:root{--text:#4b4658;--text-h:#16141c;--bg:#fff;--panel-bg:#f8f7fb;--border:#e2e1e8;--accent:#7554fb;--accent2:#2563eb;--accent-soft:#ede9fe;--line:#232129;--result-bg:#15803d;--result-text:#f0fdf4;--error-bg:#dc2626;--error-text:#fef2f2;--highlight-bg:#ffe08a;--highlight-text:#16141c;--final-bg:var(--result-bg);--final-text:var(--result-text);--gradient-primary:linear-gradient(135deg, var(--accent), var(--accent2));--gradient-soft:linear-gradient(135deg, #6d28d91f, #2563eb1a);--shadow-card:0 1px 2px #0f0c190a;--shadow-lg:0 20px 60px #4c1d9529;--radius-lg:20px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:17px/1.5 var(--sans);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial;--text:#b7b3c2;--text-h:#d7d6d7;--bg:#17151d;--panel-bg:#1f1d27;--border:#322f3b;--accent:#7554fb;--accent2:#60a5fa;--accent-soft:#2f2740;--line:#efeef4;--result-bg:#4ade80;--result-text:#0b1f13;--error-bg:#f87171;--error-text:#2b0a0a;--shadow-card:0 1px 2px #0003;--shadow-lg:0 20px 60px #0006}}*{box-sizing:border-box}body{margin:0}h1,h2{color:var(--text-h);margin:0;font-weight:600}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}.app-shell{flex-direction:column;max-width:1040px;min-height:100vh;margin:0 auto;padding:32px 20px 64px;display:flex}.app-shell>main{flex:1}.app-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:28px;display:flex}.app-header h1{letter-spacing:-.3px;font-size:26px}.app-logo{letter-spacing:-.3px;color:var(--text-h);align-items:center;gap:8px;font-size:20px;font-weight:700;text-decoration:none;display:inline-flex}.app-logo-mark{width:auto;height:70px}.lesson-select{color:var(--text);align-items:center;gap:8px;font-size:14px;display:flex}.lesson-select select{font:inherit;border:1px solid var(--border);background:var(--panel-bg);color:var(--text-h);border-radius:8px;padding:6px 10px}.app-footer{border-top:1px solid var(--border);color:var(--text);margin-top:48px;padding-top:40px;font-size:13px}.app-footer-columns{grid-template-columns:1.6fr repeat(4,1fr);gap:32px;display:grid}.app-footer-brand{flex-direction:column;gap:12px;padding-right:16px;display:flex}.app-footer-copy{color:var(--text-h);font-size:15px;font-weight:700}.app-footer-tagline{max-width:34ch;margin:0;line-height:1.55}.app-footer-column{flex-direction:column;gap:10px;display:flex}.app-footer-column h3{color:var(--text-h);letter-spacing:.06em;text-transform:uppercase;margin:0 0 2px;font-size:12px;font-weight:800}.app-footer-column a{color:var(--text);text-decoration:none}.app-footer-column a:hover{color:var(--accent)}.app-footer-socials{gap:12px;margin-top:4px;display:flex}.app-footer-icon{color:var(--text);opacity:.7;transition:opacity .15s;display:flex}.app-footer-icon:hover{opacity:1}.app-footer-bottom{border-top:1px solid var(--border);color:var(--text);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px 24px;margin-top:32px;padding-top:20px;padding-bottom:30px;font-size:12.5px;display:flex}.app-footer-legal{gap:18px;display:flex}.app-footer-legal a{color:var(--text);text-decoration:none}.app-footer-legal a:hover{color:var(--accent)}@media (width<=860px){.app-footer-columns{grid-template-columns:repeat(2,1fr)}.app-footer-brand{grid-column:1/-1;padding-right:0}}@media (width<=480px){.app-footer-columns{grid-template-columns:1fr}}.sums-hub{text-align:center;padding:24px 0 12px}.sums-hub h1{letter-spacing:-.5px;font-size:34px}.sums-hub-description{max-width:52ch;color:var(--text);margin:14px auto 28px}.sums-hub-form{gap:10px;max-width:560px;margin:0 auto;display:flex}.sums-hub-error{color:#e0575b;margin-top:10px;font-size:13px}.subject-card-grid{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;max-width:620px;margin:36px auto 0;display:grid}.subject-card{border:1px solid var(--border);background:var(--panel-bg);color:var(--text-h);border-radius:16px;flex-direction:column;align-items:center;gap:10px;padding:22px 16px;font-weight:600;text-decoration:none;transition:transform .15s,border-color .15s;display:flex}.subject-card:hover{border-color:var(--accent);transform:translateY(-2px)}.subject-card-icon{background:var(--accent-soft);width:44px;height:44px;color:var(--accent);border-radius:12px;justify-content:center;align-items:center;display:flex}.subject-page-header{text-align:center;margin-bottom:24px}.subject-page-header h1{font-size:28px}.subject-page-symbol{color:var(--accent)}.subject-page-header p{color:var(--text);margin:8px 0 0}.static-content-badge{background:var(--accent-soft);color:var(--accent2);border-radius:999px;margin-top:12px;padding:4px 12px;font-size:12.5px;font-weight:600;display:inline-block}.subject-page-layout{grid-template-columns:260px 1fr;align-items:start;gap:24px;display:grid}.subject-page-examples{flex-direction:column;max-height:calc(100vh - 40px);padding:18px;display:flex;position:sticky;top:20px}.subject-page-examples h2{text-transform:uppercase;letter-spacing:.06em;color:var(--text);flex-shrink:0;margin-bottom:10px;font-size:13px}.example-question-list{flex-direction:column;gap:8px;max-height:500px;padding-right:4px;display:flex;overflow-y:auto}.example-question-card{font-size:14px;font-family:var(--mono);text-align:left;border:1px solid var(--border);background:var(--panel-bg);color:var(--text-h);cursor:pointer;border-radius:10px;padding:10px 14px;transition:border-color .15s,background .15s}.example-question-card:hover:not(:disabled){border-color:var(--accent);background:var(--accent-soft)}.example-question-card:disabled{opacity:.5;cursor:not-allowed}.subject-page-main{flex-direction:column;gap:16px;display:flex}.subject-page-input-col{flex-direction:column;gap:8px;display:flex}.chat-composer{border:1.5px solid var(--border);background:var(--bg);border-radius:999px;align-items:center;gap:6px;padding:5px 5px 5px 18px;transition:border-color .15s;display:flex}.chat-composer:focus-within{border-color:var(--accent)}.chat-composer .ui-input{background:0 0;border:none;border-radius:0;flex:1;padding:10px 0}.chat-composer .ui-input:focus{border-color:#0000}.chat-send-btn{background:var(--gradient-primary);color:#fff;cursor:pointer;border:none;border-radius:999px;flex-shrink:0;justify-content:center;align-items:center;width:42px;height:42px;transition:opacity .15s,transform .1s;display:flex}.chat-send-btn:active{transform:scale(.94)}.chat-send-btn:disabled{opacity:.4;cursor:not-allowed}.chat-bubble-row{justify-content:flex-end;margin-bottom:10px;display:flex}.chat-bubble{border-radius:16px;max-width:80%;padding:10px 16px;font-size:14.5px;line-height:1.4}.chat-bubble-user{background:var(--gradient-primary);color:#fff;border-bottom-right-radius:4px}.subject-page-input-hint{color:var(--text);margin:0 2px;font-size:12.5px}.subject-page-viewer{min-height:200px;padding:8px}@media (width<=720px){.subject-page-layout{grid-template-columns:1fr}.subject-page-examples{max-height:280px;position:static}}.not-found-page{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:14px;min-height:70vh;padding:20px;display:flex}.landing-shell .app-footer{box-sizing:border-box;width:100%;max-width:1160px;margin:0 auto;padding-left:20px;padding-right:20px}.lesson-player{border:1px solid var(--border);background:var(--panel-bg);border-radius:16px;padding:24px}.lesson-header{justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:16px;display:flex}.lesson-summary{font-family:var(--mono);color:var(--text);font-size:14px}.progress-bar{background:var(--border);border-radius:999px;height:6px;margin-bottom:24px;overflow:hidden}.progress-bar-fill{background:var(--accent);border-radius:inherit;height:100%;transition:width .35s}.lesson-body{flex-direction:column;align-items:center;gap:16px;padding:20px 0 28px;display:flex;overflow-x:auto}.grid-canvas-wrap{position:relative}.grid-canvas{font-family:var(--mono);color:var(--text-h);gap:2px 6px;padding-top:1.6rem;font-size:1.7rem;font-weight:600;display:grid}.arrow-overlay{pointer-events:none;position:absolute;inset:0}.arrow-overlay-svg{width:100%;height:100%;overflow:visible}.arrow-overlay-path{fill:none;stroke-width:2.5px;stroke-linecap:round}.arrow-overlay-label{font-family:var(--sans);color:var(--accent);background:var(--accent-soft);white-space:nowrap;border-radius:6px;padding:1px 6px;font-size:.75rem;font-weight:600;position:absolute;transform:translate(-50%,-100%)}.calculation-chip-slot{justify-content:center;min-height:1.8rem;margin-bottom:4px;display:flex}.calculation-chip{max-width:100%;font-family:var(--mono);color:var(--accent);background:var(--accent-soft);white-space:nowrap;border-radius:999px;align-items:center;padding:3px 14px;font-size:.9rem;font-weight:600;display:inline-flex;overflow-x:auto}.lesson-complete-banner{text-align:center;color:var(--result-text);background:var(--result-bg);border-radius:12px;margin:4px 0;padding:10px 16px;font-weight:700}.formula-chip-slot{justify-content:center;margin-bottom:4px;display:flex}.formula-chip{font-family:var(--mono);color:var(--accent2);background:var(--accent-soft);border:1px dashed var(--accent2);border-radius:10px;align-items:center;gap:6px;padding:4px 14px;font-size:.88rem;font-weight:600;display:inline-flex}.topic-chip-slot{justify-content:center;margin-bottom:4px;display:flex}.topic-chip{text-transform:uppercase;letter-spacing:.03em;color:var(--text-h);background:var(--panel-bg);border:1px solid var(--border);border-radius:999px;align-items:center;gap:6px;padding:4px 14px;font-size:.82rem;font-weight:600;display:inline-flex}.hint-panel{color:var(--text);border:1px dashed var(--border);border-radius:10px;justify-content:center;align-items:center;gap:8px;margin-top:8px;padding:8px 14px;font-size:13.5px;display:flex}.verify-banner{text-align:center;font-weight:600;font-family:var(--mono);color:var(--result-text);background:var(--result-bg);border-radius:10px;justify-content:center;align-items:center;gap:8px;margin:4px 0;padding:8px 16px;display:flex}.box-overlay{pointer-events:none;position:absolute;inset:0}.box-overlay-rect{border:2px solid var(--accent);border-radius:8px;position:absolute}.cell{border-radius:8px;justify-content:center;align-items:center;min-width:2.2rem;min-height:2.4rem;transition:background-color .3s;display:flex;position:relative}.cell-operator{color:var(--accent);font-size:1.5rem}.cell-slot{border:1.5px dashed var(--border);background:var(--panel-bg)}.cell-result-filled{background:var(--result-bg);color:var(--result-text);border-color:#0000;padding:0 8px}.cell-brought-down{animation:.4s pop-in}.cell-value-wrap{justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:relative}.cell-value{display:inline-block;position:relative}.cell-value-long{white-space:nowrap;font-size:.55em}.cell-value-crossed{color:var(--text);opacity:.55}.cross-out-line{background:#e0575b;height:5px;position:absolute;top:50%;left:-10%;right:-10%;transform:rotate(-12deg)}.carry-badge,.borrow-badge{color:var(--accent);background:var(--accent-soft);border-radius:6px;padding:0 5px;font-size:.95rem;font-weight:700;line-height:1.4;position:absolute;top:-1.4rem}.borrow-badge{color:#e0575b;background:#e0575b1f}.cell-line{background:var(--line);border-radius:0;align-self:end;width:100%;min-width:0;height:3px;min-height:0;margin-bottom:4px}.cell-line-dynamic{align-self:center}.cell-bracket-top{background:var(--line);align-self:start;width:100%;height:2px}.cell-bracket-box{border-top:2px solid var(--line);border-left:2px solid var(--line);pointer-events:none;border-top-left-radius:4px;place-self:stretch stretch;margin-left:-3px}@keyframes pop-in{0%{opacity:0;transform:scale(.5)}to{opacity:1;transform:scale(1)}}.explanation-panel{text-align:left;background:linear-gradient(110deg, var(--accent-soft), var(--panel-bg));border:1px solid color-mix(in srgb, var(--accent) 35%, var(--border));border-left:4px solid var(--accent);min-height:3.2rem;color:var(--text-h);border-radius:12px;flex-direction:column;align-items:flex-start;gap:8px;padding:16px 18px;font-size:15px;display:flex}.explanation-panel p{margin:0;font-weight:700;line-height:1.55}.explanation-panel-label{width:100%;color:var(--accent2);letter-spacing:.08em;text-transform:uppercase;align-items:center;gap:7px;font-size:11px;font-weight:800;display:flex}.speak-button{border:1px solid color-mix(in srgb, var(--accent) 35%, var(--border));background:var(--panel-bg);width:22px;height:22px;color:var(--accent2);cursor:pointer;border-radius:999px;flex:none;justify-content:center;align-items:center;margin-left:auto;padding:0;transition:border-color .15s,color .15s;display:inline-flex}.speak-button:hover{border-color:var(--accent);color:var(--accent)}.speak-button.is-speaking{color:var(--accent);border-color:var(--accent);animation:1.1s ease-in-out infinite speak-button-pulse}@keyframes speak-button-pulse{0%,to{box-shadow:0 0 0 0 color-mix(in srgb, var(--accent) 35%, transparent)}50%{box-shadow:0 0 0 4px color-mix(in srgb, var(--accent) 0%, transparent)}}.explanation-placeholder{color:var(--text);font-style:italic;font-weight:500!important}.step-indicator{flex-direction:column;align-items:center;gap:8px;margin:20px 0 8px;display:flex}.step-indicator-label{color:var(--text);font-size:13px}.step-dots{flex-wrap:wrap;justify-content:center;gap:6px;display:flex}.step-dot{background:var(--border);cursor:pointer;border:none;border-radius:999px;width:9px;height:9px;padding:0}.step-dot-done{background:var(--accent);opacity:.5}.step-dot-active{opacity:1;transform:scale(1.3)}.controls{justify-content:center;gap:10px;margin-top:12px;display:flex}.btn{font:inherit;cursor:pointer;border:1px solid #0000;border-radius:999px;align-items:center;gap:8px;padding:10px 20px;font-size:14px;font-weight:600;text-decoration:none;transition:opacity .15s,transform .1s;display:inline-flex}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff}.btn-secondary{background:var(--bg);border-color:var(--border);color:var(--text-h)}.btn-ghost{border-color:var(--border);color:var(--text);background:0 0}.ui-card{border:1px solid var(--border);background:var(--panel-bg);border-radius:16px;box-shadow:0 1px 2px #0f0c190a}.ui-input{font:inherit;border:1.5px solid var(--border);background:var(--bg);width:100%;min-width:0;color:var(--text-h);border-radius:12px;flex:1;padding:14px 18px}.ui-input:focus{border-color:var(--accent);outline:none}.ui-select{cursor:pointer}.ui-skeleton{background:linear-gradient(90deg, var(--border) 25%, var(--panel-bg) 50%, var(--border) 75%);background-size:200% 100%;border-radius:8px;animation:1.4s ease-in-out infinite skeleton-shimmer}@keyframes skeleton-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.page-loader{justify-content:center;align-items:center;width:100%;min-height:40vh;display:flex}.page-loader-dot{background:var(--accent);border-radius:50%;width:10px;height:10px;animation:1s ease-in-out infinite page-loader-pulse}@keyframes page-loader-pulse{0%,to{opacity:.3;transform:scale(.85)}50%{opacity:1;transform:scale(1.15)}}.ui-lesson-skeleton{flex-direction:column;align-items:center;gap:16px;padding:32px 0;display:flex}.ui-skeleton-title{width:55%;height:1.2rem}.ui-skeleton-grid{border-radius:14px;width:70%;height:8rem}.ui-skeleton-line{width:40%;height:.9rem}.ui-error-state,.ui-empty-state{text-align:center;color:var(--text);flex-direction:column;align-items:center;gap:10px;padding:36px 20px;display:flex}.ui-error-state{color:#e0575b}.ui-error-state p{color:var(--text);margin:0}.ui-empty-state h3{color:var(--text-h);margin:0;font-size:17px}.ui-empty-state p{max-width:32ch;margin:0}.btn-lg{padding:14px 28px;font-size:16px}.btn-sm{padding:7px 16px;font-size:13px}.landing-shell{flex-direction:column;min-height:100vh;display:flex;overflow-x:clip}.site-header{z-index:20;background:color-mix(in srgb, var(--bg) 85%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:20px;padding:16px max(20px,50% - 580px);display:flex;position:sticky;top:0}.site-nav{gap:28px;font-size:14px;font-weight:500;display:flex}.site-nav a{color:var(--text);text-decoration:none}.site-nav a:hover{color:var(--text-h)}.site-header-actions{align-items:center;gap:10px;display:flex}.nav-toggle{border:1px solid var(--border);background:var(--bg);width:38px;height:38px;color:var(--text-h);cursor:pointer;border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;display:none}.nav-toggle:hover{border-color:var(--accent);color:var(--accent)}.nav-backdrop{z-index:29;opacity:0;pointer-events:none;background:#0f0c1973;transition:opacity .2s;position:fixed;inset:0}.nav-backdrop-visible{opacity:1;pointer-events:auto}.mobile-nav-drawer{display:none}@media (width<=720px){.site-nav{display:none}.site-header-actions{z-index:31;position:relative}.nav-toggle{display:flex}.mobile-nav-drawer{z-index:30;background:var(--bg);border-left:1px solid var(--border);width:min(300px,82vw);height:100vh;box-shadow:var(--shadow-lg);flex-direction:column;gap:2px;padding:92px 22px 24px;transition:transform .25s;display:flex;position:fixed;top:0;right:0;overflow-y:auto;transform:translate(100%)}.mobile-nav-drawer-open{transform:translate(0)}.mobile-nav-drawer a{border-bottom:1px solid var(--border);color:var(--text-h);padding:14px 4px;font-size:15.5px;font-weight:600;text-decoration:none}.mobile-nav-drawer a:hover{color:var(--accent)}}.section{padding:104px 20px}.section-alt{background:var(--panel-bg)}.section-inner{max-width:1160px;margin:0 auto}.section-inner-narrow{max-width:720px}.section-title{letter-spacing:-.8px;text-align:center;max-width:40ch;margin:0 auto;font-size:clamp(30px,3vw,42px)}.section-subtitle{text-align:center;color:var(--text);max-width:52ch;margin:14px auto 52px;line-height:1.65}.hero-section{isolation:isolate;background:radial-gradient(circle at 72% 39%, color-mix(in srgb, var(--accent) 20%, transparent), transparent 25%), radial-gradient(circle at 7% 85%, color-mix(in srgb, var(--accent2) 13%, transparent), transparent 27%);align-items:center;min-height:min(760px,100svh - 84px);padding:76px max(20px,50% - 580px) 108px;display:flex;position:relative;overflow:hidden}.hero-bg-glow{opacity:.42;filter:blur(3px);pointer-events:none;z-index:0;width:480px;position:absolute;top:-120px;right:-80px}.hero-grid{z-index:-1;opacity:.42;background-image:linear-gradient(color-mix(in srgb, var(--accent) 13%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in srgb, var(--accent) 13%, transparent) 1px, transparent 1px);background-size:48px 48px;position:absolute;inset:0;-webkit-mask-image:linear-gradient(90deg,#000 0%,#0000 82%);mask-image:linear-gradient(90deg,#000 0%,#0000 82%)}.hero-orbit{z-index:-1;border:1px solid color-mix(in srgb, var(--accent) 28%, transparent);pointer-events:none;border-radius:999px;position:absolute}.hero-orbit-one{width:560px;height:560px;top:-185px;right:-160px}.hero-orbit-two{border-style:dashed;width:370px;height:370px;animation:32s linear infinite hero-orbit-spin;top:-88px;right:-35px}@keyframes hero-orbit-spin{to{transform:rotate(360deg)}}@media (prefers-color-scheme:dark){.hero-bg-glow{opacity:.5}}.hero-content{z-index:1;grid-template-columns:1fr 1fr;align-items:center;gap:clamp(40px,6vw,88px);display:grid;position:relative}@media (width<=900px){.hero-content{grid-template-columns:1fr}}.hero-eyebrow{color:var(--accent2);background:var(--accent-soft);border:1px solid color-mix(in srgb, var(--accent) 16%, var(--border));border-radius:999px;align-items:center;gap:6px;margin-bottom:18px;padding:6px 14px;font-size:13px;font-weight:600;display:inline-flex}.hero-copy h1{letter-spacing:-2.4px;max-width:11ch;margin-bottom:22px;font-size:clamp(44px,5.3vw,68px);line-height:1.02}.hero-highlight{background:var(--gradient-primary);color:#0000;-webkit-background-clip:text;background-clip:text}.hero-copy p{color:var(--text);max-width:46ch;margin-bottom:32px;font-size:17px;line-height:1.65}.hero-cta-row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.hero-text-link{color:var(--text-h);align-items:center;gap:5px;padding:12px 4px;font-weight:700;text-decoration:none;display:inline-flex}.hero-text-link:hover{color:var(--accent)}.hero-proof{color:var(--text);flex-wrap:wrap;gap:10px 18px;margin:28px 0 0;padding:0;font-size:13px;list-style:none;display:flex}.hero-proof li{align-items:center;gap:6px;display:inline-flex}.hero-proof svg{color:var(--accent)}.hero-demo{position:relative}.hero-visual{perspective:1000px;transform-style:preserve-3d;position:relative}.hero-demo-frame{border-radius:var(--radius-lg);border:1px solid color-mix(in srgb, var(--accent) 24%, var(--border));background:var(--bg);box-shadow:0 30px 70px color-mix(in srgb, var(--accent) 20%, transparent), var(--shadow-lg);padding:24px;position:relative}.hero-math-preview{background:linear-gradient(150deg, color-mix(in srgb, var(--accent-soft) 58%, var(--bg)), var(--bg) 42%), var(--bg);min-height:445px;padding:18px;overflow:hidden}.hero-preview-header,.hero-preview-footer,.hero-preview-status,.hero-preview-footer>span:last-child{align-items:center;display:flex}.hero-preview-header{color:var(--text);justify-content:space-between;font-size:11px;font-weight:700}.hero-preview-status{color:var(--accent);gap:6px}.hero-preview-status>span{background:#43bc7a;border-radius:50%;width:7px;height:7px;box-shadow:0 0 0 4px #43bc7a21}.hero-preview-step{background:color-mix(in srgb, var(--accent-soft) 70%, transparent);border-radius:999px;padding:5px 8px}.hero-question-card{border:1px solid color-mix(in srgb, var(--accent) 13%, var(--border));background:color-mix(in srgb, var(--bg) 75%, transparent);border-radius:12px;flex-direction:column;gap:4px;margin:18px 0 10px;padding:13px 15px;display:flex}.hero-question-card span{color:var(--text);font-size:12px}.hero-question-card strong{color:var(--text-h);font-family:var(--mono);letter-spacing:.02em;font-size:19px}.hero-sum-board{background:color-mix(in srgb, var(--bg) 87%, transparent);width:230px;box-shadow:inset 0 0 0 1px color-mix(in srgb, var(--accent) 10%, var(--border));font-family:var(--mono);border-radius:18px;margin:10px auto 16px;padding:13px 12px 16px;position:relative;overflow:hidden}.hero-carry-row,.hero-sum-row{grid-template-columns:repeat(3,1fr);justify-items:center;display:grid}.hero-carry-row{min-height:22px;color:var(--accent2);margin-left:39px;font-size:15px;font-weight:800}.hero-sum-row{color:var(--text-h);margin-left:39px;font-size:29px;font-weight:800;line-height:1.27}.hero-sum-row-add{grid-template-columns:26px repeat(3,1fr);margin-left:0}.hero-sum-row-add>span:first-child{color:var(--accent)}.hero-sum-rule{background:var(--text-h);opacity:.78;border-radius:99px;height:2px;margin:7px 0 7px 38px}.hero-sum-result{color:var(--accent)}.hero-sum-highlight{background:color-mix(in srgb, var(--accent) 11%, transparent);pointer-events:none;border-radius:12px;width:48px;height:102px;position:absolute;top:38px;right:14px}.hero-preview-tip{background:var(--gradient-primary);color:#fff;border-radius:12px;align-items:center;gap:8px;margin:0 5px;padding:11px 12px;font-size:12px;font-weight:650;line-height:1.35;display:flex}.hero-preview-tip svg{flex:none}.hero-preview-footer{color:var(--text);justify-content:space-between;margin:17px 5px 0;font-size:11px;font-weight:700}.hero-progress-dots{gap:5px}.hero-progress-dots i{background:var(--border);border-radius:99px;width:6px;height:6px;display:block}.hero-progress-dots i:nth-child(2){background:var(--accent);width:18px}.hero-preview-footer>span:last-child{color:var(--accent);gap:5px}.math-teaching-demo{position:relative}.math-teaching-card{color:#f8f7ff;background:radial-gradient(circle at 82% 9%,#7557de57,#0000 30%),radial-gradient(circle at 10% 92%,#2d7cde30,#0000 29%),linear-gradient(145deg,#17162d,#0e1020 80%);border:1px solid #b396ff47;border-radius:26px;min-height:465px;padding:21px;overflow:hidden;box-shadow:0 35px 80px #150d3e54,inset 0 1px #ffffff17}.math-demo-topline{color:#cfc9e8;letter-spacing:.025em;align-items:center;gap:7px;font-size:11px;font-weight:750;display:flex}.math-demo-topline>span:last-child{color:#aaa4c9;border:1px solid #ffffff1c;border-radius:999px;margin-left:auto;padding:5px 8px;font-size:10px}.math-demo-live-dot{background:#78d9ab;border-radius:50%;width:7px;height:7px;box-shadow:0 0 0 4px #78d9ab1f}.math-demo-title{color:#fff;letter-spacing:-.025em;margin:18px 0 13px;font-size:18px;font-weight:700}.math-demo-workspace{background:#0708147a;border:1px solid #ded7ff1f;border-radius:19px;width:min(255px,88%);margin:0 auto;padding:15px 17px 18px;transition:opacity .35s,transform .35s;box-shadow:inset 0 1px #ffffff0b}.math-demo-workspace-reset{opacity:.12;transform:translateY(-4px)}.math-demo-carry-row,.math-demo-row{grid-template-columns:repeat(3,1fr);justify-items:center;display:grid}.math-demo-carry-row{color:#e0beff;min-height:25px;font:800 16px/1 var(--mono);margin-left:36px}.math-demo-row{color:#fff;font:800 34px/1.2 var(--mono);margin-left:36px}.math-demo-add-row{grid-template-columns:28px repeat(3,1fr);margin-left:0}.math-demo-digit{z-index:1;border-radius:11px;justify-content:center;align-items:center;width:40px;height:43px;display:inline-flex;position:relative}.math-demo-digit-active{color:#fff;background:#a96dff38;outline:1px solid #caa3ff85}.math-demo-plus{color:#a78bfa;align-self:center;font-weight:600}.math-demo-line{background:linear-gradient(90deg,#9f85f2,#e0d8ff);border-radius:99px;height:2px;margin:8px 0 9px 36px}.math-demo-answer-row{color:#9f8aff}.math-demo-answer-digit{color:#b4a2ff;text-shadow:0 0 22px #9f8aff94}.math-demo-answer-placeholder{opacity:0}.math-demo-guidance{background:#fff1;border-radius:13px;min-height:70px;margin:15px 3px 0;padding:11px 13px}.math-demo-calculation{color:#f6edff;font:800 17px/1.25 var(--mono);letter-spacing:.015em;display:block}.math-demo-calculation-empty{color:#b8b1ce;font:650 13px/1.4 inherit}.math-demo-explanation{color:#c8c1df;min-height:17px;margin-top:5px;font-size:12px;line-height:1.4;display:block}.math-demo-final{color:#86efb5;min-height:33px;font:750 12px/1.2 var(--mono);opacity:0;background:#53cb8f21;border-radius:10px;justify-content:center;align-items:center;gap:7px;margin-top:12px;transition:opacity .35s,transform .35s;display:flex;transform:translateY(8px)scale(.98)}.math-demo-final-visible{opacity:1;transform:translateY(0)scale(1)}@media (width<=560px){.math-teaching-card{border-radius:21px;min-height:430px;padding:17px}.math-demo-title{margin-top:14px}.math-demo-workspace{width:min(245px,91%)}.math-demo-row{font-size:30px}}.hero-floating-chip,.hero-solution-note{z-index:2;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid #ffffff94;position:absolute;box-shadow:0 14px 32px #1e1a4c2e}.hero-floating-chip{background:color-mix(in srgb, var(--bg) 82%, transparent);color:var(--accent);font-family:var(--mono);border-radius:10px;padding:9px 13px;font-size:13px;font-weight:800}.hero-floating-chip-top{top:-22px;right:28px;transform:rotate(5deg)}.hero-floating-chip-bottom{bottom:28px;left:-24px;transform:rotate(-5deg)}.hero-solution-note{background:var(--gradient-primary);color:#fff;border-radius:999px;align-items:center;gap:7px;padding:10px 13px;font-size:12px;font-weight:700;display:inline-flex;bottom:-18px;right:-18px}@media (width<=900px){.hero-bg-glow{display:none}.hero-section{min-height:auto;padding-top:64px}.hero-copy h1{max-width:13ch}.hero-visual{width:100%;max-width:640px;margin:8px auto 0}}@media (width<=560px){.hero-section{padding-bottom:72px}.hero-copy h1{letter-spacing:-1.5px;font-size:42px}.hero-floating-chip-top{right:12px}.hero-floating-chip-bottom{bottom:16px;left:8px}.hero-solution-note{bottom:-14px;right:8px}.hero-demo-frame{padding:18px}}@media (prefers-reduced-motion:reduce){.hero-orbit-two{animation:none}}.video-section{padding-top:0}.video-layout{grid-template-columns:1.2fr 1fr;align-items:center;gap:48px;display:grid}.video-frame{aspect-ratio:16/9;border-radius:var(--radius-lg);border:1px solid var(--border);width:100%;box-shadow:var(--shadow-lg);background:var(--panel-bg);position:relative;overflow:hidden}.video-frame iframe{border:none;width:100%;height:100%;position:absolute;inset:0}.video-eyebrow{color:var(--accent2);background:var(--accent-soft);border-radius:999px;align-items:center;gap:6px;margin-bottom:16px;padding:6px 14px;font-size:13px;font-weight:600;display:inline-flex}.video-copy h2{letter-spacing:-.4px;margin:0 0 12px;font-size:26px}.video-copy p{color:var(--text);margin:0 0 18px;font-size:14.5px;line-height:1.65}.video-points{flex-direction:column;gap:10px;margin:0 0 24px;padding:0;list-style:none;display:flex}.video-points li{color:var(--text-h);padding-left:22px;font-size:14px;line-height:1.5;position:relative}.video-points li:before{content:"";background:var(--gradient-primary);border-radius:999px;width:8px;height:8px;position:absolute;top:7px;left:0}.video-cta{background:var(--gradient-primary);color:#fff;border-radius:999px;align-items:center;gap:6px;padding:11px 20px;font-size:14px;font-weight:700;text-decoration:none;display:inline-flex}@media (width<=900px){.video-layout{grid-template-columns:1fr;gap:28px}}.bento-grid{grid-template-columns:repeat(4,1fr);grid-auto-flow:dense;gap:16px;display:grid}.bento-tile{border-radius:18px;flex-direction:column;align-items:flex-start;gap:10px;padding:22px;display:flex}.bento-tile-lg{grid-column:span 2}.bento-tile-default{border:1px solid var(--border);background:var(--bg);box-shadow:var(--shadow-card)}.bento-tile-accent{background:var(--accent-soft);border:1px solid #0000}.bento-tile-dark{background:var(--gradient-primary);box-shadow:var(--shadow-lg);border:1px solid #0000}.bento-tile-icon{background:var(--gradient-soft);width:40px;height:40px;color:var(--accent);border-radius:12px;justify-content:center;align-items:center;display:inline-flex}.bento-tile-dark .bento-tile-icon{color:#fff;background:#ffffff2e}.bento-tile-lg .bento-tile-icon{border-radius:14px;width:48px;height:48px}.bento-tile h3{color:var(--text-h);margin:0;font-size:16px}.bento-tile-lg h3{font-size:19px}.bento-tile-dark h3,.bento-tile-dark p{color:#fff}.bento-tile p{color:var(--text);margin:0;font-size:14.5px}.bento-tile-dark p{opacity:.9}@media (width<=900px){.bento-grid{grid-template-columns:repeat(2,1fr)}}@media (width<=560px){.bento-grid{grid-template-columns:1fr}.bento-tile-lg{grid-column:span 1}}.how-it-works-row{grid-template-columns:repeat(4,1fr);gap:12px;display:grid}@media (width<=900px){.how-it-works-row{grid-template-columns:1fr;gap:28px}}.how-it-works-step{text-align:center;padding:0 12px;position:relative}.how-it-works-number{color:var(--accent);margin-bottom:10px;font-size:12px;font-weight:700;display:inline-block}.how-it-works-icon{background:var(--gradient-primary);color:#fff;border-radius:16px;justify-content:center;align-items:center;width:52px;height:52px;margin:0 auto 14px;display:flex}.how-it-works-step h3{color:var(--text-h);margin:0 0 6px;font-size:15px}.how-it-works-step p{color:var(--text);margin:0;font-size:13.5px}.how-it-works-connector{background:var(--border);height:1.5px;display:block;position:absolute;top:26px;left:calc(50% + 40px);right:calc(40px - 50%)}@media (width<=900px){.how-it-works-connector{display:none}}.demo-switcher{flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:28px;display:flex}.demo-switcher-btn{font:inherit;border:1px solid var(--border);background:var(--bg);color:var(--text);cursor:pointer;border-radius:999px;padding:8px 18px;font-size:13.5px;font-weight:600;transition:all .15s}.demo-switcher-btn:hover{border-color:var(--accent)}.demo-switcher-btn-active{background:var(--gradient-primary);color:#fff;border-color:#0000}.demo-switcher-btn-more{color:var(--accent);border-style:dashed}.demo-switcher-btn-more:hover{background:var(--accent-soft,var(--bg))}.demo-frame{max-width:640px;margin:0 auto}.demo-frame .lesson-player{border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg);box-shadow:var(--shadow-card);padding:24px}.faq-list{border-top:1px solid var(--border)}.faq-item{border-bottom:1px solid var(--border)}.faq-question{width:100%;font:inherit;color:var(--text-h);text-align:left;cursor:pointer;background:0 0;border:none;justify-content:space-between;align-items:center;gap:12px;padding:20px 4px;font-size:15.5px;font-weight:600;display:flex}.faq-chevron{color:var(--text);flex-shrink:0;transition:transform .2s}.faq-chevron-open{transform:rotate(180deg)}.faq-answer-wrap{overflow:hidden}.faq-answer{color:var(--text);max-width:62ch;margin:0 4px 20px;font-size:14.5px}@media (width<=520px){.sums-hub-form,.subject-page-input{flex-direction:column}.hero-copy h1{font-size:32px}.section-title{font-size:24px}}.fraction-canvas-wrap{padding:20px 0 28px;position:relative}.fraction-compare-banner{text-align:center;color:var(--accent);background:var(--accent-soft);border-radius:999px;width:fit-content;margin:0 auto 16px;padding:6px 18px;font-weight:600}.fraction-canvas{flex-wrap:wrap;justify-content:center;align-items:flex-end;gap:28px;padding:4px 8px;display:flex}.fraction-shape-slot{align-items:flex-end;gap:10px;display:flex}.fraction-equiv-glyph{color:var(--text);padding-bottom:28px;font-size:1.8rem;font-weight:700}.fraction-shape-inner{flex-direction:column;align-items:center;gap:10px;display:flex}.fraction-shape-caption{font-family:var(--mono);color:var(--text-h);flex-direction:column;align-items:center;font-size:1.1rem;font-weight:700;line-height:1.15;display:flex}.fraction-caption-slash{display:none}.fraction-shape-caption span:first-child{border-bottom:2px solid var(--text-h);padding:0 4px 2px}.fraction-shape-caption span:last-child{padding:2px 4px 0}.fraction-caption-highlight{border-radius:4px;padding:0 3px}.fraction-wedge{width:120px;height:120px}.fraction-wedge-slice{fill:var(--bg);stroke:var(--border);stroke-width:1.5px}.fraction-wedge-slice-shaded{fill:var(--accent);stroke:var(--bg);stroke-width:1.5px}.fraction-wedge-pizza .fraction-wedge-slice{fill:#fdf1d6;stroke:#d9a441}.fraction-wedge-pizza .fraction-wedge-slice-shaded{fill:#f2b544;stroke:#d9a441}.fraction-bar{border:1.5px solid var(--border);border-radius:8px;width:200px;height:46px;display:flex;overflow:hidden}.fraction-bar-segment{background:var(--bg);border-right:1.5px solid var(--border);flex:1}.fraction-bar-segment:last-child{border-right:none}.fraction-bar-segment-shaded{background:var(--accent)}.fraction-unit-grid{border:1.5px solid var(--border);border-radius:8px;gap:3px;width:130px;padding:6px;display:grid}.fraction-unit-cell{aspect-ratio:1;background:var(--bg);border:1px solid var(--border);border-radius:3px}.fraction-unit-cell-shaded{background:var(--accent)}.fraction-unit-grid-chocolate{background:#5c3a21;border-color:#3e2716}.fraction-unit-grid-chocolate .fraction-unit-cell{background:#7a5233;border-color:#3e2716}.fraction-unit-grid-chocolate .fraction-unit-cell-shaded{background:#c99a5b}.fraction-number-line{width:220px;height:48px;margin-top:12px;position:relative}.fraction-number-line-track{background:var(--border);border-radius:999px;width:100%;height:4px;display:flex;overflow:hidden}.fraction-number-line-segment{flex:1}.fraction-number-line-segment-shaded{background:var(--accent)}.fraction-number-line-tick{flex-direction:column;align-items:center;gap:4px;display:flex;position:absolute;top:-4px;transform:translate(-50%)}.fraction-number-line-dot{background:var(--text-h);border-radius:999px;width:10px;height:10px}.fraction-number-line-dot-highlighted{width:14px;height:14px;box-shadow:0 0 0 3px var(--accent-soft)}.fraction-number-line-value{font-family:var(--mono);color:var(--text);font-size:.75rem}.topics-list{grid-template-rows:repeat(5,auto);grid-auto-flow:column;column-gap:40px;display:grid}.topic-row{border-bottom:1px solid var(--border);color:inherit;align-items:center;gap:14px;padding:16px 4px;text-decoration:none;transition:background-color .15s;display:flex}.topic-row:hover{background:var(--bg)}.topic-row-index{font-family:var(--mono);color:var(--accent2);flex-shrink:0;width:20px;font-size:12px;font-weight:700}.topic-row-icon{background:var(--gradient-soft);width:32px;height:32px;color:var(--accent);border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;display:flex}.topic-row-text{flex:1;min-width:0}.topic-row-text h3{color:var(--text-h);margin:0 0 3px;font-size:15px}.topic-row-text p{color:var(--text);margin:0;font-size:13px;line-height:1.5}.topic-row-arrow{color:var(--text);opacity:0;flex-shrink:0;transition:opacity .15s,transform .15s;transform:translate(-4px)}.topic-row:hover .topic-row-arrow{opacity:1;color:var(--accent);transform:translate(0)}@media (width<=900px){.topics-list{grid-template-rows:none;grid-template-columns:1fr;grid-auto-flow:row}}.topics-more{text-align:center;color:var(--text);margin:32px 0 0;font-size:14px}.topics-more a{color:var(--accent);align-items:center;gap:5px;font-weight:700;text-decoration:none;display:inline-flex}.topics-more a:hover{text-decoration:underline}.solve-split{grid-template-columns:320px 1fr;align-items:start;gap:48px;display:grid}.solve-intro{position:sticky;top:100px}.solve-intro-icon{background:var(--gradient-primary);color:#fff;border-radius:14px;justify-content:center;align-items:center;width:44px;height:44px;margin-bottom:18px;display:flex}.solve-intro h2{letter-spacing:-.4px;margin:0 0 12px;font-size:26px}.solve-intro p{color:var(--text);margin:0 0 18px;font-size:14.5px;line-height:1.65}.solve-intro-link{color:var(--accent);align-items:center;gap:5px;font-size:14px;font-weight:700;text-decoration:none;display:inline-flex}.solve-intro-link:hover{text-decoration:underline}.solve-rows{border:1px solid var(--border);border-radius:18px;overflow:hidden}.solve-row{color:inherit;align-items:center;gap:16px;padding:18px 20px;text-decoration:none;transition:background-color .15s;display:flex}.solve-row:nth-child(2n){background:var(--panel-bg)}.solve-row:hover{background:var(--accent-soft)}.solve-row-badge{border:1.5px solid var(--accent);width:30px;height:30px;color:var(--accent);font-family:var(--mono);border-radius:999px;flex-shrink:0;justify-content:center;align-items:center;font-size:13px;font-weight:700;display:flex}.solve-row-text{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.solve-row-text strong{color:var(--text-h);font-size:15px}.solve-row-text span{color:var(--text);font-size:13px;line-height:1.5}.solve-row-arrow{color:var(--text);flex-shrink:0}@media (width<=900px){.solve-split{grid-template-columns:1fr;gap:28px}.solve-intro{position:static}}.worksheet-stub-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;display:grid}.worksheet-stub{border:1px solid var(--border);background:var(--bg);color:inherit;box-shadow:var(--shadow-card);border-radius:4px 14px 14px;flex-direction:column;gap:8px;padding:30px 20px 20px;text-decoration:none;transition:transform .15s,border-color .15s;display:flex;position:relative}.worksheet-stub:hover{border-color:var(--accent);transform:translateY(-2px)}.worksheet-stub-tab{background:var(--gradient-primary);color:#fff;letter-spacing:.04em;border-radius:4px 12px 12px 0;align-items:center;gap:5px;padding:5px 12px;font-size:11px;font-weight:800;display:inline-flex;position:absolute;top:0;left:0}.worksheet-stub-lines{background:repeating-linear-gradient(to bottom, var(--border) 0, var(--border) 1.5px, transparent 1.5px, transparent 7px);opacity:.7;border-radius:8px;width:46px;height:46px;position:absolute;top:30px;right:18px}.worksheet-stub h3{color:var(--text-h);max-width:75%;margin:6px 0 0;font-size:16px}.worksheet-stub p{color:var(--text);margin:0;font-size:14px}.worksheet-stub-cta{color:var(--accent);align-items:center;gap:5px;margin-top:8px;font-size:13px;font-weight:700;display:inline-flex}.how-it-works-examples{flex-wrap:wrap;justify-content:center;gap:6px;margin-top:4px;display:flex}.how-it-works-example-chip{font-family:var(--mono);color:var(--accent);background:var(--accent-soft);border-radius:999px;padding:3px 10px;font-size:12px}.audience-grid{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}.audience-tag{color:var(--text-h);background:var(--bg);border:1px solid var(--border);border-radius:999px;align-items:center;gap:7px;padding:8px 16px;font-size:14px;font-weight:500;display:inline-flex}.audience-tag svg{color:var(--accent)}.benefits-grid{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px 24px;display:grid}.benefit-item{color:var(--text-h);align-items:center;gap:10px;font-size:15px;display:flex}.benefit-item svg{color:var(--result-bg);flex-shrink:0}.final-cta-section{padding-bottom:96px}.final-cta-card{text-align:center;background:var(--gradient-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:56px 32px}.final-cta-card h2{color:#fff;letter-spacing:-.4px;margin-bottom:14px;font-size:30px}.final-cta-card p{color:#ffffffe6;max-width:48ch;margin:0 auto 28px}.final-cta-card .btn-primary{color:var(--accent);background:#fff}.ui-textarea{resize:vertical;min-height:100px;font-family:inherit;line-height:1.5}.contact-form{flex-direction:column;gap:18px;display:flex}.contact-field{flex-direction:column;gap:6px;display:flex}.contact-field label{color:var(--text-h);font-size:13.5px;font-weight:600}.contact-field-error{color:#e0575b;font-size:12.5px}.contact-submit{align-self:flex-start}.contact-success{text-align:center;color:var(--result-bg);flex-direction:column;align-items:center;gap:10px;padding:40px 20px;display:flex}.contact-success h3{color:var(--text-h);margin:0;font-size:18px}.contact-success p{color:var(--text);margin:0 0 8px}.ratio-canvas{flex-wrap:wrap;justify-content:center;align-items:flex-start;gap:24px;padding:16px 8px;display:flex}.ratio-term-inner{background:var(--bg-alt,var(--bg));border:1.5px solid var(--border);border-radius:14px;flex-direction:column;align-items:center;gap:10px;padding:14px 18px;display:flex}.ratio-term-label{color:var(--text-h);font-size:.95rem;font-weight:700}.ratio-term-units{flex-wrap:wrap;justify-content:center;gap:6px;max-width:160px;display:flex}.ratio-term-unit{background:var(--accent);border-radius:50%;width:16px;height:16px}.ratio-term-badge{font-family:var(--mono);color:#fff;background:var(--accent);border-radius:10px;padding:6px 14px;font-size:1.2rem;font-weight:700}.factor-tree-canvas{box-sizing:border-box;background:var(--panel-bg);border-radius:16px;justify-content:center;width:100%;max-width:100%;padding:18px 16px;display:flex;position:relative;overflow-x:auto}.factor-tree-lines{pointer-events:none;width:100%;height:100%;position:absolute;inset:0;overflow:visible}.factor-tree-lines line{stroke:var(--line);stroke-width:2px;opacity:.55}.factor-tree-node-wrap{flex-direction:column;align-items:center;display:flex;position:relative}.factor-tree-node{border:1.5px solid var(--border);background:var(--bg);min-width:38px;height:38px;font-family:var(--mono);color:var(--text-h);border-radius:50%;justify-content:center;align-items:center;padding:0 8px;font-size:.95rem;font-weight:700;display:inline-flex;box-shadow:0 1px 3px #0f0c1912}.factor-tree-node-prime{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}.factor-tree-children{flex-direction:column;align-items:center;padding-top:22px;display:flex}.factor-tree-children-row{gap:22px;display:flex}.geometry-canvas{background:radial-gradient(circle at 50% 45%, var(--accent-soft), transparent 68%);border-radius:14px;place-items:center;min-height:250px;padding:12px;display:grid}.geometry-canvas svg{width:min(100%,430px);height:auto;overflow:visible}.completion-confetti{z-index:100;pointer-events:none;width:0;height:0;position:fixed;top:40%;left:50%}.completion-confetti-piece{border-radius:2px;width:9px;height:15px;position:absolute;box-shadow:0 1px 4px #0f0c191f}.subject-page{padding:4px 0 12px}.subject-page-header{text-align:left;max-width:720px;margin:0 auto 28px}.subject-page-back{color:var(--text);align-items:center;gap:7px;font-size:13px;font-weight:600;text-decoration:none;display:inline-flex}.subject-page-back:hover{color:var(--accent)}.subject-page-heading{align-items:center;gap:14px;margin-top:18px;display:flex}.subject-page-header h1{letter-spacing:-.045em;font-size:clamp(28px,4vw,38px);line-height:1.05}.subject-page-symbol{background:var(--gradient-primary);color:#fff;width:52px;height:52px;font-family:var(--mono);border-radius:16px;flex:0 0 52px;place-items:center;font-size:27px;font-weight:700;display:grid;box-shadow:0 8px 22px #7554fb3d}.subject-page-kicker{color:var(--accent2);letter-spacing:.1em;text-transform:uppercase;margin:0 0 4px;font-size:11px;font-weight:800}.subject-page-intro{max-width:58ch;color:var(--text);margin:16px 0 0;font-size:15px;line-height:1.6}.subject-page-layout{grid-template-columns:minmax(0,1fr) 252px;gap:24px}.subject-page-examples{gap:12px;max-height:none;padding:18px}.subject-page-section-label{color:var(--accent);align-items:center;gap:8px;display:flex}.subject-page-section-label h2{color:var(--text-h);letter-spacing:-.01em;margin:0;font-size:15px}.subject-page-examples>p{color:var(--text);margin:-4px 0 0;font-size:13px;line-height:1.45}.example-question-list{max-height:none;padding-top:2px}.example-question-card{border-radius:11px;padding:11px 12px}.subject-page-ask{border:1px solid var(--border);background:linear-gradient(135deg, var(--panel-bg), var(--accent-soft));border-radius:18px;padding:22px;box-shadow:0 8px 30px #261b500d}.subject-page-ask .subject-page-section-label{margin-bottom:14px}.chat-composer{background:var(--panel-bg)}.subject-page-input-hint{margin:9px 2px 0}.subject-page-viewer{min-height:330px;padding:0 8px 8px;overflow:hidden}.subject-page-viewer-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:16px;padding:18px 14px 14px;display:flex}.subject-page-viewer-header h2{letter-spacing:-.02em;font-size:17px}.subject-page-live-status{background:var(--accent-soft);color:var(--accent2);border-radius:999px;padding:5px 9px;font-size:12px;font-weight:700}@media (width<=720px){.subject-page-header{margin-bottom:20px}.subject-page-layout{grid-template-columns:1fr}.subject-page-examples{position:static}.example-question-list{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.subject-page-ask{padding:18px}.subject-page-viewer{min-height:280px}}@media (width<=420px){.example-question-list{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){.completion-confetti{display:none}}.subject-page-breadcrumb{margin-bottom:16px}.subject-page-breadcrumb ol{color:var(--text);flex-wrap:wrap;gap:6px;margin:0;padding:0;font-size:13px;list-style:none;display:flex}.subject-page-breadcrumb li:not(:last-child):after{content:"/";color:var(--border);margin-left:6px}.subject-page-breadcrumb a{color:var(--text);text-decoration:none}.subject-page-breadcrumb a:hover{color:var(--accent)}.subject-page-breadcrumb li[aria-current=page]{color:var(--text-h);font-weight:600}.subject-page-related{border-top:1px solid var(--border);margin-top:40px;padding-top:24px}.subject-page-related h2{margin-bottom:12px;font-size:16px}.subject-page-related ul{flex-wrap:wrap;gap:10px;margin:0;padding:0;list-style:none;display:flex}.subject-page-related a{border:1px solid var(--border);color:var(--text-h);border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;text-decoration:none;transition:border-color .15s,color .15s;display:inline-block}.subject-page-related a:hover{border-color:var(--accent);color:var(--accent)}.solve-hub .subject-card-grid{max-width:760px}.solve-popular-section,.solve-examples-section{margin-top:40px}.solve-examples-section>p{color:var(--text);margin:4px 0 14px;font-size:13px}.solve-examples-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin-top:14px;display:grid}.solve-example-card{border:1px solid var(--border);background:var(--panel-bg);color:var(--text-h);font-family:var(--mono);border-radius:12px;flex-direction:column;gap:4px;padding:14px 16px;font-size:14px;font-weight:600;text-decoration:none;transition:border-color .15s,transform .15s;display:flex}.solve-example-card:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.solve-example-card-topic{font-family:var(--sans);color:var(--accent2);letter-spacing:.06em;text-transform:uppercase;font-size:11px;font-weight:800}.solved-question-page .blog-header{margin-bottom:20px}.solved-question-page h1{font-family:var(--mono);font-size:clamp(24px,4vw,34px)}.solved-question-faq{border-top:1px solid var(--border);margin-top:40px;padding-top:24px}.solved-question-faq h2{margin-bottom:16px;font-size:18px}.solved-question-faq dl{flex-direction:column;gap:18px;display:flex}.solved-question-faq-item dt{color:var(--text-h);margin-bottom:6px;font-size:15px;font-weight:700}.solved-question-faq-item dd{color:var(--text);margin:0;font-size:14px;line-height:1.6}.blog-page{max-width:900px;margin:0 auto;padding:32px 20px 64px}.blog-header{margin-bottom:24px}.blog-header h1{letter-spacing:-.03em;font-size:clamp(28px,4vw,38px);line-height:1.1}.blog-header p{color:var(--text);max-width:60ch;margin-top:10px}.blog-post-meta{color:var(--text);margin-top:4px;font-size:13px;display:block}.blog-categories{flex-wrap:wrap;gap:8px;margin-bottom:28px;display:flex}.blog-category-chip{border:1px solid var(--border);background:var(--panel-bg);color:var(--text-h);border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;text-decoration:none;transition:border-color .15s,color .15s}.blog-category-chip:hover{border-color:var(--accent);color:var(--accent)}.blog-search{max-width:420px;margin-bottom:20px}.blog-pagination{justify-content:center;align-items:center;gap:16px;margin-top:32px;display:flex}.blog-pagination button{border:1.5px solid var(--border);background:var(--panel-bg);color:var(--text-h);font:inherit;cursor:pointer;border-radius:10px;padding:8px 16px;font-weight:600;transition:border-color .15s,color .15s}.blog-pagination button:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.blog-pagination button:disabled{opacity:.4;cursor:not-allowed}.blog-pagination-status{color:var(--text);font-size:14px}.blog-post-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;display:grid}.blog-post-card{border:1px solid var(--border);background:var(--panel-bg);color:var(--text-h);border-radius:16px;flex-direction:column;gap:8px;padding:20px;text-decoration:none;transition:transform .15s,border-color .15s;display:flex}.blog-post-card:hover{border-color:var(--accent);transform:translateY(-2px)}.blog-post-card h2{font-size:18px}.blog-post-card p{color:var(--text);margin:0;font-size:14px}.blog-content{max-width:68ch;margin-top:28px}.blog-content p{color:var(--text);margin:0 0 18px;line-height:1.7}.blog-content h3{color:var(--text-h);margin:32px 0 12px;font-size:20px}.blog-content ul{color:var(--text);margin:0 0 18px;padding-left:22px;line-height:1.7}.worksheets-hub{max-width:1000px;margin:0 auto;padding:4px 0 12px}.worksheets-hub-header{text-align:center;max-width:720px;margin:0 auto 28px}.worksheets-hub-header h1{letter-spacing:-.03em;margin:6px 0 12px;font-size:clamp(28px,4vw,38px)}.worksheet-builder{max-width:760px;margin:0 auto 40px;padding:24px}.worksheet-builder-form{grid-template-columns:repeat(auto-fit,minmax(160px,1fr));align-items:end;gap:16px;margin-top:16px;display:grid}.worksheet-builder-form label{color:var(--text-h);flex-direction:column;gap:6px;font-size:13px;font-weight:600;display:flex}.worksheet-builder-submit{grid-column:1/-1;justify-content:center;align-items:center;gap:8px;padding:13px 20px;display:inline-flex}.worksheets-subject-section{margin-bottom:40px}.worksheets-builder-cta{text-align:center;margin-top:32px}.worksheets-builder-cta a{color:var(--accent);font-weight:600;text-decoration:none}.worksheets-builder-cta a:hover{text-decoration:underline}.worksheet-page{max-width:760px;margin:0 auto;padding:32px 20px 64px}.worksheet-header .blog-post-meta{margin-bottom:14px}.worksheet-name-date{color:var(--text-h);font-size:14px;font-family:var(--mono);flex-wrap:wrap;gap:24px;margin:6px 0 18px;display:flex}.worksheet-actions{gap:10px;display:flex}.worksheet-score-bar{border:1px solid var(--border);background:var(--panel-bg);color:var(--text-h);border-radius:14px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:24px;padding:14px 18px;font-size:14px;font-weight:600;display:flex}.worksheet-score-actions{flex-wrap:wrap;gap:8px;display:flex}.worksheet-score-actions .btn{align-items:center;gap:6px;padding:7px 12px;font-size:13px;display:inline-flex}.worksheet-question-list{flex-direction:column;gap:20px;margin:0 0 40px;padding:0;list-style:none;display:flex}.worksheet-question{border:1.5px solid var(--border);background:var(--panel-bg);border-radius:14px;padding:16px 18px;transition:border-color .15s}.worksheet-question.is-correct{border-color:var(--result-bg)}.worksheet-question.is-incorrect{border-color:#e0575f}.worksheet-question-prompt{color:var(--text-h);margin:0 0 10px;font-size:15px;font-weight:600;line-height:1.5}.worksheet-question-choices{flex-direction:column;gap:8px;display:flex}.worksheet-question-choices label{color:var(--text);align-items:center;gap:8px;font-size:14px;display:flex}.worksheet-question-input{max-width:220px}.worksheet-question-answer{color:var(--accent2);margin:8px 0 0;font-size:13px;font-weight:600}.worksheet-answer-key{border-top:1px solid var(--border);margin-top:40px;padding-top:24px}.worksheet-answer-key h2{margin-bottom:14px;font-size:18px}.worksheet-answer-key ol{columns:2;color:var(--text);gap:24px;padding-left:20px;font-size:14px;line-height:2}@media print{.no-print,.app-header,.app-footer{display:none!important}.worksheet-page{max-width:none;padding:0}.worksheet-question{break-inside:avoid;background:0 0;border:none;padding:8px 0}.worksheet-question-input{background:0 0;border:none;border-bottom:1.5px solid #000;border-radius:0}.worksheet-answer-key{break-before:page}a{color:inherit;text-decoration:none}}.step-quiz-panel{border:1.5px solid var(--border);background:var(--bg);border-radius:14px;flex-direction:column;gap:12px;margin-top:16px;padding:20px;display:flex}.step-quiz-panel-narration{align-items:center}.step-quiz-instruction{color:var(--text);margin:0;font-size:13.5px}.step-quiz-question{color:var(--text-h);font-size:17px;font-weight:700;font-family:var(--mono);margin:0}.step-quiz-input-row{gap:10px;display:flex}.step-quiz-input-row .ui-input{max-width:220px}.step-quiz-buttons{flex-wrap:wrap;gap:8px;display:flex}.step-quiz-buttons .btn{align-items:center;gap:6px;padding:8px 14px;font-size:13.5px;display:inline-flex}.step-quiz-hints-wrap{flex-direction:column;gap:6px;display:flex}.step-quiz-hints{border:1px dashed var(--border);border-radius:10px;flex-direction:column;gap:6px;margin:0;padding:12px 14px;list-style:none;display:flex}.step-quiz-hints li{color:var(--text);font-size:13.5px;line-height:1.5}.step-quiz-hints li:before{content:"💡 "}.step-quiz-explain-panel{background:var(--accent-soft);color:var(--text-h);border-radius:10px;padding:14px 16px;font-size:13.5px;line-height:1.6}.step-quiz-explain-panel p{margin:0 0 8px}.step-quiz-explain-panel p:last-child{margin-bottom:0}.step-quiz-hints-header,.step-quiz-explain-header,.step-quiz-reveal-header{justify-content:space-between;align-items:center;gap:8px;display:flex}.step-quiz-hints-header span,.step-quiz-explain-header span{color:var(--accent2);letter-spacing:.06em;text-transform:uppercase;font-size:11px;font-weight:800}.step-quiz-hints-header .speak-button,.step-quiz-explain-header .speak-button,.step-quiz-reveal-header .speak-button,.step-quiz-feedback .speak-button{margin-left:0}.step-quiz-feedback{border-radius:10px;align-items:center;gap:8px;padding:12px 16px;font-size:13.5px;font-weight:600;line-height:1.5;display:flex}.step-quiz-feedback.is-correct{background:var(--result-bg);color:var(--result-text);flex-wrap:wrap}.step-quiz-feedback.is-incorrect{background:var(--error-bg);color:var(--error-text)}.step-quiz-feedback .btn{margin-left:auto}.step-quiz-reveal{border:1.5px solid var(--final-bg);background:var(--accent-soft);border-radius:10px;flex-direction:column;gap:8px;padding:14px 16px;display:flex}.step-quiz-reveal-header{align-items:flex-start}.step-quiz-reveal p{color:var(--text-h);margin:0;font-size:13.5px;line-height:1.55}.step-quiz-reveal .btn{align-self:flex-start}.guided-lesson-footer{justify-content:center;gap:16px;margin-top:14px;display:flex}.guided-lesson-footer .btn{align-items:center;gap:6px;font-size:12.5px;display:inline-flex}.games-shell{--game-path-color:#a9743f;--game-node-locked:#b9b3c4;--game-node-current:#7554fb;--game-node-completed:#f5b301;--game-ink:#2c2438;--game-card-bg:#fff;--game-card-shadow:0 12px 30px #2c243824;--world-addition:#22a35a;--world-subtraction:#e07a1f;--world-multiplication:#8b3fd6;--world-division:#1590c7;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;min-height:100vh;color:var(--game-ink);font:17px/1.5 var(--sans);background:#dff6ff}@media (prefers-reduced-motion:reduce){.games-shell *{transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}.games-main{max-width:1080px;margin:30px auto 0;padding:5px 16px 56px}.placeholder-art{object-fit:cover;border-radius:24px;justify-content:center;align-items:center;width:100%;height:100%;display:flex;overflow:hidden}.placeholder-art-blob span{filter:drop-shadow(0 4px 6px #0000002e);font-size:48px;line-height:1}.game-hud{z-index:30;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:var(--game-card-shadow);background:#ffffffe0;flex-wrap:wrap;align-items:center;gap:12px;display:flex;position:sticky;top:0}@media (prefers-color-scheme:dark){.game-hud{background:#1c1728e0}}.game-hud-back{color:#fff;white-space:nowrap;background:linear-gradient(135deg,#8b5cf6,#7c3aed);border-radius:999px;align-items:center;padding:10px 18px;font-size:13px;font-weight:800;text-decoration:none;display:inline-flex;box-shadow:0 6px 14px #7c3aed59}.game-hud-stats{background:var(--game-card-bg);box-shadow:var(--game-card-shadow);border-radius:999px;flex-wrap:wrap;align-items:center;gap:14px;margin-left:auto;padding:6px 18px;display:flex}.game-hud-divider{background:var(--border);flex-shrink:0;width:1px;height:26px}.game-hud-stat{white-space:nowrap;flex-direction:column;align-items:flex-start;line-height:1.25;display:flex}.game-hud-stat-value{font-size:14px;font-weight:800}.game-hud-stat-label{text-transform:uppercase;letter-spacing:.03em;opacity:.55;font-size:10.5px;font-weight:700}.xp-display,.coin-display{white-space:nowrap;flex-direction:column;align-items:flex-start;line-height:1.25;display:flex;position:relative}.xp-display-value,.coin-display-value{white-space:nowrap;font-size:14px;font-weight:800}.xp-display-level{opacity:.55;white-space:nowrap;font-size:10.5px;font-weight:700}.coin-display-delta{color:#d97706;pointer-events:none;font-size:12px;font-weight:800;position:absolute;top:-4px;right:-26px}.star-rating{gap:2px;display:inline-flex}.star-rating-sm{font-size:12px}.star-rating-md{font-size:18px}.star-rating-lg{font-size:28px}.progress-bar{flex-direction:column;gap:4px;width:100%;display:flex}.progress-bar-label{opacity:.8;font-size:12.5px;font-weight:700}.progress-bar-track{background:#00000014;border-radius:999px;height:12px;overflow:hidden}.progress-bar-fill{background:var(--gradient-primary);border-radius:999px;height:100%}.games-home{position:relative}.games-home-content{z-index:1;flex-direction:column;gap:28px;padding-top:8px;display:flex;position:relative}.adventure-bg{z-index:0;pointer-events:none;border-radius:0 0 56px 56px;height:760px;position:absolute;inset:-20px 0 auto;overflow:hidden}.adventure-bg-sky{background:linear-gradient(#6ec3f4 0%,#9fdff0 40%,#cdeecb 75%,#eaf7e0 100%);position:absolute;inset:0}@media (prefers-color-scheme:dark){.adventure-bg-sky{background:linear-gradient(#22315a 0%,#2a3f52 40%,#2c4030 75%,#263420 100%)}}.adventure-bg-rainbow{opacity:.9;background:conic-gradient(from 180deg,#ef476f 0deg 30deg,#ff9f43 30deg 60deg,#ffd166 60deg 90deg,#8ec63f 90deg 120deg,#4cc9f0 120deg 150deg,#7c3aed 150deg 180deg,#0000 180deg 360deg);border-radius:50%;width:340px;height:340px;position:absolute;top:60px;left:-80px;-webkit-mask:radial-gradient(circle,#0000 62%,#000 63% 78%,#0000 79%);mask:radial-gradient(circle,#0000 62%,#000 63% 78%,#0000 79%)}.adventure-bg-mountain{clip-path:polygon(50% 0%,100% 100%,0% 100%);opacity:.8;background:linear-gradient(160deg,#b7c7e0,#93a6c6);width:260px;height:170px;position:absolute;bottom:190px}@media (prefers-color-scheme:dark){.adventure-bg-mountain{background:linear-gradient(160deg,#3a4a68,#2c3a52)}}.adventure-bg-mountain-right{width:220px;height:140px;right:-60px}.adventure-bg-hills{background:linear-gradient(#8fd37f 0%,#6cc262 100%);border-radius:50% 50% 0 0/100% 100% 0 0;width:120%;height:240px;position:absolute;bottom:-60px;left:-10%}@media (prefers-color-scheme:dark){.adventure-bg-hills{background:linear-gradient(#2c4030 0%,#223521 100%)}}.floating-decorations{z-index:0;pointer-events:none;height:760px;position:absolute;inset:-20px 0 auto;overflow:hidden}.floating-decor{position:absolute}.floating-decor .placeholder-art{border-radius:50%}.floating-decor-hero{width:150px;height:150px;top:70px;left:3%}.floating-decor-hero .placeholder-art-blob span{font-size:72px}.floating-decor-bunny{width:110px;height:110px;top:210px;right:3%}.floating-decor-bunny .placeholder-art-blob span{font-size:54px}.floating-decor-balloon{width:90px;height:110px;top:40px;right:6%}.floating-decor-balloon .placeholder-art-blob span{font-size:46px}.floating-decor-star,.floating-decor-butterfly{font-size:20px;position:absolute}.floating-decor-butterfly-1{top:260px;left:20%}.floating-decor-butterfly-2{top:340px;right:18%}.adventure-hero{text-align:center;padding:8px 0 4px}.adventure-hero-title{text-shadow:0 3px #7c3aed59,0 6px 14px #00000040;flex-direction:column;align-items:center;margin:0 0 14px;line-height:1.05;display:flex}.adventure-hero-title-line1{color:#fff;font-size:clamp(24px,5vw,34px);font-weight:800}.adventure-hero-title-line2{background:linear-gradient(#ffe37a,#ffb703);color:#0000;-webkit-background-clip:text;background-clip:text;font-size:clamp(38px,9vw,60px);font-weight:900}.adventure-hero-subtitle{color:#fff;box-shadow:var(--game-card-shadow);background:linear-gradient(135deg,#7c3aed,#a855f7);border-radius:999px;margin:0;padding:8px 22px;font-size:14px;font-weight:700;display:inline-block}.continue-adventure-card{color:inherit;text-decoration:none;display:block}.continue-adventure-inner{border-radius:var(--radius-lg);box-shadow:var(--game-card-shadow);background:linear-gradient(135deg,#fff3c4,#ffe08a);border:4px solid #fff9;justify-content:space-between;align-items:center;gap:20px;padding:22px 26px;display:flex}.continue-adventure-card-start .continue-adventure-inner{background:linear-gradient(135deg,#ffd8a8,#ff9f43)}.continue-adventure-text{flex:1;min-width:0}.continue-adventure-kicker{color:#7c3aed;letter-spacing:.03em;background:#fff;border-radius:999px;margin:0 0 8px;padding:4px 12px;font-size:11.5px;font-weight:800;display:inline-block}.continue-adventure-title{color:#166534;margin:0 0 4px;font-size:clamp(22px,4vw,28px);font-weight:800}.continue-adventure-sub{color:#4b4658;opacity:.85;margin:0 0 14px;font-weight:700}.continue-adventure-actions{flex-wrap:wrap;align-items:center;gap:16px;display:flex}.continue-adventure-btn{color:#fff;letter-spacing:.02em;background:#22c55e;font-weight:800;box-shadow:0 6px 14px #22c55e66}.continue-adventure-mascot{flex-shrink:0;width:130px;height:130px}.continue-adventure-mascot.placeholder-art-blob span{font-size:64px}.world-grid-section{flex-direction:column;gap:24px;display:flex}.world-grid{grid-template-columns:repeat(4,1fr);gap:18px;display:grid}@media (width<=980px){.world-grid{grid-template-columns:repeat(2,1fr)}}@media (width<=560px){.world-grid{grid-template-columns:1fr}}.world-card{color:inherit;text-decoration:none;display:block}.world-card-inner{background:var(--game-card-bg);border-radius:var(--radius-lg);box-shadow:var(--game-card-shadow);border:4px solid #0000;flex-direction:column;height:100%;transition:border-color .15s;display:flex;overflow:hidden}.world-card:hover .world-card-inner,.world-card:focus-visible .world-card-inner{border-color:var(--world-accent,var(--accent))}.game-theme-addition{--world-accent:var(--world-addition)}.game-theme-subtraction{--world-accent:var(--world-subtraction)}.game-theme-multiplication{--world-accent:var(--world-multiplication)}.game-theme-division{--world-accent:var(--world-division)}.world-card-art{align-items:flex-end;height:150px;display:flex;position:relative;overflow:hidden}.world-card-art-img{border-radius:0;position:absolute;inset:0}.world-card-art-img.placeholder-art-blob span{font-size:60px}.world-card-decor{pointer-events:none;position:absolute;inset:0}.game-theme-addition .world-card-decor:before,.game-theme-addition .world-card-decor:after{content:"🍃";opacity:.85;font-size:18px;position:absolute}.game-theme-addition .world-card-decor:before{top:10px;left:10px}.game-theme-addition .world-card-decor:after{top:18px;right:16px}.game-theme-subtraction .world-card-decor:before,.game-theme-subtraction .world-card-decor:after{content:"☀️";opacity:.9;font-size:18px;position:absolute}.game-theme-subtraction .world-card-decor:before{top:10px;right:12px}.game-theme-subtraction .world-card-decor:after{content:"";background:linear-gradient(#0000,#f5b25f8c);height:22px;bottom:0;left:0;right:0}.game-theme-multiplication .world-card-decor:before,.game-theme-multiplication .world-card-decor:after{content:"🚩";opacity:.9;font-size:16px;position:absolute}.game-theme-multiplication .world-card-decor:before{top:8px;left:14px}.game-theme-multiplication .world-card-decor:after{top:8px;right:14px}.game-theme-division .world-card-decor:before,.game-theme-division .world-card-decor:after{content:"";background:#ffffff8c;border-radius:50%;position:absolute}.game-theme-division .world-card-decor:before{width:10px;height:10px;bottom:30px;left:20px}.game-theme-division .world-card-decor:after{width:6px;height:6px;bottom:50px;left:34px}.world-card-name{z-index:1;color:#fff;background:linear-gradient(0deg, color-mix(in srgb, var(--world-accent) 88%, black 10%) 0%, transparent 100%);width:100%;margin:0;padding:8px 14px;font-size:17px;font-weight:800;position:relative}.world-card-enter-cta{z-index:2;background:color-mix(in srgb, var(--world-accent) 55%, transparent);color:#fff;letter-spacing:.03em;opacity:0;justify-content:center;align-items:center;font-size:13.5px;font-weight:800;transition:opacity .15s;display:flex;position:absolute;inset:0}.world-card:hover .world-card-enter-cta,.world-card:focus-visible .world-card-enter-cta{opacity:1}.world-card-body{flex-direction:column;flex:1;gap:10px;padding:12px 14px 16px;display:flex}.world-card-tagline{opacity:.72;margin:0;font-size:13px;font-weight:600;line-height:1.4}.world-card-progress{align-items:center;gap:8px;margin-top:auto;display:flex}.world-card-progress-star{flex-shrink:0;font-size:13px}.world-card-progress-track{background:#00000014;border-radius:999px;flex:1;height:10px;display:block;overflow:hidden}.world-card-progress-fill{background:var(--world-accent,var(--accent));border-radius:999px;height:100%;display:block}.world-card-progress-fraction{white-space:nowrap;flex-shrink:0;font-size:12px;font-weight:800}.world-grid-future-heading{text-transform:uppercase;letter-spacing:.04em;opacity:.6;text-align:center;margin:0 0 12px;font-size:14px;font-weight:800}.world-grid-future-row{grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;display:grid}.world-card-locked .world-card-inner{background:var(--game-card-bg);opacity:.7}.world-card-locked .world-card-art-locked{background:#0000000f;justify-content:center;align-items:center;height:74px;display:flex}.world-card-locked-emoji{filter:grayscale(.4);font-size:34px}.world-card-locked .world-card-body{text-align:center;gap:4px;padding:10px 12px 14px}.world-card-locked-name{margin:0;font-size:13px;font-weight:800}.world-card-locked-tag{opacity:.6;margin:0;font-size:11.5px;font-weight:700}.progress-section{border-radius:var(--radius-lg);box-shadow:var(--game-card-shadow);background:linear-gradient(135deg,#fff8e1,#ffedb8);flex-wrap:wrap;align-items:flex-start;gap:22px;padding:22px;display:flex}@media (prefers-color-scheme:dark){.progress-section{background:linear-gradient(135deg,#2c2716,#3a3018)}}.progress-panel{flex:2;align-items:flex-start;gap:16px;min-width:240px;display:flex}.progress-panel-mascot{flex-shrink:0;width:100px;height:130px}.progress-panel-mascot.placeholder-art-blob span{font-size:52px}.progress-panel-main{flex-direction:column;flex:1;gap:14px;min-width:0;display:flex}.progress-panel-heading{color:#7c3aed;margin:0;font-size:18px;font-weight:800}.progress-panel-rows{flex-direction:column;gap:12px;display:flex}.progress-panel-row{grid-template-columns:22px minmax(0,150px) 1fr 40px;align-items:center;gap:10px;display:grid}.progress-panel-row-icon{font-size:16px}.progress-panel-row-name{white-space:nowrap;text-overflow:ellipsis;font-size:13.5px;font-weight:700;overflow:hidden}.progress-panel-row-pct{text-align:right;font-size:13px;font-weight:800}.player-stats{flex-direction:column;flex:1;align-items:center;gap:6px;min-width:200px;display:flex}.player-stats-trophy{width:80px;height:80px}.player-stats-trophy.placeholder-art-blob span{font-size:40px}.player-stats-card{background:linear-gradient(135deg,#7c3aed,#a855f7);border-radius:18px;flex-direction:column;gap:10px;width:100%;padding:14px 16px;display:flex}.player-stats-row{color:#fff;grid-template-columns:20px 1fr auto;align-items:center;gap:8px;font-size:12.5px;font-weight:700;display:grid}.player-stats-row strong{background:#ffffff2e;border-radius:8px;padding:3px 10px;font-size:15px}.games-bottom-nav{background:var(--game-card-bg);box-shadow:var(--game-card-shadow);border-radius:999px;flex-wrap:wrap;justify-content:center;gap:6px;padding:10px 14px;display:flex}.games-bottom-nav-item{font:inherit;cursor:default;opacity:.55;background:0 0;border:none;border-radius:16px;flex-direction:column;align-items:center;gap:2px;min-width:64px;padding:8px 14px;display:flex;position:relative}.games-bottom-nav-label{white-space:nowrap;font-size:10.5px;font-weight:700}.games-bottom-nav-soon{text-transform:uppercase;background:var(--accent);color:#fff;border-radius:999px;padding:1px 5px;font-size:8px;font-weight:800;position:absolute;top:2px;right:4px}.games-shell,.games-shell .games-home{color:#3d2455;background:#dff6ff}.games-main{max-width:1160px;padding:0 20px 48px}.games-home-content{gap:22px;padding-top:4px}.adventure-bg,.floating-decorations{border-radius:0 0 72px 72px;width:calc(100% + 40px);height:785px;inset:-18px -20px auto}.adventure-bg-sky{background:radial-gradient(at 11% 19%,#ffffffeb 0 4%,#0000 4.5%),radial-gradient(at 12% 22%,#ffffffeb 0 6%,#0000 6.5%),radial-gradient(at 78% 24%,#ffffffe6 0 5%,#0000 5.5%),linear-gradient(#23baff 0%,#79d6fb 51%,#c7f3cd 75%,#6dcc72 100%)}.adventure-bg-rainbow{opacity:.8;filter:drop-shadow(0 5px 4px #46875926);width:310px;height:310px;top:122px;left:-90px}.adventure-bg-mountain{opacity:.42;background:linear-gradient(160deg,#fff 0 18%,#86bd96 19% 100%);bottom:198px}.adventure-bg-mountain-left{left:8%}.adventure-bg-mountain-right{right:8%}.adventure-bg-hills{background:linear-gradient(#91dc68,#3aab50);height:220px;bottom:-45px}.adventure-hero{padding:12px 0 0}.adventure-hero-title{text-shadow:0 4px #256bb9,0 8px #362d8773,0 12px 18px #184b7940;margin-bottom:10px;line-height:.86}.adventure-hero-title-line1{letter-spacing:-.07em;color:#f9ffff;-webkit-text-stroke:2px #246ec2;font-size:clamp(38px,6.3vw,66px)}.adventure-hero-title-line2{letter-spacing:-.075em;-webkit-text-stroke:3px #8736ab;text-shadow:0 4px #5f2584;background:linear-gradient(#fff258 5%,#ffc400 48%,#ff8c00 100%);font-size:clamp(52px,9.2vw,88px)}.adventure-hero-subtitle{background:linear-gradient(135deg,#6f49db,#4d38b9);border-radius:8px 8px 22px 22px;padding:10px 32px 12px;font-size:15px;box-shadow:0 7px #3821883b,0 12px 22px #28328733}.game-hud{z-index:5;width:min(1120px,100% - 32px);box-shadow:none;background:0 0;justify-content:space-between;margin:0 auto;padding:2px 0;position:relative}.game-hud-back{background:linear-gradient(135deg,#9e43de,#6438c5);border:2px solid #fff9;min-height:44px;padding:0 18px;font-size:14px;box-shadow:inset 0 2px #ffffff52,0 5px #5832a5,0 8px 14px #491e8040}.game-hud-stats{background:#f8fcffeb;border:2px solid #ffffffe6;gap:12px;padding:7px 18px;box-shadow:0 5px #367eb42e,0 10px 22px #2974a933}.game-hud-divider{background:#d7e8f2;height:32px}.game-hud-stat-value,.xp-display-value,.coin-display-value{color:#5b2c8c;font-size:14px}.game-hud-stat-label,.xp-display-level{color:#75548d;opacity:.9;text-transform:none;letter-spacing:0}.continue-adventure-inner{background:linear-gradient(112deg,#fffbe2 0%,#ffef9a 51%,#e4f875 100%);border:3px solid #fff9cf;border-radius:34px;min-height:170px;padding:22px 42px;position:relative;overflow:hidden;box-shadow:0 8px #deb545,0 16px 28px #3b74483b}.continue-adventure-inner:after{content:"";opacity:.38;pointer-events:none;background:radial-gradient(circle at 65% 67%,#9bcf36 0 12%,#0000 12.5%),radial-gradient(circle at 78% 43%,#aee943 0 19%,#0000 19.5%),radial-gradient(circle at 82% 76%,#70b84d 0 23%,#0000 23.5%);width:44%;height:100%;position:absolute;bottom:0;right:0}.continue-adventure-text,.continue-adventure-mascot{z-index:1;position:relative}.continue-adventure-kicker{color:#7835ad;padding:5px 13px;box-shadow:0 2px #7635ad24}.continue-adventure-title{color:#26731d;font-size:clamp(27px,4vw,35px)}.continue-adventure-sub{color:#643b8e}.continue-adventure-btn{background:linear-gradient(#7cdc20,#32a800);border:2px solid #ffffff80;padding:11px 30px;box-shadow:inset 0 2px #ffffff52,0 5px #248505,0 10px 14px #278f0c38}.continue-adventure-mascot{border:5px solid #fff9;border-radius:42% 58% 48% 52%;width:138px;height:138px;box-shadow:0 9px 12px #4e852d33}.world-grid{gap:16px}.world-card-inner{box-shadow:0 7px 0 color-mix(in srgb,var(--world-accent) 60%, #987437), 0 14px 24px #2459453d;background:#fff;border:3px solid #fffc;border-radius:32px}.world-card-art{height:210px}.world-card-art-img{filter:saturate(1.2)}.world-card-art-img.placeholder-art-blob span{filter:drop-shadow(0 6px #35373226);font-size:84px}.world-card-name{text-align:center;text-shadow:0 2px #00000047;background:linear-gradient(0deg, color-mix(in srgb,var(--world-accent) 96%, #263e32) 0%, transparent 92%);padding:10px 13px;font-size:21px;line-height:1}.world-card-body{color:#fff;background:linear-gradient(145deg,color-mix(in srgb,var(--world-accent) 86%,#fff),var(--world-accent));min-height:100px;padding:13px 16px 15px}.world-card-tagline{opacity:1;text-align:center;min-height:37px;font-weight:800}.world-card-progress-track{background:#08372840;box-shadow:inset 0 1px 2px #00000038}.world-card-progress-fill{background:linear-gradient(90deg,#ffec43,#ffc21a);box-shadow:0 1px 3px #fff9}.world-card-progress-fraction{color:#fff}.world-card-enter-cta{background:color-mix(in srgb,var(--world-accent) 70%,transparent);font-size:15px}.progress-section{background:linear-gradient(120deg,#fffdf2,#fff0b7);border:3px solid #fff8cd;border-radius:34px;padding:21px 28px;box-shadow:0 7px #d9bd6a,0 14px 24px #53643530}.progress-panel-heading{color:#783aa4;font-size:23px}.progress-panel-mascot{border-radius:42px 42px 20px 20px}.progress-panel-row-name,.progress-panel-row-pct{color:#67343d}.progress-bar-track{background:#f7e5a7}.progress-bar-fill{background:linear-gradient(90deg,#65bd20,#23a616)}.player-stats-card{background:linear-gradient(135deg,#a33cd0,#6630ae);border:3px solid #c85ce5;box-shadow:0 5px #54258b}.player-stats-trophy{z-index:1;margin-bottom:-14px}.games-bottom-nav{background:linear-gradient(#fffdeb,#ffeeb3);border:3px solid #fff9d5;gap:0;padding:10px 24px;box-shadow:0 6px #cfb96e,0 12px 22px #59633e2e}.games-bottom-nav-item{opacity:1;color:#6a3a30;min-width:118px}.games-bottom-nav-item+.games-bottom-nav-item{border-left:1px solid #f1dc9f}.games-bottom-nav-emoji{font-size:28px}.games-bottom-nav-label{font-size:11px}.games-bottom-nav-soon{display:none}@media (width<=700px){.games-main{padding:4px 12px 34px}.game-hud{align-items:stretch;gap:12px;width:calc(100% - 24px)}.game-hud-back{align-self:flex-start}.game-hud-stats{justify-content:space-around;gap:7px;width:100%;margin-left:0;padding:7px 9px}.game-hud-divider{display:none}.continue-adventure-inner{min-height:0;padding:22px}.continue-adventure-mascot{width:90px;height:90px}.world-card-art{height:190px}.progress-section{padding:18px}.games-bottom-nav{border-radius:28px;padding:8px}.games-bottom-nav-item{min-width:62px;padding:6px}.games-bottom-nav-label{font-size:9px}}.topic-map{flex-direction:column;gap:8px;display:flex}.topic-map-hero{text-align:center;margin-bottom:8px}.topic-map-hero h1{margin:0 0 4px;font-size:clamp(26px,4.5vw,36px)}.topic-map-hero p{opacity:.75;margin:0}.difficulty-map{border-radius:var(--radius-lg);background:var(--game-card-bg);box-shadow:var(--game-card-shadow);margin-bottom:18px;overflow:hidden}.difficulty-map-header{justify-content:space-between;align-items:center;padding:14px 20px;font-weight:800;display:flex}.difficulty-map-header h2{text-transform:uppercase;letter-spacing:.04em;margin:0;font-size:16px}.difficulty-map-lock{opacity:.7;font-size:12.5px;font-weight:700}.difficulty-map-track{padding:8px 0;position:relative}.game-map{width:100%;position:relative}.game-map-path{pointer-events:none;position:absolute;inset:0}.stage-path{display:block}.stage-path-line{stroke:var(--game-path-color);stroke-width:8px;stroke-linecap:round;stroke-dasharray:2 14}.stage-node-link,.stage-node-link-locked{width:84px;height:84px;text-decoration:none;display:block;position:absolute;transform:translate(-50%)}.stage-node{color:#fff;border:4px solid #ffffff80;border-radius:50%;flex-direction:column;justify-content:center;align-items:center;gap:2px;width:100%;height:100%;font-weight:800;display:flex;box-shadow:0 8px 18px #0003,inset 0 -4px #00000026}.stage-node-locked{background:var(--game-node-locked);color:#6b6577;box-shadow:none;border-color:#ffffff4d}.stage-node-current{background:var(--game-node-current)}.stage-node-label{font-size:16px}.stage-game{box-sizing:border-box;flex-direction:column;gap:10px;width:100vw;max-width:1400px;margin-left:calc(50% - 50vw);margin-right:calc(50% - 50vw);padding-left:max(16px,50vw - 700px);padding-right:max(16px,50vw - 700px);display:flex}.stage-game-top{background:var(--game-card-bg);border-radius:14px;align-items:center;gap:10px;padding:6px 14px;display:flex;box-shadow:0 2px 6px #0000000f}.stage-game-back{font:inherit;cursor:pointer;color:var(--game-ink);background:0 0;border:none;align-items:center;gap:4px;padding:4px 2px;font-size:12px;font-weight:700;display:inline-flex}.stage-game-title{text-align:center;flex:1}.stage-game-title h1{white-space:nowrap;text-overflow:ellipsis;margin:0;font-size:13.5px;overflow:hidden}.stage-game-title h1 span{opacity:.65;font-weight:600}.game-question{background:var(--game-card-bg);border-radius:var(--radius-lg);box-shadow:var(--game-card-shadow);flex-direction:column;justify-content:center;align-items:center;gap:24px;min-height:320px;padding:32px 20px;display:flex}.game-question-prompt{text-align:center}.game-prompt-text{font-size:clamp(30px,7vw,44px);font-weight:800}.game-emoji-prompt{word-break:break-word;font-size:clamp(26px,6vw,38px);line-height:1.4}.game-prompt-question{opacity:.75;margin:6px 0 0;font-weight:700}.game-question-options{grid-template-columns:repeat(2,minmax(88px,1fr));gap:14px;width:100%;max-width:360px;display:grid}@media (width>=560px){.game-question-options{grid-template-columns:repeat(4,minmax(70px,1fr));max-width:480px}}.game-option-btn{font:inherit;background:var(--accent-soft);color:var(--accent);cursor:pointer;border:none;border-radius:18px;min-height:64px;padding:18px 10px;font-size:22px;font-weight:800}.game-option-btn:disabled{cursor:default}.game-option-btn-correct{background:var(--result-bg);color:var(--result-text)}.game-option-btn-wrong{background:var(--error-bg);color:var(--error-text)}.game-feedback{border-radius:999px;padding:10px 18px;font-size:17px;font-weight:800}.game-feedback-correct{background:var(--result-bg);color:var(--result-text)}.game-feedback-wrong{background:var(--highlight-bg);color:var(--highlight-text)}.game-result,.level-complete-overlay{justify-content:center;padding:20px 0;display:flex;position:relative}.game-result-card,.level-complete-card{background:var(--game-card-bg);border-radius:var(--radius-lg);box-shadow:var(--game-card-shadow);text-align:center;flex-direction:column;align-items:center;gap:10px;width:100%;max-width:420px;padding:32px 24px;display:flex}.game-result-card h2,.level-complete-card h2{margin:0;font-size:24px}.game-result-world{opacity:.7;margin:0;font-weight:700}.game-result-score{color:var(--accent);font-size:44px;font-weight:900}.game-result-stats{flex-wrap:wrap;justify-content:center;gap:20px;margin-top:6px;display:flex}.game-result-stats span{opacity:.65;text-transform:uppercase;font-size:11.5px;font-weight:700;display:block}.game-result-stats strong{font-size:18px}.game-result-rewards{color:#d97706;gap:16px;font-size:15px;font-weight:800;display:flex}.game-result-actions{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:10px;display:flex}.level-complete-rewards{color:#d97706;margin-top:4px;font-weight:800}@media (width<=640px){.adventure-bg,.floating-decorations{height:620px}.floating-decor-hero{width:100px;height:100px;top:30px}.floating-decor-hero .placeholder-art-blob span{font-size:48px}.floating-decor-bunny,.floating-decor-balloon,.floating-decor-butterfly{display:none}.continue-adventure-inner{text-align:center;flex-direction:column}.continue-adventure-actions{justify-content:center}.continue-adventure-mascot{width:100px;height:100px}.progress-section{text-align:center;flex-direction:column;align-items:center}.progress-panel{flex-direction:column;align-items:center}.progress-panel-row{grid-template-columns:20px 1fr 34px}.progress-panel-row-name{display:none}}@media (width<=480px){.game-hud-stats{gap:10px;padding:6px 12px}.game-hud-divider{display:none}.stage-game-top{flex-wrap:wrap}.games-bottom-nav-item{min-width:52px;padding:8px}.games-bottom-nav-label{display:none}}.world-grid-future-heading{color:#58316f;opacity:1;text-shadow:0 1px #fff}.world-card-locked .world-card-inner{opacity:1;background:#fffdf4;border-color:#fff8d5;box-shadow:0 5px #cbbd9a,0 9px 18px #473f5829}.world-card-locked .world-card-art-locked{background:linear-gradient(135deg,#d9f4ff,#e9e2ff)}.world-card-locked .world-card-body{color:#422752;background:#fffdf4;min-height:0}.world-card-locked-name{color:#422752;font-weight:900}.world-card-locked-tag{color:#72488b;opacity:1;font-weight:800}.topic-map{--map-green:#52b83c;--map-deep:#247b39;isolation:isolate;gap:26px;padding:8px 0 16px;position:relative}.topic-map:before{content:"";z-index:-1;background:radial-gradient(circle at 8% 3%,#ffffffe6 0 2%,#0000 2.2%),radial-gradient(circle at 93% 10%,#fffc 0 2.8%,#0000 3%),linear-gradient(90deg,#189c5d2e 0 10%,#0000 10% 88%,#2287652e 88%),linear-gradient(#86d9ff 0 180px,#86d66f 265px,#3a9e50 100%);border-radius:42px;position:absolute;inset:-30px -24px 0}.topic-map-back{color:#fff;background:linear-gradient(135deg,#9e43de,#6438c5);border:2px solid #fff9;border-radius:999px;align-self:flex-start;align-items:center;gap:6px;min-height:44px;padding:0 18px;font-size:14px;font-weight:800;text-decoration:none;display:inline-flex;box-shadow:inset 0 2px #ffffff52,0 5px #5832a5,0 8px 14px #491e8040}.topic-map-hero{color:#fff;background:linear-gradient(135deg,#1a8f45f5,#46b73ef5);border:3px solid #fffc;border-radius:30px;justify-content:space-between;align-items:center;gap:18px;padding:18px 24px;display:flex;box-shadow:0 7px #237333,0 15px 26px #1c582f40}.topic-map-world-title{align-items:center;gap:14px;display:flex}.topic-map-world-emoji{background:#fff3;border-radius:24px;place-items:center;width:70px;height:70px;font-size:42px;display:grid;box-shadow:inset 0 2px #ffffff4d}.topic-map-kicker{letter-spacing:.1em;text-transform:uppercase;opacity:.82;margin:0 0 2px;font-size:11px;font-weight:900}.topic-map-hero h1{text-shadow:0 3px #115b2759;margin:0;font-size:clamp(28px,4vw,40px);line-height:1}.topic-map-hero p:not(.topic-map-kicker){margin:5px 0 0;font-size:13px;font-weight:700}.topic-map-progress{color:#573073;background:#fffbea;border-radius:20px;flex:0 0 210px;padding:12px 16px;box-shadow:0 4px #50682938}.topic-map-progress>span{text-transform:uppercase;letter-spacing:.04em;font-size:12px;font-weight:900;display:block}.topic-map-progress strong{margin:2px 0 7px;font-size:25px;line-height:1;display:block}.topic-map-progress small{font-size:14px}.topic-map-progress>div{background:#f1df98;border-radius:999px;height:10px;overflow:hidden}.topic-map-progress i{border-radius:inherit;background:linear-gradient(90deg,#69ca28,#269d22);min-width:6px;height:100%;display:block}.difficulty-map{background:linear-gradient(105deg,#b6eb8c,#7ccf67);border:3px solid #ffffffc7;border-radius:34px;margin:0;position:relative;overflow:hidden;box-shadow:0 8px #1d65306b,0 18px 32px #194c2d40}.difficulty-map:before,.difficulty-map:after{content:"";pointer-events:none;z-index:0;position:absolute}.difficulty-map:before{opacity:.75;background:radial-gradient(circle at 7% 17%,#fff8be 0 5px,#0000 6px),radial-gradient(circle at 92% 34%,#fff 0 4px,#0000 5px),radial-gradient(circle at 15% 65%,#2d88308c 0 40px,#0000 41px),radial-gradient(circle at 89% 79%,#1f823780 0 55px,#0000 56px);inset:0}.difficulty-map:after{background:linear-gradient(90deg,#1990e52e,#75daffbf);border-radius:48% 0 0 48%;width:180px;height:480px;top:230px;right:-40px;transform:rotate(9deg)}.difficulty-map>*{z-index:1;position:relative}.difficulty-map-easy{background:linear-gradient(105deg,#c7f19a,#6cc968)}.difficulty-map-medium{background:linear-gradient(105deg,#a8df86,#47ae72)}.difficulty-map-hard{background:linear-gradient(105deg,#97c985,#4d9d7d)}.difficulty-map-advanced{background:linear-gradient(105deg,#a1d09b,#548d86)}.difficulty-map-locked{opacity:1;filter:none}.difficulty-map-locked .difficulty-map-track{filter:saturate(.55)}.difficulty-map-header{color:#fff;background:linear-gradient(90deg,#267a22ed,#399629d4);align-items:center;gap:16px;padding:18px 22px;box-shadow:0 4px 10px #13592240}.difficulty-map-header h2{text-shadow:0 3px #11482052;margin:0;font-size:clamp(23px,3vw,31px);line-height:1}.difficulty-map-eyebrow,.difficulty-map-copy{margin:0;font-weight:800}.difficulty-map-eyebrow{letter-spacing:.06em;text-transform:uppercase;opacity:.85;margin-bottom:5px;font-size:11px}.difficulty-map-copy{margin-top:6px;font-size:13px}.difficulty-map-badge{color:#573077;background:#fff8cf;border:2px solid #ffffff8c;border-radius:999px;flex:none;padding:9px 13px;font-size:13px;font-weight:900;box-shadow:0 3px #1a59233b}.difficulty-map-track{padding:70px 0 32px}.difficulty-map-beginner .difficulty-map-track:before{content:"🚩 START";z-index:2;color:#fff3c2;background:#91501e;border-radius:8px;padding:7px 13px;font-size:13px;font-weight:900;position:absolute;top:20px;left:12%;transform:rotate(-5deg);box-shadow:0 4px #623313}.game-map{width:min(760px,100%);margin:0 auto}.game-map-path{z-index:0}.stage-path-line{stroke:#d2a464;stroke-width:10px;stroke-linecap:round;stroke-dasharray:2 14;filter:drop-shadow(0 2px #ffffff73)}.stage-node-link,.stage-node-link-locked{z-index:2;width:92px;height:92px}.stage-node{text-shadow:0 2px #185d1f59;border:4px solid #faffc9;gap:0;box-shadow:0 7px #166820cc,0 12px 18px #26501f3d,inset 0 4px #ffffff59}.stage-node-completed{background:linear-gradient(135deg,#94e530,#39ac27)}.stage-node-current{background:linear-gradient(135deg,#7be8ff,#168ee7);border-color:#fffbc1;box-shadow:0 0 0 5px #ffee4cd1,0 7px #0864ae,0 14px 25px #1767ac59,inset 0 4px #fff6}.stage-node-locked{color:#f2f2ec;text-shadow:0 2px #3c414159;background:linear-gradient(135deg,#cbd0cc,#858c8b);border-color:#e9ede3;box-shadow:0 6px #676e6d,inset 0 4px #fff6}.stage-node-icon{font-size:19px;line-height:.8}.stage-node-label{font-size:22px;line-height:1.05}.stage-node .star-rating{font-size:11px;line-height:1}.stage-node-play{letter-spacing:.08em;font-size:9px}.stage-node-here{color:#28732a;background:#fffdf0;border-radius:9px;width:max-content;padding:5px 9px;font-size:10px;font-weight:900;position:absolute;bottom:calc(100% + 12px);left:50%;transform:translate(-50%);box-shadow:0 3px #31792540}.difficulty-map-reward{color:#623b26;text-align:left;background:linear-gradient(135deg,#fff6bc,#f6d46d);border:2px solid #ffef9b;border-radius:18px;justify-content:center;align-items:center;gap:10px;margin:0 18px 18px;padding:13px 18px;display:flex;box-shadow:0 4px #c79a31}.difficulty-map-reward>span{font-size:31px}.difficulty-map-reward strong,.difficulty-map-reward small{display:block}.difficulty-map-reward strong{font-size:15px}.difficulty-map-reward small{margin-top:2px;font-weight:700}.difficulty-map-reward-earned{color:#285d2b;background:linear-gradient(135deg,#eaffba,#bdf06c);box-shadow:0 4px #6ba935}.topic-map-master{color:#fff;text-align:center;background:linear-gradient(145deg,#7545be,#3d2d88);border:3px solid #ffefa2;border-radius:32px;padding:30px 20px;box-shadow:0 8px #2e226c,0 18px 28px #2b225747}.topic-map-master>span{font-size:52px;display:block}.topic-map-master h2{text-transform:uppercase;text-shadow:0 3px #21145b73;margin:2px 0 5px;font-size:32px}.topic-map-master p{margin:0;font-weight:700}@media (width<=640px){.topic-map:before{inset:-18px -12px 0}.topic-map-hero{flex-direction:column;align-items:stretch;padding:15px}.topic-map-world-emoji{width:56px;height:56px;font-size:31px}.topic-map-progress{flex-basis:auto}.difficulty-map-header{align-items:flex-start;padding:15px}.difficulty-map-badge{padding:7px 9px;font-size:11px}.difficulty-map-copy{font-size:11px}.game-map{width:100%}.stage-node-link,.stage-node-link-locked{width:76px;height:76px}.stage-node-label{font-size:19px}.stage-node-icon{font-size:15px}.difficulty-map-track{padding-top:65px}}.balloon-scene{border-radius:var(--radius-lg);min-height:min(72vh,640px);box-shadow:var(--game-card-shadow,0 12px 30px #2c243824);--balloon-half-width:46px;background:linear-gradient(#6ec3f4 0%,#a7e0f5 55%,#d9f3ff 100%);padding:28px 20px;position:relative;overflow:hidden}.balloon-scene-cloud{z-index:0;background:#ffffffd9;border-radius:999px;width:90px;height:40px;position:absolute}.balloon-scene-cloud:before,.balloon-scene-cloud:after{content:"";background:inherit;border-radius:999px;position:absolute}.balloon-scene-cloud:before{width:50px;height:50px;top:-20px;left:10px}.balloon-scene-cloud:after{width:40px;height:36px;top:-14px;right:10px}.balloon-scene-cloud-1{top:8%;left:6%}.balloon-scene-cloud-2{width:70px;height:32px;top:16%;right:8%}.balloon-scene-cloud-3{opacity:.85;width:60px;height:28px;bottom:14%;left:46%}.balloon-question-card{z-index:2;text-align:center;color:#2c2438;background:#ffffffeb;border-radius:22px;max-width:380px;margin:0 auto 12px;padding:18px 28px;font-size:clamp(26px,5vw,36px);font-weight:800;position:relative;box-shadow:0 8px 20px #00000024}.balloon{z-index:1;cursor:pointer;border:none;border-radius:50%/58% 58% 42% 42%;justify-content:center;align-items:center;width:92px;height:106px;display:flex;position:absolute;box-shadow:inset -8px -10px #0000001a,0 8px 16px #0003}.balloon:disabled{cursor:default}.balloon-tried{box-shadow:inset -8px -10px #00000026,0 4px 8px #00000024}.balloon-correct{box-shadow:0 0 0 6px #22c55e8c,inset -8px -10px #0000001a,0 8px 16px #0003}.balloon-wrong-final{box-shadow:0 0 0 6px #ef444480,inset -8px -10px #0000001a,0 8px 16px #0003}.balloon-number{color:#fff;text-shadow:0 2px 3px #0000004d;font-size:30px;font-weight:900}.balloon-string{background:#5a46328c;width:2px;height:54px;position:absolute;top:100%;left:calc(50% - 1px)}.balloon-feedback{z-index:3;white-space:nowrap;border-radius:999px;padding:10px 18px;font-size:17px;font-weight:800;position:absolute;bottom:14px;left:50%;transform:translate(-50%)}.balloon-feedback-correct{background:var(--result-bg);color:var(--result-text)}.balloon-feedback-wrong{background:var(--highlight-bg);color:var(--highlight-text)}@media (width<=480px){.balloon-scene{--balloon-half-width:36px;min-height:min(65vh,480px);padding:20px 12px}.balloon{width:72px;height:84px}.balloon-string{height:38px}.balloon-number{font-size:24px}}.games-shell{flex-direction:column;display:flex}.games-main{flex-direction:column;flex:1;width:100%;display:flex}.games-home,.topic-map,.stage-game{flex:1}.stage-game-play-area{flex-direction:column;flex:1;min-height:0;display:flex;position:relative}.stage-game-play-area .balloon-scene,.stage-game-play-area .game-question{flex:1;min-height:480px}.stage-game-play-back{z-index:20;width:40px;height:40px;color:var(--game-ink,#2c2438);cursor:pointer;background:#ffffffe6;border:none;border-radius:999px;justify-content:center;align-items:center;display:inline-flex;position:absolute;top:14px;left:14px;box-shadow:0 4px 10px #0000002e}.stage-game-play-back:hover{background:#fff}