:root{--visual-bg-app:#f4f7fc;--visual-bg-atmosphere:#edf4fa;--visual-surface:#fff;--visual-surface-elevated:#fff;--visual-surface-inset:#edf4fa;--visual-surface-floating:#f8fafcf7;--visual-surface-navigation:#f8fafcf5;--visual-surface-input:#fff;--visual-border-subtle:#d2dce9;--visual-text-primary:#102642;--visual-text-secondary:#435a74;--visual-text-muted:#5d7087;--visual-text-inverse:#fff;--visual-brand:#08b879;--visual-brand-hover:#00b96c;--visual-brand-pressed:#009f5d;--visual-brand-soft:#d8f8e9;--visual-focus:#1677e8;--visual-success:#08a862;--visual-error:#e9475c;--visual-warning:#e99a15;--visual-info:#168ddd;--visual-accent-lessons:#8757e9;--visual-accent-words:#12b879;--visual-accent-sentences:#f08b27;--visual-accent-grammar:#e46475;--visual-accent-ai:#328ee5;--visual-accent-progress:#14af89;--visual-accent-social:#8c62db;--visual-accent-rewards:#e9a312;--visual-accent-cultural:#31a9c9;--visual-accent-polish:#dc304a;--visual-radius-page:1.75rem;--visual-radius-hero:1.6rem;--visual-radius-card:1.25rem;--visual-radius-compact:.95rem;--visual-radius-button:.9rem;--visual-radius-input:.9rem;--visual-radius-dialog:1.65rem;--visual-shadow-surface:0 1px 3px #1837520f;--visual-shadow-card:0 10px 28px #23526f17,0 1px 3px #23526f14;--visual-shadow-elevated:0 18px 45px #1e4c6924,0 2px 6px #1e4c6914;--visual-shadow-floating:0 -8px 32px #1b435c24;--visual-focus-glow:0 0 0 4px color-mix(in srgb,var(--visual-focus) 22%,transparent);--visual-space-1:.25rem;--visual-space-2:.5rem;--visual-space-3:.75rem;--visual-space-4:1rem;--visual-space-5:1.25rem;--visual-space-6:1.5rem;--visual-space-8:2rem;--visual-motion-fast:.14s;--visual-motion-base:.22s;--visual-ease:cubic-bezier(.2,.8,.2,1);--visual-page-gutter:clamp(1rem,4vw,1.5rem)}:root[data-theme=dark]{--visual-bg-app:#08152f;--visual-bg-atmosphere:#0c1b3b;--visual-surface:#101f42;--visual-surface-elevated:#15284c;--visual-surface-inset:#162747;--visual-surface-floating:#101d35f0;--visual-surface-navigation:#101d35eb;--visual-surface-input:#162747;--visual-border-subtle:#344a70;--visual-text-primary:#f4f7ff;--visual-text-secondary:#b9c7df;--visual-text-muted:#91a5c5;--visual-text-inverse:#07142c;--visual-brand:#35e69a;--visual-brand-hover:#55efa9;--visual-brand-pressed:#1cca82;--visual-brand-soft:#143b38;--visual-focus:#72b7ff;--visual-success:#4aeaa0;--visual-error:#ff7484;--visual-warning:#ffc45b;--visual-info:#65c5ff;--visual-shadow-surface:0 1px 3px #0000003d;--visual-shadow-card:0 12px 34px #00000047,0 1px 0 #ffffff09 inset;--visual-shadow-elevated:0 22px 54px #0000006b,0 0 24px color-mix(in srgb,var(--visual-brand) 5%,transparent);--visual-shadow-floating:0 -10px 38px #0006}@media (prefers-color-scheme:dark){:root[data-theme=system]{--visual-bg-app:#08152f;--visual-bg-atmosphere:#0c1b3b;--visual-surface:#101f42;--visual-surface-elevated:#15284c;--visual-surface-inset:#162747;--visual-surface-floating:#101d35f0;--visual-surface-navigation:#101d35eb;--visual-surface-input:#162747;--visual-border-subtle:#344a70;--visual-text-primary:#f4f7ff;--visual-text-secondary:#b9c7df;--visual-text-muted:#91a5c5;--visual-text-inverse:#07142c;--visual-brand:#35e69a;--visual-brand-hover:#55efa9;--visual-brand-pressed:#1cca82;--visual-brand-soft:#143b38;--visual-focus:#72b7ff;--visual-success:#4aeaa0;--visual-error:#ff7484;--visual-warning:#ffc45b;--visual-info:#65c5ff;--visual-shadow-surface:0 1px 3px #0000003d;--visual-shadow-card:0 12px 34px #00000047,0 1px 0 #ffffff09 inset;--visual-shadow-elevated:0 22px 54px #0000006b;--visual-shadow-floating:0 -10px 38px #0006}}.home-rebuild{--home-world-fallback-light:linear-gradient(180deg,#bcecff 0%,#dff5e6 58%,#f7fcfb 100%);--home-world-fallback-dark:linear-gradient(180deg,#071b4a 0%,#152a64 55%,#08152f 100%);--home-world-image:var(--home-world-light);--home-glass:#ffffffd6;--home-glass-border:#ffffffbd;--home-ink:#0b2042;isolation:isolate;gap:.72rem;width:100%;max-width:42rem;padding:.25rem;position:relative}.home-world-backdrop{z-index:-2;pointer-events:none;background-image:linear-gradient(180deg,transparent 0 43%,#f4fbfd47 58%,#f4fbfde6 92%),var(--home-world-image);background-position:top;background-repeat:no-repeat;background-size:cover;position:fixed;inset:0}.home-rebuild-hero{isolation:auto;background:0 0;align-content:start;gap:.65rem;min-height:18.2rem;margin:0;padding:.45rem .45rem 0;display:grid;overflow:visible}.home-rebuild-hero:before,.home-rebuild-hero:after,.home-rebuild .visual-home-scenery{display:none}.home-rebuild-topbar{justify-content:space-between;align-items:center;gap:.75rem;min-height:3rem;display:flex}.home-language-indicator{border:1px solid var(--home-glass-border);background:var(--home-glass);min-height:2.55rem;color:var(--home-ink);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:1rem;align-items:center;gap:.48rem;padding:.35rem .65rem;font-size:.82rem;text-decoration:none;display:inline-flex;box-shadow:0 7px 18px #1237521f}.home-language-indicator:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.home-language-indicator>span:last-child{font-size:1.25rem;line-height:1}.home-rebuild .homepage-greeting{background:0 0;border-radius:0;align-items:end;min-height:8.9rem;padding:.65rem .35rem 1rem;display:flex}.home-rebuild-primary-action:active{transform:translateY(3px);box-shadow:0 2px #07884b,0 6px 14px #025b302e}.home-rebuild .visual-today-kicker .today-habit-streak{color:#704400;background:#fff0bd;padding:.25rem .55rem;font-size:.72rem}.home-rebuild>.visual-today-card>.visual-today-content>h2{margin:.05rem 0 0;font-size:1.08rem}.home-rebuild>.visual-today-card .today-habit-progress{margin-top:.38rem!important}.home-rebuild .visual-home-secondary .quick-action-icon{background:#ffffff8c;border-radius:.72rem;width:2.25rem;height:2.25rem}.home-rebuild .visual-home-secondary .dashboard-arrow{color:var(--home-ink);font-size:1.35rem;display:block}.home-rebuild .home-more-link{color:var(--home-ink);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#ffffff75;border-radius:.8rem}:root[data-theme=dark] .home-world-backdrop{background-image:linear-gradient(180deg,transparent 0 42%,#0511323d 58%,#040e2be6 94%),var(--home-world-image)}:root[data-theme=dark] .home-rebuild .homepage-greeting p{color:#e5efffdb}:root[data-theme=dark] .home-rebuild .visual-home-secondary .quick-action-row{color:#f6fbff;background:#033d48bf;border-color:#23edb647}:root[data-theme=dark] .home-rebuild .visual-home-secondary .quick-action-row[data-tone=coach]{background:#26175ec2;border-color:#9c65ff7a}:root[data-theme=dark] .home-rebuild .visual-home-secondary .quick-action-icon{background:#020e3161}@media (prefers-color-scheme:dark){:root[data-theme=system] .home-rebuild{--home-world-image:var(--home-world-dark);--home-glass:#08204bc2;--home-glass-border:#74beff52;--home-ink:#f5f8ff}:root[data-theme=system] .home-world-backdrop{background-image:linear-gradient(180deg,transparent 0 42%,#0511323d 58%,#040e2be6 94%),var(--home-world-image)}:root[data-theme=system] .home-rebuild .visual-home-hero-copy{text-shadow:0 1px 2px #0000008c;background:linear-gradient(90deg,#05183fbf,#05183f47 82%,#0000)}:root[data-theme=system] .home-rebuild .homepage-greeting p{color:#e5efffdb}:root[data-theme=system] .home-rebuild .visual-home-secondary .quick-action-row{color:#f6fbff;background:#033d48bf;border-color:#23edb647}:root[data-theme=system] .home-rebuild .visual-home-secondary .quick-action-row[data-tone=coach]{background:#26175ec2;border-color:#9c65ff7a}}@media (max-width:720px){html[data-home-active],html[data-home-active] body{background:#e9f7fb!important}.app-frame:has(.home-rebuild){background:#e9f7fb!important}.app-frame:has(.home-rebuild) .app-content{background:#e9f7fb!important}.app-frame:has(.home-rebuild) .home-page{background:0 0!important}.app-frame:has(.home-rebuild) .app-page-container{max-width:none}.home-rebuild{min-height:calc(100dvh - 3.85rem - env(safe-area-inset-top) - env(safe-area-inset-bottom));align-content:start;padding:.2rem .15rem .65rem}.home-rebuild .home-more-desktop{display:none}.app-frame:has(.home-rebuild) .mobile-bottom-nav{border:1px solid var(--home-glass-border);background:var(--home-glass);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:0;box-shadow:0 -7px 24px #051c3a26}}@media (min-width:721px){.home-rebuild .visual-home-mascot{display:none}}@media (max-width:380px),(max-height:700px){.home-rebuild{gap:.5rem}.home-rebuild-hero{gap:.48rem;min-height:15.8rem;padding-top:.2rem}.home-rebuild .homepage-greeting{min-height:6.9rem;padding-bottom:.45rem}.home-rebuild-primary-action{min-height:3rem}.home-rebuild>.visual-today-card{padding:.58rem .72rem}.home-rebuild .visual-home-secondary .quick-action-row{min-height:3.65rem}.home-rebuild .home-more-link{min-height:2.35rem}}:root{--bg:var(--visual-bg-app);--bg-accent:var(--visual-bg-atmosphere);--surface:var(--visual-surface);--surface-elevated:var(--visual-surface-elevated);--surface-subtle:var(--visual-surface-inset);--border:var(--visual-border-subtle);--text:var(--visual-text-primary);--text-muted:var(--visual-text-secondary);--primary:var(--visual-brand);--primary-strong:var(--visual-brand-hover);--focus:var(--visual-focus);--success:var(--visual-success);--error:var(--visual-error);--warning:var(--visual-warning);--info:var(--visual-info);--shadow-card:var(--visual-shadow-card);--shadow-float:var(--visual-shadow-elevated);--radius-sm:var(--visual-radius-compact);--radius-md:var(--visual-radius-card);--radius-lg:var(--visual-radius-hero);--primary-action:var(--visual-brand);--primary-action-hover:var(--visual-brand-hover);--accent-lessons:var(--visual-accent-lessons);--accent-words:var(--visual-accent-words);--accent-practice:var(--visual-accent-grammar);--accent-result:var(--visual-accent-progress);--accent-coach:var(--visual-accent-ai)}.app-frame{isolation:isolate;background:var(--visual-bg-app);position:relative;overflow-x:clip}.app-header,.app-sidebar,.app-content,.mobile-bottom-nav{z-index:1;position:relative}.app-header,.app-sidebar,.mobile-bottom-nav{position:fixed}.target-language-atmosphere{z-index:0;pointer-events:none;background:radial-gradient(circle at 12% 5%,color-mix(in srgb,var(--visual-bg-atmosphere) 82%,transparent),transparent 34%),linear-gradient(180deg,color-mix(in srgb,var(--visual-bg-app) 78%,var(--visual-bg-atmosphere)),var(--visual-bg-app) 42%);position:fixed;inset:0;overflow:hidden}.target-language-atmosphere span{filter:blur(1px);opacity:.34;border-radius:999px;position:absolute}.target-language-atmosphere span:first-child{background:color-mix(in srgb,var(--visual-brand) 18%,transparent);width:22rem;height:22rem;top:8rem;right:-12rem}.target-language-atmosphere span:nth-child(2){background:color-mix(in srgb,var(--visual-accent-cultural) 14%,transparent);width:16rem;height:16rem;top:42%;left:-10rem}.target-language-atmosphere span:nth-child(3){background:color-mix(in srgb,var(--visual-brand) 10%,transparent);width:20rem;height:8rem;bottom:-5rem;right:8%}.target-language-atmosphere[data-atmosphere=polish] span:nth-child(2){background:color-mix(in srgb,var(--visual-accent-polish) 8%,transparent)}.learner-page{min-height:calc(100dvh - 5.25rem);padding:clamp(1.25rem,3vw,2rem) var(--visual-page-gutter) calc(2rem + env(safe-area-inset-bottom));color:var(--visual-text-primary);position:relative}.learner-page-rich{padding-top:clamp(.75rem,2vw,1.25rem)}.learner-page-reading>.app-page-container{max-width:48rem}.learner-page-immersive{min-height:100dvh;padding-top:max(1rem,env(safe-area-inset-top))}.visual-card{border:1px solid color-mix(in srgb,var(--border) 74%,transparent);border-radius:var(--visual-radius-card);background:var(--visual-surface);padding:var(--visual-space-5);box-shadow:var(--visual-shadow-card);color:var(--visual-text-primary)}.visual-card-interactive{transition:transform var(--visual-motion-fast) var(--visual-ease),box-shadow var(--visual-motion-base) var(--visual-ease),border-color var(--visual-motion-base) ease}.visual-card-interactive:hover{border-color:color-mix(in srgb,var(--visual-brand) 28%,var(--border));box-shadow:var(--visual-shadow-elevated);transform:translateY(-2px)}.visual-card-interactive:active{transform:translateY(1px)}.visual-card-feature,.visual-card-highlighted{background:linear-gradient(135deg,var(--visual-surface),color-mix(in srgb,var(--card-accent,var(--visual-brand)) 9%,var(--visual-surface)))}.visual-card-stat{padding:var(--visual-space-4)}.visual-card-reward{--card-accent:var(--visual-accent-rewards)}.visual-card[data-tone=lessons]{--card-accent:var(--visual-accent-lessons)}.visual-card[data-tone=words]{--card-accent:var(--visual-accent-words)}.visual-card[data-tone=sentences]{--card-accent:var(--visual-accent-sentences)}.visual-card[data-tone=grammar]{--card-accent:var(--visual-accent-grammar)}.visual-card[data-tone=ai]{--card-accent:var(--visual-accent-ai)}.visual-card[data-tone=progress]{--card-accent:var(--visual-accent-progress)}.visual-card[data-tone=social]{--card-accent:var(--visual-accent-social)}.visual-card[data-tone=rewards]{--card-accent:var(--visual-accent-rewards)}.button-primary,.button-secondary,.button-premium,.button-info,.button-danger,.button-ghost,.button-practice{border-radius:var(--visual-radius-button);min-height:2.875rem;transition:transform var(--visual-motion-fast) var(--visual-ease),box-shadow var(--visual-motion-fast) ease,background-color var(--visual-motion-base) ease,border-color var(--visual-motion-base) ease}.button-primary{border-color:color-mix(in srgb,var(--visual-brand) 72%,#006b43);background:linear-gradient(180deg,color-mix(in srgb,var(--visual-brand) 88%,#fff),var(--visual-brand));box-shadow:0 4px 0 color-mix(in srgb,var(--visual-brand-pressed) 72%,transparent),0 9px 22px color-mix(in srgb,var(--visual-brand) 18%,transparent)}.button-primary:hover{background:linear-gradient(180deg,var(--visual-brand-hover),color-mix(in srgb,var(--visual-brand-hover) 84%,#008854))}.button-primary:active{background:var(--visual-brand-pressed)}.button-secondary{background:var(--visual-surface);color:var(--visual-text-primary);box-shadow:var(--visual-shadow-surface)}.button-ghost{box-shadow:none}.button-premium{border-color:color-mix(in srgb,var(--premium) 35%,var(--border));background:linear-gradient(135deg,var(--premium-soft),var(--visual-surface));box-shadow:0 3px 0 color-mix(in srgb,var(--premium) 16%,transparent)}:is(.button-primary,.button-secondary,.button-premium,.button-info,.button-danger,.button-ghost,.button-practice):focus-visible{outline:3px solid var(--visual-focus);outline-offset:3px;box-shadow:var(--visual-focus-glow)}:is(input,textarea,select,.activity-comment-input){border-radius:var(--visual-radius-input);border-color:color-mix(in srgb,var(--border) 82%,var(--visual-text-muted));background:var(--visual-surface-elevated);color:var(--visual-text-primary);transition:border-color var(--visual-motion-base) ease,box-shadow var(--visual-motion-base) ease;box-shadow:inset 0 1px 2px #1432460a}:is(input,textarea,select,.activity-comment-input):focus{border-color:var(--visual-focus);box-shadow:var(--visual-focus-glow)}.visual-progress{background:color-mix(in srgb,var(--visual-text-muted) 16%,var(--visual-surface-inset));border-radius:999px;height:.625rem;overflow:hidden;box-shadow:inset 0 1px 2px #0e2a3b1a}.visual-progress>span{border-radius:inherit;background:linear-gradient(90deg,var(--visual-brand),color-mix(in srgb,var(--visual-brand) 72%,#7dffd1));height:100%;transition:width var(--visual-motion-base) var(--visual-ease);display:block}.visual-progress[data-tone=warning]>span{background:linear-gradient(90deg,var(--visual-warning),#ffd66c)}.visual-progress[data-tone=progress]>span{background:linear-gradient(90deg,var(--visual-accent-progress),var(--visual-info))}.visual-progress[data-tone=success]>span{background:linear-gradient(90deg,var(--visual-success),var(--visual-brand))}.today-habit-progress-track,.achievement-progress{background:color-mix(in srgb,var(--visual-text-muted) 15%,var(--visual-surface-inset));border:0;box-shadow:inset 0 1px 2px #0e2a3b14}.plan-badge{box-shadow:0 2px 8px color-mix(in srgb,currentColor 13%,transparent);letter-spacing:.01em;border:0}.plan-badge-plus{color:#8a5700;background:linear-gradient(135deg,#fff3c9,#ffe6a0)}.plan-badge-pro{background:linear-gradient(135deg,color-mix(in srgb,var(--premium) 15%,var(--visual-surface)),color-mix(in srgb,var(--visual-accent-ai) 13%,var(--visual-surface)));color:var(--premium)}.upgrade-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0412188c}.upgrade-dialog{border:1px solid color-mix(in srgb,var(--premium) 24%,var(--border));border-radius:var(--visual-radius-dialog);background:linear-gradient(155deg,var(--visual-surface-elevated),color-mix(in srgb,var(--premium) 7%,var(--visual-surface)));box-shadow:var(--visual-shadow-elevated)}.upgrade-spark{background:linear-gradient(145deg,color-mix(in srgb,var(--premium) 18%,var(--visual-surface)),color-mix(in srgb,var(--visual-accent-rewards) 12%,var(--visual-surface)));box-shadow:0 10px 24px color-mix(in srgb,var(--premium) 14%,transparent)}@media (max-width:720px){.learner-page{min-height:calc(100dvh - 4.75rem);padding:max(1rem,var(--visual-space-4)) var(--visual-page-gutter) calc(1.5rem + env(safe-area-inset-bottom))}.mobile-bottom-nav{inset:auto max(.65rem,env(safe-area-inset-right)) max(.55rem,env(safe-area-inset-bottom)) max(.65rem,env(safe-area-inset-left));border:1px solid color-mix(in srgb,var(--border) 75%,transparent);background:var(--visual-surface-floating);min-height:4.4rem;box-shadow:var(--visual-shadow-floating);-webkit-backdrop-filter:blur(18px);border-radius:1.2rem;padding:.32rem}.app-content{padding-bottom:calc(5.65rem + env(safe-area-inset-bottom));scroll-padding-bottom:calc(5.65rem + env(safe-area-inset-bottom))}.mobile-bottom-link{min-height:3.6rem;transition:background-color var(--visual-motion-fast) ease,transform var(--visual-motion-fast) var(--visual-ease),color var(--visual-motion-fast) ease;border-radius:.9rem;gap:.2rem}.mobile-bottom-link .outline-icon{stroke-width:2px;width:1.35rem;height:1.35rem}.mobile-bottom-link-active{background:color-mix(in srgb,currentColor 10%,var(--visual-surface));box-shadow:inset 0 0 0 1px color-mix(in srgb,currentColor 20%,transparent)}.mobile-bottom-link:active{transform:scale(.96)}.network-status{bottom:calc(5.75rem + env(safe-area-inset-bottom))}.upgrade-dialog{border-radius:var(--visual-radius-dialog) var(--visual-radius-dialog) 1.1rem 1.1rem;padding:1.35rem}}@media (display-mode:standalone) and (max-width:720px){html[data-practice-immersive=true] .learner-page-immersive{padding-top:env(safe-area-inset-top)}}@media (min-width:721px) and (max-width:1100px){.app-header{position:relative}.app-sidebar{display:none}.app-content{padding-top:0;padding-left:0}}@media (min-width:721px){.learner-page{padding-inline:clamp(1.5rem,3vw,3rem)}.mobile-bottom-nav{display:none}}@media (prefers-reduced-motion:reduce){.visual-card-interactive,.visual-progress>span,.mobile-bottom-link{transition:none!important}.visual-card-interactive:hover{transform:none}}.visual-home{gap:var(--visual-space-5)}.visual-home-brand{z-index:1;position:relative}.visual-home-hero{isolation:isolate;border:1px solid color-mix(in srgb,var(--visual-brand) 16%,var(--border));border-radius:var(--visual-radius-hero);background:radial-gradient(circle at 82% 20%,color-mix(in srgb,var(--visual-accent-cultural) 24%,transparent) 0 18%,transparent 45%),linear-gradient(135deg,color-mix(in srgb,var(--visual-brand-soft) 74%,var(--visual-surface)) 0%,var(--visual-surface-elevated) 68%);min-height:10.5rem;box-shadow:var(--visual-shadow-card);padding:clamp(1.25rem,5vw,2rem);position:relative;overflow:hidden}.visual-home-hero:after{z-index:-1;background:color-mix(in srgb,var(--visual-brand) 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