:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;color:#f3f3f1;--bg:#090909;--panel:#111;--panel-soft:#171717;--text:#f3f3f1;--text-body:#dcd8ce;--muted:#aaa79d;--subtle:#8f8b82;--link:#8db6ff;--link-hover:#b7d0ff;--line:#ffffff17;--accent:#ff4f35;--accent-2:#ff8a35;--accent-3:#f5c85f;--reader-accent:var(--accent-2,#ff8a35);--reader-accent-hover:#ff8a3561;--reader-accent-soft:#ff8a352e;--reader-accent-line:#ff8a358f;--site-header-height:58px;--site-header-content-offset:78px;--site-header-overlay-offset:68px;--site-header-reader-offset:72px;--review-count-new:#69aaf9;--review-count-learning:#ff6b6b;--review-count-due:#6bcf9e;--danger-action:#a73232;--danger-action-hover:#922b2b;--success-action:#1f7a4c;--success-action-hover:#19643e;--on-color:#fff;--danger-text:#ffb2a5;--success-text:#d8f5e9;--success:#6bcf9e;--radius:8px;--lesson-section-title-size:clamp(1.5rem, 2.6vw, 2.4rem);--lesson-section-gap:clamp(98px, calc(8vw + 34px), 142px);--admin-surface:#111;--admin-surface-active:#1b1b1b;--admin-surface-hover:#171717;--admin-field:#171717;--admin-control:#202020;--admin-primary:#ff8a35;--admin-on-primary:#090909;--admin-danger:#ff6b6b;--admin-danger-soft:transparent;--admin-focus:var(--accent-2);--admin-radius:var(--radius);--admin-line:#ffffff1a;--admin-line-strong:#ffffff38;--admin-scrollbar:#555;--admin-type-page:2rem;--admin-type-title:1.25rem;--admin-type-body:.9375rem;--admin-type-meta:.8125rem;--admin-space-1:6px;--admin-space-2:10px;--admin-space-3:16px;--admin-space-4:24px;background:#090909;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}@media (width<=620px){:root{--lesson-section-gap:88px}}@media (width<=900px){:root{--site-header-content-offset:68px}}@media (width<=760px){:root{--site-header-height:54px;--site-header-content-offset:72px;--site-header-overlay-offset:64px;--site-header-reader-offset:64px}}*{box-sizing:border-box}html{background:var(--bg);max-width:100%;overflow-x:clip}body{background:var(--bg);max-width:100%;color:var(--text);margin:0;overflow-x:clip}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}textarea{resize:vertical;overflow-y:hidden}button{color:inherit}#content{min-width:0;min-height:100vh;padding:var(--site-header-content-offset) clamp(16px, 3vw, 42px) 64px}html.aie-mobile-player-open,html.aie-mobile-player-open body{overscroll-behavior:none;overflow:hidden}.catalog-screen{max-width:1840px;margin:0 auto}.catalog-copy{min-width:0}.eyebrow{color:var(--accent-2);letter-spacing:0;text-transform:uppercase;margin:0 0 10px;font-size:.78rem;font-weight:700}h1,h2,h3,p{margin-top:0}h1{letter-spacing:0;max-width:760px;margin-bottom:12px;font-size:clamp(2.2rem,5vw,5.2rem);line-height:.95}.catalog-copy h1{margin:0;font-size:clamp(1.9rem,3vw,3rem);line-height:1}.filter-strip{scrollbar-width:none;gap:8px;margin:0 0 22px;padding-bottom:4px;display:flex;overflow-x:auto}.filter-strip::-webkit-scrollbar{display:none}.catalog-search{align-items:center;gap:8px;display:flex}.catalog-search label{flex:1;min-width:0}.catalog-search input{width:100%;min-height:44px;color:var(--text);background:#ffffff14;border:0;border-radius:999px;outline:none;padding:0 16px}.catalog-search input::placeholder{color:var(--subtle)}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.filter-chip{color:#e9e7e1;white-space:nowrap;background:#ffffff14;border-radius:999px;justify-content:center;align-items:center;min-height:34px;padding:0 15px;font-size:.86rem;display:inline-flex}.filter-chip.active{color:#141414;background:#f3f3f1}.clear-chip{min-height:44px}.lesson-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(18px,2vw,30px);display:grid}.empty-catalog{border-radius:var(--radius);background:#ffffff0b;align-content:center;min-height:220px;padding:28px;display:grid}.empty-catalog h2,.empty-catalog p{margin:0}.empty-catalog p{color:var(--muted);margin-top:6px}.surface{border-radius:var(--radius);background:#ffffff0b}.page-band{max-width:1360px;margin:0 auto}.icon-button{cursor:pointer;background:#ffffff14;border:0;border-radius:999px;place-items:center;width:42px;height:42px;display:inline-grid}.primary-action,.secondary-action{cursor:pointer;border:0;border-radius:999px;justify-content:center;align-items:center;gap:8px;min-height:42px;padding:0 18px;font-weight:700;display:inline-flex}.primary-action{background:var(--text);color:#101010}.secondary-action{color:var(--text);background:#ffffff17}.muted{color:var(--muted)}@media (width<=1320px){.lesson-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (width<=900px){.lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=620px){#content{padding-inline:14px}h1{font-size:2.45rem}.catalog-copy h1{font-size:2rem}.lesson-grid{grid-template-columns:1fr}.catalog-search{align-items:stretch}}@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}.explanation-sidebar.svelte-nt0k8r{color:#f3f3f1;background:#141412fc;border:0;min-width:0}header.svelte-nt0k8r{border-bottom:1px solid #ffffff17;justify-content:space-between;align-items:flex-start;gap:18px;padding:18px;display:flex}header.svelte-nt0k8r span:where(.svelte-nt0k8r),header.svelte-nt0k8r h2:where(.svelte-nt0k8r),header.svelte-nt0k8r strong:where(.svelte-nt0k8r){display:block}header.svelte-nt0k8r div:where(.svelte-nt0k8r)>span:where(.svelte-nt0k8r){color:var(--reader-accent);text-transform:uppercase;font-size:.7rem;font-weight:900}h2.svelte-nt0k8r{letter-spacing:0;margin:3px 0 2px;font-size:1.2rem}header.svelte-nt0k8r strong:where(.svelte-nt0k8r){color:var(--reader-accent);font-size:.98rem}.explanation-content.svelte-nt0k8r{gap:18px;padding:20px;display:grid}section.svelte-nt0k8r{gap:7px;display:grid}h3.svelte-nt0k8r,p.svelte-nt0k8r{margin:0}h3.svelte-nt0k8r{text-transform:uppercase;font-size:.76rem}p.svelte-nt0k8r{color:#cfcabf;line-height:1.6}.pronunciation.svelte-nt0k8r{color:var(--reader-accent);font-weight:800}.example.svelte-nt0k8r{border-left:2px solid var(--reader-accent-line);color:#e5dfd2;padding-left:10px}.loading.svelte-nt0k8r,.muted.svelte-nt0k8r{color:#9d978b}@media (width>=1100px){.explanation-sidebar.desktop-visible.svelte-nt0k8r{top:var(--site-header-overlay-offset);width:clamp(320px,25vw,400px);max-height:calc(100vh - var(--site-header-overlay-offset) - 14px);border-radius:8px;position:sticky;overflow-y:auto}.explanation-sidebar.svelte-nt0k8r:not(.desktop-visible){display:none}}@media (width<=1099px){.explanation-sidebar.mobile-visible.svelte-nt0k8r{z-index:105;inset:var(--site-header-height) 0 0;border-width:1px 0 0;position:fixed;overflow-y:auto}.explanation-sidebar.svelte-nt0k8r:not(.mobile-visible){display:none}}.aie-translate-word-hover{cursor:pointer!important}.global-reader-token{z-index:130;vertical-align:bottom;grid-template-rows:auto auto;justify-items:center;display:inline-grid;position:relative}.global-reader-word{background:var(--reader-accent);color:#fff4ec;cursor:pointer;border-radius:0;grid-row:2;padding:0 2px;position:relative;overflow:visible}.global-reader-word:before{background:var(--reader-accent);clip-path:polygon(50% 0,0 100%,100% 100%);content:"";width:10px;height:6px;position:absolute;top:-5px;left:50%;transform:translate(-50%)}.global-reader-token.dismissed .global-reader-word{color:inherit;opacity:1;background:0 0;padding-inline:0}.global-reader-token.dismissed .global-reader-word:before{content:none}.global-reader-hover{z-index:118;pointer-events:none;background:#ff8a3561;border-radius:0;position:fixed}.global-reader-open-link{z-index:140;color:#f3f3f1;white-space:nowrap;background:#242424;border:1px solid #fff3;border-radius:999px;align-items:center;gap:4px;padding:4px 7px;font-size:.72rem;font-weight:650;line-height:1;text-decoration:none;display:inline-flex;position:fixed;transform:translateY(-50%);box-shadow:0 6px 18px #00000047}.global-reader-open-link:hover,.global-reader-open-link:focus-visible{color:#fff;background:#303030;border-color:#fff6}.global-reader-overhead{z-index:132;width:max-content;max-width:min(220px,100vw - 32px);color:var(--reader-accent);font:inherit;text-align:center;cursor:pointer;background:0 0;border:0;grid-row:1;justify-items:center;gap:2px;margin-bottom:12px;padding:0 2px;display:grid;position:relative}.global-reader-overhead[hidden]{display:none}.global-reader-overhead:before{content:none}.global-reader-overhead strong,.global-reader-overhead span{overflow-wrap:anywhere;max-width:100%}.global-reader-overhead strong{color:var(--reader-accent);font-size:.88rem;font-weight:600;line-height:1.1}.global-reader-overhead .gloss-loading{color:#f3f3f1;letter-spacing:.08em;font-size:1rem;font-weight:900}.global-reader-overhead.dismissing{opacity:0;text-decoration:line-through;-webkit-text-decoration-color:var(--reader-accent);text-decoration-color:var(--reader-accent);text-decoration-thickness:2px;transition:opacity .32s,transform .32s;transform:translateY(-5px)}.reward-layer.svelte-jhf07p{z-index:100;pointer-events:none;position:fixed;inset:0}.reward-feedback.svelte-jhf07p{left:var(--reward-x);top:var(--reward-y);color:#fff;filter:drop-shadow(0 8px 20px #0000006b);align-items:center;gap:8px;animation:1s cubic-bezier(.16,1,.3,1) forwards svelte-jhf07p-reward-rise;display:flex;position:absolute;transform:translate(-50%,-50%)}.reward-check.svelte-jhf07p{border:2px solid var(--success);background:var(--success);border-radius:999px;place-items:center;width:38px;height:38px;display:inline-grid;box-shadow:0 0 0 7px #43be6e29}.reward-feedback.svelte-jhf07p strong:where(.svelte-jhf07p){letter-spacing:.02em;background:#10100ef0;border:0;border-radius:999px;padding:7px 11px;font-size:.86rem}@keyframes svelte-jhf07p-reward-rise{0%{opacity:0;transform:translate(-50%,12px)scale(.68)}24%{opacity:1;transform:translate(-50%,-12px)scale(1.08)}70%{opacity:1;transform:translate(-50%,-34px)scale(1)}to{opacity:0;transform:translate(-50%,-56px)scale(.96)}}@media (prefers-reduced-motion:reduce){.reward-feedback.svelte-jhf07p{animation:.8s forwards svelte-jhf07p-reward-fade}@keyframes svelte-jhf07p-reward-fade{0%{opacity:0}20%,75%{opacity:1}to{opacity:0}}}.site-header.svelte-a8kxe2{--site-header-page-inset:clamp(14px, 3vw, 32px);z-index:20;height:var(--site-header-height);padding:12px calc(var(--site-header-page-inset) + 7px) 2px calc(var(--site-header-page-inset) + 9px);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#090909c7;border-radius:0;justify-content:space-between;align-items:center;display:flex;position:fixed;top:0;left:0;right:0}.brand.svelte-a8kxe2{place-items:center;width:44px;height:44px;display:inline-grid}.brand.svelte-a8kxe2 img:where(.svelte-a8kxe2){object-fit:contain;width:44px;height:44px}.header-nav.svelte-a8kxe2{gap:6px;display:flex;position:absolute;left:50%;transform:translate(-50%)}.reader-context.svelte-a8kxe2{align-items:center;gap:12px;max-width:min(46vw,560px);display:flex;position:absolute;left:50%;transform:translate(-50%)}.reader-context.svelte-a8kxe2 button:where(.svelte-a8kxe2){color:#f3f3f1;cursor:pointer;background:0 0;border:0;border-radius:999px;justify-content:center;align-items:center;gap:7px;min-height:38px;padding:0 12px;display:inline-flex}.reader-context.svelte-a8kxe2 strong:where(.svelte-a8kxe2){color:#f3f3f1;text-overflow:ellipsis;white-space:nowrap;font-size:1.05rem;font-weight:600;overflow:hidden}.reader-context-actions.svelte-a8kxe2{flex:none;align-items:center;gap:6px;display:flex}.reader-context-actions.svelte-a8kxe2 .reader-icon-action:where(.svelte-a8kxe2){width:38px;padding:0}.reader-context.svelte-a8kxe2 button:where(.svelte-a8kxe2):hover,.reader-context.svelte-a8kxe2 button:where(.svelte-a8kxe2):focus-visible,.reader-context.svelte-a8kxe2 button.active:where(.svelte-a8kxe2){background:#ff8a3538}.header-nav.svelte-a8kxe2 a:where(.svelte-a8kxe2){color:#cfccc2;border-radius:999px;padding:10px 14px;font-size:.9rem}.header-nav.svelte-a8kxe2 a:where(.svelte-a8kxe2):hover{color:#fff;background:#ffffff14}.account-zone.svelte-a8kxe2{align-items:center;gap:8px;display:flex}.explanation-toggle.svelte-a8kxe2{color:#f3f3f1;cursor:pointer;background:0 0;border:0;border-radius:999px;place-items:center;width:38px;height:38px;display:inline-grid}.explanation-toggle.svelte-a8kxe2:hover,.explanation-toggle.svelte-a8kxe2:focus-visible,.explanation-toggle.active.svelte-a8kxe2{color:#fff;background:#ff8a3538}.translate-toggle.button{width:38px;height:38px;min-height:38px}.explanation-toggle.svelte-a8kxe2{color:#f3f3f1;cursor:pointer;background:0 0;border:0;border-radius:999px;flex:none;place-items:center;width:38px;height:38px;display:inline-grid;position:relative}.explanation-toggle.svelte-a8kxe2:disabled{cursor:default;opacity:.42}.explanation-unread.svelte-a8kxe2{background:var(--reader-accent);border-radius:999px;width:8px;height:8px;position:absolute;top:3px;right:3px;box-shadow:0 0 0 2px #11110f}.avatar-wrap.svelte-a8kxe2{position:relative}.xp-ring.svelte-a8kxe2{background:conic-gradient(var(--accent-2) var(--xp-progress), #ffffff1f 0);color:#f3f3f1;border-radius:50%;place-items:center;width:48px;height:48px;padding:3px;font-size:.66rem;font-weight:400;display:grid;position:relative}.xp-ring.svelte-a8kxe2>span:where(.svelte-a8kxe2){white-space:nowrap;background:#11110f;border-radius:50%;place-items:center;width:100%;height:100%;font-weight:400;display:grid}.xp-ring.animating.svelte-a8kxe2{animation:.7s cubic-bezier(.16,1,.3,1) svelte-a8kxe2-xp-ring-earned}.xp-popover.svelte-a8kxe2{z-index:4;background:#191916;border-radius:8px;width:180px;padding:11px 12px;display:none;position:absolute;top:50px;right:0;box-shadow:0 24px 70px #0000008c}.xp-popover.svelte-a8kxe2 strong:where(.svelte-a8kxe2),.xp-popover.svelte-a8kxe2 span:where(.svelte-a8kxe2){display:block}.xp-popover.svelte-a8kxe2 strong:where(.svelte-a8kxe2){font-size:.9rem}.xp-popover.svelte-a8kxe2 span:where(.svelte-a8kxe2){color:#aaa79d;text-transform:capitalize;margin-top:3px;font-size:.8rem}.xp-ring.svelte-a8kxe2:hover .xp-popover:where(.svelte-a8kxe2),.xp-ring.svelte-a8kxe2:focus-visible .xp-popover:where(.svelte-a8kxe2){display:block}.guest-translate.svelte-a8kxe2{position:relative}.guest-translate-popover.svelte-a8kxe2{background:#191916;border-radius:10px;width:min(300px,100vw - 28px);padding:14px;position:absolute;top:48px;right:0;box-shadow:0 24px 70px #0000008c}.guest-translate-popover.svelte-a8kxe2 p:where(.svelte-a8kxe2){color:#cfccc2;margin:0 0 11px;font-size:.84rem;line-height:1.45}.guest-translate-popover.svelte-a8kxe2 a:where(.svelte-a8kxe2){background:var(--accent-2);color:#180d06;border-radius:999px;align-items:center;min-height:36px;padding:0 12px;font-size:.8rem;font-weight:700;display:inline-flex}@keyframes svelte-a8kxe2-xp-ring-earned{0%{transform:scale(1)}45%{filter:drop-shadow(0 0 10px #ff8a3594);transform:scale(1.12)}to{transform:scale(1)}}.avatar-button.svelte-a8kxe2{color:#f4f2ed;cursor:pointer;background:#ffffff17;border:0;border-radius:999px;place-items:center;width:42px;height:42px;display:inline-grid;position:relative;overflow:hidden}.avatar-button.svelte-a8kxe2 img:where(.svelte-a8kxe2){object-fit:cover;width:100%;height:100%}.notification-dot.svelte-a8kxe2{background:#ff4f35;border-radius:999px;width:10px;height:10px;position:absolute;top:4px;right:4px;box-shadow:0 0 0 2px #090909}.avatar-menu.svelte-a8kxe2{background:#191916;border-radius:8px;width:min(260px,100vw - 28px);padding:8px;position:absolute;top:50px;right:0;box-shadow:0 24px 70px #0000008c}.account-summary.svelte-a8kxe2{gap:2px;padding:11px 12px 12px;display:grid}.account-summary.svelte-a8kxe2 strong:where(.svelte-a8kxe2){font-size:.95rem}.account-summary.svelte-a8kxe2 span:where(.svelte-a8kxe2){color:#aaa79d;overflow-wrap:anywhere;font-size:.8rem}.avatar-menu.svelte-a8kxe2 a:where(.svelte-a8kxe2),.avatar-menu.svelte-a8kxe2 button:where(.svelte-a8kxe2){color:#ebe8df;text-align:left;cursor:pointer;background:0 0;border:0;border-radius:6px;align-items:center;gap:10px;width:100%;min-height:38px;padding:0 10px;display:flex}.avatar-menu.svelte-a8kxe2 a:where(.svelte-a8kxe2):hover,.avatar-menu.svelte-a8kxe2 button:where(.svelte-a8kxe2):hover{background:#ffffff14}.mobile-primary-group.svelte-a8kxe2{display:none}.menu-volume.svelte-a8kxe2{border-top:1px solid #ffffff14;border-bottom:1px solid #ffffff14;margin:5px 0}@media (width<=760px){.header-nav.svelte-a8kxe2:not(.reader-context){display:none}.site-header.reader-active.svelte-a8kxe2{padding-left:calc(var(--site-header-page-inset) + 7px);gap:5px}.reader-active.svelte-a8kxe2 .brand:where(.svelte-a8kxe2){display:none}.reader-context.svelte-a8kxe2{flex:auto;gap:7px;min-width:0;max-width:none;position:static;transform:none}.reader-context.svelte-a8kxe2 button:where(.svelte-a8kxe2){flex:none;width:38px;padding:0}.reader-context.svelte-a8kxe2 button:where(.svelte-a8kxe2) span:where(.svelte-a8kxe2){display:none}.reader-context.svelte-a8kxe2 strong:where(.svelte-a8kxe2){font-size:.75rem}.reader-active.svelte-a8kxe2 .account-zone:where(.svelte-a8kxe2){gap:4px}.reader-active.svelte-a8kxe2 .translate-toggle.button,.reader-active.svelte-a8kxe2 .explanation-toggle:where(.svelte-a8kxe2),.reader-active.svelte-a8kxe2 .avatar-button:where(.svelte-a8kxe2){width:34px;height:34px;min-height:34px}.xp-ring.svelte-a8kxe2{display:none}.mobile-primary-group.svelte-a8kxe2{border-bottom:1px solid #ffffff14;margin-bottom:5px;padding-bottom:5px;display:block}}@media (prefers-reduced-motion:reduce){.xp-ring.animating.svelte-a8kxe2{animation:none}}.app-content-shell.svelte-12qhfyh{grid-template-columns:minmax(0,1fr);min-width:0;display:grid}.app-content-shell.reader-focus.svelte-12qhfyh{z-index:18;top:var(--site-header-reader-offset);background:#0b0b0a;align-items:stretch;position:fixed;bottom:0;left:0;right:0;overflow:hidden}.app-content-shell.reader-focus.svelte-12qhfyh #content{height:100%;position:relative;overflow:hidden}@media (width>=1100px){.app-content-shell.with-explanation.svelte-12qhfyh{grid-template-columns:minmax(0,1fr) clamp(320px,25vw,400px);gap:18px}.app-content-shell.with-explanation.svelte-12qhfyh .explanation-sidebar{margin:var(--site-header-content-offset) clamp(16px, 3vw, 42px) 64px 0;align-self:start}.app-content-shell.reader-focus.with-explanation.svelte-12qhfyh .explanation-sidebar{align-self:stretch;height:100%;margin:0 clamp(16px,3vw,42px) 0 0}.app-content-shell.with-explanation.svelte-12qhfyh #content{padding-inline:clamp(16px,2vw,30px)}}html.aie-explanation-mobile-open{overflow:hidden}