._skeleton_42ju1_8{--skeleton-base: var(--clr-white-08);--skeleton-highlight: var(--clr-white-18);--skeleton-anim: shimmer;--skeleton-speed: 1.4s;background:var(--skeleton-base);border-radius:6px;position:relative;overflow:hidden}@keyframes _shimmer_42ju1_1{0%{background-position:-400px 0}to{background-position:400px 0}}._skeleton_42ju1_8[style*="--skeleton-anim: shimmer"],._skeleton_42ju1_8:not([style*=--skeleton-anim]){background:linear-gradient(90deg,var(--skeleton-base) 0%,var(--skeleton-highlight) 50%,var(--skeleton-base) 100%);background-size:800px 100%;animation:_shimmer_42ju1_1 var(--skeleton-speed) ease-in-out infinite}@keyframes _pulse_42ju1_1{0%,to{opacity:1}50%{opacity:.35}}._skeleton_42ju1_8[style*="--skeleton-anim: pulse"]{background:var(--skeleton-base);animation:_pulse_42ju1_1 var(--skeleton-speed) ease-in-out infinite}@media (prefers-reduced-motion: reduce){._skeleton_42ju1_8{animation:none;opacity:.5}}._textGroup_42ju1_58{display:flex;flex-direction:column;gap:10px;width:100%}._textGroup_42ju1_58 ._skeleton_42ju1_8{height:12px}._card_42ju1_70{display:flex;align-items:center;gap:14px;padding:16px;background:var(--clr-white-04);border:1px solid var(--clr-white-07);border-radius:var(--radius-md, 14px)}._cardAvatar_42ju1_80{flex-shrink:0;width:48px;height:48px;border-radius:50%}._cardLines_42ju1_87{flex:1;display:flex;flex-direction:column;gap:0}._avatar_42ju1_95{display:block;flex-shrink:0}._logo_42ju1_101{display:inline-flex;align-items:center;gap:2px}._screen_42ju1_108{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:60vh;gap:20px}._message_42ju1_117{color:var(--clr-white-45);font-size:var(--font-sm);margin:0;letter-spacing:.02em}*{margin:0;padding:0;box-sizing:border-box}:root{--clr-accent: #00d4ff;--clr-accent-secondary: #7b2ff7;--clr-accent-grad-start: #1e1b4b;--clr-accent-grad-end: #14b8a6;--clr-success: #22c55e;--clr-danger: #ef4444;--clr-warning: #f59e0b;--clr-bg-primary: #1a1a2e;--clr-bg-secondary: #16213e;--clr-text-primary: #fff;--clr-text-secondary: var(--text-55);--clr-bg-body: #050505;--clr-glow: rgba(30, 58, 138, .2);--clr-vignette: rgba(0, 0, 0, .4);--clr-hex-stroke: rgba(20, 184, 166, .06);--clr-hex-fill: rgba(20, 184, 166, .02);--clr-hex-glow-stroke: rgba(20, 184, 166, .2);--clr-hex-glow-fill: rgba(20, 184, 166, .06);--clr-text-on-light: #fff;--surface-card: rgba(255, 255, 255, .05);--surface-card-border: rgba(255, 255, 255, .18);--surface-input-bg: rgba(255, 255, 255, .05);--surface-input-border: rgba(255, 255, 255, .2);--text-muted: rgba(255, 255, 255, .65);--text-40: rgba(255, 255, 255, .4);--text-50: rgba(255, 255, 255, .5);--text-55: rgba(255, 255, 255, .55);--text-60: rgba(255, 255, 255, .6);--text-65: rgba(255, 255, 255, .65);--text-75: rgba(255, 255, 255, .75);--text-80: rgba(255, 255, 255, .8);--text-85: rgba(255, 255, 255, .85);--text-90: rgba(255, 255, 255, .9);--surface-02: rgba(255, 255, 255, .02);--surface-03: rgba(255, 255, 255, .03);--surface-04: rgba(255, 255, 255, .04);--surface-05: rgba(255, 255, 255, .05);--surface-08: rgba(255, 255, 255, .08);--surface-10: rgba(255, 255, 255, .1);--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px;--radius-pill: 100px;--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .3s ease;--font-xs: .6875rem;--font-sm: .8125rem;--font-base: .9375rem;--font-md: 1rem;--font-lg: 1.125rem;--font-xl: 1.25rem;--font-2xl: 1.5rem;--font-3xl: 1.875rem;--font-4xl: 2.25rem;--font-5xl: 3rem;--font-6xl: 3.75rem;--font-7xl: 4.5rem;--text-xs: var(--font-xs);--text-sm: var(--font-sm);--text-base: var(--font-base);--text-md: var(--font-md);--text-lg: var(--font-lg);--text-xl: var(--font-xl);--text-2xl: var(--font-2xl);--text-3xl: var(--font-3xl);--text-4xl: var(--font-4xl);--text-5xl: var(--font-5xl);--text-6xl: var(--font-6xl);--text-7xl: var(--font-7xl);--fw-thin: 100;--fw-extralight: 200;--fw-light: 300;--fw-regular: 400;--fw-medium: 500;--fw-semibold: 600;--fw-bold: 700;--fw-extrabold: 800;--fw-black: 900;--lh-none: 1;--lh-tight: 1.15;--lh-snug: 1.3;--lh-normal: 1.5;--lh-relaxed: 1.65;--lh-loose: 1.8;--ls-tightest: -.05em;--ls-tighter: -.03em;--ls-tight: -.01em;--ls-normal: 0;--ls-wide: .03em;--ls-wider: .06em;--ls-widest: .12em;--ls-label: .1em;--clr-accent-05: rgba(0, 212, 255, .05);--clr-accent-08: rgba(0, 212, 255, .08);--clr-accent-10: rgba(0, 212, 255, .1);--clr-accent-12: rgba(0, 212, 255, .12);--clr-accent-15: rgba(0, 212, 255, .15);--clr-accent-20: rgba(0, 212, 255, .2);--clr-accent-25: rgba(0, 212, 255, .25);--clr-accent-30: rgba(0, 212, 255, .3);--clr-accent-35: rgba(0, 212, 255, .35);--clr-accent-40: rgba(0, 212, 255, .4);--clr-accent-50: rgba(0, 212, 255, .5);--clr-accent-80: rgba(0, 212, 255, .8);--clr-accent-sec-08: rgba(123, 47, 247, .08);--clr-accent-sec-10: rgba(123, 47, 247, .1);--clr-accent-sec-12: rgba(123, 47, 247, .12);--clr-accent-sec-15: rgba(123, 47, 247, .15);--clr-accent-sec-20: rgba(123, 47, 247, .2);--clr-accent-sec-30: rgba(123, 47, 247, .3);--clr-accent-sec-40: rgba(123, 47, 247, .4);--clr-accent-sec-60: rgba(123, 47, 247, .6);--clr-accent-sec-80: rgba(123, 47, 247, .8);--surface-raised: var(--clr-bg-primary);--surface-overlay: var(--clr-bg-secondary);--border-subtle: rgba(255, 255, 255, .12);--border-default: rgba(255, 255, 255, .2);--border-strong: rgba(255, 255, 255, .32);--border-accent: var(--clr-accent);--clr-white-18: rgba(255, 255, 255, .18);--clr-black-20: rgba(0, 0, 0, .2);--clr-black-22: rgba(0, 0, 0, .22);--clr-black-25: rgba(0, 0, 0, .25);--clr-black-28: rgba(0, 0, 0, .28);--clr-black-40: rgba(0, 0, 0, .4);--clr-black-50: rgba(0, 0, 0, .5);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .25), 0 1px 2px rgba(0, 0, 0, .2);--shadow-md: 0 4px 6px rgba(0, 0, 0, .3), 0 2px 4px rgba(0, 0, 0, .22);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .4), 0 4px 6px rgba(0, 0, 0, .28);--shadow-xl: 0 20px 25px rgba(0, 0, 0, .5), 0 8px 10px rgba(0, 0, 0, .35);--shadow-glow-accent: 0 0 20px rgba(0, 212, 255, .3);--shadow-glow-purple: 0 0 20px rgba(123, 47, 247, .3);--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--clr-bg-primary-05: rgba(26, 26, 46, .05);--clr-bg-primary-10: rgba(26, 26, 46, .1);--clr-bg-primary-15: rgba(26, 26, 46, .15);--clr-bg-primary-20: rgba(26, 26, 46, .2);--clr-success-10: rgba(34, 197, 94, .1);--clr-success-20: rgba(34, 197, 94, .2);--clr-success-30: rgba(34, 197, 94, .3);--clr-success-50: rgba(34, 197, 94, .5);--clr-danger-10: rgba(239, 68, 68, .1);--clr-danger-20: rgba(239, 68, 68, .2);--clr-danger-30: rgba(239, 68, 68, .3);--clr-danger-50: rgba(239, 68, 68, .5);--clr-warning-10: rgba(245, 158, 11, .1);--clr-warning-15: rgba(245, 158, 11, .15);--clr-warning-40: rgba(245, 158, 11, .4);--clr-danger-12: rgba(239, 68, 68, .12);--clr-danger-15: rgba(239, 68, 68, .15);--clr-danger-25: rgba(239, 68, 68, .25);--clr-danger-40: rgba(239, 68, 68, .4);--clr-success-08: rgba(34, 197, 94, .08);--clr-success-15: rgba(34, 197, 94, .15);--clr-warning-20: rgba(245, 158, 11, .2);--clr-warning-30: rgba(245, 158, 11, .3);--clr-warning-50: rgba(245, 158, 11, .5);--clr-white-02: rgba(255, 255, 255, .02);--clr-white-03: rgba(255, 255, 255, .03);--clr-white-04: rgba(255, 255, 255, .04);--clr-white-05: rgba(255, 255, 255, .05);--clr-white-06: rgba(255, 255, 255, .06);--clr-white-07: rgba(255, 255, 255, .07);--clr-white-08: rgba(255, 255, 255, .08);--clr-white-10: rgba(255, 255, 255, .1);--clr-white-12: rgba(255, 255, 255, .12);--clr-white-15: rgba(255, 255, 255, .15);--clr-white-20: rgba(255, 255, 255, .2);--clr-white-30: rgba(255, 255, 255, .3);--clr-white-35: rgba(255, 255, 255, .35);--clr-white-40: rgba(255, 255, 255, .4);--clr-white-45: rgba(255, 255, 255, .45);--clr-white-50: rgba(255, 255, 255, .5);--clr-white-60: rgba(255, 255, 255, .6);--clr-white-65: rgba(255, 255, 255, .65);--clr-white-70: rgba(255, 255, 255, .7);--clr-white-75: rgba(255, 255, 255, .75);--clr-white-80: rgba(255, 255, 255, .8);--clr-white-82: rgba(255, 255, 255, .82);--clr-white-85: rgba(255, 255, 255, .85);--clr-white-90: rgba(255, 255, 255, .9);--clr-black-30: rgba(0, 0, 0, .3);--clr-black-35: rgba(0, 0, 0, .35);--clr-black-75: rgba(0, 0, 0, .75);--clr-purple-60: rgba(167, 139, 250, .6);--clr-purple-70: rgba(167, 139, 250, .7);--z-base: 0;--z-raised: 10;--z-dropdown: 100;--z-sticky: 200;--z-overlay: 300;--z-modal: 400;--z-toast: 500;--skeleton-base: rgba(255, 255, 255, .08);--skeleton-highlight: rgba(255, 255, 255, .18);--skeleton-anim: shimmer;--skeleton-speed: 1.4s}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}@media print{.learn-page{background:#fff!important;color:#000!important;padding:20px!important}.learn-page .header,.learn-page .nav-btn,.learn-page .cta-primary,.learn-page .cta-secondary,.learn-page .generation-progress,.learn-page footer,.learn-page .home-bg,.learn-page .dialog-section .send-dots{display:none!important}.learn-page .question-card,.learn-page .answer-btn{background:#fff!important;border:1px solid #000!important;color:#000!important;break-inside:avoid}.learn-page .question-card h3{color:#000!important}}[data-theme=light]{--clr-bg-primary: #f8fafc;--clr-bg-secondary: #e2e8f0;--clr-text-primary: #1a1a2e;--clr-text-secondary: rgba(26,26,46,.6);--clr-accent: #00d4ff;--clr-accent-secondary: #7b2ff7;--clr-accent-grad-start: #1e1b4b;--clr-accent-grad-end: #14b8a6;--clr-bg-body: #f0f4f8;--clr-glow: rgba(59, 130, 246, .12);--clr-vignette: rgba(0, 0, 0, .08);--clr-hex-stroke: rgba(30, 58, 138, .08);--clr-hex-fill: rgba(59, 130, 246, .02);--clr-hex-glow-stroke: rgba(14, 165, 233, .18);--clr-hex-glow-fill: rgba(14, 165, 233, .05);--clr-text-on-light: #1a1a2e;--surface-card: rgba(0, 0, 0, .04);--surface-card-border: rgba(0, 0, 0, .1);--surface-input-bg: rgba(0, 0, 0, .04);--surface-input-border: rgba(0, 0, 0, .15);--text-muted: rgba(26, 26, 46, .6);--text-40: rgba(26, 26, 46, .35);--text-50: rgba(26, 26, 46, .45);--text-55: rgba(26, 26, 46, .5);--text-60: rgba(26, 26, 46, .55);--text-65: rgba(26, 26, 46, .6);--text-75: rgba(26, 26, 46, .7);--text-80: rgba(26, 26, 46, .75);--text-85: rgba(26, 26, 46, .8);--text-90: rgba(26, 26, 46, .85);--surface-02: rgba(0, 0, 0, .02);--surface-03: rgba(0, 0, 0, .03);--surface-04: rgba(0, 0, 0, .04);--surface-05: rgba(0, 0, 0, .05);--surface-08: rgba(0, 0, 0, .08);--surface-10: rgba(0, 0, 0, .1);--clr-white-02: rgba(0, 0, 0, .02);--clr-white-03: rgba(0, 0, 0, .03);--clr-white-04: rgba(0, 0, 0, .04);--clr-white-05: rgba(0, 0, 0, .05);--clr-white-06: rgba(0, 0, 0, .06);--clr-white-07: rgba(0, 0, 0, .07);--clr-white-08: rgba(0, 0, 0, .08);--clr-white-10: rgba(0, 0, 0, .1);--clr-white-12: rgba(0, 0, 0, .12);--clr-white-15: rgba(0, 0, 0, .15);--clr-white-18: rgba(0, 0, 0, .18);--clr-white-20: rgba(0, 0, 0, .2);--clr-white-22: rgba(0, 0, 0, .22);--clr-white-30: rgba(26, 26, 46, .3);--clr-white-35: rgba(26, 26, 46, .35);--clr-white-40: rgba(26, 26, 46, .4);--clr-white-45: rgba(26, 26, 46, .45);--clr-white-50: rgba(26, 26, 46, .5);--clr-white-60: rgba(26, 26, 46, .6);--clr-white-65: rgba(26, 26, 46, .65);--clr-white-70: rgba(26, 26, 46, .7);--clr-white-75: rgba(26, 26, 46, .75);--clr-white-80: rgba(26, 26, 46, .8);--clr-white-82: rgba(26, 26, 46, .82);--clr-white-85: rgba(26, 26, 46, .85);--clr-white-90: rgba(26, 26, 46, .9)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--clr-accent);outline-offset:2px}[data-theme=light] .topic-card,[data-theme=light] .login-card,[data-theme=light] .question-card,[data-theme=light] .question-item,[data-theme=light] .admin-content,[data-theme=light] .suggestions-panel{background:#ffffffa6;border-color:var(--surface-card-border);color:var(--clr-text-primary)}[data-theme=light] .topic-card:hover,[data-theme=light] .topic-card.selected{background:#3b82f614;border-color:var(--clr-accent)}[data-theme=light] .level-btn,[data-theme=light] .answer-btn{background:#0000000a;border-color:var(--surface-input-border);color:var(--clr-text-primary)}[data-theme=light] .level-btn:hover,[data-theme=light] .level-btn.selected{background:#14b8a61f;border-color:var(--clr-accent-grad-end)}[data-theme=light] .admin-tab{background:#0000000a;border-color:var(--surface-input-border)}[data-theme=light] .admin-tab.active{background:var(--clr-accent-grad-end);color:var(--clr-text-primary)}[data-theme=light] .hiw-card,[data-theme=light] .ai-card{background:#ffffff80;border-color:#00000014}[data-theme=light] .language-select{background:var(--clr-bg-body);color:var(--clr-text-primary)}[data-theme=light] .hero-badge{background:#14b8a61a;border-color:#14b8a64d}[data-theme=light] .ai-card,[data-theme=light] .ai-chat-demo,[data-theme=light] .ai-msg-user,[data-theme=light] .ai-msg-bot{background:#fff9;color:var(--clr-text-primary)}[data-theme=light] .ai-card h2,[data-theme=light] .ai-card p,[data-theme=light] .ai-card .ai-badge{color:var(--clr-text-primary)}[data-theme=light] .hero-word-explain,[data-theme=light] .hero-word-if{color:var(--clr-text-primary)!important}[data-theme=light] .hstat-label{color:var(--text-65)}[data-theme=light] .domain-pill{background:#ffffffb3;border-color:var(--surface-card-border);color:var(--clr-text-primary)}[data-theme=light] .domain-pill-wrap{background:#00000005}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--clr-bg-body);min-height:100vh;color:var(--clr-text-primary);overflow-x:hidden;position:relative;transition:background .3s ease,color .3s ease}body:before{content:"";position:fixed;top:-300px;right:-200px;width:800px;height:800px;z-index:0;background:radial-gradient(circle,var(--clr-glow) 0%,transparent 70%);pointer-events:none}.vignette{position:fixed;inset:0;z-index:1;pointer-events:none;background:radial-gradient(ellipse at center,transparent 50%,var(--clr-vignette) 100%)}#root{min-height:100vh}.container{max-width:1800px;margin:0 auto;padding:20px;position:relative;z-index:2}.text-xs{font-size:var(--font-xs);line-height:var(--lh-normal)}.text-sm{font-size:var(--font-sm);line-height:var(--lh-normal)}.text-base{font-size:var(--font-base);line-height:var(--lh-normal)}.text-md{font-size:var(--font-md);line-height:var(--lh-normal)}.text-lg{font-size:var(--font-lg);line-height:var(--lh-relaxed)}.text-xl{font-size:var(--font-xl);line-height:var(--lh-snug)}.text-2xl{font-size:var(--font-2xl);line-height:var(--lh-snug)}.text-3xl{font-size:var(--font-3xl);line-height:var(--lh-tight)}.text-4xl{font-size:var(--font-4xl);line-height:var(--lh-tight)}.text-5xl{font-size:var(--font-5xl);line-height:var(--lh-none)}.text-6xl{font-size:var(--font-6xl);line-height:var(--lh-none)}.text-7xl{font-size:var(--font-7xl);line-height:var(--lh-none)}.text-primary{color:var(--clr-text-primary)}.text-secondary{color:var(--clr-text-secondary)}.text-accent{color:var(--clr-accent)}.text-danger{color:var(--clr-danger)}.text-success{color:var(--clr-success)}.text-warning{color:var(--clr-warning)}.font-thin{font-weight:var(--fw-thin)}.font-extralight{font-weight:var(--fw-extralight)}.font-light{font-weight:var(--fw-light)}.font-normal{font-weight:var(--fw-regular)}.font-medium{font-weight:var(--fw-medium)}.font-semibold{font-weight:var(--fw-semibold)}.font-bold{font-weight:var(--fw-bold)}.font-extrabold{font-weight:var(--fw-extrabold)}.font-black{font-weight:var(--fw-black)}.tracking-tightest{letter-spacing:var(--ls-tightest)}.tracking-tighter{letter-spacing:var(--ls-tighter)}.tracking-tight{letter-spacing:var(--ls-tight)}.tracking-normal{letter-spacing:var(--ls-normal)}.tracking-wide{letter-spacing:var(--ls-wide)}.tracking-wider{letter-spacing:var(--ls-wider)}.tracking-widest{letter-spacing:var(--ls-widest)}.tracking-label{letter-spacing:var(--ls-label)}.leading-none{line-height:var(--lh-none)}.leading-tight{line-height:var(--lh-tight)}.leading-snug{line-height:var(--lh-snug)}.leading-normal{line-height:var(--lh-normal)}.leading-relaxed{line-height:var(--lh-relaxed)}.leading-loose{line-height:var(--lh-loose)}h1,.h1{font-size:var(--font-4xl);font-weight:var(--fw-extrabold);line-height:var(--lh-tight);letter-spacing:var(--ls-tighter)}h2,.h2{font-size:var(--font-3xl);font-weight:var(--fw-bold);line-height:var(--lh-snug);letter-spacing:var(--ls-tight)}h3,.h3{font-size:var(--font-2xl);font-weight:var(--fw-semibold);line-height:var(--lh-snug);letter-spacing:var(--ls-tight)}h4,.h4{font-size:var(--font-xl);font-weight:var(--fw-semibold);line-height:var(--lh-normal);letter-spacing:var(--ls-normal)}h5,.h5{font-size:var(--font-lg);font-weight:var(--fw-medium);line-height:var(--lh-relaxed);letter-spacing:var(--ls-normal)}h6,.h6{font-size:var(--font-base);font-weight:var(--fw-medium);line-height:var(--lh-relaxed);letter-spacing:var(--ls-normal)}.label{font-size:var(--font-xs);font-weight:var(--fw-semibold);letter-spacing:var(--ls-label);text-transform:uppercase}.prose{font-size:var(--font-base);line-height:var(--lh-relaxed);color:var(--clr-text-secondary)}.caption{font-size:var(--font-xs);color:var(--clr-text-secondary)}.header{display:flex;justify-content:space-between;align-items:center;padding:20px 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