:root{--color-bg:#f0f7fb;--color-panel:#fff;--color-panel-soft:#f8fbfd;--color-text:#334155;--color-text-strong:#0f172a;--color-text-muted:#64748b;--color-border:#d9e6ee;--color-border-strong:#c3d8e5;--color-sky:#0ea5e9;--color-sky-dark:#0369a1;--color-teal:#0f766e;--color-teal-soft:#d9f6f0;--color-violet:#8b5cf6;--color-violet-soft:#efe7ff;--color-amber:#f59e0b;--color-amber-soft:#fff3d6;--color-rose:#e11d48;--color-success:#0f766e;--color-shadow:rgba(27,67,90,.1);--color-shadow-strong:rgba(16,91,122,.18);--gradient-brand:linear-gradient(135deg, #32b7f3 0%, #1fb8a8 52%, #2bb673 100%);--gradient-warm:linear-gradient(135deg, #f7ca67 0%, #f08d49 50%, #ef6d6d 100%);--gradient-violet:linear-gradient(135deg, #7c8cff 0%, #d361ff 100%);--gradient-math:linear-gradient(135deg, #30a7f5 0%, #22d3ee 100%);--gradient-reading:linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);--gradient-art:linear-gradient(135deg, #fbbf24 0%, #f97316 100%);--radius-xl:1.75rem;--radius-lg:1.25rem;--radius-md:1rem;--shadow-sm:0 8px 24px rgba(27,67,90,.08);--shadow-md:0 16px 40px rgba(27,67,90,.12);--shadow-lg:0 24px 60px rgba(16,91,122,.16);--font-sans:"Avenir Next", Avenir, "Trebuchet MS", "Segoe UI", sans-serif;--font-display:"Avenir Next", Avenir, "Trebuchet MS", "Segoe UI", sans-serif;--font-mono:"SFMono-Regular", Consolas, "Liberation Mono", monospace}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;font-size:16px}body{min-width:320px;min-height:100vh;color:var(--color-text);font:400 16px/1.5 var(--font-sans);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:radial-gradient(circle at 0 0,rgba(84,197,241,.2),transparent 28%),linear-gradient(#eef8fc 0%,#f6fbfd 100%);margin:0}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer}img,svg{max-width:100%;display:block}#root{min-height:100vh}h1,h2,h3,p,ul{margin:0}ul{padding:0;list-style:none}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.page,.exercise-page{width:100%;margin:0 auto}.page{flex-direction:column;gap:2rem;display:flex}.page--wide{max-width:72rem}.page--full{max-width:78rem}.page--narrow,.exercise-page{max-width:48rem}.page--compact{gap:1rem}.page-header{flex-direction:column;gap:.75rem;display:flex}.page__title,.panel__title,.section-heading__title,.exercise-intro__title,.exercise-result__title,.not-found__title,.onboarding__title,.dashboard-header__title,.dashboard-sidebar__title,.hero-card__title,.task-card__title,.grade-card__title{color:var(--color-text-strong);font-family:var(--font-display);letter-spacing:-.03em;font-weight:800}.page__title,.hero-card__title,.exercise-intro__title{font-size:2.15rem;line-height:1.1}.page__lead,.panel__text,.section-heading__text,.exercise-intro__text,.exercise-result__text,.not-found__text,.onboarding__lead,.task-card__text,.progress-row__text{color:var(--color-text-muted)}.page__lead--narrow{max-width:42rem}.panel,.placeholder-card,.notice,.empty-state,.voice-card,.exercise-card,.exercise-result,.grade-card,.onboarding__card{border:1px solid var(--color-border);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);background:rgba(255,255,255,.96)}.button{border:1px solid transparent;border-radius:1rem;justify-content:center;align-items:center;gap:.5rem;min-height:3rem;padding:.85rem 1.35rem;font-size:.95rem;font-weight:800;transition:background-color .2s,border-color .2s,color .2s,transform .2s,box-shadow .2s;display:inline-flex}.button:hover,.button:focus{transform:translateY(-1px)}.button--primary{color:#fff;background:linear-gradient(90deg,#22a6f2 0%,#159d95 100%);box-shadow:0 14px 30px rgba(24,156,174,.25)}.button--light{color:var(--color-teal);background:#fff;box-shadow:0 10px 24px rgba(12,92,112,.16)}.button--ghost-light{color:#fff;background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.5)}.button--secondary{color:var(--color-text-strong);border-color:var(--color-border);background:#fff}.button--teal{color:#fff;background:#0f9f8c}.button--soft-teal{color:#0b6d63;background:#ecfcf8;border-color:#9fe3d8}.button--block{width:100%}.field-input,.field-select{width:100%;color:var(--color-text-strong);background:#fff;border:1px solid #bfe0ed;border-radius:1rem;padding:.9rem 1rem;box-shadow:inset 0 1px 2px rgba(15,23,42,.02)}.field-input:focus,.field-select:focus{outline-offset:1px;border-color:var(--color-sky);outline:2px solid rgba(14,165,233,.25)}.field-input::placeholder{color:#94a3b8}.form-error{color:var(--color-rose);margin-top:.5rem;font-size:.9rem;font-weight:700}.dashboard-shell{min-height:100vh;color:var(--color-text-strong);background:0 0;display:flex}.dashboard-overlay{z-index:40;opacity:0;pointer-events:none;background:rgba(15,23,42,.32);position:fixed;top:0;bottom:0;left:0;right:0}.dashboard-overlay--open{opacity:1;pointer-events:auto}.dashboard-sidebar{z-index:50;width:min(17.5rem,88vw);box-shadow:var(--shadow-lg);background:linear-gradient(#e8f4fc 0%,#f7fbfd 100%);border-right:1px solid rgba(255,255,255,.7);flex-direction:column;padding:1.25rem;transition:transform .2s;display:flex;position:fixed;top:0;bottom:0;left:0;transform:translate(-100%)}.dashboard-sidebar--open{transform:translate(0)}.dashboard-sidebar__brand-row,.dashboard-sidebar__brand,.dashboard-header,.dashboard-header__group,.dashboard-switch-user,.dashboard-nav__link,.hero-card__actions,.section-heading,.grade-card__header,.grade-card__topic,.exercise-card__top,.exercise-toolbar,.exercise-toggle,.exercise-result__actions,.compare-panels,.number-sequence,.exercise-options,.task-grid,.progress-grid,.test-progress-grid{display:flex}.dashboard-sidebar__brand-row,.dashboard-header,.grade-card__header,.exercise-card__top,.section-heading{justify-content:space-between;align-items:center}.dashboard-sidebar__brand,.dashboard-header__group,.dashboard-switch-user,.dashboard-nav__link,.exercise-toolbar,.exercise-toggle{align-items:center;gap:.75rem}.dashboard-sidebar__brand-row{margin-bottom:2rem}.dashboard-sidebar__brand-icon,.onboarding__logo{object-fit:cover;box-shadow:var(--shadow-md);display:block}.dashboard-sidebar__brand-icon{border-radius:1.35rem;width:4rem;height:4rem}.dashboard-sidebar__brand-text{min-width:0}.dashboard-sidebar__eyebrow,.exercise-intro__eyebrow,.hero-card__eyebrow,.voice-card__label,.dashboard-header__eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.75rem;font-weight:800}.dashboard-sidebar__eyebrow{color:rgba(3,105,161,.8)}.dashboard-sidebar__title,.dashboard-header__title{font-size:1.15rem}.dashboard-sidebar__close,.dashboard-menu-button{width:2.75rem;height:2.75rem;color:var(--color-text-muted);background:#fff;border:1px solid transparent;border-radius:.9rem;justify-content:center;align-items:center;display:inline-flex}.dashboard-sidebar__nav{flex:1;min-height:0;overflow-y:auto}.dashboard-nav{flex-direction:column;gap:.4rem;display:flex}.dashboard-nav__link{color:var(--color-text);border-radius:1rem;padding:.85rem 1rem;font-weight:700}.dashboard-nav__link:hover{color:var(--color-text-strong);background:rgba(255,255,255,.7)}.dashboard-nav__link--active{color:var(--color-sky-dark);background:#fff;box-shadow:0 4px 14px rgba(53,127,173,.1)}.dashboard-nav__icon{color:#fff;background:linear-gradient(135deg,#4bb7f4 0%,#24c5a8 100%);border-radius:.85rem;justify-content:center;align-items:center;width:2.25rem;height:2.25rem;display:inline-flex;box-shadow:inset 0 1px rgba(255,255,255,.25)}.dashboard-sidebar__footer{border-top:1px solid rgba(191,224,237,.9);margin-top:auto;padding-top:1rem}.sidebar-counter{background:linear-gradient(135deg,#fff 0%,#eef9ff 100%);border:1px solid #d6ebf7;border-radius:1rem;margin-bottom:.75rem;padding:1rem}.sidebar-counter__label{color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;font-weight:700}.sidebar-counter__value{color:var(--color-sky-dark);font-family:var(--font-display);margin-top:.35rem;font-size:1.8rem;font-weight:800}.sidebar-counter__meta{color:var(--color-text);margin-top:.25rem;font-size:.85rem}.dashboard-tip{background:rgba(255,255,255,.8);border:1px solid #dbeef7;border-radius:1rem;margin-bottom:.75rem;padding:1rem;display:none}.dashboard-tip__title{color:var(--color-text);font-size:.92rem;font-weight:700}.dashboard-tip__text,.dashboard-sidebar__note{color:var(--color-text-muted)}.dashboard-switch-user{border:1px solid var(--color-border);width:100%;color:var(--color-text);box-shadow:var(--shadow-sm);background:rgba(255,255,255,.92);border-radius:1rem;justify-content:center;padding:.85rem 1rem;font-weight:700}.dashboard-sidebar__note{text-align:center;margin-top:.75rem;font-size:.7rem;line-height:1.35}.dashboard-main{flex-direction:column;flex:1;min-width:0;display:flex}.dashboard-header{z-index:30;background:rgba(240,247,251,.96);border-bottom:1px solid rgba(191,224,237,.9);gap:1rem;padding:.9rem 1rem;position:sticky;top:0}.dashboard-menu-button__line{background:currentColor;width:1.2rem;height:2px;margin:.1rem 0;display:block}.dashboard-header__eyebrow{color:var(--color-text-muted)}.dashboard-header__group--right{gap:.5rem}.dashboard-streak{color:#8a5c00;background:#fff0bf;border:1px solid #f4d98d;border-radius:999px;padding:.45rem .8rem;font-size:.78rem;font-weight:800;display:none}.dashboard-avatar{background:var(--gradient-violet);color:#fff;width:2.5rem;height:2.5rem;box-shadow:var(--shadow-sm);border-radius:999px;justify-content:center;align-items:center;font-size:.78rem;font-weight:800;display:inline-flex}.dashboard-content{flex:1;padding:1.5rem 1rem 2rem}.hero-card{background:var(--gradient-brand);color:#fff;border-radius:2rem;padding:1.5rem;position:relative;overflow:hidden;box-shadow:0 24px 60px rgba(19,133,138,.22)}.hero-card__glow{background:rgba(255,255,255,.22);border-radius:999px;position:absolute}.hero-card__glow--top{width:12rem;height:12rem;top:-3rem;right:-3rem}.hero-card__glow--bottom{background:rgba(110,255,217,.18);width:14rem;height:8rem;bottom:-2rem;left:30%}.hero-card__grid{gap:1.5rem;display:grid;position:relative}.hero-card__logo{object-fit:cover;border-radius:1.7rem;width:max(5.5rem,min(18vw,8rem));height:max(5.5rem,min(18vw,8rem));margin-bottom:1rem;display:block;box-shadow:0 18px 42px rgba(7,40,58,.18)}.hero-card__eyebrow{color:rgba(255,255,255,.92);font-size:.92rem;font-weight:700}.hero-card__title{color:#07283a;margin-top:.5rem}.hero-card__text{color:rgba(255,255,255,.92);max-width:38rem;margin-top:.8rem}.hero-card__actions{flex-wrap:wrap;gap:.75rem;margin-top:1.5rem}.hero-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:.75rem;display:grid}.hero-stats__card{text-align:center;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.24);border-radius:1rem;padding:.9rem .8rem}.hero-stats__icon{font-size:1.5rem}.hero-stats__value{color:#fff;font-family:var(--font-display);margin-top:.5rem;font-size:1.7rem;font-weight:800}.hero-stats__label{color:rgba(255,255,255,.82);font-size:.78rem;font-weight:700}.section-heading{margin-bottom:1rem}.section-heading--compact{margin-bottom:.75rem}.task-grid,.grade-grid,.progress-grid,.test-progress-grid{gap:1rem}.task-grid,.grade-grid{display:grid}.task-card{border-radius:var(--radius-xl);text-align:left;flex-direction:column;height:100%;padding:1.25rem;display:flex}.task-card--disabled{border:1px dashed var(--color-border);opacity:.75;background:rgba(255,255,255,.65)}.task-card--link{box-shadow:var(--shadow-sm);background:#fff;border:1px solid #d8edf7}.task-card--link:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.task-card__emoji{color:#fff;width:3rem;height:3rem;box-shadow:var(--shadow-sm);border-radius:1rem;justify-content:center;align-items:center;font-size:1.5rem;display:inline-flex}.task-card__emoji--math{background:var(--gradient-math)}.task-card__emoji--reading{background:var(--gradient-reading)}.task-card__emoji--art{background:var(--gradient-art)}.task-card__title{margin-top:1rem;font-size:1.15rem}.task-card__text{margin-top:.35rem;font-size:.94rem}.task-card__cta{color:var(--color-sky-dark);margin-top:1rem;font-size:.92rem;font-weight:800}.panel{padding:1.5rem}.usage-lock__button{margin-top:1rem}.usage-overlay{z-index:80;justify-content:center;align-items:center;padding:1rem;display:flex;position:fixed;top:0;bottom:0;left:0;right:0}.usage-overlay__backdrop{backdrop-filter:blur(4px);background:rgba(15,23,42,.58);position:absolute;top:0;bottom:0;left:0;right:0}.usage-overlay__card{text-align:center;background:linear-gradient(#fff 0%,#f4fbff 100%);border:1px solid #d6ebf7;border-radius:1.75rem;width:min(100%,30rem);padding:2rem;position:relative;box-shadow:0 26px 70px rgba(15,23,42,.24)}.usage-overlay__emoji{font-size:3rem}.usage-overlay__title{color:var(--color-text-strong);font-family:var(--font-display);margin-top:.5rem;font-size:2rem;font-weight:800}.usage-overlay__text{color:var(--color-text-muted);margin-top:.6rem}.usage-overlay__actions{flex-direction:column;gap:.75rem;margin-top:1.5rem;display:flex}.usage-overlay__input{text-align:center}.usage-overlay__error{margin-top:.75rem}.panel__text{margin-top:.35rem}.progress-grid{margin-top:1.5rem;display:grid}.test-progress-grid{margin-top:1rem;display:grid}.test-progress-card{border-radius:var(--radius-xl);height:100%;color:var(--color-text);box-shadow:var(--shadow-sm);background:radial-gradient(circle at 100% 0,rgba(125,211,252,.26),transparent 40%),#fff;border:1px solid #d8edf7;flex-direction:column;gap:1rem;padding:1.25rem;display:flex}.test-progress-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.test-progress-card__eyebrow{color:var(--color-sky-dark);letter-spacing:.06em;text-transform:uppercase;font-size:.78rem;font-weight:900}.test-progress-card__title{color:var(--color-text-strong);margin-top:.2rem;font-size:1.1rem;font-weight:900}.test-progress-card__stats,.test-progress-card__empty{color:var(--color-text-muted);font-size:.92rem;font-weight:700;line-height:1.45}.test-progress-card__stats strong{color:var(--color-text-strong)}.test-progress-card__cta{color:var(--color-sky-dark);margin-top:auto;font-size:.92rem;font-weight:900}.test-chart{background:linear-gradient(rgba(240,249,255,.86),rgba(255,255,255,.58)),repeating-linear-gradient(135deg,rgba(56,189,248,.07) 0,rgba(56,189,248,.07) .45rem,transparent .45rem,transparent .9rem);border-radius:1rem;width:100%;min-height:8rem;overflow:visible}.test-chart--empty{min-height:8rem;color:var(--color-text-muted);justify-content:center;align-items:center;font-size:.86rem;font-weight:800;display:flex}.test-chart__grid{stroke:rgba(148,163,184,.32);stroke-dasharray:4 5}.test-chart__tick,.test-chart__axis-label{fill:var(--color-text-muted);font-size:.68rem;font-weight:800}.test-chart__line{fill:none;stroke-linecap:round;stroke-linejoin:round;stroke-width:5px;filter:drop-shadow(0 7px 9px rgba(14,165,233,.18))}.test-chart__dot{fill:#fff;stroke:#14b8a6;stroke-width:4px}.progress-row__meta{color:var(--color-text);justify-content:space-between;align-items:center;font-size:.92rem;font-weight:700;display:flex}.progress-row__track,.progress-bar{background:#e8f0f5;border-radius:999px;height:.75rem;margin-top:.5rem;overflow:hidden}.progress-row__fill,.progress-bar__fill{border-radius:inherit;height:100%}.progress-row__fill--math{background:linear-gradient(90deg,#2bb3f3 0%,#3dd0d0 100%)}.progress-row__fill--reading{background:linear-gradient(90deg,#8b5cf6 0%,#a855f7 100%)}.progress-bar__fill{background:linear-gradient(90deg,#2bc3ad 0%,#2fa7ee 100%)}.progress-row__text{margin-top:.5rem;font-size:.9rem}.notice{color:#7c5400;background:var(--color-amber-soft);border-color:#f1d186;padding:1rem}.notice__title{font-size:.92rem;font-weight:800}.notice__text{margin-top:.35rem}.notice__link{color:#8a5c00;font-weight:800;text-decoration:underline}.empty-state,.placeholder-card{text-align:center;color:var(--color-text-muted);border-style:dashed;padding:2rem}.placeholder-card--reading{padding:2.5rem}.grade-grid{grid-template-columns:1fr}.grade-card{flex-direction:column;padding:1.25rem;display:flex}.grade-card--early{border-color:#bcefdc}.grade-card--primary{border-color:#c5e9fb}.grade-card--middle{border-color:#ddd2ff}.grade-card--high{border-color:#d5dbff}.grade-card__badge{border-radius:999px;align-items:center;max-width:11rem;padding:.25rem .65rem;font-size:.72rem;font-weight:800;line-height:1.3;display:inline-flex}.grade-card__badge--early{color:#146c43;background:#d9f6e8}.grade-card__badge--primary{color:#075985;background:#dff4fe}.grade-card__badge--middle{color:#6d28d9;background:#f0e9ff}.grade-card__badge--high{color:#4338ca;background:#e4e9ff}.grade-card__dot{border-radius:999px;width:.55rem;height:.55rem;margin-top:.25rem}.grade-card__dot--early{background:#22c55e}.grade-card__dot--primary{background:#0ea5e9}.grade-card__dot--middle{background:#8b5cf6}.grade-card__dot--high{background:#6366f1}.grade-card__title{margin-top:.7rem;font-size:1.15rem;line-height:1.25}.grade-card__stats{color:var(--color-text);margin-top:.65rem;font-size:.9rem;font-weight:700}.grade-card__stats--muted,.grade-card__coming-soon{color:#94a3b8}.grade-card__topics{border-top:1px solid #e8f0f5;flex:1;margin-top:.9rem;padding-top:.9rem}.grade-card__topic{color:var(--color-text);gap:.5rem;margin-top:.55rem;font-size:.92rem}.grade-card__bullet{color:#cbd5e1;font-weight:800}.grade-card__topic-link,.grade-card__cta,.exercise-page__back-link{color:var(--color-teal);font-weight:700}.grade-card__topic-link,.notice__link,.exercise-page__back-link{text-decoration:underline}.topic-stars{color:#f59e0b;letter-spacing:0;vertical-align:baseline;flex-wrap:wrap;gap:.15rem;margin-left:.45rem;font-size:.95em;display:inline-flex}.grade-card__cta{margin-top:1rem;font-size:.9rem;display:inline-flex}.grade-card__cta-list{flex-direction:column;gap:.3rem;margin-top:.7rem;display:flex}.grade-card__coming-soon{margin-top:1rem;font-size:.78rem}.onboarding{justify-content:center;align-items:center;min-height:100vh;padding:2.5rem 1rem;display:flex}.onboarding__card{width:100%;max-width:30rem;padding:2rem}.onboarding__logo-wrap{justify-content:center;margin-bottom:1.5rem;display:flex}.onboarding__logo{border-radius:2.4rem;width:max(7rem,min(32vw,10rem));height:max(7rem,min(32vw,10rem))}.onboarding__title,.onboarding__lead{text-align:center}.onboarding__lead{margin-top:.5rem;font-size:.95rem}.onboarding__form{flex-direction:column;gap:1rem;margin-top:2rem;display:flex}.settings-form{flex-direction:column;gap:.85rem;display:flex}.settings-form__label,.settings-stat__label{color:var(--color-text);font-size:.92rem;font-weight:700}.settings-form__hint{color:var(--color-text-muted);font-size:.85rem}.settings-form__saved{color:var(--color-success);font-size:.9rem;font-weight:700}.settings-stats{gap:1rem;margin-top:1rem;display:grid}.settings-stat{background:var(--color-panel-soft);border:1px solid var(--color-border);border-radius:1rem;padding:1rem}.settings-stat__value{color:var(--color-text-strong);font-family:var(--font-display);margin-top:.35rem;font-size:1.3rem;font-weight:800}.not-found{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:1rem;min-height:100vh;padding:1.5rem;display:flex}.not-found__code{color:#8fd1f3;font-family:var(--font-display);font-size:4.5rem;font-weight:800}.not-found__text{max-width:22rem}.not-found__button{margin-top:.25rem}.exercise-page{padding-bottom:2rem}.exercise-page__back{margin-bottom:1.25rem;font-size:.9rem;font-weight:700}.exercise-intro{border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);background:linear-gradient(135deg,#ecfbf4 0%,#effcfb 100%);border:1px solid #bcefdc;padding:1.5rem}.exercise-intro__eyebrow{color:#13815e}.exercise-intro__text{margin-top:.5rem;font-size:.95rem}.exercise-intro__hint{margin-top:.35rem;font-weight:700;display:block}.exercise-intro__hint--ok{color:#0f766e}.exercise-intro__hint--warn{color:#b45309}.voice-card{margin-top:1rem;padding:1rem}.voice-card__label{color:var(--color-text)}.voice-card__text{color:var(--color-text-muted);margin-top:.5rem;font-size:.8rem}.exercise-result{text-align:center;padding:2rem}.exercise-result__mascot{object-fit:cover;border-radius:2.2rem;width:max(7rem,min(28vw,11rem));height:max(7rem,min(28vw,11rem));margin:0 auto 1rem;display:block;box-shadow:0 20px 45px rgba(14,165,233,.18)}.exercise-result__text{margin-top:.5rem}.exercise-result__score{color:var(--color-teal);font-weight:800}.exercise-result__actions{flex-wrap:wrap;justify-content:center;gap:.75rem;margin-top:1.5rem}.exercise-card{padding:1.5rem}.exercise-card__top{flex-direction:column;gap:.75rem}.exercise-card__meta{color:var(--color-text-muted);text-align:center;font-size:.92rem;font-weight:700}.exercise-toolbar{flex-wrap:wrap;justify-content:center}.exercise-toggle{color:var(--color-text);font-size:.92rem;font-weight:700}.exercise-toggle__input{width:1rem;height:1rem}.exercise-card__body{margin-top:2.25rem}.exercise-face{text-align:center}.exercise-face__label{letter-spacing:0;max-width:34rem;margin:0 auto;font-size:1.2rem;font-weight:800;line-height:1.25}.exercise-face__label--sky{color:var(--color-sky)}.exercise-face__label--violet{color:var(--color-violet)}.exercise-face__label--amber{color:var(--color-amber)}.exercise-face__label--green{color:var(--color-success)}.symbol-row{flex-wrap:wrap;justify-content:center;gap:.7rem;padding:1.75rem 0;font-size:3.2rem;display:flex}.symbol-row--compact{padding:.75rem 0;font-size:2.7rem}.symbol-row--scattered{max-width:15rem;margin:0 auto}.symbol-row--scattered span:nth-child(2n){transform:translateY(.3rem)}.symbol-row--scattered span:nth-child(3n){transform:translate(-.15rem,-.2rem)}.ten-frame{grid-template-columns:repeat(5,1fr);gap:.5rem;max-width:15rem;margin:1.5rem auto 0;display:grid}.ten-frame--twenty{grid-template-columns:repeat(10,1fr);max-width:18rem}.ten-frame__cell{background:#eff6ff;border:2px solid #bfdbfe;border-radius:.8rem;width:2.35rem;height:2.35rem}.ten-frame--twenty .ten-frame__cell{border-radius:.5rem;width:1.45rem;height:1.45rem}.ten-frame__cell--filled{background:linear-gradient(135deg,#38bdf8 0%,#22c55e 100%);border-color:#38bdf8}.ordinal-row,.number-compare,.compare-shapes,.size-compare{flex-wrap:wrap;justify-content:center;gap:.75rem;margin-top:1.5rem;display:flex}.ordinal-row__item,.number-compare__item,.compare-shapes__item,.size-compare__item{background:#f8fafc;border:1px solid #d7e8f1;border-radius:1rem;justify-content:center;align-items:center;min-width:3.5rem;min-height:3.5rem;padding:.75rem;display:inline-flex}.ordinal-row__item{font-size:2rem}.ordinal-row__item--target{background:#ede9fe;border-color:#c4b5fd}.number-compare__item{color:var(--color-sky-dark);font-size:2rem;font-weight:900}.compare-panels{flex-wrap:wrap;justify-content:center;align-items:flex-end;gap:1rem;margin-top:1.75rem}.compare-panel{border-radius:var(--radius-xl);background:rgba(248,250,252,.85);border:2px solid #e2e8f0;padding:1.15rem 1.35rem}.compare-panel--button{min-width:9rem;min-height:6.5rem;color:var(--color-text-strong);font-size:1.45rem;font-weight:800}.compare-panel__arrow{color:var(--color-text-muted);margin-bottom:.5rem;font-size:.78rem;font-weight:800}.number-sequence{flex-wrap:wrap;justify-content:center;align-items:center;gap:.5rem;margin-top:2rem}.trace-number{width:10rem;height:11.875rem;margin:1.5rem auto 0;position:relative}.trace-number__lines{width:100%;height:100%}.trace-number__guide,.trace-number__stroke{fill:none;stroke-linecap:round;stroke-linejoin:round}.trace-number__guide{stroke:#bfdbfe;stroke-width:16px;stroke-dasharray:5 7}.trace-number__stroke{stroke:#14b8a6;stroke-width:13px}.trace-number__dot{background:#fff;border:0;border-radius:999px;width:1.1rem;height:1.1rem;margin-top:-.55rem;margin-left:-.55rem;position:absolute;box-shadow:0 0 0 3px #7dd3fc,0 8px 18px rgba(14,165,233,.18)}.trace-number__dot--done{background:#14b8a6;box-shadow:0 0 0 3px #99f6e4,0 8px 18px rgba(20,184,166,.2)}.trace-number__hint{color:var(--color-text-muted);margin-top:1rem;font-size:.92rem;font-weight:700}.put-together{flex-wrap:wrap;justify-content:center;align-items:center;gap:1rem;margin-top:1.5rem;display:flex}.put-together__group{background:#f8fafc;border:1px solid #d7e8f1;border-radius:1.2rem;min-width:8rem;padding:.85rem 1rem}.put-together__plus{color:var(--color-success);font-size:2rem;font-weight:900}.grade1-sequence{flex-wrap:wrap;justify-content:center;gap:.65rem;margin-top:1.75rem;display:flex}.grade1-equation{color:var(--color-text-strong);letter-spacing:-.04em;margin-top:1.5rem;font-size:max(2.4rem,min(8vw,4.6rem));font-weight:900}.place-value-model{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:1rem;max-width:28rem;margin:1.75rem auto 0;display:grid}.place-value-model__group{background:#f8fafc;border:2px solid #d7e8f1;border-radius:1.2rem;flex-wrap:wrap;place-content:center;gap:.45rem;min-height:8rem;padding:1rem;display:flex}.place-value-model__ten,.place-value-model__one{box-shadow:var(--shadow-sm);justify-content:center;align-items:center;font-weight:900;display:inline-flex}.place-value-model__ten{color:#0f766e;background:#d7fbf4;border-radius:.8rem;width:2.35rem;height:4.5rem;font-size:1rem}.place-value-model__one{background:#fde68a;border-radius:999px;width:1.35rem;height:1.35rem}.measure-strip{justify-content:center;gap:.15rem;margin:1.75rem auto 0;display:flex}.measure-strip__unit{background:#fff7df;border:2px solid #f2b948;border-radius:.45rem;width:1.8rem;height:3rem}.clock-face{width:11rem;height:11rem;margin:1.5rem auto 0;display:block}.clock-face__rim{fill:#fff;stroke:#7dd3fc;stroke-width:5px}.clock-face__number{fill:var(--color-text-strong);font-size:.9rem;font-weight:900}.clock-face__hand{stroke:var(--color-text-strong);stroke-linecap:round}.clock-face__hand--minute{stroke-width:4px}.clock-face__hand--hour{stroke-width:6px}.clock-face__center{fill:#14b8a6}.coin-row{flex-wrap:wrap;justify-content:center;gap:.65rem;margin-top:1.5rem;display:flex}.coin-row .coin-token{margin:0}.compare-symbol-choice{flex-direction:column;justify-content:center;align-items:center;gap:.25rem;min-width:7rem;min-height:6.25rem;display:inline-flex}.compare-symbol-choice__symbol{font-size:2.9rem;font-weight:950;line-height:.9}.compare-symbol-choice__text{color:var(--color-text-muted);font-size:.95rem;font-weight:850}.number-chip{border-radius:1rem;justify-content:center;align-items:center;width:3.5rem;height:4rem;font-size:2rem;font-weight:800;display:inline-flex}.number-chip--filled{color:var(--color-text-strong);background:#d7fbf4;border:2px solid #95e5d8}.number-chip--missing{color:#b45309;background:#fff4dc;border:2px dashed #f2b948}.exercise-number{color:#0b8dd0;margin-top:1.5rem;font-size:4rem;font-weight:900}.exercise-options{flex-wrap:wrap;justify-content:center;gap:.9rem;max-width:26rem;margin:1rem auto 0;display:flex}.exercise-options--wide{max-width:34rem;margin-top:1.75rem}.exercise-options--stacked{flex-direction:column;max-width:28rem}.choice-button{min-width:4.5rem;min-height:4.5rem;color:var(--color-text-strong);box-shadow:var(--shadow-sm);touch-action:manipulation;background:#fff;border-radius:1rem;padding:1rem 1.25rem;font-size:1.65rem;font-weight:800}.choice-button:disabled{opacity:.6}.choice-button--sky{border:2px solid #c5e9fb}.choice-button--violet{border:2px solid #ddd2ff}.choice-button--amber{border:2px solid #f5db9d}.choice-button--green{border:2px solid #a7f3d0}.choice-button--arrow{min-width:6rem;min-height:5rem;font-size:2.35rem}.choice-button--word{min-width:9.5rem;min-height:4.75rem;font-size:1.15rem;line-height:1.2}.choice-button--plain{border:2px solid #d7e8f1;justify-content:center;align-items:center;min-width:5rem;min-height:5rem;display:inline-flex}.choice-button--group{min-width:10rem;min-height:6.25rem}.choice-button--sequence{width:100%;min-height:5.5rem}.size-sequence{justify-content:center;align-items:center;gap:1rem;display:inline-flex}.size-sequence__item{justify-content:center;align-items:center;min-width:3rem;display:inline-flex}.visual-target{justify-content:center;margin-top:1.5rem;margin-bottom:.5rem;display:flex}.color-token{width:3.5rem;height:3.5rem;box-shadow:var(--shadow-sm);border:3px solid rgba(15,23,42,.08);border-radius:999px;display:inline-block}.color-token--red{background:#ef4444}.color-token--blue{background:#3b82f6}.color-token--yellow{background:#facc15}.color-token--green{background:#22c55e}.shape-option{justify-content:center;align-items:center;width:3.75rem;height:3.75rem;display:inline-flex}.shape-glyph{width:3rem;height:3rem;display:inline-block}.shape-glyph--red{background:#ef4444}.shape-glyph--blue{background:#3b82f6}.shape-glyph--yellow{background:#facc15}.shape-glyph--green{background:#22c55e}.shape-glyph--violet{background:#8b5cf6}.shape-glyph--circle{border-radius:999px}.shape-glyph--square{border-radius:.45rem}.shape-glyph--rectangle{border-radius:.45rem;width:3.8rem;height:2.35rem}.shape-glyph--triangle{width:0;height:0;color:inherit;background:0 0;border-bottom:2.35rem solid;border-left:1.25rem solid transparent;border-right:1.25rem solid transparent}.shape-glyph--triangle.shape-glyph--red{color:#ef4444}.shape-glyph--triangle.shape-glyph--blue{color:#3b82f6}.shape-glyph--triangle.shape-glyph--yellow{color:#facc15}.shape-glyph--triangle.shape-glyph--green{color:#22c55e}.shape-glyph--triangle.shape-glyph--violet{color:#8b5cf6}.shape-glyph--diamond{border-radius:.35rem;transform:rotate(45deg)}.shape-glyph--star{background:0 0;position:relative}.shape-glyph--star:before{content:"★";font-size:2.5rem;line-height:1;position:absolute;top:0;bottom:0;left:0;right:0}.shape-glyph--star.shape-glyph--red:before{color:#ef4444}.shape-glyph--star.shape-glyph--blue:before{color:#3b82f6}.shape-glyph--star.shape-glyph--yellow:before{color:#facc15}.shape-glyph--star.shape-glyph--green:before{color:#22c55e}.shape-glyph--star.shape-glyph--violet:before{color:#8b5cf6}.position-scene{background:linear-gradient(90deg,transparent 32%,#e2e8f0 32%,#e2e8f0 34%,transparent 34%,transparent 66%,#e2e8f0 66%,#e2e8f0 68%,transparent 68%),linear-gradient(transparent 48%,#e2e8f0 48%,#e2e8f0 52%,transparent 52%),#f8fafc;border:2px solid #d7e8f1;border-radius:1rem;width:min(18rem,100%);height:10rem;margin:1.5rem auto .5rem;position:relative}.position-marker{width:2.5rem;height:2.5rem;box-shadow:var(--shadow-sm);background:#ddd2ff;border:3px solid #7c3aed;border-radius:999px;font-size:2.5rem;position:absolute;transform:translate(-50%,-50%)}.position-scene--kairėje .position-marker{top:50%;left:17%}.position-scene--viduryje .position-marker{top:50%;left:50%}.position-scene--dešinėje .position-marker{top:50%;left:83%}.position-scene--viršuje .position-marker{top:24%;left:50%}.position-scene--apačioje .position-marker{top:76%;left:50%}.position-scene--viduje .position-marker{top:50%;left:50%}.position-scene--išorėje .position-marker{top:12%;left:93%}.coin-token{color:#7c5400;width:5rem;height:5rem;box-shadow:var(--shadow-sm);background:#f9d37a;border:4px solid #d6a233;border-radius:999px;justify-content:center;align-items:center;margin:1.5rem auto .5rem;font-size:1.25rem;font-weight:900;display:inline-flex}.solid-token{width:6rem;height:6rem;box-shadow:var(--shadow-sm);background:#f0f9ff;border:2px solid #c5e9fb;border-radius:1rem;justify-content:center;align-items:center;margin:1.5rem auto .5rem;font-size:3rem;display:flex;position:relative}.solid-token--sphere{background:radial-gradient(circle at 32% 28%,#fff 0,#fff 12%,#93c5fd 13%,#93c5fd 35%,#2563eb 100%);border-radius:999px}.solid-token--cube:before{content:"";background:linear-gradient(135deg,#dff4fe 0%,#38bdf8 100%);border:3px solid #0ea5e9;border-radius:.5rem;width:3.5rem;height:3.5rem;box-shadow:.45rem .45rem #bae6fd}.solid-token--cone{background:#fff7ed}.solid-token--cone:before{content:"";border-bottom:4.6rem solid #f59e0b;border-left:2.1rem solid transparent;border-right:2.1rem solid transparent;width:0;height:0}.solid-token--cylinder{background:#f0fdf4}.solid-token--cylinder:before{content:"";background:linear-gradient(90deg,#dcfce7 0%,#86efac 50%,#22c55e 100%);border:3px solid #16a34a;border-radius:999px/1.1rem;width:3.4rem;height:4.3rem}.token-row{flex-wrap:wrap;justify-content:center;align-items:center;gap:.45rem;max-width:18rem;margin:0 auto;display:flex}.token-row--compact{max-width:10rem}.token-row--scattered .math-token:nth-child(2n){transform:translateY(.3rem)}.token-row--scattered .math-token:nth-child(3n){transform:translate(-.15rem,-.2rem)}.math-token{width:2.15rem;height:2.15rem;box-shadow:var(--shadow-sm);background:linear-gradient(135deg,#dff4fe 0%,#38bdf8 100%);border:2px solid #38bdf8;border-radius:.55rem;display:inline-block}.math-token--sky{background:linear-gradient(135deg,#dff4fe 0%,#38bdf8 100%);border:2px solid #38bdf8}.math-token--green{background:linear-gradient(135deg,#dcfce7 0%,#22c55e 100%);border:2px solid #22c55e}.math-token--amber{background:linear-gradient(135deg,#fef3c7 0%,#f59e0b 100%);border:2px solid #f59e0b}.math-token--violet{background:linear-gradient(135deg,#ede9fe 0%,#8b5cf6 100%);border:2px solid #8b5cf6}.math-token--rose{background:linear-gradient(135deg,#ffe4e6 0%,#fb7185 100%);border:2px solid #fb7185}.math-token--cookie{background:#c7853d;border-color:#8b5a2b;border-radius:999px;position:relative}.math-token--cookie:before,.math-token--cookie:after{content:"";background:#6f3f18;border-radius:999px;width:.28rem;height:.28rem;position:absolute}.math-token--cookie:before{top:.5rem;left:.45rem;box-shadow:.65rem .45rem #6f3f18}.math-token--cookie:after{top:.4rem;right:.45rem}.math-token--coin{background:#f9d37a;border:3px solid #d6a233;border-radius:999px}.pattern-shape{background:#8b5cf6;width:2.5rem;height:2.5rem;display:inline-block}.pattern-shape--circle{border-radius:999px}.pattern-shape--triangle{background:0 0;border-bottom:2.6rem solid #8b5cf6;border-left:1.35rem solid transparent;border-right:1.35rem solid transparent;width:0;height:0}.size-visual{flex-direction:column;justify-content:flex-end;align-items:center;gap:.45rem;min-width:6rem;min-height:4.5rem;display:inline-flex}.size-visual>span:first-child{background:linear-gradient(135deg,#dff4fe 0%,#38bdf8 100%);border:2px solid #38bdf8;border-radius:.45rem;display:block}.size-visual__label{color:var(--color-text);font-size:.95rem;font-weight:800}.size-visual--long>span:first-child{width:5.25rem;height:1.1rem}.size-visual--short>span:first-child{width:2.75rem;height:1.1rem}.size-visual--tall>span:first-child{width:1.6rem;height:3.8rem}.size-visual--low>span:first-child{width:1.6rem;height:2.2rem}.size-visual--wide>span:first-child{width:5rem;height:2rem}.size-visual--narrow>span:first-child{width:2.4rem;height:2rem}.size-visual--light>span:first-child{background:#fef3c7;border-color:#f59e0b;border-radius:999px;width:2rem;height:2rem}.size-visual--heavy>span:first-child{background:#94a3b8;border-color:#475569;border-radius:999px;width:3.3rem;height:3.3rem}.size-visual--small-cup>span:first-child{background:#d7fbf4;border-color:#2bc3ad;border-radius:.35rem .35rem .8rem .8rem;width:2.4rem;height:2.6rem}.size-visual--large-bucket>span:first-child{background:#d7fbf4;border-color:#2bc3ad;border-radius:.35rem .35rem .9rem .9rem;width:4rem;height:3.4rem}.math-model{color:var(--color-text-strong);flex-wrap:wrap;justify-content:center;align-items:center;gap:.65rem;margin-top:1rem;font-size:2rem;font-weight:900;display:flex}.math-model--subtraction{flex-wrap:nowrap;gap:.5rem}.math-model--subtraction .token-row{flex:0 auto;margin:0}.math-model--subtraction .token-row--compact{max-width:9.25rem}.math-operator{flex:none;line-height:1}.pattern-strip{flex-wrap:wrap;justify-content:center;gap:.65rem;margin-top:1.75rem;display:flex}.pattern-slot{background:#f8fafc;border:1px solid #d7e8f1;border-radius:1rem;justify-content:center;align-items:center;min-width:4.25rem;height:4.25rem;padding:0 .55rem;display:inline-flex}.pattern-slot--missing{color:#b45309;background:#fff4dc;border:2px dashed #f2b948;font-size:2.25rem;font-weight:800}.size-token{background:linear-gradient(135deg,#34d399 0%,#38bdf8 100%);border-radius:999px;display:inline-block}.size-token--small{width:1.2rem;height:1.2rem}.size-token--medium{width:1.7rem;height:1.7rem}.size-token--big{width:2.2rem;height:2.2rem}.exercise-feedback{text-align:center;margin-top:1.5rem;font-size:1.05rem;font-weight:800}.exercise-feedback--ok{color:var(--color-success)}.exercise-feedback--bad{color:var(--color-rose)}@media (min-width:700px){.task-grid,.progress-grid,.test-progress-grid,.settings-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.usage-overlay__actions{align-items:center}.usage-overlay__input{max-width:14rem}.grade-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.page__title,.hero-card__title,.exercise-intro__title{font-size:2.4rem}.dashboard-header{padding:1rem 1.5rem}.dashboard-content{padding:1.5rem}.exercise-card__top{flex-direction:row}.exercise-card__meta{text-align:left}}@media (min-width:900px){.dashboard-overlay,.dashboard-sidebar__close,.dashboard-menu-button{display:none}.dashboard-sidebar{width:15rem;box-shadow:none;position:static;transform:none}.dashboard-tip,.dashboard-streak{display:block}.dashboard-sidebar__note{text-align:left}.hero-card{padding:2rem}.hero-card__grid{grid-template-columns:minmax(0,1fr) auto;align-items:center}.grade-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (min-width:1200px){.dashboard-content{padding:1.75rem 2rem 2.25rem}.grade-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}@media (max-width:699px){.hero-stats{grid-template-columns:1fr}.exercise-face__label{font-size:1.1rem}.exercise-options,.exercise-options--wide{gap:.75rem;max-width:100%}.choice-button{min-width:4.25rem;min-height:4.25rem;padding:.9rem 1rem;font-size:1.45rem}.choice-button--word{min-width:min(10rem,100%);min-height:4.5rem;font-size:1.05rem}.choice-button--plain{min-width:4.75rem;min-height:4.75rem}.compare-panel--button{min-width:min(9rem,100%);min-height:6rem}.choice-button--arrow{min-width:5rem}}