-panel{max-width:600px;width:100%;margin:auto}.king-coach-scene{min-height:136px}.lesson-coach{width:136px;height:136px}.king-coach-bubble{min-height:0}}@media(max-width:480px){.king-lesson{padding:8px;margin:8px 0;border-radius:8px}.king-lesson-header{flex-direction:column;gap:10px}.king-lesson-language{align-self:end}.king-board-caption{font-size:12px}.king-board-stage{border-width:4px}.king-coach-bubble{padding:18px 16px 8px}.king-coach-bubble p{font-size:16px}.king-secondary-actions{flex-direction:column}.king-coach-intro strong{font-size:16px}.king-coach-rule{font-size:12px}}@media(prefers-reduced-motion:reduce){.king-lesson *,.king-lesson *:before,.king-lesson *:after{animation:none!important;transition:none!important}.king-capture-effect{display:none}}.lesson-player{--lesson-gutter: 16px;--lesson-gap: 24px;--lesson-frame-gap: 12px;--lesson-header-height: 44px;--lesson-rail-width: 390px;height:100%;min-height:0;display:grid;grid-template-rows:var(--lesson-header-height) minmax(0,1fr);gap:var(--lesson-frame-gap);padding:var(--lesson-gutter);background:#302e2b;color:#f7f5ef;font-family:Inter,Nirmala UI,system-ui,sans-serif}.lesson-player.is-preview{height:100dvh}.lesson-player *,.lesson-player *:before,.lesson-player *:after{box-sizing:border-box}.lesson-player button,.lesson-player select{font:inherit;cursor:pointer}.lesson-player button{min-height:44px;border:1px solid #55534c;background:#353430;color:inherit;border-radius:7px;padding:6px 12px}.lesson-player button:disabled{opacity:.4;cursor:default}.lesson-player :is(button,a,select):focus-visible{outline:3px solid #d7e996;outline-offset:2px}.lesson-header{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:13px}.lesson-header a{color:inherit;text-decoration:none}.lesson-header>div{display:flex;flex:none;gap:8px}.lesson-header button{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid #77796b;background:#41443a;box-shadow:inset 0 1px #ffffff12;min-height:44px}.lesson-header button:hover{background:#505643;border-color:#a8cb6d}.lesson-header button:active{background:#353c2d}.lesson-header button svg{width:18px;height:18px;flex:none;color:#d7e996}.lesson-header,.lesson-workspace{width:100%;max-width:calc(100dvh - 2 * var(--lesson-gutter) - var(--lesson-header-height) - var(--lesson-frame-gap) + var(--lesson-rail-width) + var(--lesson-gap));margin-inline:auto}.lesson-workspace{min-height:0;display:grid;grid-template-columns:minmax(0,1fr) 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button{border:0;background:transparent;color:#4b5540;padding:4px 10px}.narration-controls button{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;padding:0;border-radius:8px}.narration-controls button:not(:disabled):hover{background:#294f3912}.narration-controls button svg{width:22px;height:22px}.narration-controls>span{margin-left:auto;font-size:11px;color:#58634d}.lesson-celebration{background:linear-gradient(135deg,#d7e99626,#8fb46c0d),#24352be6;color:#f2f4e8;border:1px solid #d7e99666;padding-bottom:16px;-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:inset 0 1px #ffffff26,0 12px 32px #0002;animation:lesson-celebration-enter .3s ease-out}.lesson-celebration:before{display:none}.lesson-celebration-heading{display:flex;align-items:center;gap:10px;margin-bottom:8px;font-size:21px;color:#d7e996}.lesson-celebration-heading svg{width:30px;height:30px}.lesson-celebration p{min-height:64px}.lesson-celebration .narration-controls 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button{display:flex;justify-content:space-between;align-items:center;gap:8px;min-height:56px;text-align:left}.lesson-chapters button[aria-current]{border-color:#d7e996}.lesson-promotion{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.shell:has(.lesson-player){height:100dvh;min-height:0}.shell:has(.lesson-player) .shell__main{min-height:0;height:100%}.shell:has(.lesson-player) .shell__content{min-height:0;padding:0;display:grid;grid-template-rows:minmax(0,1fr)}.shell:has(.lesson-player) .shell__top{display:none}@media(max-width:700px)and (orientation:portrait){.lesson-player{--lesson-gutter: 8px;--lesson-gap: 6px;--lesson-frame-gap: 4px}.lesson-header{font-size:11px}.lesson-header,.lesson-workspace{max-width:none}.lesson-header>strong,.lesson-header>a{min-width:0;max-width:56%;line-height:1.3}.lesson-header .lesson-map-label{display:none}.lesson-header button{font-size:12px;padding:4px 8px;gap:4px}.lesson-workspace{grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr) auto}.lesson-rail{padding:10px 12px;min-height:252px}.lesson-heading{padding-bottom:6px}.lesson-heading h1{font-size:17px}.lesson-conversation{flex-direction:row;align-items:center;padding:2px 0;min-height:100px}.lesson-player .lesson-coach{width:62px;height:74px}.lesson-speech{padding:8px 10px 0}.lesson-speech:before{left:-5px;top:35px;width:12px;height:12px}.lesson-speech p{font-size:14px;line-height:1.55;min-height:44px}.lesson-celebration-heading{font-size:16px;gap:6px;margin-bottom:4px}.lesson-celebration-heading svg{width:22px;height:22px}.lesson-celebration p{min-height:40px}.lesson-celebration{padding-bottom:8px}.lesson-player .lesson-primary{min-height:44px;font-size:15px}.lesson-actions{gap:4px;padding-top:6px}.lesson-action-row{min-height:44px}.lesson-action-row button{font-size:12px;line-height:1.4;padding:4px 8px}}@media(max-height:620px)and (orientation:landscape){.lesson-player{--lesson-gutter: 8px;--lesson-gap: 12px;--lesson-frame-gap: 4px;--lesson-rail-width: clamp(270px, 42vw, 390px)}.lesson-workspace{grid-template-columns:minmax(0,1fr) var(--lesson-rail-width)}.lesson-rail{padding:10px}.lesson-heading{padding-bottom:6px}.lesson-heading h1{font-size:18px}.lesson-conversation{flex-direction:row;align-items:center;padding:2px 0}.lesson-player .lesson-coach{width:56px;height:70px}.lesson-speech{padding:8px 10px 0}.lesson-speech p{font-size:14px;min-height:70px;line-height:1.5}.lesson-speech:before{left:-5px;top:35px}.lesson-celebration-heading{font-size:16px;margin-bottom:4px}.lesson-celebration p{min-height:40px}.lesson-celebration{padding-bottom:8px}.lesson-actions{gap:4px;padding-top:6px}.lesson-player .lesson-primary{min-height:44px;font-size:15px}.lesson-action-row{min-height:44px}.lesson-action-row button{font-size:12px;line-height:1.4;padding:4px 8px}}@media(max-width:360px)and (orientation:portrait){.lesson-rail{min-height:272px}.lesson-heading h1{font-size:15px}}@media(max-height:350px),(max-width:280px){.lesson-player{min-height:480px}}@media(prefers-reduced-motion:reduce){.lesson-player *,.lesson-player *:before,.lesson-player *:after{animation:none!important;transition:none!important}}.shell{--sh-bg: #0A0E13;--sh-surface: #10151E;--sh-card: #151C29;--sh-line: rgba(255, 255, 255, .07);--sh-gold-line: rgba(212, 175, 55, .28);--sh-gold: #D4AF37;--sh-gold-2: #F4D03F;--sh-ivory: #F2EFE6;--sh-text: #C9CFDA;--sh-muted: #8B93A1;display:flex;min-height:100vh;background:var(--sh-bg);color:var(--sh-text)}.shell__side{position:sticky;top:0;align-self:flex-start;display:flex;flex-direction:column;gap:3px;width:228px;height:100vh;height:100dvh;flex:none;padding:18px 12px 14px;background:var(--sh-surface);border-right:1px solid var(--sh-line);overflow-y:auto;z-index:1200}.shell__logo{display:flex;align-items:center;gap:10px;padding:2px 10px 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var(--sh-line);border-radius:99px;background:var(--sh-card);font-size:12.5px;font-weight:600;color:var(--sh-text);white-space:nowrap;font-variant-numeric:tabular-nums}.shell__chip--gold{border-color:var(--sh-gold-line);color:var(--sh-gold-2)}.shell__chip--flame{border-color:#ff98384d;color:#ff9838}.shell__content{flex:1;min-width:0}.shell__burger{display:none;border:1px solid var(--sh-line);background:var(--sh-card);color:var(--sh-gold-2);font-size:17px;border-radius:8px;padding:5px 11px;cursor:pointer}.shell__scrim{display:none;position:fixed;inset:0;background:#04060a99;z-index:1190}.shell__nav:focus-visible,.shell__lang button:focus-visible,.shell__logout:focus-visible,.shell__burger:focus-visible{outline:2px solid var(--sh-gold-2);outline-offset:2px}@media(max-width:900px){.shell__side{position:fixed;left:0;top:0;transform:translate(-100%);transition:transform .25s ease;box-shadow:0 0 40px 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