:root{--lrn-primary:#7c3aed;--lrn-primary-dark:#5b21b6;--lrn-primary-light:#c4b5fd;--lrn-secondary:#06b6d4;--lrn-accent:#f97316;--lrn-teal:#0d9488;--lrn-yellow:#eab308;--lrn-green:#22c55e;--lrn-success:#22c55e;--lrn-danger:#ef4444;--lrn-text:#1e1b4b;--lrn-text-muted:#6b7280;--lrn-text-light:#9ca3af;--lrn-bg:#fef9f0;--lrn-bg-alt:#f3f0ff;--lrn-bg-card:#ffffff;--lrn-border:#e9d5ff;--lrn-border-hover:#c4b5fd;--lrn-radius:1.25rem;--lrn-radius-sm:0.875rem;--lrn-radius-lg:2rem;--lrn-shadow:0 2px 8px rgba(124,58,237,.08),0 1px 3px rgba(0,0,0,.06);--lrn-shadow-md:0 6px 20px rgba(124,58,237,.12),0 2px 6px rgba(0,0,0,.07);--lrn-shadow-lg:0 12px 40px rgba(124,58,237,.15),0 4px 12px rgba(0,0,0,.08);--lrn-font:'Nunito','Poppins',system-ui,-apple-system,sans-serif;--lrn-font-mono:'JetBrains Mono','Fira Code',monospace;--lrn-transition:0.2s ease;--lrn-gap:1.5rem;--lrn-gap-sm:0.75rem;--lrn-gap-lg:2.5rem;}*,*::before,*::after{box-sizing:border-box;}body{margin:0;font-family:var(--lrn-font);font-size:1rem;line-height:1.6;color:var(--lrn-text);background:var(--lrn-bg);-webkit-font-smoothing:antialiased;}a{color:var(--lrn-primary);text-decoration:none;}a:hover{color:var(--lrn-primary-dark);text-decoration:underline;}img{max-width:100%;height:auto;display:block;}.lrn-lang-icon{display:inline-flex;align-items:center;justify-content:center;vertical-align:middle;line-height:1;}.lrn-lang-icon svg,.lrn-lang-icon img{width:1.25em;height:1.25em;display:block;object-fit:contain;}h1,h2,h3,h4,h5,h6{margin:0 0 0.5em;font-weight:800;line-height:1.2;color:var(--lrn-text);}p{margin:0 0 1em;}p:last-child{margin-bottom:0;}.lrn-container{width:100%;max-width:1200px;margin:0 auto;padding:0 1rem;}@media (min-width:640px){.lrn-container{padding:0 1.5rem;}}@media (min-width:1024px){.lrn-container{padding:0 2rem;}}.lrn-section{padding:4rem 0;}.lrn-section-alt{padding:4rem 0;background:var(--lrn-bg-alt);}.lrn-py-xl{padding-top:4rem;padding-bottom:4rem;}.lrn-mt-md{margin-top:1.5rem;}.lrn-text-center{text-align:center;}.lrn-muted{color:var(--lrn-text-muted);}.lrn-header{position:sticky;top:0;z-index:5000;background:rgba(255,255,255,0.97);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(233,213,255,.55);box-shadow:0 2px 20px rgba(124,58,237,.07),0 1px 4px rgba(0,0,0,.05);padding-top:3px;}.lrn-header.bws-navbar{display:grid;grid-template-columns:auto minmax(0,1fr) auto;min-height:4.5rem;padding:0.45rem 1rem 0.5rem;align-items:center;gap:1rem;flex-wrap:nowrap;}.lrn-header::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#22c55e  0%,#06b6d4 22%,#7c3aed 52%,#f97316 78%,#eab308 100% );}.lrn-navbar{display:flex;align-items:center;gap:1rem;height:4.25rem;}.lrn-brand{display:flex;align-items:center;gap:0.5rem;font-size:1.25rem;font-weight:900;color:var(--lrn-primary);text-decoration:none;flex-shrink:0;grid-column:1;min-width:0;}.lrn-brand:hover{color:var(--lrn-primary-dark);text-decoration:none;}.lrn-brand-icon{font-size:1.5rem;}.lrn-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}.lrn-brand-hero{width:min(400px,100%);height:auto;aspect-ratio:400 / 187;display:block;object-fit:contain;mix-blend-mode:multiply;filter:drop-shadow(0 4px 20px rgba(0,0,0,.18));transition:transform .3s cubic-bezier(.34,1.56,.64,1);}.lrn-brand-hero:hover{transform:scale(1.04) rotate(-1deg);}.lrn-brand-logo{height:58px;width:auto;display:block;object-fit:contain;filter:drop-shadow(0 2px 6px rgba(0,0,0,.10));transition:transform .22s cubic-bezier(.34,1.56,.64,1),filter .22s ease;}.lrn-header .bws-navbar-actions{grid-column:3;order:initial;margin-left:0;flex-wrap:nowrap;justify-content:flex-end;min-width:0;align-self:center;}.lrn-header .bws-navbar-collapse{grid-column:2;order:initial;flex:1 1 auto;justify-content:flex-end;align-items:center;gap:0.45rem;min-width:0;overflow:visible;}.lrn-header .bws-navbar-link{border-radius:999px;color:var(--lrn-text-muted);font-family:var(--lrn-font);font-size:0.88rem;font-weight:800;padding:0.42rem 0.68rem;white-space:nowrap;}.lrn-header .bws-navbar-link:hover{background:var(--lrn-bg-alt);color:var(--lrn-primary);text-decoration:none;}.lrn-nav-menu{position:relative;}.lrn-nav-menu > summary{list-style:none;cursor:pointer;}.lrn-nav-menu > summary::-webkit-details-marker{display:none;}.lrn-nav-menu > summary::after{content:"▾";font-size:.68rem;margin-left:.28rem;}.lrn-nav-menu[open] > summary{background:var(--lrn-bg-alt);color:var(--lrn-primary);}.lrn-nav-menu-panel{position:absolute;top:calc(100% + .35rem);right:0;z-index:5010;min-width:12rem;padding:.45rem;background:#fff;border:1px solid var(--lrn-border);border-radius:.85rem;box-shadow:var(--lrn-shadow-lg);}.lrn-nav-menu-item{display:flex;align-items:center;justify-content:space-between;gap:.65rem;border-radius:.65rem;color:var(--lrn-text);font-size:.86rem;font-weight:850;padding:.58rem .68rem;text-decoration:none;white-space:nowrap;}.lrn-nav-menu-item--indent{padding-left:2rem;font-size:.82rem;opacity:.85;}.lrn-nav-menu-item:hover,.lrn-nav-menu-item:focus-visible{background:var(--lrn-bg-alt);color:var(--lrn-primary);text-decoration:none;}.lrn-nav-count{min-width:1.25rem;height:1.25rem;border-radius:999px;background:#dc2626;color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:.68rem;font-weight:900;}@media (max-width:980px) and (min-width:761px){.lrn-header.bws-navbar{grid-template-columns:auto auto 1fr;}.lrn-brand-logo{height:50px;}.lrn-header .bws-navbar-collapse{grid-column:1 / -1;justify-content:flex-end;border-top:1px solid rgba(233,213,255,.7);padding-top:0.35rem;}.lrn-header .bws-navbar-actions{grid-column:3;}}.lrn-header .bws-navbar-toggle{align-items:center;justify-content:center;width:2.35rem;height:2.35rem;padding:0;border:1px solid var(--lrn-border);border-radius:0.75rem;background:#fff;color:var(--lrn-primary);box-shadow:0 2px 8px rgba(124,58,237,.10);flex:0 0 auto;}.lrn-header .bws-navbar-toggle:hover,.lrn-header .bws-navbar-toggle:focus-visible{border-color:var(--lrn-border-hover);background:var(--lrn-bg-alt);outline:none;}.lrn-notif-bell{position:relative;flex:0 0 auto;}.lrn-notif-bell-btn{width:2.35rem;height:2.35rem;border:1px solid var(--lrn-border);border-radius:999px;background:#fff;color:var(--lrn-primary-dark);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 2px 8px rgba(124,58,237,.10);position:relative;}.lrn-notif-bell-btn:hover,.lrn-notif-bell-btn:focus-visible{background:var(--lrn-bg-alt);border-color:var(--lrn-border-hover);outline:none;}.lrn-notif-badge{position:absolute;top:-.18rem;right:-.18rem;min-width:1.05rem;height:1.05rem;border-radius:999px;background:#dc2626;color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:.64rem;font-weight:900;line-height:1;box-shadow:0 0 0 2px #fff;}.lrn-notif-dropdown{position:absolute;top:calc(100% + .55rem);right:0;z-index:5020;width:min(21rem,calc(100vw - 1rem));overflow:hidden;background:#fff;border:1px solid var(--lrn-border);border-radius:1rem;box-shadow:0 18px 44px rgba(30,27,75,.2);}.lrn-notif-dropdown[hidden]{display:none;}.lrn-notif-dropdown-header{display:flex;align-items:center;justify-content:space-between;gap:.75rem;background:linear-gradient(135deg,#4c1d95,#0f766e);color:#fff;padding:.75rem .85rem;font-size:.86rem;font-weight:900;}.lrn-notif-dropdown-header a{color:rgba(255,255,255,.9) !important;font-size:.74rem !important;font-weight:900;text-decoration:none;white-space:nowrap;}.lrn-notif-dropdown-header a:hover{color:#fff !important;text-decoration:underline;}.lrn-notif-list{max-height:18rem;overflow:auto;padding:.45rem;}.lrn-notif-item{display:block;border-radius:.75rem;padding:.65rem .7rem;color:var(--lrn-text);text-decoration:none;}.lrn-notif-item:hover,.lrn-notif-item:focus-visible{background:var(--lrn-bg-alt);color:var(--lrn-text);text-decoration:none;outline:none;}.lrn-notif-item-title{color:var(--lrn-text);font-size:.84rem;font-weight:900;line-height:1.25;}.lrn-notif-item-msg{color:var(--lrn-text-muted);font-size:.76rem;font-weight:700;line-height:1.35;margin-top:.18rem;}.lrn-notif-empty{color:var(--lrn-text-muted);font-size:.84rem;font-weight:800;padding:1.1rem .75rem;text-align:center;}.lrn-brand:hover .lrn-brand-logo{transform:scale(1.06);filter:drop-shadow(0 4px 14px rgba(124,58,237,.28));}.lrn-nav-links{display:none;align-items:center;gap:0.25rem;flex:1;margin-left:1rem;}@media (min-width:768px){.lrn-nav-links{display:flex;}}.lrn-nav-link{padding:0.4rem 0.9rem;border-radius:2rem;font-size:0.9rem;font-weight:700;color:var(--lrn-text-muted);transition:color var(--lrn-transition),background var(--lrn-transition);}.lrn-nav-link:hover{color:var(--lrn-primary);background:var(--lrn-bg-alt);text-decoration:none;}.lrn-nav-actions{display:flex;align-items:center;gap:0.5rem;margin-left:auto;}.lrn-profile-pick-btn{align-items:center;gap:0.35rem;white-space:nowrap;}#btnInstallPwa{display:none;}#btnInstallPwa.visible{display:flex;}.lrn-install-btn{align-items:center;gap:0.4rem;cursor:pointer;transition:opacity var(--lrn-transition),transform var(--lrn-transition);}.lrn-install-btn:hover{opacity:0.9;transform:scale(1.04);}@media (max-width:760px){.lrn-header.bws-navbar{display:flex;min-height:4rem;padding:0.35rem 0.55rem 0.45rem;gap:0.35rem;align-items:center;}.lrn-header.bws-navbar.bws-navbar-open{flex-wrap:wrap;}.lrn-brand{max-width:38vw;}.lrn-brand-logo{height:42px;max-width:120px;}.lrn-header .bws-navbar-actions{order:2;gap:0.25rem;flex:1 1 auto;margin-left:auto;}.lrn-header .bws-navbar-actions .bws-btn-sm{min-height:2rem;padding:0.32rem 0.48rem;}.lrn-header .lrn-install-label{display:none;}.lrn-profile-pick-btn{width:2rem;min-width:2rem;padding-left:0;padding-right:0;}.lrn-profile-pick-label{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}.lrn-nav-pair-badge{min-height:2rem;padding:0.22rem 0.45rem;gap:0.2rem;}.lrn-nav-child-pill{max-width:7.5rem;min-height:2rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}.lrn-header .bws-navbar-collapse{order:3;flex:0 0 100%;width:100%;overflow:visible;margin-top:0.35rem;padding:0.35rem;border:1px solid var(--lrn-border);border-radius:0.75rem;background:#fff;box-shadow:var(--lrn-shadow-md);}.lrn-header .bws-navbar-link{width:100%;padding:0.5rem 0.65rem;color:var(--lrn-text);}.lrn-nav-menu{width:100%;}.lrn-nav-menu-panel{position:static;min-width:0;width:100%;margin-top:.25rem;border-radius:.75rem;box-shadow:none;background:#f8fafc;}.lrn-nav-menu-item{white-space:normal;}}@media (max-width:420px){.lrn-brand{max-width:34vw;}.lrn-brand-logo{height:38px;max-width:108px;}.lrn-header .bws-navbar-actions .bws-btn-sm{width:2rem;padding-left:0;padding-right:0;}.lrn-nav-pair-badge{max-width:5.25rem;}}.lrn-hero{background:linear-gradient(135deg,#0369a1 0%,#7c3aed 35%,#f97316 65%,#eab308 100%);color:#fff;padding:5rem 0 5rem;text-align:center;position:relative;overflow:hidden;}.lrn-hero::before{content:'';position:absolute;top:-60px;right:-60px;width:320px;height:320px;border-radius:50%;background:rgba(255,255,255,.06);animation:heroBlob 6s ease-in-out infinite;}.lrn-hero::after{content:'';position:absolute;bottom:-80px;left:-60px;width:400px;height:400px;border-radius:50%;background:rgba(255,255,255,.05);animation:heroBlob 8s ease-in-out infinite reverse;}@keyframes heroBlob{0%,100%{transform:translate(0,0) scale(1);}50%{transform:translate(20px,15px) scale(1.05);}}.lrn-hero-content{position:relative;z-index:1;}.lrn-hero-eyebrow{display:inline-flex;align-items:center;gap:0.4rem;background:rgba(255,255,255,0.2);border:1px solid rgba(255,255,255,0.35);border-radius:2rem;padding:0.35rem 1.1rem;font-size:0.85rem;font-weight:800;letter-spacing:0.04em;text-transform:uppercase;margin-bottom:1.25rem;}.lrn-hero-title{font-size:clamp(2.2rem,5.5vw,3.75rem);font-weight:900;line-height:1.08;margin-bottom:1.25rem;color:#fff;text-shadow:0 2px 20px rgba(0,0,0,.15);}.lrn-hero-subtitle{font-size:clamp(1rem,2.2vw,1.3rem);opacity:0.92;font-weight:600;max-width:560px;margin:0 auto 2.25rem;}.lrn-hero-actions{display:flex;flex-wrap:wrap;gap:0.875rem;justify-content:center;}.lrn-hero-stats{display:flex;flex-wrap:wrap;gap:2.5rem;justify-content:center;margin-top:3.5rem;padding-top:2rem;border-top:1px solid rgba(255,255,255,0.25);}.lrn-hero-stat strong{display:block;font-size:2rem;font-weight:900;color:#fff;}.lrn-hero-stat span{font-size:0.875rem;opacity:0.8;font-weight:600;}.lrn-kiddo-parent-banner{background:#fff7ed;padding:1.25rem 0 0;}.lrn-kiddo-parent-card{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:1rem;background:linear-gradient(135deg,#ffffff 0%,#fff7ed 52%,#fef3c7 100%);border:2px solid rgba(249,115,22,.22);border-radius:1.25rem;box-shadow:0 14px 34px rgba(124,58,237,.12);padding:1rem 1.15rem;}.lrn-kiddo-parent-icon{display:inline-flex;align-items:center;justify-content:center;width:5.75rem;height:5.75rem;}.lrn-kiddo-parent-icon img{width:100%;height:100%;object-fit:contain;object-position:center center;filter:drop-shadow(0 10px 16px rgba(124,58,237,.18));}.lrn-kiddo-parent-copy h2{margin:0 0 .25rem;color:#321071;font-size:1.2rem;font-weight:900;line-height:1.2;}.lrn-kiddo-parent-copy p{margin:0;color:#5b3b12;font-size:.95rem;font-weight:800;line-height:1.45;}.lrn-kiddo-parent-btn{align-items:center;gap:.4rem;min-height:2.85rem;padding:.75rem 1.15rem !important;line-height:1.2 !important;text-align:center;white-space:nowrap;}@media (max-width:700px){.lrn-kiddo-parent-banner{padding-top:.85rem;}.lrn-kiddo-parent-card{grid-template-columns:auto minmax(0,1fr);gap:.85rem;padding:.9rem;}.lrn-kiddo-parent-icon{width:4.6rem;height:4.6rem;}.lrn-kiddo-parent-copy h2{font-size:1.02rem;}.lrn-kiddo-parent-copy p{font-size:.86rem;}.lrn-kiddo-parent-btn{grid-column:1 / -1;width:100%;justify-content:center;white-space:normal;padding:.85rem 1rem !important;}}.bws-btn-primary,.lrn-btn-primary{background:linear-gradient(135deg,var(--lrn-primary),#a855f7) !important;border:none !important;border-radius:2rem !important;font-weight:800 !important;font-family:var(--lrn-font) !important;transition:transform 0.15s ease,box-shadow 0.15s ease !important;box-shadow:0 4px 14px rgba(124,58,237,.35) !important;}.bws-btn-primary:hover,.lrn-btn-primary:hover{transform:translateY(-2px) scale(1.02) !important;box-shadow:0 8px 24px rgba(124,58,237,.45) !important;}.bws-btn-primary:active{transform:translateY(0) !important;}.lrn-section-head{text-align:center;margin-bottom:2.75rem;}.lrn-section-head h2{font-size:clamp(1.6rem,3.5vw,2.5rem);font-weight:900;margin-bottom:0.6rem;}.lrn-section-head p{color:var(--lrn-text-muted);font-size:1.05rem;max-width:560px;margin:0 auto;}.lrn-categories-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--lrn-gap);}.lrn-category-card:nth-child(4n+1){--card-accent:var(--lrn-primary);--card-bg:#f5f3ff;}.lrn-category-card:nth-child(4n+2){--card-accent:var(--lrn-teal);--card-bg:#f0fdfa;}.lrn-category-card:nth-child(4n+3){--card-accent:var(--lrn-accent);--card-bg:#fff7ed;}.lrn-category-card:nth-child(4n+0){--card-accent:var(--lrn-secondary);--card-bg:#ecfeff;}.lrn-category-card{display:flex;flex-direction:column;align-items:center;text-align:center;padding:2rem 1.5rem 1.75rem;background:var(--card-bg,#f5f3ff);border:2px solid transparent;border-radius:var(--lrn-radius);box-shadow:var(--lrn-shadow);text-decoration:none;color:var(--lrn-text);transition:border-color var(--lrn-transition),box-shadow var(--lrn-transition),transform var(--lrn-transition);position:relative;overflow:hidden;}.lrn-category-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--card-accent,var(--lrn-primary));border-radius:4px 4px 0 0;}.lrn-category-card:hover{border-color:var(--card-accent,var(--lrn-primary));box-shadow:var(--lrn-shadow-md);transform:translateY(-4px) scale(1.02);text-decoration:none;color:var(--lrn-text);}.lrn-category-icon{font-size:3rem;margin-bottom:0.875rem;line-height:1;animation:iconWobble 4s ease-in-out infinite;}.lrn-category-card:hover .lrn-category-icon{animation:iconBounce 0.5s ease;}@keyframes iconWobble{0%,100%{transform:rotate(-2deg);}50%{transform:rotate(2deg);}}@keyframes iconBounce{0%,100%{transform:scale(1);}40%{transform:scale(1.25) rotate(5deg);}70%{transform:scale(0.95) rotate(-3deg);}}.lrn-category-card h3{font-size:1.1rem;font-weight:800;margin-bottom:0.35rem;color:var(--card-accent,var(--lrn-primary));}.lrn-category-card-desc{font-size:0.85rem;color:var(--lrn-text-muted);margin-bottom:0.875rem;flex:1;}.lrn-category-card-count{font-size:0.8rem;font-weight:800;color:var(--card-accent,var(--lrn-primary));background:rgba(255,255,255,.7);border-radius:2rem;padding:0.2rem 0.875rem;border:1px solid var(--card-accent,var(--lrn-primary));}.lrn-lessons-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:var(--lrn-gap);}.lrn-lesson-card{display:flex;flex-direction:column;background:var(--lrn-bg-card);border:2px solid var(--lrn-border);border-radius:var(--lrn-radius);box-shadow:var(--lrn-shadow);overflow:hidden;transition:border-color var(--lrn-transition),box-shadow var(--lrn-transition),transform var(--lrn-transition);}.lrn-lesson-card:hover{border-color:var(--lrn-primary-light);box-shadow:var(--lrn-shadow-md);transform:translateY(-3px);}.lrn-lesson-card-img{aspect-ratio:16/9;overflow:hidden;background:var(--lrn-bg-alt);}.lrn-lesson-card-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.35s ease;}.lrn-lesson-card:hover .lrn-lesson-card-img img{transform:scale(1.05);}.lrn-lesson-card-body{display:flex;flex-direction:column;flex:1;padding:1.25rem;}.lrn-lesson-meta{display:flex;align-items:center;gap:0.5rem;margin-bottom:0.5rem;}.lrn-lesson-sub-badge{display:inline-block;font-size:0.75rem;font-weight:800;color:#075985;background:#e0f2fe;border:1px solid #bae6fd;border-radius:2rem;padding:0.15rem 0.7rem;}.lrn-lesson-title{font-size:1.05rem;font-weight:800;margin-bottom:0.5rem;line-height:1.3;}.lrn-lesson-title a{color:var(--lrn-text);}.lrn-lesson-title a:hover{color:var(--lrn-primary);text-decoration:none;}.lrn-lesson-excerpt{font-size:0.875rem;color:var(--lrn-text-muted);flex:1;margin-bottom:1rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}.lrn-lesson-footer{display:flex;align-items:center;justify-content:space-between;gap:0.5rem;margin-top:auto;}.lrn-lesson-phrase-count{font-size:0.8rem;font-weight:700;color:var(--lrn-text-muted);display:flex;align-items:center;gap:0.3rem;}.lrn-section-install{padding:4.5rem 0;background:linear-gradient(135deg,#1e1b4b 0%,#4c1d95 50%,#1e1b4b 100%);color:#fff;text-align:center;position:relative;overflow:hidden;}.lrn-install-promo{display:none;}.lrn-install-promo.visible{display:block;}.lrn-section-install h2{color:#fff;font-size:clamp(1.5rem,3vw,2.25rem);margin-bottom:0.75rem;}.lrn-section-install p{color:rgba(255,255,255,.8);margin-bottom:1.5rem;}.lrn-install-features{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center;margin-bottom:2rem;}.lrn-install-feature{display:flex;align-items:center;gap:0.4rem;font-size:0.9rem;font-weight:700;color:rgba(255,255,255,.9);}.lrn-install-feature i{color:var(--lrn-yellow);}.lrn-breadcrumb{padding:1rem 0;}.lrn-breadcrumb ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;align-items:center;gap:0.25rem;font-size:0.875rem;font-weight:600;color:var(--lrn-text-muted);}.lrn-breadcrumb li{display:flex;align-items:center;}.lrn-breadcrumb li + li::before{content:'›';margin-right:0.25rem;color:var(--lrn-border-hover);font-weight:700;}.lrn-breadcrumb a{color:var(--lrn-text-muted);}.lrn-breadcrumb a:hover{color:var(--lrn-primary);}.lrn-breadcrumb [aria-current="page"]{color:var(--lrn-primary);font-weight:800;}.lrn-category-header{padding:1.5rem 0 2rem;border-bottom:2px solid var(--lrn-border);margin-bottom:2rem;}.lrn-category-h1{font-size:clamp(1.5rem,3vw,2.25rem);font-weight:900;margin-bottom:0.5rem;}.lrn-category-sub{font-weight:600;color:var(--lrn-text-muted);}.lrn-category-desc-full{color:var(--lrn-text-muted);margin-bottom:0.75rem;max-width:720px;}.lrn-category-stats{font-size:0.9rem;font-weight:700;color:var(--lrn-text-muted);}.lrn-sub-tabs{display:flex;flex-wrap:wrap;gap:0.5rem;margin-bottom:2rem;}.lrn-sub-tab{padding:0.45rem 1.1rem;border-radius:2rem;font-size:0.875rem;font-weight:800;color:var(--lrn-text-muted);background:var(--lrn-bg-alt);border:2px solid var(--lrn-border);transition:all var(--lrn-transition);text-decoration:none;}.lrn-sub-tab:hover{border-color:var(--lrn-primary);color:var(--lrn-primary);text-decoration:none;}.lrn-sub-tab.active{background:var(--lrn-primary);border-color:var(--lrn-primary);color:#fff;}.lrn-pagination{display:flex;align-items:center;justify-content:center;gap:1rem;padding:2rem 0;}.lrn-pagination-info{font-size:0.875rem;font-weight:700;color:var(--lrn-text-muted);}.lrn-lesson-layout{display:grid;grid-template-columns:1fr;gap:2rem;padding-bottom:4rem;overflow-x:clip;}@media (min-width:1024px){.lrn-lesson-layout{grid-template-columns:1fr 300px;align-items:start;}}.lrn-lesson-primary{min-width:0;}.lrn-lesson-sidebar{order:2;}@media (min-width:1024px){.lrn-lesson-sidebar{position:sticky;top:4.5rem;}}.lrn-lesson-header{padding:1rem 0 1.75rem;}.lrn-lesson-badges{display:flex;flex-wrap:wrap;gap:0.5rem;margin-bottom:0.875rem;}.lrn-lesson-cat-badge{font-size:0.75rem;font-weight:800;color:var(--lrn-primary);background:var(--lrn-bg-alt);border:2px solid var(--lrn-primary-light);border-radius:2rem;padding:0.2rem 0.875rem;text-transform:uppercase;letter-spacing:0.04em;text-decoration:none;}.lrn-lesson-cat-badge:hover{background:var(--lrn-primary);color:#fff;text-decoration:none;}.lrn-lesson-sub-badge{display:inline-block;font-size:0.75rem;font-weight:800;color:#075985;background:#e0f2fe;border:1px solid #bae6fd;border-radius:2rem;padding:0.2rem 0.7rem;}.lrn-lesson-h1{font-size:clamp(1.6rem,4vw,2.5rem);font-weight:900;margin-bottom:0.875rem;}.lrn-lesson-meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:1rem;font-size:0.875rem;font-weight:700;color:var(--lrn-text-muted);}.lrn-lesson-date,.lrn-lesson-phrase-count{display:flex;align-items:center;gap:0.3rem;}.lrn-lesson-featured-img{margin-bottom:2rem;border-radius:var(--lrn-radius);overflow:hidden;box-shadow:var(--lrn-shadow-lg);border:3px solid var(--lrn-border);}.lrn-lesson-featured-img img{width:100%;}.lrn-lesson-article.lrn-prose{font-size:1.05rem;line-height:1.8;color:var(--lrn-text);margin-bottom:2.5rem;}.lrn-prose h2{font-size:1.5rem;font-weight:800;margin:1.5em 0 0.5em;color:var(--lrn-primary);}.lrn-prose h3{font-size:1.2rem;font-weight:800;margin:1.25em 0 0.5em;}.lrn-prose p{margin:0 0 1em;}.lrn-prose ul,.lrn-prose ol{padding-left:1.5rem;margin:0 0 1em;}.lrn-prose li{margin-bottom:0.35em;}.lrn-prose strong{font-weight:800;color:var(--lrn-primary);}.lrn-prose em{font-style:italic;}.lrn-prose a{color:var(--lrn-primary);text-decoration:underline;}.lrn-prose blockquote{margin:1.5em 0;padding:1rem 1.5rem;border-left:4px solid var(--lrn-primary);background:var(--lrn-bg-alt);border-radius:0 var(--lrn-radius-sm) var(--lrn-radius-sm) 0;color:var(--lrn-text-muted);font-weight:600;}.lrn-prose code{font-family:var(--lrn-font-mono);font-size:0.9em;background:#f3f0ff;padding:0.1em 0.4em;border-radius:0.3em;color:var(--lrn-primary);}.lrn-prose pre{background:#1e1b4b;color:#e2e8f0;border-radius:var(--lrn-radius);padding:1rem;overflow-x:auto;}.lrn-phrases-section{margin-bottom:2.5rem;}.lrn-phrases-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:0.75rem;margin-bottom:1.5rem;}.lrn-phrases-title{font-size:1.35rem;font-weight:900;display:flex;align-items:center;gap:0.5rem;margin:0;color:var(--lrn-primary);}.lrn-phrase-badge{font-size:0.8rem;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--lrn-primary),var(--lrn-secondary));border-radius:2rem;padding:0.15rem 0.7rem;}.lrn-phrases-controls{display:flex;align-items:center;gap:0.5rem;flex-wrap:wrap;}.lrn-phrases-controls .bws-btn,.lrn-listen-btn{appearance:none;-webkit-appearance:none;min-height:2.45rem;border-radius:999px;border:0;padding:0.58rem 1rem;font-family:var(--lrn-font);font-size:0.88rem;font-weight:900;line-height:1;display:inline-flex;align-items:center;justify-content:center;gap:0.38rem;cursor:pointer;box-shadow:0 6px 16px rgba(30,27,75,.12);transition:transform .16s ease,box-shadow .16s ease,background .16s ease,color .16s ease;}.lrn-phrases-controls .bws-btn:hover,.lrn-listen-btn:hover{transform:translateY(-1px);box-shadow:0 9px 22px rgba(30,27,75,.16);text-decoration:none;}#btnPlayAll{background:#fff;color:var(--lrn-text);border:2px solid #ddd6fe;}#btnPlayAll:hover{color:var(--lrn-primary);border-color:var(--lrn-primary-light);background:#f5f3ff;}#btnWorksheets,.lrn-worksheets-btn{background:#eef2ff;color:#5b21b6;border:2px solid #c4b5fd;}#btnWorksheets:hover,.lrn-worksheets-btn:hover{background:#7c3aed;border-color:#7c3aed;color:#fff;}.lrn-listen-btn{align-self:flex-start;margin-top:0.45rem;min-height:2.4rem;padding:0.55rem 0.95rem;background:#fff;color:#5b21b6;border:2px solid #ddd6fe;box-shadow:0 4px 12px rgba(124,58,237,.10);}.lrn-listen-btn:hover{background:#7c3aed;border-color:#7c3aed;color:#fff;}.lrn-phrase-list{display:flex;flex-direction:column;gap:1rem;}.lrn-phrase-card:nth-child(5n+1){--pc:#f5f3ff;--pb:var(--lrn-primary);}.lrn-phrase-card:nth-child(5n+2){--pc:#f0fdfa;--pb:var(--lrn-teal);}.lrn-phrase-card:nth-child(5n+3){--pc:#fff7ed;--pb:var(--lrn-accent);}.lrn-phrase-card:nth-child(5n+4){--pc:#ecfeff;--pb:var(--lrn-secondary);}.lrn-phrase-card:nth-child(5n+0){--pc:#f0fdf4;--pb:var(--lrn-green);}.lrn-phrase-card{display:flex;gap:1rem;background:var(--pc,#f5f3ff);border:2px solid transparent;border-radius:var(--lrn-radius);padding:1.25rem;transition:border-color var(--lrn-transition),box-shadow var(--lrn-transition),transform var(--lrn-transition);position:relative;overflow:hidden;}.lrn-phrase-card::before{content:'';position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--pb,var(--lrn-primary));border-radius:4px 0 0 4px;}.lrn-phrase-card:hover{border-color:var(--pb,var(--lrn-primary));box-shadow:var(--lrn-shadow-md);transform:translateX(3px);}.lrn-phrase-number{flex-shrink:0;width:2.25rem;height:2.25rem;border-radius:50%;background:var(--pb,var(--lrn-primary));display:flex;align-items:center;justify-content:center;font-size:0.85rem;font-weight:900;color:#fff;margin-top:0.1rem;box-shadow:0 3px 8px rgba(0,0,0,.15);}.lrn-phrase-illustration{flex-shrink:0;width:90px;}.lrn-phrase-illustration img{width:90px;height:90px;object-fit:cover;border-radius:var(--lrn-radius-sm);border:3px solid rgba(255,255,255,.8);box-shadow:0 3px 10px rgba(0,0,0,.12);}@media (max-width:480px){.lrn-phrase-illustration{width:64px;}.lrn-phrase-illustration img{width:64px;height:64px;}.lrn-phrases-header{gap:0.5rem;}.lrn-phrases-controls{width:100%;gap:0.4rem;}.lrn-phrases-controls .bws-btn-sm{flex:1 1 auto;padding:.4rem .6rem;font-size:.8rem;justify-content:center;min-width:0;}}.lrn-phrase-langs{flex:1;min-width:0;display:flex;flex-direction:column;gap:0.875rem;}.lrn-phrase-lang{display:flex;flex-direction:column;gap:0.35rem;}.lrn-phrase-lang-label{display:flex;align-items:center;gap:0.4rem;font-size:0.72rem;font-weight:800;color:var(--pb,var(--lrn-primary));text-transform:uppercase;letter-spacing:0.06em;}.lrn-phrase-flag{font-size:1.1rem;}.lrn-phrase-content{display:flex;flex-direction:column;gap:0.15rem;}.lrn-phrase-text{font-size:1.15rem;font-weight:800;color:var(--lrn-text);line-height:1.35;margin:0;}.lrn-phrase-text.lrn-chinese{font-size:1.35rem;letter-spacing:0.05em;}.lrn-phrase-roman{font-size:1.5rem;color:var(--lrn-text-muted);font-style:italic;margin:0;font-weight:600;}.lrn-phrase-notes{font-size:0.85rem;font-weight:700;color:#92400e;background:#fffbeb;border:2px solid #fde68a;border-radius:var(--lrn-radius-sm);padding:0.5rem 0.875rem;display:flex;align-items:flex-start;gap:0.4rem;margin-top:0.5rem;}.lrn-lesson-nav{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-top:2.5rem;padding-top:2rem;border-top:2px solid var(--lrn-border);}@media (max-width:600px){.lrn-lesson-nav{grid-template-columns:1fr;}}.lrn-lesson-nav-prev,.lrn-lesson-nav-next{display:flex;align-items:center;gap:0.75rem;padding:1rem 1.25rem;background:var(--lrn-bg-alt);border:2px solid var(--lrn-border);border-radius:var(--lrn-radius);color:var(--lrn-text);text-decoration:none;font-weight:700;transition:all var(--lrn-transition);}.lrn-lesson-nav-prev:hover,.lrn-lesson-nav-next:hover{border-color:var(--lrn-primary);background:var(--lrn-bg-alt);color:var(--lrn-primary);text-decoration:none;transform:scale(1.02);}.lrn-lesson-nav-next{justify-content:flex-end;text-align:right;}.lrn-lesson-nav-prev span,.lrn-lesson-nav-next span{display:flex;flex-direction:column;}.lrn-lesson-nav-prev small,.lrn-lesson-nav-next small{font-size:0.75rem;color:var(--lrn-text-muted);font-weight:600;}.lrn-lesson-nav-prev strong,.lrn-lesson-nav-next strong{font-size:0.9rem;font-weight:800;}.lrn-sidebar-widget{background:#fff;border:2px solid var(--lrn-border);border-radius:var(--lrn-radius);padding:1.35rem;}.lrn-sidebar-widget-title{font-size:0.875rem;font-weight:900;text-transform:uppercase;letter-spacing:0.05em;color:var(--lrn-primary);margin-bottom:1rem;display:flex;align-items:center;gap:0.35rem;}.lrn-sidebar-lessons{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:0;}.lrn-sidebar-lessons li{border-bottom:1px solid var(--lrn-border);}.lrn-sidebar-lessons li:last-child{border-bottom:none;}.lrn-sidebar-lesson-link{display:flex;align-items:center;justify-content:space-between;padding:0.65rem 0;gap:0.5rem;text-decoration:none;color:var(--lrn-text);font-size:0.875rem;font-weight:700;transition:color var(--lrn-transition);}.lrn-sidebar-lesson-link:hover{color:var(--lrn-primary);text-decoration:none;}.lrn-sidebar-lesson-title{flex:1;line-height:1.35;}.lrn-sidebar-lesson-count{font-size:0.75rem;color:var(--lrn-text-light);white-space:nowrap;}.lrn-empty{text-align:center;padding:4rem 1rem;color:var(--lrn-text-muted);}.lrn-empty-icon{font-size:3.5rem;display:block;margin-bottom:1rem;}.lrn-offline-wrap{max-width:480px;margin:0 auto;padding:3rem 1rem;text-align:center;}.lrn-offline-icon{font-size:4rem;margin-bottom:1rem;}.lrn-offline-title{font-size:1.75rem;font-weight:900;margin-bottom:0.75rem;}.lrn-offline-desc{color:var(--lrn-text-muted);font-weight:600;margin-bottom:1.5rem;}.lrn-offline-actions{display:flex;flex-wrap:wrap;gap:0.75rem;justify-content:center;margin-bottom:1.5rem;}.lrn-offline-hint{font-size:0.85rem;color:var(--lrn-text-muted);font-weight:600;}.lrn-worlds-section{background:var(--lrn-bg);}.lrn-section-subtitle{text-align:center;color:var(--lrn-text-muted);font-size:1.05rem;font-weight:600;margin-top:-0.75rem;margin-bottom:2.5rem;}.lrn-worlds-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;max-width:1080px;margin:0 auto;}@media (max-width:860px){.lrn-worlds-grid{grid-template-columns:repeat(3,1fr);max-width:640px;}}@media (max-width:520px){.lrn-worlds-grid{grid-template-columns:1fr;max-width:420px;}}.lrn-world-card{display:flex;flex-direction:column;align-items:flex-start;background:#fff;border-radius:var(--lrn-radius);padding:1.75rem 1.5rem;box-shadow:var(--lrn-shadow);border:2.5px solid var(--lrn-border);text-decoration:none;color:var(--lrn-text);transition:transform 0.2s ease,box-shadow 0.2s ease,border-color 0.2s ease;position:relative;overflow:hidden;}.lrn-world-card--languages{border-color:transparent;background:linear-gradient(135deg,#ede9fe 0%,#e0f2fe 100%);}.lrn-world-card--languages:hover{transform:translateY(-3px) scale(1.015);box-shadow:var(--lrn-shadow-lg);}.lrn-world-card--languages:focus-visible{outline:3px solid var(--lrn-primary);outline-offset:3px;}.lrn-world-card--games{border-color:transparent;background:linear-gradient(135deg,#fff7ed 0%,#fef3c7 100%);}.lrn-world-card--games:hover{transform:translateY(-3px) scale(1.015);box-shadow:var(--lrn-shadow-lg);}.lrn-world-card--games:focus-visible{outline:3px solid var(--lrn-primary);outline-offset:3px;}.lrn-world-card--games:hover .lrn-world-card-cta{background:rgba(124,58,237,.22);}.lrn-world-card--stories{border-color:transparent;background:linear-gradient(135deg,#fdf4ff 0%,#f0fdf4 100%);}.lrn-world-card--stories:hover{transform:translateY(-3px) scale(1.015);box-shadow:var(--lrn-shadow-lg);}.lrn-world-card--stories:focus-visible{outline:3px solid #a78bfa;outline-offset:3px;}.lrn-world-card--stories:hover .lrn-world-card-cta{background:rgba(124,58,237,.22);}.lrn-world-card--typing{border-color:transparent;background:linear-gradient(135deg,#f0f9ff 0%,#fef3c7 100%);}.lrn-world-card--typing:hover{transform:translateY(-3px) scale(1.015);box-shadow:var(--lrn-shadow-lg);}.lrn-world-card--typing:focus-visible{outline:3px solid #38bdf8;outline-offset:3px;}.lrn-world-card--typing:hover .lrn-world-card-cta{background:rgba(56,189,248,.22);}.lrn-world-card--math{border-color:transparent;background:linear-gradient(135deg,#fff7ed 0%,#fef9c3 100%);}.lrn-world-card--math:hover{transform:translateY(-3px) scale(1.015);box-shadow:var(--lrn-shadow-lg);}.lrn-world-card--math:focus-visible{outline:3px solid #fb923c;outline-offset:3px;}.lrn-world-card--math:hover .lrn-world-card-cta{background:rgba(251,146,60,.22);}.lrn-world-card--coding{border-color:transparent;background:linear-gradient(135deg,#f0fdf4 0%,#ecfdf5 100%);}.lrn-world-card--coding:hover{transform:translateY(-3px) scale(1.015);box-shadow:var(--lrn-shadow-lg);}.lrn-world-card--coding:focus-visible{outline:3px solid #34d399;outline-offset:3px;}.lrn-world-card--coding:hover .lrn-world-card-cta{background:rgba(52,211,153,.22);}.lrn-guest-notice{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;background:#fefce8;border:1px solid #fde68a;border-radius:.75rem;padding:.6rem 1rem;font-size:.85rem;color:#92400e;font-weight:600;margin-bottom:.75rem;}.lrn-guest-notice-btn{display:inline-block;background:#f59e0b;color:#fff;font-weight:700;font-size:.8rem;padding:.3rem .9rem;border-radius:2rem;text-decoration:none;white-space:nowrap;transition:background .15s;}.lrn-guest-notice-btn:hover{background:#d97706;color:#fff;}.lrn-world-card--soon{opacity:0.65;cursor:default;border-style:dashed;}.lrn-world-card-icon{font-size:2.75rem;line-height:1;margin-bottom:0.75rem;filter:drop-shadow(0 2px 4px rgba(0,0,0,.1));}.lrn-world-card-title{font-size:1.1rem;font-weight:900;margin:0 0 0.4rem;color:var(--lrn-text);letter-spacing:-0.01em;}.lrn-world-card-desc{font-size:0.875rem;font-weight:600;color:var(--lrn-text-muted);margin:0 0 1.1rem;line-height:1.5;flex:1;}.lrn-world-card-cta{font-size:0.875rem;font-weight:900;color:var(--lrn-primary);background:rgba(124,58,237,.1);padding:0.4rem 1rem;border-radius:9999px;transition:background 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